A chamfering device for piston pins and its processing method

Abstract

The present invention provides a piston pin chamfering processing device and a processing method thereof, which relates to the technical field of chamfering processing. It includes a base, and a flipping mechanism is arranged on the top of the base. The flipping mechanism includes side plates, the side plates are fixedly connected to the base, a support rod is rotatably connected to the inner surface of the side plates through bearings, a telescopic outer cylinder is fixedly connected to the surface of the support rod, a telescopic inner rod is slidably connected to the inner surface of the telescopic outer cylinder, and the other end of the telescopic inner rod is fixedly connected to a connecting rod. The present invention ensures that the position of the piston pin will not shift during the subsequent chamfering processing, thereby greatly improving the chamfering accuracy. And by controlling the meshing length of the rack and the third gear and adjusting the moving distance of the positioning plate, it can accurately and quickly adapt to various size changes without complex manual readjustment or replacement of a large number of components, so that no matter what the size of the piston pin is, the entire clamping process can ensure stability and reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of chamfering processing, and particularly relates to a piston pin chamfering processing device and a processing method thereof. Background Art

[0002] In the field of modern mechanical manufacturing, the piston pin is an important component in key equipment such as engines. The chamfering processing of the piston pin is an indispensable process. In the positioning link, it is difficult for previous devices to accurately fix piston pins of different sizes, and often due to positioning deviation, the chamfering accuracy is poor and the product rejection rate is high. Moreover, for piston pins of different specifications, it is often necessary to manually re-adjust the fixture or replace a large number of components, which is cumbersome and time-consuming, seriously affecting production efficiency. During the loading and unloading process, manual operations are frequent and inefficient, and the loading and unloading time is long, resulting in a slow overall operation rhythm of the equipment and unable to meet the needs of large-scale production. When the cutting blade works continuously for a long time, due to excessive friction, it generates high temperature and its performance drops sharply. This not only shortens the service life of the cutting blade, increases the tool replacement cost, but also the frequent replacement of the cutting blade leads to an extended downtime of the equipment and reduces the equipment utilization rate. In addition, if the chips generated during the processing cannot be cleaned in time, they are very likely to accumulate in the working area, interfering with the subsequent processing process, affecting the processing accuracy of the piston pin, and even may enter the equipment interior, causing equipment failures and increasing the equipment maintenance cost. Therefore, we propose a piston pin chamfering processing device and a processing method thereof. Summary of the Invention

[0003] The purpose of the present invention is to solve the above problems, and propose a piston pin chamfering processing device and a processing method thereof.

[0004] To achieve the above purpose, the present invention adopts the following technical solution: A piston pin chamfering processing device includes a base. A flipping mechanism is arranged on the top of the base. The flipping mechanism includes side plates. The side plates are fixedly connected to the base. The inner surface of the side plates is rotatably connected to a support rod through bearings. A telescopic outer cylinder is fixedly connected to the surface of the support rod. A telescopic inner rod is slidably connected to the inner surface of the telescopic outer cylinder. The other end of the telescopic inner rod is fixedly connected to a connecting rod. A flipping frame is rotatably connected to the outer surface of the connecting rod. A support frame is fixedly connected to the outer surface of the connecting rod. A positioning frame is fixedly connected to the outer surface of the support frame. A positioning groove is formed on the inner surface of the positioning frame. A positioning cylinder is rotatably connected to the inner surface of the positioning groove. A limiting plate is fixedly connected to the inner surface of the positioning cylinder. A positioning plate is slidably connected to the outer surface of the limiting plate.

[0005] Preferably, a rotating cylinder is rotatably connected to the inner surface of the positioning groove through a bearing. The rotating cylinder is fixedly connected to the positioning cylinder. A control groove is formed on the inner surface of the positioning frame. One end of the rotating cylinder is rotatably connected to the control groove through a bearing. Two first rotating rods are rotatably connected to the inner surface of the control groove through bearings. First gears are fixedly connected to the outer surfaces of the two first rotating rods. A second gear is fixedly connected to the outer surface of the rotating cylinder. The outer surfaces of the two first gears are drivingly connected by a synchronous belt. Multiple teeth that mesh with the first gears and the second gear are fixedly connected to the inner surface of the synchronous belt.

[0006] Preferably, a control mechanism is further provided on the top of the base. The control mechanism includes an electric slide rail. A sliding seat is slidably connected to the outer surface of the electric slide rail. A mounting plate is fixedly connected to the outer surface of the sliding seat. A rack is fixedly connected to the outer surface of the mounting plate. A second rotating rod is rotatably connected to the outer surface of the positioning frame through a bearing. A third gear is fixedly connected to the outer surface of one side of the second rotating rod. The third gear is meshed with the rack. A rotating disk is fixedly connected to the outer surface of the other side of the second rotating rod. A spiral groove is formed on the outer surface of the rotating disk. A limiting block is fixedly connected to the outer surface of the positioning plate. The limiting block is slidably connected to the spiral groove.

[0007] Preferably, the electric slide rail is fixedly installed on the outer surface of the flipping frame. The positioning cylinder is sleeved on the outer surface of the second rotating rod.

[0008] Preferably, a third rotating rod is fixedly connected to the outer surface of the side plate. A rotating plate is fixedly connected to the outer surface of the third rotating rod. A positioning block is fixedly connected to the outer surface of the rotating plate. A sliding groove is formed on the outer surface of the flipping frame. The positioning block is slidably connected to the sliding groove. An arc-shaped rail is fixedly connected to the inner surface of the side plate. The connecting rod is slidably connected to the arc-shaped rail. A first motor is fixedly installed on the surface of the side plate. The output end of the first motor is fixedly connected to the third rotating rod.

