Widely universal milling machine model 676. Specialized milling machine SF676

• Characteristics
• Choice of modification
• Specification and equipment
• Technical documentation
• Public guarantee
• Acceptance, delivery, commissioning

Benefits and Brief Description

Widely versatile milling machine SF676 is universal machine, with a wide scope of application.

According to statistics, the main consumers of the machine are enterprises of the domestic military-industrial complex, which use the machine both in the serial production of parts and in instrumental, experimental, auxiliary, and repair departments; as well as enterprises processing industry mainly for repair and operational purposes.

The SF676 machine allows you to perform various operations: milling flat and shaped planes, drilling, threading, centering, counterbore, boring, chiseling, marking and other types of work. The machine can process parts of the most complex configurations from various materials and with high precision. The machine can use a huge variety of tools and accessories.

Using the SF676 machine, you minimize auxiliary time and process parts economically and efficiently.

Advantages of the SF676 machine

• The machine uses an original solution to the VFG design, based on the “DOUBLE CYLINDER” principle, which can be rotated at an angle of ±90 degrees. The “DOUBLE CYLINDER” design ensures stability of processing and safety of the body from destruction, and allows for power milling.
• The machine uses industrial LED lightening, it is possible to install additional, more powerful, sealed lighting.
• The machine is equipped with digital display units produced by SKB IS and produced by GIVI-Electonics. The DRO unit is equipped with a direct reference system, which displays the actual position or movement of the working unit in space, and not the rotation of the axis drive screw.
• The consumer has the right to choose the type of linear displacement transducers based on own conditions operation.
• The massive cast iron bed absorbs vibrations and allows you to maintain the quality of the parts processed on the machine. The frame guides are protected by a special corrugated casing that protects the frame from premature destruction.
• It is possible to mill both small parts and parts up to 800 mm long, 300 mm wide or more.
• The ability to perform slotting operations has been implemented (PHOTO or drawing of a slotting head)
• Convenient (intuitive), classic machine control
• The small dimensions of the machine allow it to be placed in almost any room.
• A wide range of rotation of horizontal and vertical spindles allows you to select the most suitable cutting modes. Coolant is supplied to the cutting zone through a modular-jointed tube.
• The presence of two spindles, horizontal and rotary vertical, as well as a large number of accessories for the machine, makes it highly versatile and convenient for working in tool shops machine-building plants in the manufacture of fixtures, tools, relief stamps and other products.
• A wide range of spindle speeds and feeds, the presence of mechanical feeds and fast movements ensure economical processing of various parts in optimal conditions.

Sketches of working surfaces and serial spindles

Location of controls for the SF676 cantilever milling machine

1. Electric pump switch
2. Network switch
3. Mechanical vertical feed shut-off stops
4. Flywheel for manual movement of the table in the vertical direction
5. Flywheel for manual movement of the table in the horizontal direction
6. Handle for rapid movement of the caliper and spindle head
7. Handle for turning on the horizontal and vertical mechanical feed of the table
8. Speed ​​dial
9. Vertical spindle manual feed handle
10. Screws for clamping the spindle headstock trunk and the vertical spindle trunk
11. Tool clamp square in horizontal spindle
12. Cooling tube clamp handle
13. Light switch
14. Mechanical cross feed cut-off stops
15. Handwheel for manual spindle rotation
16. Start and stop control buttons
17. Gear knobs
18. Feed switch handle
19. Feed set disc
20. Reversing the engine
21. Mechanical longitudinal feed deflection stops
22. Table clamp handle in horizontal direction
23. Vertical spindle sleeve clamp handle
24. Caliper clamp handle in vertical direction
25. Headstock manual feed flywheel
26. Headstock Clamp Handle
27. Setting the vertical head to the zero position
28. Handle for turning on the mechanical feed of the spindle head
29. Vertical spindle movement limit stop
30. Tool taper clamp square in vertical spindle

Characteristics

Brief characteristics

№	Index	Unit change	Meaning
1.	Overall dimensions (length x width x height)	Mm.	1200x1240x1780
2.	Weight of the machine as standard	Kg.	1050
3.	Dimensions of the working surface of a standard corner horizontal table (width x length)/number of T-slots	Mm.	250x800 / 4 - standard, 3 on request
4.	Dimensions of the working surface of the corner horizontal table increased (width x length) / number of T-shaped slots	Mm.	300x800 / 5
5.	Dimensions of the working surface of a vertical table (width x length)	Mm.	250x630
6.	Movements along the X,Y,Z axes	Mm.	450x300x380
7.	Horizontal and horizontal spindle tapers	X	7:24-40 or MORSE Cone4
8.	Horizontal/vertical spindle speed limits (16 speeds)	RPM	50-1630/63-2040
9.	Working feed limits (16 feeds)/rapid feed	mm/min.	13-395/935
10.	Main drive motor/coolant pump power	kW.	3,0 / 0,12
11.	Accuracy class according to GOST8-82	X	N

