Reciprocating mechanism capable of adjusting coordinates and balance of stroke of eccentric crank

Abstract

The invention discloses an eccentric crank stroke coordinate and balance adjustable reciprocating mechanism which comprises a base, a driving mechanism, a transmission mechanism and a mounting mechanism, the transmission mechanism comprises an eccentric wheel and a crankshaft, a connecting shaft is arranged at the eccentric position of the crankshaft, and the crankshaft is movably mounted in the eccentric wheel and can rotate; an adjusting assembly is arranged in the eccentric wheel and is in butt joint with the crankshaft. The connecting shaft is connected with a connecting rod, the connecting rod is connected with a sliding plate, and the sliding plate is slidably erected on the base; the mounting mechanism is mounted on the sliding plate, and the sliding plate is connected with a position adjusting mechanism and a balance adjusting mechanism. Therefore, the coordinate of the tool can be conveniently adjusted, and the gravity of the part is overcome to achieve better balance. The stroke of the reciprocating mechanism can be adjusted, the coordinate position of the stroke can be adjusted, high-precision grinding machining of different strokes and different positions is achieved, parts with different blade lengths are machined, the stable balanced reciprocating stroke is provided, vibration is reduced, and machining precision and lines are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of industrial auxiliary production equipment, and in particular to a reciprocating mechanism for optical projection curve grinding machine equipment. Background Art

[0002] In the field of optical device processing, a reciprocating installation mechanism (referred to as a reciprocating mechanism) is often required to achieve fine adjustment of processing tools or workpieces. At present, the reciprocating motion during processing generally adopts the forward and reverse rotation of the screw, and the nut is fixed on the slide. When the screw rotates forward, the slide moves linearly in one direction, and when the screw rotates reversely, the slide moves linearly in the opposite direction; or a hydraulic cylinder is used to push the push rod to reciprocate. If applied to a vertical reciprocating mechanism, the above two schemes are affected by the gravity of the slide, and during fine grinding, jitter will occur and the speed cannot keep up. In particular, the forward and reverse rotation of the screw is easily worn and loosened due to the influence of gravity, affecting the processing quality. In order to solve the reciprocating motion of the vertical slide, it is necessary to adjust the length of the reciprocating stroke and the coordinate position of the reciprocating stroke. At the same time, there are also high requirements for stability and balance, and it is difficult for the existing reciprocating mechanism to achieve the above various functional requirements at the same time. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides an eccentric crank stroke adjustable coordinate and balanced reciprocating mechanism with more reasonable structural design, convenient adjustment of coordinates, balance and motion range, which can reduce vibration during the machining process and is beneficial to improving machining accuracy.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: an eccentric crank stroke adjustable coordinate and balanced reciprocating mechanism, comprising a base, a driving mechanism, a transmission mechanism and a mounting mechanism, wherein the mounting mechanism is connected to the transmission mechanism and is used to install processing tools, the transmission mechanism is mounted on the base and connected to the driving mechanism, and the driving mechanism is mounted on the base; the transmission mechanism comprises an eccentric wheel and a crank shaft, a connecting shaft is provided at the eccentric position of the crank shaft, the crank shaft is movably installed in the eccentric wheel to form a structure that can rotate in the eccentric wheel; an adjusting component is provided in the eccentric wheel, the adjusting component is docked with the crank shaft to realize driving the crank shaft to rotate and adjust the position of the connecting shaft; the connecting shaft is connected to a connecting rod, the connecting rod is connected to a sliding plate, the sliding plate is slidably mounted on the base, and the crank shaft drives the connecting rod to swing with the rotation of the eccentric wheel to push the sliding plate to make a linear motion along the base; the mounting mechanism is installed on the sliding plate, and the sliding plate is connected to a position adjustment mechanism and a balance adjustment mechanism.

