High-precision punching equipment for machining piston pin

Abstract

The utility model discloses high-precision punching equipment for processing a piston pin, which belongs to the technical field of piston pins, comprises a main cabinet and an auxiliary cabinet, and is characterized in that a middle shaft is fixedly arranged at the upper part of the main cabinet, a turntable is rotatably arranged at the periphery of the middle shaft, a positioning part is fixedly arranged at the upper part of the turntable, and a hanging bracket is fixedly arranged above the turntable; a first suspension cylinder is fixedly arranged on the right side of the lower portion of the hanging bracket, a second suspension cylinder is fixedly arranged on the left side of the lower portion of the hanging bracket, motors are fixedly arranged at the output ends of the first suspension cylinder and the second suspension cylinder, drill bits are fixedly arranged at the ends of output shafts of the motors, and the drill bits correspond to the positioning parts in position; a first material channel is fixedly arranged on the left side of the vibration disc, a vertical plate is fixedly arranged on the right side of the upper portion of the main cabinet, a second material channel is arranged on the upper portion of the vertical plate, the front end of the second material channel corresponds to the first material channel in position, and the rear end of the second material channel corresponds to the positioning portion in position.

Description

Technical Field

[0001] This utility model relates to the field of piston pin technology, specifically a high-precision drilling device for processing piston pins. Background Technology

[0002] Piston pins are cylindrical pins installed on the piston skirt and are an important structure connecting the piston and connecting rod. From raw materials to finished products, they require multiple processes such as cutting, rough grinding, fine grinding, drilling, grooving, and polishing. Among them, the drilling process is mainly to drill a through hole along the radial direction of the piston pin. Piston pins are very small and difficult to position accurately. The matching drill bits are also very fine, which will overheat in a short time and make it difficult to work properly. If we refer to the traditional equipment for drilling large workpieces, we fix the workpiece and then drill all the way to the bottom. It is easy to have low drilling accuracy due to inaccurate positioning and drill bit overheating. Based on this situation, how to improve the drilling accuracy of piston pins has become an urgent problem for relevant technicians. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides a high-precision drilling device for processing piston pins.

[0004] A high-precision drilling device for processing piston pins includes a main cabinet and an auxiliary cabinet. The main cabinet has a central shaft fixedly mounted on its upper part, a turntable rotatably mounted around the central shaft, a positioning part fixedly mounted on the upper part of the turntable, a hanger fixedly mounted above the turntable, a first suspension cylinder fixedly mounted on the lower right side of the hanger, and a second suspension cylinder fixedly mounted on the lower left side of the hanger. Motors are fixedly mounted at the output ends of both the first and second suspension cylinders, and a drill bit is fixedly mounted at the end of the output shaft of the motor, with the drill bit corresponding to the position of the positioning part. A vibratory feeder is installed inside the auxiliary cabinet, with a first material channel fixedly mounted on the left side of the vibratory feeder. A vertical plate is fixedly mounted on the upper right side of the main cabinet, with a second material channel mounted on the upper part of the vertical plate. The front end of the second material channel corresponds to the position of the first material channel, and the rear end of the second material channel corresponds to the position of the positioning part.

[0005] Furthermore, the number of positioning parts is 8 groups, and the 8 groups of positioning parts are arranged in a circular array.

[0006] Furthermore, the positioning part includes a lower block, a middle block is fixedly disposed on the upper part of the lower block away from the central axis, an upper block is fixedly disposed on the upper part of the middle block away from the central axis, a top block is fixedly disposed on the upper part of the middle block near the central axis, a through hole is provided through the upper block at a position corresponding to the top block, and a pressure block is fixedly disposed on the upper block near the central axis and above the through hole.

[0007] Furthermore, a first feeding cylinder is fixedly installed at the upper front end of the upright plate, a push plate is fixedly installed at the output end of the first feeding cylinder, a limiting seat is fixedly installed behind the first feeding cylinder, a sliding groove is provided at the lower part of the limiting seat corresponding to the push plate, the push plate, the sliding groove and the second material channel are parallel to each other, a second feeding cylinder is fixedly installed on the right side of the rear end of the upright plate, the output end of the second feeding cylinder is perpendicular to the second material channel, and the output end of the second feeding cylinder passes through the upright plate.

