Drilling and slotting machine manufacturer details SVPG

The manufacturer of the slotting and drilling machine SVPG-2a is Dnepropetrovsk machine-tool plant DSPO currently OOO "Stankostroitel".

In the USSR, the Dnepropetrovsk Machine Tool Plant specialized in milling machines throughout its existence. However, in May 1999, this largest machine tool production in Ukraine was restructured, and as a result six independent enterprises appeared, one of which is Stankostroitel LLC.

In Russia, the Kirov Machine-Tool Plant produces drilling and grooving machines SVPG-1e, which have one working table.

SVPG-2a Drilling and grooving machine. Purpose, scope

Drilling and grooving machine SVPG-2a is designed for grooving and drilling holes simultaneously in two wood products.

The machine bed is one-piece, box-shaped. Mounted on the bed: two tables with clamps operating on compressed air, with hydraulic regulation of the working feed speed. The tables have horizontal working feed and vertical adjustment movement.

The feeding of the table to the depth of the groove and the clamping of the workpiece are pneumatic. All this increases the productivity of the machine (in comparison with SVPG-1R) more than twice.

The drive of rotation and oscillation of the spindle is from a two-speed electric motor. The spindle is double-sided, the cutting tool is fixed on both sides. The reciprocating movement of the spindle is carried out on linear rolling bearings. Due to the fact that the transmission from the engine to the spindle is belt-driven, and the spindle itself moves along the length of the groove on the slide, a high accuracy of the groove being drilled is achieved.

The working movement of the tables with clamped parts to the cutting tool is performed alternately in a continuous cycle. Table retraction is accelerated.

The machine is equipped with a special spindle lock in the extreme position at all groove lengths, scales of working and setting movements, as well as a device for basing the workpieces on the tables.

The principle of operation of the grooving machine

The workpieces are machined on the machine by milling with end mills with axial and radial feeds simultaneously when grooving and only with axial feed when drilling with drills.

The processing cycle is semi-automatic with manual installation of blanks and their removal after processing.

Clamping of workpieces, working feed, return to the initial position and release of the clamp alternately on both tables is carried out in automatic mode with an adjustable duration of the processing cycle.

When the "stop machine" button is pressed or the compressed air pressure in the pneumatic system drops below 0.4 MPa (4 kgf / cm2), the machine drive is turned off, the tables return to their original position, and the clamps release the workpieces regardless of the processing phase of the installed workpiece.

Basic movements in the machine

The machine has the following working movements:

• rotary movement of the spindle;
• a reciprocating spindle perpendicular to its axis in a horizontal plane;
• reciprocating tables parallel to the spindle axis;
• Reciprocating pressure anchors.

In addition to working movements on the machine, there are adjustment movements:

• vertical movement of the table;
• rotation of the table around a horizontal axis parallel to the spindle axis;
• vertical and horizontal clamping.

The reciprocating movement of the spindle is made with an adjustable amplitude and frequency of oscillations, and the table with an adjustable speed of the working feed.

SVPG General view of the drilling and grooving machine

1. Bed SVPG-2А.11.000 - 1
2. Table SVPG-2A.22.000 - 2
3. Clamp SVPG-2A.27.000 - 2
4. Tank SVPG-2А.29.000 - 1
5. Spindle SVPG-2А.31.000 - 1
6. Crank SVPG-2A.50.000 - 1
7. Fencing SVPG-2A.79.000 - 1
8. Chip collector SVPG-2A.76.000 - 2
9. Pneumatic hydraulic equipment SVPG-2A.66.000 - 1
10. Electrical equipment SVPG-2A.80.000 - 1

1. Slot length adjustment screw
2. Nut for fixing the set length of the groove
3. Spindle position lock
4. Handle for fixing the table from vertical movement
5. Handwheel for vertical table movement
6. Table work feed stop fixing screw
7. Stop for limiting the working feed of the table
8. Stop for limiting the table travel back
9. Screw for fixing the stop for limiting the table travel back
10. Clamp position fixing handle
11. Machine stop button
12. Spindle start button
13. Signal light "Spindle rotating"
14. Continuous cycle switch
15. Signal light Machine under voltage
16. The handle of the introductory machine
17. Spindle speed selector knob
18. Zero position fixing pin
19. Handle for fixing the table on the pivot axis
20. Belt tension screw
21. Handle of disengagement of a flywheel of a friction transmission
22. Fixing plate of the disconnected spindle oscillation drive
23. Feed rate setting button
24. Belt tension nut

