A machining device for a planetary gear shaft

Abstract

The application relates to the cutting technical field and discloses a machining device for planetary gear shafts, which comprises a base, a cutting mechanism for simultaneously cutting a plurality of planetary gear shafts is arranged on the base, a vertical screw rod is rotationally connected to the base, a guide rod is fixedly connected to the base, a lifting block is threadedly connected to the vertical screw rod, and the lifting block is slidably connected with the guide rod; a plurality of positioning parts are equidistantly arranged on the lifting block along the length direction of the lifting block, the positioning part comprises a positioning block symmetrically fixed to the lifting block, an inclined surface for abutting against the planetary gear shaft is arranged on the positioning block, the two inclined surfaces of the positioning part are oppositely arranged, and the distance between the two inclined surfaces of the positioning part gradually increases from top to bottom; and the machining device further comprises a driving mechanism for driving the vertical screw rod to rotate. The scheme mainly solves the problem of low production efficiency of the existing cutting device in the cutting processing mode for the batch planetary gear shafts.

Description

Technical Field

[0001] This invention relates to the field of cutting technology, and more specifically to a machining apparatus for planetary gear shafts. Background Technology

[0002] The planetary gear shaft is a component in a planetary reducer, used to limit the axial movement of the planetary gears. The machining accuracy of the planetary gear shaft affects the rotation of the planetary gears, thus affecting the operation of the planetary reducer. Currently, the length of the planetary gear shaft is cut according to the usage requirements to obtain the required size. The traditional cutting method is to remove the excess part by wire cutting, but this cutting method is slow and inefficient, which seriously affects production efficiency.

[0003] To address the aforementioned issues, Chinese Patent Publication No. CN205020928U discloses a cutting device for a planetary gear shaft. The device includes a base fixed to the ground, on which a sun gear clamping mechanism and a sun gear cutting mechanism are mounted. The base also includes a sun gear clamping mechanism moving guide rail and a clamping seat driving device for moving the sun gear clamping mechanism towards the sun gear cutting mechanism. The sun gear clamping mechanism is mounted on the sun gear clamping mechanism moving guide rail. The height difference between the cutting center line of the sun gear cutting mechanism and the clamping center line of the sun gear clamping mechanism is between 1 / 2 and 5 / 6 of the sun gear radius. The base also includes a cover to prevent chips from scattering. This patent offers fast cutting speed, high efficiency, and better cutting quality.

[0004] In actual use, the planetary gear shaft is first clamped and then cut to obtain the required size. When there are many planetary gear shafts to be cut, if the cutting method of the above patent is used, on the one hand, the planetary gear shafts are clamped one by one by hand, which is cumbersome. On the other hand, only one planetary gear shaft can be cut at a time, resulting in low cutting efficiency and seriously affecting production efficiency. Summary of the Invention

[0005] The present invention aims to provide a processing device for planetary gear shafts to solve the problem of low production efficiency of existing cutting devices for batch cutting of planetary gear shafts.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a processing device for planetary gear shafts, comprising a base, a cutting mechanism for simultaneously cutting multiple planetary gear shafts on the base, a vertical screw rotatably connected to the base, a guide rod fixedly connected to the base, a lifting block threadedly connected to the vertical screw, and the lifting block slidably connected to the guide rod; a plurality of positioning parts are equidistantly arranged on the lifting block along the length direction of the lifting block, each positioning part including a positioning block symmetrically fixed to the lifting block, and an inclined surface on the positioning block for abutting against the planetary gear shaft, the two inclined surfaces of the positioning part being arranged opposite to each other, and the distance between the two inclined surfaces of the positioning part gradually increasing from top to bottom; and a driving mechanism for driving the vertical screw to rotate.