FULL SPECIFICATIONS

Technological and operational

№	Index	Unit change	Meaning
12.	Type of measuring system (for machines with DRO, SPPU, CNC)	X	Straight
13.	Principle of linear motion converters	X	Optical or magnetic
14.	Number of displayed/programmable coordinates	X	2 or 3/2 (SPPU) 3 (for CNC)
15.	Discreteness of linear converters	Mkm	1
16.	Distance from the axis of the horizontal spindle to the working surface of the corner horizontal table, minimum/largest	Mm.	80-440(80-460 with open protective cover)
17.	Distance from the end of the vertical spindle to the working surface of the corner horizontal table, minimum/largest	Mm.	0-350
18.	Distance from the end of the horizontal spindle to the axis of the vertical spindle	Mm.	115
19.	The greatest distance from the end of the horizontal spindle to the end of the shackle	Mm.	315
20.	Maximum axial movement of the vertical spindle (quill stroke)	Mm.	80
21.	The largest angle of rotation of the vertical spindle in the vertical plane	hail	±90
22.	Dividing price of dials/rulers	Mm.	0,05/1
23.	The greatest cutting force allowed//limited by the feed mechanism	Kgs	550/600
24.	Permissible value of the axial component of the cutting force acting on the vertical spindle, no more	Kgs	130
25.	Machine noise limits	dBa	93
26.	The greatest force on the handles, controls/flywheel handles, movement along the axes/lifting the caliper up	Kgs	4/4/8 (4/5/10 for UGS 300x800mm)
27.	Drive belt, type/qty.	X	A2000T/3
28.	Drive chain, type/number/number of links	X	PR-12.7-1820-1/2/78+72
29.	Lubrication system	X	Dual-circuit
30.	Main filling volume of lubricant	L.	4,5
31.	Lubricant used	X	I-30/CIATIM
32.	View climatic version according to GOST 15150	X	UHL-4.1

Electrical equipment

№	Index	Unit change	Meaning
33.	Type of supply circuit current	X	alternating three-phase
34.	Current frequency	Hz	50
35	Voltage	IN	380
36.	Number of motors on the machine	PC.	2
37.	Mains voltage	IN	380
38.	Control voltage	IN	380
39.	Lighting circuit voltage	IN	24
40.	Drive motor	X	AIR 100S4U3
41.	execution	X	1 M 1081
42.	power	kW	3
43.	rotation frequency	RPM	1500
44.	Electric pump	X	P-0.25.M.10
45.	power	kW	0,12
46.	performance	l/min.	22
47.	rotation frequency	RPM	2800
48.	Total power of all electric motors	kW	3,12
49.	Feed electric motor (for machines with SPUU and CNC) spindle head/slide/support	kW	0,8/0,8/1
50.	Total power of all electric motors (for machines with SPPU and CNC)	kW	5,8
51.	Rated current of the machine	A	7
52.	Rated current of circuit breaker	A	10

Acceptable parameters of geometric accuracy (main of 28 controlled parameters)

№	Index	Unit change	Meaning
53.	Axes positioning accuracy according to GOST 27843-2006 (for machines with SPPU and CNC)	Mkm	20
54.	Repeatability of axes positioning according to GOST 27843-2006 (for machines with SPPU and CNC)	Mkm	15
55.	Axial runout of horizontal/vertical spindles, no more	Mkm	15/10
56.	Radial runout of the conical surface of horizontal/vertical spindles, no more	Mkm	10/10
57.	Flatness of working surfaces of vertical and corner horizontal tables over a length of 500 mm, no more	Mkm	20
58.	Mutual perpendicularity of axes X, Y, Z, no more	Mkm	20
59.	Parallelism of working surfaces to the direction of movement along the axes, no more	Mkm	20
60.	Parallelism of spindle rotation axes to the direction of axis movement, no more	Mkm	20
61.	Perpendicularity of the axes of rotation of the spindles to the direction of movement of the axis, no more	Mkm	30
62.	Parallelism of the base grooves to the direction of movement of the axis, no more	Mkm	20

Choice of modification

Symbol

SF676-A-B-C-D-E

SF676 – designation of a conditional base model. Milling machine 676 (widely universal milling machine SF676). Invariably when ordering.

To determine the required modification, it is necessary to sequentially determine the value of the variables. A, B, C, D, E – variable designations when ordering.

A – Dimensions and number of grooves of the corner horizontal table (hereinafter referred to as the UGS notice).

250/4 – serial normal UGS size 250x800mm, 4 T-shaped grooves according to GOST 1574-91. 2 middle grooves are 14H8, the rest are 14H12.

300/5 – serial enlarged UGS size 300x800mm, 5 T-shaped slots in accordance with GOST 1574-91. The middle groove is 14H8, the rest are 14H12.

250/3 – serial normal UGS size 250x800mm, 3 T-shaped grooves according to GOST 1574-91. The middle groove is 14H8, the rest are 14H12.

C – out of series. UGS manufactures according to the Customer's requirements.

B – Applicable cones of horizontal and vertical spindles.

40AT5 – Serial. Cone of vertical and horizontal spindles 7:24-40 according to GOST 15945-82.

KM4 – Serial. Cones of vertical and horizontal spindles MORSE CONE 4 according to GOST 25557-2006.

C – Outside the series. Machines with cones of vertical and horizontal spindles are manufactured according to the Customer's requirements.

C – Principle of the measuring system for digital display devices (hereinafter referred to as the DRO notice).

M - Serial. Magnetic principle of the measuring system. Components GIVI-ELECTRONICS (ITALY).

O – Serial. Optical principle of the measuring system. Components of JSC "SKB IS" ST. PETERSBURG, RF.

D – number of coordinates displayed on the DRO block

0 – Serial. The DRO is not installed.

F2 – Serial. Displays the coordinates of the X,Y, axes.

F3 – Serial. Displays the coordinates of the X, Y, Z axes.

FS – Outside the series. Type and number of displayed coordinates according to the Customer's requirements.

E – thread profile for the drive screws of the X, Y, Z axes

TR - Serial. Trapezoidal gears (dimensions, profile, tolerances according to GOST 24737-81, 24738-81, 9484-81, 9562-81).

Ball screw - Serial. Ball screw rolling gears (dimensions, profile, tolerances according to GOST 25329-82, OST 2 RZ1-5-89, OST 2 RZ1-4-88)

Examples of symbols

• SF676-300/5-KM4-M-F3-ShVP widely-universal milling machine SF676. Enlarged UGS size 300x800mm, 5 grooves according to GOST 1574-91, Morse spindle cone 4 according to GOST 25557-2006, magnetic measuring system, 3 coordinates are displayed, ball screws are installed.
• Milling machine model SF 676 TU 3816-001-67559892-2016. Modification by AI No. 2 dated 07/01/2017. - SF676-250/4-40AT5-0-0-TR widely-universal milling machine SF676. UGS size 250x800mm, 4 grooves according to GOST 1574-91, spindle cones 7:24-40 according to GOST 15945-82, DRO is not installed, trapezoidal gears are installed.

