Specialized vertical milling machine VM 127. Description of the capabilities of the vertical milling machine VM127. Information about the manufacturer of the VM127 cantilever milling machine

VM127 vertical cantilever milling machine. Purpose, scope

The vertical cantilever milling machine model VM127 is designed for milling all kinds of parts made of steel, cast iron and non-ferrous metals and alloys with end, end, cylindrical, radius and other cutters in the conditions of individual, small-scale and mass production. The weight of the part with the device is up to 300 kg.

The machine can process vertical, horizontal and inclined planes, grooves, corners, frames, gears, etc.

The ability to configure the machine for various semi-automatic and automatic cycles allows you to organize multi-machine maintenance.

The powerful drive of the main movement of the VM 127 machine and carefully selected gear ratios provide optimal processing conditions under various cutting conditions and full use of the capabilities of high-speed and carbide tools.

Ease of maintenance of the VM127 machine, readjustment of fixtures and tools provide significant convenience when using the machine in small-scale production.

An automatic lubrication system for components ensures unpretentiousness and reliability of the machine under the most severe operating conditions.

General view of the vertical console-milling machine VM127 with digital display

Location of components of the VM127 cantilever milling machine

Specification of components of the VM127 cantilever milling machine

Bed - VM127.01.010

Gearbox - VM127.03.010

Rotary head - 6Р13.31.01В

Table - slide - 6Р13.7.01Б

Console - 6Р13.6.01Б

Feed box - VM127.4.01

Electrical equipment - 6Р13.8

Spindle speed gearbox - 6Р13.5.01

Electromechanical tool clamping device - 6Р13К.93.000

Location of controls for the VM127 milling machine

List of controls for the VM127 milling machine

Stop button (duplicate)

Spindle Start button (duplicate)

Spindle speed indicator arrow

Spindle speed indicator

“Quick table” button (duplicate)

Spindle pulse button

Tool clamp-release switch

Rotate the head

Spindle sleeve clamp

Automatic cycle sprocket

Handle for turning on longitudinal table movements

Table Clamps

Handwheel for manual longitudinal movement of the table

"Quick table" button

Spindle start button

Stop button

Switch for manual or automatic control of longitudinal table movement

Flywheel for manual lateral movements of the table

Handle for manual vertical movement of the table

Vernier ring

Limb of the table transverse movement mechanism

Button for fixing the feed switch fungus

Feed switch mushroom

Table feed indicator

Arrow-indicator of table feeds. Handle for turning on the transverse and vertical table feeds

Clamping the slide on the console guides

Handle for turning on longitudinal movements of the table (duplicate)

Handwheel for manual longitudinal movement of the table (duplicate)

On-off input switch

Cooling pump on/off switch

Spindle rotation direction switch “left-right”

Spindle speed shift knob

Switch for automatic or manual control and operation round table

Clamping the console on the frame

Spindle sleeve extension handwheel

Clamping the head on the frame

Kinematic diagram milling machine VM127

The main movement is driven by a flange electric motor through an elastic coupling.

The spindle speed is changed by moving three toothed blocks along the splined shafts.

The gearbox provides the spindle with 18 different speeds.

The feed drive is carried out from a flange electric motor mounted in the console. By means of two three-crown blocks and a movable gear with a cam clutch, the feed box provides 18 different feeds, which are transmitted through a ball safety clutch to the console and then, when turned on from the corresponding cam clutch, to the screws of longitudinal, transverse and vertical movements.

Accelerated movements are obtained when the high-speed clutch is turned on, the rotation of which is carried out through intermediate gears directly from the feed electric motor.

The clutch is interlocked with the working feed clutch, which eliminates the possibility of their simultaneous activation. Vertical feeds are 3 times less than longitudinal ones

The bed is the base unit on which the remaining components and mechanisms of the machine are mounted and is rigidly fixed to the base and secured with pins.

The rotating head (Fig. 14) is centered in the annular recess of the frame neck and is attached to it with four bolts that fit into the T-shaped groove of the flange.

The spindle is a two-support shaft mounted in a retractable sleeve. The axial play in the spindle is adjusted by grinding rings 3 and 4. Increased play in the front bearing is eliminated by grinding half rings 6 and tightening the nut.

