A gear modification device

Abstract

The present invention discloses a gear modification device, which includes a main frame, a transmission mechanism, a planetary speed increasing mechanism and a driving mechanism. The transmission mechanism is configured to synchronously drive a first synchronous pulley and a second synchronous pulley to rotate by a main motor. The first synchronous pulley drives the planetary speed increasing mechanism to operate, so that the grinding head revolves and rotates around the rotation center. The second synchronous pulley drives a driving shaft and a driving gear in the driving mechanism to rotate, thereby driving the gear to be processed to rotate. Each time the grinding head revolves one week, it is embedded into the tooth groove of the gear to be processed once, so as to polish, chamfer or modify the tooth surface. The structure of the present invention is compact, small in volume, convenient to operate, and has no professional skill requirements for operators, effectively improving the quality and efficiency of gear modification and grinding.

Description

Technical Field

[0001] The present invention relates to the field of gear processing, and particularly to a gear modification device. Background Art

[0002] Currently, gear modification generally uses special tools for grinding. The equipment is complex and huge, has high requirements for the operator's skills, low processing efficiency and high cost. When chamfering the gear rim, either the processing efficiency is very low, or the appearance is not smooth and beautiful, and even manual processing is used for chamfering, which affects the processing quality and efficiency.

[0003] Therefore, how to create a new gear modification device is one of the important current research topics. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a gear modification device with a compact structure, small volume, simple and convenient operation, which can be operated without the operator having professional skills, and improve the processing quality and efficiency, thus overcoming the deficiencies of the prior art.

[0005] To solve the above technical problem, the present invention provides a gear modification device, including a main frame, a transmission mechanism, a planetary speed increasing mechanism and a driving mechanism;

[0006] The transmission mechanism, the planetary speed increasing mechanism and the driving mechanism are all installed on the main frame;

[0007] The transmission mechanism includes a main motor, a first synchronous pulley and a second synchronous pulley. The output shaft of the main motor is connected to the first synchronous pulley and the second synchronous pulley through a synchronous belt, and the main motor drives the first synchronous pulley and the second synchronous pulley to rotate synchronously;

[0008] The planetary speed increasing mechanism includes a planetary carrier, planetary gears, a sun gear, a swing frame and a ring gear. The ring gear is fixedly connected to the main frame. The first synchronous pulley is coaxially connected to the planetary carrier to drive the planetary carrier to rotate around the center of rotation. The planetary gears are installed on the planetary carrier and mesh with the internal teeth of the ring gear. The sun gear meshes with the planetary gears. The swing frame is sleeved on the planetary gear shaft, and the sun gear shaft is installed on the cantilever of the swing frame. The swing frame is used to limit the relative positions of the planetary gear shaft and the sun gear shaft. A grinding head is installed on the sun gear shaft;

[0009] The driving mechanism includes a first mounting frame and a second mounting frame. A vertical driving shaft is provided on the first mounting frame. The second synchronous pulley is connected to the driving shaft. A driving gear is installed on the driving shaft. A vertical driven shaft is provided on the second mounting frame. A gear to be processed is installed on the driven shaft. The driving gear meshes with the gear to be processed;

[0010] The first synchronous pulley drives the planet carrier to rotate, and drives the sun gear to revolve and rotate around the rotation center through the planet gears and the swing frame, thereby enabling the grinding head to revolve and rotate around the rotation center. The second synchronous pulley drives the driving shaft and the driving gear to rotate, thereby driving the gear to be machined to rotate. Each time the grinding head makes one revolution, it is inserted into the tooth groove of the gear to be machined once, and the tooth surface is ground, chamfered or profiled.

[0011] As an improvement of the present invention, the tooth number ratio of the driving gear to the gear to be machined is a non-integer to ensure that each tooth groove can be machined.

[0012] Furthermore, the planetary speed increasing mechanism further includes an outer box body. The inside of the outer box body is hollow and penetrates up and down. The outer box body is fixedly connected to the main frame. The ring gear is fixedly connected to the top of the outer box body. The planet carrier is an integral structure of a frame body and a rotating shaft. The frame body is fixedly connected to the top of the rotating shaft. The rotating shaft vertically passes through the inside of the outer box body and is connected to the first synchronous pulley. The rotating shaft is rotatably connected to the inner wall of the outer box body through a bearing.