Kinematic diagram of the slotting and drilling machine SVPG-2A

The kinematic chains of the machine carry out the following movements:

1. Rotation of the spindle of cutters, drills
2. Oscillatory movement of the spindle head in the horizontal plane
3. Working feed of tables from pneumatic cylinders along the spindle axis
4. Positioning manual movement of the table up and down
5. Clamping the workpiece using a plunger pneumatic cylinder
6. Tilting tables around a horizontal axis parallel to the spindle axis
7. Fixing tables in the desired position

On the shaft of the electric motor 1, a pulley 2 and a roller 3 are fixed, the rotation from which through the belt 5, the pulley b is transmitted to the spindle I, and through the flywheel 7 to the intermediate shaft II.

The intermediate shaft II is fixed on the sub-engine plate 8 with the ability to rotate on the axis III, which provides a change in the gear ratio of the friction disc transmission 3, 7 by moving the flywheel 7 on the shaft II, and, accordingly, the oscillation frequency of the spindle I.

On the shaft II a pulley 9 is rigidly fixed, the rotation from which is transmitted through the belt 10 to the pulley 11, fixed on the axis IV.

On the pulley 11 with the possibility of movement in the radial direction and fixation by means of a nut, a rack is fixed, which is a finger of the crank mechanism.

The spindle I, perpendicular to the axis of rotation along two guides, drives the crank mechanism through the connecting rod 12, the lever 13 and the shackle 14. The lever 13 is fixed on the frame by means of the V axis. Belt 5 is tensioned by moving the motor M relative to the spindle I with a screw, and belt 10 by a spring-loaded roller, which is fixed on the axis VI by means of a lever.

On the connecting rod 12 with axial movement on the thread, a finger is fixed, which secures the spindle I from movements (vibrations) by inserting it into the T-shaped groove of the pulley 11.

The tables of the machine have a working feed by means of pneumatic cylinders, an adjusting vertical movement by means of gears 15 and 16 and screw pairs 18 and 17, and an inclination around the horizontal axes VII and VIII with fixing the required location of their working surfaces relative to the direction of oscillation of the spindle with nuts.

General layout of the drilling and grooving machine SVPG

All components of the machine are mounted on the bed, namely:

• on the upper plane - spindle and control panel;
• on the side frames, tables with clamps;
• inside the bed there is a niche for electrical equipment, an electric motor, a friction flywheel, two poly-V belt drives, a crank and rocker mechanism for driving the rotation and reciprocating movement of the spindle, as well as pneumatic control and interlocking equipment.

Stanina

The frame is cast, box-shaped, with windows for installation and maintenance, mechanisms and equipment located in it. The windows are closed with doors and covers. Inside the bed there is a niche for electrical equipment, two belt drives, a friction disc drive, a crank mechanism, a lever, an earring and a reservoir. A spindle and a control panel are mounted on the upper wall of the machine, and tables with clamps and chip collectors are mounted on the side walls.

Table (Figure 6.4)

The table includes a bracket I fixed on the bed along prismatic guides of which the slider 2 has a vertical movement with the body 3 fixed on it.

The slide 9 with the table 10 moves along the prismatic guides of the housing 3 by means of the pneumatic cylinder 8. The connection of the slide 9 with the table 10 is made by the axis II, located parallel to the direction of its movement. Around the axis, the table has an adjusting movement of the location of its working surface relative to the direction of oscillation of the spindle, which is fixed by the handle 12.

Parallel to the pneumatic cylinder 8, a plunger hydraulic cylinder 13 is fixed in the housing 3, which provides (by throttling the oil displaced from it) regulation of the working feed rate.

Clamp

The clamp is a plunger pneumatic cylinder with a spring return, consisting of a body 1, a rod 2, a spring 3 and a clamping rubberized round heel 4.

The body 2 is fixed on a round bar 5, which is attached to the table stand by means of a split sleeve 6 with a handle 7.

Tank

The tank is a container for oil, it includes a pipe 1 with two covers 2 and 3. There are two holes in the bottom cover for connecting oil lines, on the top cover there is a hole for oil, which is closed with a plug 4 with a dipstick 5 for determining the oil level and a built-in inlet check valve 6.

Spindle

The spindle includes a cast housing 1, in which, on two paired angular contact bearings with a spring preload for selecting the gaps, a shaft 2 is mounted, at the ends of which bores are made on both sides and an external thread for fastening the cutting tool by means of collets and nuts 4. In the spindle housing, perpendicular to its axis, parallel holes are made, in which linear bearings 5 ​​are fixed for vibrating the spindle and one hole parallel to the spindle axis for connecting the shackle of the vibration drive mechanism.