Technical data and characteristics of the machine VM127 and VM127M

Parameter name		VM127M
Desktop
Accuracy class according to GOST 8-82
Dimensions of the working surface of the table (length x width), mm
Number of T-slots Dimensions of T-slots
Maximum table movement longitudinal mechanical and manual, mm
Maximum table transverse mechanical movement, mm
Maximum transverse movement of the table by hand, mm
Maximum table movement vertical mechanical, mm
Maximum vertical movement of the table by hand, mm
The smallest and largest distance from the end of the spindle to the table during manual movement, mm * The size of 30 mm is ensured by extending the spindle
Distance from the spindle axis to the vertical guides of the bed, mm
Movement of the table by one dial division (longitudinal, transverse, vertical), mm
Longitudinal movement of the table per one revolution of the dial, mm
Transverse movement of the table per one revolution of the dial, mm
Movement of the table per one revolution of the dial, vertical, mm
Spindle
Spindle speed, rpm
Number of spindle speeds
Maximum torque, kgf.m
Spindle end sketch	GOST 836-72
Spindle taper
Maximum axial movement of the spindle quill, mm
Movement of the quill per one revolution of the dial, mm
Movement of the quill by 1 division of the dial, mm
Maximum angle of rotation of the spindle head, degrees
Price of one division of the head rotation scale, degrees
Machine mechanics
Fast table travel longitudinal and transverse, mm/min
Fast table travel vertical, mm/min
Number of table feed stages
Working feed limits. Longitudinal and transverse, mm/min
Working feed limits. Vertical, mm/min
Feed stops (longitudinal, transverse, vertical)
Blocking manual and mechanical feed (longitudinal, transverse, vertical)
Blocking separate feed switching
Automatic intermittent feed Longitudinal
Automatic intermittent feed Cross and vertical
Spindle braking
Overload protection (clutch)
Drive unit
Number of electric motors on the machine
Main motion drive electric motor M1, kW
Coolant pump electric motor M2, kW
Feed drive electric motor M3, kW
Tool clamping motor M4, kW
Electric coolant pump Type
Coolant pump capacity, l/min
Machine dimensions
Machine dimensions, mm	2560 x 2260 x 2430	2560 x 2260 x 2500
Machine weight, kg

Vertical drilling machine

Model 2S150

The machine is designed for drilling, tapping, reaming and tapping in various parts using special settings.

Basic data

The largest drilling diameter in mm
The greatest stroke of the spindle head is mm
Axle offset drive shaft V mm
The smallest and greatest distance from the lower end of the spindle head to the table in mm
Number of speeds
Limits of drive shaft revolutions per minute
Number of innings
Feed limits of spindle headstock mm/rev
The speed of the spindle head's rapid strokes is m/min.
Working table dimensions in mm
Table move in mm
Main motor power in kW
Machine dimensions (length X width X height) in mm	1660Х1200Х3110
Machine weight in kg
Wholesale price of the machine in rubles.

Horizontal machines with a movable table are the most common group of diamond boring machines in the engineering industry. Let's briefly consider two models of these machines - 2712A and 2712C.

Diamond boring machine mod. 2712A. Horizontal diamond boring machine mod. 2732A of particularly high precision, designed for double-sided final boring of holes located on the same axis, as well as for trimming ends in body parts.

The machine provides: deviation of the hole diameter in any section is no more than 0.003 mm for holes with a diameter of 120 mm and 0.004 mm for holes with a diameter of 200 mm over a length of 100 mm; the surface roughness of holes and cut ends when processing cast iron and steel parts is within 0.634-2.5 microns, and when processing parts made of non-ferrous alloys within 0.04-0.32 microns.

The box-shaped frame has spindle heads mounted on bridges with precisely machined bottom and top surfaces. Two T-shaped grooves are made along the top surface for attaching boring heads. Each head contains a spindle in which a mandrel and a chuck for trimming ends are secured. The table with the workpiece attached to it moves along the bed guides.

The machine can operate either manually or in a semi-automatic cycle, adjusted using two cams that are fixed on the table; these cams act on two limit switches located on the machine bed. The workpiece is fixed in a fixture installed on the machine table; Part clamping, movement, fixation, rotation and other auxiliary movements are carried out automatically.

Kinematic diagram of the machine mod. 2712A includes kinematic chains for the main movement and table feed.

Diamond boring machine mod. 2712C. This is one of the most accurate machines of this type. The machine provides processing accuracy in terms of diameter stability in the longitudinal section of 0.001 - 0.002 mm, deviation from roundness of 0.0006-0.001 mm (smaller values ​​for holes with a diameter of up to 32 mm, larger ones 32-250 mm).

Such high processing accuracy is achieved due to the fact that hydrostatic spindle bearings are used in the boring heads, the temperature of the circulating lubricant is stabilized (freon cooling), and an elastic coupling is used to drive the rotation of the head spindles. The use of a mechanical table drive (instead of a hydraulic one) made it possible to reduce heat generation and vibration. The electric motors of all machine drives are moved outside the frame, and the rigidity of the supporting system is increased. To increase the straightness of table movement, two V-shaped guides are used.

Let us note the features of hydraulic bearings (supports). Their main advantages: high rotational accuracy, damping properties and almost unlimited durability, since there is no contact between the spindle and the support; they are separated by a thin layer of oil. This determines the prospects for their use in precision machines, when it is necessary to ensure high quality of finishing operations. Cylindrical bearings with hydrostatic lubrication are made with pockets evenly spaced around the circumference, into each of which the lubricant is supplied under pressure through a throttling device.

