Used and new woodworking machines. Thicknesser (throughput) machines Thicknesser machine sr 3 6

A used industrial thicknessing machine, model CP3-6, is one of the best representatives of the legendary Stavropol plant “Krasny Metallist”. We can also say that the Soviet T-34 tank was recognized as the best tank of the Second World War, and the CP3-6 surface planer became the best small thicknesser of the 70-80s of the last century. The thicknesser has a rigid cast frame. Despite its small size, the machine has a very decent weight of 600 kg. Such a large mass (it is solid cast) ensures good vibration damping and, as a result, high purity of material processing. A two-knife (sometimes four-knife) shaft has high maintainability; replacement of bearings can be carried out by personnel with not very high qualifications without special tools. The powerful electric motor has twice the power reserve compared to its modern counterparts. The feed mechanism is very rationally implemented. Electric motor with disc variator plus gearbox. This design has worked flawlessly for decades. Some copies worked without repair of this unit for 36 years. Repair usually involves replacing worn ferrado linings from any suitable clutch disc. The gearbox used in this design has a large service life and, with minor changes, was transferred to the older model of the CP6-9 thickness planer. The entire assembly (electric motor-variator-gearbox) is used in the CP6-9 thickness planer, which operates under heavy loads. The chain drive drives the front grooved and rear smooth drum. The variator allows you to smoothly change the workpiece feed speed from 8 to 24 m/min. The table is cast iron, box-shaped. The lifting is controlled by a manual control mechanism. The table lifting mechanism is not the best solution for this machine. When worn, the worm pair placed inside the table tends to jam the table movement. There are two smooth rollers installed on the table. To adjust the output of the rollers to the hardness of the material being processed (hardwood or softwood), they are adjustable. Adjusting the output of the rollers above the table is done very simply and reliably. By the way, on most modern imported surface planers, the presence of rollers on the table is not included in the basic delivery, but is an option and, accordingly, is paid additionally. The claw protection is cast and made of cast iron. To prevent chipping of the wood, there is a heavy, molded front clamp where the knife exits. The electrical circuit is simple and reliable. Today, these machines are no longer in production, so we can offer you a used surface planer CP3-6 after repair. The cost of a used surface planer CP3-6 is about 50% of the cost of a modern analogue.

Description of repair work on a used surface planer CP3-6

Complete disassembly and defect detection of all thicknesser components was carried out.
The magnetic starter of the main motor has been replaced in the electrical panel.
Planer shaft bearings replaced.
The bearings of the main shaft electric motor have been replaced.
The feed gearbox has been defective.
The oil in the gearbox has been changed.
Planing knives are sharpened and installed.
Operating modes were set up and gouging quality was checked.

Characteristics of used surface planer SR 3-6

Dimensions of the workpiece, mm:


length not less
Maximum thickness layer to be removed, mm
Number of knives, pcs
Knife shaft diameter, mm
Aspiration volume, m³/hour
Shaft rotation speed, rpm
Feed speed, m/min
Total power of electric motors, kW
Dimensions, mm

Description of repair work on a used surface planer CP3-6

Complete disassembly and defect detection of all thicknesser components was carried out.
The magnetic starter of the main motor has been replaced in the electrical panel.
Planer shaft bearings replaced.
The bearings of the main shaft electric motor have been replaced.
The feed gearbox has been defective.
The oil in the gearbox has been changed.
Planing knives are sharpened and installed.
Operating modes were set up and gouging quality was checked.

Characteristics of used surface planer SR 3-6

Dimensions of the workpiece, mm:


length not less
Maximum thickness layer to be removed, mm
Number of knives, pcs
Knife shaft diameter, mm
Aspiration volume, m³/hour
Shaft rotation speed, rpm
Feed speed, m/min
Total power of electric motors, kW
Dimensions, mm

Purpose of the machine and its classificationThicknessing machine with semi-automatic feed CP3-6A
designed for planing workpieces to size according to thickness
The machine is used in woodworking enterprises,
sawmills, construction sites and other
industries related to woodworking.
On the knife shaft of this machine you can install two or four
knife
According to the degree of mechanization, the machine is classified as semi-mechanized
machines. Only the main movement is mechanized.
In terms of the number of simultaneously processed parts - single-thread; By
the number of main working bodies - two-shaft;
According to the control method, the machine belongs to machines with software
control in setup mode, allowing for
pre-setting the machine while processing the previous one
parts or a short stop.