[0013] Furthermore, a counterweight block is arranged on the planet carrier. The shape of the counterweight block is arc-shaped. The installation position of the counterweight block is on the opposite side of the planet gears, and is used to keep the planet carrier balanced.

[0014] Furthermore, a locking screw is arranged on the swing frame. Loosening the locking screw is used to enable the swing frame to rotate around the planet gear shaft, and tightening the locking screw is used to lock the swing frame. The swing frame rotates to different positions to adjust the revolution radius of the sun gear.

[0015] Furthermore, a sealing plate is arranged on the top of the ring gear. An arc-shaped limiting groove is formed in the sealing plate, and is used to limit the adjustment space of the sun gear shaft.

[0016] Furthermore, a gear profiling device further includes a feeding mechanism. The feeding mechanism includes a slide rail and a lead screw. Two groups of slide rails are horizontally arranged on the main frame. The first mounting frame and the second mounting frame are respectively mounted on the slide rails, so that the first mounting frame and the second mounting frame are respectively slidably connected to the main frame. A lead screw seat is arranged on the main frame. The lead screw is horizontally mounted on the lead screw seat. The first mounting frame is threadedly connected to the lead screw. Rotating the lead screw is used to drive the first mounting frame to slide horizontally along the slide rail. The driving shaft on the first mounting frame is connected to the second synchronous pulley through a universal coupling.

[0017] Furthermore, a tension spring is connected between the first mounting frame and the second mounting frame, and is used to keep the driving gear and the gear to be machined always meshed.

[0018] Further, a connection disk is fixedly connected to the lead screw. A third synchronous pulley is mounted outside the connection disk through a bearing. A first card slot is formed in the connection disk. A plurality of second card slots are evenly formed in the circumferential direction of the third synchronous pulley. The switching wrench is placed in both the first card slot and the second card slot at the same time to realize the keyway connection between the connection disk and the third synchronous pulley. The third synchronous pulley is connected to the output shaft of the feed motor through a synchronous belt. Pressing the switching wrench is used to drive the third synchronous pulley by the feed motor and then drive the lead screw to rotate. Pulling out the switching wrench is used to disconnect the connection between the lead screw and the third synchronous pulley to manually rotate the lead screw.

[0019] Further, the main frame includes a fixed frame and a rotary frame. A horizontal rotary shaft is provided on the fixed frame. The rotary frame is coaxially sleeved outside the rotary shaft, enabling the rotary frame to rotate around the rotary shaft. The first mounting frame and the second mounting frame are both mounted on the rotary frame. Rotating the rotary frame is used to adjust the inclination angle of the gear to be processed.

[0020] After adopting such a design, the present invention has at least the following advantages:

[0021] 1. The sun gear shaft rotates around its own axis and revolves around the center of the planet gear mechanism at the same time through the planetary speed increasing mechanism, so that the grinding head rotates around its own axis and moves along a circular track. Every time it moves one circle, it is embedded into the tooth groove of the gear to be processed once. The grinding head grinds the tooth surface to be processed by rotating around its own axis. After the gear to be processed rotates several circles, the grinding head can grind and modify all tooth surfaces, with high processing efficiency;

[0022] 2. By adjusting the position of the swing-back frame, the revolution radius of the sun gear shaft can be adjusted, that is, the movement track of the grinding head can be adjusted. By rotating the lead screw, the horizontal displacement of the driving gear and the gear to be processed can be realized, that is, the feeding and pushing of the tool can be realized, and the adjustment is flexible and convenient;

[0023] 3. By rotating the rotary frame to incline the gear to be processed, or replacing the grinding head with a specific shape, or replacing the grinding head with a grinding disc, the modification of the tooth direction and the chamfering of the gear rim can be realized;

[0024] 4. The structure is compact and the volume is small, which is convenient for desktop operation;

[0025] 5. The operation is convenient, and the operator does not need to have professional skills to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly, the following further detailed description of the present invention will be given in conjunction with the drawings and specific embodiments.

