Piston pin drilling device and using method

Abstract

The invention relates to the technical field of metal part machining equipment. The piston pin drilling device comprises a workbench, the middle of the workbench is hollow, arc-shaped plates used for limiting a workpiece are symmetrically arranged at the top of the workbench, the bottoms of the arc-shaped plates are fixedly connected with the top of the workbench, and a driving assembly is arranged above the middles of the two arc-shaped plates; a driving assembly is arranged on the workbench, a reaction device is arranged on the driving assembly, a switching assembly is arranged at the side end of the reaction device, a linkage assembly is arranged at the side end of the switching assembly, a machining assembly is arranged on the side, close to the workbench, of the linkage assembly and located in the middle of the workbench, and the reaction device comprises a control assembly and a fixing assembly. Through work of the reaction device and the machining assembly, a middle hole and a side hole can be automatically formed in the piston pin, auxiliary clamping is achieved in the forming process, and the punching efficiency and convenience are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal part processing equipment, and particularly to a piston pin drilling device and a using method thereof. Background Technique

[0002] A piston pin is a cylindrical pin installed on the piston skirt to connect the piston and the connecting rod. Generally, the middle of a high-quality piston pin is hollow, and symmetric side holes are provided on both sides for use.

[0003] In the prior art, when processing a piston pin, usually workers need to manually drill a hole in the middle of the piston pin first and keep it vertically downward during the drilling process. After the middle hole is opened, the positions of the two side holes of the piston pin are located, and the two sides are drilled. The working steps are cumbersome, resulting in low drilling efficiency. At the same time, during the drilling process, a fixing mechanism is often required to fix the position of the piston pin. Since the directions of the middle hole and the two side holes are different, the fixing angle also needs to be adjusted, and the convenience is insufficient. Therefore, a device that can automatically open the middle hole and side holes of the piston pin and assist in clamping during the opening process to avoid low drilling efficiency and insufficient convenience is needed. Summary of the Invention

[0004] The purpose of the present invention is to provide a piston pin drilling device and a using method thereof to solve the problems raised in the above background technique. To achieve the above purpose, the present invention provides the following technical solution: A piston pin drilling device includes a workbench, the middle of the workbench is hollow, arc-shaped plates for limiting the workpiece are symmetrically arranged on the top of the workbench, the bottom of the arc-shaped plates is fixedly connected to the top of the workbench, a driving component is arranged above the middle of the two arc-shaped plates, a reaction device is arranged on the driving component, a switching component is arranged at the side end of the reaction device, a linkage component is arranged at the side end of the switching component, and a processing component is arranged on the side close to the workbench and located in the middle of the workbench. The reaction device includes a control component and a fixing component, the control component is arranged on the driving component, and the fixing component is arranged below the control component.

[0005] Preferably, the driving component includes a driving frame, the driving frame is located above the two arc-shaped plates, both sides of the driving frame are fixedly connected to the top of the workbench through brackets, a vertically arranged reciprocating threaded rod is rotatably connected to the center of the driving frame, a rectangular frame is arranged on the reciprocating threaded rod, a through hole is arranged at the bottom of the rectangular frame, both sides of the rectangular frame are slidably arranged on sliding rods, the two sliding rods are symmetrically arranged, the tops of the two sliding rods are connected to the bottom of the driving frame, the rectangular frame is in threaded cooperation with the reciprocating threaded rod, and limiting arc plates are symmetrically arranged on both sides of the bottom of the rectangular frame, and the tops of the limiting arc plates are fixedly connected to the bottom of the rectangular frame.

[0006] Preferably, the control component includes a control rectangular box, which is arranged at the through-opening at the bottom of the rectangular frame, a first spring telescopic rod is arranged at the top of the control rectangular box, the telescopic end of the first spring telescopic rod is arranged downward, the first spring telescopic rod is in a force storage state in the initial state, the telescopic end of the first spring telescopic rod is connected to the top center of the control block, matching rods are symmetrically arranged on both sides of the first spring telescopic rod, the top of the matching rod slides through the top of the control rectangular box and is connected to the bottom of the trigger block, a group of saw teeth are symmetrically arranged on both sides of the control block, each group of saw teeth is provided with a fixed tooth groove plate on the side away from the control block, the fixed tooth groove plate is slidably arranged in the groove of the inner wall of the adjacent control rectangular box, the side end of the fixed tooth groove plate is movably connected to the inner wall of the groove by a plurality of compression springs, the tooth groove end of the fixed tooth groove plate and the saw teeth are slidably matched with each other, the bottom of the saw teeth is arranged obliquely, and an L-shaped tooth groove plate is slidably arranged at the bottom of the fixed tooth groove plate, and the L-shaped tooth groove plate is provided with a second spring on the side away from the control block. The telescopic rod is movably connected to the side end of the positioning plate, the top of the positioning plate is connected to the bottom of the fixed toothed plate, a half gear is provided below the L-shaped toothed plate, the half gear is rotatably set on the first rotating frame, the side end of the first rotating frame is connected to the inner wall of the adjacent control rectangular box, the toothed end of the half gear is meshed with the toothed end of the L-shaped toothed plate, a matching gear is provided below the half gear, the matching gear is rotatably set on the second rotating frame, the side end of the second rotating frame is connected to the inner wall of the adjacent control rectangular box, a first transmission belt is sleeved on the outer side of the center of the matching gear, the other end of the first transmission belt is sleeved on the center of the half gear, a control toothed plate is meshed below the matching gear, the side of the control toothed plate away from the control block slides through the side wall of the control rectangular box and is located outside thereof, the bottom of one end of the control toothed plate located outside the control rectangular box is connected to the top of the trigger rod, the bottom outer side of the trigger rod is arranged in an arc shape, and the side of the trigger rod close to the rectangular frame is movably connected to its inner wall through a tension spring.

[0007] Preferably, the fixing component includes a trigger post, the top of the trigger post is connected to the center of the bottom of the control block, the bottom of the trigger post slides through the bottom of the control rectangular box and is located outside it, a sliding cylinder is provided at the bottom of the control rectangular box, the sliding cylinder is sleeved outside the trigger post and is in sliding fit with it, the top of the sliding cylinder is connected to the bottom of the control rectangular box, the bottom of the trigger post is connected to the top of the bearing plate, the bottom of the bearing plate is connected to the tail of the first drill, the first drill is vertically arranged with the output end facing downwards, several first hinge frames are provided at the side end of the bearing plate, several of the first hinge frames are evenly arranged in a ring outside the bearing plate, each of the first hinge frames is hinged with a first hinge rod, the end of the first hinge rod away from the first hinge frame is hinged on the sliding frame on the inner wall of the top of the arc-shaped member, the end of the first hinge rod away from the first hinge frame and the sliding frame are in sliding fit with each other, a second hinge frame is provided on the inner wall of the bottom of the arc-shaped member, a second hinge rod is hinged on the second hinge frame, the end of the second hinge rod away from the second hinge frame is hinged on the third hinge frame, the side end of the third hinge frame is connected to the side end of the sliding cylinder, the second hinge rod and the first hinge rod are cross-set, and the middle of the second hinge rod is hinged to the middle of the first hinge rod.