Specifications

Overall dimensions of the machine
Length
Width
Height
Machine weight
Maximum planing width
Maximum thickness of processed material
Minimum thickness of processed material
Minimum length of processed material
Maximum thickness of the removed layer
Knife shaft speed
Knife shaft body diameter
Cutting diameter of knife shaft
Number of knives in the knife shaft
Cutting speed
Feed rate
mm
mm
mm
kg
mm.
mm
mm.
mm.
mm
rpm
mm.
mm.
PC.
m/s.
Email knife shaft drive motor type-4А100L2У3
Email knife shaft drive motor speed
Email feed drive motor type-4AX80A6-U3
Email feed drive motor speed
Total installed capacity
Belts estimated length
kW.
rpm
kW.
rpm
kW.
mm.
m/min.
900
930
1130
760
315
150
5
300
5
5640
100
103
2
30,4
8
24
5,5
2910
0,75
920
6,25
1900

General view of the machine

. Single-sided thickness planer CP3-6A: 1 - bed, 2 - handwheel
table settings, 3 - control panel, 4 - removable device, 5.7 -
clamps, 6 - knife shaft, 8, 16 - rollers, 9 - claw protection, 10 -
table fixing handle, 11 - electric motor, 12 - gearbox, 13 -
support rollers, 14 - table, 15 - knife shaft locking handle

Diagram of the relative arrangement of elements of a single-sided thickness planer

Diagram of the relative arrangement of elements of a one-sided thickness planer
machine: 1 - nail protection, 2, 6 - upper feed rollers, 3 -
chip breaker, 4 - knife shaft, 5 - clamp, 7 - lower feeders
rollers, 8 - table

Putting the machine into operation

After capital, and sometimes after secondary and current
During repairs, the machines are painted. Painting of machines is not
not only gives a beautiful look, but also protects surfaces
parts from corrosion. Giving the machines a beautiful appearance
appearance, coloring helps improve the maintenance and
operation of machines and ultimately increase
worker productivity.
The commissioning of the machine is documented in two documents:
test report and certificate of delivery of the machine to
operationWithin 48 hours of machine operation after delivery
(probationary period) he works under the supervision of employees
repair shop, and within this period the repair shop is obliged to eliminate
all defects that appear during operation of the machine. Time,
spent on eliminating defects is excluded from
probationary period.

Purpose of the machine

Single-sided thickness planer model CP3-6A
designed for flat one-sided planing
wooden parts and products to a given size according to
thickness. The machine can be used on all
woodworking enterprises.
Thicknessing machines are an integral part
carpentry and furniture machine park
productions, the machines can be used in various
stages of product processing depending on
production technologies. Achieve quality
smooth surface and required product thickness
- this is the main task of a thickness planer.

Machine lubrication chart

Name
lubricated parts
mechanism
1
Lubrication method
Left knife support Individual
shaft
oiler
2
Right knife support Individual
shaft
oiler
3
Cylindrical
table guide
Individual
oiler
4
Table lift screws
Thin layer of oil
5
6
7
Brand
lubricant
material on
GOST
1-13 fat
GOST 1631-61
Periodicity
lubricants
Oil quantity
Once
months
V
3
According to the oil indicator
Once every two
According to the oil indicator
weeks

6267-59
weeks
According to the oil indicator
Once every two
weeks
13
According to the oil indicator
Screws
adjustments Thin layer of oil
speeds
innings
variator
Tsiatim-201 GOST Once every two
6267-59
weeks
Gearbox
Turbino
GOST 32-53
22P One time
months
Turbino
GOST 32-53
22P Once every two
weeks
According to the oil indicator
Guides
variator
Grease reservoir
Thin layer of oil
According to the oil indicator
V
3
According to the oil indicator

Main malfunctions, their causes and solutions

Malfunction
Cause
Remedy
No submission
(slip)
material
Insufficient effort
workpiece clamping
Adjust pressure
pinch rollers
Non-straightness
b surfaces
cut through
Pressure rollers
not perpendicular
direction of movement
conveyor
Adjust position
axes of pressure rollers. At
concave cut front
move the ends of the axes apart, when
convexly bring together
The knife shaft is not
rotates at
pressing a button
"Start"
No submission
electricity.
Check feed
electricity
Doesn't hold up
given size
Incorrect
table setup
The tool has become dull
Set up table
Replace tool