Specification and equipment

The specification of the wide-universal milling machine SF676 is a list of its main elements, as well as a list of tools, accessories and equipment, including additional ones.

Main specification of the wide-universal milling machine SF676

• Gearbox - 751001
• Feed box - 752001
• Caliper - 763001
• Spindle head - 766К001
• Bed - 767001
• Electrical equipment - 67690000
• Set of tools and accessories - 7680000
• Vertical head based on the “DOUBLE CYLINDER” principle (removable unit) - 764K001.01-DC
• Horizontal corner table (removable unit) - 7681K001.01 (250/4)
• Z axis guide protection;
• Oil station type Y-6(8) with a manifold for 8 dispensers.
• LED lighting 24V – 3 CL LEDs.
• DRO with linear converters from JSC SKB IS or GIVI-Electronics (for models with index F2, F3).
• SPPU components OJSC "SKB IS"
• CNC at the Customer's choice

Equipment configuration

SF 676.00.000.

Spare parts

Tool

Designation	Name	Col.	Note
7811-0022 NS 1	Key GOST 2839 14x17	1
7811-0024 NS 1	Key GOST 2839 19x22	1	Supplied in a separate place in the general packaging
7811-0025 NS 1	Key GOST 2839 22x24	1	Supplied in a separate place in the general packaging
7811-0041 NS1	Key GOST 2839 27x30	1	Supplied in a separate place in the general packaging
7811-0043 NS 1	Key GOST 2839 32x36	1	Supplied in a separate place in the general packaging
7812-0375	Key GOST R50123 6	1	Supplied in a separate place in the general packaging
7812-0376	Key GOST R50123 8	1	Supplied in a separate place in the general packaging
7812-0379	Key GOST R50123 14	1	Supplied in a separate place in the general packaging
7811-0318 1	Key GOST 16984 55x60	1	Supplied in a separate place in the general packaging
7810-0308 ZV1	Screwdriver GOST17199 0.6x4x155	1	Supplied in a separate place in the general packaging
7810-0928 ZV1	Screwdriver GOST17199 1x6.5x190	1	Supplied in a separate place in the general packaging

Accessories

Designation	Name	Col.	Note
764К001.01-ДЦ	Vertical head removable unit	1	Installed on the machine
676.60.001	shield	1	Installed on the machine
676.60.001	shield	1	Installed on the machine
7681K001.01 (250/4)	Corner table standard removable unit	1	Same
766K012	Horizontal trunk removable unit	1	Supplied in a separate place in the general packaging
766K013	Earring detachable knot	1	Supplied in a separate place in the general packaging
xxxx-315	Mandrel f. 27 with stacked rings and bushing	1	Supplied in a separate place in the general packaging
676.83.000	Lever	1	Supplied in a separate place in the general packaging
used	Cleaning rod heads	1	Supplied in a separate place in the general packaging
used	Headstock ramrod	1	Supplied in a separate place in the general packaging
ICH-10 class 1	Dial indicator	1	Supplied in a separate place in the general packaging
used	Set of clamping devices (50 or 58 pieces)	1	Supplied in a separate place in the general packaging
xxx/ER32 (ER40)	Collet chuck with a set of collets ER32 or ER40 (6 pcs.)	1	Supplied in a separate place in the general packaging
used	Cooling system	1	Installed on the machine

Technical documentation

Technical documentation:

• Certificate SF676
• Transporting and unpacking the machine
• Foundation. Installation of the machine.
• Specifications

Acceptance, delivery, commissioning

The policy of the Vyatka Machine Tool Plant approved following works included in the price of the equipment:

1. Preliminary acceptance of the SF676 machine at the location of VSZ LLC. At this stage, the Buyer takes part in the final control procedure of equipment for all parameters assigned to control. By agreement, it is possible to carry out preliminary acceptance using data transmission means.
2. Transportation of equipment to the Buyer at approved rates (see below). Transportation is carried out by transport company or through dedicated rolling stock.
3. Insurance of equipment for the full cost, but not more than RUB 1,800,000.00/piece, including VAT - 20%. Insurance company VSZ LLC chooses independently. Cargo insurance protects the Buyer from the risks of loss and/or damage to equipment in transit.
4. Pre-commissioning works (commissioning works) at the equipment installation site. Commissioning works are carried out in accordance with document SF676.00.00.000AP dated 10/01/2017. Document SF676.00.00.000AP regulates the process of commissioning and acceptance and transfer of the widely-universal milling machine model SF676 in all modifications.

The process of commissioning and acceptance and transfer from supplier to consumer is carried out strictly according to the methodology.

The process is divided into 3 components:

1. General equipment checks;
2. Checking the geometric accuracy of the machine;
3. Checking the machine in operation.

The report is filled out by representatives of the manufacturer at the place of operation of the machine based on the results of measurements taken in the presence of representatives of the consumer. Filling out the act is carried out by a person who has a certificate of service engineer of Vyatsky Machine Tool Plant LLC, or another person who has a corresponding certificate issued by Vyatsky Machine Tool Plant LLC.

Successful completion of work and inspections under this act means that the supplier has fulfilled its obligations for commissioning and acceptance and transfer to the extent provided for by the manufacturer’s regulations, as well as to the extent necessary to receive warranty obligations, according to the “public guarantee” coupon. Other checks during commissioning and transfer of the machine from the supplier to the consumer are not provided for in the documentation of Vyatka Machine Tool Plant LLC. By agreement with the consumer, partial (not complete) checks listed below are allowed.