Crank

The crank includes an axle 1, fixedly fixed in the frame, on which a pulley 2 with a T-shaped groove is mounted by means of two radial ball bearings. In the T-shaped groove, a crank axis 3 is movably mounted, which, by means of a screw transmission 4, has a positioning movement with fixation. On the crank axis by means of a radial bearing, a connecting rod 5 of the spindle oscillation drive is fixed with a pin 6 for fixing the spindle in the extreme position. The pin 6 is connected to the connecting rod by means of a thread, and the fixation is carried out by inserting it into the T-shaped groove of the pulley 2.

Fencing

The fence includes a housing 1, guides 2 fixed on it and visors 3 and 5 mounted on the guides, a spring 4, as well as a stop 6 and 7. Visors 3 and 5 cover the cutting tool and are set to their original position by springs 4.

The initial position of the visors, depending on the size of the overhang (length) of the tool, is adjusted by stops 6 and 7.

Chip receiver

The chip receiver is a container open from above, welded from sheet iron with a branch pipe for connecting exhaust ventilation. It is attached to the table arm under the cutting tool. The bed has two chip collectors - left and right.

Drilling and grooving machine table SVPG-2A. Rice. eight

Electrical equipment of the drilling and grooving machine SVPG

Electrical diagram of the SVPG-2A slot-boring machine

General information

The electrical equipment of the machine includes a two-speed electric motor with a squirrel-cage rotor: as a spindle drive and a swing mechanism.

The electrical equipment of the machine is made for power supply from the AC 380V, 50 Hz.

Electrical parameters of the circuits:

• power circuit ~ 3; 380V; 50 Hz;
• control circuit ~ 220V, 50Hz;
• signaling circuit ~ 220V, 50Hz.

The machine is equipped with:

• panel with relay-starting protective electrical equipment;
• input circuit breaker with a remote control device with a lock;
• switch for selecting the speed of rotation of the spindle drive motor.

The control panel contains: signal lamps, buttons for controlling the machine drives.

The distribution of power circuits and control circuits for the machine is made with a PVZ wire. The choice and laying of the supply cable for connecting the machine and the power supply network is carried out by the customer in accordance with the current value indicated on the plate on the machine (3x1 + Nx1 + PEX1).

Description of the operating mode of the drilling and grooving machine SVPG-2A

The supply voltage is supplied by the Q1 switch, the presence of voltage in the machine is signaled by the H1 lamp.

By the position of the switch handle SА1, the winding circuit of a two-speed motor is assembled in YY or delta, which corresponds to a spindle speed of 12000 or 6000 rpm.

The control button SB2 turns on the K1 starter and the K2 time relay. Starter K1 with its own N.O. the contact becomes "self-catching", supplies voltage to the engine and its N.O. by contact switches on the signal lamp H2. Relay K2 closes its contact, thus preparing the dynamic braking unit activation circuit. When you press the SB1 button, it self-locks in the pressed position and breaks the power supply circuit of the K1 starter, the starter turns off and the engine is disconnected from the supply voltage, the H2 signal lamp turns off. At the same time, the contact of the starter K1 closes and the starter K3 turns on, which, with its line contacts, connects the dynamic braking unit A1 to the phase voltage of the network - 220V.

The unit is a half-wave rectifier on diodes V1 and V2. It ensures that a rectified DC current flows through the stator windings of the motor during positive half-cycles of the mains voltage. When the specified current flows, the motor creates a braking torque and provides braking and stopping of the spindle for a time not exceeding 6 s. At the end of the time delay of the K2 relay, its contact in the circuit opens and the braking unit is disconnected from the network.

