Tenoning machine for box tenon. How to make a machine for cutting thorns in a tree. Homemade tenoning machine

In the process of manufacturing furniture and joinery, the constituent parts are often interconnected “on a spike”. There are several types of spike connections: dovetail, box, round and oval, allowing you to mount parts at the required angle or extend them. A tenon is a rather complex element in execution, for which special equipment has been created - a tenon cutting machine.

Types of tenoning machines

A tenoning machine for wood is used to form spikes and lugs on the details of frames and boxes for connecting them at an angle, as well as to form a mini-tenon necessary for the procedure for splicing blanks together. Such machines are quite common in furniture enterprises.

Two types of tenoning machines have been developed:

frame tenoning machines
box tenoning machines.

They differ in the type of spike obtained.

According to the method of processing parts, tenoning woodworking machines are divided into:

unilateral
bilateral.

They will help form a straight spike, a rounded spike, or a dovetail spike.

One-sided tenoning devices are positional type machines. Their design assumes the presence of a desktop that reciprocates. The workpiece is attached to this table. After the completion of the first complex of operations with the workpiece, it is returned by means of the carriage. And all the work done is repeated again, only now on the other side of the workpiece.

Double-sided tenoning devices are position-through type machines. In such machines, workpieces are fed without interruption using a chain conveyor and clamping mechanism. In this case, processing is carried out on both sides at the same time. The design of these devices has two identical columns, one of which moves along the guides, with its help the machine is adjusted to a certain length of the part.

Milling cutters act as a cutting mechanism on tenoning machines, and in order to create a dovetail tenon, end mills of a conical shape are used. The machine mills spikes and grooves for them (lugs) in the constituent parts of wooden structures.

Dovetail and box straight spikes are formed on special types of machines that are produced for professional use in large enterprises. The received fastenings differ in high reliability and guarantee long operation of products.

Spikes of round and oval shape are formed on devices with CNC and operating in automatic mode. CNC machines are able to work with workpieces in any plane.

The most popular are tenoning machines for frame, door and window structures.

Main parameters

The main characteristics of tenoning machines include:

maximum workpiece diameter
largest spike width
largest thorn diameter
kind of thorn
spindle speed
engine power level
dimensions and weight.

The main requirement for a tenoning machine is high precision of operations. Otherwise, the parts will not match each other and the connection will not work.

Tenoning machines are used:

processing of calibrated boards, chipboard
trimming the perimeter of door panels, window frames
floorboard processing
creation of parquet.

Some features of use:

on large production conveyors, such machines are mounted on the ceiling. As an additional complete set there are clamping devices, scoring saws accept workpieces. The workpiece falls on the miter saws, and therefore the processing takes place with two milling calipers.
workpiece feed speed can be smoothly adjusted using a variator
for high-quality processing, the spindle speed should be 7000 rpm
the length of the guide can be 2, 2.5 or 3 meters
the design makes it possible to use several different tools for woodworking
the equipment can be additionally equipped with a clamping pneumatic mechanism and an extension of the working surface.

Box tenoning machines

Straight box tenons are created using both one-sided and tenoning machines.

The spindle in such devices is in a horizontal position, and the box boards are stacked on the desktop and fed in a vertical plane in the direction tangent to the circumference of the cutting system of such machines.

The device incorporates a frame, in the upper part of which there are bearings. A spindle is mounted in them, which is connected through a pulley and a belt drive with an electric motor. One of the three bearings in which the spindle is mounted must be removed during the installation of the cutting tool. On the machine frame there are elements of the table feed hydraulic drive. The table is distinguished by a movable mounting on skids in the guides of the device. The control panel contains the starting equipment of the electric motor (push-button station and magnetic starter). The movement of the table vertically occurs due to the hydraulic feed mechanism.

The task of double-sided box tenoning machines is to create straight box tenons simultaneously at both ends of the part.

The advantages of such devices:

ease of operation and adjustment, as well as automatic tool feed. All this guarantees the maximum level of machine productivity.
the device is capable of processing both parts of the dovetail connection separately or simultaneously
fixation of the workpiece is carried out manually using pneumatic clamps
all settings are controlled from the control panel
thanks to the CNC, you can change the stud pitch, the number of grooves, the stud depth, the dimensions of the workpiece, the feed rate.

Also, the equipment can be additionally equipped with a special shelf for laying blanks. This is very helpful in the process of milling dovetail studs on curved and shaped drawers.