At the consumer’s request and for a fee, Vyatsky Machine Tool Plant LLC issues a duplicate of the machine’s construction certificate.

Region	City	Distance	Price
Republic of Bashkortostan	Ufa	760km	27,000 rub.
Republic of Karelia	Petrozavodsk	1420km	35,000 rub.
Komi Republic	Syktyvkar	430km	22000 rub.
Mari El Republic	Yoshkar-Ola	300km	22000 rub.
The Republic of Mordovia	Saransk	730km	28,000 rub.
Republic of Tatarstan	Kazan	400km	22000 rub.
	Nizhnekamsk	520km	22000 rub.
Udmurt republic	Izhevsk	400km	22000 rub.
Chuvash Republic	Cheboksary	390km	22000 rub.
Kamchatka Krai	Petropavlovsk-Kamchatsky		150,000 rub.
Krasnodar region	Krasnodar	2060km	39,000 rub.
Krasnoyarsk region	Krasnoyarsk	3300km	45,000 rub.
Perm region	Permian	510km	25,000 rub.
Primorsky Krai	Vladivostok	8350km	125,000 rub.
Stavropol region	Stavropol	2020km	38,000 rub.
Khabarovsk region	Khabarovsk	7620km	76,000 rub.
Amur region	Tynda	6160km	79,000 rub.
Arhangelsk region	Arkhangelsk	1170km	30,000 rub.
Astrakhan region	Astrakhan	1880km	35,000 rub.
Belgorod region	Belgorod	1640km	38,000 rub.
Bryansk region	Bryansk	1360km	38,000 rub.
Vladimir region	Vladimir	800km	28,000 rub.
Volgograd region	Volgograd	1450km	33,000 rub.
Vologda Region	Cherepovets	950km	27,000 rub.
	Vologda	850km	27,000 rub.
	Veliky Ustyug	590km	27,000 rub.
Voronezh region	Voronezh	1350km	33,000 rub.
Ivanovo region	Ivanovo	680km	27,000 rub.
Irkutsk region	Irkutsk	4370km	65,000 rub.
	Bratsk	4200km	88,000 rub.
Kaliningrad region	Kaliningrad	2180km	78,000 rub.
Kaluga region	Kaluga	1150km	27,000 rub.
Kostroma region	Kostroma	610km	24,000 rub.
Kurgan region	Mound	1270km	33,000 rub.
Kursk region	Kursk	1490km	33,000 rub.
Leningrad region	St. Petersburg	1510km	30,000 rub.
Lipetsk region	Lipetsk	1170km	33,000 rub.
Moscow region	Moscow	940km	27,000 rub.
Murmansk region	Murmansk	2290km	60,000 rub.
Nizhny Novgorod Region	Nizhny Novgorod	560km	22000 rub.
Novgorod region	Velikiy Novgorod	1300km	30,000 rub.
Novosibirsk region	Novosibirsk	2520km	40,000 rub.
	Kuibyshev	2230km	37,000 rub.
Omsk region	Omsk	1850km	35,000 rub.
Orenburg region	Orenburg	1040km	30,000 rub.
Oryol Region	Eagle	1320km	32,000 rub.
Penza region	Penza	870km	27,000 rub.
Pskov region	Pskov	1500km	33,000 rub.
Rostov region	Rostov-on-Don	1790km	35,000 rub.
	Volgodonsk	1680km	35,000 rub.
Ryazan Oblast	Ryazan	990km	27,000 rub.
Samara Region	Samara	780km	27,000 rub.
Saratov region	Saratov	1060km	30,000 rub.
Sakhalin region	Sakhalin		95,000 rub.
Sverdlovsk region	Ekaterinburg	890km	27,000 rub.
Smolensk region	Smolensk	1360km	30,000 rub.
	Vyazma	1200km	30,000 rub.
Tambov Region	Tambov	1110km	27,000 rub.
Tver region	Tver	990km	27,000 rub.
Tomsk region	Tomsk	2790km	44,000 rub.
Tula region	Tula	1120km	27,000 rub.
Tyumen region	Tyumen	1220km	30,000 rub.
Ulyanovsk region	Ulyanovsk	630km	27,000 rub.
Chelyabinsk region	Chelyabinsk	1100km	30,000 rub.
Yaroslavl region	Yaroslavl	690km	27,000 rub.
Nenets autonomous region	Naryan-Mar		140,000 rub.
Khanty-Mansiysk Autonomous Okrug	Khanty-Mansiysk	1890km	65,000 rub.
	Surgut	2000km	65,000 rub.
Yamalo-Nenets Autonomous Okrug	Labytnangi		123,000 rub.
Kamchatka Krai	Kamchatka		165,000 rub.

Information about scammers, counterfeits and other “manufacturers”

Offers of low-quality (refurbished and repaired) SF-676 machines are possible. Presumably, such machines can be offered by enterprises in the Kirov region and the Russian Federation that do not have the resources to build equipment.

Be careful!

More detailed information about the organizations can be provided upon request.

We invite all potential consumers to Kirov to get acquainted with the production process of SF676 machines.

DEAR POTENTIAL CONSUMERS!
In order to avoid purchasing counterfeits of SF676 machines, refurbished SF676 machines, Chinese machines for SF676, in all procedures we ask you to indicate the following name and requirement for product quality, namely:

"MILLING MACHINE
MODELS SF676 TU-3816-001-67559892-2012"

REGULATIONS TU-3816-001-67559892-2012 ESTABLISHED REQUIREMENTS THAT ONLY SF676 MACHINE DESIGNS PRODUCED BY VSZ LLC HAVE.