[0008] Preferably, the switching component includes a switching rod, the switching rod is initially in an inclined state, the switching rod is located in the rotation groove on one of the brackets, the middle of the switching rod is rotatably connected to the inner wall of the rotation groove, the end of the switching rod close to the trigger post is hinged to the top of the trigger block through an L-shaped connecting rod, the other end of the switching rod is hinged with a connecting frame, the side away from the switching rod of the connecting frame is clamped at the side end of the connecting sleeve, the upper and lower ends of the connecting sleeve are respectively connected to the center of a switching bevel gear, the two switching bevel gears are splined to the switching shaft with the connecting sleeve, the upper and lower ends of the switching shaft are respectively rotatably connected to a fixing frame, the side end of the fixing frame is connected to the side wall of the adjacent bracket, a driving bevel gear is rotatably connected to the fixing frame located above, the driving bevel gear is located on the side away from the bracket of the switching bevel gear, the tooth groove end of the driving bevel gear is meshed with the tooth groove end of the switching bevel gear, the center of the driving bevel gear is rotatably connected to the fixing frame, a second transmission belt is sleeved outside the center of the driving bevel gear, the other end of the second transmission belt is sleeved outside the rotation connection of the reciprocating threaded rod and the driving frame, a driving motor is provided below the fixing frame located below, the output end of the driving motor is connected to the bottom of the switching shaft, a linkage bevel gear is rotatably connected to the fixing frame located below through a linkage shaft, and the side end of the linkage bevel gear can be meshed with the tooth groove end of the switching bevel gear.

[0009] Preferably, the linkage assembly includes a conversion gear, which is sleeved on the linkage shaft and located below the fixed frame, and a control bevel gear is meshed on the side of the conversion gear close to the bracket, and the center of the control bevel gear is rotatably connected to the locking frame, and the side end of the locking frame is connected to the side wall of the bracket, and a toggle crank is provided at the bottom of the control bevel gear, and a clamping sleeve is provided on the side of the toggle crank close to the bracket, and the side end of the clamping sleeve is connected to the side wall of the bracket, and a striking rod is movably connected to the clamping sleeve through a telescopic spring, and the striking rod and the clamping sleeve slide with each other, and an elastic block is provided on the side wall of the striking rod, and one end of the elastic block away from the striking rod is embedded in the opening of the side wall of the clamping sleeve, and when the control bevel gear rotates, it can drive the end of the toggle crank away from the control bevel gear to contact the end of the elastic block, so that the elastic block disengages from the opening, and the top of the striking rod is located directly below the switching rod.

[0010] Preferably, the processing assembly includes a control shaft, which is arranged at the side end of the striking rod, and the control shaft is vertically arranged at the middle center of the workbench, the top of the control shaft is rotatably connected to the bottom of the top of the workbench, a control crank is sleeved on the control shaft, and a control gear is arranged directly below the control crank, and the center of the control gear is rotatably connected to the bottom of the workbench, and the upper and lower sides of the control gear are meshed with linkage toothed rods, and the two linkage toothed rods are arranged in opposite mirror images, and the linkage toothed rods and the workbench are slidably matched with each other, and each of the linkage toothed rods is connected to the processing frame on one side away from the control gear. The side ends are connected, the top of the processing frame slides through the top of the workbench and is located on the outside thereof, the processing frame and the workbench slide in cooperation with each other, a horizontally arranged second drill is provided on the side of the processing frame close to the center of the workbench, the output end of the second drill is arranged toward the center of the workbench, a through hole for the second drill to pass through is opened on the arc plate, a movable track is provided on the top of one end of the linkage toothed groove rods close to the control gear, the other end of the control crank is embedded in the movable track and slides with it, a third transmission belt is sleeved on the outer side of the control shaft, and the other end of the third transmission belt is sleeved on the outer side of the linkage shaft.

[0011] Preferably, the method for using the piston pin drilling device comprises the following steps:

[0012] S1: First, the staff vertically places the piston pin in the two arc-shaped plates and conducts preliminary limiting on it. Subsequently, by controlling the switching component to work, the reciprocating threaded rod is driven to rotate, and then the rectangular frame is driven to approach the piston pin along the direction of the sliding rod, driving the first drill to open a hole in the middle of the piston pin. The position of the piston pin is further stabilized by the set limiting arc plate clamped on the end face of the piston pin. When the hole opening is completed, the bottom of the trigger rod enters the inner wall of the just-opened hole, squeezing the two trigger rods during the movement process, causing the two trigger rods to approach each other and stretch the spring, driving the two control tooth groove plates to approach each other, making the mating gear rotate synchronously. Through the set first transmission belt, the half gear rotates synchronously, driving the L-shaped tooth groove plate engaged with it to move away from the control block. After the second spring telescopic rod contracts in place, the two fixed tooth groove plates are driven by the L-shaped tooth groove plate to move away from each other along the direction of the slot, and the compression spring contracts, disengaging from the saw teeth. The control block is driven by the first spring telescopic rod through the mating rod to drive the trigger block to move upward, causing the trigger column to move upward synchronously along the sliding cylinder. During the upward movement, through the bearing plate and the first hinge frame, the first hinge rod and the second hinge rod deflect relative to each other, causing several arc-shaped parts to move away from the trigger column in the direction away from it, thus abutting against the inner wall of the just-opened hole. After the half gear disengages from the L-shaped tooth groove plate, the fixed tooth groove plate returns to its original position under the action of the compression spring, causing the tooth groove ends of the two fixed tooth groove plates to be clamped on the saw teeth on both sides of the control block, fixing the position of the control block and simultaneously fixing the piston pin;

[0013] S2: By controlling the driving motor to work, the driving bevel gear engaged with it is driven to rotate synchronously through the switching bevel gear. Through the second transmission belt, the reciprocating threaded rod is driven to rotate, and then the hole opening work in the middle is completed, and the piston pin is fixed from the inside. When the trigger block moves upward, the switching rod is driven to deflect in the rotation groove through the L-shaped connecting rod, and then the connecting sleeve is driven to move downward along the switching shaft through the connecting frame, causing the switching bevel gear to disengage from the driving bevel gear, stopping the rotation of the reciprocating threaded rod, and making the side end of the switching bevel gear at the bottom of it engage with the side end of the linkage bevel gear, driving the linkage shaft to rotate. Through the set third transmission belt, the control shaft and the control crank are driven to rotate synchronously. With the cooperation of the moving track, one of the processing frames is driven to reciprocate towards the center of the workbench. Through the cooperation of the linkage tooth groove rod and the control gear, the two processing frames and the second drill are synchronously driven to reciprocate, facilitating the opening of holes on both sides of the piston pin through the through holes;