[0007] The principle and advantages of this scheme are:

[0008] 1. This solution places multiple planetary gear shafts one by one on the base, positioning them between two positioning blocks in the positioning section. A drive mechanism rotates a vertical screw, causing a lifting block to move downwards. This lifting block then moves the two positioning blocks of the positioning section downwards synchronously. As the distance between the two inclined surfaces of the positioning section gradually increases from top to bottom, the two inclined surfaces gradually approach the planetary gear shaft. The lifting block continues to move downwards until both inclined surfaces of the positioning section abut against the planetary gear shaft, thus clamping the planetary gear shaft using the two positioning blocks. Compared to existing technologies, this solution can simultaneously position multiple planetary gear shafts, and then simultaneously cut them using a cutting mechanism, thereby improving cutting efficiency and production efficiency. Furthermore, using a mechanical structure to replace manual positioning of the planetary gear shafts simplifies operation and further improves production efficiency.

[0009] 2. In this solution, since both inclined surfaces of the positioning part abut against the planetary gear shaft, the planetary gear shaft can be pressed by the two inclined surfaces of the positioning part, thereby enhancing the positioning effect of the planetary gear shaft; furthermore, the pressing method can also prevent vertical movement of the planetary gear shaft during cutting, thus ensuring the quality of cutting.

[0010] Furthermore, the surface of the base is provided with several grooves at equal intervals along the length of the base. The grooves include guide grooves symmetrically opened on the surface of the base. The positioning block is located in the guide groove and can move vertically in the guide groove.

[0011] With the above settings, the positioning block moves in the guide groove, which can limit the positioning block and prevent it from moving in the lateral direction, thus preventing damage to the positioning block.

[0012] Furthermore, the positioning block is provided with a wedge surface, and the wedge surface and the inclined surface are respectively located on both sides of the positioning block; the base is provided with a cavity, which is connected to the guide groove, and the positioning block can move in the cavity; a number of limiting parts are provided at equal intervals along the length direction of the cavity inside the cavity, and the limiting parts include a fixed block fixedly connected to the cavity and a top groove located on both sides of the surface of the fixed block. A wedge block that abuts against the wedge surface is slidably connected in the top groove, and a first spring is provided between the wedge block and the top groove.

[0013] With the above configuration, during the downward movement of the two positioning blocks of the positioning part, the positioning blocks move downward in the guide groove. Since the wedge surface abuts against the wedge block, the wedge block slides in the top groove, that is, the two wedge blocks move away from each other, and the first spring is compressed. Therefore, the reaction force of the first spring can play a limiting role on the positioning block, thereby improving the stability of the two positioning blocks of the positioning part for the planetary gear shaft.

[0014] Furthermore, a rotating shaft is rotatably connected to the base, and the rotating shaft extends into the cavity; a number of reinforcing parts are equidistantly arranged along the axial direction of the rotating shaft. The reinforcing parts include threaded sections symmetrically arranged on the rotating shaft, and clamping blocks for abutting against the wedges are threadedly connected to the threaded sections. The clamping blocks are slidably connected to the cavity, and the two clamping blocks of the reinforcing parts move in opposite directions; it also includes a linkage part that drives the rotating shaft to rotate with the rotation of the vertical screw.

[0015] With the above configuration, during the rotation of the vertical screw, the vertical screw drives the rotating shaft to rotate through the linkage, causing the two clamping blocks of the reinforcing part to move closer together; as the rotating shaft continues to rotate, the two clamping blocks of the fixing part abut against the two wedges of the limiting part respectively. By using the two clamping blocks of the fixing part to limit the two wedges of the limiting part, the two positioning blocks of the positioning part can be limited, thereby improving the stability of the positioning of the planetary gear shaft by the two positioning blocks of the positioning part.

[0016] Furthermore, the chamber is provided with several vertical grooves at equal intervals along its length. The vertical grooves are located between two guide grooves of the groove group, and a pressure block is slidably connected in the vertical groove. Auxiliary grooves are provided on both sides of the vertical groove. A one-way screw is rotatably connected to the fixed block, and a guide post is provided on the fixed block. Both the one-way screw and the guide post extend into the vertical groove. The pressure block is threadedly connected to the one-way screw and slidably connected to the guide post. A first driven bevel gear is fixedly connected to the one-way screw. Several first driving bevel gears are provided at equal intervals along the axial direction of the rotating shaft. The first driving bevel gears mesh with the first driven bevel gears. A side block is provided on the inclined surface. The side block extends into the vertical groove through the auxiliary groove and can move vertically in the vertical groove. The bottom of the pressure block abuts against the top of the side block.