[0009] Preferably, a second motor is fixedly installed on the outer surface of the positioning frame. The output end of the second motor is fixedly connected to the first rotating rod.

[0010] Preferably, a replacement mechanism is further provided on the top of the base. The replacement mechanism includes a first spring. The first spring is fixedly connected to the base. The other end of the first spring is fixedly connected to a lifting block. A first connecting plate is rotatably connected to the outer surface of the lifting block through a bearing. The other end of the first connecting plate is rotatably connected to a second connecting plate through a bearing. The other end of the second connecting plate is fixedly connected to an operation plate. Two blades are installed on the top of the operation plate.

[0011] Preferably, a protective cylinder is fixedly connected to the upper surface of the base. A first hose is communicatively arranged on the upper surface of the protective cylinder. The other end of the first hose is fixedly connected to the operation panel. A fixing plate is fixedly connected to the upper surface of the base. An operation cylinder is rotatably connected to the upper surface of the base through a bearing. The fixing plate is slidably connected to the lifting block. A blocking rod is fixedly connected to the outer surface of the fixing plate. The protective cylinder is rotatably connected to the operation cylinder. A slope block is fixedly connected to the upper surface of the operation cylinder. Two push rods are fixedly connected to the lower surface of the operation panel.

[0012] Preferably, a cleaning mechanism is further arranged on the upper surface of the base. The cleaning mechanism includes a second hose, which is communicatively arranged with the telescopic outer cylinder. A first ventilation groove is formed on the surface of the base. A ventilation box is fixedly connected to the outer surface of the base. The other end of the second hose is communicatively connected to the ventilation box. The ventilation box is communicatively connected to the first ventilation groove. A third ventilation groove is communicatively arranged on the outer surface of the first ventilation groove. A fourth ventilation groove is communicatively arranged on the surface of the third ventilation groove. A second ventilation groove is communicatively arranged on the surface of the fourth ventilation groove. A ventilation hole for communicating the second ventilation groove and the operation cylinder is formed on the upper surface of the base. A lifting frame is slidably connected to the inner surface of the third ventilation groove. A connecting block is fixedly connected to the upper surface of the lifting frame. A first inclined groove and a second inclined groove are formed on the outer surface of the operation cylinder. The connecting block is slidably connected to the first inclined groove and the second inclined groove. A cleaning hole is formed on the outer surface of the operation panel. A second spring is fixedly connected between the lifting frame and the third ventilation groove.

[0013] Preferably, a method for chamfering a piston pin includes the following steps:

[0014] S1: Place the piston pin transported from the outside into the positioning groove on the positioning frame. Immediately start the first motor. After the motor runs, drive a series of associated components to operate, and finally complete the positioning and clamping of the piston pin.

[0015] S2: When the positioning frame moves to the vertically downward position, start the second motor. The motor drives the relevant components to cause the piston pin to start rotating and contact the blade during the rotation, thereby achieving the chamfering operation.

[0016] S3: After completing the chamfering process, rotate the flipping frame to rotate the positioning frame upward to reset. At the same time, start the electric slide rail to release the piston pin from the positioning plate. The piston pin falls into the collection groove on the right side of the base by its own gravity.

[0017] S4: When the positioning frame moves downward again to prepare for the next round of chamfering, use the airflow generated by the telescopic inner rod squeezing the air inside the telescopic outer cylinder to drive the relevant components to operate and achieve the alternate use of the two sets of blades.

[0018] S5: As the lifting frame moves upward to a specific position of the fourth ventilation groove, the air flow flows along a predetermined path, sprays upward from the cleaning hole, and cleans the chamfered debris on the surface of the operation board.

[0019] Compared with the prior art, the advantages and positive effects of the present invention are as follows.

[0020] 1. The present invention provides a piston pin chamfering processing device and its processing method. The motor drives the third rotating rod, causing the rotating plate to rotate, driving the positioning block to slide in the chute, and making the flipping frame swing reciprocally. When the flipping frame rotates downward, it pulls the connecting rod, and at the same time drives the support frame to move the positioning frame downward. When the positioning frame moves downward, the second rotating rod moves accordingly. The rack on the mounting plate meshes with the third gear on the second rotating rod. As the positioning frame continues to move downward, the rack drives the third gear to rotate, drives the rotating disk through the second rotating rod, and the rotating disk pushes the limiting block through the spiral groove, causing the limiting plate to drive the positioning plate to clamp the piston pin, which can accurately fix the piston pin at the required position, ensuring that the position of the piston pin does not shift during the subsequent chamfering process, thus greatly improving the chamfering accuracy. And by controlling the meshing length of the rack and the third gear, adjusting the moving distance of the positioning plate, it can accurately and quickly adapt to various size changes, without complex manual re-adjustment or replacement of a large number of components, ensuring that the entire clamping process is stable and reliable regardless of the size of the piston pin.

[0021] 2. The present invention provides a piston pin chamfering processing device and its processing method. When the positioning frame is vertically downward, the second motor is started, driving the first rotating rod and the first gear, driving a plurality of second gears through the synchronous belt, causing the rotating cylinder and the positioning cylinder to rotate, driving the piston pin to rotate through the limiting plate and the positioning plate, and completing the chamfering when contacting the blade. After chamfering, the flipping frame is rotated to move the positioning frame upward to reset. At the same time, the electric slide rail is started, causing the rack on the other side to rotate reversely with the third gear, and the positioning plate releases the piston pin. The piston pin falls into the collection groove on the right side of the base by gravity, and the positioning plate automatically and synchronously switches the clamping and releasing actions of the piston pin, greatly shortening the time required for loading and unloading. The device can quickly complete the unloading of a processed piston pin and quickly load the next piston pin to be processed, improving the overall working efficiency.