[0008] Furthermore, a surrounding plate is fixedly installed around the turntable, a first positioning cylinder is fixedly installed at the rear end of the surrounding plate, and a second positioning cylinder is fixedly installed at the left end of the surrounding plate. A push rod is fixedly installed at the output end of both the first and second positioning cylinders, and the push rod passes through the surrounding plate and corresponds to the position of the positioning part.

[0009] Furthermore, a liquid tank is fixedly installed behind the enclosure, and a plastic tube is installed on one side of the liquid tank, with the free end of the plastic tube located on one side of the positioning part at the rear end.

[0010] Furthermore, a feeding cylinder is fixedly installed at the front of the central shaft, and a push rod is fixedly installed at the output end of the feeding cylinder. The push rod is positioned corresponding to the positioning part, and a material box is installed at the front of the main cabinet at the position corresponding to the feeding cylinder.

[0011] The advantages of this high-precision drilling device for processing piston pins are as follows:

[0012] 1. The connection between the first and second material channels, combined with the cooperation of the first and second feeding cylinders, effectively ensures the feeding accuracy. The positioning part provides a good structural foundation for the stable placement of the piston pin. The cooperation of the first positioning cylinder, the second positioning cylinder, and the push rod with the push block effectively ensures the stability of the piston pin during the drilling process, thereby effectively improving the drilling accuracy of the piston pin.

[0013] 2. The design of the first suspension cylinder, the second suspension cylinder, and the corresponding double drill bit allows the piston pin to be drilled in two stages, effectively reducing the workload of the drill bit. The coolant tank and its internal coolant, combined with the plastic tube, effectively ensure the cooling of the corresponding drill bit and the piston pin, effectively preventing the drill bit from overheating and further improving the drilling accuracy of the piston pin. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below, but this is not a limitation on the protection scope of this utility model.

[0015] Figure 1 This is a schematic diagram of the external main view structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal main structure of this utility model (the positioning cylinder and the positioning part at the front and rear positions are not shown).

[0017] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0018] Figure 4 This is a top enlarged view of the feeding structure of this utility model;

[0019] Figure 5 This is a top view of the turntable of this utility model.

[0020] Figure 6 This is a top-view enlarged structural schematic diagram of the positioning part of this utility model;

[0021] Figure 7 This is a top view of the hanger structure of this utility model.

[0022] Among them, 1-hanger, 2-second suspension cylinder, 3-motor, 4-enclosure panel, 5-main cabinet, 6-auxiliary cabinet, 7-drill bit, 8-central shaft, 9-turntable, 10-vibrating plate, 11-first material channel, 12-discharge cylinder, 13-upper block, 14-pressing block, 15-top block, 16-middle block, 17-lower block, 18-vertical plate, 19-second feeding cylinder, 20-limiting seat, 21-first feeding cylinder, 22-second material channel, 23-push plate, 24-first positioning cylinder, 25-top rod, 26-second positioning cylinder, 27-material box, 28-positioning part, 29-plastic tube, 30-liquid tank, 31-first suspension cylinder. Detailed Implementation

[0023] To make the description clearer, the high-precision drilling equipment for processing piston pins according to this utility model will be further described in conjunction with the accompanying drawings.

[0024] A high-precision drilling device for processing piston pins includes a main cabinet 5 and an auxiliary cabinet 6. The main cabinet 5 has a central shaft 8 fixedly mounted on its upper part, a turntable 9 rotatably mounted around the central shaft 8, a positioning part 28 fixedly mounted on the upper part of the turntable 9, a hanger 1 fixedly mounted above the turntable 9, a first suspension cylinder 31 fixedly mounted on the lower right side of the hanger 1, and a second suspension cylinder 2 fixedly mounted on the lower left side of the hanger 1. Motors 3 are fixedly mounted at the output ends of both the first and second suspension cylinders 31 and 2. A drill bit 7 is fixedly mounted at the end of the output shaft of the motor 3, and the drill bit 7 corresponds to the position of the positioning part 28. A vibratory feeder 10 is installed inside the auxiliary cabinet 6, a first material channel 11 is fixedly mounted on the left side of the vibratory feeder 10, a vertical plate 18 is fixedly mounted on the upper right side of the main cabinet 5, and a second material channel 22 is mounted on the upper part of the vertical plate 18. The front end of the second material channel 22 corresponds to the position of the first material channel 11, and the rear end of the second material channel 22 corresponds to the position of the positioning part 28.