The following main types of diamond boring machines are produced: horizontal with a movable table 230-500 mm wide, vertical and inclined multi-spindle machines with movable heads, modular machines of various layouts, universal vertical single-spindle machines with a stationary or moving table in two directions, horizontal machines of a universal type with a movable table and coordinate movements of working bodies.

The Russian vertical milling console VM127M is an analogue of the 6P13, 6T13, FSS450R machines and is designed for milling all kinds of parts made of steel, cast iron and non-ferrous metals and alloys with end, end, cylindrical, radius and other cutters.

The VM127M machine can process vertical, horizontal and inclined planes, grooves, corners, frames, etc.

Fundamental changes occurred with the design of the VM127M machine in 2012.

• The design of the vertical guides of the bed has been changed from a “Dovetail” profile to a U-shaped profile, which made it possible to increase the weight of the workpiece to 800 kg
• The mechanical feed box has been replaced with stepless regulation (Servomotor), for more accurate and quick setup cutting conditions, and increasing processing productivity.
• When manufacturing a machine with a device digital display components were replaced with imported ones using magnetic rulers instead of optical ones.

The powerful main drive and carefully selected gear ratios ensure optimal processing conditions under various cutting conditions and full use of the cutting tool's capabilities.

The technical characteristics and rigidity of the machine make it possible to fully utilize the capabilities of high-speed and carbide tools.

By special order for additional fee the VM127M machine can be equipped with a set of additional accessories 127-13.

Ease of maintenance and quick changeover of fixtures and tools provide significant convenience when using the machine in small-scale production.

Rectangular console guides, which replaced dovetail guides, increased the rigidity of the machine structure and made it possible to increase the weight of processed parts to 800 kg.

An automatic lubrication system for components ensures unpretentiousness and reliability of the machine under the most severe operating conditions.

Machine VM127M for extra. The board is equipped with a digital indication device for table movement.

The VM127M machine is certified for compliance with the requirements of GOST 12.2.009, GOST R IEC 60204-1-99. TU3-178M-89

Climatic conditions UHL4 GOST 15150-69.

Technical characteristics of the VM127M milling machine

Characteristic	Meaning
Working surface dimensions (length x width), mm	1600x400
Number of T-slots	3
800
Maximum table movement, mm:
- longitudinal mechanical/manual	1010/1010
- transverse mechanical/manual	300(280*)/320
- vertical mechanical/manual	400/420
Moving the table by one division of the dial (longitudinal, transverse, vertical), mm	0,05
Table movement per one revolution of the dial, mm:
- longitudinal	4
- transverse	6
- vertical	2
Accuracy of linear coordinates of table movements (when equipped with a digital display), µm
- longitudinal (coordinate "X")	50*
- transverse (coordinate "Y")	50*
- vertical (coordinate "Z")	50*
Spindle taper	AT50
Maximum movement of the spindle quill, mm	80
The largest and smallest movement from the end of the spindle to the working surface of the table during manual movement, mm	30-500
Distance from the spindle axis to the vertical guides of the bed, mm	420
Spindle head rotation angle, degrees	±45
Number of spindle speeds	18
Limits of stepless feed speed adjustment, mm/min:
- longitudinal working/accelerated	25-1250/3000
- transverse working/accelerated	25-1250/3000
- vertical working/accelerated	8,3-416,6/1000
Electric motor power, kW:
- main movement	11
- feed drive	2,1
Liquid cooling electric pump power, kW	0,12
Coolant electric pump capacity, l/min	22
Machine accuracy class	N
Weight

Very common in the area former USSR a series of milling machine that allows milling small and medium-sized parts in single and small-scale production. The machine can process vertical, horizontal and inclined planes, grooves, corners, frames, etc. Analogue machines: 6Р13, 6Т13, FSS450МR.

Ease of maintenance

The ease of maintenance of the vertical milling machine VM127, reconfiguration of the mechanism and the tool itself provide a certain comfort when using the machine in small-scale production. Even in the most ruthless operating conditions automatic system lubrication of components ensures ease of use and operability of the machine.

Design Features

• A powerful drive of the main movement and smooth adjustment of the feed speed ensures optimal processing modes under various cutting conditions and full use of the capabilities of the cutting tool
• Servo-control feed drive with feedback
• A semi-automatic lubrication system for components ensures unpretentiousness and reliability of the machine under the most severe operating conditions
• By special order, the machine can be equipped with a digital display device (DRO).