[0017] With the above configuration, during the downward movement of the two positioning blocks of the positioning part, the positioning blocks move downward within the guide groove, and the positioning blocks drive the side blocks to move downward synchronously along the auxiliary groove, causing the side blocks to move into the cavity. During the rotation of the shaft, the shaft also drives the first driving bevel gear to rotate. The first driving bevel gear meshes with the first driven bevel gear, driving the first driven bevel gear to rotate. The first driven bevel gear drives the one-way screw to rotate, causing the pressure block to move downward into the cavity, so that the bottom of the pressure block simultaneously abuts against the top of the two side blocks, thus pressing the two positioning blocks of the positioning part, thereby limiting the two positioning blocks of the positioning part and improving the stability of the two positioning blocks of the positioning part for the planetary gear shaft; furthermore, the pressing method can also prevent vertical movement of the planetary gear shaft during cutting, thereby ensuring the quality of cutting.

[0018] Furthermore, the linkage includes a second driving bevel gear fixedly connected to the vertical screw and a second driven bevel gear coaxially connected to the rotating shaft, wherein the second driving bevel gear meshes with the second driven bevel gear.

[0019] With the above configuration, during the rotation of the vertical screw, the vertical screw drives the second driving bevel gear to rotate, the second driving bevel gear meshes with the second driven bevel gear to drive the second driven bevel gear to rotate, and the second driven bevel gear drives the rotating shaft to rotate.

[0020] Furthermore, the base has a groove on its surface, and several round shafts are equidistantly connected to the groove along its length. The round shafts are provided with arc-shaped blocks for pressing the planetary gear shafts. It also includes a power mechanism for driving the several round shafts to rotate simultaneously.

[0021] With the above configuration, the power mechanism can simultaneously drive multiple circular shafts to rotate. During the rotation of the circular shafts, the circular shafts drive the arc-shaped blocks to rotate synchronously, causing the arc-shaped blocks to move towards the planetary gear shaft. As the circular shafts continue to rotate, the arc-shaped blocks abut against the top of the planetary gear shaft, thereby pressing the planetary gear shaft and improving the stability of the planetary gear shaft positioning. Furthermore, the pressing method can also prevent vertical movement of the planetary gear shaft during cutting, thus ensuring the quality of the cutting.

[0022] Furthermore, the curved block is provided with a rubber layer, and the rubber layer is provided with anti-slip texture.

[0023] By using the above configuration, replacing the arc-shaped block with a rubber layer to contact the planetary gear shaft, the friction between the two can be increased, thereby enhancing the positioning effect of the planetary gear shaft and preventing it from rotating. Furthermore, the anti-slip texture can further enhance the friction between the rubber layer and the planetary gear shaft, further strengthening the positioning effect of the planetary gear shaft.

[0024] Furthermore, the power mechanism includes a worm gear rotatably connected to the groove, a power shaft rotatably connected to the groove, and a driven sprocket coaxially connected to the round shaft. A belt is sleeved between the worm gear and the vertical screw. A driving sprocket and a worm wheel are coaxially connected on the power shaft. A chain is sleeved between the driving sprocket and the driven sprocket. The worm wheel meshes with the worm gear.

[0025] With the above configuration, during the rotation of the vertical screw, the vertical screw drives the worm to rotate via the belt. The worm meshes with the worm wheel, causing the worm wheel to rotate. The worm wheel drives the power shaft to rotate, and the power shaft drives the drive sprocket to rotate. The drive sprocket drives multiple driven sprockets to rotate simultaneously via the chain, thereby driving multiple round shafts to rotate simultaneously. Attached Figure Description

[0026] Figure 1 This is a front view of an embodiment of a planetary gear shaft machining apparatus according to the present invention;

[0027] Figure 2 for Figure 1 A partial sectional view from the front view direction;

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 for Figure 3 Enlarged view at point B in the middle;

[0030] Figure 5 for Figure 1 Top view;

[0031] Figure 6 for Figure 5 A cross-sectional view along the CC direction;

[0032] Figure 7 for Figure 6 Enlarged view of point D in the middle. Detailed Implementation