[0025] Furthermore, the number of positioning parts 28 is 8 groups, and the 8 groups of positioning parts 28 are arranged in a circular array.

[0026] Furthermore, the positioning part 28 includes a lower block 17, a middle block 16 is fixedly disposed on the upper part of the lower block 17 away from the central axis 8, an upper block 13 is fixedly disposed on the upper part of the middle block 16 away from the central axis 8, a top block 15 is fixedly disposed on the upper part of the middle block 16 near the central axis 8, a through hole is provided inside the upper block 13 corresponding to the position of the top block 15, and a pressure block 14 is fixedly disposed on the side of the upper block 13 near the central axis 8 and above the through hole.

[0027] Furthermore, a first feeding cylinder 21 is fixedly installed at the upper front end of the upright plate 18, a push plate 23 is fixedly installed at the output end of the first feeding cylinder 21, a limiting seat 20 is fixedly installed behind the first feeding cylinder 21, a sliding groove is provided at the lower part of the limiting seat 20 corresponding to the position of the push plate 23, the push plate 23, the sliding groove and the second material channel 22 are parallel to each other, a second feeding cylinder 19 is fixedly installed on the right side of the rear end of the upright plate 18, the output end of the second feeding cylinder 19 is perpendicular to the second material channel 22, and the output end of the second feeding cylinder 19 passes through the upright plate 18.

[0028] Furthermore, a surrounding plate 4 is fixedly installed around the turntable 9, a first positioning cylinder 24 is fixedly installed at the rear end of the surrounding plate 4, and a second positioning cylinder 26 is fixedly installed at the left end of the surrounding plate 4. A push rod 25 is fixedly installed at the output end of both the first positioning cylinder 24 and the second positioning cylinder 26. The push rod 25 passes through the surrounding plate 4 and corresponds to the position of the positioning part 28.

[0029] Furthermore, a liquid tank 30 is fixedly installed behind the enclosure 4, and a plastic tube 29 is installed on one side of the liquid tank 30, with the free end of the plastic tube 29 located on one side of the positioning part 28 at the rear end.

[0030] Furthermore, a feeding cylinder 12 is fixedly installed at the front of the central shaft 8, and a push rod 25 is fixedly installed at the output end of the feeding cylinder 12. The push rod 25 corresponds to the position of the positioning part 28. A material box 27 is installed at the front of the main cabinet 5 at the position corresponding to the feeding cylinder 12.

[0031] The working principle of this high-precision drilling device for processing piston pins is as follows: The piston pin to be drilled is poured into the vibratory plate 10. The vibration of the vibratory plate 10 causes the piston pin to move sequentially into the first material channel 11, and then into the second material channel 22. The output end of the first feeding cylinder 21 pushes the push plate 23 to move backward along the limiting seat 20. The push plate 23 pushes the piston pin that first moves into the second material channel 22 to the rear end of the second material channel 22. The output end of the second feeding cylinder 19 pushes the piston pin at the rear end of the second material channel 22... At this point, the piston pin is positioned at the nearest positioning part 28, and remains stably within the through hole on the upper part of the middle block 16 and inside the upper block 13. The turntable 9 rotates intermittently until the piston pin rotates directly below the first suspension cylinder 31. The first positioning cylinder 24 pushes the push rod 25 forward, and the push rod 25 cooperates with the top block 15 to clamp the piston pin. The output end of the first suspension cylinder 31 pushes the motor 3 and drill bit 7 below it to move downward. At the same time, the output shaft of the motor 3 drives the drill bit 7 to rotate until the lower end of the drill bit 7 drills into the piston pin to a depth of radius. At this time, the output ends of the first positioning cylinder 24 and the first suspension cylinder 31 are reset. During this process, the free end of the plastic tube 29 continuously pours coolant from the liquid tank 30 onto the piston pin and drill bit 7 to prevent the drill bit 7 from overheating. The turntable 9 continues to rotate until the piston pin rotates to directly below the second suspension cylinder 2. The push rod 25 at the position of the second positioning cylinder 26 cooperates with the push block 15 to clamp the piston pin. The output end of the second suspension cylinder 2 and its lower motor 3 and drill bit 7 cooperate to drill at the position of the already drilled hole. The remaining radius depth is drilled through, and the output ends of the second positioning cylinder 26 and the second suspension cylinder 2 are reset. The turntable 9 continues to rotate until the piston pin rotates to the front of the feeding cylinder 12. The output end of the feeding cylinder 12 pushes the push rod 25 forward, pushing out the piston pin that has been drilled. The pushed-out piston pin falls into the material box 27, thus completing the drilling of one piston pin. The rotation of the turntable 9 and the cooperation of related structures make the above process continue to be carried out, and subsequent piston pins are continuously drilled.