[0027] Figure 1 It is a schematic structural diagram of a gear modification device provided by the present invention.

[0028] Figure 2It is a schematic three-dimensional structure diagram of a gear modification device provided by the present invention.

[0029] Figure 3 It is another schematic three-dimensional structure diagram of a gear modification device provided by the present invention.

[0030] Figure 4 It is a schematic external structure diagram of a planetary speed increasing mechanism.

[0031] Figure 5 It is a schematic internal structure diagram of a planetary speed increasing mechanism.

[0032] Figure 6 It is a schematic diagram of the operating state of the planetary speed increasing mechanism before the pendulum frame is adjusted.

[0033] Figure 7 It is a schematic diagram of the operating state of the planetary speed increasing mechanism after the pendulum frame is adjusted.

[0034] Figure 8 It is a schematic principle diagram of a gear modification device provided by the present invention.

[0035] Figure 9 It is a schematic partial structure diagram of a feed mechanism.

[0036] Figure 10 It is a schematic structure diagram of a main frame.

[0037] Explanation of reference numerals: 1. Main frame; 101. Fixed frame; 102. Rotating shaft; 103. Rotary frame; 2. Transmission mechanism; 201. Main motor; 202. First synchronous pulley; 203. Second synchronous pulley; 204. Universal coupling; 3. Planetary speed increasing mechanism; 301. Outer box; 302. Planet carrier; 303. Planet gear; 304. Planet gear shaft; 305. Sun gear; 306. Sun gear shaft; 307. Grinding head; 308. Ring gear; 309. Pendulum frame; 310. Locking screw; 311. Counterweight; 312. Sealing plate; 313. Limit groove; 4. Driving mechanism; 401. First mounting frame; 402. Driving shaft; 403. Driving gear; 404. Second mounting frame; 405. Driven shaft; 406. Gear to be processed; 5. Feed mechanism; 501. Slide rail; 502. Lead screw; 503. Lead screw seat; 504. Tension spring; 505. Connecting plate; 506. Third synchronous pulley; 507. Feed motor; 508. Switching wrench; 509. First card slot; 510. Second card slot; r. Revolution radius of the grinding head; a. Distance between the center of the gear to be processed and the center of revolution of the grinding head. Detailed implementation mode

[0038] Please refer to Figures 1 to 3 , the present invention provides a gear modification device, including a main frame 1, a transmission mechanism 2, a planetary speed increasing mechanism 3, a driving mechanism 4 and a feed mechanism 5.

[0039] The transmission mechanism 2, the planetary speed increasing mechanism 3, the driving mechanism 4 and the feeding mechanism 5 are all installed on the main frame 1, and the main frame 1 plays a supporting role.

[0040] The transmission mechanism 2 includes a main motor 201, a first synchronous pulley 202 and a second synchronous pulley 203. The output shaft of the main motor 201 is drivingly connected to the first synchronous pulley 202 and the second synchronous pulley 203 through a synchronous belt. The first synchronous pulley 202 and the second synchronous pulley 203 have the same number of teeth, so that the main motor 201 drives the first synchronous pulley 202 and the second synchronous pulley 203 to rotate synchronously, and the rotational speeds and directions of the first synchronous pulley 202 and the second synchronous pulley 203 are the same.

[0041] Please refer to Figure 4 and Figure 5 The planetary speed increasing mechanism 3 includes an outer box body 301, a planetary carrier 302, planetary gears 303, a sun gear 305, a swing frame 309 and a ring gear 308.

[0042] The inside of the outer box body 301 is hollow and penetrates up and down. The bottom of the outer box body 301 is fixedly connected to the main frame 1, the top is fixedly connected to the ring gear 308, and the inside is used to install the planetary carrier 302.

[0043] The planetary carrier 302 includes a vertically arranged rotating shaft and a frame body at the top of the rotating shaft, and the rotating shaft and the frame body are an integral structure. The rotating shaft of the planetary carrier 302 vertically penetrates the outer box body 301 and is connected to the first synchronous pulley 202. Bearings are arranged inside the outer box body 301, and the rotating shaft of the planetary carrier 302 is rotatably connected to the inner wall of the outer box body 301 through the bearings. The frame body of the planetary carrier 302 is triangular, and a planetary gear 303 is installed at one vertex, and arc-shaped counterweights 311 are installed at the other two vertices, so that the whole of the counterweights 311 is located on the opposite side of the planetary gear 303 to keep the planetary carrier 302 balanced.