[0033] The following detailed description illustrates the specific implementation method:

[0034] The reference numerals in the accompanying drawings include: base 10, upright block 11, top seat 12, cylinder 13, movable block 14, cutting blade 15, vertical screw 20, guide rod 21, lifting block 22, positioning block 23, inclined surface 24, second motor 25, wedge surface 26, guide groove 30, chamber 31, fixing block 32, top groove 33, wedge block 34, first spring 35, rotating shaft 40, threaded section 41, clamping block 42, second driving bevel gear 43, second driven bevel gear 44, vertical groove 50, pressure block 51, auxiliary groove 52, one-way screw 53, guide column 54, first driven bevel gear 55, first driving bevel gear 56, side block 57, groove 60, round shaft 61, arc block 62, power shaft 63, worm gear 64, driven sprocket 65, driving sprocket 66, worm gear 67, chain 68, belt 69, planetary gear shaft 70.

[0035] Example

[0036] The basics are as follows: Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 Appendix Figure 6 Appendix Figure 7 As shown: A planetary gear shaft processing device includes a base 10, on which a cutting mechanism for simultaneously cutting multiple planetary gear shafts 70 is provided. The cutting mechanism includes several cutting parts and upright blocks 11 fixedly connected to both sides of the surface of the base 10. A top seat 12 is fixedly connected between two upright blocks 11. The several cutting parts are equidistantly arranged along the length direction of the top seat 12. The cutting part includes a cylinder 13. A movable block 14 is fixedly connected to the output shaft of the cylinder 13. The movable block 14 moves in the vertical direction. A first motor is fixedly connected to the movable block 14. The first motor is a servo motor. A cutting blade 15 is fixedly connected to the output shaft of the first motor.

[0037] A vertical screw 20 is rotatably connected to the right side of the surface of the base 10, and a guide rod 21 is fixedly connected to the left side of the surface of the base 10. A lifting block 22 is threadedly connected to the vertical screw 20. The lifting block 22 is slidably connected to the guide rod 21 and moves in the vertical direction. Several positioning parts are equidistantly arranged on the lifting block 22 along its length. The positioning parts include positioning blocks 23 symmetrically fixed on the lifting block 22. The positioning blocks 23 are provided with inclined surfaces 24 for abutting against the planetary gear shaft 70. The two inclined surfaces 24 of the positioning parts are arranged opposite to each other, and the distance between the two inclined surfaces 24 of the positioning parts gradually increases from top to bottom. It also includes a drive mechanism for driving the vertical screw 20 to rotate. The drive mechanism is a second motor 25. The second motor 25 is a servo motor. The output shaft of the second motor 25 is coaxially connected to the vertical screw 20.

[0038] The surface of the base 10 is provided with several grooves at equal intervals along the length of the base 10. The grooves include guide grooves 30 that are symmetrically and vertically opened on the surface of the base 10. The positioning block 23 is located in the guide groove 30 and can move vertically within the guide groove 30. The positioning block 23 is provided with a wedge surface 26, and the wedge surface 26 and the inclined surface 24 are respectively located on both sides of the positioning block 23. The base 10 has a cavity 31 that communicates with the guide groove 30, and the positioning block 23 can move within the cavity 31. The cavity 31 is provided with several limiting parts at equal intervals along the length of the cavity 31. The limiting parts include a fixing block 32 that is fixed to the cavity 31 and a top groove 33 located on both sides of the surface of the fixing block 32. A wedge block 34 that abuts against the wedge surface 26 is slidably connected in the top groove 33. A first spring 35 is fixed between the wedge block 34 and the top groove 33. The two wedge blocks 34 of the limiting parts move in opposite directions.

[0039] A rotating shaft 40 is rotatably connected to the base 10. The rotating shaft 40 is arranged horizontally and extends into the cavity 31. Several reinforcing parts are equidistantly arranged along the axial direction of the rotating shaft 40. The reinforcing parts include threaded sections 41 symmetrically arranged on the rotating shaft 40. Clamping blocks 42 for abutting against wedges 34 are threadedly connected to the threaded sections 41. The clamping blocks 42 are slidably connected to the cavity 31. The two clamping blocks 42 of the reinforcing parts move in opposite directions. It also includes a linkage part that drives the rotating shaft 40 to rotate with the vertical screw 20. The linkage part includes a second driving bevel gear 43 fixedly connected to the vertical screw 20 and a second driven bevel gear 44 coaxially connected to the rotating shaft 40. The second driving bevel gear 43 and the second driven bevel gear 44 mesh.

