Mechanical tenoner

Abstract

The present application relates to the mechanical technical field, more particularly, to a kind of mechanical tenon machine.It includes rack, main tool shaft, linear adjustment mechanism for driving the main tool shaft to realize transverse linear motion, circular arc adjustment mechanism for driving the main tool shaft to realize circular arc motion, table surface adjustment mechanism for fixing the workpiece to be processed and adjusting the distance and angle of the workpiece to be processed relative to main tool shaft, drive motor.In the present application, the shape of waist circle straight-line tenon is disassembled into two straight lines and two semicircle trajectory combinations, and the trajectory of tool feeding is added, then sequentially combined to form a tool path required for processing waist circle straight-line tenon, and finally realize the processing of waist circle straight-line tenon by mechanical driving.The present application adopts mechanical driving, and the cost is lower relative to numerical control;Through the mutual cooperation between linear adjustment mechanism, circular arc adjustment mechanism and table surface adjustment mechanism, waist circle tenon of any size and angle can be processed.

Description

Technical Field

[0001] This invention relates to the field of mechanical technology, and more specifically, to a mechanical tenoning machine. Background Technology

[0002] Mortise and tenon joints are commonly used in solid wood furniture, with the straight tenon being a relatively common type of simple mortise and tenon structure. Common equipment for processing straight tenons includes CNC tenoning machines, oscillating tenoning machines, and square hole drills. Square hole drills are less commonly used due to their manual operation, high labor intensity, and low efficiency. CNC tenoning machines and oscillating tenoning machines are more efficient. Both automatically move the center of the tenoning machine back and forth along a straight line according to the required length, gradually processing the straight tenon from shallow to deep. The resulting tenon is an elongated shape with rounded ends, also known as an oval shape. However, because CNC tenoning machines are expensive, oscillating tenoning machines are more economical. Therefore, many manufacturers requiring simple straight tenons choose oscillating tenoning machines, which also produce oval-shaped tenons.

[0003] Commonly used equipment for automated processing of straight tenons includes CNC tenoning machines, five-disc saws, and milling machines. Five-disc saws and milling machines work by cutting wood along a straight line, removing wood in a fixed shape at the perpendicular section of the line to create a straight tenon. The resulting tenon is rectangular. When fitted with a dovetail mortise, there is a semi-cylindrical cavity at both ends. This affects both the sturdiness and aesthetics during assembly. The two semi-cylindrical cavities need to be filled with glue during production to improve sturdiness, significantly increasing glue consumption, which is both environmentally unfriendly and economical. This has led manufacturers to choose CNC tenoning machines to process dovetail tenons. While CNC tenoning machines can process dovetail tenons, their large size and high cost mean that only a small portion of their capabilities are utilized for processing dovetail tenons. This is both uneconomical and wasteful. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a mechanical tenoning machine that can not only process oval tenons, but is also more economical than CNC tenoning machines.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] A mechanical tenoning machine, including

[0007] A frame, on which transverse linear guide rails are provided;

[0008] The main spindle mechanism includes a vertical linear guide rail and a main cutter spindle; the vertical linear guide rail is slidably connected to a horizontal linear guide rail and can move back and forth along the horizontal linear guide rail; the main cutter spindle is slidably connected to the vertical linear guide rail and can move up and down along the vertical moving guide rail.

[0009] A linear adjustment mechanism is used to drive the main cutter shaft to achieve transverse linear motion. The linear adjustment mechanism is mounted on the frame, and the movable end of the linear adjustment mechanism is slidably connected to the transverse linear guide rail.

[0010] An arc adjustment mechanism is used to drive the main cutter shaft to achieve arc motion and is connected to the movable end of the linear adjustment mechanism.

[0011] A table adjustment mechanism, installed on the frame, is used to fix the workpiece to be processed. The distance and angle of the workpiece to be processed relative to the main cutter spindle can be adjusted through the table adjustment mechanism.

[0012] A drive motor is connected to both the linear adjustment mechanism and the circular adjustment mechanism to drive their movement.

[0013] Based on the above-mentioned technical means, this invention provides a mechanically driven solution that allows the cutting tool to run along a designed path to process an oval tenon. In this invention, the oval tenon shape is decomposed into a combination of two straight lines and two semicircles, and the feed and retraction paths are added. These are then combined sequentially to form a toolpath required for processing the oval tenon. Through mechanical drive, the oval tenon is finally processed. First, the straight line adjustment mechanism is activated, driving the main cutting axis to cut along a straight line, cutting out one straight section of the oval tenon. Then, the straight line adjustment mechanism pauses, and the arc adjustment mechanism is activated, driving the main cutting axis to perform a semicircular cut. Just as the semicircle is cut, the arc adjustment mechanism pauses. The straight line adjustment mechanism is activated again, driving the main cutting axis to cut along a straight line, cutting out another straight section, and then the straight line adjustment mechanism pauses. The arc adjustment mechanism is activated again, driving the main cutting axis to cut the other semicircle. At this point, the oval tenon is cut. Before cutting, the position of the workpiece relative to the main cutting axis is adjusted by the table adjustment mechanism to cut out the required size of the oval tenon. This invention uses mechanical drive, which is less expensive than CNC; through the cooperation of the linear adjustment mechanism, the arc adjustment mechanism and the table adjustment mechanism, it is possible to process oval tenons of any size and angle.

[0014] In one embodiment, the circular arc adjustment mechanism includes a first intermittent cam divider and a first spindle, and the linear adjustment mechanism includes a second intermittent cam divider, a second spindle, and a first linear telescopic mechanism. The second intermittent cam divider is slidably connected to the transverse linear guide rail via a base plate, and the first intermittent cam divider is fixedly connected to the second intermittent cam divider. The output shaft of the drive motor is connected to the input shaft of the second intermittent cam divider and the input shaft of the first intermittent cam divider, respectively. One end of the first spindle is connected to the output shaft of the first intermittent cam divider and is eccentrically positioned therebetween. The other end of the first spindle is connected to the main cutter shaft. One end of the second spindle is connected to the output shaft of the second intermittent cam divider and is eccentrically positioned therebetween. The other end of the second spindle is rotatably connected to one end of the first linear telescopic mechanism, and the other end of the first linear telescopic mechanism is rotatably mounted on the frame. The drive motor is mounted on the base plate. The intermittent cam divider is a universal component. One rotation of the input shaft divides the output shaft into two equal parts (drive angle and stop angle). A full rotation of the input shaft (360 degrees) is divided into a drive angle and a stop angle. The drive angle output shaft moves, while the stop angle output shaft remains stationary. The intermittent cam divider used in this invention is bi-divided. Specifically, from 0 to 180 degrees, the output shaft of the first intermittent cam divider is stationary, while the output shaft of the second intermittent cam divider moves, driving the main cutter shaft for straight cutting. From 180 to 360 degrees, the output shaft of the second intermittent cam divider is stationary, while the output shaft of the first intermittent cam divider moves, driving the main cutter shaft for semi-circular cutting. One rotation cuts a straight line and a semi-circle from the tenon. Two rotations produce a complete oblong tenon.

