A clamping device for polishing a tappet

Abstract

A tappet polishing clamping device relates to the field of part polishing, including: support seat, clamping mechanism, feeding mechanism, polishing mechanism. The clamping mechanism includes a rotating ring table installed on the top surface of the support seat, the inner wall of the ring table is provided with an annular groove, a plurality of support rods are arranged in the circumferential direction in the groove, one end of each support rod penetrates through the outer wall of the ring table and rotates around its own axis, and the support rods move along the radius direction of the ring table and are used for clamping the tappet; the feeding mechanism is arranged on the side surface of the support seat and includes a bearing plate that moves in the vertical direction and is used for bearing the tappet, two limit plates that are symmetrically arranged and move towards each other are arranged on the bearing plate and are used for limiting the side surface of the tappet, and a push plate that moves along the length direction of the limit plate is further arranged between the limit plates and is used for pushing the tappet onto the support rod; the polishing mechanism includes a plurality of polishing devices that are arranged at intervals in the circumferential direction of the support seat and are used for polishing the surface of the tappet. The inner wall of the tappet is clamped through interference fit, and the polishing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of parts grinding technology, and in particular to a clamping device for grinding pushrods. Background Technology

[0002] Tappets are the followers of a camshaft, their function being to transmit motion and force from the camshaft to the pushrod or valve. They also bear the lateral forces applied by the camshaft and transmit them to the vehicle body or cylinder head. Because tappets operate in an environment requiring repeated friction, nitriding or carburizing treatments are necessary to improve the wear resistance of their end faces. This requires repeated polishing to reduce surface roughness and improve wear resistance. Current tappet end face polishing processes often involve multiple polishing operations, ultimately achieving a mirror finish.

[0003] However, existing tappet grinding and polishing devices typically clamp the outer wall of the tappet, resulting in unstable tappet clamping and potential scratches on the outer wall. During the grinding and polishing process, the tappet often falls off as the grinding wheel rotates, affecting the grinding effect on the tappet end face. Traditional tappet grinding methods usually require fixing the tappet on a worktable and then repeatedly grinding to achieve the desired surface roughness. Although this ensures more stable tappet clamping, it requires transferring the tappet to a higher precision grinding device, resulting in relatively low efficiency. Summary of the Invention

[0004] In view of the shortcomings of the above-mentioned prior art, this application provides a clamping device for grinding a tappet, which clamps the inner wall of the tappet through an interference fit and improves grinding efficiency, and has strong practicality.

[0005] To achieve the above objectives, the present invention employs the following techniques: A clamping device for grinding a push rod includes: a support base, a clamping mechanism, a feeding mechanism, and a grinding mechanism.

[0006] The clamping mechanism includes a ring platform rotatably mounted on the top surface of the support base. The inner wall of the ring platform has an annular groove. Multiple support rods, each with one end extending out of the outer wall of the ring platform and rotating around their own axis, are arranged circumferentially within the groove. The support rods move along the radius of the ring platform to clamp the pusher. The feeding mechanism is located on the side of the support base and includes a bearing plate that moves vertically to support the pusher. The bearing plate has two symmetrically arranged and opposing limiting plates for limiting the side of the pusher. A push plate that moves along the length of the limiting plates is also provided between the limiting plates to push the pusher onto the support rod. The grinding mechanism includes multiple grinding devices arranged at intervals along the circumference of the support base for grinding the surface of the pusher.

[0007] Furthermore, the bottom surface of the ring platform is provided with a gear ring, which meshes with an intermittent gear. The intermittent gear is sleeved on the first transmission shaft, which is rotatably mounted on the support base and connected to the output end of the power output device. The top surface of the support base is also provided with a support ring, and the top surface of the support ring is provided with a limiting groove with an inverted T-shaped cross section along the circumferential direction. The bottom surface of the ring platform is provided with multiple T-shaped blocks, which slide in the limiting groove.