Specifications	Options
Dimensions of the working surface of the table, mm	1600 x 400
Number of T-slots	3
800
Maximum longitudinal movement of the table, mm	1010
Maximum lateral movement of the table, mechanical/manual, mm	300 / 320
Maximum vertical movement of the table, mechanical/manual, mm	400 / 420
Longitudinal movement of the table by one division of the dial, mm	0,05
Transverse movement of the table by one division of the dial, mm	0,05
Vertical movement of the table by one division of the dial, mm	0,05
Longitudinal movement of the table per one revolution of the dial, mm	4
Transverse movement of the table per one revolution of the dial, mm	6
Vertical movement of the table per one revolution of the dial, mm	2
Spindle taper	AT50
Maximum movement of the spindle quill, mm	80
Manual movement from the end of the spindle to the working surface of the table, mm	30 - 500
Distance from the spindle axis to the vertical guides of the bed, mm	420
Spindle head rotation angle, degrees	±45
Number of spindle speeds	18
Longitudinal feed speed, working/accelerated, mm/minute	25-1250 / 3000
Cross feed speed, working/accelerated, mm/minute	25-1250 / 3000
Vertical feed speed, working/accelerated, mm/minute	8,3-416,6 / 1000
Power of the electric motor of the main movement, kW	11
Feed drive electric motor power, kW	2,1
Power of electric liquid cooling pump, kW	0,12
Electric coolant pump capacity, l/min.	22
Machine accuracy class	N
Weight of workpieces with fixture, kg	800
Overall dimensions of the machine (L x W x H), mm	2560 x 2260 x 2500
Weight of the machine with electrical equipment, kg	4200

Vertical milling machine VM127, VM127M today

The vertical milling machine VM127, VM127M was produced at several enterprises of the former USSR. Currently, most of these enterprises no longer exist. At the same time, leading machine tool factories switched to the production of machine tools of a more modern design, focused on modern instrument And high speeds cutting Such machines are equipped with modern high-quality components and reliable electrical equipment. Thanks to the use of computer-aided design of beds, an increased accuracy class for a milling machine manufactured at a modern plant is rather the rule today. At the same time, prices for modern machines quite comparable to prices for machines of outdated design.

Price

Details Category: Milling machines

The vertical cantilever milling machine model VM127 is designed for milling all kinds of parts made of steel, cast iron and non-ferrous metals and alloys with end, end, and cylindrical ends. radius and other cutters. The weight of the part with the device is up to 300 kg.
The machine can process vertical, horizontal and inclined planes, grooves, corners, frames, gears, etc.
The technical characteristics and rigidity of the machine make it possible to fully utilize the capabilities of high-speed and carbide tools.
The ability to configure the machine for various semi-automatic and automatic cycles allows you to organize multi-machine maintenance.
The machine is designed to perform milling work in conditions of individual and mass production.

Kinematic diagram

Main drive

The main movement is driven by a flange electric motor through an elastic coupling.
The spindle speed is changed by moving three toothed blocks along the splined shafts.
The gearbox provides the spindle with 18 different speeds.
A graph of machine spindle speeds, explaining the structure of the main movement mechanism, is shown in Fig. 9.

Feed drive

The feed drive is carried out from a flange electric motor mounted in the console. By means of two three-crown blocks and a movable gear wheel with a cam clutch, the feed box provides 18 different feeds, which are transmitted through a ball safety clutch to the console and then when the corresponding cam clutch is turned on to the screws for longitudinal, transverse and vertical movement.
Accelerated movements are obtained when the high-speed clutch is turned on, the rotation of which is carried out through intermediate gears directly from the feed electric motor.

The clutch is interlocked with the working feed clutch, which eliminates the possibility of their simultaneous activation.
A graph explaining the structure of the machine feed mechanism is shown in Fig. 10. Vertical feeds are 3 times less than longitudinal ones.

bed

The bed is the base unit on which the remaining components and mechanisms of the machine are mounted.
The frame is rigidly fixed to the base and secured with pins.

Swivel head

The rotating head (Fig. 14) is centered in the annular recess of the frame neck and is attached to the foam with four bolts that fit into the T-shaped groove of the flange.
The spindle is a two-support shaft mounted in a retractable sleeve. Axial play in the spindle is adjusted by grinding rings 3 and 4. Increased play in the front bearing is eliminated by grinding half rings 6 and tightening nut 1.

through the hole, unscrewing screw 2 unlocks nut 1;
Nut 1 is locked with a steel rod. The nut is tightened along the spindle collar by the cracker and this moves the inner race of the bearing!
The gap between the bearing and the spindle collar is measured with a feeler gauge, after which the half rings 6 are ground to the required amount."
the half rings are put in place and secured:
Flange 5 is screwed in. To eliminate radial play of 0.01 mm, the half rings must be ground to approximately 0/12 mm.
After checking the play in the bearing, the spindle is run in at maximum speed.
The amount of heating of the bearings is characterized by measuring the temperature of the inner surface of the conical hole with an electric thermometer.
The excess surface temperature of the tool cone should not exceed 55°C.
Rotation is transmitted to the spindle from the gearbox through a pair of bevel and a pair of cylindrical gears mounted in the head.
The bearings and gears of the rotating head are lubricated from the frame pump, and the sleeve movement mechanism is lubricated by injection.