[0015] The second intermittent cam divider, the second spindle, and the first linear telescopic mechanism together form a crank-slider-like structure, converting the circumferential motion of the second intermittent cam divider into linear motion. The second spindle is eccentrically positioned with respect to the output shaft of the second intermittent cam divider. Rotation of the output shaft of the second intermittent cam divider drives the second spindle to rotate. Since one end of the second spindle is connected to the first linear telescopic mechanism, and the other end of the first linear telescopic mechanism is fixed to the frame, the end of the first linear telescopic mechanism connected to the second spindle swings up and down while simultaneously extending and retracting, driving the entire second intermittent cam divider to perform linear motion. The second intermittent cam divider is fixed to the base plate, which is slidably connected to the transverse linear slide rail, causing the first intermittent cam divider, the second intermittent cam divider, and the main cutter shaft to move back and forth along the transverse linear slide rail. The first spindle is eccentrically positioned with respect to the output shaft of the first intermittent cam divider. Rotation of the output shaft of the first intermittent cam divider drives the first spindle to rotate in a circle around the output shaft of the first intermittent cam divider, thereby causing the main cutter shaft to cut an arc shape.

[0016] In one embodiment, the system further includes a first radius adjustment mechanism for adjusting the center distance between the first mandrel and the output shaft of the first intermittent cam divider, and a second radius adjustment mechanism for adjusting the center distance between the second mandrel and the output shaft of the second intermittent cam divider. The first radius adjustment mechanism adjusts the center distance between the first mandrel and the first intermittent cam divider, thereby changing the radius of the arc trajectory of the first mandrel, i.e., changing the radius of the oval tenon cut by the main cutter shaft. The second radius adjustment mechanism adjusts the center distance between the second mandrel and the second intermittent cam divider, i.e., changing the distance the second intermittent cam divider moves along a straight line, thereby adjusting the length of the straight segment of the oval tenon cut by the main cutter shaft. Through the first and second radius adjustment mechanisms, oval tenons of different sizes can be processed.

[0017] In one embodiment, the first radius adjustment mechanism includes a first adjusting seat, a first adjusting screw, a first slide, and a first adjusting nut; the first adjusting seat is fixedly connected to the output shaft of the first intermittent cam divider, the first slide is slidably connected to the first adjusting seat, and the sliding trajectory of the first slide is perpendicular to the first spindle; the first adjusting screw is rotatably mounted on the first adjusting seat, the threaded end of the first adjusting screw passes through the first adjusting nut, and the other end is rotatably connected to the first adjusting seat through a bearing; the first adjusting nut is connected to the first slide, and rotating the first adjusting screw can drive the first slide to slide relative to the first adjusting seat; the first spindle is mounted on the first slide and connected to the output shaft of the first intermittent cam divider. The shafts are arranged in parallel; the second radius adjustment mechanism includes a second adjusting seat, a second adjusting screw, a second slide, and a second adjusting nut; the second adjusting seat is fixedly connected to the output shaft of the second intermittent cam divider, the second slide is slidably connected to the second adjusting seat, and the sliding trajectory of the second slide is perpendicular to the second spindle; the second adjusting screw is rotatably mounted on the second adjusting seat, the threaded end of the second adjusting screw passes through the second adjusting nut, and the other end is rotatably connected to the second adjusting seat through a bearing; the second adjusting nut is connected to the second slide, and rotating the second adjusting screw can drive the second slide to slide relative to the second adjusting seat; the second spindle is mounted on the second slide and is arranged parallel to the output shaft of the second intermittent cam divider.

[0018] In one embodiment, synchronous pulleys are mounted on the output shaft of the drive motor, the input shaft of the first intermittent cam divider, and the input shaft of the second intermittent cam divider. The output shaft of the drive motor is connected to the input shaft of the second intermittent cam divider via a synchronous belt, and the input shaft of the second intermittent cam divider is connected to the input shaft of the first intermittent cam divider via a synchronous belt. A first digital position display is mounted on the first adjusting screw, and a second digital position display is mounted on the second adjusting screw. The first and second digital position displays provide a clearer indication of the distance the first mandrel has moved relative to the output shaft of the first intermittent cam divider and the distance the second mandrel has moved relative to the output shaft of the second intermittent cam divider.

[0019] In one embodiment, the circular arc adjustment mechanism includes a first intermittent cam divider and a first mandrel, and the linear adjustment mechanism includes a drive cylinder. One end of the drive cylinder is mounted on the frame, and the other end is slidably connected to the transverse linear guide rail via a base plate. The first intermittent cam divider and the drive motor are mounted on the base plate. The output shaft of the drive motor is connected to the input shaft of the first intermittent cam divider. One end of the first mandrel is connected to the output shaft of the first intermittent cam divider and is eccentrically positioned relative to the output shaft of the first intermittent cam divider. The other end of the first mandrel is connected to the main cutter shaft. In this scheme, the circular arc adjustment mechanism still uses an intermittent cam divider, while the linear adjustment mechanism is replaced by a drive cylinder. The drive cylinder directly drives the base plate, and the first intermittent cam divider mounted on the base plate performs linear motion, thereby driving the main cutter shaft to perform linear motion. In this scheme, the drive cylinder extends to its position and drives the entire assembly to perform linear motion, realizing linear cutting by the main cutter shaft. At this time, the drive cylinder does not retract immediately. The input shaft of the first intermittent cam divider rotates one revolution, and the output shaft rotates 180 degrees, realizing the cutting of a semicircle. Then, the drive cylinder retracts to its original position, realizing the cutting of another segment of a straight line. Then, the input shaft of the first intermittent cam divider rotates one revolution again, and the output shaft rotates another 180 degrees, completing the cutting of the other semicircle.