[0005] Furthermore, the adjustment assembly includes a worm wheel and a worm, a mounting groove is provided at the eccentric position of the eccentric wheel, and the crank shaft is installed in the mounting groove; a worm wheel hole is provided in the mounting groove, and the worm wheel is installed in the worm wheel hole, the crank shaft is connected to the worm wheel, and the worm wheel is connected to the driving mechanism; a worm hole is provided on the circumferential side wall of the eccentric wheel, the worm is installed in the worm hole and extends into the worm hole to mesh with the worm wheel, and the tail end of the worm is exposed in the worm hole to form an adjustable structure.

[0006] Furthermore, a top ball and a top tightening nut are installed on the other side of the circumferential side wall of the eccentric wheel as a tightening member, and the top ball presses against the head end of the worm.

[0007] Furthermore, the connecting rod is connected to an adjustment bracket, and the extension direction of the adjustment bracket is the same as the sliding direction of the sliding plate; an adjustment groove is provided in the adjustment bracket, and a pressure strip is provided in the adjustment groove, and the sliding plate is locked and fixed to the adjustment bracket by bolts passing through the pressure strip.

[0008] Furthermore, the position adjustment mechanism includes a screw rod, a nut is provided on the screw rod, and the nut is connected and fixed to the adjustment bracket; a first bevel tooth is fixed on the screw rod, the first bevel tooth is meshed with a second bevel tooth, the second bevel tooth is connected to an adjustment shaft, and the adjustment shaft extends out of the sliding plate; the balancing adjustment mechanism includes a balancing cylinder, the balancing cylinder is installed on the back of the sliding plate, and is connected to the base through the cylinder rod of the balancing cylinder to form a structure that balances the gravity of the sliding plate, and the cylinder rod is arranged parallel to the screw rod.

[0009] Furthermore, an axis core is installed in the base, and the worm gear is connected to the axis core; the driving mechanism includes a motor, the motor is connected to a driving wheel, the driving wheel is connected to a driven wheel through a belt, and the driven wheel is connected to the axis core; a motor seat is installed on the back of the base, an adjustment plate is installed on the motor seat through fixing screws, and the motor is installed on the adjustment plate; a strip hole is provided on the adjustment plate, and the fixing screw passes through the strip hole to be fixed to the motor seat, and an adjusting screw is provided on the side of the adjusting plate, and the adjusting screw abuts against the fixing screw to form a structure that pushes the fixing screw to move laterally.

[0010] Furthermore, a slide rail is arranged on the front of the base, and the sliding plate is mounted on the slide rail through a slider; two travel switches are arranged on the side of the base near the slide rail, and a travel bumper is arranged on the side of the sliding plate, and the travel bumper is located between the two travel switches to form a linear motion range of the sliding plate.

[0011] Furthermore, a fixed plate is installed on the front side of the sliding plate, an axle pin is provided on the fixed plate, and the processing tool is connected to the axle pin to form a structure that can rotate along the axle pin; a fixed block is installed on the fixed plate, and the fixed block is located below the processing tool; an adjustment screw is provided in the fixed block, and the adjustment screw abuts against the processing tool to form a fine-tuning structure for the processing tool.

[0012] Furthermore, a partition is arranged between the sliding plate and the fixed plate to separate the two, and the partition covers the sliding plate to prevent dust; the partition is provided with a avoidance hole and an arc hole, and the partition is locked and fixed by a locking screw and a locking screw to make the avoidance hole opposite to the adjusting shaft and the bolt fixing the sliding plate.

[0013] Furthermore, a window is provided on one side of the base, and the window is opposite to the circumferential side wall of the eccentric wheel; a hexagonal hole which can be rotated by a hexagonal wrench is provided at the tail end of the worm; a side cover is provided on the side of the base, an opening is provided on the side cover at a position aligned with the window, and a movable cover which can be opened and closed is provided at the opening; slide rail covers are provided on both sides of the slide rail, and the slide rail and the slider are blocked by the slide rail covers to prevent dust.