[0044] The planetary gear shaft 304 is fixedly connected to the planetary carrier 302. The planetary gear 303 is installed on the planetary gear shaft 304 through a bearing, and the planetary gear 303 meshes with the internal teeth of the ring gear 308. When the planetary carrier 302 rotates, the planetary gear 303 moves along the inner circumference of the ring gear 308 and rotates around the planetary gear shaft 304.

[0045] The sun gear 305 meshes with the planetary gear 303, and the sun gear 305 is fixedly connected to the sun gear shaft 306, so that the sun gear shaft 306 rotates together with the sun gear 305. A grinding head 307 is installed at the top of the sun gear shaft 306, so as to realize the high-speed rotation of the grinding head 307.

[0046] The swing frame 309 is sleeved on the planetary gear shaft 304, and the sun gear shaft 306 is installed on the cantilever of the swing frame 309, whose function is to limit the relative position between the planetary gear shaft 304 and the sun gear shaft 306. It should be noted that the sun gear 305 and the sun gear shaft 306 are not located at the center of rotation of the planet carrier 302. The sun gear shaft 306 is installed on the cantilever of the swing frame 309 through bearings. When the position of the swing frame 309 is locked, the relative position between the sun gear shaft 306 and the planetary gear shaft 304 is fixed, and the sun gear shaft 306 and the sun gear 305 both move along with the planetary gear 303. The movement trajectory of the planetary gear 303 is circular motion, so the movement trajectories of the sun gear shaft 306 and the sun gear 305 are also circular motion, that is, the revolution motion.

[0047] A locking screw 310 is also provided on the swing frame 309. After loosening the locking screw 310, the swing frame 309 can rotate around the planetary gear shaft 304, and tightening the locking screw 310 locks the swing frame 309. Please refer to Figure 6 and Figure 7 , it can be seen from the figure that when the swing frame 309 swings to different positions, the distance between the sun gear shaft 306 and the center of rotation is also different, that is, adjusting the position of the swing frame 309 can adjust the size of the grinding head revolution radius r.

[0048] In this embodiment, a sealing plate 312 is provided at the top of the gear ring 308, and an arc-shaped limiting groove 313 is opened on the sealing plate 312. The function of the limiting groove 313 is to limit the sun gear shaft 306, so that the sun gear shaft 306 can only be adjusted within the space where the limiting groove 313 is located, that is, the adjustment range of the swing frame 309 is limited.

[0049] The overall operating principle of the planetary speed increasing mechanism 3 is that the planet carrier 302 is used as the input end, the sun gear 305 is used as the output end, the gear ring 308 is fixed, the first synchronous pulley 202 drives the planet carrier 302 to rotate around the center of rotation, the planet carrier 302 drives the planetary gear 303 to move, the planetary gear 303 rotates around its own axis and revolves around the center of rotation at the same time, the swing frame 309 is in a locked state to limit the relative position between the sun gear 305 and the planetary gear 303, and the sun gear 305 rotates around its own axis and revolves around the center of rotation along with the planetary gear 303 at the same time, that is, the grinding head 307 rotates around its own axis and revolves around the center of rotation at the same time. Adjusting the position of the swing frame 309 can adjust the size of the grinding head revolution radius r, that is, adjust the dressing trajectory.

[0050] Please refer to Figures 1 to 3, the driving mechanism 4 includes a first mounting bracket 401 and a second mounting bracket 404. A vertical driving shaft 402 is provided on the first mounting bracket 401, and a driving gear 403 is mounted on the driving shaft 402. The second synchronous pulley 203 is in transmission connection with the driving shaft 402 through a universal coupling 204. A vertical driven shaft 405 is provided on the second mounting bracket 404, and a gear to be processed 406 is mounted on the driven shaft 405. The driving gear 403 meshes with the gear to be processed 406, and the tooth number ratio of the driving gear 403 to the gear to be processed 406 is a non-integer.