ALSO, YOU CAN ALWAYS ORDER A NON-STANDARD ENLARGEED HORIZONTAL TABLE 7681K001-02(300/5) SIZE 300X800MM, WHICH WILL IMMEDIATELY REMOVE UNCONSCIOUS MANUFACTURERS, SINCE ONLY VSZ LLC HAS OWN CASTING BASE E CASE PARTS.

Special machines and further development of the project

For organizers of trading procedures

This section is intended to help legal entities who decided to purchase equipment produced by the Vyatka Machine Tool Plant according to the SF676 nomenclature in any chosen modification.

The information provided is for reference only and describes the potential subject of the trading procedure - the selected modification of the SF676 machine as standard with.

If it is necessary to supply the machine with additional equipment and/or additional work(for example: power supply, special guarantee, additional construction works when installing equipment, etc.), additional sections of technical specifications are being developed, examples of which are given below.

Option 1

"Procurement Regulations" - allowed

Option 2

The Customer/Buyer has an internal document – "Procurement Regulations" - NOT allowed refer to documents standardizing finished products.

Attention! Due to the increasing number of cases of fraud in the supply of machine tools, we ask you to working together between the customer’s purchasing department and the production and commercial department of VSZ LLC in the preparation of trading procedures.

The 676th series of milling machines, extremely popular during the Soviet era, has not lost its popularity today. Both equipment manufactured in the 70s and 80s, as well as modern modifications of these models, are widely used.

In this article we will look at the universal milling machine SF-676, study its layout and principle of operation, and also pay attention to the analogue of this model - the 676P milling machine, and find out how they differ from each other.

1 Purpose and scope of use of SF-676

The widely-universal milling cutter SF-676 can be equipped with two types of spindles - a rotary-vertical one, for working with face and key cutters, and a horizontal one, when using which you can install shaped, disk and cylindrical type cutters on the machine.

It is the presence of a second spindle head, adjustable in perpendicular planes, that distinguishes widely universal milling cutters from conventional machines. SF-676 can operate using two spindles simultaneously, while the unit, in addition to milling, performs operations such as drilling, countersinking and boring.

IN industrial practice SF-676 is widely used to perform the following operations:

• external treatment, internal surfaces and bodies of revolution by turning;
• cutting grooves and ledges;
• turning splines on shafts;
• formation of gears.

Units of the 676 series belong to the class of high-precision milling machines (H). The greatest processing accuracy is achieved in the absence of vibration sources near the equipment, at a temperature environment 20 degrees and humidity around 65%.

SF-676 and 676P are in demand both in single and in small-scale production, most often they can be found in workshops machine-building enterprises and tool factories. The popularity of these machines is due to the presence of following operational benefits:

1. The machine bed is made of cast iron; its heavy weight prevents vibration during processing, which makes it possible to maintain a high milling point in any conditions.
2. The 676 series milling cutters are universal; they can process both small-sized parts and workpieces up to 80 cm long and 25 cm wide.
3. The equipment can be equipped with a slotting head, which will allow it to perform the corresponding operations.
4. The machines are relatively small in size among equipment in their class; if necessary, they can even be placed in a garage.

Also among the advantages, we note the wide range of rotation of the spindle heads, which allows you to select optimal mode processing metals of any hardness.

1.1 Milling cutter SF-676 in operation (video)

1.2 Equipment specifications

Let's consider specifications machine SF-676:

• work table sizes: horizontal - 250*800, vertical - 250*630 mm;
• weight of the workpiece being processed - up to 100 kg;
• distance along the spindle-table axis - from 80 to 450 mm;
• spindle reach - from 125 to 375 mm;
• maximum spindle head travel: along the X axis - 300 mm, along the Y axis - 380 mm;
• highest spindle rotation speed: horizontal - 1630, vertical - 2040 rpm;
• number of rotation speeds - 16;
• cone standard - 40AT5;
• spindle head feed speed - 13-395 m/mm;
• number of innings - 16.

The SF-676 is equipped with a 3 kW electric drive; there is also an auxiliary motor for the coolant supply system, which powers an electric pump with a capacity of 23 l/min. The dimensions of the machine are 120*124*105 cm, weight - 1 ton. The cost of this model in a modern version varies between 700 thousand rubles.

Similar in terms of layout and functionality model 676P differs from SF-676 in the following parameters:

• 10 mm shorter distance along the spindle-table axis;
• vertical spindle headstock stroke 250 mm;
• main electric drive power 2.2 kW;
• weight 910 kg, dimensions - 126*121*178 cm.

The widely-universal milling machine 676P has been completely replaced by an analogue SF-676; today new batches of equipment are not being produced. On the secondary market, equipment can be found at a price of 250-300 thousand rubles.

2 Schemes and structural design

The bed of the wide-universal milling cutter SF-676 is made of cast iron; it acts as a load-bearing base on which the main structural components of the machine are fixed. A feed box and a speed unit are mounted on the left side of the frame. The headstock, on which a horizontal spindle is mounted, moves along its upper part. On the same headstock, if necessary, you can attach a vertical spindle (to the front end part).

The router support is mounted on vertical guides, and the table is mounted on horizontal guides. SF-676 is equipped with two work tables, the main one of which is horizontal; workpieces measuring up to 80 cm in length and 25 cm in width are mounted on it.

The electric drive of the machine is located in the lower part of the frame, on the base plate, inside of which there is a reservoir for coolant. All electrical equipment of the unit is located under the top cover of the frame, which provides free access to the equipment as needed.

The main functional elements of the design of the SF-676 router are the support and spindle head:

• the caliper holds and moves the working table of the machine in the longitudinal-transverse plane; it is driven by a running shaft, which transmits the torque coming from the engine to the feed box;
• the spindle head is connected to the feed box via a drum gear, the spindle itself is mounted on ball and radial bearings, the possibility of precise movement of the spindle is provided by the indicator holder.

5 built-in LEDs are responsible for illuminating the workplace. Also, the modern SF-676 has a digital display unit, which displays the parameters of the current operating mode of the machine.