In the work on the creation of wooden windows and doors, the milling and tenoning machine is very popular. In this section, we will tell you how to make a tenoning machine yourself.

At the end of self-assembly, you will receive a device that will not need to be reconfigured, because it will be created specifically for working with tenon cutting. Before proceeding with the assembly, you need to buy two spindles. The carriage design scheme can be easily found on the Internet. If it does not suit you, you can always make your own additions.

Often, in the general design of a tenoning machine, craftsmen change the length of the guide rail upwards. And that means the load is growing. For this reason, you can refuse to use a square pipe. It can be replaced with an I-beam, to the shelves of which you need to weld the corners.

Experienced craftsmen do not recommend using a standard carriage. The bottom bracket should have two 6.3 cm steel angles, eight 301 brand bearings, as well as automotive bolts (L50) and washers for them. From an I-beam, it is worth cutting out fasteners in the shape of the letter “T”, and fasten a table with a guide and a clamp to them.

We emphasize that the clamp must be factory-made and you need to buy it in a specialized store. The presence of a table is necessary in order to obtain additional rigidity. The corners must be tied diagonally. At the same time, the carriage, although it turns out to be quite rigid, moves easily and smoothly. It can also be mounted on other types of devices.

Previously acquired spindles are fixed to a beam 1.8 meters long. The height of the cutters is selected using bushings, washers and a slotting machine. Be sure to note that this work must be carried out with the hood turned on if you are working in a closed room. After all, in the process of work, a large amount of dust is generated. In addition, the cutters must be closed with a barrier, which can be created from three boards.

A homemade machine, of course, will turn out to be quite dusty and noisy, but it will save your time and money.

Comparative characteristics of tenoning machines

Name	Parameter value

		ShD10-8	ShD16-8
The greatest length of a spike, mm
The greatest depth of eyes, mm
The smallest thickness, eye width, mm
The smallest distance between shoulders, mm
The largest dimensions of the processed workpiece, mm
Feed rate maximum, m/min smallest, m/min
Saw diameter, mm
Saw rotation frequency, rpm
Electrode power, kW
Cutting speed, m/s when sawing when milling
Joint cutters diameter, mm rpm
Hole cutters diameter, mm electric motor power, kW speed, rpm rotation angle, deg
Feed drive
Rotation frequency, rpm
Drive of movement of a mobile rack
Rotation frequency, rpm
Electric motor power, kW
Total machine power, kW
Height of the working surface of the conveyor, mm
Specific energy intensity
Specific metal content
Name	Parameter value
	Designed machine tool KP13-97	Machine of a similar design
	Designed machine tool KP13-97	ShD10-8	ShD16-8
Dimensions of the machine (for the projected tentatively), mm

Quite a lot has already been written about such tenon cutters, so I do not pretend to originality. But the thing in the workshop is definitely useful. Therefore, having assembled a tenon cutter for a straight box tenon, I decided to talk about it in my blog.

Such tenon cutters are usually made on the basis of a milling table or a circular saw. But, of course, options are also possible - depending on the invention of the master - on a band saw, a jigsaw machine, or even on a chainsaw!
I did not become original and made a device for cutting a straight box tenon for my router table (more about it here:).
Sometimes they use bearings and different guides to facilitate sliding, but I decided to do without them. The only condition is that the opposite edges of the table must be parallel. To do this, you can walk on them with a router with an emphasis on the other edge.

The first step is to cut out the base of the future tenon cutter from plywood. The dimensions of this base depend on the table itself - it must be wider than the table by the width of the side stops. I took stops of about 4 cm. The length of the stops should be the same or slightly less than the width of the table - then they will not wedge. I glued all the details of the tenon cutter with carpentry glue and fixed it with self-tapping screws - perhaps redundantly, but I wanted to.

All screw heads are recessed.

To select the correct position of the second stop, we put the workpiece with the first stop installed on the table, resting it (the first stop) against the edge of the table, apply glue to the second stop ...

And having laid a sheet of paper between the second stop and the edge, we fix it (the second stop) in this position with clamps. The gap left by the paper will be ideal for the tenon cutter to move freely along the edges of the table without dangling.

For purely aesthetic reasons, we cut the edge so that the stops are flush with the main part.

The carriage for our tenon cutter is ready

Next, a stop will be installed on this carriage, which can be adjusted and which must always be perpendicular to the direction of movement of the carriage. In order not to check this perpendicularity every time, I made a ledge with the right angles on the edge of the carriage.

On the same ledge, using the M8 bolt, I installed the handle from the adjusting mechanism of the office chair.