[0014] S3: After the control crank drives the two processing frames to move back and forth once, the conversion gear drives the control bevel gear to rotate one circle, thereby disengaging the opening by toggling the end of the crank against the elastic card block, and the striking rod slides along the card sleeve under the action of the telescopic spring, thereby driving the switching rod to deflect and help it reset. Since the bottom of the sawtooth is arranged obliquely, the control block is driven to move downward between the two fixed tooth groove plates, and the first spring rod is stretched, and after the switching rod is reset, the switching bevel gear located above is driven to engage with the driving bevel gear again, thereby driving the reciprocating threaded rod to rotate, thereby driving the first drilling rig to disengage from the piston pin. When the trigger rod is disengaged, it is reset by the stretching spring, and during the resetting process, the half gear is driven to reset. Under the action of the second spring telescopic rod, the L-shaped tooth groove plate is reset in coordination, and after the half gear is disengaged from the meshing with the L-shaped tooth groove plate, the L-shaped tooth groove plate is reset under the action of the second spring telescopic rod, which is convenient for subsequent work.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In the present invention, when the device is in use, the working of the processing component is controlled by the linkage component, and then the side holes on both sides of the piston pin are opened. After the opening is completed, the working of the switching component is controlled by the linkage component, so that the processing component stops working and drives the driving component to work again to make it disengage from the piston pin. After the disengagement process, the control component drives the fixing component to complete the reset, which is convenient for the next opening work. In this process, the need for staff to manually open holes in the middle and both sides of the piston pin is avoided, the working steps are simplified, the drilling efficiency is improved, and the adjustment of the fixing mechanism is avoided. The connection and fixation are automatically completed, which improves the convenience of using the device, thereby realizing the ability to automatically open the middle hole and side holes of the piston pin and assist in clamping during the opening process, so as to avoid the effects of low drilling efficiency and insufficient convenience.

[0017] In the present invention, the staff first places the piston pin vertically in the two arc-shaped plates and performs preliminary position limiting on it, and then controls the switching component to work. When the hole drilling is completed, the position of the control block is automatically fixed, and the piston pin is fixed synchronously, thereby facilitating the drilling of holes on both sides of the piston pin and improving the convenience of using the device.

[0018] In the present invention, when the trigger block moves upward, the reciprocating threaded rod stops rotating, and the side end of the switching bevel gear at its bottom meshes with the side end of the linkage bevel gear, thereby driving the linkage shaft to rotate, facilitating the opening of holes on both sides of the piston pin. Thus, it is avoided that workers manually open holes in the middle and on both sides of the piston pin, simplifying the working steps, improving the drilling efficiency, and avoiding the adjustment of the fixing mechanism. The connection and fixation are automatically completed, improving the convenience of using this device. After the side holes are opened, the device automatically resets, facilitating subsequent work, and thus automatically connecting to the next work, improving the practicality of this device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic three-dimensional structure of the present invention Figure 1 ;

[0020] Figure 2 is a schematic three-dimensional structure of the present invention Figure 2 ;

[0021] Figure 3 is a schematic partial three-dimensional structure of the present invention Figure 1 ;

[0022] Figure 4 is a schematic partial three-dimensional structure of the drive component and the reaction device in the present invention Figure 1 ;

[0023] Figure 5 is a schematic partial three-dimensional structure of the drive component and the reaction device in the present invention Figure 2 ;

[0024] Figure 6 is a schematic partial plan view of the reaction device in the present invention;

[0025] Figure 7 is a schematic exploded three-dimensional structure of the reaction device in the present invention;

[0026] Figure 8 is a schematic partial plan view of the reaction device in the present invention

[0027] Figure 9 is a schematic partial three-dimensional structure of the present invention Figure 2 ;

[0028] Figure 10 is a schematic partial three-dimensional structure of the present invention Figure 3 ;

[0029] Figure 11 is a schematic partial cross-sectional view of the linkage component in the present invention;

[0030] Figure 12 is a schematic partial three-dimensional structure of the processing component in the present invention.

[0031] In the figure: 1, workbench; 2, arc plate; 3, drive assembly; 31, drive frame; 32, bracket; 33, reciprocating threaded rod; 34, rectangular frame; 35, sliding rod; 36, limit arc plate; 4, reaction device; 41, control assembly; 411, control rectangular box; 412, first spring telescopic rod; 413, control block; 414, matching rod; 415, trigger block; 416, sawtooth; 417, fixed tooth plate; 418, slot; 419, compression spring spring; 420, L-shaped toothed plate; 421, second spring telescopic rod; 422, positioning plate; 423, half gear; 424, first rotating frame; 425, matching gear; 426, second rotating frame; 427, first transmission belt; 428, control toothed plate; 429, trigger rod; 430, tension spring; 44, fixing assembly; 441, trigger column; 442, sliding cylinder; 443, bearing plate; 444, first drilling machine; 445, first articulated frame; 4 46, first hinge rod; 447, arc-shaped member; 448, sliding frame; 449, second hinge frame; 450, second hinge rod; 451, third hinge frame; 5, switching assembly; 51, switching rod; 52, rotating groove; 53, L-shaped connecting rod; 54, connecting frame; 55, connecting sleeve; 56, switching bevel gear; 57, switching shaft; 58, fixing frame; 59, driving bevel gear; 60, second transmission belt; 61, driving motor; 62, linkage shaft; 63 , linkage bevel gear; 7, linkage assembly; 71, conversion gear; 72, control bevel gear; 73, locking frame; 74, toggle crank; 75, sleeve; 76, telescopic spring; 77, striking rod; 78, elastic block; 79, opening; 8, processing assembly; 81, control shaft; 82, control crank; 83, control gear; 84, linkage toothed rod; 85, processing frame; 86, second drilling rig; 87, through hole; 88, moving track; 89, third transmission belt. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figures 1 to 12, the present invention provides a technical solution: a piston pin drilling device, including a workbench 1, the middle part of the workbench 1 is hollow, the top of the workbench 1 is symmetrically provided with arc-shaped plates 2 for limiting workpieces, the bottom of the arc-shaped plates 2 is fixedly connected to the top of the workbench 1, above the middle parts of the two arc-shaped plates 2 is provided with a driving assembly 3, on the driving assembly 3 is provided with a reaction device 4, on the side end of the reaction device 4 is provided with a switching assembly 5, on the side end of the switching assembly 5 is provided with a linkage assembly 7, and on the side of the linkage assembly 7 close to the workbench 1 is provided with a processing assembly 8 and is located in the middle of the workbench 1. The reaction device 4 includes a control assembly 41 and a fixing assembly 44, the control assembly 41 is arranged on the driving assembly 3, and the fixing assembly 44 is arranged below the control assembly 41.