[0040] A plurality of vertical slots 50 are equidistantly spaced along the length of the chamber 31. The vertical slots 50 are located between two guide slots 30 of the slot group. A pressure block 51 is slidably connected inside the vertical slot 50. Auxiliary slots 52 are provided on both sides of the vertical slot 50. A one-way screw 53 is rotatably connected to the fixed block 32. A guide post 54 is fixedly connected to the fixed block 32. Both the one-way screw 53 and the guide post 54 extend into the vertical slot 50. The pressure block 51 is threadedly connected to the one-way screw 53. The pressure block 51 and the guide post 54 slide together. The connection includes a first driven bevel gear 55 fixedly connected to a one-way screw 53; a plurality of first driving bevel gears 56 are equidistantly arranged on the rotating shaft 40 along the axial direction of the rotating shaft 40, and the first driving bevel gears 56 mesh with the first driven bevel gears 55; a side block 57 is fixedly connected to the inclined surface 24, and the side block 57 extends into the vertical groove 50 through the auxiliary groove 52. The side block 57 can move vertically in the vertical groove 50, that is, there are side blocks 57 on both sides of the pressure block 51, and the bottom of the pressure block 51 abuts against the top of the two side blocks 57.

[0041] The base 10 has a groove 60 on its surface. Viewed from above, the groove 60 is located behind the chamber 31. Several round shafts 61 are equidistantly rotatably connected within the groove 60 along its length. Arc-shaped blocks 62 for pressing the planetary gear shaft 70 are fixed to the round shafts 61. The base 10 also includes a power mechanism for driving the round shafts 61 to rotate simultaneously. The power mechanism includes a worm gear 64 rotatably connected to the groove 60, a power shaft 63 rotatably connected to the groove 60, and a driven sprocket 65 coaxially connected to the round shafts 61. A belt 69 is sleeved between the worm gear 64 and the vertical screw 20. A drive sprocket 66 and a worm gear 67 are coaxially connected to the power shaft 63. A chain 68 is sleeved between the drive sprocket 66 and the driven sprocket 65. The worm gear 67 meshes with the worm gear 64.

[0042] The specific implementation process is as follows:

[0043] In use, multiple planetary gear shafts 70 are placed one by one on the base 10, so that the planetary gear shafts 70 are located between the two positioning blocks 23 of the positioning part.

[0044] The output shaft of the second motor 25 drives the vertical screw 20 to rotate, causing the lifting block 22 to move downwards. The lifting block 22 drives the two positioning blocks 23 of the positioning part to move downwards synchronously. As the distance between the two inclined surfaces 24 of the positioning part gradually increases from top to bottom, the two inclined surfaces 24 of the positioning part gradually approach the planetary gear shaft 70. The lifting block 22 continues to move downwards, and the two positioning blocks 23 of the positioning part continue to move downwards. When both inclined surfaces 24 of the positioning part abut against the planetary gear shaft 70, the second motor 25 is turned off, thereby stopping the vertical screw 20, and thus stopping the lifting block 22, that is, stopping the two positioning blocks 23 of the positioning part. Therefore, by using the two positioning blocks 23 of the positioning part to clamp the planetary gear shaft 70, the positioning of the planetary gear shaft 70 can be achieved. Since both inclined surfaces 24 of the positioning part abut against the planetary gear shaft 70, the two inclined surfaces 24 of the positioning part can press the planetary gear shaft 70, thereby enhancing the positioning effect of the planetary gear shaft 70.