[0014] The present invention realizes the movement of the processing tool within the diameter range of the eccentric wheel by setting a crankshaft in conjunction with the eccentric wheel, and at the same time setting an adjustment component, a coordinate adjustment mechanism and a balance adjustment mechanism, etc., so that the coordinates of the tool can be easily adjusted and the gravity of the parts themselves can be overcome to achieve better balance. In this way, both the stroke of the reciprocating mechanism and the coordinate position of the stroke can be adjusted, so as to realize high-precision grinding processing at different strokes and different positions, process parts with different blade lengths, and provide a stable and balanced reciprocating stroke, reduce vibration, and ensure processing accuracy and texture. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall structure diagram of the present invention;

[0016] Figure 2 This is a front structural diagram of the present invention;

[0017] Figure 3 It is a side structural diagram of the present invention;

[0018] Figure 4 This is a decomposition structure diagram of the present invention;

[0019] Figure 5 This is a decomposition structure diagram from another angle of the present invention;

[0020] Figure 6 It is a structural diagram of the main part of the present invention;

[0021] Figure 7 It is a decomposition structure diagram of the main part of the present invention;

[0022] Figure 8 It is an exploded structural diagram of the driving mechanism and the base of the present invention;

[0023] Fig. 9 It is an exploded structural diagram of the worm gear system of the present invention;

[0024] Fig.10It is an exploded view of the sliding plate and the lifting mechanism of the present invention.

[0025] In the figure, 1 is a base, 11 is a shaft core, 12 is a slide rail, 13 is a slider, 14 and 15 are travel switches, 16 is a window, 21 is a motor, 22 is a driving wheel, 23 is a driven wheel, 24 is a belt, 25 is a motor seat, 26 is an adjustment plate, 27 is a fixing screw, 28 is an adjusting screw, 31 is an eccentric wheel, 311 is a mounting groove, 312 is a worm wheel hole, 32 is a worm wheel, 33 is a worm, 34 is a crank shaft, 341 is a connecting shaft, 35 is a connecting rod, 36 is an adjustment bracket, 37 is a top ball, and 38 is a top nut , 4 is a sliding plate, 41 is a balancing cylinder, 42 is a cylinder rod, 43 is a pressure strip, 44 is a travel collision block, 45 is a bolt, 51 is a screw rod, 52 is a nut, 53 is a first bevel tooth, 54 is a second bevel tooth, 55 is an adjusting shaft, 6 is a grinding head, 61 is a grinding wheel, 62 is a support foot, 63 is a fixed block, 64 is an adjusting screw, 7 is a partition, 71 is a avoidance hole, 72 is an arc hole, 73 is a locking screw, 74 is a locking screw, 8 is a fixing plate, 81 is a shaft pin, 91 is a side cover, 92 is a slide rail cover, and 10 is a movable cover. DETAILED DESCRIPTION

[0026] In this embodiment, refer to Figure 1-Figure 10 The eccentric crank stroke adjustable coordinate and balanced reciprocating mechanism includes a base 1, a driving mechanism, a transmission mechanism and a mounting mechanism. The mounting mechanism is connected to the transmission mechanism and is used to install a processing tool (in this embodiment, the processing tool is a grinding head 6 with a grinding wheel 61 as an example). The transmission mechanism is installed on the base 1 and connected to the driving mechanism. The driving mechanism is installed on the base 1; the transmission mechanism includes an eccentric wheel 31 and a crank shaft 34. The eccentric position of the crank shaft 34 is provided with a connecting shaft 341. The crank shaft 34 is movably installed in the eccentric wheel 31 to form a connection shaft 341 that can be moved at the eccentric position. The eccentric wheel 31 is provided with an adjusting component, which is connected with the crank shaft 34 to drive the crank shaft 34 to rotate and adjust the position of the connecting shaft 341; the connecting shaft 341 is connected with a connecting rod 35, and the connecting rod 35 is connected with a sliding plate 4, and the sliding plate 4 is slidably mounted on the base 1, and the crank shaft 34 rotates with the eccentric wheel 31 to drive the connecting rod 35 to swing back and forth, thereby pushing the sliding plate 4 to move linearly along the base 1; the mounting mechanism is installed on the sliding plate 4, and the sliding plate 4 is connected with a position adjustment mechanism and a balance adjustment mechanism.