Gearbox

The gearbox is mounted directly in the frame body. The connection of the box to the electric motor shaft is carried out by an elastic coupling, allowing misalignment in the motor installation of up to 0.5-0.7 mm.
The gearbox can be inspected through the window on the right side.
The gearbox is lubricated by a plunger pump (Fig. 13), driven by an eccentric. Pump performance; about 2 l/min. Oil is supplied to the pump through a filter. From the pump, the oil flows to the oil distributor, from which it is discharged through a copper tube to a peephole for monitoring the operation of the pump and through a flexible hose to the rotating head. The gearbox elements are lubricated by splashing oil coming from the holes in the oil distributor tube located above the gearbox.

Gearbox

The gearbox allows
select the required speed without sequentially passing through intermediate steps.
Rail 1 (Fig. 16). moved by shift handle 5, by means of sector 2 through fork 8 (Fig. 15), moves the main roller with shift disk 7 in the axial direction.

The shift disk can be turned by speed indicators 9 through bevel gears 14 and 16. The disk has several rows of holes of a certain size located opposite the pins of the racks 17 and 19.
The racks engage in pairs with a gear wheel 18. A shift fork is attached to one of each pair of racks. When moving the disk by pressing on the pin of one of the pair, reciprocating movement of the slats is ensured.
In this case, the forks at the end of the disk stroke occupy a position corresponding to the engagement of certain pairs of gears. To eliminate the possibility of hard stop of the gears when switching, the pins of the 6 racks are spring-loaded.
Fixation of the dial when choosing a speed is ensured by ball 13, which slides into the groove of sprocket 10.
Spring 11 is adjusted by plug 12, taking into account clear fixation of the dial and normal force when turning it.
Handle 5 (see Fig. 16) is held in the on position by spring 4 and ball 3. In this case, the handle tenon fits into the groove of the flange.
Correspondence of speeds to the values ​​​​indicated on the indicator is achieved by a certain position of the bevel wheels along the mesh. Correct engagement is established by cores at the ends of the mating tooth and cavity or by setting the indicator to the speed position of 31.5 rpm. and the disk with forks to the speed position of 81.5 rpm. The gap in the engagement of the conical pair should not be more than 0.2 mm, since the disk can rotate up to 1 mm due to this.

Gearbox

The feed box provides working feeds and rapid movements of the table, slide and console. Kinematics of the feed box, see Fig. 8.
The rotation speeds obtained as a result of switching the blocks are transmitted to the output shaft 7 (Fig. 17) through a ball safety clutch, a cam clutch 15 and a sleeve 16, connected by a key to the cam clutch 15 and the output shaft 7.
When the feed mechanism is overloaded, the balls in contact with the holes of the cam bushing 17 compress the springs and come out of contact. In this case, the gear 2 slips relative to the cam sleeve 17 and the working feed stops. Rapid rotation is transmitted from the electric motor, bypassing the feed box, to the gear 6, which sits on the shank of the clutch housing 10 and thus has a constant speed. During installation, it is necessary to check the tightness of nut 8. The friction clutch housing must rotate freely between the gear 9 and the thrust bearing.
The clutch discs are connected through one another to the clutch housing, which constantly rotates, and to the sleeve 4, which, in turn, is connected by a key to the output shaft 7.
When the cam clutch 15 is pressed on the end of the sleeve 14 and then on the nut 5, the disks 11 and 12 are compressed and transmit rapid rotation to the output shaft 7 and the gear 9.
When adjusting the safety clutch, cover 19 is removed (Fig. 18) and plug 20 is unscrewed.

Feed switch box

The feed switch box (Fig. 19) is included in the feed box assembly. The principle of its operation is logical to the operation of the gearbox.
To prevent the disk 21 from moving in the axial direction, the roller 29 is locked in the on position with a ball 24 and a sleeve 28. Getting into the annular groove of the roller 27, the balls release the roller 29 from fixation when the button is pressed
The rotation of the shift disk is fixed: 21 by a ball; 22 through a locking fork 25 connected by a key to the shaft 29. The force of fixing the rotation of the shift disk is regulated by a threaded plug 23.
The feed box is lubricated by spraying oil coming from the console lubrication system. In addition, in the lower part of the console plate there is a hole (drilling into the discharge cavity of the lubrication pump), through which the lubricant flows to the oil distributor of the feed box.
Two tubes are taken from the oil distributor: a peephole for monitoring the operation of the pump and for lubricating the bearings. Directly through the oil distributor, oil is supplied to lubricate the friction clutch bearings.