[0034] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 shown, the driving assembly 3 includes a driving frame 31, the driving frame 31 is located above the two arc-shaped plates 2, both sides of the driving frame 31 are fixedly connected to the top of the workbench 1 through brackets 32, a vertically arranged reciprocating threaded rod 33 is rotatably connected at the center of the driving frame 31, a rectangular frame 34 is arranged on the reciprocating threaded rod 33, a through hole is arranged at the bottom of the rectangular frame 34, both sides of the rectangular frame 34 are slidably arranged on sliding rods 35, the two sliding rods 35 are symmetrically arranged, the tops of the two sliding rods 35 are connected to the bottom of the driving frame 31, the rectangular frame 34 is in threaded cooperation with the reciprocating threaded rod 33, and symmetrically arranged limiting arc plates 36 are provided on both sides of the bottom of the rectangular frame 34, and the tops of the limiting arc plates 36 are fixedly connected to the bottom of the rectangular frame 34;

[0035] The control assembly 41 includes a control rectangular box 411, which is arranged at the through-hole at the bottom of the rectangular frame 34. A first spring telescopic rod 412 is arranged at the top of the control rectangular box 411. The telescopic end of the first spring telescopic rod 412 is arranged downward. The first spring telescopic rod 412 is in a power storage state in the initial state. The telescopic end of the first spring telescopic rod 412 is connected to the top center of the control block 413. The first spring telescopic rod 412 is symmetrically provided with matching rods 414 on both sides. The top of the matching rod 414 slides through the top of the control rectangular box 411 and is connected to the bottom of the trigger block 415. The control block 413 A group of saw teeth 416 are symmetrically arranged on both sides of 13, and a fixed tooth groove plate 417 is arranged on the side of each group of saw teeth 416 away from the control block 413, and the fixed tooth groove plate 417 is slidably arranged in the slot 418 of the inner wall of the adjacent control rectangular box 411, and the side end of the fixed tooth groove plate 417 is movably connected to the inner wall of the slot 418 through a plurality of compression springs 419, and the tooth groove end of the fixed tooth groove plate 417 and the saw teeth 416 are slidably matched with each other, and the bottom of the saw teeth 416 is arranged obliquely, and an L-shaped tooth groove plate 420 is slidably arranged at the bottom of the fixed tooth groove plate 417, and the side of the L-shaped tooth groove plate 420 away from the control block 413 is connected by a second spring telescopic rod 4 21 is movably connected to the side end of the positioning plate 422, the top of the positioning plate 422 is connected to the bottom of the fixed tooth groove plate 417, a half gear 423 is provided below the L-shaped tooth groove plate 420, and the half gear 423 is rotatably set on the first rotating frame 424, the side end of the first rotating frame 424 is connected to the inner wall of the adjacent control rectangular box 411, the tooth groove end of the half gear 423 is meshed with the tooth groove end of the L-shaped tooth groove plate 420, and a matching gear 425 is provided below the half gear 423, and the matching gear 425 is rotatably set on the second rotating frame 426, and the side end of the second rotating frame 426 is connected to the inner wall of the adjacent control rectangular box 411 A first transmission belt 427 is sleeved on the outside of the center of the matching gear 425, and the other end of the first transmission belt 427 is sleeved on the center of the half gear 423. A control tooth plate 428 is meshed below the matching gear 425. The side of the control tooth plate 428 away from the control block 413 slides through the side wall of the control rectangular box 411 and is located outside thereof. The bottom of one end of the control tooth plate 428 located outside the control rectangular box 411 is connected to the top of the trigger rod 429. The bottom outer side of the trigger rod 429 is arranged in an arc shape. The side of the trigger rod 429 close to the rectangular frame 34 is movably connected to its inner wall through a tension spring 430.

[0036] The fixed component 44 includes a trigger post 441. The top of the trigger post 441 is connected to the bottom center of the control block 413. The bottom of the trigger post 441 slides through the bottom of the control rectangular box 411 and is located outside it. A sliding cylinder 442 is provided at the bottom of the control rectangular box 411. The sliding cylinder 442 is sleeved outside the trigger post 441 and is in sliding fit with it. The top of the sliding cylinder 442 is connected to the bottom of the control rectangular box 411. The bottom of the trigger post 441 is connected to the top of a bearing plate 443. The bottom of the bearing plate 443 is connected to the tail of a first drill 444. The first drill 444 is vertically arranged with its output end facing downwards. A number of first hinge brackets 445 are provided at the side end of the bearing plate 443. The number of first hinge brackets 445 are evenly arranged in a ring outside the bearing plate 443. A first hinge rod 446 is hinged on each first hinge bracket 445. The end of the first hinge rod 446 away from the first hinge bracket 445 is hinged on a sliding bracket 448 on the inner wall of the top of an arc-shaped member 447. The end of the first hinge rod 446 away from the first hinge bracket 445 and the sliding bracket 448 are in sliding fit with each other. A second hinge bracket 449 is provided on the inner wall of the bottom of the arc-shaped member 447. A second hinge rod 450 is hinged on the second hinge bracket 449. The end of the second hinge rod 450 away from the second hinge bracket 449 is hinged on a third hinge bracket 451. The side end of the third hinge bracket 451 is connected to the side end of the sliding cylinder 442. The second hinge rod 450 and the first hinge rod 446 are cross-arranged. The middle of the second hinge rod 450 is hinged to the middle of the first hinge rod 446;

[0037] The staff first place the piston pin vertically in the two arc-shaped plates 2 and perform preliminary limiting on it. Subsequently, by controlling the switching component 5 to work, the reciprocating threaded rod 33 is driven to rotate, and then the rectangular frame 34 is driven to approach the piston pin along the direction of the sliding rod 35, thereby driving the first drill 444 to open a hole in the middle of the piston pin. The position of the piston pin is further stabilized by the provided limiting arc plate 36 being clamped on the end face of the piston pin. When the hole opening is completed, the bottom of the trigger rod 429 enters the inner wall of the just-opened hole, so that the two trigger rods 429 are squeezed during the movement process, causing the two trigger rods 429 to approach each other and squeeze the tension spring 430, thereby driving the two control tooth groove plates 428 to approach each other, making the mating gear 425 rotate synchronously. Through the provided first transmission belt 427, the half gear 423 rotates synchronously, thereby driving the L-shaped tooth groove plate 420 meshing with it to move away from the control block 413. After the second spring telescopic rod 421 contracts in place, the two fixed tooth groove plates 417 are driven by the L-shaped tooth groove plate 420 to move away from each other along the direction of the slot 418, and the compression spring 419 contracts, thereby disengaging from the saw teeth 416. The control block 413 is released by the first spring telescopic rod 412 and drives the trigger block 415 to move upward through the mating rod 414, so that the trigger post 441 moves upward synchronously along the sliding cylinder 442. During the upward movement, through the bearing plate 443 and the first hinge frame 445, the first hinge rod 446 and the second hinge rod 450 deflect relative to each other, causing several arc-shaped members 447 to move away from the trigger post 441, thereby abutting against the inner wall of the just-opened hole. After the half gear 423 disengages from the L-shaped tooth groove plate 420, the fixed tooth groove plate 417 returns to its original position under the action of the compression spring 419, so that the tooth groove ends of the two fixed tooth groove plates 417 are clamped on the saw teeth 416 on both sides of the control block 413, thereby fixing the position of the control block 413 and synchronously fixing the piston pin, which is convenient for opening holes on both sides of the piston pin and improves the convenience of using this device.