Safety requirements

The design of the Machine ensures safety in accordance with GOST requirements
12.2.026.0-77, GOST 12.2.026.11-81.
The electrical equipment of the machine is made in accordance with GOST requirements
12.2.007.7-75, ensuring safe operation.
The machine has interlocks that prevent it from being turned on when
open doors, upper feed mechanism guards, guards
chain belt drive raised claw curtain.
The machine is equipped with a spindle braking device, ensuring it
braking and stopping within no more than 6 s from the moment of switching off
machine
The machine is equipped with a local lighting lamp.

Conclusion

Thicknesser machines are currently most often
used for planing workpieces to size
by thickness. And despite widespread use
for this purpose machining centers are not lost
their importance and are in demand among
woodworkers and furniture manufacturers, which
once again confirmed by the fact that they are still
are produced by many companies around the world.
The CP3-6A machine is still used in
enterprises
countries,
So
How
Fine
has proven itself to be simple and reliable in
operation, but its insufficient mechanization
limits application in precision processes
cutting

Information about the manufacturer of the thickness planer SR-6-9

Manufacturer of thicknessing woodworking machine SR 6-9 is the Stavropol Machine Tool Plant Red Metalist, - which since 1932 has specialized in the production of woodworking machines. The plant was founded in 1902 and is located in the city of Stavropol.

SR 6-9 Thicknessing machine, one-sided. Purpose, scope

Thicknessing machine CP 6-9 belongs to a new series of thicknessing machines produced by the Krasny Metalist plant in the mid-eighties, namely: SR3-6 (300 mm), SR6-9 (600 mm), SR8-1 (800 mm).

Thicknesser single-sided machine SR-6-9 designed for longitudinal, one-sided planing to a thickness of 5 to 200 mm of surfaces of flat workpieces up to 630 mm wide, made of coniferous and deciduous wood with a moisture content of no more than 15%. The SR-6-9 machine is a universal equipment and is used in serial and small-scale production of joinery products in the construction industry, furniture, shipbuilding, and carriage building.

Thicknessing machine SR-6-9 is used for flat planing (milling) of boards, beams or panels to size in thickness. It is used in enterprises and workshops for the production of joinery and construction products, laminated panels, furniture production, wooden housing construction and other woodworking industries.

Processing of workpieces is carried out by a 4-knife cylindrical shaft with wedge fastening of the knives in the shaft housing. A special clamp is installed in front of the knife shaft to support the wood fibers in the cutting area and eliminate chips on the surface being processed.

The table on which the workpieces are fed is of a cast rigid structure, equipped with support rollers to reduce friction when moving the material being processed.

The table is raised and lowered in height, depending on the thickness of the material being processed, mechanically using a separate electric motor or manually using a flywheel, followed by fixation to prevent spontaneous lowering of the table.

The bottom (base) surface of the workpiece must be processed on a jointer. The deviation of the base face of the workpiece should not exceed 0.15 mm over a length of 1000 mm.

The workpiece feed is mechanical. The feeder is driven by the engine through a gearbox.

The room where the machine is installed must meet the requirements of class P-IIa according to PUE-98.

Distinctive features of the thickness planer CP 6-9:

The machine has a cast frame, which significantly increases its rigidity;
The table is raised and lowered in height mechanically using a separate electric motor or manually, followed by fixation to prevent spontaneous lowering of the table;
The machine has three drive rollers, which significantly improves the traction capacity of the feed mechanism;
The table is equipped with support rollers, including rear drive ones, to increase the reliability of feeding when moving the workpiece;
The front feed roller is sectional, which allows simultaneous processing of several workpieces with a difference in thickness of up to 4 mm;
Processing of workpieces is carried out with a 4-knife cylindrical shaft with wedge fastening of the knives in the body;
The machine is equipped with an automatic cutting shaft brake for safe operation;
A special cast clamp is installed in front of the knife shaft to support wood fibers in the cutting area and eliminate chips on the surface being processed;
Claw protection on the loading side, preventing reverse ejection of the workpiece during processing;
Electrical locking, eliminating the possibility of turning on the machine when the fence is open.