The handle is located exactly in the middle between the stops - this is another degree of protection against carriage jamming. The handle is quite grippy and secure. It also sets a safe position for the right hand. It is convenient to use it.

The stop is fixed with two M10 bolts with recessed heads and wing nuts. The stop can move along the ledge with the handle in both directions.

It is important that the plane of the stop is perpendicular to the plane of the carriage.

The carriage is made of 18 mm FSF plywood. I'm sure many are now choking - where such a thickness, it's some kind of monster! Well, yes, it could be made thinner, but I like things with excess strength where possible. Here is my feature.
Therefore, the cutter had to buy a special one. All characteristics and articles are visible in the photo.

We insert the pin into the resulting groove. I made it from textolite 6 mm thick.

The device is ready. The design is quite simple, it took longer to tell than to do))

The first run showed that in general the device works, but requires configuration

Careful adjustment requires the height of the cutter and the width of the tenon. After a while it started working.

It is more convenient to process parts in packages - at least two. At the same time, the outer parts have a hard time - a straight cutter mercilessly pulls out of them not just individual fibers, but entire layers. Therefore, the details must be processed, wrapping them on both sides with unnecessary bars.

See what happened to the parts that were external in the package. I don’t know how in magazines and videos they manage to process the details one by one. You can use spiral cutters - maybe this will solve the problem, but they are usually several times more expensive than straight ones.

Therefore, we simply wrap the workpieces on both sides and get an excellent result. Here it is also necessary not to lose sight of which side and in what sequence to process the parts so that they then form into a product.

In general, the result is not bad. These were test bars, but since it turned out well, I decided to finish the job and make a box.

Cut out the bottom of the box on a circular saw

And then another nuance came out - for grinding protruding spikes, a device for cutting a straight box spike should be equipped with a belt grinder or a disc grinder or something like that. An eccentric sander does not cope, filling up the edges. Otherwise, I'm happy with the purchase - it works as it should.

The price of a tenoning machine for wood depends on a number of factors and can range from 100 thousand rubles or more. But the price is far from the only criterion that should be relied upon when choosing tenoning equipment.

The tenoning machine for wood is an indispensable device in carpentry and furniture industries. Many parts are interconnected with a spike.

There are several main types of spiked connection:

Box;
round;
oval;
Dovetail.

Spikes help to connect parts together or lengthen workpieces.

A spike is a connecting element that is complex in its configuration, for the manufacture of which you need to use the appropriate equipment with your own hands.

The equipment differs precisely in the type of spikes that they are able to produce.

Spikes for windows, doors and frame structures. Such tenoning machines can be single-sided, double-sided, through or return. The working tools of these tenoners are special saws, vertical and horizontal cutters. With their help, the milling of a straight spike or eyelet is carried out, which is necessary for a frame and frame wooden structure;
Box tenons and dovetails require the use of a different type of tenoning machine. They are used for serial production of carpentry items or furniture. Due to this connection, a reliable and durable fixation of the components is ensured;
Oval and round dowels are the most complex dowels made on specialized automatic machines. Do-it-yourself operator participation is minimized, since such spikes are subject to increased requirements in terms of accuracy. Therefore, oval and round spikes are made using automated CNC tenoning machines.

The most important requirement for a tenoning machine is the accuracy of processing. If this is not done, then the parts simply will not fit together. Therefore, it will be impossible to connect.

Scope of application

Using do-it-yourself tenoning machines, in addition to carpentry and furniture production, they can:

Process calibrated wooden boards and particle boards;
Overtake the perimeters of door parts and window frames;
Process floor boards;
Making parquet.

A separate category of tenoning machines is equipment designed for splicing wooden parts. Such machines are used at production bases, where it is necessary to connect the boards along the length by splicing them together. To do this, the machine cuts out special toothed spikes on the ends of the workpieces, processed with glue and pressed with a special press. All wood splicing lines operate in automatic mode. The participation of the operator with his own hands consists in controlling the operation of the tenoning and pressing equipment.

Characteristics of tenoners

When choosing tenoning machines for do-it-yourself work on connecting wooden elements, you should pay attention to the most significant parameters of tenoning equipment.