[0038] In this embodiment, as Figure 2 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 12As shown, the switching component 5 includes a switching rod 51. The switching rod 51 is initially in an inclined state. The switching rod 51 is located in a rotating groove 52 on one of the brackets 32. The middle part of the switching rod 51 is rotatably connected to the inner wall of the rotating groove 52. One end of the switching rod 51 close to the trigger post 441 is hinged to the top of the trigger block 415 through an L-shaped connecting rod 53. The other end of the switching rod 51 is hinged with a connecting frame 54. The side of the connecting frame 54 away from the switching rod 51 is clamped at the side end of the connecting sleeve 55. The upper and lower ends of the connecting sleeve 55 are respectively connected to the center of a switching bevel gear 56. The two switching bevel gears 56 are splined to the switching shaft 57 together with the connecting sleeve 55. The upper and lower ends of the switching shaft 57 are respectively rotatably connected to a fixing frame 58. The side end of the fixing frame 58 is connected to the side wall of the adjacent bracket 32. A driving bevel gear 59 is rotatably connected to the upper fixing frame 58. The driving bevel gear 59 is located on the side of the switching bevel gear 56 away from the bracket 32. The tooth groove end of the driving bevel gear 59 meshes with the tooth groove end of the switching bevel gear 56. The center of the driving bevel gear 59 is rotatably connected to the fixing frame 58. A second transmission belt 60 is sleeved outside the center of the driving bevel gear 59. The other end of the second transmission belt 60 is sleeved outside the rotating connection of the reciprocating threaded rod 33 and the driving frame 31. A driving motor 61 is provided below the lower fixing frame 58. The output end of the driving motor 61 is connected to the bottom of the switching shaft 57. A linkage bevel gear 63 is rotatably connected to the lower fixing frame 58 through a linkage shaft 62. The side end of the linkage bevel gear 63 can mesh with the tooth groove end of the switching bevel gear 56;

[0039] The linkage component 7 includes a conversion gear 71. The conversion gear 71 is sleeved on the linkage shaft 62 and is located below the fixing frame 58. A control bevel gear 72 meshes with the side of the conversion gear 71 close to the bracket 32. The center of the control bevel gear 72 is rotatably connected to a locking frame 73. The side end of the locking frame 73 is connected to the side wall of the bracket 32. A toggle crank 74 is provided at the bottom of the control bevel gear 72. A clamping sleeve 75 is provided on the side of the toggle crank 74 close to the bracket 32. The side end of the clamping sleeve 75 is connected to the side wall of the bracket 32. A striking rod 77 is movably connected in the clamping sleeve 75 through a telescopic spring 76. The striking rod 77 and the clamping sleeve 75 are slidably matched with each other. An elastic clamping block 78 is provided on the side wall of the striking rod 77. One end of the elastic clamping block 78 away from the striking rod 77 is embedded in an opening 79 on the side wall of the clamping sleeve 75. When the control bevel gear 72 rotates, it can drive one end of the toggle crank 74 away from the control bevel gear 72 to abut against the end of the elastic clamping block 78, so that the elastic clamping block 78 disengages from the opening 79. The top of the striking rod 77 is located directly below the switching rod 51;

[0040] The processing component 8 includes a control shaft 81 which is arranged at the side end of the striking rod 77. The control shaft 81 is vertically arranged at the central center of the workbench 1. The top of the control shaft 81 is rotatably connected to the bottom of the top of the workbench 1. A control crank 82 is sleeved on the control shaft 81. A control gear 83 is arranged directly below the control crank 82. The center of the control gear 83 is rotatably connected to the bottom inside the workbench 1. Both the upper and lower sides of the control gear 83 are meshed with a linkage rack bar 84. The two linkage rack bars 84 are arranged in a mirror-image opposite manner. The linkage rack bar 84 and the workbench 1 are in sliding fit with each other. One side of each linkage rack bar 84 away from the control gear 83 is connected to the side end of a processing frame 85. The top of the processing frame 85 slides through the top of the workbench 1 and is located outside thereof. The processing frame 85 and the workbench 1 are in sliding fit with each other. A horizontally arranged second drill 86 is arranged on one side of the processing frame 85 close to the center of the workbench 1. The output end of the second drill 86 faces the center of the workbench 1. A through hole 87 for the second drill 86 to pass through is formed in the arc-shaped plate 2. A moving track 88 is arranged at the top of one end of the linkage rack bar 84 close to the control gear 83. The other end of the control crank 82 is embedded in the moving track 88 and is in sliding fit with it. A third transmission belt 89 is sleeved on the outer side of the control shaft 81. The other end of the third transmission belt 89 is sleeved on the outer side of the linkage shaft 62;

[0041] By controlling the driving motor 61 to work, the switching bevel gear 56 drives the driving bevel gear 59 meshing with it to rotate synchronously, and the reciprocating threaded rod 33 is driven to rotate through the second transmission belt 60, and then the hole opening work in the middle is completed, and the piston pin is fixed from the inside. When the trigger block 415 moves up, the switching rod 51 is driven to deflect in the rotating groove 52 through the L-shaped connecting rod 53, and then the connecting sleeve 55 is driven to move down along the switching shaft 57 through the connecting frame 54, thereby driving the switching bevel gear 56 to disengage from the driving bevel gear 59, so that the reciprocating threaded rod 33 stops rotating, and the side end of the switching bevel gear 56 at the bottom is meshed with the side end of the linkage bevel gear 63, thereby driving the linkage The driving shaft 62 rotates, and through the third transmission belt 89, the control shaft 81 and the control crank 82 are driven to rotate synchronously, and with the cooperation of the moving track 88, one of the processing frames 85 is driven to reciprocate toward the center of the workbench 1, and through the cooperation of the linkage toothed rod 84 and the control gear 83, the two processing frames 85 and the second drilling machine 86 are synchronously driven to reciprocate, so that holes are drilled on both sides of the piston pin through the through hole 87, thereby avoiding the need for the staff to manually drill holes in the middle and both sides of the piston pin, simplifying the working steps, thereby improving the drilling efficiency, and avoiding the adjustment of the fixing mechanism, automatically completing the connection and fixing, and improving the convenience of using the device After the control crank 82 drives the two processing frames 85 to make a reciprocating movement, the conversion gear 71 drives the control bevel gear 72 to rotate one circle, so that the end of the crank 74 is pushed against the elastic block 78 to make it disengage from the opening 79, and the striking rod 77 slides along the clamping sleeve 75 under the action of the telescopic spring 76, thereby driving the switching rod 51 to deflect and help it to reset. Since the bottom of the sawtooth 416 is arranged obliquely, the control block 413 is driven to move downward between the two fixed tooth groove plates 417 and stretch the first spring rod. After the switching rod 51 is reset, the switching bevel gear 56 located above is driven to mesh with the driving bevel gear 59 again, thereby driving the reciprocating threaded rod 33 to rotate. The trigger rod 429 is disengaged, thereby driving the first drilling machine 444 to disengage from the piston pin. When the trigger rod 429 is disengaged, it is reset by stretching the spring 430, and during the resetting process, the half gear 423 is driven to reset. Under the action of the second spring telescopic rod 421, the L-shaped toothed plate 420 is reset in coordination, and after the half gear 423 is disengaged from the meshing with the L-shaped toothed plate 420, the L-shaped toothed plate 420 is reset under the action of the second spring telescopic rod 421, which is convenient for subsequent work. When the next hole opening work is performed, the switching rod 51 is deflected again, thereby contacting the top of the striking rod 77, so that the elastic block 78 is re-set to the opening 79, thereby automatically connecting to the next work, thereby improving the practicality of the device.