[0051] During the process of the first synchronous pulley 202 driving the planetary speed increasing mechanism 3 to operate, the revolution speeds of the grinding head 307, the sun gear 305, and the planetary gear 303 are all consistent with the rotation speeds of the planetary carrier 302 and the first synchronous pulley 202, and the directions are the same.

[0052] During the process of the second synchronous pulley 203 driving the driving mechanism 4 to operate, the rotation speed of the driving gear 403 is consistent with the rotation speed of the second synchronous pulley 203, and the directions are the same.

[0053] Since the first synchronous pulley 202 and the second synchronous pulley 203 are synchronously driven by the main motor 201, and their rotation speeds and directions are consistent, the revolution speed of the grinding head 307 is consistent with the rotation speed of the driving gear 403, and the directions are the same.

[0054] Please refer to Figure 8 , the revolution of the grinding head 307 can be imagined as a hypothetical gear with only one tooth, and the grinding head 307 is the only tooth on this hypothetical gear. The rotation speed V3 of this hypothetical gear is equal to the rotation speed V1 of the driving gear 403 and the directions are the same, while the gear to be processed 406 rotates in the opposite direction with a rotation speed of V2. While the driving gear 403 drives the gear to be processed 406 to rotate, this hypothetical gear also meshes with the gear to be processed 406. Every time the grinding head 307 makes one revolution, it is inserted into the tooth groove of the gear to be processed 406 once, and the tooth surface of the gear to be processed 406 is polished and shaped by the high-speed self-rotation of the grinding head 307. By adjusting the revolution radius r of the grinding head 307, the shaping trajectory is adjusted.

[0055] After the gear to be processed 406 rotates several circles, after the grinding head 307 polishes all the tooth surfaces of the gear to be processed 406, the shaping is completed. In order to ensure that all the tooth grooves of the gear to be processed 406 have the opportunity to contact the grinding head 307, the tooth number ratio of the driving gear 403 to the gear to be processed 406 is set as a non-integer.

[0056] The feeding mechanism 5 is used to push the gear to be processed 406 to move horizontally to realize the adjustment of feed, retraction, and shaping amount. Please refer to Figure 8 , in the figure, the feeding mechanism 5 is used to adjust the distance a between the center of the gear to be processed and the center of the revolution of the grinding head. Adjusting this distance is to adjust the shaping amount.

[0057] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 9 The feeding mechanism 5 includes a slide rail 501, a screw rod 502, a screw rod seat 503 and a tension spring 504. Two sets of slide rails 501 are horizontally arranged on the main frame 1, and the first mounting frame 401 and the second mounting frame 404 are respectively mounted on the slide rails 501, so that the first mounting frame 401 and the second mounting frame 404 are respectively connected to the main frame 1 by sliding. A screw rod seat 503 is arranged on the main frame 1, and the screw rod 502 is horizontally mounted on the screw rod seat 503. The first mounting frame 401 and the screw rod 502 are threadedly connected, and a tension spring 504 is connected between the first mounting frame 401 and the second mounting frame 404. Forward rotation of the screw rod 502 can drive the first mounting frame 401 and the second mounting frame 404 to slide in the direction of the grinding head 307 to achieve feeding; reverse rotation of the screw rod 502 drives the first mounting frame 401 and the second mounting frame 404 to slide in the direction away from the grinding head 307 to achieve retracting. During the sliding process, the tension spring 504 ensures that the driving gear 403 and the processed gear 406 are always meshed, and the universal coupling 204 ensures that transmission can still be achieved when the driving gear 403 and the second synchronous pulley 203 are not coaxial.