The highly versatile SF-676 machine is a reliable and durable piece of equipment capable of operating in difficult operating conditions while complying with the standards. Maintenance. Maintenance must be performed regularly, within a strictly established time interval:

• every 10 hours of operation, the guides and lead screws are lubricated with liquid machine oil;
• every 40 hours, linear bearings are coated with machine lubricant; Litol and its analogues are suitable;
• every 400 hours, the belts in the feed box are inspected and adjusted; if wear or damage is detected, the belts must be replaced;
• screw assemblies are inspected and tightened every 400 hours.

Also, all moving parts of the router should be regularly inspected. Before putting the machine into operation for the first time after maintenance, the following points must be completed:

1. Check the presence and reliability of protective covers and covers.
2. Remove repair tools from the work area, clean the table from lubricants and liquids.
3. Start the machine and make sure it is working at idle speed.

The performance check begins with running the machine at the minimum spindle speed, after which the speed increases up to the maximum. In the main operating speed mode, the unit should operate for 2 hours, after which the spindle supports should not heat up to a temperature of more than 50 degrees.

After running at idle, the machine is checked under load. The unit should operate at maximum cutting force and at 25% overload (short-term). SF-767, in good condition technical condition, even when overloaded within the specified limits, does not produce vibrations that affect the accuracy of milling. The machine must be checked at an ambient temperature of +20 degrees, the recommended air humidity is 65%.

The milling machine model SF 676 is intended for horizontal milling of products using cylindrical, disk, shaped and other cutters; and vertical milling with face, end, key and other cutters at various angles.
The machine is intended for use in toolrooms* and experimental workshops, as well as in machine shops small-scale and individual production.
The presence of a wide range of revolutions, mechanical and accelerated feeds ensures economical processing of various parts through the use of high cutting conditions and reduction of auxiliary time.
The machine can perform a variety of boring, drilling, marking and other operations with high precision, which can be achieved if the machine is installed in a room with constant temperature+ 20° + 2° C and air humidity 65+5% and if there are no heat sources near the machine.
The machine must not be installed in the same room as machines that operate abrasive tools.

Kinematic diagram

The kinematic diagram consists of a main movement chain and a feed chain.

bed

An electric motor driving the main movement chain and the feed chain is mounted to the base (1) on the bracket (2). The transmission of rotation from the engine to the gearbox is carried out by three V-belts, the transmission of rotation from the gearbox - feeds to the caliper and spindle head mechanisms by two chain drives (sprockets 4, 6, 10, 11, 13,14).
To protect the feed mechanism of the caliper and spindle head from overload, there is a safety cam clutch (8).
The mechanical feed of the spindle headstock is turned on by a handle sitting on the shaft (16), the direction of movement of the headstock corresponds to the position of the handle. The mechanical feed of the spindle head can be automatically turned off by stops installed on it.
All rubbing surfaces are lubricated with ball lubricants using a syringe with CIATIM-201 lubricant.

Gearbox

The gear-type gearbox is assembled in a special housing, which is attached with a flange to the side of the station and communicates with the horizontal and vertical spindles 16 different speeds through selective recruitment.
The speed change is carried out by a switching mechanism located on the front wall of the box body as follows: the gear shift handle (4) must be lifted up. In this case, the disks (6) having a number of holes are separated. When turning the speed dial (1) and the associated disks, the position of the disk holes relative to the fingers (7) changes. This prepares for changing gears.

Moving the shift handle downwards brings the discs back to their original position. At the same time, the fingers, moving, shift the gearbox gears using levers.
When switching, there may be cases where the ends of the teeth of the meshed gears coincide. In this case, the discs do not align. In this case, it is necessary to turn shaft 1 with the flywheel (see Fig. 6).
To avoid gear damage, changing gears under load is prohibited.

Gearbox

The feed box provides the caliper and spindle head with 16 different feeds and rapid movements.
The feedbox shafts receive rotation from 1 gearbox shaft (see Fig. 6). The last (driven) shaft of the gearbox is connected to a roller on which two sprockets (10, 11) are placed (see Fig. 10), transmitting movement to the caliper and spindle mechanisms.
Changes in feed rates are made in the same way as changes in the gearbox (see description of the speed dial mechanism in the unit *Speedbox”).
When switching feeds, you must ensure* that the cross handle of the caliper is in the neutral position.
Accelerated movement is carried out by pressing the handle (7). When the handle is released, the working feed continues.
To ensure a constant direction of rotation of the gearbox gears when the gearbox is reversed, gear (9) is used, which automatically maintains the direction of rotation.
A piston pump (5) is used to lubricate the gears of the gearbox, feed box and spindle headstock. The pump piston (4) is driven in reciprocating motion by the eccentric gear (9). When the pump piston moves back and forth, oil is sucked from the frame reservoir and sprayed out. An oil mist is created, which lubricates all gears. To monitor the operation of the pump, a transparent eye (6) is installed on the feed box flange, through which the oil pulsation can be seen.

Caliper

The support carries the main table (9) of the machine with a vertical working plane and moves it in the vertical and horizontal directions.
The caliper consists of a body (5) having vertical guides in the form of a “dovetail”
Moving along the guides of the frame, the support carries out vertical feeding of the table. Longitudinal feed is carried out by moving the table along the horizontal guides of the support.
The table feed control mechanism is located in the support body. The exercise mechanism is driven into rotation by the running shaft (4), which receives rotation from the feed box, and transmits rotation to the vertical (3) and horizontal (12) lead screws.
The feeds are controlled by a cross handle (17). The direction of movement coincides with the direction of movement of the cross handle.
In addition to mechanical feeding, the table can be moved manually; in the vertical direction with the flywheel (15), in the horizontal direction with the flywheel (14).