SR-6-9 General view of the thickness planer

Photo of thickness planer CP 6-9

Kinematic diagram of thickness planer SR 6-9

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

Knife shaft rotation
Rotation of feed rollers
Mechanical and manual movement of the table up and down
Manual feed speed setting
Manual table clamp

The figure shows the kinematic diagram of a single-sided thickness planer CP 6-9. The knife shaft 35 is driven into rotation by the electric motor 1 through a V-belt transmission with pulleys 2 and 3. The shaft is braked by brake 36.

Feed mechanism- three-roller. The drive of the upper feed rollers 37 and 39 and the rear lower roller 42 is carried out from a two-speed electric motor 4, a coupling and a gearbox mounted on one plate. The gearbox contains two electromagnetic couplings 40 and 41, with the help of which gearbox stages with different gear ratios are activated.

When clutch 40 is turned on, rotation is supplied to the rollers through gears 5-7, 9-10, 11-12, 13-14, 15-16 and a chain drive with sprockets 17-21. When clutch 41 is engaged, rotation is transmitted through gears 6-8, and then along the same kinematic chain.

Setting the required feed speed is performed by two switches (for clutches and motor) according to the setting table, where the corresponding switch position is indicated for each speed. Four feed speed values in the range of 8... 24 m/min fully satisfy consumers, and simplification of the kinematic chain of the feed drive increases the reliability of the machine.

Machine table 38 has adjustable vertical movement along the guides. Rotation from the electric motor 34 through a belt drive 28-29, a worm gear 30, a chain drive 31-32, bevel gears 23-24 and 26-27 is supplied to two screw pairs 22 and 25. The table moves up and down only with continuous pressure on button. To prevent damage to the lifting mechanism, a safety clutch 33 is used. Manual movement of the table is carried out by a handwheel 43 through a gear clutch 44.

Fixing the table in a given position is done manually by turning the handle, which clamps the table guide through an eccentric and a rod.

Location of the components of the machine CP 6-9. Rice. 3

Location of machine controls CP 6-9. Rice. 4

Location of machine controls CP 6-9. Rice. 5

Location of machine controls CP 6-9. Rice. 6

Location of components of thickness planer SR 6-9

bed- SR6-9.10.000 - Fig. 3, pos. 1
Table- SR6-9.12.000 - Fig. 3, pos. 2
Feed roller (front)- SR6-9.22.000 - Fig. 4, pos. 21, Fig. 10
Clamps- SR6-9.24.000 - Fig. 4, pos. 20, Fig 9
Knife shaft- CP6-9.25.000 - Fig. 4, pos. 19, Fig. 8
Feed roller (rear)- SR6-9.28.000 - Fig. 4, pos. 22, Fig. eleven
Feed drive- SR6-9.30.000 - Fig. 3, pos. 3, Fig 12
Sound-absorbing curtain- SR6-9.78.000 - Fig. 13*
Electrical equipment- SR6-9.80.000 - Fig. 3, pos. 62

Location of controls for thickness planer SR 6-9

Load indicator
Light indicator indicating the presence of voltage
Knife shaft start button
Up button for table movement
Down button for table movement
Feed start button
Stop button general
Stop button general
Local lighting switch
Input switch
Handwheel for manual table movement
Feed speed adjustment handwheel
Mechanical table clamp handle
Handle for moving table rollers

General layout of the thickness planer SR-6-9. Description of the main assembly units

Machine bed SR-6-9. See fig. 3, 4, 5, 6

The bed 1 of the machine is a rigid solid-cast box. Inside the frame, in the central niche of the front part of the machine, a stepless drive of the feed rollers and table movement 2 is installed.

The feed speed is regulated using handwheel 16 located on the left side of the frame. In the left niche of the frame there is an electrical cabinet. In the right niche of the frame there is a chain drive 41 for the drive of the feed rollers and a V-belt drive 46 for the drive of the knife shaft.

Upper block of the machine

The upper part of the machine 4 (see Fig. 3) is made of a block design, which contains (see Fig. 4): claw protection 23, feed rollers - front 21 and rear 22, knife shaft 19, clamps 20, traverse 24 of the jointing device . The electrical equipment of the machine control panel is located in the left front niche of the block. In the left side niche of the block there is a brake device for the knife shaft, in the right niche there is a chain drive for the upper feed rollers and a V-belt drive for the drive of the knife shaft.