[0022] 3. The present invention provides a piston pin chamfering processing device and its processing method. When the positioning frame chamfers downwards, the telescopic inner rod squeezes the air inside the telescopic outer cylinder. The gas enters the ventilation box through the second hose, and then flows into the first and third ventilation grooves in sequence, pushing the lifting frame and the connecting block upwards. The movement of the connecting block drives the operation cylinder and the slope block to rotate. The slope block pushes the push rod, causing the operation plate to swing. The operation plate lifts the other blade, enabling the alternate use of the blades after chamfering a batch of piston pins, extending the blade life. During the continuous processing of piston pins, the single-group blade is prevented from working continuously for a long time, effectively reducing the performance degradation of the blade caused by excessive frictional heat generation, significantly extending the overall service life of the blade, reducing the tool replacement frequency, and lowering the production cost.

[0023] 4. The present invention provides a piston pin chamfering processing device and its processing method. When the lifting frame moves upwards to the fourth ventilation groove, the air flow passes through the fourth and second ventilation grooves in sequence, passes through the ventilation hole into the operation cylinder, and then sprays out from the cleaning hole to clean the chamfer debris on the operation plate. When the positioning frame rotates upwards, the telescopic inner rod moves outwards, and the lifting frame is reset by the second spring, introducing external gas to balance the air pressure, preparing for the next cleaning. Using the air flow to automatically clean the chamfer debris on the surface of the operation plate can continuously keep the working area of the equipment clean. Timely cleaning of the debris can prevent it from generating secondary friction with the blade or the piston pin during the piston pin processing, and avoid the accumulation of debris affecting the subsequent processing accuracy of the piston pin. The lifting frame is reset by the second spring, and the air inlet pipe and the one-way valve maintain the air pressure balance in the ventilation box, ensuring that the cleaning system can work continuously and stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the front view structural schematic diagram of a piston pin chamfering processing device and its processing method proposed by the present invention;

[0025] Figure 2 is the rear view partial structural schematic diagram of a piston pin chamfering processing device and its processing method proposed by the present invention;

[0026] Figure 3 is the internal structural schematic diagram of a piston pin chamfering processing device and its processing method proposed by the present invention;

[0027] Figure 4 is the base partial structural schematic diagram of a piston pin chamfering processing device and its processing method proposed by the present invention;

[0028] Figure 5 is the operation plate partial structural schematic diagram of a piston pin chamfering processing device and its processing method proposed by the present invention;

[0029] Figure 6 is the rotating cylinder partial structural schematic diagram of a piston pin chamfering processing device and its processing method proposed by the present invention;

[0030] Figure 7 This is a schematic diagram of a partial structure of an electric slide rail for a piston pin chamfering processing device and its processing method proposed by the present invention;

[0031] Figure 8 This is a schematic diagram of a partial sectional structure of a positioning groove for a piston pin chamfering processing device and its processing method proposed by the present invention;

[0032] Figure 9 This is a schematic diagram of a partial structure of a rotating disk for a piston pin chamfering processing device and its processing method proposed by the present invention;

[0033] Figure 10 This is for a piston pin chamfering processing device and its processing method proposed by the present invention Figure 4 The partial enlarged structure schematic diagram at position A in

[0034] Legend: 1. Base; 2. Flipping mechanism; 201. Side plate; 202. Support rod; 203. Telescopic outer cylinder; 204. Telescopic inner rod; 205. Connecting rod; 206. Flipping frame; 207. Support frame; 208. Positioning frame; 209. Positioning groove; 210. Positioning cylinder; 211. Limiting plate; 212. Positioning plate; 3. Control mechanism; 301. Electric slide rail; 302. Sliding seat; 303. Mounting plate; 304. Rack; 305. Second rotating rod; 306. Third gear; 307. Rotating disk; 308. Spiral groove; 309. Limiting block; 4. Replacement mechanism; 401. First spring; 402. Lifting block; 403. First connecting plate; 404. Second connecting plate; 405. Operating plate; 406. Blade; 5. Cleaning mechanism; 501. Second hose; 502. First ventilation groove; 503. Second ventilation groove; 504. Third ventilation groove; 505. Ventilation hole; 506. Lifting frame; 507. Connecting block; 509. First inclined groove; 510. Second inclined groove; 511. Ventilation box; 512. Fourth ventilation groove; 513. Cleaning hole; 514. Second spring; 6. Rotating cylinder; 7. Control groove; 8. First rotating rod; 9. First gear; 10. Second gear; 11. Synchronous belt; 12. Teeth; 13. Third rotating rod; 14. Rotating plate; 15. Positioning block; 16. Chute; 17. Arc track; 18. Second motor; 19. Protective cylinder; 20. First hose; 21. Fixed plate; 22. Operating cylinder; 23. Stop bar; 24. Slope block; 25. Push rod; 26. First motor. Detailed implementation manners

[0035] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0036] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways different from those described herein. Therefore, the present invention is not limited by the limitations of the specific embodiments disclosed in the following specification.