[0020] In one embodiment, the linear adjustment mechanism further includes a limiting rod for limiting the extension and retraction distance of the drive cylinder, a pneumatic-hydraulic damping cylinder capable of adjusting the extension and retraction speed, a cylinder seat, and a mounting plate; one end of the drive cylinder is connected to the frame, and the other end of the drive cylinder is connected to the cylinder seat; one end of the pneumatic-hydraulic damping cylinder is connected to the cylinder seat, and the other end is fixedly connected to the base plate via the mounting plate; one end of the limiting rod is fixedly connected to the mounting plate, and the other end is slidably connected to the cylinder seat, and a limiting stop is provided at the end of the limiting rod. When the linear adjustment mechanism adopts a combination of a drive cylinder and a pneumatic-hydraulic damping cylinder, the drive cylinder performs the infeed and retraction operations. Since the pneumatic-hydraulic damping cylinder can also adjust the extension and retraction speed, it is used to perform the operation of the straight segment of the waist-shaped tenon. The specific implementation process is as follows: the drive cylinder starts, driving the whole unit to move linearly, so that the main cutter shaft moves to contact the workpiece, i.e., the infeed action. Then the drive cylinder stops driving, and the pneumatic-hydraulic damping cylinder starts, driving the whole unit to move linearly, realizing the cutting of the straight segment of the waist-shaped tenon. At this time, the pneumatic-hydraulic damping cylinder does not retract immediately. The input shaft of the first intermittent cam divider rotates one revolution, and the output shaft rotates 180 degrees, realizing the cutting of a semicircle. Then the pneumatic-hydraulic damping cylinder retracts to its original position, realizing the cutting of another straight segment. Next, the input shaft of the first intermittent cam divider rotates one revolution again, and the output shaft rotates another 180 degrees to complete the cutting of the other semicircle. Finally, the drive cylinder retracts to its original position, realizing the retraction action. By using two cylinders to work together, and controlling the tool feed and retraction operations with a separate cylinder, the positioning can be made more precise.

[0021] In one embodiment, the table adjustment mechanism includes a horizontal adjustment mechanism, a vertical adjustment mechanism, a pressing mechanism, and a placement table; the horizontal adjustment mechanism is mounted on the frame, and the vertical adjustment mechanism is connected to the movable end of the horizontal adjustment mechanism, enabling the horizontal adjustment mechanism to move horizontally back and forth; the horizontal movement trajectory of the horizontal adjustment mechanism is parallel to the length direction of the linear slide rail; the placement table is connected to the movable end of the vertical adjustment mechanism, enabling the vertical adjustment mechanism to move the placement table up and down; the pressing mechanism is rotatably mounted on the placement table for pressing the workpiece to be processed.

[0022] In one embodiment, the table adjustment mechanism further includes a second linear telescopic mechanism for adjusting the tilt angle of the placement table. The second linear telescopic mechanism includes an adjustment sleeve, an adjustment screw, an adjustment nut, and a locking handle. One side of the placement table is hinged to the movable end of the vertical adjustment mechanism, and the other side is hinged to one end of the adjustment screw. One end of the adjustment sleeve is hinged to the movable end of the vertical adjustment mechanism, and the adjustment nut is rotatably mounted on the other end of the adjustment sleeve. The other end of the adjustment screw passes through the adjustment nut and the adjustment sleeve and is threadedly connected to the adjustment nut. The locking handle is detachably mounted on the adjustment sleeve and abuts against the adjustment screw, thereby limiting the movement of the adjustment screw relative to the adjustment sleeve. By adjusting the tilt angle of the placement table using the second linear telescopic mechanism, the angle of the workpiece relative to the vertical direction of the main cutter axis can be changed, thus enabling the machining of tenons with different angles.

[0023] In one embodiment, the pressing mechanism includes a pressing plate, a pressing cylinder, and a pressing mounting frame; one side of the pressing plate is rotatably connected to the placement table via a rotating shaft, and the other side is slidably connected to the placement table; the pressing mounting frame is mounted on the pressing plate, and the pressing cylinder is mounted on the pressing mounting frame. The pressing plate can rotate relative to the placement table, thereby changing the angle of the workpiece to be processed relative to the horizontal direction of the main cutter axis.

[0024] Compared with the prior art, the beneficial effects are: the mechanical tenoning machine provided by the present invention can not only process oval tenons, but is also more economical than CNC tenoning machines; and can meet the processing of oval single tenons of different sizes and shapes. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure from the first perspective of Embodiment 1.

[0026] Figure 2 This is a schematic diagram of the overall structure from the second perspective of Embodiment 1.

[0027] Figure 3 This is a schematic diagram of the linear adjustment mechanism and the circular adjustment mechanism in Example 1.

[0028] Figure 4 This is a schematic diagram of the linear adjustment mechanism in Example 1.

[0029] Figure 5 This is a schematic diagram of the arc adjustment mechanism in Example 1.

[0030] Figure 6 This is a schematic diagram of the table adjustment mechanism in Example 1.

[0031] Figure 7 yes Figure 6A magnified view of part A in the diagram.

[0032] Figure 8 This is a schematic diagram of the structure of the first or second adjustment mechanism in Embodiment 1.

[0033] Figure 9 This is a schematic diagram of the crossarm structure in Example 1.

[0034] Figure 10 A schematic diagram of the tool feed path in this invention.

[0035] Figure 11 This is a schematic diagram comparing the center reference of the tenon's symmetry with the center reference of the semi-circular end of the waist circle.

[0036] Figure 12 This is a schematic diagram of the linear adjustment mechanism and the circular arc adjustment mechanism in Example 2.

[0037] Reference numerals: 10. Frame; 101. Horizontal linear guide rail; 102. First slide group; 103. Second slide group; 20. Spindle mechanism; 201. Base; 202. Vertical linear guide rail; 203. Third slide group; 204. Spindle slide plate; 205. Main cutter spindle; 206. Cross arm; 2061. Through hole; 301. Base plate; 302. Drive motor; 303. Motor plate; 304. Synchronous pulley; 305. Synchronous belt; 306. First spherical bearing; 307. Second cylinder swing seat; 308. Second tail swing seat; 309. Second tailstock; 31. Linear adjustment mechanism; 311. Second intermittent cam divider; 312. 3101, First linear telescopic mechanism; 313, Second spindle; 3101, Second adjusting seat; 3102, Second slide; 3103, Second adjusting nut; 3104, Second nut; 3105, Third screw; 3106, Second adjusting plate; 3107, Second plane bearing; 3108, Second adjusting screw; 3109, Second locking nut; 3110, First digital position display; 3111, Second limiting plate; 3112, Second screw; 32, Arc adjusting mechanism; 321, First intermittent cam divider; 322, First spindle; 3201, First adjusting seat; 3202, First slide; 3203, First adjusting nut; 3 204. First limiting plate; 3205. First bearing; 3206. First screw; 3207. First adjusting plate; 3208. First flat bearing; 3209. First adjusting screw; 3210. First locking nut; 3211. Second digital position display; 3212. Fourth screw; 3213. First nut; 40. Table adjustment mechanism; 41. First adjustment mechanism; 42. Second linear telescopic mechanism; 43. Second adjustment mechanism; 401. Lateral adjustment seat; 402. Cross slide; 403. Lifting seat; 404. Placement platform; 405. Pressure plate; 406. Pressure rod; 407. Cross fixing clamp; 408. Pressure plate. 409. Cylinder seat; 410. Material pressing cylinder; 4101. Swing angle pressing shaft; 4102. First screw; 4103. Third adjusting seat; 4104. First worm nut; 4105. First handwheel; 4201. Angle adjusting screw; 4202. Angle adjusting nut; 4203. Angle adjusting sleeve; 4204. Ball bearing; 4205. Locking handle; 501. Base frame; 502. Limit rod; 503. Limit nut; 504. Mounting plate; 505. Pneumatic-hydraulic damping cylinder; 506. Guide sleeve; 507. Guide rail; 508. Cylinder seat; 509. Drive cylinder; 510. Second spherical bearing; 511. Tailstock; 60. Workpiece. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The present invention will be described in one embodiment below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only and represent schematic diagrams, not actual pictures, and should not be construed as limiting the present patent. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the actual product size. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0039] In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. In addition, if the embodiments of this invention involve descriptions of "first," "second," etc., such descriptions are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of those features. Furthermore, the meaning of "and / or" throughout the text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that simultaneously satisfies A and B.