Table of thicknessing machine CP 6-9. Rice. 7

Table 1 is cast iron, rectangular in shape with guides 2 and 3. The table contains two smooth rollers 4 and 5. Roller 5 is driven. The rollers are mounted on swinging brackets 6. The height of the rollers relative to the working surface of the table is adjusted using an eccentric mechanism 7 and turning the handle 8.

The table is fixed in a given position using an eccentric clamp by turning handle 9.

Table movement mechanism

The mechanism for mechanical movement of the table consists of drive 3 (see Fig. 3), chain transmission 44 (Fig. 5), camshaft IX (see Fig. 2), bevel gears 23-24, 26-27 screw gears. - nut X-25, XI-28.

Manual movement of the table is carried out by handwheel 15 (see Fig. 3), through the cam clutch 60 (see Fig. 6), chain transmission 59. To turn on the clutch, you must press the handwheel in the axial direction.

Knife shaft of thickness planer SR-6-9. Rice. 8

The body of the cylindrical knife shaft 1 has four grooves placed parallel to the shaft axis, into which straight knives 7 are installed. The knives are fastened with wedges 6 and screws 5. The knives are aligned with screws 8 through nuts 9. The knife shaft body is mounted on ball bearings 2 placed in cylindrical supports 3 and 4. On the machine, the knife shaft is installed in the bores of block 4 (see Fig. 3). The rotation of the knife shaft is carried out from the electric motor 47 (see Fig. 5) by a V-belt transmission 46. The electric motor is mounted on a swinging plate 49.

Clamps of thickness planer CP 6-9. Rice. 9

Front clamp 1 serves to create support for wood fibers at the point where the knife exits the material and prevent pinching.

The front clamp is sectional. The front pressure jaw consists of narrow sections. The pressure of each section is carried out by spring 3. All sections are placed on axis 4.

The rear clamp is a solid beam. Front and rear clamps are mounted on cheeks 5 and 6 and have the ability to rotate on the flanges of the knife shaft relative to its axis.

Feeding mechanism of thickness planer SR-6-9

Front feed roller of thickness planer CP 6-9. Rice. 10

The feed mechanism of the machine is roller. The upper feed rollers are located in the machine block and consist of a front sectional 21 and a rear smooth roller 22 (see Fig. 4).

The lower rollers are smooth and installed in the table (see Fig. 7).

Sections 1 (Fig. 10) of the front feed roller are mounted on shaft 2. Shaft 2 rotates on ball bearings 3 installed in brackets 4 and 5. Bracket 4 swings on an intermediate bushing 6 installed in the machine block, bracket 5 - on bushing 7 mounted in the cheek 8. On the shaft 2 there are longitudinal slots - grooves in which the thrust strips of the sectional rings 1 are placed.

The claw guard 10 is installed on the axis 11. The claw guard is raised by turning the axis 11. The spring 12 returns the claw guard 10 to its working position.

Rear feed roller of thickness planer CP 6-9. Rice. eleven

The rear feed roller I (see Fig. 11) is made smooth and rotates on ball bearings 2 installed in brackets 3 and 4. Bracket 4 is rigidly connected to the axis 5, which at one end rests on the bushing 6 installed in the cheek 7, and at the other - in sleeve 8 installed in the machine block.

The upper feed rollers are pressed against the workpiece by rods 27 and 32 (see Fig. 4), the clamping force is regulated by screw 30 and nuts 33, compression springs 29 and 34.

The rotation of the feed rollers and the movement of the table up and down is carried out from the stepless feed drive 3 (see Fig. 3), through chain drives 41 and 44 (see Fig. 5).

Feed drive of thickness planer SR-6-10. Rice. 12

The continuously variable feed drive consists of an electric motor 1, a mechanical variator 2, a gearbox 3, mounted on one plate 23.

From electric motor 1 through clutch 24, cone disk 4, rotation is transmitted to shaft 5. Then, through gears 6, 7, 8, 9 and 12, rotation is transmitted to shaft 10 and from sprocket 13 to chain transmission 41. When electromagnetic clutches 14 or 18 are turned on, rotation from shaft 16 and sprocket 17 are transmitted to chain drive 44 - the table moves up or down. Changing the drive rotation speed (i.e., obtaining the required feed speed) is achieved by moving the conical disk 4 relative to the slip ring 20. The movement is carried out by the handwheel 16 (see Fig. 3).