[0037] As Figure 1 - Figure 10 shown, a chamfering device for a piston pin includes a base 1. A flipping mechanism 2 is provided on the top of the base 1. The flipping mechanism 2 includes side plates 201. The side plates 201 are fixedly connected to the base 1. A support rod 202 is rotatably connected to the inner surface of the side plates 201 through bearings. A telescopic outer cylinder 203 is fixedly connected to the surface of the support rod 202. A telescopic inner rod 204 is slidably connected to the inner surface of the telescopic outer cylinder 203. The other end of the telescopic inner rod 204 is fixedly connected to a connecting rod 205. A flipping frame 206 is rotatably connected to the outer surface of the connecting rod 205. A support frame 207 is fixedly connected to the outer surface of the connecting rod 205. A positioning frame 208 is fixedly connected to the outer surface of the support frame 207. A positioning groove 209 is provided on the inner surface of the positioning frame 208. A positioning cylinder 210 is rotatably connected to the inner surface of the positioning groove 209. A limiting plate 211 is fixedly connected to the inner surface of the positioning cylinder 210. A positioning plate 212 is slidably connected to the outer surface of the limiting plate 211.

[0038] The effect is that when the flipping frame 206 rotates downward, it drives the connecting rod 205 to move. The connecting rod 205 drives the telescopic inner rod 204 to move into the telescopic outer cylinder 203. At the same time, the telescopic outer cylinder 203 rotates downward. The connecting rod 205 drives the support frame 207 on its surface to rotate downward. The support frame 207 drives the positioning frame 208 to rotate downward. During the downward movement of the positioning frame 208, the positioning frame 208 rotates relative to the flipping frame 206. At this time, the second rotating rod 305 on the positioning frame 208 moves along with the positioning frame 208. At this time, the limiting block 309 slides along the limiting plate 211 towards the middle position. The limiting plate 211 drives the positioning plate 212 to move. At this time, the positioning plate 212 can clamp and position the piston pin.

[0039] As Figure 1 - Figure 10As shown, the inner surface of the positioning groove 209 is rotatably connected to the rotating cylinder 6 through a bearing, and the rotating cylinder 6 is fixedly connected to the positioning cylinder 210. A control groove 7 is opened on the inner surface of the positioning frame 208. One end of the rotating cylinder 6 is rotatably connected to the control groove 7 through a bearing. The inner surface of the control groove 7 is rotatably connected to two first rotating rods 8 through a bearing. The outer surfaces of the two first rotating rods 8 are fixedly connected to the first gear 9. The outer surface of the rotating cylinder 6 is fixedly connected to the second gear 10. The outer surfaces of the two first gears 9 are transmission-connected to the synchronous belt 11. The inner surface of the synchronous belt 11 A plurality of teeth 12 meshing with the first gear 9 and the second gear 10 are fixedly connected, a control mechanism 3 is also provided on the top of the base 1, and the control mechanism 3 includes an electric slide rail 301, the outer surface of the electric slide rail 301 is slidably connected to a sliding seat 302, the outer surface of the sliding seat 302 is fixedly connected to a mounting plate 303, the outer surface of the mounting plate 303 is fixedly connected to a rack 304, the outer surface of the positioning frame 208 is rotatably connected to a second rotating rod 305 through a bearing, the outer surface of one side of the second rotating rod 305 is fixedly connected to a third gear 306, and the third gear The outer surface of the second rotating rod 305 is fixedly connected with a rotating disk 307, and a spiral groove 308 is provided on the outer surface of the rotating disk 307. The outer surface of the positioning plate 212 is fixedly connected with a limiting block 309, and the limiting block 309 is slidably connected with the spiral groove 308. The electric slide rail 301 is fixedly installed on the outer surface of the flip frame 206, and the positioning cylinder 210 is sleeved on the outer surface of the second rotating rod 305. The outer surface of the side plate 201 is fixedly connected with the third rotating rod 13, and the outer surface of the third rotating rod 13 is fixedly connected There is a rotating plate 14, the outer surface of the rotating plate 14 is fixedly connected with a positioning block 15, the outer surface of the flip frame 206 is provided with a slide groove 16, the positioning block 15 is slidably connected to the slide groove 16, the inner surface of the side plate 201 is fixedly connected to the arc rail 17, the connecting rod 205 is slidably connected to the arc rail 17, the surface of the side plate 201 is fixedly installed with a first motor 26, the output end of the first motor 26 is fixedly connected to the third rotating rod 13, the outer surface of the positioning frame 208 is fixedly installed with a second motor 18, and the output end of the second motor 18 is fixedly connected to the first rotating rod 8.

[0040] The effect is that a third gear 306 is fixed on the surface of the second rotating rod 305. An electric slide rail 301 is installed on the turning frame 206. A sliding seat 302 is slidably arranged on the surface of the electric slide rail 301. An installation plate 303 is arranged on the surface of the sliding seat 302. When the electric slide rail 301 is started, the rack 304 above the installation plate 303 contacts the third gear 306. The third gear 306 meshes with the rack 304 on the installation plate 303. During the process of the third gear 306 moving downward along with the positioning frame 208, the rack 304 drives the third gear 306 to rotate, thereby driving the second rotating rod 305 to rotate. The second rotating rod 305 drives the rotating disc 307 on the other side to rotate. The rotating disc 307 drives the spiral groove 308 on its surface to rotate, so that the limiting block 309 inside the spiral groove 308 moves accordingly. At this time, the positioning plate 212 can clamp and position the piston pin. The first rotating rod 8 drives the first gear 9 on its surface to rotate. The first gear 9 drives the synchronous belt 11 to rotate through the teeth 12. The teeth 12 arranged on the inner surface of the synchronous belt 11 drive a plurality of second gears 10 to rotate. The second gears 10 drive the rotating cylinder 6 to rotate. The rotating cylinder 6 drives the positioning cylinder 210 to rotate. The positioning cylinder 210 drives the positioning plate 212 to rotate through the limiting plate 211. At this time, the piston pin inside can be driven to rotate. During the rotation, it contacts the blade 406. At this time, chamfering can be performed. When the chamfering is completed, continue to rotate the turning frame 206 to make the positioning frame 208 rotate upward and reset. At the same time, start the electric slide rail 301 to make the rack 304 on the other side contact the third gear 306 and drive the third gear 306 to rotate reversely, so that the positioning plate 212 leaves the piston pin.