[0045] During the downward movement of the two positioning blocks 23 of the positioning part, the positioning blocks 23 move downward within the guide groove 30. Because the wedge surface 26 abuts against the wedge block 34, the wedge block 34 slides within the top groove 33, meaning the two wedge blocks 34 move away from each other, and the first spring 35 is compressed. During the rotation of the vertical screw 20, the vertical screw 20 drives the second driving bevel gear 43 to rotate. The second driving bevel gear 43 meshes with the second driven bevel gear 44, driving the second driven bevel gear 44 to rotate. The second driven bevel gear 44 then drives the rotating shaft 40 to rotate. The movement causes the two clamping blocks 42 of the reinforcing part to move closer together; the rotating shaft 40 continues to rotate, and when the vertical screw 20 stops, the rotating shaft 40 stops, the two clamping blocks 42 of the fastening part stop, and at this time the two clamping blocks 42 of the fixing part abut against the two wedges 34 of the limiting part respectively. The two clamping blocks 42 of the fixing part limit the two wedges 34 of the limiting part, that is, the two positioning blocks 23 of the positioning part can be limited, thereby improving the stability of the positioning of the planetary gear shaft 70 by the two positioning blocks 23 of the positioning part.

[0046] During the downward movement of the two positioning blocks 23 of the positioning part, the positioning blocks 23 move downward in the guide groove 30, and the positioning blocks 23 drive the side blocks 57 to move downward synchronously along the auxiliary groove 52, so that the side blocks 57 move into the chamber 31. During the rotation of the shaft 40, the shaft 40 also drives the first driving bevel gear 56 to rotate. The first driving bevel gear 56 meshes with the first driven bevel gear 55, driving the first driven bevel gear 55 to rotate. The first driven bevel gear 55 drives the one-way screw 53 to rotate, causing the pressure block 51 to move downward into the chamber 31. When the vertical screw 20 stops, the two positioning blocks 23 of the positioning part stop, the side block 57 also stops, the shaft 40 stops, and the pressure block 51 also stops. At this time, the bottom of the pressure block 51 abuts against the top of the two side blocks 57, which can press the two positioning blocks 23 of the positioning part, thereby limiting the two positioning blocks 23 of the positioning part and improving the stability of the positioning of the planetary gear shaft 70 by the two positioning blocks 23 of the positioning part. In addition, the pressing method can also prevent the vertical movement of the planetary gear shaft 70 during cutting, thereby ensuring the quality of cutting.

[0047] During the rotation of the vertical screw 20, the vertical screw 20 drives the worm 64 to rotate via the belt 69. The worm 64 meshes with the worm wheel 67, driving the worm wheel 67 to rotate. The worm wheel 67 drives the drive shaft 63 to rotate. The drive shaft 63 drives the drive sprocket 66 to rotate. The drive sprocket 66 drives multiple driven sprockets 65 to rotate simultaneously via the chain 68, thereby driving multiple round shafts 61 to rotate simultaneously.

[0048] During the rotation of the circular shaft 61, the circular shaft 61 drives the arc-shaped block 62 to rotate synchronously, causing the arc-shaped block 62 to move in the direction of the planetary gear shaft 70. The circular shaft 61 continues to rotate, and when the vertical screw 20 stops, the circular shaft 61 also stops. At this time, the arc-shaped block 62 abuts against the top of the planetary gear shaft 70, which can press the planetary gear shaft 70, thereby improving the stability of the positioning of the planetary gear shaft 70. In addition, the pressing method can also prevent the vertical movement of the planetary gear shaft 70 during cutting, thereby ensuring the quality of cutting.

[0049] After the positioning of multiple planetary gear shafts 70 is completed, the first motor and cylinder 13 are started. The output shaft of the first motor drives the cutting blade 15 to rotate, and the output shaft of the cylinder 13 drives the movable block 14 to move downward, which in turn drives the cutting blade 15 to move downward, thus using the cutting blade 15 to complete the cutting process of the planetary gear shaft 70.

[0050] In this embodiment, a rubber layer is fixed to the arc-shaped block 62, and the rubber layer is provided with anti-slip texture. By having the rubber layer replace the arc-shaped block 62 in contact with the planetary gear shaft 70, the friction between the two can be increased, thereby strengthening the positioning effect of the planetary gear shaft 70 and preventing the planetary gear shaft 70 from rotating. Furthermore, the anti-slip texture can further strengthen the friction between the rubber layer and the planetary gear shaft 70, further strengthening the positioning effect of the planetary gear shaft 70.