Pneumohydraulic scheme of the drilling and grooving machine SVPG

Pneumohydraulic scheme of the drilling and grooving machine SVPG-2A

SVPG-2A Drilling and grooving machine. Video clip

Technical characteristics of the drilling and grooving machine SVPG-2A

Parameter name	SVPG-2A
main parameters
The greatest thickness of the workpiece to be processed, mm	125
The largest diameter of the drilled hole (milled groove), mm	30
The greatest depth of the drilled hole (milled groove), mm	90
Maximum length of the groove to be milled, mm	125
The greatest distance from the spindle axis to the table, mm	10..120
Number of spindles, pcs	2
Rotation of the table, degrees	± 25 °
Precision processing. Uniformity of the width of the groove being machined or the diameter of the hole, the constancy of the width of the shoulder along the length of the groove (hole), the perpendicularity of the axis of the hole to be machined to the surface at a length of no more than 100, mm	0,15
Highest table feed speed, m / min	3
Amount of table feed, mm	30..110
The largest number of double spindle strokes in 1 minute	140
Spindle speed, rpm	3,6
Number of service personnel	1
The smallest machining cycle of one groove, s	8000; 12000
The greatest consumption of compressed air, m³ / hour	1
Working air pressure, MPa	0,4..0,6
Electrical equipment of the machine
Mains current type	380V 50Hz
Number of electric motors on the machine, pcs	1
Cutter drive electric motor, kW	1,5 / 2,0
Dimensions and weight of the machine
Machine dimensions (length x width x height), mm	1496 x 724 x 1115
Machine weight, kg	525

DEAR BUYER!

Please read this instruction manual carefully before proceeding.

Make sure that the passport contains the stamp of the store, the signature of the seller and the date of sale of the device.

In the absence of a manual or if it was incorrectly executed upon purchase, no quality claims will be accepted.

In case of loss of the manual, claims for the quality of the juicer will not be accepted.

Check the completeness according to the scope of delivery.

When using the juicer, place it on a flat, firm, horizontal surface. Do not place it on a tablecloth, as the lack of contact of the juicer feet directly with the supporting surface can cause the juicer to move.

The juicer is not suitable for juicing berries, apricots, plums, tomatoes or overripe fruits. The gruel-like mass obtained from such fruits flows out poorly from the body and can lead to failure of the juicer motor.

Load food into the juicer hopper before starting the engine;

Clean the branch pipe of housing 2 from the remnants of the shredded product until the device is turned off and the engine is completely stopped when operating in the shredding mode;

Immerse the electric drive 1 in water or douse it with water, as well as dry plastic parts on objects whose temperature exceeds + 40 ° C.

TECHNICAL DETAILS

Rated voltage, V ............... 220

Current type - alternating, Hz ................ 50

Specific weight, kg-W-h / kg, not more ... 50

Electric juicer weight, kg, no more ... 6

Overall dimensions, mm:

length ........ 310

width ....... 215

height ........ 308

Specific productivity, kg / Wh, not less ... 0.1

Productivity - 1 glass of juice, min .... 1-3

Drip-proof version

Device class ... II

Climatic modification UHL4 in accordance with GOST 15150-69.

CONTENTS OF DELIVERY

1. Electric juicer assembly, including sieve and plug ... 1

2. Eject disc ......... 1

3. Discs for cutting vegetables ........ 1

4. Operation manual ....... 1

B. Packaging box ......... 1

SAFETY REQUIREMENTS

1. Before connecting the juicer to the mains, check if the mains voltage corresponds to the voltage indicated in the instruction manual or on the bottom of the juicer.

2. Disassemble and assemble the juicer without plugging it in.

3. Push the product to be processed into the hopper inlet only with the pusher 9. Pushing the product with your fingers is dangerous, it can cause injury.

4. When turning on the juicer, first make sure it is correctly assembled.

DEVICE PRODUCTS

On an asynchronous electric motor with a squirrel-cage rotor, a casing 1 (see Fig. 1) is installed and secured with nuts, which simultaneously fix the position of the housing 2 on the casing.

A disc is mounted on the shaft of the above electric motor, which serves as a support for a sieve 3 and a grating disc 4 (or discs ^ and /), which are fastened with a nut 5. In juicer mode, a plug 10 is installed in the hole in the housing 2 (see Fig. 2), which prevents splashing juice.

When shredding vegetables or fruits, the plug 10, the sieve 3, the grating disc 4 are removed and the disc 6 and disc 7 are installed in their place.

The body 2 is closed with a lid 8 and secured with a bracket, which is at the same time a handle for carrying the juicer. A pusher 9 is provided for feeding vegetables and fruits.

Grinding vegetables and fruits is carried out using a grating disc 4. Juice from the sieve 3 enters the housing 2 and flows down the drain chute into the dishes placed under the groove of the housing 2, and the pulp remains in the sieve.

To remove the mash, there is a special device installed in the cover 8, consisting of a handle and an ejector. If the knob is set to position 1, the device turns off and the pulp remains in the sieve cavity. When the handle is moved to position 2, the pulp is removed through the upper channel of the body into the placed dishes.