[0040] Example 1:

[0041] like Figure 1 , Figure 2 As shown, this embodiment provides a mechanical tenoning machine, including a frame 10. A transverse linear guide rail 101 is horizontally mounted on the upper plane of the frame 10. A first slide block group 102 and a second slide block group 103, each consisting of several slide blocks, are mounted on the transverse linear guide rail 101 and can slide along the transverse linear guide rail 101. A spindle mechanism 20 is mounted on the first slide block group 102, and a linear adjustment mechanism 31 and a circular arc adjustment mechanism 32 are mounted on the second slide block group 103.

[0042] The spindle mechanism 20 includes a base 201, a vertical linear guide rail 202, and a main cutter spindle 205. The base 201 is fixedly connected to the first slide block 102. The vertical linear guide rail 202 is vertically mounted on the base 201. A third slide block 203 is slidably mounted on the vertical linear guide rail 202. A spindle slide plate 204 is fixed on the third slide block 203. The main cutter spindle 205 is horizontally mounted on the spindle slide plate 204. The horizontal linear guide rail 101 of the frame 10 and the vertical linear guide rail 202 of the spindle mechanism 20 provide the main cutter spindle 205 with two mutually perpendicular planar coordinate axes. The two planar coordinate axes form a coordinate system plane perpendicular to the ground plane. The main cutter spindle 205 can move along any trajectory in this coordinate system plane, and it also prevents the main cutter spindle 205 from shaking during rotation. One end of the main shaft 205 is fitted with a horizontally fixed cross arm 206, and the other end of the cross arm 206 is an open through hole 2061 that can be tightened by screws, for connecting with the first spindle 322 of the arc adjustment mechanism 32.

[0043] like Figure 3 As shown, the base plate 301 is fixedly connected to the second slide block 103. The drive motor 302 is fixed below the base plate 301 via the motor plate 303. A linear adjustment mechanism 31 and a circular adjustment mechanism 32 are arranged on the base plate 301 from bottom to top. Both the linear adjustment mechanism 31 and the circular adjustment mechanism 32 have an intermittent cam divider. (The intermittent cam divider is a general-purpose component; when the input shaft rotates one revolution, the output shaft rotates one equal division. A 360-degree revolution of the input shaft is divided into a drive angle and a stop angle. The drive angle output shaft moves, while the stop angle output shaft remains stationary. The intermittent cam divider used in this example is a bisection divider.)

[0044] The linear adjustment mechanism 31 includes a second intermittent cam divider 311, a second spindle 313, a first linear telescopic mechanism 312, and a second radius adjustment mechanism; the second radius adjustment mechanism includes a second adjustment seat 3101, a second adjustment screw 3108, a second slide 3102, and a second adjustment nut 3103. In this embodiment, the first linear telescopic mechanism 312 is selected from the first cylinder.

[0045] like Figure 3 and Figure 4As shown, the second intermittent cam divider 311 is fixed to the base plate 301 as a base. The output shaft of the drive motor 302 and the input shaft of the second intermittent cam divider 311 are respectively provided with synchronous pulleys 304 and connected by synchronous belts 305. The second adjusting seat 3101 is horizontally fixed to the output shaft end of the second intermittent cam divider 311. The second slide 3102 is sleeved on the second adjusting seat 3101 and can move linearly along the slide rails on both sides of the second adjusting seat 3101. The second adjusting nut 3103 is installed inward on the second slide 3102, and the second spindle 313 is fixed outward on the second slide 3102. The first joint bearing 306 is fixed concentrically at the end of the second spindle 313 by a third screw 3105. The first joint bearing 306 is connected to the extension rod of the first cylinder. The tail of the first cylinder is fixed to the frame 10 through the second cylinder swing seat 307, the second tail swing seat 308, and the second tail seat 309. When the first cylinder retracts or expands, it drives the base plate 301 and the linear adjustment mechanism 31 and the arc adjustment mechanism 32 mounted on the base plate 301 to move as a whole. A second adjustment plate 3106 is fixed to one end of the second adjustment seat 3101. The second adjustment plate 3106 has a large through hole, and two second plane bearings 3107 are concentrically positioned at both ends of the through hole. The threaded end of the second adjustment screw 3108 passes through the second adjustment nut 3103, and the other end passes through the through hole and the two second plane bearings 3107 before being fitted with a second locking nut 3109. A stepped surface of the second adjustment screw 3108 and the second locking nut 3109 respectively abut against the second plane bearings 3107 at the through hole end, thereby limiting the axial displacement of the second adjustment screw 3108. A first digital position display 3110 is fitted onto the part of the second adjustment screw 3108 extending beyond the second locking nut 3109 to display the position. The second adjusting screw 3108 has an external hexagonal section extending beyond the first digital position display 3110, facilitating rotation by engaging a handle or wrench. The second adjusting plate 3106 has a threaded hole next to its large through-hole, with a second screw 3112 mounted on it for zero-point limiting. Rotating the second screw 3112 adjusts the limit, and it is locked with a second nut 3104. The other end of the second adjusting seat 3101 is fixed to a second limiting plate 3111, which has a threaded hole with a second screw 3112 mounted on it for maximum limiting. Rotating the second screw 3112 adjusts the limit, and it is locked with a second nut 3104.

[0046] Rotating the second adjusting screw 3108 drives the second slide block 3102 to move along the slide rail, thereby adjusting the center distance between the second spindle 313 and the output shaft of the second intermittent cam divider 311. When the center distance between the second spindle 313 and the output shaft of the second intermittent cam divider 311 is zero, the output shaft of the intermittent cam divider rotates without displacement, and the resulting shape is a waist-shaped circle with a zero center distance. When the center distance between the second spindle 313 and the output shaft of the second intermittent cam divider 311 is non-zero, it is equivalent to a crank mechanism, and the rotation of the output shaft of the second intermittent cam divider 311 will produce displacement, which is the center distance L of the waist-shaped circle.