[0027] Reference Figure 7 and Fig. 9The adjustment assembly includes a worm wheel 32 and a worm 33. A mounting groove 311 is provided at the eccentric position of the eccentric wheel 31, and a crank shaft 34 is installed in the mounting groove 311; a worm wheel hole 312 is provided in the mounting groove 311, and the worm wheel 32 is installed in the worm wheel hole 312. The crank shaft 34 is connected to the worm wheel 32, and the worm wheel 32 is connected to the driving mechanism; a worm hole (not marked) is provided on the circumferential side wall of the eccentric wheel 31, and the worm 33 is installed in the worm hole and extends into the worm hole 312 to mesh with the worm wheel 32, and the tail end of the worm 33 is exposed in the worm hole so that it can be adjusted from the outside. Manual rotation of the worm 33 can be converted into a circular motion of the worm wheel 32, so that the crank shaft 34 can be rotated to put the connecting shaft in different positions.

[0028] A top ball 37 is provided on the other side of the circumferential side wall of the eccentric wheel 31 to cooperate with a top nut 38 as a fastening member, and the top ball 37 abuts against the head end of the worm 33. In this way, the worm 33 can be adjusted and rotated, but will not move up and down, and interlock with the worm wheel 32.

[0029] Figure 5 , Figure 7 and Fig.10 The connecting rod 35 is connected to an adjustment bracket 36, and the extension direction of the adjustment bracket 36 is the same as the sliding direction of the sliding plate 4; an adjustment slot is provided in the adjustment bracket 36, and a pressure strip 43 with a T-shaped cross section is provided in the adjustment slot, and the sliding plate 4 is locked and fixed to the adjustment bracket 36 by passing through the pressure strip 43 through a bolt 45. After loosening the bolt 45, the position of the pressure strip 43 can be moved up and down to adjust the position of the sliding plate 4, that is, the coordinate can be adjusted.

[0030] The position adjustment mechanism includes a screw rod 51, on which a nut 52 is arranged, and the nut 52 is connected and fixed to the adjustment bracket 36; a first bevel tooth 53 is fixed to the screw rod 51, and the first bevel tooth 53 is meshed with a second bevel tooth 54, and the second bevel tooth 54 is connected to an adjustment shaft 55, and the adjustment shaft 55 extends out of the sliding plate 4. The adjustment shaft 55 is rotated from the outside, and the adjustment shaft 55 drives the second bevel tooth 54, thereby linking the first bevel tooth 53 and the screw rod 51, so that the screw rod 51 rotates relative to the nut 52, thereby driving the sliding plate 4 to make a linear motion, thereby realizing fine adjustment (precise adjustment) of the coordinate position.

[0031] The balancing adjustment mechanism includes a balancing cylinder 41, which is installed on the back of the sliding plate 4. The balancing cylinder 41 is connected to the base 1 through the cylinder rod 42 of the balancing cylinder 41 to form a structure for balancing the gravity of the sliding plate 4. The cylinder rod 42 is arranged in parallel with the screw rod 41. Since there is downward gravity on the mechanical structural parts such as the sliding plate 4, the grinding head 6, and the grinding wheel 61 on the base 1, an unbalanced force will be generated when the mechanism reciprocates up and down. The balancing cylinder 41 adopts a unilateral air supply method to give the cylinder rod 42 a downward thrust, so that the balancing cylinder 41 generates an upward thrust. This upward thrust will offset the downward gravity of the sliding plate 4, thereby improving the balance and stability of the mechanism during operation and reducing vibration.

[0032] Reference Figure 8 A shaft core 11 is installed in the base 1, and a worm gear 32 is connected to the shaft core 11; the driving mechanism includes a motor 21, the motor 21 is connected to a driving wheel 22, the driving wheel 22 is connected to a driven wheel 23 through a belt 24, and the driven wheel 23 is connected to the shaft core 11; a motor seat 25 is installed on the back of the base 1, an adjusting plate 26 is installed on the motor seat 25 through a fixing screw 27, and the motor 21 is installed on the adjusting plate 26; a strip hole is provided on the adjusting plate 26, and the fixing screw 27 passes through the strip hole and is fixed to the motor seat 25, and an adjusting screw 28 is provided on the side of the adjusting plate 26, and the adjusting screw 28 is abutted against the fixing screw 27, and the adjusting plate 26 can be pushed to move laterally by rotating the adjusting screw 28, thereby changing the distance between the driving wheel 22 and the driven wheel 23, that is, adjusting the tension of the belt 24 is achieved.