The table movements are counted using millimeter rulers, dials (vertical - dial (16), horizontal - dial (13) with a division of 0.005 mm), gauge blocks and indicators with a division of 0.01 mm.
The caliper has mechanisms for automatically switching off feeds. In the horizontal direction, pass-through and end stops (25) are used for this purpose. To automatically switch off the vertical feed, pass-through and end stops (3) (see Fig. 5) installed on the frame are used. The passage stops move in T-shaped slots and can be set to the required stroke size.
The caliper mechanisms are lubricated through a lubrication station. After pumping the lubrication station handle a few times, oil from the station reservoir is supplied through a feeder and distribution pipes to the caliper mechanisms. Lubrication should be carried out (by rocking the handle) only in the extreme left position of the corner horizontal table (or slide).
There are handles for clamping the caliper in the vertical (24) and horizontal (22) directions (see Fig. 5).

Headstock

The horizontal spindle (1) is mounted in a special housing (12), which moves along the frame guides, thereby providing transverse feed of the machine.
The spindle receives rotation from the gearbox through the intermediate drum gear (18), (see Fig. 11), mounted in the frame and the gear (9), sitting on the spindle.
The front support of the horizontal spindle is a double-row roller bearing (4) with a tapered bore. Axial loads are taken by thrust ball bearings (5). The middle and rear supports of the horizontal spindle are radial ball bearings (8,10), which simultaneously serve as gear supports (9).
The upper guides of the spindle head are designed for attaching the vertical head (Fig. 15) and the trunk (11). An earring (17) is attached to the trunk to support the mandrels. The vertical head, trunk and earring are clamped using crackers when screwing in the screws (10) (see Fig. 5) with an internal hexagon.
The tool is clamped in the horizontal spindle using a cleaning rod (13).
The amount of mechanical movement of the spindle head is set by intermediate stops (16).
The spindle head is moved by a screw (14) rigidly connected to it and a rotating nut (17) (see Fig. 10) fixed in the frame.
The design of the machine ensures the possibility of precise movements of the headstock for jig boring work. To do this, an indicator holder (18) is installed on the headstock, and a tile holder is attached to the frame, on which parallel measuring tiles are installed.

Vertical head

The vertical spindle is mounted in a special head with a trunk for mounting in the upper guides of the spindle head. The head, if necessary, can be rotated on the faceplate of the trunk (18) by ±90° from the vertical. Zeroing in the vertical position is fixed by two conical pins with a handle. The head is clamped to the trunk faceplate using hexagon socket bolts.
The vertical spindle (23) is mounted in a sleeve (5), which is moved manually in the housing (6) using a rack roller (24).
The sleeve is clamped with an asterisk handle (25), which has a hexagon for more reliable clamping.
The weight of the spindle is balanced by a helical leaf spring, one end of which is connected to a rack pinion. the other is with a vertical head housing.
The bevel gears of the head are supported by double radial bearings (10.17). Rotation of the spindle shank from the vertical bevel gear (9) is transmitted by splines. The horizontal bevel gear (19) receives rotation through splines from the horizontal shaft (20).
The lower support of the vertical spindle is a double-row roller bearing (3) with a tapered bore.
The upper support of the vertical spindle consists of two angular contact bearings (7), which also absorb axial loads.
The vertical head is lubricated daily using ball grease nipples (8,11). Labyrinth seals (1.13) protect against lubricant leakage and contamination.

Electrical diagram

By turning on the circuit breaker B1, voltage is supplied to the power circuit and the control circuit. The electric motor is turned on by button SB2, while the electric motor M1 is connected to the network through the contacts of the magnetic starter, the “start” button is blocked by the block contact of the magnetic starter. The microswitch of the B5 gearbox turns off the electric motor when the gears are turned on. The electric motor is turned off using button SB1
The spindle is reversed by reversing the electric motor through the packet switch VZ. When connecting the machine to the power supply, check that the spindle rotation direction corresponds to that indicated on the reverse packet switch plates.

The cooling pump is turned on and off by switch B2.
Switching on and off local lighting is done with switch B4.
Protection of the electrical equipment of the machine from short circuit currents and thermal protection of the electric motor is carried out by an automatic switch. Zero protection of the electric motor and electric pump - magnetic starter K.

Electrical equipment is made in accordance with established requirements and passed the test in accordance with the “Instructions for electrical equipment of metal-cutting machines.” Operation of electrical equipment must be carried out in accordance with the requirements of the “Rules” technical operation and safety of maintenance of industrial electrical installations. enterprises."

characterized by wide versatility, the ability to process with both horizontal and vertical rotary spindles for milling, drilling, and performing other operations at an angle.

High precision and versatility

The high accuracy of the machine, provided that the operating instructions are followed, contributes to its efficient operation in tool production.
Slotting work, production of various grooves, splines, allows you to successfully use the SF 676, 676P milling machine in repair areas. To be able to perform slotting operations, it is necessary to install a slotting head, which is not included in the standard package and must be purchased separately.

Wide range of possibilities

It has a wide range of spindle speeds and many fixed values ​​of working feeds, depending on the operation being performed and the spindle used, it allows the use of cylindrical, disk, key, end and other sizes of cutters with maximum efficiency. The SF 676, 676P milling machine is successfully operated both in small-scale, individual production, and in tool, repair, and machining areas of large industrial enterprises.