[0047] like Figure 3 and Figure 5As shown, the arc adjustment mechanism 32 includes a first intermittent cam divider 321, a first spindle 322, and a first radius adjustment mechanism. The first radius adjustment mechanism includes a first adjustment seat 3201, a first adjustment screw 3209, a first slide 3202, and a first adjustment nut 3203. The first intermittent cam divider 321 serves as a base and is fixedly connected to the second intermittent cam divider 311. Synchronous pulleys 304 are provided between the input shaft of the first intermittent cam divider 321 and the input shaft of the second intermittent cam divider 311, and are connected by a synchronous belt 305. The first adjustment seat 3201 is vertically fixed to the output shaft end of the first intermittent cam divider 321. The first slide 3202 is sleeved on the first adjustment seat 3201 and can move linearly along the slide rails on both sides of the first adjustment seat 3201. The first adjustment nut 3203 is mounted inside the first slide 3202. A first spindle 322 is externally fixed to the first slide block 3202. A first bearing 3205 is fitted onto the first spindle 322 and secured by a first screw 3206. The outer ring of the first bearing 3205 is locked in the open through hole 2061 of the cross arm 206. A first adjusting plate 3207 is fixed to one end of the first adjusting seat 3201. The first adjusting plate 3207 has a large through hole. Two first flat bearings 3208 are concentric with the through hole at both ends. The threaded end of the first adjusting screw 3209 passes through the first adjusting nut 3203, and the other end passes through the through hole and the two first flat bearings 3208 before being fitted with a first locking nut 3210. A stepped surface of the first adjusting screw 3209 and the first locking nut 3210 respectively abut against the first flat bearing 3208 at the through hole end, thereby limiting the axial displacement of the first adjusting screw 3209. A second digital position display 3211 is fitted onto the first adjusting screw 3209 extending beyond the first locking nut 3210 to indicate the position. The first adjusting screw 3209 has an external hexagonal section extending beyond the second digital position display 3211, facilitating rotation of the first adjusting screw 3209 using a handle or wrench. A threaded hole is located next to the large through hole of the first adjusting plate 3207, and a fourth screw 3212 is installed in the threaded hole as a zero-point limit. Rotating the fourth screw 3212 adjusts the limit and locks it with the first nut 3213. A first limiting plate 3204 is fixed to the other end of the first adjusting seat 3201. The first limiting plate 3204 has a threaded hole, and a fourth screw 3212 is installed in the threaded hole as a maximum limit. Rotating the fourth screw 3212 adjusts the limit and locks it with the first nut 3213.

[0048] By rotating the first adjusting screw 3209, the first slide block 3202 is driven to move along the slide rail, thereby adjusting the center distance between the first mandrel 322 and the output shaft of the first intermittent cam divider 321. When the center distance between the first mandrel 322 and the output shaft of the first intermittent cam divider 321 is equal to the tool radius, the radius of the output shaft of the first intermittent cam divider 321 is zero. When the center distance between the first mandrel 322 and the output shaft of the first intermittent cam divider 321 is greater than the tool radius, the arc it produces is the center distance minus the tool radius.

[0049] like Figure 2 , Figure 6 , Figure 7 , Figure 8 As shown, the machine frame 10 has a table adjustment mechanism 40 on its side. The table adjustment mechanism 40 includes a horizontal adjustment mechanism, a vertical adjustment mechanism, a pressing mechanism, and a placement table 404. The horizontal adjustment mechanism is mounted on the machine frame 10, and the vertical adjustment mechanism is connected to the movable end of the horizontal adjustment mechanism. The horizontal adjustment mechanism can drive the vertical adjustment mechanism to move back and forth horizontally. The horizontal movement trajectory of the horizontal adjustment mechanism is parallel to the length direction of the linear slide rail. The placement table 404 is connected to the movable end of the vertical adjustment mechanism, and the vertical adjustment mechanism can drive the placement table 404 to move up and down. The pressing mechanism is rotatably mounted on the placement table 404 and is used to press the workpiece 60 to be processed.

[0050] like Figure 2 As shown, the lateral adjustment mechanism includes a lateral adjustment seat 401, a cross slide 402, and a first adjustment mechanism 41; the first adjustment mechanism 41 includes a first screw 4101, a third adjustment seat 4102, a first worm gear 4103, a first worm 4104, and a first handwheel 4105. The vertical adjustment mechanism includes a lifting seat 403 and a second adjustment mechanism 43; the second adjustment mechanism 43 includes a second screw, a fourth adjustment seat, a second worm gear 4103, a second worm 4104, and a second handwheel. The pressing mechanism includes a pressing plate 405, a pressing cylinder 409, and a pressing mounting frame; one side of the pressing plate 405 is rotatably connected to the placement platform 404 via a rotating shaft, and the other side is slidably connected to the placement platform 404; the pressing mounting frame is mounted on the pressing plate 405, and the pressing cylinder 409 is mounted on the pressing mounting frame.

[0051] The transverse adjustment seat 401 is fixed to the side of the frame 10. The transverse adjustment seat 401 has transversely arranged slide rails on both sides, and cross slide blocks 402 are fitted onto these slide rails, allowing linear movement along the rails. The cross slide blocks 402 are composed of mutually perpendicular slide blocks, and their transverse slide blocks cooperate with the transverse slide rails of the transverse adjustment seat 401. A lifting seat 403 is fitted onto the vertical slide block of the cross slide block 402. The lifting seat 403 has vertically arranged slide rails on both sides, allowing linear movement along the vertical slide blocks of the cross slide block 402. A placement table 404 is hinged to the top of the lifting seat 403. A pressure plate 405 serves as a support for the workpiece 60 on the table surface of the placement table 404. The pressure plate 405 is pressed against the table surface by a swing angle pressure shaft 410. Releasing the swing angle pressure shaft 410 allows the pressure plate 405 to swing around the axis of the swing angle pressure shaft 410, thereby changing the horizontal angle between the workpiece 60 and the cutting tool. A pressing cylinder 409 is fixed on the pressing plate 405 by a pressing mounting frame consisting of a pressing rod 406, a cross fixing clamp 407, a pressing cylinder 409 seat 408, and a pressing cylinder 409 base to press the workpiece 60.

[0052] like Figure 2 and Figure 8 As shown, the first screw 4101 is horizontally fixedly connected to the cross slide 402. The third adjusting seat 4102 contains a first worm gear nut that can rotate freely but is axially limited. The inner thread of the first worm gear nut engages with the first screw 4101. The outer worm gear of the first worm gear nut is fitted with a first worm 4104. The first worm 4104 is placed in the third adjusting seat 4102, can rotate freely, and is axially limited. A first handwheel 4105 is mounted on the first worm 4104. Rotating the first handwheel 4105 drives the first worm nut to rotate, which in turn drives the first screw 4101 to move axially, thereby adjusting the horizontal movement of the cross slide 402 and thus adjusting the horizontal movement of the placement platform 404 and the workpiece 60. This allows adjustment of the horizontal distance between the tenon's symmetry center and the side of the workpiece 60. Similarly, the second screw is vertically fixed to the lifting seat 403, and the fourth adjusting seat is fixed to the cross slide 402. Rotating the second handwheel causes the second worm to drive the second worm wheel nut to rotate, which in turn drives the second screw to move axially. This allows adjustment of the longitudinal distance between the tenon's symmetry center and the workpiece's 60° side.