[0033] A slide rail 12 is arranged on the front of the base 1, and the slide plate 4 is mounted on the slide rail 12 through a slider 13; two travel switches 14 and 15 are arranged on the side of the base 1 near the slide rail 12, and a travel bumper 44 is arranged on the side of the slide plate 4. The travel bumper 44 is located between the two travel switches 14 and 15 to form a linear motion range of the slide plate 4. When the travel of the slide plate 4 is adjusted to exceed the limit of the travel switches 14 and 15, the travel bumper 44 will press the travel switch 14 or the travel switch 15, and the system will control the motor 21 to stop working to avoid collision.

[0034] A fixed plate 8 is installed on the front of the sliding plate 4, and an axle pin 81 is arranged on the fixed plate 8. The grinding head 6 is connected with the axle pin 81 to form a structure that can rotate along the axle pin 81; a fixed block 63 is installed on the fixed plate 8, and the fixed block 63 is located below the grinding head 6; an adjustment screw 64 is arranged in the fixed block 63, and the adjustment screw 64 abuts against the support foot 62 of the grinding head 6. The horizontality of the grinding head 6 will affect the verticality of the grinding wheel 61, thereby affecting the accuracy of the grinding wheel 61 during grinding. In order to eliminate this effect, the adjustment screw 64 can be tightened by a hexagonal wrench, and the adjustment screw 64 can push the grinding head 6 to rotate to achieve a suitable horizontality, thereby adjusting the verticality of the grinding wheel 61 to meet the vertical requirements of the processing. In addition, the grinding wheel 61 can be installed on the grinding head 6 through a flange, and can be processed for different molds, cutters, rollers, hardware, etc.

[0035] Reference Figure 1 , Figure 2 , Figure 3 and Fig.10 , a partition 7 is arranged between the sliding plate 4 and the fixed plate 8 to separate the two, and the partition 7 covers the sliding plate 4 to prevent dust; the partition 7 is provided with a position-avoiding hole 71 and an arc-shaped hole 72, and the partition 7 is locked and fixed by a locking screw 73 and a locking screw 74 to make the position-avoiding hole 71 opposite to the adjusting shaft 55 and the bolt 45 fixing the sliding plate 4. The slide plate can rotate to a certain angle, and the rotation range is the opening range of the arc-shaped hole 72. When the slide plate 7 is rotated to the position-avoiding hole 71 opposite to the adjusting shaft 55 and the screw 45, the screw 45 can be loosened first through the hexagonal wrench through the position-avoiding hole 71, and then the adjusting shaft 55 can be rotated to adjust the position of the sliding plate 4. After the adjustment is completed, the bolts are tightened to lock the sliding plate 4 and the adjusting bracket 36. Then the partition 8 is rotated to close the position-avoiding hole and tighten the locking screw 73 and the locking screw 74 to prevent dust.

[0036] A window 16 is provided on one side of the base 1, and the window 16 is opposite to the circumferential side wall of the eccentric wheel 31; a hexagonal hole that can be rotated by a hexagonal wrench is provided at the tail end of the worm 33; a side cover 91 is provided on the side of the base 1, and an opening is provided on the side cover 91 at a position aligned with the window 16, and a movable cover 10 that can be opened and closed is provided at the opening; when the eccentric wheel 31 is to be adjusted, the movable cover 10 is opened to expose the window 16. When the eccentric wheel 31 is adjusted, the movable cover 10 is closed with the window 16 to prevent dust. Slide rail covers 92 are provided on both sides of the slide rail 12, and the slide rail 12 and the slider 13 are blocked by the slide rail covers 92 to prevent dust.