The juicer is connected to the network using a cord with a plug and a switch installed at the bottom of the casing.

PREPARATION AND MAINTENANCE

Before use, disassemble the juicer according to fig. 1, rinse the parts in warm water and reassemble according to your chosen operation. After assembly, check the tightness of nut 5 and the presence of a gap between the cover hopper 8 and the grating disc 4, for which it is necessary to turn those a hard disc through the opening of the hopper. The ejector handle must be in position 1.

If the disc does not turn, it is necessary to increase the gap between the feed hopper and the grating disc. The gap can be reduced by improper storage due to the deflection of the lid. It is necessary to remove the cover 8 and cut the hopper by 0.5 mm.

In the process of work, if increased vibration appears, it is necessary to remove the pulp. When ejecting the mash, the ejector may touch the sieve wall. The characteristic sound generated by this does not indicate abnormal operation of the juicer.

At idle speed, it is not recommended to move the handle to position 2, since when the ejector comes into contact with the sieve, burrs and small plastic chips are formed on it, which leads to premature wear of the ejection device.

After 30 minutes of operation, stop the juicer for 10 minutes to cool the engine.

At the end of the work, disconnect the juicer from the mains, disassemble, rinse with soapy water, rinse thoroughly with clean water, dry and collect again. The water temperature should not exceed + 40 ° C.

If plaque appears, especially from carrots, wipe the plastic parts with baking soda on a damp cloth.

When washing the sieve 3, protect it from damage, as this can lead to increased vibration.

OPERATING PROCEDURE

When operating in juicer mode, install the plug 10 into the hole in the housing 2, and install the housing 2 on the casing 1, having previously aligned the protrusions on its bottom with the nuts on the casing. On the protruding end of the electric motor disk, install a sieve 3, a grating disk 4 and tighten the nut 5. Install the cover 8 and press it with a bracket. The lid 8 must adhere to the body 2. The clip must fall into the recess of the projections on the lid 8. Insert the pusher 9 into the opening of the loading hopper on the lid 8. Turn on the juicer. its out of order.

Cut the pre-washed vegetables into large pieces that would pass into the hopper filling hole, and load them into the hopper cover 8, lightly pressing them against the grating disc 4 with the pusher 9. Do not press the pusher too hard or harshly, as this can lead to increased vibration and stoppage engine.

After processing 300-350 g of products, stop loading and let the juicer run for a while for better juice extraction.After that, by smoothly moving the handle of the ejection device from position 1 to position 2, remove the pulp in 2-3 steps, while not allowing the engine to stop. When the pulp is ejected, the engine is braked, which is due to the principle of operation of the ejection device. In this case, a small part of the pulp remains in the sieve, "hA> does not interfere with the continuation of the loading. After three removal of the pulp, stop the juicer and clean the sieve 3, cover 8 and body 2 from the residues of pulp. The sticking of the pulp on the lid 8 is not a disadvantage of the juicer, but depends on properties of fruits and vegetables When processing fruits with a high sugar content, a sticky layer forms on the inside of the lid, which prevents the ejection of the pulp. 2 did not fall into the casing 1, as this could damage the juicer motor.

To work in vegetable cutting mode, remove the plug 10, instead of the sieve 3 and grating disc 4, install the ejection disc 6 (with the inscription upwards) and the disc 7 with the teeth of the required size up.

When operating in vegetable cutter mode, make sure that the nozzle of housing 2 is not clogged with vegetables and fruits. To do this, turn off the juicer and use a wooden object to clean the branch pipe, as well as the cut particles remaining in the housing 2 and stuck between the ejection disc 6 and the cutting disc 7.

STORAGE RULES

Store the juicer in its packaging, in a dry, ventilated place, protected from direct sunlight, at a temperature not lower than + 5 ° C. Do not leave the juicer near open flames or hot objects. Wipe all parts dry first. There is no need to lubricate the discs.

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Description of the passport and manual for SVP-2

Here is the technical passport for machine SVP-2.
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Completeness of the data sheet:
This passport is 100% complete and contains all the necessary sections and volumes.
Scheme of the SVP-2 machine is also necessarily contained.
section electrical equipment, contains a description and all diagrams, including principle and kinematic.
Operation manual for SVP-2 and all contents of the section of mechanics and hydraulics.

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information immediately

Drilling machines designed for drilling through and blind round holes in the material. Depending on the direction of drilling, the machines are divided into vertical and horizontal. By the number of simultaneously working drills, single-spindle and multi-spindle drills are distinguished.