[0008] Furthermore, the side of the ring platform has multiple through holes along the circumferential direction, and a rotating shaft is rotatably installed in the through holes. The outer wall of the rotating shaft is provided with a bevel gear, which meshes with the gear disk. A vertical rod is provided at the center of the support base, and the gear disk is rotatably installed on the vertical rod. A connecting ring is also provided at the center of the gear disk, and the connecting ring also passes through the vertical rod. A driven gear is provided on the outside of the connecting ring, and the driven gear meshes with the driving gear. The driving gear is sleeved on the second transmission shaft, which is rotatably installed on the support base and connected to the output end of the rotating motor. The rotating motor is installed on the support base, and the inner wall of the rotating shaft is hollow along its axial direction. A support rod passes through the rotating shaft.

[0009] Furthermore, the inner wall of the shaft is provided with multiple keyways that pass through both ends along the circumferential direction, and the side of the support rod is provided with multiple rows of key pins along the circumferential direction, with multiple key pins in each row. The key pins slide in the keyways. The inner wall of the shaft is also provided with multiple evenly spaced first annular grooves along its axial direction. The outer diameter of the first annular groove is larger than the outer diameter of the keyway, and the width of the first annular groove is greater than twice the length of the key pin. When the key pin is in the keyway, the support rod can rotate with the shaft. When the key pin is in the first annular groove, the support rod no longer rotates with the shaft.

[0010] Furthermore, the vertical rod is also equipped with a bracket, on which a limiting ring is installed. The limiting ring is located in a groove and is divided into two sections, with the outer diameter of one section being larger than that of the other section. The two sections of the limiting ring are smoothly connected. One end of the support rod located in the groove is equipped with a ball bearing, which abuts against the side of the limiting ring. When the ball bearing contacts the section of the limiting ring with a smaller outer diameter, the key pin is located in the keyway. When the ball bearing contacts the section of the limiting ring with a larger outer diameter, the key pin is located in the first ring groove. One end of the support rod located in the groove is also equipped with a retaining ring, and a first spring is sleeved on the support rod. The two ends of the first spring abut against the retaining ring and the rotating shaft respectively, and are always in a compressed state.

[0011] Furthermore, a convex ring is provided at the outer end of the through hole. Multiple positioning rods are provided inside the convex ring along the circumferential direction. The two ends of the positioning rods pass through the side plates, which are mounted on the support rods. The positioning rods are all mounted on the ring plate, which is located between the two side plates. A second spring is also sleeved on the positioning rod. The two ends of the second spring abut against the ring plate and the side plate closer to the center of the ring platform, respectively, and are always in a compressed state. A retaining ring is provided at the end of the convex ring. The side of the retaining ring facing the center of the ring platform has multiple positioning grooves along the circumferential direction. In application, the positioning rods pass through the positioning grooves.

[0012] Furthermore, a second annular groove is provided on one side of the support rod, and a rubber ring is provided in the second annular groove. The outer diameter of the rubber ring is larger than the outer diameter of the support rod.

[0013] Furthermore, the bearing plate is sleeved on four screws, which are mounted on the support plate. Two nuts are also sleeved on the screws, located on the upper and lower sides of the bearing plate respectively, for locking the bearing plate.

[0014] Furthermore, a conveying track is provided above the limiting plate. The conveying track includes a horizontal section and an inclined section. The length direction of the horizontal section is perpendicular to the moving direction of the push plate, and the end of the horizontal section is provided with a through groove that runs vertically through the plate. The length of the through groove is not less than the distance between the two limiting plates, which is used to pass through the push column. The projections of the horizontal section and the inclined section on the horizontal plane are perpendicular to each other and are connected by a transition section. The upper end of the inclined section is connected to the feed plate. The side of the inclined section away from the feed plate is lower than the other side, and the side of the horizontal section away from the support is lower than the other side.