Console

The console is the basic unit that unites the units of the flock feed chain. A number of shafts and gears are mounted in the console, transmitting movement from the feed box in three directions - to the screws of the longitudinal, transverse and vertical feeds, the high speed activation mechanism and the feed electric motor. The “console” unit also includes a mechanism for switching on transverse and vertical feeds.
Gear 8 (Fig. 20) receives movement from wheel 9 (see Fig. 17) and transmits it to gears 7, 4, 2 and 1 (see Fig. 20). Gear 4 is mounted on a bearing and can transmit movement to the shaft only through the cam clutch 6 connected to the shaft. Then, through a pair of cylindrical and a pair of conical wheels, the movement is transmitted to screw 14 (Fig. 21).
The engagement of the conical pair 10 and 15 is adjusted by compensators 12 and 13 and fixed with a screw included in the drilling of pin 11.
Bushing 16 is of technological importance and is never dismantled.
The vertical movement nut is fixed in the column. The column is installed exactly along the screw and secured with pins on the base of the machine.
Gear 2 (see Fig. 20), mounted on the sleeve, through a key and splines constantly rotates the splined shaft IX of the longitudinal stroke chain.
The cross feed screw X rotates through gear 2 and wheel 1, which is freely seated on the shaft, when the cross feed cam clutch is engaged.
To dismantle shafts VII and VIII, it is necessary to remove the feed box and the cover on the left side of the console, and then unscrew the stoppers on gears 8 and 9 through the console window.
The slide can be dismantled after the spline shaft IX has been removed.
When removing the slide, you must also remove the cross feed bracket or cross feed screw.

Mechanism for turning on vertical and transverse feeds

The mechanism for turning on the vertical and transverse feeds is made in a separate housing and controls the activation and disengagement of the cam clutches of the transverse and vertical feeds and the electric feed motor. When the handle moves to the right or left, up or down, the associated drum 32 (Fig. 23) makes corresponding movements with its bevels Controls through a lever system the activation of cam clutches, and through pins - instantaneous limit switches located below the mechanism and designed to reverse the feed motor. Rod 33 connects the drum with a backup handle. In its middle part, a lever is attached to it, on which cams act, limiting the transverse stroke. At the end of the rod there is a lever to limit vertical movements. When turning the transverse stroke on and off, the rod moves translationally, and the vertical stroke rotates.
The “lock” that prevents the handwheel and manual movement handles from turning on when the mechanical feed is turned on, includes a rocker arm 6 and a pin 5 (see Fig. 20).
When turning on the claw clutch with the handle, When moving the clutch, the rocker arm 6 turns, moves the pin, which rests against the bottom of the cam clutch of the flywheel or handle, and moves them away, preventing the cams from engaging.
If the system has increased play, it is necessary to press out the shaft plug VII, loosen nut 30 (see rps. 23) and tighten screw 31. After checking the play, it is necessary to carefully lock nut 30.
The console lubrication system includes a plunger pump (Fig. 24), a spool valve (Fig. 25), an oil distributor and tubes extending from it that supply oil to the bearings, gears, lateral and vertical movement screws. A plunger pump for lubrication of the console, feed box, and mechanisms of the table-slide assembly sucks oil through the filter mesh from the oil bath and supplies it through a tube to the spool valve.
From the spool valve there are piping units for lubrication of the vertical guides of the console, to the fitting of the flexible lubrication hose of the table-slide assembly and to the oil distributor of the console. Pump capacity is about 1 l/min.

Table and slide

The table and slide (Fig. 26) provide longitudinal and transverse movements of the table.

The lead screw 1 receives rotation through the sliding key of the sleeve 9, mounted in the bushings 5 ​​and 7. The sleeve through the splines receives rotation from the cam clutch 6 when it engages with the cams of the sleeve 5, rigidly connected to the bevel gear 4. The sleeve 5 has a gear rim, with which engages the round table drive gear. Cam clutch 6 has a toothed ring for rotating the longitudinal feed screw when moving from the handwheel. Gear 45 (Figure 30) is spring-loaded in case a tooth hits a tooth. Engagement with gear 45 can only occur if clutch 6 is disengaged from sleeve 5 (see Fig. 20).
Thus, handwheel 24 (Fig. 30) is blocked during mechanical feeds.
Nuts 2 and 3 of the lead screw (Fig. 26) are located on the left side of the slide. The right nut 3 is fixed with two pins in the slide body, the left nut 2, resting its end against the right one, when turning it with a worm, selects play in the screw pair. To adjust the gap, it is necessary to loosen nut 11 (Fig. 27) and, by rotating roller 10, tighten nut 2 (Fig. 26). The choice of backlash must be made until the backlash of the lead screw, checked by turning the longitudinal stroke handwheel, is no more than 3-5° and until, when moving the table manually, the screw does not jam in any area necessary for the working stroke.
After adjustment, you need to tighten the lock nut 11 (see Fig. 27), fix the roller 10 in the installed position.
The table at its ends is connected to the lead screw through brackets, the installation of which is carried out according to the actual location of the screw, and is fixed with control pins. Thrust bearings are mounted at different ends of the screw, which eliminates the possibility of its operation in longitudinal bending. When installing the screw, a preload of the lead screw is ensured with nuts with a force of 100-125 kg.
The gap in the directions of the table and slide is selected using wedges. Adjustment of table wedge 12 (Fig. 28) is carried out with loosened nuts 13 and 15 by tightening screw 14 with a screwdriver.
After checking the adjustment by manually moving the table, the nuts are securely tightened.
The gap in the slide guides is adjusted by clip 17 using absorbent 10. The degree of adjustment is checked by moving the slide manually.
The clamping of the slide on the console guides is ensured by strap 8 (see Fig. 26).