Specifications	Options
Surface dimensions of a corner horizontal table, mm	800 x 250
Vertical table surface dimensions, mm	630 x 250
Maximum longitudinal movement of the table, mm	450
Maximum vertical movement of the table, mm	380
Maximum vertical movement of the table, mm	360
Distances from the axis of the horizontal spindle to the table plane, mm	80 - 460
Distance from the end of the vertical spindle to the table plane, mm	380
Maximum movement of the spindle head, mm	300
Vertical head spindle travel length, mm	80
Maximum angle of rotation of the vertical head, degrees	±90
Taper of vertical and horizontal spindles	ISO 40
Number of spindle speeds, pcs.	16
Horizontal spindle rotation speed limits, min -1	50 - 1630
Vertical spindle rotation speed limits, min -1	63 - 2040
Number of working feeds of the table and headstock, pcs.	16
Limits of table and headstock working feeds, mm/min	13 - 395
Speed ​​of accelerated movements of the table and headstock, mm/min	935
Engine power, kW	3,0
Spindle cone according to GOST 30064-93	ISO 50
Overall dimensions of the machine (L x W x H), mm	1200 x 1240 x 1780
Weight of the machine with electrical equipment, kg	1050

Accessories

The milling machine SF 676, 676P is equipped with accessories necessary for operation and maintenance of the machine. This is a vertical spindle head, a trunk with an earring, an angular horizontal table, a vice, a collet chuck with collets, a mandrel and a set of tools.

Technological equipment

The milling machine SF 676, 676P can be equipped with the technological equipment presented in the table below.

1. Dividing head. The height of the centers is 100 mm. The greatest distance from the end of the spindle to the center of the tailstock is 190 mm. The mass of the dividing head is 66 kg.
2. Collet chuck with a set of collets (Ø3-Ø25).
3. Adapter bushings (kM4, kM3, kM2, kM1).
4. Rotary machine vice, with jaw width 125 mm.
5. Milling mandrels Ø16, Ø22, Ø27 mm with a set of rings and a nut.
6. Rotary milling table. The diameter of the working surface is 250 mm. The gear ratio of the worm pair is 180. The weight of the table is 34 kg.
7. Boring chuck for boring holes with a diameter of 3 to 160 mm.
8. Slotting head. The maximum stroke of the cutter is 80mm. The weight of the slotting head is 30 kg.

Milling machine SF 676, 676P today

The milling machine SF 676, 676P was produced at the Kirov plant "Selmash". Production of the machine was discontinued in 2011.

Price

Due to the discontinuation of production of the SF 676, 676P milling machine, it is impossible to purchase a new machine with exactly this designation. At the same time, there are quite a lot of offers on the market for used and used SF 676, 676P machines overhaul. The final price depends both on the initial condition of the machine and on the volume and quality of work. As a rule, the range of prices on the secondary market for the SF 676, 676P milling machine lies in the range of 100-300 thousand rubles. In case you need new machine, we strongly recommend paying attention to significantly more modern European-made machines.

The Russian wide-universal milling machine SF-676 (675) is designed for both horizontal milling of products with cylindrical, disk, shaped and other cutters, and vertical milling with face, end, key and other cutters at various angles.

The machine is intended for use in tool and experimental shops, as well as in mechanical shops of small-scale and individual production.

The presence of a wide range of revolutions, mechanical and accelerated feeds ensures economical processing of various parts through the use of high cutting conditions and reduction of auxiliary time.

On the SF676 machine it is possible to perform a variety of boring, drilling, marking and other operations with high precision, which can be achieved if the machine is installed in a room with a constant temperature of + 20 ° + 2 ° C and air humidity of 65 + 5% and if there are no sources near the machine heat.

The SF-676 machine is an analogue of the previously produced machines 675, 675P, 676P and allows you to perform the following. operations:

• Milling
• Drilling
• Deployment
• Boring
• Countersinking
• Swotting

The processing of planes is carried out with disk, face, end corner and shaped cutters.

Design advantages

• The massive cast iron bed absorbs vibrations and allows you to maintain the quality of the parts processed on the machine.
• Milling of small parts up to 800mm long, 250mm wide or more.
• Using the machine in tool and machine shops for individual production.
• The ability to perform slotting operations has been implemented (if you purchase a slotting head for an additional fee).
• Convenient classic machine control.
• The small dimensions of the machine allow it to be placed in almost any room, including the garage.
• A wide range of rotation of horizontal and vertical spindles allows you to select the most suitable cutting modes.
• The coolant is supplied from an electric pump. Electric pump capacity 22l/min.
• It has an additional spindle (vertical) head located on a retractable trunk, which can be rotated at an angle of +-90 degrees in two mutually perpendicular planes.
• It is possible to work simultaneously with both vertical and horizontal spindles. For greater versatility of the machine, an overhead milling head is mounted on the rotating head, which allows this machine to perform not only milling operations, but also drilling, countersinking, boring, etc. operations.

The SF-676 machine is ideal for use in small-scale production, in repair shops, tool production and various workshops.

Technical characteristics of the SF-676 milling machine
Characteristic	Meaning
Table size, mm - removable corner - vertical	250x800 250x630
Cone of mountains and vert. Morse spindle	Morse 40AT5 GOST15945
Maximum table movement, mm: - longitudinal - vertical	450 380
Accuracy class GOST-8-82	N
The smallest and largest distance from the axis of the horizontal spindle to the working surface of the corner horizontal table, mm	80-460
Maximum stroke of the spindle head, mm	300
The greatest distance from the end of the vertical spindle to the working surface of the corner horizontal table	380
Maximum axial movement of the vertical spindle, mm:	80
Number of speeds per spindle	16
Rotation speed, rpm - horizontal spindle - vertical spindle	50-1630 63-2040
Table and headstock feed limits	13...395 mm/min
Speed ​​(accelerated) of table and headstock movement	935 mm/min
Engine power ch. drive, kW	3
	1200x1240x1780
Weight SF-676 (675)	1050
Machine dimensions, mm, no more	1700x1450x2200
Weight of SF-676 (675) machine in packaging, kg, no more	1560

Technological equipment

The machine kit includes:

• Vertical spindle head
• Trunk with earring
• Corner table horizontal
• Collet chuck with a set of collets (f4, f5, f6, f8, f10)
• Milling mandrel ø27mm
• Tool set