The maximum diameter of workpieces that the machine can process.
The maximum width of the spike created on the equipment.
Largest tenon diameter available on the selected tenoning machine.
The type of stud that the machine is designed to manufacture.
Spindle speed. The speed and quality of workpiece processing depends on it.
The power of the electric motor installed on the tenoning machine and the type of electrical network to power it. Some machines can be powered by a single-phase 220V household mains. But industrial tenoners require a high quality 380V three-phase line.
Equipment dimensions and weight. Heavy weight protects against vibrations, which can adversely affect the accuracy of cut spikes. At the same time, large dimensions and weight limit the machine in terms of its movement. Although it is unlikely that you will need to rearrange the tenon cutter from place to place every day. Therefore, the emphasis should be on minimal vibration during the operation of tenoning equipment.

How does he work

To work with do-it-yourself tenon-cutting equipment, you need to find out on what principle such machines operate for the manufacture of connecting tenons.

The whole process can be divided into several steps, each of which directly affects the final quality of the output.

The workpiece is sent to the working table of the machine, where the wooden part is cut to the required size;
After that, wood or wood-based material goes to create spikes and eyes;
The bed is a rigid cast structure, equipped with clamping mechanisms for fixing. The bed is equipped with a column where the working head is located. Eye boards, milling cutters or saws corresponding to the tasks are put on the head;
To protect the workpiece from splitting during the tenoning process, a special automatic system applies glue to the surface of the workpieces. This prevents the appearance of chips and defects;
In addition, tenoning machines can be equipped with trimming mechanisms. They are necessary in order to align the ends of the workpieces being processed;
At the output, we get a part with lugs or spikes of the required configuration made on it.

Pay attention to the purpose for which you are purchasing a tenoning machine. For certain situations, certain solutions are suitable.

For small-scale production at home or a small workshop, milling machines equipped with tenoning carriages are the best choice. You get a full-fledged milling machine and a tenon cutter function with it. This eliminates the need to purchase a separate tenoning device. At the same time, the milling cutter with tenoning carriages demonstrates good parameters in small-scale production.
Large-scale furniture production, where it is important to obtain a large series of studs, choose automated stud-cutting complexes with a CNC module. The CNC module allows you to create all kinds of variations of tenon joints on a tenoning machine. Such equipment is easy to set up and it does not take much time to learn how to work with it.

Exploitation

There are several features of the operation of tenoners that you will find useful and just interesting to know about.

Large conveyor productions provide for the installation of tenoning equipment by fixing it to the ceiling. Additionally, the devices are equipped with clamping units, and the workpieces are received with scoring saws. The workpiece is fed to the trimming, and the milling caliper completes the processing. Or rather, a couple of them;
To control the feed rate of the part, a variator is used. It allows you to smoothly control the parameters;
To ensure high-quality studding, the speed of rotation of the spindle head should be 7000 rpm;
There are several options for tenoning devices on the market, which differ in the size of the guides - 2, 2.5 and 3 m;
The design of the tenon cutter allows the use of several different working tools for woodworking;
Tenoning units can be additionally equipped with desktop extensions and pneumatic clamping devices.

The range of units for creating spikes allows you to equip your enterprise with the best equipment option. But if this is a small workshop, it makes sense to think about a milling machine with a dowel carriage.

One of the indispensable conditions for successful furniture and joinery production is the use of tenoning machines of various types, which cut and process the tenon for a strong connection of various elements of frame structures. In the production of furniture blocks, as well as various three-dimensional structures, machines for box spikes are used, which are of two types - straight and trapezoidal, called "dovetail".

Machines for the manufacture of box spikes

The connection of the boxes on the "dovetail" ensures the reliability of fastening parts and the durability of the product during its operation. The strength of these knots is ensured by the complexity of the connection and the peculiarity of the work of wood. Box stud machines mill up to four types of studs into shapes and arrange them in adjustable pitch. The machine tool can process both parts of the dovetail connection separately or simultaneously, depending on the program set by the operator. Almost all models of machines are made with control and adjustment in a simple and convenient form. The length of the processed workpiece ranges from 200 mm to 1500 mm, and the width is set from 60 mm to 770 mm on machines of various models. Some models of machines for box spikes have the ability to select grooves for hinges and fittings of door facades, which is especially convenient in furniture production.

Box tenoning machines

To Category:

Woodworking machinery

Box tenoning machines

Machine construction. Tenoning machines for box dowels are of two types: for producing straight or wedge dowels (ShPK -40) and trapezoidal dovetail dovetails (SHLH -3, ShLH -4) at the ends of blanks.