[0041] As Figure 1 - Figure 10 shown, a replacement mechanism 4 is further arranged on the top of the base 1. The replacement mechanism 4 includes a first spring 401. The first spring 401 is fixedly connected with the base 1. The other end of the first spring 401 is fixedly connected with a lifting block 402. The outer surface of the lifting block 402 is rotatably connected with a first connecting plate 403 through a bearing. The other end of the first connecting plate 403 is rotatably connected with a second connecting plate 404 through a bearing. The other end of the second connecting plate 404 is fixedly connected with an operation plate 405. Two blades 406 are installed on the top of the operation plate 405. The upper surface of the base 1 is fixedly connected with a protective cylinder 19. The upper surface of the protective cylinder 19 is communicated with a first hose 20. The other end of the first hose 20 is fixedly connected with the operation plate 405. The upper surface of the base 1 is fixedly connected with a fixing plate 21. The upper surface of the base 1 is rotatably connected with an operation cylinder 22 through a bearing. The fixing plate 21 is slidably connected with the lifting block 402. A blocking rod 23 is fixedly connected to the outer surface of the fixing plate 21. The protective cylinder 19 is rotatably connected with the operation cylinder 22. A slope block 24 is fixedly connected to the upper surface of the operation cylinder 22. Two push rods 25 are fixedly connected to the lower surface of the operation plate 405.

[0042] The effect is that when the positioning frame 208 chamfers downward again, since the telescopic inner rod 204 squeezes the air inside the telescopic outer cylinder 203, the gas inside the telescopic outer cylinder 203 can enter the second hose 501. The gas in the second hose 501 enters the ventilation box 511, the gas in the ventilation box 511 enters the inside of the first ventilation groove 502, the gas inside the first ventilation groove 502 enters the inside of the third ventilation groove 504, and after the gas inside the third ventilation groove 504 enters, it can push the lifting frame 506 to move upward. The lifting frame 506 drives the connecting block 507 to move upward. Since the depth of the bottom end of the first inclined groove 509 is shallower than the depth of the bottom end of the second inclined groove 510, and the depth of the top end of the second inclined groove 510 is shallower than the depth of the top end of the first inclined groove 509, the moving direction of the connecting block 507 is always from the top end of the first inclined groove 509 to the bottom end of the second inclined groove 510, and then from the bottom end of the second inclined groove 510 to the top end of the next first inclined groove 509. When the connecting block 507 moves from the bottom end of the second inclined groove 510 to the top end of the next first inclined groove 509, it can drive the operating cylinder 22 to rotate. The operating cylinder 22 drives the slope block 24 at the top to rotate. When the slope block 24 contacts one of the push rods 25, it will push the push rod 25 to move upward. The push rod 25 drives one end of the operating plate 405 to move upward. At this time, the operating plate 405 swings. A second connecting plate 404 is fixed on the other surface of the operating plate 405. At this time, the second connecting plate 404 swings downward and pushes the first connecting plate 403. Therefore, the other end of the first connecting plate 403 pushes the lifting block 402 to squeeze the first spring 401 and move downward. When one of the push rods 25 leaves the slope block 24, due to the upward elastic force of the first spring 401, the first spring 401 drives the lifting block 402 to move upward. Since the stop rod 23 on the fixed plate 21 can limit the first connecting plate 403, the first connecting plate 403 can abut against the stop rod 23. At this time, the operating plate 405 can lift the blade 406 on one side. When the slope block 24 continues to rotate and contacts another push rod 25, it can drive the first connecting plate 403 to swing towards the stop rod 23 on the other side and drive the other end of the operating plate 405 to lift, and can lift the blade 406 on the other side. After chamfering a batch of piston pins each time, the chamfering blade 406 can be switched.

[0043] As Figure 1 - Figure 10As shown in the figure, a cleaning mechanism 5 is also provided on the upper surface of the base 1. The cleaning mechanism 5 includes a second hose 501, and the second hose 501 is communicated with the telescopic outer cylinder 203. A first ventilation groove 502 is formed on the surface of the base 1, and a ventilation box 511 is fixedly connected to the outer surface of the base 1. The other end of the second hose 501 is communicated with the ventilation box 511, and the ventilation box 511 is communicated with the first ventilation groove 502. A third ventilation groove 504 is communicated with the outer surface of the first ventilation groove 502. A fourth ventilation groove 512 is communicated with the surface of the third ventilation groove 504. A second ventilation groove 503 is communicated with the surface of the fourth ventilation groove 512. A ventilation hole 505 for communicating the second ventilation groove 503 and the operation cylinder 22 is formed on the upper surface of the base 1. A lifting frame 506 is slidably connected to the inner surface of the third ventilation groove 504. A connecting block 507 is fixedly connected to the upper surface of the lifting frame 506. A first inclined groove 509 and a second inclined groove 510 are formed on the outer surface of the operation cylinder 22. The connecting block 507 is slidably connected to the first inclined groove 509 and the second inclined groove 510. A cleaning hole 513 is formed on the outer surface of the operation plate 405. A second spring 514 is fixedly connected between the lifting frame 506 and the third ventilation groove 504.