[0058] The feeding mechanism 5 also includes a third synchronous pulley 506, a feeding motor 507 and a switching wrench 508. The end of the screw rod 502 is fixedly connected to a connecting disk 505, and a first slot 509 is opened on the connecting disk 505. The third synchronous pulley 506 is mounted on the outside of the connecting disk 505 through a bearing, and a plurality of second slots 510 are evenly opened on the third synchronous pulley 506 along the circumferential direction. The switching wrench 508 is placed in the first slot 509 and the second slot 510 at the same time, so that the keyway connection between the connecting disk 505 and the third synchronous pulley 506 can be realized. The third synchronous pulley 506 is connected to the output shaft of the feeding motor 507 through a synchronous belt. When the switching wrench 508 is pressed, the third synchronous pulley 506 can drive the connecting disk 505, and then drive the screw rod 502 to rotate, so as to realize electric feeding. When the switching wrench 508 is pulled out, the connection between the third synchronous pulley 506 and the connecting disk 505 is disconnected, so as to realize manual feeding.

[0059] See also Figure 10, in a preferred embodiment, the main frame 1 includes a fixed frame 101 and a rotary frame 103. A horizontal rotary shaft 102 is provided on the fixed frame 101, and the rotary frame 103 is coaxially sleeved outside the rotary shaft 102, enabling the rotary frame 103 to rotate around the rotary shaft 102. The driving mechanism 4 and the feeding mechanism 5 are both installed on the rotary frame 103. After the rotary frame 103 rotates by a certain angle, or when using a grinding head with a specific shape, or when replacing the grinding head 307 with a grinding disc, the device can be used for tooth profile modification or chamfering of the gear rim.

[0060] When the present invention is in use, first, the gear to be processed 406 is installed on the second mounting frame 404, and the driving gear 403 is engaged with the gear to be processed 406; then, the gear to be processed 406 is pushed to the cutting position by the feeding mechanism 5; then, the locking screw 310 is loosened and the swing frame 309 is adjusted to the specified position. After adjustment, the locking screw 310 is tightened to lock the swing frame 309. At this time, the revolution radius r of the grinding head 307 is a set value; finally, the main motor 201 is started, the first synchronous pulley 202 drives the planetary speed increasing mechanism 3 to operate, thereby enabling the grinding head 307 to rotate at a high speed both around its own axis and in a circular motion around the gear to be processed. The second synchronous pulley 203 drives the driving gear 403 to rotate, thereby driving the gear to be processed 406 to rotate. Each time the grinding head 307 makes one revolution around the gear to be processed, it engages with the tooth groove of the gear to be processed 406 once to grind the tooth surface; after the gear to be processed 406 rotates several circles, the grinding head 307 can complete the grinding of all tooth surfaces; after completion, the main motor 201 is turned off, and the feeding mechanism 5 is operated in the reverse direction to make the gear to be processed 406 return to the retraction position.

[0061] The present invention has a compact structure, a small volume, is easy to operate, does not require professional skills for the operator, and effectively improves the quality and efficiency of gear modification and grinding.

[0062] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Any simple modifications, equivalent changes or decorations made by those skilled in the art using the disclosed technical content all fall within the protection scope of the present invention.

Claims

1. A gear modification device, characterized in that, It includes a main frame, a transmission mechanism, a planetary speed increasing mechanism, and a driving mechanism; The transmission mechanism, the planetary speed increasing mechanism, and the driving mechanism are all installed on the main frame; The transmission mechanism includes a main motor, a first synchronous pulley, and a second synchronous pulley. The output shaft of the main motor is connected to the first synchronous pulley and the second synchronous pulley through a synchronous belt for driving the first synchronous pulley and the second synchronous pulley to rotate synchronously; The planetary speed increasing mechanism includes a planetary carrier, planetary gears, a sun gear, a swinging frame, and a ring gear. The ring gear is fixedly connected to the main frame. The first synchronous pulley is coaxially connected to the planetary carrier to drive the planetary carrier to rotate around the rotation center. The planetary gears are installed on the planetary carrier and mesh with the internal teeth of the ring gear. The sun gear meshes with the planetary gears. The swinging frame is sleeved on the planetary gear shaft. The sun gear shaft is installed on the cantilever of the swinging frame. The swinging frame is used to limit the relative positions of the planetary gear shaft and the sun gear shaft. A grinding head is installed on the sun gear shaft; The driving mechanism includes a first mounting frame and a second mounting frame. A vertical driving shaft is provided on the first mounting frame. The second synchronous pulley is connected to the driving shaft for transmission. A driving gear is installed on the driving shaft. A vertical driven shaft is provided on the second mounting frame. A gear to be processed is installed on the driven shaft. The driving gear meshes with the gear to be processed; The first synchronous pulley drives the planetary carrier to rotate, and drives the sun gear to revolve and rotate around the rotation center through the planetary gears and the swinging frame, thereby causing the grinding head to revolve and rotate around the rotation center. The second synchronous pulley drives the driving shaft and the driving gear to rotate, thereby driving the gear to be processed to rotate. The grinding head is inserted into the tooth groove of the gear to be processed once every revolution to polish, chamfer, or modify the tooth surface.