[0042] The use method and advantages of the present invention: The use method of the piston pin drilling device, the working process is as follows:

[0043] likeFigure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 as shown below:

[0044] S1: First, the staff vertically places the piston pin in the two arc-shaped plates 2 and performs preliminary limiting on it. Subsequently, by controlling the switching component 5 to work, the reciprocating threaded rod 33 is driven to rotate, and then the rectangular frame 34 is driven to approach the piston pin along the direction of the sliding rod 35, thereby driving the first drill 444 to open a hole in the middle of the piston pin. The position of the piston pin is further stabilized by the provided limiting arc plate 36 being clamped on the end face of the piston pin. When the hole opening is completed, the bottom of the trigger rod 429 enters the inner wall of the just-opened hole at this time, so that the two trigger rods 429 are squeezed during the movement process, causing the two trigger rods 429 to approach each other and stretch the spring 430, thereby driving the two control tooth groove plates 428 to approach each other, making the mating gear 425 rotate synchronously. Through the provided first transmission belt 427, the half gear 423 rotates synchronously, thereby driving the L-shaped tooth groove plate 420 engaged with it to move away from the control block 413. After the second spring telescopic rod 421 contracts in place, the two fixed tooth groove plates 417 are driven by the L-shaped tooth groove plate 420 to move away from each other along the direction of the slot 418, and the compression spring 419 contracts, thereby disengaging from the saw teeth 416. The control block 413 is released by the first spring telescopic rod 412 and drives the trigger block 415 to move upward through the mating rod 414, so that the trigger column 441 moves upward synchronously along the sliding cylinder 442. During the upward movement, through the bearing plate 443 and the first hinge frame 445, the first hinge rod 446 and the second hinge rod 450 deflect relative to each other, causing several arc-shaped members 447 to move away from the trigger column 441 in a direction away from it, thereby abutting against the inner wall of the just-opened hole. After the half gear 423 disengages from the L-shaped tooth groove plate 420, the fixed tooth groove plate 417 is reset under the action of the compression spring 419, so that the tooth groove ends of the two fixed tooth groove plates 417 are clamped on the saw teeth 416 on both sides of the control block 413, thereby fixing the position of the control block 413 and fixing the piston pin synchronously;

[0045] S2: By controlling the driving motor 61 to work, the switching bevel gear 56 drives the driving bevel gear 59 meshing with it to rotate synchronously, and the reciprocating threaded rod 33 is driven to rotate through the second transmission belt 60, and then the hole opening work in the middle is completed, and the piston pin is fixed from the inside. When the trigger block 415 moves up, the switching rod 51 is driven to deflect in the rotating groove 52 through the L-shaped connecting rod 53, and then the connecting sleeve 55 is driven to move down along the switching shaft 57 through the connecting frame 54, thereby driving the switching bevel gear 56 to disengage from the driving bevel gear 59, so that the reciprocating threaded rod 33 is driven to rotate. The rod 33 stops rotating, and the side end of the switching bevel gear 56 at the bottom is meshed with the side end of the linkage bevel gear 63, thereby driving the linkage shaft 62 to rotate, and through the third transmission belt 89, the control shaft 81 and the control crank 82 are driven to rotate synchronously, and under the cooperation of the moving track 88, one of the processing frames 85 is driven to reciprocate toward the center of the workbench 1, and through the cooperation of the linkage toothed rod 84 and the control gear 83, the two processing frames 85 and the second drilling machine 86 are synchronously driven to reciprocate, so as to facilitate drilling holes on both sides of the piston pin through the through hole 87;

[0046] S3: After the control crank 82 drives the two processing frames 85 to reciprocate once, the conversion gear 71 drives the control bevel gear 72 to rotate one circle, so that the end of the crank 74 is pressed against the elastic block 78 to disengage the opening 79, and the striking rod 77 slides along the clamping sleeve 75 under the action of the telescopic spring 76, thereby driving the switching rod 51 to deflect and help it to reset. Since the bottom of the sawtooth 416 is arranged obliquely, the control block 413 is driven to move downward between the two fixed tooth groove plates 417, and the first spring rod is stretched. After the switching rod 51 is reset, The switching bevel gear 56 located above is driven to engage with the driving bevel gear 59 again, thereby driving the reciprocating threaded rod 33 to rotate, thereby driving the first drilling rig 444 to disengage from the piston pin. When the trigger rod 429 is disengaged, it is reset by stretching the spring 430, and during the resetting process, the half gear 423 is driven to reset. Under the action of the second spring telescopic rod 421, the L-shaped toothed plate 420 is reset in coordination. After the half gear 423 is disengaged from the L-shaped toothed plate 420, the L-shaped toothed plate 420 is reset under the action of the second spring telescopic rod 421, which is convenient for subsequent work.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A piston pin drilling device, comprising a workbench (1), wherein the middle portion of the workbench (1) is hollow, an arc-shaped plate (2) for limiting a workpiece is symmetrically arranged on the top of the workbench (1), and the bottom of the arc-shaped plate (2) is fixedly connected to the top of the workbench (1); Features: A driving assembly (3) is provided above the middle of the two arc-shaped plates (2); a reaction device (4) is provided on the driving assembly (3); a switching assembly (5) is provided at the side end of the reaction device (4); a linkage assembly (7) is provided at the side end of the switching assembly (5); a processing assembly (8) is provided on the side of the linkage assembly (7) close to the workbench (1) and located in the middle of the workbench (1); the reaction device (4) comprises a control assembly (41) and a fixing assembly (44); the control assembly (41) is provided on the driving assembly (3); and the fixing assembly (44) is provided below the control assembly (41); The driving assembly (3) comprises a driving frame (31), the driving frame (31) is located above the two arc-shaped plates (2), both sides of the driving frame (31) are fixedly connected to the top of the workbench (1) through brackets (32), and a vertically arranged reciprocating threaded rod (33) is rotatably connected at the center of the driving frame (31).

2. A piston pin drilling device according to claim 1, characterized in that: A rectangular frame (34) is provided on the reciprocating threaded rod (33), a through opening is provided at the bottom of the rectangular frame (34), both sides of the rectangular frame (34) are slidably arranged on the sliding rod (35), the two sliding rods (35) are symmetrically arranged, the tops of the two sliding rods (35) are connected to the bottom of the driving frame (31), the rectangular frame (34) is threadedly matched with the reciprocating threaded rod (33), and limiting arc plates (36) are symmetrically provided on both sides of the bottom of the rectangular frame (34), and the tops of the limiting arc plates (36) are fixedly connected to the bottom of the rectangular frame (34).

