A production and processing technology of piston

Abstract

The invention discloses a production and processing technology of a piston, including stopper processing, ring groove profile line and head processing and pin hole processing; the invention can process the stopper, pin hole, ring groove, profile line and head of the piston by utilizing three groups of equipment, namely a stopper integrated machine, a pin hole processing machine and a piston integrated processing machine; the piston integrated processing machine integrates the ring groove, head and profile line processing into one device, thereby reducing the number of processing equipment used and greatly reducing resource waste; the process does not need to utilize the traditional hydraulic ejector method to fix it, and the pneumatic pull rod method is adopted to greatly reduce the hydraulic power consumption, reduce the interference of the center hole ejector and improve the product quality; by arranging a tightening mechanism in the pin hole processing machine body to cooperate with a supporting mechanism, the inclination angle of the tightening frame can be adjusted by twisting a rotating ring to adapt to the piston body with an irregular top shape.

Description

Technical Field

[0001] The invention relates to the technical field of piston production, in particular to a production and processing technology of a piston. Background Art

[0002] The piston is a key part of the engine and plays an extremely important role in the engine starting. The piston is generally used to withstand gas pressure and allows the connecting rod to drive the crankshaft to rotate through the piston pin. The processing of small-cylinder piston pin holes is generally carried out through a conventional fixture for active connection and positioning, and then processed on a boring machine, while passing coolant for cooling during processing.

[0003] The existing piston processing technology usually processes the piston ring groove, profile and head separately on different machine tools, which requires the use of multiple sets of equipment, which not only increases the equipment investment cost, but also increases the processing steps, resulting in a waste of resources. In addition, in the traditional ring groove processing process, the piston body is usually fixed by a hydraulic ejector, which increases the hydraulic power consumption.

[0004] In addition, during the existing pin hole processing of the piston, a push rod is usually used to tighten the head of the piston to fix it, but the existing piston head is usually irregular in shape, which affects the tightening effect and reduces the piston processing accuracy. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the existing piston processing technology usually processes the ring groove, mold line and head of the piston separately on different machine tools, which requires the use of multiple sets of equipment, which not only increases the equipment investment cost, but also increases the processing steps, resulting in waste of resources. In addition, in the traditional ring groove processing process, the piston body is usually fixed by a hydraulic ejector, which increases the hydraulic power consumption. A piston production and processing technology is proposed.

[0006] The purpose of the present invention can be achieved by the following technical solution: A production process of a piston comprises the following steps:

[0007] S1, stopper processing: connect the piston body to the pneumatic three-jaw chuck of the stopper integrated machine, and then drive the stopper turning tool to process it;

[0008] S2, pin hole processing: after the piston body is processed with the stopper, it is processed with the pin hole. In this process, it is first placed on the mounting plate of the pin hole processing machine, the outer surface of the stopper of the piston body is fitted with the outer surface of the support block, and then it is fixed by the clamping mechanism, and then the driving seat drives the piston to move in the direction of the rough boring tool, the rough boring tool penetrates the two groups of pin holes, and rotates to perform rough processing on the two groups of pin holes, and then moves to the fine boring slotting tool after the processing is completed, and the fine boring slotting tool enters the pin hole to perform fine processing on it, and in this process, the position of the fine boring slotting tool can be changed by adjusting the tool holder, and then the retaining ring groove inside the pin hole is processed;

[0009] In the process of fixing the piston body, the tightening cylinder is first started to drive the push rod to push the mounting plate downward. In the process of fixing, the operator can adjust the inclination angle of the tightening frame by twisting the rotating ring to adapt to the piston body with an irregular top. In the process of rotating the rotating ring, since the first tooth is meshed with the second tooth, the two groups of threaded columns rotate in the same direction at the same time, and the internal threads of the two groups of threaded holes rotate in opposite directions. Therefore, the two groups of threaded rods move in opposite directions along the axial direction of the central axis of the threaded rods, so that the tightening frame is inclined to one side. Then the push rod pushes the tightening frame downward again, which increases the number of balls in contact with the piston body, thereby improving the fixing effect.

[0010] In the process of the tightening frame moving downward, both the electromagnet 1 and the electromagnet 2 are running, and the magnetism of the two is the same. Therefore, the electromagnet 1 pushes the movable column downward to squeeze the spring under the magnetic repulsion force of the electromagnet 2, and makes the surrounding connecting rods 2 push the slider and the support block to one side until the outer surface of the support block is completely in contact with the inner surface of the piston body. Therefore, it is possible to support piston bodies of different specifications and improve the supporting effect. In addition, the magnetic repulsion force between the electromagnet 1 and the electromagnet 2 and the elastic force of the spring 1 can be used to buffer the vibration of the piston body during the processing. In this process, the movable column is located on both sides of the pin hole protrusion, which makes it easy for the operator to position the piston body when placing it. At the same time, the elastic force of the spring 2 and the torsion spring cooperate with each other to further absorb the vibration generated by the piston body during the processing, thereby extending the service life of the internal components of the device.