[0053] Example 2

[0054] This embodiment is the same as embodiment 1 in other aspects, except that, as Figure 2 and Figure 6 , Figure 7As shown, the tabletop adjustment mechanism 40 also includes a second linear telescopic mechanism 42 for adjusting the tilt angle of the placement platform 404. The second linear telescopic mechanism 42 includes an adjustment screw 4201, an adjustment nut 4202, and an adjustment sleeve 4203. One end of the adjustment screw 4201 is hinged to the placement platform 404, and the other end of the adjustment screw 4201 is fitted into the adjustment nut 4202 and inserted into the adjustment sleeve 4203. The adjustment nut 4202 has an inward semi-circular groove, and the upper end of the adjustment sleeve 4203 has a corresponding outward semi-circular groove. The annular groove formed by the two semi-circular grooves is filled with ball bearings 4204, allowing the adjustment nut 4202 to rotate freely around the axis of the adjustment sleeve 4203, but with axial limitation. The upper end of the adjustment sleeve 4203 has a threaded hole penetrating the inner hole, and an adjustable locking handle 4205 is provided inside to lock the adjustment screw 4201. The lower end of the adjusting sleeve 4203 is hinged to the lower end of the lifting seat 403. The second linear telescopic mechanism 42, the lifting seat 403, and the placement platform 404 form a triangle. When the adjusting nut 4202 changes the extension of the adjusting screw 4201 relative to the adjusting sleeve 4203, the angle between the placement platform 404 and the lifting seat 403 is changed, thereby achieving the purpose of adjusting the angle of the placement platform 404. This allows the vertical angle between the tenon and the workpiece 60 to be changed, thus producing a beveled tenon.

[0055] Example 3

[0056] like Figure 11 As shown, when the customer chooses not to use the center of symmetry of the tenon as the reference, but instead uses the center of the semicircle at one end of the tenon's waist circle as the reference to position the relative position of the tenon and the workpiece 60, the linear adjustment mechanism 31 has a second option to choose from. For example... Figure 12As shown, in the second embodiment of the linear adjustment mechanism 31, a base frame 501 is fixed on the base plate 301, and a first intermittent cam divider 321 is fixed above the base frame 501. The output shaft of the drive motor 302 and the input shaft of the first cam divider are respectively provided with synchronous pulleys 304 and connected by a synchronous belt 305. The linear adjustment mechanism 31 has a mounting plate 504 fixed on the base plate 301, and a pneumatic-hydraulic damping cylinder 505 is mounted on the mounting plate 504. Two guide sleeves 506 on both sides of the pneumatic-hydraulic damping cylinder 505 are fixed on the mounting plate 504, and guide rails 507 are fitted on the two guide sleeves 506, allowing it to move linearly. A cylinder seat 508 is fixedly connected to the extended rod end of the pneumatic-hydraulic damping cylinder 505. The cylinder seat 508 is fixedly connected to the ends of the two guide rails 507. A drive cylinder 509 is fixedly mounted above the cylinder seat 508. The extended rod end of the drive cylinder 509 is hinged to the tailstock 511 via a second joint bearing 510. The tailstock 511 is fixed to the frame 10. When the drive cylinder 509 extends, it is for tool feed; when the cylinder retracts, it is for tool retraction. The pneumatic-hydraulic damping cylinder 505 can adjust its extension and retraction speed to achieve the purpose of adjusting the feed speed. The extension and retraction stroke of the pneumatic-hydraulic damping cylinder 505 is the center distance a = L of the tenon's waist circle. A limiting rod 502 is fixed on the side of the gas-liquid damping cylinder 505 on the mounting plate 504. After the limiting rod 502 passes through the corresponding through hole of the cylinder seat 508, the end is locked with a limiting stop. In this embodiment, two limiting nuts 503 are used as limiting stops. Adjusting the position of the limiting nuts 503 can adjust and limit the extension limit stroke of the gas-liquid damping cylinder 505, thereby achieving the purpose of adjusting the center distance of the tenon waist circle.

[0057] like Figure 10 As shown, this invention is mechanically driven, following the logic of: feed → L-line → R-semicircle → L-line → R-semicircle → retraction, combining to obtain the cutting diameter required for machining a dovetail tenon. Both the L-line and R-semicircle are adjustable, thus accommodating the machining of dovetail tenons of different sizes. The tenon is positioned relative to the workpiece 60 at different locations by adjusting the placement table 404. Furthermore, it provides two different positioning methods: the dovetail tenon symmetry center and the dovetail tenon end semicircle center, allowing customers to choose the more suitable combination according to their needs.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A mechanical tenoner, characterized in that Comprising a rack (10) provided with a transverse linear guide rail (101); a spindle mechanism (20) comprising a vertical linear guide rail (202) and a main spindle (205); the vertical linear guide rail (202) is in sliding connection with the transverse linear guide rail (101) and can move back and forth along the transverse linear guide rail (101); the main spindle (205) is in sliding connection with the vertical linear guide rail (202) and can move up and down along the vertical linear guide rail (202); a linear adjustment mechanism (31) for driving the main spindle (205) to realize transverse linear motion, the linear adjustment mechanism (31) being installed on the rack (10), the movable end of the linear adjustment mechanism (31) being in sliding connection with the transverse linear guide rail (101); an arc adjustment mechanism (32) for driving the main spindle (205) to realize arc motion and being connected with the movable end of the linear adjustment mechanism (31); a table adjustment mechanism (40) installed on the rack (10) for fixing a workpiece (60) to be processed, the distance and angle of the workpiece (60) to be processed relative to the main spindle (205) being adjustable through the table adjustment mechanism (40); a driving motor (302) connected with the linear adjustment mechanism (31) and the arc adjustment mechanism (32) respectively for driving the linear adjustment mechanism (31) and the arc adjustment mechanism (32) to move; The circular arc adjusting mechanism (32) comprises a first intermittent cam divider (321) and a first core shaft (322), the linear adjusting mechanism (31) comprises a second intermittent cam divider (311), a second core shaft (313) and a first linear telescopic mechanism (312), the second intermittent cam divider (311) is slidably connected with the transverse linear guide rail (101) through a bottom plate (301), and the first intermittent cam divider (321) is fixedly connected with the second intermittent cam divider (311); the output shaft of the driving motor (302) is connected with the input shaft of the second intermittent cam divider (311) and the input shaft of the first intermittent cam divider (321) respectively; one end of the first core shaft (322) is connected with the output shaft of the first intermittent cam divider (321) and is eccentrically arranged with the output shaft of the first intermittent cam divider (321), and the other end of the first core shaft (322) is connected with the main shaft (205); one end of the second core shaft (313) is connected with the output shaft of the second intermittent cam divider (311) and is eccentrically arranged with the output shaft of the second intermittent cam divider (311), and the other end of the second core shaft (313) is rotatably connected with one end of the first linear telescopic mechanism (312), and the other end of the first linear telescopic mechanism (312) is rotatably installed on the rack (10); the driving motor (302) is installed on the bottom plate (301); the first radius adjusting mechanism for adjusting the center distance between the first core shaft (322) and the output shaft of the first intermittent cam divider (321) and the second radius adjusting mechanism for adjusting the center distance between the second core shaft (313) and the output shaft of the second intermittent cam divider (311) are further arranged. Firstly, the linear adjusting mechanism (31) is started to drive the main shaft (205) to cut along a straight line, and a straight line part of the waist round and straight tenon is cut out; then the linear adjusting mechanism (31) is paused, the circular arc adjusting mechanism (32) is started to drive the main shaft (205) to realize semicircular cutting, and when the semicircle is just cut out, the circular arc adjusting mechanism (32) is paused; the linear adjusting mechanism (31) is started again to drive the main shaft (205) to cut along a straight line, and another straight line part is cut out, then the linear adjusting mechanism (31) is paused; the circular arc adjusting mechanism (32) is started again to drive the main shaft (205) to cut the other semicircle, and the cutting of the waist round and straight tenon is completed.