Sound-absorbing curtain for thickness planer SR-6-9

To reduce the sound level, a sound-absorbing curtain and front and rear movable walls are installed in front and behind the machine.

The curtains are attached to the block with screws 1. Movable sectors are installed in the front curtain. The inner walls of the curtain are lined with sound-absorbing material. The rear curtain contains a curtain made of sound-absorbing material.

The front and rear movable walls are attached to the table with screws 2.

Machine accessories

The machine is supplied with:

Retainer

The device is designed to lock the knife shaft when changing knives (see Fig. 14). The device consists of a body 1, a screw 2, a rod 3, a spring 4. The knives are changed only when the knife shaft is fixed. To do this, the device is installed on the right cheek of the front clamp, and secured with screw 2. After securing the clamp on the cheek of the clamp, carefully turning the blade shaft, lower the stopper 4 of the clamp into one of the four grooves of the blade shaft. The knives are changed sequentially with the knife shaft fixed.

After changing knives, the lock must be removed from the machine.

Sharpening device

A sharpening device is used to sharpen knives mounted on the knife shaft of the machine. For all questions regarding its use and operation, please refer to the sharpener's operating instructions.

Jointer device

The jointing device is intended for finishing the blades of sharpening knives with a fine-grained abrasive in order to improve the quality of the cutting surface.

When the head of the vernier device 6 rotates clockwise or counterclockwise, the quill 2 with the grinding stone 5 moves relative to the body 1. The amount of movement is fixed by dividing the vernier device. The division value is 0.1 mm.

The control device is designed to set the cutting edges of knives relative to the axis of rotation of the knife shaft to a cutting diameter of 128 ± 0.05 mm.

The device consists of a body (1), a dial indicator (2) and a tip (3).

When installing the device on the knife shaft body, the tip comes into contact with the knife blade. The difference in indicator readings at the extreme points should not exceed 0.05 mm.

Electrical equipment of the single-sided thickness planer SR-6-9

Location of electrical equipment on the thickness planer SR 6-9 Fig. 16

Electrical equipment of the machine. General information

The electrical equipment of the single-sided thickness planer CP6-9 (Fig. 16) contains:

Ml- electric motor for driving the knife shaft;
M2- electric motor for driving the table feed and movement;
Em1- brake electromagnet of the knife shaft drive;
Em2, Em3- electromagnetic couplings for table movement;
Em4- brake electromagnetic clutch for table movement;
Control equipment, alarm- located in the control panel and electrical cabinet niche

The following voltage values are used on the machine:

power circuit 50 Hz, 380 V;
control circuit 50 Hz, 110 V;
signaling circuit 50 Hz, 24 V.
power supply circuit for electromagnetic couplings = 24 V.

Electrical circuit diagram of thickness planer SR 6-9 Fig. 17

Description of the operation of the electrical circuit

List of elements for the electrical circuit (see Table 6). Before turning on the machine, it is necessary to open the electrical cabinet door and check the condition of switch B2 and fuses Pr1...Pr3, and then close the electrical cabinet door.

Voltage is supplied to the power circuits and control circuits by turning on the input switch B1. At the same time, the milky-colored signal lamp L1 on the control panel should light up. The knife shaft drive is turned on using the Kn5 button. In this case, the magnetic starter P1 is turned on, closing its contacts in the power supply circuit of the electric motor of the knife shaft. The knife shaft drive is turned off using the Kn4 or Kn1 button.

The knife shaft drive cannot be turned on when the exhaust hopper is open or the side cover is open (right and left). The blocking is carried out by microswitches B4, B5, B6.

The feed drive is turned on by button Kn6 when the knife shaft drive is turned on. In this case, the magnetic starter P2 is turned on, closing its contacts in the power supply circuit of the electric motor M2. The feed drive cannot be turned on if the knife shaft drive is not turned on, due to the presence of the closing contacts of the P1 starter in the power circuit of the P2 starter coil.

The table is moved by turning on the Kn2 or Kn3 button in jog mode with the knife shaft drive turned off. When the knife shaft drive is turned on, the table movement drive will not turn on, since its circuit contains a break contact of the magnetic starter P1.

The Kn2 button turns on relay P3, which closes its contact in the power circuit of the electromagnetic clutch Em2 and turns on the upward movement of the table.

Button Kn3 turns on relay P4, which closes its contact in the power circuit of the electromagnetic clutch Em3 and turns on the drive to move the table down.