Electrical diagram

The electrical circuit allows you to operate the machine in the following modes: “Control from handles”, “Automatic control” of longitudinal movements of the table” “Round table”.

The machine is connected to the network and disconnected using the input switch S 1. The operating mode is selected using switch S 6. Operation of the machine in setup mode with the spindle not rotating is ensured by setting the reversing switch S 2 to the middle bullet position.

ATTENTION!

BEFORE DISCONNECTING THE MACHINE FROM THE NETWORK OR PERFORMING REVERSE WHEN THE ELECTRIC SPINDLE MOTOR IS RUNNING, IT IS NECESSARY TO DISCONNECT THE ELECTRIC MOTOR WITH THE “STOP” BUTTON.

To facilitate switching of spindle and feed speeds, the machine provides a pulse switching on of the spindle electric motor with a button and the feed motor - pulse limit switch S 14. When you press the S 9 button, K4 and K"1 are turned on. N.O. contacts K1 turn on the short-circuit relay, which, due to its N. contact becomes self-powered, and the N. contact breaks the power circuit K4.
- When controlled from the handles, the operation of the electrical circuit is ensured by closing the operating circuits through the contacts of the S17 command devices; S19; S15;S16;S20 The feed electric motor is switched on and off by two command devices: for longitudinal feed S 17; S 19, for vertical and transverse feed - S5; S6. Turning on and off spindle rotation is carried out respectively with the buttons “Start”, S 10, S 11, “Stop” 7. S8. Using the “Stop” button, simultaneously with turning off the spindle rotation electric motor, the feed electric motor is also turned off.
The rapid movement of the table occurs when you press the S 12 “Fast” button, which turns on the short-circuit starter solenoid of the high speed V1.
Braking of the spindle electric motor is electrodynamic and is carried out by starter K2, which creates a direct current circuit from rectifier VI to the stator winding. Voltage relay K1 serves to protect diodes from breakdown. The voltage of the T1 winding is 36 V at a network voltage of 220 V and 65 V at a network voltage of 380 V.
When working on one of the feeds, the possibility of accidentally turning on another feed is mutually excluded; blocking is carried out by limit switches S 15-S19.
For automatic control, switch S 6 must be set to the “Automatic cycle” position. In addition, it is necessary to mechanically switch the roller located in the machine slide to the “Automatic cycle” position.
In the last position of the roller, the longitudinal stroke clutch is locked and the limit switch S 20 is pressed.
Automatic control is carried out using cams installed on the table. When the table moves, the cams, acting on the longitudinal feed activation handle (see Fig. 34) and the upper sprocket 2, make the necessary switches in the electrical circuit and mechanisms.
The high speed control in automatic cycles is carried out by the limit switch S 18. The limit switch S 20 eliminates the possibility of switching on transverse and vertical feeds in this operating mode. The operation of the electrical circuit in this mode is explained by the Diagram and occurs as follows: with handle 1 turned off, rod 4 must be in the deep cavity of sprocket 3, contacts 41 -17 of limit switch S 18 must be closed (position 0 in the diagram). Turning handle 1 to the right turns on the rapid movement of the table to the right (position 1 in the diagram). The high speed is switched off at the desired point when cam 3 acts on sprocket 2 (position 2 in the diagram), when turning it, rod 4 falls into the small cavity of sprocket 3, and both contacts of limit switch S18 open. The table continues to move as it feeds. When cams 1a and 3b act on handle 1 and sprocket 2, the feed is reversed and high speed is turned on to the left (positions 3 and 4 in the diagram). When handle 1 passes through position 0, the starter Ko is powered through contacts 33-43 of the limit switch S 18. Rod 4 at this moment must be in the area of ​​constant curvature of sprocket 3 (position 3 on the diagram). The high speed to the left is turned off and the cycle ends when handle 1 is moved by cam 6 to the neutral position (position 5 in the diagram).
The operation of the electrical circuit in other cycles occurs similarly.

The VM127 vertical milling machine belongs to one of the most common categories of devices designed for milling small parts and medium-sized products. The unit is able to process not only vertical and horizontal planes, but also inclined planes. The device is used for production in small batches and for the production of single products.