[0015] Furthermore, the feed tray has an outlet on its side, and a protrusion at the outlet. One end of the protrusion is connected to the upper end of the inclined section, and the side away from the feed tray is inclined downward. Both sides of the protrusion are provided with partitions, and the distance between the two partitions is adjustable. The feed tray has a rotating disk that rotates around its own axis. Above the rotating disk, along its diameter, there are multiple baffles. The baffles are inclined, and the inclination direction is the same as the outlet direction.

[0016] The beneficial effects of this invention are as follows: A rubber ring is installed on the support rod, allowing the inner wall of the tappet to fit the rubber ring with an interference fit, thus clamping the tappet and preventing scratches on the outer wall of the tappet. This also prevents the tappet from falling off during grinding, ensuring product quality. Multiple support rods are installed, allowing them to move circumferentially and rotate around their own axis. This allows the tappet to complete the grinding operation after rotating one revolution around the support base, improving grinding efficiency. After rotating a certain angle around the support base, the support rod can move outward a certain distance and stop rotating, facilitating the removal of the tappet from the support rod. Furthermore, a feeding mechanism continuously places tappets onto the support rods, further improving grinding efficiency. Attached Figure Description

[0017] The accompanying drawings described herein are merely illustrative of selected embodiments, not all possible implementations, and are not intended to limit the scope of the invention.

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall structure of an embodiment of this application.

[0019] Figure 2 This is a three-dimensional cross-sectional view of the clamping mechanism according to an embodiment of this application.

[0020] Figure 3 This is a three-dimensional cross-sectional view of the clamping mechanism according to an embodiment of this application.

[0021] Figure 4 for Figure 3 Enlarged diagram of point A.

[0022] Figure 5 for Figure 4 Enlarged diagram of point B.

[0023] Figure 6 This is a schematic diagram of the assembly of the rotating shaft and the support rod according to an embodiment of this application.

[0024] Figure 7 This is a three-dimensional schematic diagram of the feeding mechanism according to an embodiment of this application.

[0025] Explanation of reference numerals in the attached drawings: 100—Support base, 200—Clamping mechanism, 300—Feeding mechanism, 400—Grinding mechanism, 101—Support ring, 102—Limiting groove, 103—Vertical rod, 104—Bracket, 105—Limiting ring, 201—Ring platform, 202—Groove, 203—Support rod, 204—Gear ring, 205—Intermittent gear, 206—First transmission shaft, 207—T-block, 208—Through hole, 209—Rotating shaft, 210—Bevel gear, 211—Gear disc, 212—Connecting ring, 213—Driven gear, 214—Driving gear, 215—Second transmission shaft, 216 217 - Keyway, 218 - First ring groove, 219 - Ball bearing, 220 - Retaining ring, 221 - First spring, 222 - Protruding ring, 223 - Positioning rod, 224 - Side plate, 225 - Ring plate, 226 - Second spring, 227 - Retaining ring, 228 - Positioning groove, 229 - Second ring groove, 230 - Rubber ring, 301 - Bearing plate, 302 - Limiting plate, 303 - Push plate, 304 - Screw, 305 - Support plate, 306 - Conveying track, 307 - Feeding tray, 308 - Through groove, 309 - Protrusion, 310 - Partition, 311 - Rotating disk, 312 - Baffle. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the implementation methods of the present invention will be described in detail below with reference to the accompanying drawings. However, the embodiments described in this invention are only some embodiments of the present invention, and not all embodiments.

[0027] like Figures 1-7 As shown in the figure, this application provides a clamping device for grinding a tappet, including: a support base 100, a clamping mechanism 200, a feeding mechanism 300, and a grinding mechanism 400.