2. The mechanical dovetail machine according to claim 1, characterized in that, The first radius adjusting mechanism comprises a first adjusting seat (3201), a first adjusting screw (3209), a first sliding seat (3202) and a first adjusting nut (3203); the first adjusting seat (3201) is fixedly connected with the output shaft of the first intermittent cam divider (321), the first sliding seat (3202) is in sliding connection with the first adjusting seat (3201), and the sliding track of the first sliding seat (3202) is perpendicular to the first core shaft (322); the first adjusting screw (3209) is rotatably installed on the first adjusting seat (3201), the threaded end of the first adjusting screw (3209) penetrates through the first adjusting nut (3203), and the other end is rotatably connected with the first adjusting seat (3201) through a bearing; the first adjusting nut (3203) is connected with the first sliding seat (3202), and rotating the first adjusting screw (3209) can drive the first sliding seat (3202) to slide relative to the first adjusting seat (3201); the first core shaft (322) is installed on the first sliding seat (3202) and is arranged in parallel with the output shaft of the first intermittent cam divider (321); the second radius adjusting mechanism comprises a second adjusting seat (3101), a second adjusting screw (3108), a second sliding seat (3102) and a second adjusting nut (3103); the second adjusting seat (3101) is fixedly connected with the output shaft of the second intermittent cam divider (311), the second sliding seat (3102) is in sliding connection with the second adjusting seat (3101), and the sliding track of the second sliding seat (3102) is perpendicular to the second core shaft (313); the second adjusting screw (3108) is rotatably installed on the second adjusting seat (3101), the threaded end of the second adjusting screw (3108) penetrates through the second adjusting nut (3103), and the other end is rotatably connected with the second adjusting seat (3101) through a bearing; the second adjusting nut (3103) is connected with the second sliding seat (3102), and rotating the second adjusting screw (3108) can drive the second sliding seat (3102) to slide relative to the second adjusting seat (3101); the second core shaft (313) is installed on the second sliding seat (3102) and is arranged in parallel with the output shaft of the second intermittent cam divider (311).

3. The mechanical dovetail machine of claim 2, wherein, Synchronous pulleys (304) are installed on the output shaft of the driving motor (302), the input shaft of the first intermittent cam divider (321), and the input shaft of the second intermittent cam divider (311), the output shaft of the driving motor (302) is connected with the input shaft of the second intermittent cam divider (311) through a synchronous belt (305), and the input shaft of the second intermittent cam divider (311) is connected with the input shaft of the first intermittent cam divider (321) through a synchronous belt (305); a first digital position display (3110) is sleeved on the first adjusting screw (3209); and a second digital position display (3211) is sleeved on the second adjusting screw (3108).

4. A mechanical tenoner according to any one of claims 1 to 3, characterized in that The table adjusting mechanism (40) comprises a horizontal adjusting mechanism, a vertical adjusting mechanism, a material pressing mechanism and a placing table (404); the horizontal adjusting mechanism is installed on the rack (10), the vertical adjusting mechanism is connected with a movable end of the horizontal adjusting mechanism, and the horizontal adjusting mechanism can drive the vertical adjusting mechanism to move back and forth horizontally; a horizontal movement track of the horizontal adjusting mechanism is parallel to a length direction of the horizontal linear guide rail (101); the placing table (404) is connected with a movable end of the vertical adjusting mechanism, and the vertical adjusting mechanism can drive the placing table (404) to move up and down; and the material pressing mechanism is rotationally installed on the placing table (404) and used for pressing a workpiece (60) to be processed.

5. The mechanical dovetail machine of claim 4, wherein, The table adjusting mechanism (40) further comprises a second linear telescopic mechanism (42) for adjusting an inclination angle of the placing table (404), the second linear telescopic mechanism (42) comprises an angle adjusting sleeve (4203), an angle adjusting screw (4201), an angle adjusting nut (4202) and a locking handle (4205); one side of the placing table (404) is hinged to a movable end of the vertical adjusting mechanism, and the other side is hinged to one end of the angle adjusting screw (4201); one end of the angle adjusting sleeve (4203) is hinged to the movable end of the vertical adjusting mechanism, and the angle adjusting nut (4202) is rotationally installed at the other end of the angle adjusting sleeve (4203); the other end of the angle adjusting screw (4201) is arranged through the angle adjusting nut (4202) and the angle adjusting sleeve (4203) and is threadedly connected with the angle adjusting nut (4202); and the locking handle (4205) is detachably installed on the angle adjusting sleeve (4203) and abuts against the angle adjusting screw (4201) and is used for limiting movement of the angle adjusting screw (4201) relative to the angle adjusting sleeve (4203).

6. The mechanical dovetail machine of claim 4, wherein, The material pressing mechanism comprises a material pressing plate (405), a material pressing cylinder (409) and a material pressing mounting frame; one side of the material pressing plate (405) is rotationally connected with the placing table (404) through a rotating shaft, and the other side is slidingly connected with the placing table (404); the material pressing mounting frame is installed on the material pressing plate (405), and the material pressing cylinder (409) is installed on the material pressing mounting frame.