To fix the table in a given position, an Em4 brake clutch is used.

Switch B3 is used to turn on the local lighting lamp L2.

The Kn4 button, located on the control panel, and the Kn1 button, located on the machine frame, serve for emergency shutdown of the machine.

Protection of electrical equipment from short circuit currents and overloads is carried out by the input switch B1, switch B2 and fuses Pr1...PrZ.

Zero protection is provided by magnetic starters.

Preparation of the electrical equipment of the machine for initial start-up and initial start-up.

When initially starting up the machine, it is necessary first of all to check the reliability of grounding and the quality of installation of electrical equipment by external inspection. After inspection in the electrical cabinet at the terminal blocks, disconnect the power wires of the motors Ml and M2. Turn on the input switch B1. Using the buttons located on the control panel, check the precise operation of the starters. Then restore the circuit to its original position and check the correct direction of rotation of the electric motors.

SR-6-9 Thicknessing woodworking machine. Video

Technical characteristics of thickness planer SR-6-9

Parameter name	SR-6-9	SR-6-10	SR-8-2
Main settings
Maximum planing width, mm	630	630	800
Thickness range of processed workpieces, mm	5..200	5..250	5..250
Mechanical feed speed of workpiece, m/min	8-24	8; 16	8; 16
Minimum length of workpiece processed, mm	400	450	450
Maximum thickness of layer removed in one pass, mm	5	8	8
Planer shaft rotation speed (idling), rpm.	4570	4570	4570
Number of planing knives on the planing shaft	4	4	4
Planing shaft diameter, mm	125	128	128
Knife size: Length, width, thickness, mm
Thicknessing table length, mm
Nominal diameter of the exhaust funnel connecting pipe, mm			180
Maximum difference in thickness of simultaneously supplied material, mm		4	4
Electrical equipment of the machine
Type of supply current	380V 50Hz	380V 50Hz	380V 50Hz
Number of electric motors on the machine, pcs.	1	3	3
Knife shaft drive electric motor, kW	7,5	5,5	11,0
Feed drive electric motor, kW	1,1	1/ 1,7	1/ 1,7

A used industrial surface planer, model CP3-5, is one of the best representatives of the legendary Stavropol plant “Krasny Metallist”. We can also say that the Soviet T-34 tank was recognized as the best tank of the Second World War, and the CP3-5 surface planer became the best small surface thicknesser of the 70-80s of the last century. The thicknesser has a rigid cast frame. Despite its small size, the machine has a very decent weight of 600 kg. Such a large mass (it is solid cast) ensures good vibration damping and, as a result, high purity of material processing. A two-knife (sometimes four-knife) shaft has high maintainability; replacement of bearings can be carried out by personnel with not very high qualifications without special tools. The powerful electric motor has twice the power reserve compared to its modern counterparts. The feed mechanism is very rationally implemented. Electric motor with disc variator plus gearbox. This design has worked flawlessly for decades. Some copies worked without repair of this unit for 36 years. Repair usually involves replacing worn Ferodo linings from any suitable clutch disc. The gearbox used in this design has a large service life and, with minor changes, was transferred to the older model of the CP6-9 thickness planer. The entire assembly (electric motor-variator-gearbox) is used in the CP6-9 thickness planer, which operates under heavy loads. The chain drive drives the front grooved and rear smooth drum. The variator allows you to smoothly change the workpiece feed speed from 8 to 24 m/min. The table is cast iron, box-shaped. The lifting is controlled by a manual control mechanism. The table lifting mechanism is not the best solution for this machine. When worn, the worm pair placed inside the table tends to jam the movement of the line. There are two smooth rollers installed on the table. To adjust the output of the rollers to the hardness of the material being processed (hardwood or softwood), they are adjustable. Adjusting the output of the rollers above the table is done very simply and reliably. By the way, on most modern imported surface planers, the presence of rollers on the table is not included in the basic delivery, but is an option and, accordingly, is paid additionally. The claw protection is cast and made of cast iron. To prevent chipping of the wood, there is a heavy, molded front clamp where the knife exits. The electrical circuit is simple and reliable. Today, these machines are no longer in production, so we can offer you a used surface planer CP3-5 after repair. The cost of a used surface planer CP3-5 is about 50% of the cost of a modern analogue.