[0028] The clamping mechanism 200 includes an annular platform 201 rotatably mounted on the top surface of the support base 100. The inner wall of the annular platform 201 is provided with an annular groove 202. Multiple support rods 203, one end of which protrudes from the outer wall of the annular platform 201 and rotates around their own axis, are provided in the groove 202 along the circumferential direction. The support rods 203 move along the radial direction of the annular platform 201. In use, the inner wall of the pusher is clamped on the support rods 203. The feeding mechanism 300 is provided on the side of the support base 100 and includes a bearing plate 301 that moves in the vertical direction to support the pusher. The bearing plate 301 is provided with two symmetrically arranged and opposing limiting plates 302 for limiting the side of the pusher. A push plate 303 that moves along the length direction between the limiting plates 302 is also provided for pushing the pusher onto the support rods 203. The grinding mechanism 400 includes multiple grinding devices that are spaced apart along the circumferential direction of the support base 100 for grinding the surface of the pusher.

[0029] Specifically, the bottom surface of the ring platform 201 is provided with a gear ring 204, which meshes with an intermittent gear 205. The intermittent gear 205 is sleeved on a first drive shaft 206, which is rotatably mounted on a support base 100 and connected to the output end of a power output device. When the power output device drives the first drive shaft 206 to rotate, the intermittent gear 205 also rotates, which in turn drives the gear ring 204 to rotate, thus causing the ring platform 201 to start rotating. When the part of the intermittent gear 205 without teeth rotates to one side of the gear ring 204, the intermittent gear 205 and the gear ring 204 disengage, and the ring platform 201 stops rotating. At this time, the support rod 203 will extend outward from the ring platform 201 to facilitate the removal of the pusher on the support rod 203, and the feeding mechanism 300 will push the pusher onto another support rod 203. After the two operations are completed, the ring platform 201 will continue to rotate. The top surface of the support base 100 is also provided with a support ring 101. The top surface of the support ring 101 is provided with a limiting groove 102 with an inverted T-shaped cross section along the circumferential direction. The bottom surface of the ring platform 201 is provided with multiple T-shaped blocks 207. The T-shaped blocks 207 are slidably engaged in the limiting groove 102. When the ring platform 201 rotates, the rotation direction of the ring platform 201 is limited to ensure that the ring platform 201 rotates more stably.

[0030] Specifically, the side of the ring platform 201 has multiple through holes 208 along the circumferential direction. A rotating shaft 209 is rotatably installed in the through holes 208, allowing the rotating shaft 209 to move in a circular motion with the ring platform 201. A bevel gear 210 is provided on the outer wall of the rotating shaft 209, which meshes with a gear disk 211. A vertical rod 103 is provided at the center of the support base 100, and the gear disk 211 is rotatably installed on the vertical rod 103. A connecting ring 212 is also provided at the center of the gear disk 211, which also passes through the vertical rod 103. A driven gear 213 is provided on the outer side of the connecting ring 212, which meshes with a driving gear 214. The driving gear 214 is sleeved on a second transmission shaft 215. 215 is rotatably mounted on the support base 100 and connected to the output end of the rotary motor. The rotary motor is mounted on the support base 100. When the rotary motor drives the second transmission shaft 25 to rotate, the drive gear 214 rotates, thereby driving the gear disk 211 to rotate under the meshing of the driven gear 213, which in turn drives the rotating shaft 209 to rotate around its own axis. The inner wall of the rotating shaft 209 is hollow along its axial direction, and the support rod 203 is inserted through the rotating shaft 209. When the rotating shaft 209 rotates, it can drive the support rod 203 to rotate around its own axis as well. Thus, when the support rod 203 is moved into the grinding equipment, the support rod 203 can also maintain rotation, thereby completing the grinding operation of the tappet.