[0044] The effect is that when the lifting frame 506 moves upward to the position of the fourth ventilation groove 512, air flows into the interior of the fourth ventilation groove 512, and then moves into the interior of the second ventilation groove 503. The gas passes through the ventilation hole 505 along the second ventilation groove 503, enters the interior of the operation cylinder 22, and moves upward along the operation cylinder 22 and sprays upward from the cleaning hole 513. At this time, the chamfer debris on the surface of the operation plate 405 can be cleaned. When the positioning frame 208 rotates upward, at this time, the telescopic inner rod 204 moves outward from the telescopic outer cylinder 203, and the lifting frame 506 is reset through the second spring 514. An air inlet pipe is provided at the bottom of the ventilation box 511, and a one-way valve is provided. At this time, external gas enters the interior of the ventilation box 511 from the air inlet pipe, making the internal and external air pressures balanced, which is convenient for the next cleaning.

[0045] As Figure 1 - Figure 10 shown, a piston pin chamfering method includes the following steps:

[0046] S1: Put the piston pin transported from the outside into the positioning groove 209 on the positioning frame 208. Immediately start the first motor 26. After the motor runs, drive a series of related components to operate, and finally complete the positioning and clamping of the piston pin.

[0047] S2: When the positioning frame 208 moves to the vertically downward position, start the second motor 18. The motor drives the relevant components to cause the piston pin to start rotating and contact the blade 406 during the rotation process, thereby realizing the chamfering operation.

[0048] S3: After the chamfering process is completed, rotate the flipping frame 206 to turn the positioning frame 208 upward to its reset position. At the same time, start the electric slide rail 301 to release the piston pin by the positioning plate 212, and the piston pin falls into the collection groove on the right side of the base 1 by its own gravity.

[0049] S4: When the positioning frame 208 moves downward again to prepare for the next round of chamfering, use the airflow generated by squeezing the air inside the telescopic outer cylinder 203 by the telescopic inner rod 204 to push the relevant components to operate, achieving the alternate use of the two groups of blades 406.

[0050] S5: As the lifting frame 506 moves upward to a specific position of the fourth ventilation groove 512, the airflow flows along the established path and sprays upward from the cleaning hole 513 to clean the chamfering debris on the surface of the operation plate 405.

[0051] Working principle: During operation, place the piston pin in external transportation in the positioning groove 209 on the positioning frame 208. Start the first motor 26. The first motor 26 drives the third rotating rod 13 to rotate. The third rotating rod 13 drives the rotating plate 14 to rotate. The rotating plate 14 drives the positioning block 15 on its surface to rotate. The positioning block 15 slides inside the chute 16. At this time, it can drive the flipping frame 206 to swing reciprocally. When the flipping frame 206 rotates downward, it drives the connecting rod 205 to move. The connecting rod 205 drives the telescopic inner rod 204 to move into the telescopic outer cylinder 203. At the same time, the telescopic outer cylinder 203 rotates downward. The connecting rod 205 drives the support frame 207 on its surface to rotate downward. The support frame 207 drives the positioning frame 208 to rotate downward. During the downward movement of the positioning frame 208, the positioning frame 208 rotates relative to the flipping frame 206. At this time, the second rotating rod 305 on the positioning frame 208 moves along with the positioning frame 208. A third gear 306 is fixed on the surface of the second rotating rod 305. An electric slide rail 301 is installed on the flipping frame 206. A sliding seat 302 is slidably arranged on the surface of the electric slide rail 301. An installation plate 303 is arranged on the surface of the sliding seat 302. Start the electric slide rail 301 to make the rack 304 above the installation plate 303 contact the third gear 306. The third gear 306 meshes with the rack 304 on the installation plate 303. During the downward movement of the third gear 306 along with the positioning frame 208, the rack 304 drives the third gear 306 to rotate, thereby driving the second rotating rod 305 to rotate. The second rotating rod 305 drives the rotating disc 307 on the other side to rotate. The rotating disc 307 drives the spiral groove 308 on its surface to rotate, causing the limit block 309 inside the spiral groove 308 to move accordingly. At this time, the limit block 309 slides along the limit plate 211 towards the middle position. The limit plate 211 drives the positioning plate 212 to move. When the positioning frame 208 moves to the vertical downward position, start the second motor 18. The second motor 18 drives the first rotating rod 8 to rotate. The first rotating rod 8 drives the first gear 9 on its surface to rotate. The first gear 9 drives the synchronous belt 11 to rotate through the teeth 12. The teeth 12 arranged on the inner surface of the synchronous belt 11 drive a plurality of second gears 10 to rotate. The second gears 10 drive the rotating cylinder 6 to rotate. The rotating cylinder 6 drives the positioning cylinder 210 to rotate. The positioning cylinder 210 drives the positioning plate 212 to rotate through the limit plate 211. At this time, it can drive the piston pin inside to rotate. During the rotation, it contacts the blade 406. At this time, chamfering can be carried out. When the chamfering is completed, continue to rotate the flipping frame 206 to make the positioning frame 208 rotate upward and reset. At the same time, start the electric slide rail 301 to make the rack 304 on the other side contact the third gear 306 and drive the third gear 306 to rotate reversely, causing the positioning plate 212 to leave the piston pin. At this time, the piston pin enters the collection groove on the right side of the base 1 under the action of gravity. When the positioning frame 208 chamfers downward again, since the telescopic inner rod 204 squeezes the air inside the telescopic outer cylinder 203,Enable the gas inside the telescopic outer cylinder 203 to enter the second hose 501. The gas in the second hose 501 enters the ventilation box 511. The gas in the ventilation box 511 enters the inside of the first ventilation groove 502. The gas inside the first ventilation groove 502 enters the inside of the third ventilation groove 504. After the gas enters the inside of the third ventilation groove 504, it can push the lifting frame 506 to move upward. The lifting frame 506 drives the connecting block 507 to move upward. Since the depth of the bottom end of the first inclined groove 509 is shallower than the depth of the bottom end of the second inclined groove 510, and the depth of the top end of the second inclined groove 510 is shallower than the depth of the top end of the first inclined groove 509, the moving direction of the connecting block 507 is always from the top end of the first inclined groove 509 to the bottom end of the second inclined groove 510, and then from the bottom end of the second inclined groove 510 to the top end of the next first inclined groove 509. When the connecting block 507 moves from the bottom end of the second inclined groove 510 to the top end of the next first inclined groove 509, it can drive the operating cylinder 22 to rotate. The operating cylinder 22 drives the slope block 24 at the top to rotate. When the slope block 24 contacts one of the push rods 25, it will push the push rod 25 to move upward. The push rod 25 drives one end of the operating plate 405 to move upward. At this time, the operating plate 405 swings. A second connecting plate 404 is fixed on the other surface of the operating plate 405. At this time, the second connecting plate 404 swings downward and pushes the first connecting plate 403. Therefore, the other end of the first connecting plate 403 pushes the lifting block 402 to squeeze the first spring 401 and move downward. When one of the push rods 25 leaves the slope block 24, due to the upward elastic force of the first spring 401, the first spring 401 drives the lifting block 402 to move upward. Since the stop rod 23 on the fixed plate 21 can limit the first connecting plate 403, the first connecting plate 403 can abut against the stop rod 23. At this time, the operating plate 405 can lift the blade 406 on one side. When the slope block 24 continues to rotate and contacts another push rod 25, it can drive the first connecting plate 403 to swing towards the stop rod 23 on the other side and drive the other end of the operating plate 405 to lift, so as to lift the blade 406 on the other side. After chamfering a batch of piston pins each time, the chamfering blade 406 can be switched, so that the two groups of blades 406 can be used alternately, increasing their service life and avoiding the reduction of the performance of the blade 406 caused by too high temperature. When the lifting frame 506 moves upward to the position of the fourth ventilation groove 512, the air flow enters the inside of the fourth ventilation groove 512 and moves to the inside of the second ventilation groove 503. The gas passes through the ventilation holes 505 along the second ventilation groove 503, enters the inside of the operating cylinder 22, and moves upward along the operating cylinder 22 and sprays upward from the cleaning hole 513. At this time, the chamfering debris on the surface of the operating plate 405 can be cleaned. When the positioning frame 208 rotates upward, at this time, the telescopic inner rod 204 moves outward to the outside of the telescopic outer cylinder 203. The lifting frame 506 is reset through the second spring 514. An air inlet pipe is provided at the bottom of the ventilation box 511 and a one-way valve is provided. At this time, external gas enters the inside of the ventilation box 511 from the air inlet pipe.Make the internal and external air pressures balanced, facilitating the next cleaning.