[0037] The worm 33 is rotated to adjust the circumferential position of the worm wheel 32 and the crank shaft 34, that is, when the connecting shaft 341 of the crank shaft 34 coincides with the central axis of the eccentric wheel 31, the motor 21 drives the eccentric wheel 31 and the crank shaft 34 to make circular motion. Since the connecting shaft 341 of the crank shaft 34 is located at the center of the eccentric wheel 31, that is, it rotates around the center of the circle, so that the crank shaft 34 makes a circular motion with the eccentric wheel 31, the connecting rod 36 does not make a reciprocating swing motion, and the sliding plate 4 does not make a linear reciprocating motion.

[0038] The worm 33 is rotated to adjust the circumferential position of the worm wheel 32 and the crank shaft 34, that is, when the connecting shaft 341 of the crank shaft 34 is located at the maximum distance from the center of the eccentric wheel 31, the motor 21 drives the crank shaft 34 to make a circular motion. Since the connecting shaft 341 of the crank shaft 34 is located at the outermost circle of the eccentric wheel 31, that is, the connecting shaft 341 makes a circular rotation motion with the center of the eccentric wheel 31 as the center and the distance between the connecting shaft 341 and the center of the eccentric wheel 31 as the radius, so that the connecting rod 36 can make a swinging motion in the maximum range. The crank shaft 34 rotates one circle, that is, the connecting rod 36 swings back and forth, and the crank shaft 34 keeps rotating, that is, the sliding plate 4 can make a linear reciprocating motion, and the distance of the linear reciprocating motion is equal to the diameter of the circle formed by the connecting shaft 34 of the crank shaft 34 when rotating with the eccentric wheel 31, that is: D=2∏R.

[0039] By adjusting the worm 33, the connecting shaft 341 of the crankshaft 34 can be located at the circumferential position of the eccentric wheel 31. The closer to the center of the eccentric wheel 31, the smaller the radius of the circular motion of the connecting shaft 341, and the smaller the linear reciprocating motion distance converted to the sliding plate 4; the greater the distance between the crankshaft 34 and the center of the eccentric wheel 31, the larger the radius of the circular motion of the connecting shaft 341, and the larger the linear reciprocating motion distance converted to the sliding plate 4. The stroke of the crankshaft 34 can be checked by checking the scale indication on the eccentric wheel 31 and the position pointed to by the scale of the crankshaft 34, that is, the stroke is adjustable.

[0040] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. An eccentric crank stroke adjustable coordinate and balanced reciprocating mechanism, comprising a base, a driving mechanism, a transmission mechanism and a mounting mechanism, wherein the mounting mechanism is connected to the transmission mechanism and is used to mount a processing tool, the transmission mechanism is mounted on the base and connected to the driving mechanism, and the driving mechanism is mounted on the base, characterized in that: The transmission mechanism includes an eccentric wheel and a crank shaft. A connecting shaft is arranged at the eccentric position of the crank shaft. The crank shaft is movably installed in the eccentric wheel to form a structure that can rotate in the eccentric wheel. An adjusting component is arranged in the eccentric wheel. The adjusting component is connected to the crank shaft to realize driving the crank shaft to rotate and adjust the position of the connecting shaft. The connecting shaft is connected to a connecting rod, and the connecting rod is connected to a sliding plate. The sliding plate is slidably mounted on a base. The crank shaft drives the connecting rod to swing with the rotation of the eccentric wheel to push the sliding plate to make a linear motion along the base. The mounting mechanism is installed on the sliding plate, and the sliding plate is connected to a position adjustment mechanism and a balance adjustment mechanism.

2. The eccentric crank stroke adjustable coordinate and balanced reciprocating mechanism according to claim 1, characterized in that: The adjustment assembly includes a worm wheel and a worm. A mounting groove is provided at the eccentric position of the eccentric wheel, and the crank shaft is installed in the mounting groove; a worm wheel hole is provided in the mounting groove, and the worm wheel is installed in the worm wheel hole, the crank shaft is connected to the worm wheel, and the worm wheel is connected to the driving mechanism; a worm hole is provided on the circumferential side wall of the eccentric wheel, the worm is installed in the worm hole and extends into the worm hole to mesh with the worm wheel, and the tail end of the worm is exposed in the worm hole to form an adjustable structure.