The single-sided tenoning machine for the production of straight and wedge tenons ShPK-40 is designed for processing tenons at one end of the workpiece and can be used in carpentry, construction, furniture and other woodworking industries. The machine allows processing workpieces up to 400 mm wide when forming straight box dowels and up to 110 mm wide when making wedge dowels. It is possible to process simultaneously several workpieces (package) with a total thickness of not more than 100 mm. The length of the blanks must be at least 250 mm. The greatest length of the developed straight spikes is 50 mm, wedge - 10 mm.

A horizontal milling shaft, a lifting table and a hydraulic unit are mounted on a box-shaped frame.

The milling shaft is made in the form of a spindle with replaceable sets of cutters mounted on it. The spindle is mounted on two supports. The right support is provided by two angular contact bearings. The left removable bearing is a radial spherical ball bearing with a hub that includes the end of the spindle. The detachable support arm can be tilted 90°, freeing up an area for tool change at the end.

The spindle is driven by an electric motor, which is mounted on a turntable so that the tension of the toothed transmission belt can be adjusted. Table 5 moves along the frame guides in the vertical direction by a hydraulic cylinder.

The workpiece is installed on the table and based on the lateral left or right guide ruler and the front end stop. The side rails are adjustable and allow you to customize the size of the outer eyelet.

The end stop can be adjusted in the range of 0…50 mm to provide the required tenon length. Fix the workpiece on the table with hydraulic clamps. A casing is installed in the upper part of the machine for removing chips, which is connected to the exhauster network. On the left side of the frame there is a hydraulic panel, on which hydraulic distributors, a safety valve and a throttle 3 are mounted to change the speed of the table.

The hydraulic drive of the machine provides reciprocating movement of the table through the cycle: clamping the workpiece, working stroke of the table with clamped workpieces down at a given feed rate, idling of the table with clamped workpieces up at an increased constant speed, unfastening the workpiece.

The hydrokinematic scheme of the machine is shown in fig. 114. With the electric motor of the hydraulic unit turned on, the oil from the vane pump NP through the strainer F and the distributors P1 and P2 enters the hydraulic tank B of the machine.

In the initial (upper) position, the table is held by oil pressure on the piston of the C1 cylinder. The oil outlet from the hydraulic cylinders C1 and C2 is locked in the middle position of the hydraulic distributors P1 and P2. With the simultaneous activation of the electromagnets and the distributors Pi and P2, the table and clamps occupy their original upper position.

Rice. 1. Tenoning machine for box straight dowels 111PK-40: 1 - bed, 2 - hydraulic unit, 3 - throttle, 4 - milling shaft, 5 - table, 6 - guide ruler, 7 - end stop, 8 - hydraulic clamp, 9 - workpiece , 10 - electric motor, 11 - hydraulic cylinder

The working stroke of the table is carried out by turning on the electromagnet b of the distributor P2. In this case, the electromagnets and distributors P1 and P2 are turned off - the workpieces are pressed. The pressure in the system rises, the pressure switch RD is activated and the solenoid b of the distributor P1 is turned on - the table is working.

At the end of the working stroke, the table presses the pin of the limit switch, which turns off the electromagnet b of the P1 distributor and simultaneously turns on the electromagnet a of the same distributor. The table begins to move up when the electromagnet b of the distributor P2 is turned on.

When the upper position of the table is reached, the limit switch is activated, which turns off the solenoid b of the hydraulic distributor P2 and turns on the electromagnet a of the hydraulic distributor P2. There is a departure of the clamps, and the workpiece is released. The table is fixed in the upper position, since the oil in the C1 cylinder is locked by the middle position of the P1 hydraulic distributor spool.

In the event of an emergency power outage, the table and clamps are fixed (the table stops, the workpiece is pressed), since the hydraulic valves P1 and P2 are automatically set to the middle position. To remove the workpiece from the cutting zone and detach it, it is necessary to raise the table to its original position by turning on the electromagnet a of the P1 hydraulic distributor and the electromagnet b of the P2 hydraulic distributor.

The cycle is switched on by pressing the "Cycle" button located on the control panel. In the "Setup" mode, you can move the table up and down with a stop in these positions.

The pressure in the system is regulated by the KP safety valve and controlled by the MN pressure gauge. The speed of the working stroke of the table is regulated by the throttle of the flow regulator RP.

Selecting the operating mode. The feed rate in the machine is assigned depending on the type of wood, the width of the workpiece and the length of the tenon. In table. 6 shows the cutting conditions when processing straight box spikes 8 mm wide at a wood moisture content of 10%.

When assigning modes, a short-term overload of the milling shaft electric motor is allowed no more than 25%. When processing wedge spikes of hardwood parts, the feed rate should be no more than 4.5 m / min.