[0052] The above are only the preferred embodiments of the present invention, and are not limitations on the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A piston pin chamfering processing device, comprising a base (1), characterized in that: A turning mechanism (2) is provided on the top of the base (1). The turning mechanism (2) includes side plates (201) which are fixedly connected to the base (1). A support rod (202) is rotatably connected to the inner surface of the side plate (201) through a bearing. A telescopic outer cylinder (203) is fixedly connected to the surface of the support rod (202). A telescopic inner rod (204) is slidably connected to the inner surface of the telescopic outer cylinder (203). The other end of the telescopic inner rod (204) is fixedly connected to a connecting rod (205). A turning frame (206) is rotatably connected to the outer surface of the connecting rod (205). A support frame (207) is fixedly connected to the outer surface of the connecting rod (205). A positioning frame (208) is fixedly connected to the outer surface of the support frame (207). A positioning groove (209) is formed on the inner surface of the positioning frame (208). A positioning cylinder (210) is rotatably connected to the inner surface of the positioning groove (209). A limiting plate (211) is fixedly connected to the inner surface of the positioning cylinder (210). A positioning plate (212) is slidably connected to the outer surface of the limiting plate (211). A control mechanism (3) is also provided on the top of the base (1). The control mechanism (3) includes an electric slide rail (301). A sliding seat (302) is slidably connected to the outer surface of the electric slide rail (301). A mounting plate (303) is fixedly connected to the outer surface of the sliding seat (302). A rack (304) is fixedly connected to the outer surface of the mounting plate (303). A second rotating rod (305) is rotatably connected to the outer surface of the positioning frame (208) through a bearing. A third gear (306) is fixedly connected to the outer surface of one side of the second rotating rod (305). The third gear (306) is meshed with the rack (304). A rotating disk (307) is fixedly connected to the outer surface of the other side of the second rotating rod (305). A spiral groove (308) is formed on the outer surface of the rotating disk (307). A limiting block (309) is fixedly connected to the outer surface of the positioning plate (212). The limiting block (309) is slidably connected to the spiral groove (308). A third rotating rod (13) is fixedly connected to the outer surface of the side plate (201). A rotating plate (14) is fixedly connected to the outer surface of the third rotating rod (13). A positioning block (15) is fixedly connected to the outer surface of the rotating plate (14). A chute (16) is formed on the outer surface of the turning frame (206). The positioning block (15) is slidably connected to the chute (16). An arc-shaped rail (17) is fixedly connected to the inner surface of the side plate (201). The connecting rod (205) is slidably connected to the arc-shaped rail (17). The piston pin transported from the outside is placed into the positioning groove (209) on the positioning frame (208). When the positioning frame (208) moves to the vertically downward position, chamfering can be carried out at this time. The electric slide rail (301) is fixedly installed on the outer surface of the turning frame (206).