[0031] Specifically, to facilitate the removal of the pushers from the support rod 203 and to facilitate the feeding mechanism 300 pushing the pushers onto the support rod 203, it is necessary to stop the rotation of part of the support rod 203. Therefore, multiple keyways 216 with both ends penetrating are provided on the inner wall of the rotating shaft 209 along the circumferential direction, and multiple rows of key pins 217 are provided on the side of the support rod 203 along the circumferential direction, with multiple key pins 217 in each row. The key pins 217 slide in the keyways 216, and the inner wall of the rotating shaft 209 along the keyways 216 slides in the keyways 216. The axis is also provided with a plurality of evenly spaced first annular grooves 218. The outer diameter of the first annular groove 218 is larger than the outer diameter of the keyway 216. When the key pin 217 is in the keyway 216, the support rod 203 can rotate with the rotating shaft 209. When the support rod 203 moves to the outside of the ring platform 201 under the action of external force, and the key pin 217 is in the first annular groove 218, the support rod 203 no longer rotates with the rotating shaft 209. At this time, it is convenient to remove the tappet and load the material.

[0032] Specifically, to ensure that the support rod 203 can automatically move outward when it moves to a certain position following the ring platform 201, a bracket 104 is also provided on the vertical rod 103. A limit ring 105 is installed on the bracket 104. The limit ring 105 is located in the groove 202 and is divided into two sections, with the outer diameter of one section being larger than the outer diameter of the other section. The two sections of the limit ring 105 are smoothly connected. A ball bearing 219 is provided at one end of the support rod 203 located in the groove 202. The ball bearing 219 abuts against the side of the limit ring 105, which can reduce the friction between the support rod 203 and the limit ring 105 during the movement. A retaining ring 220 is also provided at one end of the support rod 203 located in the groove 202. A first spring 221 is sleeved on the support rod 203. The two ends of the first spring 221 abut against the retaining ring 220 and the rotating shaft 209 respectively, and are always in a compressed state. When the ball bearing 219 abuts against the limit ring... When the smaller outer diameter section of the retaining ring 105 contacts, the key pin 217 is located in the keyway 216, the bevel gear 210 and the gear disk 211 remain engaged, and the support rod 203 rotates around its own axis. When the ball 219 contacts the larger outer diameter section of the retaining ring 105, the key pin 217 is located in the first annular groove 218, the bevel gear 210 and the gear disk 211 disengage, the support rod 203 no longer rotates around its own axis, and the first spring 221 is further compressed. As the support rod 203 continues to move with the ring platform 201, the ball 219 will disengage from the larger outer diameter section of the retaining ring 105 again, and under the action of the first spring 221, the support rod 203 will move towards the center of the ring platform 201, so that the ball 219 contacts the smaller outer diameter section of the retaining ring 105, and the bevel gear 210 and the gear disk 211 re-engage, allowing the support rod 203 to rotate again.

[0033] Specifically, when the key pin 217 is located in the first annular groove 218, the support rod 203 will continue to rotate at a certain angle due to its own inertia, and there will still be friction between the inner wall of the rotating shaft 209 and the outer wall of the support rod 203, as well as friction between the end of the first spring 221 and the rotating shaft 209. At this time, the rotating shaft 209 has not stopped rotating, so the support rod 203 may continue to rotate under the influence of friction. Therefore, the width of the first annular groove 218 is set to be greater than that of the key pin 217. The length is twice that of the key pin 217, causing it to disengage from the inner wall of the rotating shaft 209. At this point, only the end of the first spring 221 has friction with the rotating shaft 209. Furthermore, a convex ring 222 is provided at the outer end of the through hole 208. Multiple positioning rods 223 are arranged circumferentially inside the convex ring 222. The two ends of the positioning rods 223 pass through the side plates 224, which are mounted on the support rod 203. All positioning rods 223 are mounted on the ring plate 225, which is located between the two side plates 224. A second spring 226 is also fitted onto the positioning rod 223. The two ends of the second spring 226 abut against the ring plate 225 and the side plate 224 closer to the center of the ring platform 201, respectively, and are always in a compressed state. A retaining ring 227 is provided at the end of the convex ring 222. The side of the retaining ring 227 facing the center of the ring platform 201 has multiple positioning grooves 228 along the circumferential direction. Since the support rod 203 rotates with the rotating shaft 209, the positions of the positioning rod 223 and the positioning grooves 228 will not always remain aligned. Therefore, on the support rod... After moving outward by the length of two key pins 217, if the positioning rod 223 and the positioning groove 228 are not aligned, the positioning rod 223 will abut against the retaining ring 227 and force the second spring 226 to be further compressed. Driven by the friction between the end of the first spring 221 and the rotating shaft 209, the support rod 203 continues to rotate at a certain angle, and the positioning rod 223 will enter the positioning groove 228 under the elastic force of the second spring 226. At this time, the support rod 203 will completely stop rotating.