[0051] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A machining apparatus for planetary gear shafts, comprising a base, wherein the base is provided with a cutting mechanism for simultaneously cutting multiple planetary gear shafts, characterized in that: A vertical screw is rotatably connected to the base, and a guide rod is fixedly connected to the base. A lifting block is threadedly connected to the vertical screw, and the lifting block is slidably connected to the guide rod. Several positioning parts are equidistantly arranged along the length of the lifting block. Each positioning part includes a positioning block symmetrically fixed to the lifting block, and each positioning block has an inclined surface for abutting against the planetary gear shaft. The two inclined surfaces of the positioning part are arranged opposite each other, and the distance between the two inclined surfaces gradually increases from top to bottom. A drive mechanism for rotating the vertical screw is also included. Several groove groups are equidistantly arranged along the length of the base surface. Each groove group includes guide grooves symmetrically opened on the base surface. The positioning block is located within the guide groove and can move vertically within the guide groove. A wedge surface is provided on the positioning block, and the wedge surface and the inclined surface are respectively positioned... The base has a cavity on both sides of the positioning block, which is connected to the guide groove, allowing the positioning block to move within the cavity. Within the cavity, several limiting parts are equidistantly arranged along its length. Each limiting part includes a fixed block fixed to the cavity and top grooves on both sides of the fixed block's surface. A wedge block, which abuts against the wedge surface, is slidably connected within the top groove, and a first spring is provided between the wedge block and the top groove. A rotating shaft is rotatably connected to the base, extending into the cavity. Several reinforcing parts are equidistantly arranged along the axial direction of the rotating shaft. Each reinforcing part includes a threaded section symmetrically arranged on the rotating shaft, with a clamping block threadedly connected to the threaded section for abutting against the wedge block. The clamping block is slidably connected to the cavity, and the two clamping blocks of the reinforcing part move in opposite directions. The base also includes a linkage part that rotates with the vertical screw, causing the rotating shaft to rotate.

2. The machining apparatus for planetary gear shafts according to claim 1, characterized in that: The chamber has several vertical grooves equidistantly arranged along its length. The vertical grooves are located between two guide grooves of the groove group, and a pressure block is slidably connected in the vertical groove. Auxiliary grooves are provided on both sides of the vertical groove. A one-way screw is rotatably connected to the fixed block, and a guide post is provided on the fixed block. Both the one-way screw and the guide post extend into the vertical groove. The pressure block is threadedly connected to the one-way screw and slidably connected to the guide post. A first driven bevel gear is fixedly connected to the one-way screw. Several first driving bevel gears are equidistantly arranged along the axial direction of the rotating shaft. The first driving bevel gears mesh with the first driven bevel gears. A side block is provided on the inclined surface. The side block extends into the vertical groove through the auxiliary groove and can move vertically in the vertical groove. The bottom of the pressure block abuts against the top of the side block.

3. The machining apparatus for planetary gear shafts according to claim 2, characterized in that: The linkage includes a second driving bevel gear fixedly connected to the vertical screw and a second driven bevel gear coaxially connected to the rotating shaft, wherein the second driving bevel gear meshes with the second driven bevel gear.

4. The machining apparatus for planetary gear shafts according to claim 3, characterized in that: The base has a groove on its surface, and several round shafts are equidistantly connected to the groove along its length. The round shafts are equipped with arc-shaped blocks for pressing the planetary gear shafts. It also includes a power mechanism for driving the several round shafts to rotate simultaneously.

5. The machining apparatus for planetary gear shafts according to claim 4, characterized in that: The curved block has a rubber layer with anti-slip texture.

6. The machining apparatus for planetary gear shafts according to claim 5, characterized in that: The power mechanism includes a worm gear rotatably connected to the groove, a power shaft rotatably connected to the groove, and a driven sprocket coaxially connected to the round shaft. A belt is sleeved between the worm gear and the vertical screw. A driving sprocket and a worm wheel are coaxially connected on the power shaft. A chain is sleeved between the driving sprocket and the driven sprocket. The worm wheel meshes with the worm gear.

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