7. A mechanical tenoner, characterized in that The method comprises A rack (10) is provided with a transverse linear guide rail (101); A spindle mechanism (20) includes a vertical linear guide rail (202) and a main spindle (205); the vertical linear guide rail (202) is in sliding connection with the transverse linear guide rail (101) and can move back and forth along the transverse linear guide rail (101); the main spindle (205) is in sliding connection with the vertical linear guide rail (202) and can move up and down along the vertical linear guide rail (202); A linear adjustment mechanism (31) is used to drive the main spindle (205) to realize transverse linear motion, and the linear adjustment mechanism (31) is installed on the rack (10) and has a movable end in sliding connection with the transverse linear guide rail (101); A circular arc adjustment mechanism (32) is used to drive the main spindle (205) to realize circular arc motion and is connected with the movable end of the linear adjustment mechanism (31); A table adjustment mechanism (40) is installed on the rack (10) and is used to fix a workpiece (60) to be processed, and the distance and angle of the workpiece (60) to be processed relative to the main spindle (205) can be adjusted through the table adjustment mechanism (40); A driving motor (302) is connected with the linear adjustment mechanism (31) and the circular arc adjustment mechanism (32) respectively and is used to drive the linear adjustment mechanism (31) and the circular arc adjustment mechanism (32) to move; The circular arc adjustment mechanism (32) includes a first intermittent cam divider (321) and a first core shaft (322), the linear adjustment mechanism (31) includes a driving cylinder (509), one end of the driving cylinder (509) is installed on the rack (10), the other end is in sliding connection with the transverse linear guide rail (101) through a bottom plate (301), the first intermittent cam divider (321) and the driving motor (302) are installed on the bottom plate (301); an output shaft of the driving motor (302) is connected with an input shaft of the first intermittent cam divider (321), one end of the first core shaft (322) is connected with an output shaft of the first intermittent cam divider (321) and is eccentrically arranged relative to the output shaft of the first intermittent cam divider (321); the other end of the first core shaft (322) is connected with the main spindle (205); and a first radius adjustment mechanism is further included for adjusting the center distance between the first core shaft (322) and the output shaft of the first intermittent cam divider (321). First, the linear adjustment mechanism (31) starts, drives the main shaft (205) along the straight line cutting, cutting out one section of the straight line part of the waist round one word tenon; then the linear adjustment mechanism (31) pauses, the arc adjustment mechanism (32) starts, drives the main shaft (205) to realize semicircular cutting, just cut out half circle, the arc adjustment mechanism (32) pauses; the linear adjustment mechanism (31) starts again, drives the main shaft (205) along the straight line cutting, cuts out another straight line part, and the linear adjustment mechanism (31) pauses; the arc adjustment mechanism (32) starts again, drives the main shaft (205) to cut the other half circle, which completes the cutting of the waist round one word tenon.

8. The mechanical dovetail machine of claim 7, wherein, The first radius adjustment mechanism comprises a first adjustment seat (3201), a first adjustment screw (3209), a first sliding seat (3202), and a first adjustment nut (3203); the first adjustment seat (3201) is fixedly connected with the output shaft of the first intermittent cam divider (321), the first sliding seat (3202) is slidably connected with the first adjustment seat (3201), and the sliding track of the first sliding seat (3202) is perpendicular to the first core shaft (322); the first adjustment screw (3209) is rotatably installed on the first adjustment seat (3201), the threaded end of the first adjustment screw (3209) penetrates the first adjustment nut (3203), and the other end is rotatably connected with the first adjustment seat (3201) through a bearing; the first adjustment nut (3203) is connected with the first sliding seat (3202), and rotating the first adjustment screw (3209) can drive the first sliding seat (3202) to slide relative to the first adjustment seat (3201); the first core shaft (322) is installed on the first sliding seat (3202) and is arranged in parallel with the output shaft of the first intermittent cam divider (321); The linear adjustment mechanism (31) further comprises a limiting rod (502) for limiting the extension and retraction distance of the driving cylinder (509), a pneumatic and hydraulic damping cylinder (505) capable of adjusting the extension and retraction speed, a cylinder seat (508), and a mounting plate (504); one end of the driving cylinder (509) is connected with the rack (10), the other end of the driving cylinder (509) is connected with the cylinder seat (508), one end of the pneumatic and hydraulic damping cylinder (505) is connected with the cylinder seat (508), and the other end is fixedly connected with the bottom plate (301) through the mounting plate (504); one end of the limiting rod (502) is fixedly connected with the mounting plate (504), the other end is slidably connected with the cylinder seat (508), and a limiting stopper is arranged at the end of the limiting rod (502).

9. A mechanical tenoner according to claim 7 or 8, characterised in that, The table adjusting mechanism (40) comprises a transverse adjusting mechanism, a vertical adjusting mechanism, a material pressing mechanism and a placing table (404); the transverse adjusting mechanism is installed on the rack (10), the vertical adjusting mechanism is connected with a movable end of the transverse adjusting mechanism, and the transverse adjusting mechanism can drive the vertical adjusting mechanism to move back and forth transversely; a transverse movement track of the transverse adjusting mechanism is parallel to a length direction of the transverse linear guide rail (101); the placing table (404) is connected with the movable end of the vertical adjusting mechanism, and the vertical adjusting mechanism can drive the placing table (404) to move up and down; and the material pressing mechanism is rotatably installed on the placing table (404) and used for pressing the workpiece (60) to be processed.

10. The mechanical dovetail machine of claim 9, wherein, The table adjusting mechanism (40) further comprises a second linear telescopic mechanism (42) for adjusting an inclination angle of the placing table (404), the second linear telescopic mechanism (42) comprises an angle adjusting sleeve (4203), an angle adjusting screw (4201), an angle adjusting nut (4202) and a locking handle (4205); one side of the placing table (404) is hingedly connected with the movable end of the vertical adjusting mechanism, and the other side is hingedly connected with one end of the angle adjusting screw (4201); one end of the angle adjusting sleeve (4203) is hingedly connected with the movable end of the vertical adjusting mechanism, and the angle adjusting nut (4202) is rotatably installed at the other end of the angle adjusting sleeve (4203); the other end of the angle adjusting screw (4201) is arranged in the angle adjusting nut (4202) and the angle adjusting sleeve (4203) and is threadedly connected with the angle adjusting nut (4202); and the locking handle (4205) is detachably installed on the angle adjusting sleeve (4203) and abuts against the angle adjusting screw (4201) and is used for limiting movement of the angle adjusting screw (4201) relative to the angle adjusting sleeve (4203); The material pressing mechanism comprises a material pressing plate (405), a material pressing cylinder (409) and a material pressing mounting frame; one side of the material pressing plate (405) is rotatably connected with the placing table (404) through a rotating shaft, and the other side is slidably connected with the placing table (404); the material pressing mounting frame is installed on the material pressing plate (405), and the material pressing cylinder (409) is installed on the material pressing mounting frame.

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