3. The eccentric crank stroke adjustable coordinate and balanced reciprocating mechanism according to claim 2, characterized in that: A top ball and a top nut are arranged on the other side of the circumferential side wall of the eccentric wheel as a fastening member, and the top ball abuts against the head end of the worm.

4. The eccentric crank stroke adjustable coordinate and balanced reciprocating mechanism according to claim 1, characterized in that: The connecting rod is connected with an adjusting bracket, and the extending direction of the adjusting bracket is the same as the sliding direction of the sliding plate; an adjusting groove is arranged in the adjusting bracket, and a pressure strip is arranged in the adjusting groove, and the sliding plate is locked and fixed with the adjusting bracket by bolts passing through the pressure strip.

5. The eccentric crank stroke adjustable coordinate and balanced reciprocating mechanism according to claim 4, characterized in that: The position adjustment mechanism includes a screw rod, a nut is arranged on the screw rod, and the nut is connected and fixed to the adjustment bracket; a first bevel tooth is fixed on the screw rod, the first bevel tooth is meshed with a second bevel tooth, the second bevel tooth is connected to an adjustment shaft, and the adjustment shaft extends out of the sliding plate; the balancing adjustment mechanism includes a balancing cylinder, the balancing cylinder is installed on the back of the sliding plate, and is connected to the base through the cylinder rod of the balancing cylinder to form a structure that balances the gravity of the sliding plate, and the cylinder rod is arranged parallel to the screw rod.

6. The eccentric crank stroke adjustable coordinate and balanced reciprocating mechanism according to claim 2, characterized in that: An axis core is installed in the base, and the worm gear is connected to the axis core; the driving mechanism includes a motor, the motor is connected to a driving wheel, the driving wheel is connected to a driven wheel through a belt, and the driven wheel is connected to the axis core; a motor seat is installed on the back of the base, an adjustment plate is installed on the motor seat through fixing screws, and the motor is installed on the adjustment plate; a strip hole is provided on the adjustment plate, and the fixing screw passes through the strip hole and is fixed to the motor seat, and an adjusting screw is provided on the side of the adjusting plate, and the adjusting screw abuts against the fixing screw to form a structure that pushes the fixing screw to move horizontally.

7. The eccentric crank stroke adjustable coordinate and balanced reciprocating mechanism according to claim 2, characterized in that: A slide rail is arranged on the front of the base, and the sliding plate is mounted on the slide rail through a slider; two travel switches are arranged on the side of the base near the slide rail, and a travel bumper is arranged on the side of the sliding plate, and the travel bumper is located between the two travel switches to form a linear motion range of the sliding plate.

8. The eccentric crank stroke adjustable coordinate and balanced reciprocating mechanism according to claim 5, characterized in that: A fixed plate is installed on the front of the sliding plate, and an axle pin is arranged on the fixed plate. The processing tool is connected with the axle pin to form a structure that can rotate along the axle pin; a fixed block is installed on the fixed plate, and the fixed block is located below the processing tool; an adjustment screw is arranged in the fixed block, and the adjustment screw abuts against the processing tool to form a fine-tuning structure for the processing tool.

9. The eccentric crank stroke adjustable coordinate and balanced reciprocating mechanism according to claim 8, characterized in that: A partition is arranged between the sliding plate and the fixed plate to separate the two, and the sliding plate is covered by the partition; a avoidance hole and an arc hole are arranged on the partition, and the partition is locked and fixed by a locking screw and a locking screw, so that the avoidance hole is opposite to the adjusting shaft and the bolt for fixing the sliding plate.

10. The eccentric crank stroke adjustable coordinate and balanced reciprocating mechanism according to claim 7, characterized in that: A window is provided on one side of the base, and the window is opposite to the circumferential side wall of the eccentric wheel; a hexagonal hole which can be rotated by a hexagonal wrench is provided at the tail end of the worm; a side cover is provided on the side of the base, an opening is provided on the side cover at a position aligned with the window, and a movable cover which can be opened and closed is provided at the opening; slide rail covers are provided on both sides of the slide rail, and the slide rail and the slider are blocked by the slide rail covers.

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