[0034] Specifically, a second annular groove 229 is provided on one side of the support rod 203, and a rubber ring 230 is provided in the second annular groove 229. The outer diameter of the rubber ring 230 is larger than the outer diameter of the support rod 203. When the tappet is pushed onto the support rod 203, the rubber ring 230 and the inner wall of the tappet achieve an interference fit, thereby realizing the load-bearing of the tappet. The rubber ring 230 can be replaced to adapt to tappets of different sizes.

[0035] Specifically, the bearing plate 301 is sleeved on four screws 304, which are installed on the support plate 305. Two nuts are also sleeved on the screws 304, which are located on the upper and lower sides of the bearing plate 301 respectively, for locking the bearing plate 301. The height of the bearing plate 301 can be adjusted by rotating the nuts. When different sizes of push rods are placed on the bearing plate 301, the axis of the push rod and the axis of the support rod 203 can be kept on the same straight line, which makes it convenient to push the push rod onto the support rod 203.

[0036] Specifically, the push plate 303 can be connected to the moving end of a horizontal linear mechanism, such as a cylinder.

[0037] Specifically, a conveying track 306 is provided above the limiting plate 302. The conveying track 306 includes a horizontal section and an inclined section. The length direction of the horizontal section is perpendicular to the moving direction of the push plate 303, and the end of the horizontal section is provided with a through groove 308 that runs vertically through the vertical direction. The length of the through groove 308 is not less than the distance between the two limiting plates 302, which is used to allow the pusher to pass through. The two limiting plates 302 can be connected to the moving end of the bidirectional linear mechanism, which can drive the two limiting plates 302 to move towards each other or in opposite directions at the same time, thereby adjusting the distance between the two limiting plates 302 to accommodate pushers of different sizes. The projections of the horizontal section and the inclined section on the horizontal plane are perpendicular to each other and are connected by a transition section. The upper end of the inclined section is connected to the feed plate 307. The side of the inclined section away from the feed plate 307 is lower than the other side, and the side of the horizontal section away from the support base 100 is lower than the other side. Since the weight of one end of the pusher is greater than that of the other end, when the pusher is conveyed by the conveying track 306, it can move continuously towards the through groove 308 by its own gravity, thereby realizing the automatic conveying of the pusher.

[0038] Specifically, to ensure the pusher can be smoothly pushed onto the support rod 203, the pusher's axis should be horizontal. However, when the pusher is placed in the feed tray 307, its axis is vertical, with the heavier end at the top. Therefore, when moving the pusher from the feed tray 307 to the conveyor track 306, the pusher's placement must be adjusted. Thus, an outlet is provided on the side of the feed tray 307, with a protrusion 309 at the outlet. One end of the protrusion 309 is connected to the upper end of the inclined section, and the side away from the feed tray 307 tilts downwards. When the pusher moves from the outlet to the protrusion 309, because the side of the protrusion 309 away from the feed tray 307 tilts downwards, the pusher will also tilt. Therefore, during the process of moving from the protrusion 309 to the conveyor track 306, the pusher will shift under its own weight, causing it to shift from a vertical axis position. The axis is horizontal to ensure the normal operation of subsequent work. Both sides of the protrusion 309 are provided with partitions 310, and the distance between the two partitions 310 is adjustable. The push rod enters the protrusion 309 between the two partitions 310. When the push rod is tilted, the outer partition 310 can also provide support for the push rod to ensure its smooth forward movement. It can also accommodate push rods of different sizes. The feed plate 307 is also provided with a rotating disk 311 that rotates around its own axis. The rotation direction of the rotating disk 311 is towards the opening direction. When the rotating disk 311 rotates, it can force the push rods to move towards the opening. In addition, multiple baffles 312 are provided above the rotating disk 311 along its diameter direction. The baffles 312 are tilted and the tilt direction is the same as the outlet direction, thereby forcing the push rods to move towards the rotating disk 311, so that the push rods can move smoothly from the opening to the protrusion 309.