Rice. Fig. 2. Hydrokinematic diagram of a tenoning machine for box straight tenons: a, b - electromagnets, B - tank, NP - vane pump, F - filter, KP - safety valve, MN - pressure gauge, RP - flow regulator, PI, P2 - distributors, RD - pressure switch, Ts1, Ts2 - hydraulic cylinders, XX - idling, PX - working stroke

Setting up machines. For processing straight box spikes, a set of 25 cutters is used. The set, fixed on the milling shaft, must have cutters of the same diameter, width B, equal to the width of the eye being produced. The deviation of the width of the fr-ez is allowed no more than 0.03 mm.

When processing wedge spikes, a set of two milling cutters with wedge teeth is used. The cutter teeth must have the same height and identical shape. It is not allowed to install cutters with chipped or blunt teeth on the spindle. The cutters on the quills must be securely fastened with nuts.

Before changing the cutting tool, you must set the switch on the control panel to the “Setup” position. This eliminates the possibility of turning on the milling shaft drive motor.

To replace the tool, unscrew the special nut of the support bracket, move it along the spindle and turn it 90°, providing free access to the tool from the end of the spindle. The new tool is installed in the following order. The side hinged bolts connecting the clamp to the table are moved to the upper position and securely fastened to the upper casing. By pressing the “Start table down” button, the table is set to its lowest position, after which the casing with clamps is tilted 90 °, providing free access to the tool. Holding the spindle with a wrench, unscrew the left nut securing the set of cutters.

A set of cutters for a straight box tenon consists of two quills connected to each other by a gear coupling. First, the left quill with 12 cutters is removed, and then the right one with 13 cutters.

When changing tools, the safety rules must be observed. A set of cutters is removed and placed in a special box for its subsequent transportation to the grinding department of the workshop.

Both cutters for processing wedge spikes are installed in extreme positions relative to the spindle and side guide rulers through spacer rings and a bushing. After installing the tool, fix the folding bracket with a special nut. The bracket is equipped with a lock that prevents the drive motor from being turned on, so you should pay attention to the correct interaction of the bracket with the blocking microswitch.

The table is returned to its original upper position by pressing the "Start table up" button. Then set the clamp to the working position. The side guides of the ruler are adjusted depending on the width of the outer eye. The left and right rulers are adjusted so that two paired workpieces with straight spikes can be processed simultaneously. The adjustment of each ruler to the required size from the extreme spike is carried out by the corresponding screw.

The end stop to the required tenon length is adjusted by turning the screw, followed by fixing it with a lock nut.

Hydraulic clamps are fixed on the table with two racks and hinged screws.

The value of the table stroke is determined by the position of the microswitches installed on the frame. To check the correctness of their work, the machine is switched to the “Setting” mode by the mode switch and the movement of the table up and down is practiced.

Rotate the throttle knob to set the desired speed of the stroke. Before starting the machine, an exhauster system for removing chips is turned on.

To improve the quality of milling spikes and prevent chipping when the cutters come out of the wood, an additional support is used - a backing bar or a shield on which the workpiece is installed. During the first pass, spikes are formed at the end of the backing board. The end of the backing board, which constantly interacts with the cutters, wears out quickly, so it should be periodically rearranged or replaced with a new one.

Work on machines. Starting the machine in an automatic cycle is carried out by alternately pressing the buttons for turning on the milling shaft electric motor and the hydraulic pump. The machine is operated by one worker. He takes a pack of boards, puts it on the table and aligns it, pressing it against the guide ruler and the front end stop. After pressing the “Cycle” button, the boards are pressed against the table by an automatically operating clamp, and the table makes a working and reverse move. In the original position of the part. are detached and the machinist, turning them 180°, again bases them in the dowel machine at the other end with the same machine setting. After the second pass, the finished parts are stacked.

Having finished processing a batch of parts, the machine operator proceeds to studding the mating boards, having previously moved the side guide ruler to the thickness of the spike or using the second guide ruler for this.

To avoid marriage, the boards entering the machine should not have wingedness, curvature, non-perpendicularity of the ends to the edges and face. During processing, the quality of the resulting studs is controlled with a tool or visually by trial assembly of the stud joint of paired parts.

The thickness of the stud and the width of the lug are measured with a caliper or other measuring instrument at points located at a distance of 1/4 of the stud length from the bottom of the lug and the end face of the stud. Check all the spikes and lugs of this part.