Vertical boring machines have one, as in the SvP machine (Fig. 136), a vertically located spindle, moved along its axis using a lever. The belt pulley is put on a hollow shaft-coupling that rotates with the pulley. Inside, along the entire length of the coupling, there is a groove into which a spindle enters with its ridge, which is placed inside the coupling. Such a fastening allows not only to transmit the movement from the clutch to the spindle, but also to move it vertically, which is carried out either manually by means of a lever covering the clutch with a fork, or using a foot pedal and a lever transmission. To maintain the material in the desired position for processing, there is a swivel arm.

Technical characteristics of the SvP machine

Multi-spindle vertical machines are mainly used for drilling knots. The presence of different diameters of special (plug) drills allows you to select them according to the required diameter without rearrangement.

Horizontal boring and grooving machines have a drill fixed in a horizontal shaft (spindle) with a chuck. The spindle moves horizontally along the axis using a lever. As a result, the drill goes deep into the wood. The most commonly used are slot and twist drills.

Drilling and grooving machine SvG(fig. 137) is similar to drilling machines in its structure and work. The difference lies in the drills used: for the selection of grooves and nests, they mainly use slot drills, and for drilling - twist drills, which give the best ejection of chips from the hole, and plug drills for drilling knots. The machine is equipped with a movable table movable horizontally in a direction perpendicular to the spindle axis using a lever and vertically using a screw with a flywheel.

When working with a drill, the nest is obtained with rounded edges. Therefore, to give the nest a rectangular shape, the machine is equipped with a special chisel for trimming the edges of the nest. In the absence of such a chisel, using a chisel, the protrusions of the nest are cut or chamfers are removed from the spikes inserted into these nests.

Technical characteristics of the SvGD-3 machine

Drilling and grooving machine SVPA with automatic feed equipped with a spindle that oscillates in the horizontal plane. The machine is equipped with a hydraulic drive for fixing the workpiece and for feeding the drill to a predetermined depth. The work table is moved using a foot pedal.

Technical characteristics of the SVPA machine

Multi-spindle drilling and filler machines used mainly in the manufacture of parts connected on dowels.

Such machines have several fixed or sliding drilling spindles, a table for strengthening parts, and an automatic feed drive.

Nine-spindle drilling machine SV-9(fig. 138) has three groups of drilling heads, a table with clamps for fixing and feeding bars, a crank-yoke system for setting the depth of the table feed with a rack and pinion feed.

Technical characteristics of multi-spindle machines

Drilling aggregate head designed for drilling holes and grooves in parts. The head is installed on modular machines. When installed on continuous-feed machines, a special device is mounted to it, with the help of which the head spindle moves after the product during the drilling process. The heads can also be installed on conventional machines.

Drilling head AG2-4 on a skid (Fig. 139) consists of a body, inside which hydraulic cylinders are installed, a carriage with an electric motor fixed to it and the drilling head itself. The movement of the carriage along the guides of the body is carried out hydraulically by means of a rod, and the speed of the working stroke is regulated by means of a throttle (damper). The head can work without attachments with a single drill and with attachments: three-spindle type AG2-4-3 and five-spindle type AG2-4-5 for simultaneous drilling in details of three or five holes. Inside the nozzle body, 4 rollers are mounted, 3 of which are spindles with drill chucks at the ends, and the fourth - intermediate - serves to transfer rotation to one of the spindles from the drive gear of the head.

Technical characteristics of the drilling head AG2-4

Chain slotting machine DCA-2(Fig. 140) is equipped with a cutting milling chain, consisting of pivotally connected links and sharpened in the shape of the tooth (cutter) of the cutter. The chain is driven by a drive sprocket and is guided by a special bar (tire). Cutting (chiselling) occurs when the chain is buried in the wood. The nest is rectangular with a rounded bottom. The machine support is equipped with a hydraulic drive to feed the chain to a predetermined depth.

The workpiece to be machined is fixed on a movable table that moves vertically with a screw and horizontally with a lever. The table is equipped with a screw for fastening the part and stops (stops) that limit the horizontal movement of the table in accordance with the length of the selected socket.

For the possibility of tensioning the milling chain, the guide rail is made sliding (using a screw). The chain tension must be adjusted before operation. A slack chain will give an uneven finish to the side of the jacks and can slip off the bar; a chain that is too tight can break. Usually, the chain is pulled so that with a slight effort of the hand it can be pulled back in a straight section to 3-5 mm from the bus.

Technical characteristics of the DCA-2 machine