[0039] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.

Claims

1. A clamping device for grinding pushrods, characterized in that, include: Support base (100); The clamping mechanism (200) includes an annular platform (201) rotatably mounted on the top surface of the support base (100). The inner wall of the annular platform (201) is provided with an annular groove (202). The groove (202) is provided with a plurality of support rods (203) with one end protruding from the outer wall of the annular platform (201) and rotating around its own axis. The support rods (203) move along the radial direction of the annular platform (201) to clamp the push rod. The feeding mechanism (300) is located on the side of the support base (100) and includes a bearing plate (301) that moves in the vertical direction to support the pusher. The bearing plate (301) is provided with two symmetrically arranged and oppositely moving limiting plates (302) for limiting the side of the pusher. A push plate (303) that moves in the length direction is also provided between the limiting plates (302) for pushing the pusher onto the support rod (203). The grinding mechanism (400) includes a plurality of grinding devices arranged at intervals along the circumferential direction of the support (100) for grinding the surface of the pushrod; The side of the ring platform (201) is provided with a plurality of through holes (208) along the circumferential direction. A rotating shaft (209) is rotatably installed in the through holes (208), and the support rod (203) passes through the rotating shaft (209). The inner wall of the rotating shaft (209) is provided with multiple keyways (216) that pass through both ends along the circumferential direction. The side of the support rod (203) is provided with multiple rows of key pins (217) along the circumferential direction, and there are multiple key pins (217) in each row. The key pins (217) are slidably fitted in the keyways (216). The inner wall of the rotating shaft (209) is also provided with multiple evenly spaced first annular grooves (218) along its axial direction. The outer diameter of the first annular groove (218) is larger than the outer diameter of the keyway (216), and the width of the first annular groove (218) is greater than twice the length of the key pin (217). When the key pin (217) is located in the keyway (216), the support rod (203) can rotate with the rotating shaft (209). When the key pin (217) is located in the first annular groove (218), the support rod (203) no longer rotates with the rotating shaft (209). The vertical rod (103) is also provided with a bracket (104), on which a limiting ring (105) is installed. The limiting ring (105) is located in the groove (202) and is divided into two sections, with the outer diameter of one section being larger than that of the other section. The two sections of the limiting ring (105) are smoothly connected. One end of the support rod (203) located in the groove (202) is provided with a ball (219). The ball (219) abuts against the side of the limiting ring (105). When the outer diameter of the ball (219) is smaller than that of the limiting ring (105), the ball (219) can be positioned to support the limiting ring (105). When the ball (219) contacts the first ring groove (216), the key pin (217) is located in the keyway (216). When the ball (219) contacts the larger outer diameter of the limiting ring (105), the key pin (217) is located in the first ring groove (218). The support rod (203) is provided with a retaining ring (220) at one end in the groove (202). A first spring (221) is sleeved on the support rod (203). The two ends of the first spring (221) abut against the retaining ring (220) and the rotating shaft (209) respectively, and are always in a compressed state. The outer end of the through hole (208) is also provided with a convex ring (222). The convex ring (222) is provided with a plurality of positioning rods (223) along the circumferential direction inside. The two ends of the positioning rods (223) are inserted into the side plates (224). The side plates (224) are installed on the support rod (203). The positioning rods (223) are all installed on the ring plate (225). The ring plate (225) is located between the two side plates (224). The positioning rods (223) are also sleeved with... There is a second spring (226), the two ends of which abut against the ring plate (225) and the side plate (224) closer to the center of the ring platform (201) respectively, and are always in a compressed state. The end of the convex ring (222) is provided with a retaining ring (227). The side of the retaining ring (227) facing the center of the ring platform (201) is provided with multiple positioning grooves (228) along the circumferential direction. In application, the positioning rod (223) passes through the positioning groove (228).