[0032] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A high-precision punching device for machining a piston pin, comprising a main cabinet, a sub-cabinet, characterized in that: The main cabinet upper part is fixedly provided with a middle shaft, the middle shaft is peripherally rotatably provided with a rotating disc, the rotating disc upper part is fixedly provided with a positioning part, the rotating disc upper part is fixedly provided with a hanging bracket, the hanging bracket lower part right side is fixedly provided with a first suspension air cylinder, the hanging bracket lower part left side is fixedly provided with a second suspension air cylinder, the first suspension air cylinder and the second suspension air cylinder output ends are fixedly provided with motors, the motor output shaft ends are fixedly provided with drill bits, the drill bits correspond to the positions of the positioning part, the vice cabinet interior is provided with a vibrating disc, the vibrating disc left side is fixedly provided with a first material channel, the main cabinet upper part right side is fixedly provided with a vertical plate, the vertical plate upper part is provided with a second material channel, the second material channel front end corresponds to the position of the first material channel, and the second material channel rear end corresponds to the position of the positioning part.

2. A high precision hole punching apparatus for machining a piston pin as claimed in claim 1, wherein, The number of the positioning parts is 8 groups, and the 8 groups of positioning parts are arranged in an annular array.

3. A high precision piercing apparatus for machining a piston pin as claimed in claim 1, wherein, The positioning part includes a lower block, a middle block is fixedly arranged on the upper part of the lower block away from one end of the middle shaft, an upper block is fixedly arranged on the upper part of the middle block away from one end of the middle shaft, a top block is fixedly arranged on the upper part of the middle block close to one end of the middle shaft, a through hole is arranged in the upper block interior and corresponds to the position of the top block, and a pressing block is fixedly arranged on the upper block close to one side of the middle shaft and above the through hole.

4. A high precision hole punching apparatus for machining a piston pin as claimed in claim 1, wherein, The vertical plate upper part front end is fixedly provided with a first feeding air cylinder, the first feeding air cylinder output end is fixedly provided with a push plate, the first feeding air cylinder rear side is fixedly provided with a limiting seat, the limiting seat lower part is provided with a sliding groove corresponding to the position of the push plate, the push plate, the sliding groove and the second material channel are parallel to each other, the vertical plate rear end right side is fixedly provided with a second feeding air cylinder, the second feeding air cylinder output end is perpendicular to the second material channel, and the second feeding air cylinder output end penetrates the vertical plate.

5. A high precision hole punching apparatus for machining a piston pin as claimed in claim 1, wherein, The rotating disc periphery is fixedly provided with a surrounding plate, the surrounding plate rear end is fixedly provided with a first positioning air cylinder, the surrounding plate left end is fixedly provided with a second positioning air cylinder, the first positioning air cylinder and the second positioning air cylinder output ends are fixedly provided with jacks, and the jacks penetrate the surrounding plate and correspond to the positions of the positioning parts.

6. A high precision hole punching apparatus for machining a piston pin as claimed in claim 5, wherein, The surrounding plate rear side is fixedly provided with a liquid barrel, one side of the liquid barrel is provided with a plastic pipe, and the free end of the plastic pipe is located on one side of the rear end positioning part.

7. A high precision hole punching apparatus for machining a piston pin as claimed in claim 1, wherein, The middle shaft front part is fixedly provided with a feeding air cylinder, the feeding air cylinder output end is fixedly provided with a jack, the jack corresponds to the position of the positioning part, and the main cabinet front part is provided with a material box corresponding to the position of the feeding air cylinder.

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