Machine characteristics

The technical specifications for the machine are:

• spindle cone type - 50AT5;
• the maximum value of the quill movement along the axis is 80 mm;
• number of speeds - 18;
• a single revolution of the dial is equal to moving the quill by 4 mm;
• spindle speed - up to 1999 rpm;
• the spindle head can rotate 450 in both directions;
• number of feed stages - 18;
• number of grooves - 3;
• machine weight - 4249 kg;
• parameters of the working machine surface - 1600 by 401 mm;
• maximum longitudinal movement of the table - 1010 mm;
• vertical movement (maximum possible) - 401 mm;
• lateral movement (maximum) - 300 mm;
• feed speed in the transverse and longitudinal directions - 25-1249 mm/min;
• vertical feed speed - up to 416.5 mm/min;
• VM127 dimensions in length, width and height, respectively - 256*226*250 cm.

Machine spindle

This milling machine is equipped with two electric motors. The first main propulsion engine with a power of 11 kW. The second feed drive motor has a power of 2.1 kW.

The electrical circuit of VM 127 is supplemented with an electric pump designed to supply coolant to the working units of the unit. The power of the electric pump is 0.12 kW. The pump is capable of producing up to 22 liters of coolant per minute.

Machine Features

The device is equipped with a fairly powerful engine, which allows it to be equipped with cutting tools made of high-speed steel. The milling unit can be used on production lines that include a large number of devices.

The unit operates in both automatic and semi-automatic modes when setting up its main components.

Popularity of the machine small businesses due to the ease of its operation. The device has mechanisms that can be easily adjusted if necessary. This allows the device to be used in harsh conditions. VM127 is easy to use and can be quickly repaired by any qualified technician.

Among the features of the machine are:

• the equipment of the device is automatically lubricated;
• reliability of the unit in difficult operating conditions;
• the presence of a servo-control feed drive with feedback;
• the ability to equip the device with a digital display device;
• the ability to perform milling under different conditions due to smooth control of feed speed and powerful drive;
• functioning of the lubrication system for the apparatus elements, operating in semi-automatic mode.

The device has mechanisms that significantly simplify the process of its use. The following elements provide this:

• automatic feeding of longitudinal intermittent type;
• overload protection clutch;
• feed stops that turn off the working elements of the unit;
• feed activation blocking system;
• blocking of manual and mechanical feeds;
• system that brakes the spindle.

Basic machine mechanisms

The vertical milling unit includes the following elements:

• bed;
• console;
• gearbox;
• gearbox;
• box that switches spindle speeds;
• table-sled;
• clamping mechanism for cutter;
• swivel head;
• electrical equipment.

The bed serves as a support for the machine. All the main devices of the unit are mounted on it. The frame is secured to a secure base using pins.

The console consists of numerous shafts and gears. Due to them, rotation is transmitted from the feed box to the transverse and vertical feed screws.

The gearbox is located inside the device. This mechanism must be lubricated for normal operation. Lubrication occurs by spraying a special liquid using a plunger pump. The process occurs automatically.

The feed box is located on the left side of the console and is lubricated by its own system.

The spindle speed switching mechanism is located on the left side of the unit. The box design allows you to switch speeds in any chosen order.

The slide performs the function of moving the products processed by the machine.

The clamping mechanism for the cutter operates according to an electromechanical circuit.

The rotary head is installed in the upper part of the frame. The installation material in this case is bolts. Centering of the head occurs in a circular groove of the frame.

The spindle of the apparatus is a shaft consisting of two supports. It is located in a retractable sleeve. Spindle play often needs to be corrected. The operation is carried out by grinding the rings located in the unit.

Electrical equipment of the device

The following description is typical for the electrical equipment of the machine:

• DC voltage - 65 V;
• the total current from the three motors of the machine is 20 A;
• local lighting voltage - 24 V;
• AC voltage - 110 V;
• current value for fuses and switch is 63 A.

The milling installation VM 127M, which replaced the outdated model VM 127, is equipped with 5 switches:

• introductory;
• blocking feeds during cutter clamping;
• starting a pulse-type feed drive when the machine operator changes the speed of its operation;
• turning off the cooling pump;
• turning off the desktop drive.

Model 127M contains special starters:

• triggering spindle braking;
• recording the time of stopping and turning on the spindle;
• fixing the spindle braking indicator;
• connecting a voltage of 380 V to the electric motor and pump of the machine;
• launching rapid movement;
• regulating drive activation.

Electrical equipment is characterized by three-phase power supply. Secondary sources are powered by AC (110 V) and DC voltage of 56 V.

This milling machine has two control panels: front and side. The following tasks are launched on the front console:

• spindle stop;
• turning on the spindle;
• moving feeds at an accelerated pace;
• launching the emergency shutdown function.

The side console is equipped with modes:

• shutdown in case of emergency;
• turning on the cooling pump;
• clamping and releasing the cutter;
• spindle pulse switching.