2. The clamping device for grinding tappets according to claim 1, characterized in that, The bottom surface of the ring platform (201) is provided with a gear ring (204), which meshes with an intermittent gear (205). The intermittent gear (205) is sleeved on a first transmission shaft (206), which is rotatably mounted on the support base (100) and connected to the output end of the power output device. The top surface of the support base (100) is also provided with a support ring (101), and the top surface of the support ring (101) is provided with a limiting groove (102) with an inverted T-shaped cross section along the circumferential direction. The bottom surface of the ring platform (201) is provided with a plurality of T-shaped blocks (207), which slide in the limiting groove (102).

3. The clamping device for grinding tappets according to claim 1, characterized in that, The outer wall of the rotating shaft (209) is provided with a bevel gear (210), which meshes with the gear disk (211). The support base (100) is provided with a vertical rod (103) at its center. The gear disk (211) is rotatably mounted on the vertical rod (103). The center of the gear disk (211) is also provided with a connecting ring (212), which also passes through the vertical rod (103). A driven gear (213) is provided on the outer side of the connecting ring (212), which meshes with the driving gear (214). The driving gear (214) is sleeved on the second transmission shaft (215), which is rotatably mounted on the support base (100) and connected to the output end of the rotating motor. The rotating motor is mounted on the support base (100). The inner wall of the rotating shaft (209) is hollow along its axial direction.

4. The clamping device for grinding tappets according to claim 1, characterized in that, The support rod (203) has a second annular groove (229) on one side, and a rubber ring (230) is provided in the second annular groove (229). The outer diameter of the rubber ring (230) is larger than the outer diameter of the support rod (203).

5. The clamping device for grinding tappets according to claim 1, characterized in that, The bearing plate (301) is sleeved on four screws (304), the screws (304) are installed on the support plate (305), and two nuts are also sleeved on the screws (304). The nuts are located on the upper and lower sides of the bearing plate (301) respectively, and are used to lock the bearing plate (301).

6. The clamping device for grinding tappets according to claim 1, characterized in that, Above the limiting plate (302) is a conveying track (306), which includes a horizontal section and an inclined section. The length direction of the horizontal section is perpendicular to the moving direction of the push plate (303), and the end of the horizontal section is provided with a through groove (308) that runs vertically through the vertical. The length of the through groove (308) is not less than the distance between the two limiting plates (302) for the passage of the pusher. The projections of the horizontal section and the inclined section on the horizontal plane are perpendicular to each other and are connected by a transition section. The upper end of the inclined section is connected to the feed plate (307). The side of the inclined section away from the feed plate (307) is lower than the other side, and the side of the horizontal section away from the support base (100) is lower than the other side.

7. The clamping device for grinding tappets according to claim 6, characterized in that, The feed tray (307) has an outlet on its side, and a protrusion (309) is provided at the outlet. One end of the protrusion (309) is connected to the upper end of the inclined section, and the side away from the feed tray (307) is inclined downward. Both sides of the protrusion (309) are provided with partitions (310), and the distance between the two partitions (310) is adjustable. The feed tray (307) is provided with a rotating disk (311) that rotates around its own axis. Above the rotating disk (311) along its diameter direction, there are also multiple baffles (312). The baffles (312) are inclined, and the inclination direction is the same as the outlet direction.

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