2. The gear modification device according to claim 1, wherein, The tooth ratio of the driving gear to the gear to be processed is a non-integer to ensure that each tooth groove can be processed.

3. A gear modification device according to claim 1, characterized in that, The planetary speed increasing mechanism further includes an outer box body. The interior of the outer box body is hollow and penetrates up and down. The outer box body is fixedly connected to the main frame. The ring gear is fixedly connected to the top of the outer box body. The planetary carrier is an integral structure of a frame and a rotating shaft. The frame is fixedly connected to the top of the rotating shaft. The rotating shaft vertically passes through the interior of the outer box body and is connected to the first synchronous pulley. The rotating shaft is rotatably connected to the inner wall of the outer box body through a bearing.

4. A gear modification device according to claim 1, characterized in that, A counterweight block is provided on the planetary carrier. The shape of the counterweight block is arc-shaped. The installation position of the counterweight block is on the opposite side of the planetary gears for maintaining the balance of the planetary carrier.

5. A gear modification device according to claim 1, characterized in that, A locking screw is provided on the swinging frame. Loosening the locking screw allows the swinging frame to rotate around the planetary gear shaft, and tightening the locking screw locks the swinging frame. The swinging frame rotates to different positions for adjusting the revolution radius of the sun gear.

6. A gear modification device according to claim 5, characterized in that, A sealing plate is provided on the top of the ring gear. An arc-shaped limiting groove is opened on the sealing plate for limiting the adjustment space of the sun gear shaft.

7. A gear modification device according to claim 1, characterized in that It further includes a feeding mechanism. The feeding mechanism includes a slide rail and a lead screw. Two groups of slide rails are horizontally arranged on the main frame. The first mounting frame and the second mounting frame are respectively mounted on the slide rails, so that the first mounting frame and the second mounting frame are respectively slidably connected to the main frame. A lead screw seat is arranged on the main frame. The lead screw is horizontally mounted on the lead screw seat. The first mounting frame is threadedly connected to the lead screw. Rotating the lead screw is used to drive the first mounting frame to slide horizontally along the slide rail. The driving shaft on the first mounting frame is connected to the second synchronous pulley through a universal coupling.

8. A gear modification device according to claim 7, characterized in that, A tension spring is connected between the first mounting frame and the second mounting frame to keep the driving gear and the gear to be machined always meshed.

9. A gear modification device according to claim 7, characterized in that, A connection disk is fixedly connected to the lead screw. A third synchronous pulley is mounted outside the connection disk through a bearing. A first card slot is opened on the connection disk. Several second card slots are evenly opened in the circumferential direction of the third synchronous pulley. The switching wrench is simultaneously placed in the first card slot and the second card slot to achieve the keyway connection between the connection disk and the third synchronous pulley. The third synchronous pulley is connected to the output shaft of the feeding motor through a synchronous belt. Pressing the switching wrench is used to make the feeding motor drive the third synchronous pulley and then drive the lead screw to rotate. Pulling out the switching wrench is used to disconnect the connection between the lead screw and the third synchronous pulley to manually rotate the lead screw.

10. A gear modification device according to claim 1, characterized in that, The main frame includes a fixed frame and a rotary frame. A horizontal rotary shaft is provided on the fixed frame. The rotary frame is coaxially sleeved outside the rotary shaft, so that the rotary frame can rotate around the rotary shaft. The first mounting frame and the second mounting frame are both mounted on the rotary frame. Rotating the rotary frame is used to adjust the inclination angle of the gear to be machined.

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