3. A piston pin drilling device according to claim 2, characterized in that: The control assembly (41) comprises a control rectangular box (411), the control rectangular box (411) is arranged at a through opening at the bottom of the rectangular frame (34), a first spring telescopic rod (412) is arranged at the top of the control rectangular box (411), the telescopic end of the first spring telescopic rod (412) is arranged downward, the first spring telescopic rod (412) is in a power storage state in an initial state, the telescopic end of the first spring telescopic rod (412) is connected to the top center of the control block (413), matching rods (414) are symmetrically arranged on both sides of the first spring telescopic rod (412), the top of the matching rod (414) slides through the top of the control rectangular box (411) and is connected to the bottom of the trigger block (415). A group of saw teeth (416) are symmetrically arranged on both sides of the control block (413), and a fixed tooth groove plate (417) is arranged on the side of each group of saw teeth (416) away from the control block (413). The fixed tooth groove plate (417) is slidably arranged in the slot (418) of the inner wall of the adjacent control rectangular box (411). The side end of the fixed tooth groove plate (417) is movably connected to the inner wall of the slot (418) through a plurality of compression springs (419). The tooth groove end of the fixed tooth groove plate (417) and the saw teeth (416) are slidably matched with each other, and the bottom of the saw teeth (416) is arranged obliquely. An L-shaped tooth groove plate (420) is slidably arranged at the bottom of the fixed tooth groove plate (417), and the L-shaped tooth groove plate (420) is away from the control One side of the control block (413) is movably connected to the side end of the positioning plate (422) through a second spring telescopic rod (421); the top of the positioning plate (422) is connected to the bottom of the fixed tooth groove plate (417); a half gear (423) is provided below the L-shaped tooth groove plate (420); the half gear (423) is rotatably arranged on a first rotating frame (424); the side end of the first rotating frame (424) is connected to the inner wall of the adjacent control rectangular box (411); the tooth groove end of the half gear (423) is meshed with the tooth groove end of the L-shaped tooth groove plate (420); a matching gear (425) is provided below the half gear (423); the matching gear (425) is rotatably arranged on a second rotating frame (426); The side end of the second rotating frame (426) is connected to the inner wall of the adjacent control rectangular box (411); a first transmission belt (427) is sleeved on the outer side of the center of the matching gear (425); the other end of the first transmission belt (427) is sleeved on the center of the half gear (423); a control tooth plate (428) is meshed below the matching gear (425); the side of the control tooth plate (428) away from the control block (413) slides through the side wall of the control rectangular box (411) and is located outside the control rectangular box (411); the bottom of one end of the control tooth plate (428) located outside the control rectangular box (411) is connected to the top of the trigger rod (429); the bottom outer side of the trigger rod (429) is arranged in an arc shape;The trigger rod (429) is movably connected to the inner wall of the rectangular frame (34) on one side thereof via a tension spring (430).

4. A piston pin drilling device according to claim 3, characterized in that: The fixing assembly (44) comprises a trigger column (441), the top of which is connected to the bottom center of the control block (413), the bottom of which slides through the bottom of the control rectangular box (411) and is located outside the control rectangular box (411), the bottom of which is provided with a sliding cylinder (442), which is sleeved on the outside of the trigger column (441) and slidably cooperates with the trigger column (441), and the top of which is provided with a sliding cylinder (442). The trigger column (441) is connected to the bottom of the control rectangular box (411), the bottom of the trigger column (441) is connected to the top of the carrier plate (443), the bottom of the carrier plate (443) is connected to the tail of the first drilling rig (444), the first drilling rig (444) is vertically arranged with the output end facing downward, and the side end of the carrier plate (443) is provided with a plurality of first articulated frames (445), and the plurality of first articulated frames (445) are evenly arranged in a ring shape on the carrier plate (443). On the outside, each of the first hinged frames (445) is hinged with a first hinged rod (446), one end of the first hinged rod (446) away from the first hinged frame (445) is hinged to a sliding frame (448) on the top inner wall of the arc-shaped member (447), one end of the first hinged rod (446) away from the first hinged frame (445) and the sliding frame (448) are slidably matched with each other, and a second hinged frame (449) is provided on the bottom inner wall of the arc-shaped member (447) The second articulated frame (449) is hinged with a second articulated rod (450), one end of the second articulated rod (450) away from the second articulated frame (449) is hinged on a third articulated frame (451), the side end of the third articulated frame (451) is connected to the side end of the sliding cylinder (442), the second articulated rod (450) and the first articulated rod (446) are cross-arranged, and the middle part of the second articulated rod (450) is articulated with the middle part of the first articulated rod (446).

5. A piston pin drilling device according to claim 4, characterized in that: The switching assembly (5) comprises a switching rod (51), the switching rod (51) is initially in an inclined state, the switching rod (51) is located in a rotation groove (52) on one of the brackets (32), the middle part of the switching rod (51) is rotationally connected to the inner wall of the rotation groove (52), one end of the switching rod (51) close to the trigger column (441) is hinged to the top of the trigger block (415) through an L-shaped connecting rod (53), and the other end of the switching rod (51) is hinged to a connecting frame (54 ), the side of the connecting frame (54) away from the switching rod (51) is clamped on the side end of the connecting sleeve (55), the upper and lower ends of the connecting sleeve (55) are respectively connected to the center of a switching bevel gear (56), the two switching bevel gears (56) and the connecting sleeve (55) are spline-connected to the switching shaft (57), the upper and lower ends of the switching shaft (57) are respectively rotatably connected to a fixing frame (58), and the side end of the fixing frame (58) is connected to the side wall of the adjacent bracket (32) , wherein a driving bevel gear (59) is rotatably connected to the fixed frame (58) located at the top, and the driving bevel gear (59) is located on the side of the switching bevel gear (56) away from the bracket (32), and the tooth groove end of the driving bevel gear (59) meshes with the tooth groove end of the switching bevel gear (56), and the center of the driving bevel gear (59) is rotatably connected to the fixed frame (58), and a second transmission belt (60) is sleeved on the outer side of the center of the driving bevel gear (59), and the other end of the second transmission belt (60) is sleeved on the outer side of the rotation connection between the reciprocating threaded rod (33) and the driving frame (31), and a driving motor (61) is provided below the fixed frame (58) located below, and the output end of the driving motor (61) is connected to the bottom of the switching shaft (57), and a linkage bevel gear (63) is rotatably connected to the fixed frame (58) located below through a linkage shaft (62), and the side end of the linkage bevel gear (63) can mesh with the tooth groove end of the switching bevel gear (56).