2. The piston pin chamfering processing device according to claim 1, wherein: The inner surface of the positioning groove (209) is rotatably connected with a rotating cylinder (6) through a bearing. The rotating cylinder (6) is fixedly connected with a positioning cylinder (210). A control groove (7) is formed on the inner surface of the positioning frame (208). One end of the rotating cylinder (6) is rotatably connected with the control groove (7) through a bearing. Two first rotating rods (8) are rotatably connected with the inner surface of the control groove (7) through bearings. First gears (9) are fixedly connected to the outer surfaces of the two first rotating rods (8). A second gear (10) is fixedly connected to the outer surface of the rotating cylinder (6). Synchronous belts (11) are drivingly connected to the outer surfaces of the two first gears (9). A plurality of teeth (12) meshing with the first gears (9) and the second gear (10) are fixedly connected to the inner surface of the synchronous belt (11).

3. The piston pin chamfering processing device according to claim 2, characterized in that: The positioning cylinder (210) is sleeved on the outer surface of the second rotating rod (305).

4. The piston pin chamfering processing device according to claim 3, characterized in that: A first motor (26) is fixedly installed on the surface of the side plate (201). The output end of the first motor (26) is fixedly connected with a third rotating rod (13).

5. The piston pin chamfering processing device according to claim 4, characterized in that: A second motor (18) is fixedly installed on the outer surface of the positioning frame (208). The output end of the second motor (18) is fixedly connected with the first rotating rod (8).

6. The piston pin chamfering processing device according to claim 5, wherein: A replacement mechanism (4) is further arranged on the top of the base (1). The replacement mechanism (4) includes a first spring (401). The first spring (401) is fixedly connected with the base (1). The other end of the first spring (401) is fixedly connected with a lifting block (402). The outer surface of the lifting block (402) is rotatably connected with a first connecting plate (403) through a bearing. The other end of the first connecting plate (403) is rotatably connected with a second connecting plate (404) through a bearing. The other end of the second connecting plate (404) is fixedly connected with an operation plate (405). Two blades (406) are installed on the top of the operation plate (405).

7. The piston pin chamfering processing device according to claim 6, characterized in that: A protective cylinder (19) is fixedly connected to the upper surface of the base (1). A first hose (20) is communicated with the upper surface of the protective cylinder (19). The other end of the first hose (20) is fixedly connected with the operation plate (405). A fixing plate (21) is fixedly connected to the upper surface of the base (1). An operation cylinder (22) is rotatably connected with the upper surface of the base (1) through a bearing. The fixing plate (21) is slidably connected with the lifting block (402). A stop rod (23) is fixedly connected to the outer surface of the fixing plate (21). The protective cylinder (19) is rotatably connected with the operation cylinder (22). A slope block (24) is fixedly connected to the upper surface of the operation cylinder (22). Two push rods (25) are fixedly connected to the lower surface of the operation plate (405).

8. The piston pin chamfering processing device according to claim 7, wherein: The upper surface of the base (1) is also provided with a cleaning mechanism (5). The cleaning mechanism (5) includes a second hose (501), and the second hose (501) is communicated with the telescopic outer cylinder (203). A first ventilation groove (502) is formed on the surface of the base (1). An air ventilation box (511) is fixedly connected to the outer surface of the base (1). The other end of the second hose (501) is communicated with the air ventilation box (511). The air ventilation box (511) is communicated with the first ventilation groove (502). A third ventilation groove (504) is communicated with the outer surface of the first ventilation groove (502). A fourth ventilation groove (512) is communicated with the surface of the third ventilation groove (504). A second ventilation groove (503) is communicated with the surface of the fourth ventilation groove (512). An air ventilation hole (505) for communicating the second ventilation groove (503) and the operation cylinder (22) is formed on the upper surface of the base (1). A lifting frame (506) is slidably connected to the inner surface of the third ventilation groove (504). A connecting block (507) is fixedly connected to the upper surface of the lifting frame (506). A first inclined groove (509) and a second inclined groove (510) are formed on the outer surface of the operation cylinder (22). The connecting block (507) is slidably connected to the first inclined groove (509) and the second inclined groove (510). A cleaning hole (513) is formed on the outer surface of the operation plate (405). A second spring (514) is fixedly connected between the lifting frame (506) and the third ventilation groove (504).

9. A chamfering machining method for a piston pin, applied to a piston pin chamfering machining device as described in claim 8, characterized in that: Comprising the following steps: S1: Place the piston pin transported from the outside into the positioning groove (209) on the positioning frame (208). Immediately start the first motor (26). After the motor runs, drive a series of associated components to operate, and finally complete the positioning and clamping of the piston pin; S2: When the positioning frame (208) moves to the vertically downward position, start the second motor (18). The motor drives the relevant components to cause the piston pin to start rotating and contact the blade (406) during the rotation process, thereby realizing the chamfering operation; S3: After completing the chamfering process, rotate the flipping frame (206) to rotate the positioning frame (208) upward to reset. At the same time, start the electric slide rail (301) to release the piston pin by the positioning plate (212), and the piston pin falls into the collection groove on the right side of the base (1) by its own gravity; S4: When the positioning frame (208) moves downward again to prepare for the next round of chamfering, use the airflow generated by the telescopic inner rod (204) to squeeze the air inside the telescopic outer cylinder (203) to drive the relevant components to operate and achieve the alternate use of the two groups of blades (406); S5: As the lifting frame (506) moves upward to a specific position in the fourth ventilation groove (512), the airflow flows along the established path and sprays upward from the cleaning hole (513) to clean the chamfering debris on the surface of the operation plate (405).

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