6. A piston pin drilling device according to claim 5, characterized in that: The linkage assembly (7) comprises a conversion gear (71), the conversion gear (71) is sleeved on the linkage shaft (62) and is located below the fixing frame (58), a control bevel gear (72) is meshed on a side of the conversion gear (71) close to the bracket (32), the center of the control bevel gear (72) is rotatably connected to a locking frame (73), the side end of the locking frame (73) is connected to the side wall of the bracket (32), a toggle crank (74) is provided at the bottom of the control bevel gear (72), a clamping sleeve (75) is provided on a side of the toggle crank (74) close to the bracket (32), and the side end of the clamping sleeve (75) is connected to the side wall of the bracket (32), A striking rod (77) is movably connected to the sleeve (75) via a telescopic spring (76). The striking rod (77) and the sleeve (75) are slidably matched with each other. An elastic block (78) is provided on the side wall of the striking rod (77). One end of the elastic block (78) away from the striking rod (77) is embedded in an opening (79) on the side wall of the sleeve (75). When the control bevel gear (72) rotates, the end of the crank (74) away from the control bevel gear (72) can be driven to contact the end of the elastic block (78), so that the elastic block (78) is separated from the opening (79). The top of the striking rod (77) is located directly below the switching rod (51).

7. A piston pin drilling device according to claim 6, characterized in that: The processing assembly (8) comprises a control shaft (81), the control shaft (81) being arranged at the side end of the striking rod (77), the control shaft (81) being arranged vertically at the middle center of the workbench (1), the top of the control shaft (81) being rotatably connected to the bottom of the top of the workbench (1), a control crank (82) being sleeved on the control shaft (81), a control gear (83) being arranged directly below the control crank (82), the center of the control gear (83) being rotatably connected to the bottom of the workbench (1), the upper and lower sides of the control gear (83) being meshed with linkage toothed rods (84), the two linkage toothed rods (84) being arranged in mirror-image orientation, the linkage toothed rods (84) and the workbench (1) being slidably matched with each other, and the side of each linkage toothed rod (84) away from the control gear (83) being engaged with the processing frame (85) The processing frame (85) is connected to the side end, the top of the processing frame (85) slides through the top of the workbench (1) and is located outside the workbench (1), the processing frame (85) and the workbench (1) are slidably matched with each other, a horizontally arranged second drilling machine (86) is provided on the side of the processing frame (85) close to the center of the workbench (1), the output end of the second drilling machine (86) is arranged toward the center of the workbench (1), and a through hole (87) for the second drilling machine (86) to pass through is opened on the arc plate (2), a moving track (88) is provided on the top of one end of the linkage toothed groove rod (84) close to the control gear (83), the other end of the control crank (82) is embedded in the moving track (88) and slidably matched with it, and a third transmission belt (89) is sleeved on the outer side of the control shaft (81), and the other end of the third transmission belt (89) is sleeved on the outer side of the linkage shaft (62).

8. A method for using a piston pin drilling device, using the piston pin drilling device according to any one of claims 1 to 7, characterized in that: The steps include: S1: The staff first places the piston pin vertically between the two arc plates (2) and performs a preliminary limit on it. Then, the staff controls the switching assembly (5) to work, thereby driving the reciprocating threaded rod (33) to rotate, thereby driving the rectangular frame (34) to approach the piston pin along the direction of the sliding rod (35), thereby driving the first drilling machine (444) to drill a hole in the middle of the piston pin, and clamping the limit arc plate (36) on the end face of the piston pin to further stabilize the position of the piston pin. When the hole is drilled, the bottom of the trigger rod (429) enters the rigid The inner wall of the hole is opened, so that the two trigger rods (429) are squeezed during the movement, so that the two trigger rods (429) are close to each other to squeeze the stretch spring (430), thereby driving the two control tooth groove plates (428) to approach each other, so that the matching gear (425) rotates synchronously, and the half gear (423) is rotated synchronously through the first transmission belt (427), thereby driving the L-shaped tooth groove plate (420) meshed with it to move in a direction away from the control block (413), and after the second spring telescopic rod (421) is retracted into place, The L-shaped tooth groove plate (420) drives the two fixed tooth groove plates (417) to move away from each other in the direction of the slot (418), and causes the compression spring (419) to contract, thereby disengaging from the saw teeth (416), so that the control block (413) drives the trigger block (415) to move upward through the matching rod (414) under the release of the first spring telescopic rod (412), so that the trigger column (441) moves upward along the sliding cylinder (442) synchronously, and in the process of moving upward, the first hinge rod (446) and the first hinge frame (445) are connected through the carrier plate (443) and the first hinge frame (445). The two hinged rods (450) deflect relative to each other, so that the plurality of arc-shaped members (447) are all moved away from the trigger column (441), thereby contacting the inner wall of the newly opened hole, and after the half gear (423) is disengaged from the L-shaped toothed plate (420), the fixed toothed plate (417) is reset under the action of the compression spring (419), so that the toothed ends of the two fixed toothed plates (417) are clamped on the saw teeth (416) on both sides of the control block (413), thereby fixing the position of the control block (413) and simultaneously fixing the piston pin; S2: By controlling the driving motor (61) to work, the switching bevel gear (56) drives the driving bevel gear (59) meshing with it to rotate synchronously, and the reciprocating threaded rod (33) is driven to rotate through the second transmission belt (60), and then the hole opening work in the middle is completed, and the piston pin is fixed from the inside. When the trigger block (415) moves up, the switching rod (51) is driven to deflect in the rotating groove (52) through the L-shaped connecting rod (53), and then the connecting sleeve (55) is driven to move down along the switching shaft (57) through the connecting frame (54), thereby driving the switching bevel gear (56) to disengage from the driving bevel gear (59), so that the reciprocating threaded rod (33) stops rotating, and the side end of the switching bevel gear (56) at the bottom is meshed with the side end of the linkage bevel gear (63), thereby driving the linkage shaft (62) to rotate, and through the third transmission belt (89), the control shaft (81) and the control crank (82) are driven to rotate synchronously, and under the cooperation of the moving track (88), one of the processing frames (85) is driven to reciprocate toward the center of the workbench (1), and through the cooperation of the linkage toothed rod (84) and the control gear (83), the two processing frames (85) and the second drilling machine (86) are synchronously driven to reciprocate, so as to facilitate drilling holes on both sides of the piston pin through the through hole (87); S3: After the control crank (82) drives the two processing frames (85) to perform a reciprocating movement, the conversion gear (71) drives the control bevel gear (72) to rotate one circle, thereby the end of the crank (74) is abutted against the elastic block (78) to make it disengage from the opening (79), and the striking rod (77) slides along the clamping sleeve (75) under the action of the telescopic spring (76), thereby driving the switching rod (51) to deflect and help it to reset. Since the bottom of the sawtooth (416) is arranged obliquely, the control block (413) is driven to move downward between the two fixed tooth groove plates (417), and the first spring rod is stretched, and the switching rod (51) is reset. After that, the switching bevel gear (56) located above is driven to mesh with the driving bevel gear (59) again, thereby driving the reciprocating threaded rod (33) to rotate, thereby driving the first drilling machine (444) to disengage from the piston pin. When the trigger rod (429) is disengaged, it is reset by the tension spring (430), and during the reset process, the half gear (423) is driven to reset. Under the action of the second spring telescopic rod (421), the L-shaped toothed plate (420) is reset in coordination. After the half gear (423) is disengaged from the meshing with the L-shaped toothed plate (420), the L-shaped toothed plate (420) is reset under the action of the second spring telescopic rod (421), which is convenient for subsequent work.

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