[0011] S3, ring groove, profile and head processing: Place the piston body with the pin hole processed in the piston comprehensive processing machine for head, profile and ring groove processing. First, place the piston body between the ring groove cutter, head cutter and fine turning cutter of the piston comprehensive processing machine. After the fixation is completed, the start rod pushes the stop seat and the pull rod into the interior of the piston body. At this time, the limit hole opened on the outer surface of the pull rod corresponds to the unfinished pin hole. Then use the pin to penetrate the pin hole and the limit hole to fix the pull rod and the piston body relatively. Then start the pull rod to pull the piston body backward to fix it. The outer surface of the stop seat and the stop The mouths fit together, and the driving seat drives the piston body to rotate. In this process, the matching block and the profile mold are always in contact, and the change of the profile mold drives the fine turning tool to change. The fine turning tool is used to process the profile of the piston body, the head tool is used to process the head of the piston body, and the ring groove tool is used to process its ring groove. Therefore, the equipment integrates the processing of the ring groove, the head and the profile as a whole, which greatly reduces the waste of resources. In addition, the process does not need to use the traditional hydraulic ejector method to fix it. The use of the pneumatic pull rod method greatly reduces the hydraulic power consumption, reduces the interference of the center hole ejector, and improves the product quality.

[0012] S4, piston oil hole processing: After the piston body is processed with stopper, pin hole, ring groove, profile and head, the piston body is placed under the drilling machine and then drilled with the drilling machine to process the piston oil hole.

[0013] Furthermore, the stopper integrated machine includes a stopper integrated machine body, a pneumatic three-jaw chuck, a movable seat and a stopper turning tool, a pneumatic three-jaw chuck for fixing a piston ring is provided on one side of the stopper integrated machine body, a movable seat is provided on one side of the stopper integrated machine body at a position corresponding to the pneumatic three-jaw chuck, and a stopper turning tool is provided on the upper outer surface of the movable seat.

[0014] Furthermore, the piston comprehensive processing machine includes a piston comprehensive processing machine body, a driving seat one, a profile mold, a stop seat, a pull rod, a limit hole and a movable seat two, the upper end outer surface of the piston comprehensive processing machine body is provided with the movable seat two, and the end outer surfaces of the movable seat two are respectively provided with a ring groove cutter, a head cutter, a fine turning tool and a matching block, and the fine turning tool is connected to the matching block, the one side outer surface of the piston comprehensive processing machine body is provided with a driving seat one, and the output end of the driving seat one is sequentially provided with the profile mold, the stop seat and the pull rod, and a limit hole is opened on the outer surface of one side of the pull rod.

[0015] Furthermore, the pin hole processing machine includes a pin hole processing machine body, a second drive seat, a fixed seat and a tool seat, a drive seat is provided on one side outer surface of the pin hole processing machine body, and a mounting groove is opened on one side outer surface of the drive seat, the tool seat is movably connected inside the mounting groove, and a fine boring slotting tool is provided on one side outer surface of the tool seat, a movable seat and a fixed seat are provided on the upper end outer surface of the pin hole processing machine body from left to right, and a rough boring tool is provided on one side outer surface of the fixed seat, a support mechanism is provided on the upper end outer surface of the movable seat near the middle, and a support frame is fixedly connected to the upper end outer surface of the movable seat near one side, and a tightening mechanism is provided on the upper end outer surface of the support frame.

[0016] The cam is provided with a plurality of connecting rods, and the connecting rods are connected to the mounting plate by a plurality of connecting rods, and the connecting rods are connected to the mounting plate by a plurality of connecting rods.

[0017] An annular groove is provided on the outer surface of the upper end of the tightening frame, and the inner part of the annular groove is rotatably connected to a limiting ring, the outer surface of the upper end of the limiting ring is fixedly connected to a rotating ring, and the outer surface of the threaded column is fixedly connected to a plurality of groups of teeth 1 in an annular shape and equidistantly near the top end, and the inner surface of the rotating ring is fixedly connected to a plurality of groups of teeth 2 in an annular shape and equidistantly at positions corresponding to the teeth 1, and the teeth 1 are meshed with the teeth 2.

[0018] The cam is provided with a plurality of springs, each of which ...

[0019] Furthermore, the positioning member includes a guide groove, a guide rod, a second spring, a movable block, a positioning column and a torsion spring. A guide groove is provided on the outer surface of the upper end of the support block, and the guide rod is fixedly connected to the inside of the guide groove. Springs are sleeved on the outer surfaces of the guide rods near both ends, and one end of the second spring is fixedly connected to the guide groove, and the other end is fixedly connected to the movable block. The movable block is slidably connected to the guide rod, and the outer surface of the upper end of the movable block is rotatably connected to the positioning column. A torsion spring is arranged on the outer surface of the positioning column near the bottom end, and one end of the torsion spring is fixedly connected to the positioning column, and the other end is fixedly connected to the movable block.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the present invention, by using three sets of equipment, namely, a stopper integrated machine, a pin hole processing machine and a piston integrated processing machine, the stopper, pin hole, ring groove, mold line and head of the piston can be processed. The piston integrated processing machine integrates the processing of ring groove, head and mold line, thereby reducing the number of processing equipment used and greatly reducing resource waste. In addition, the process does not need to use the traditional hydraulic ejector method to fix it. The use of the pneumatic pull rod method greatly reduces the hydraulic power consumption, reduces the interference of the center hole ejector, and improves the product quality.

[0022] 2. In the present invention, a tightening mechanism and a supporting mechanism are arranged in the pin hole processing machine body to cooperate with each other. In the process of fixing the piston body, the inclination angle of the tightening frame can be adjusted by twisting the rotating ring to adapt to the piston body with an irregular top shape. In the process of rotation of the rotating ring, since the tooth one is meshed with the tooth two, the two groups of threaded columns rotate in the same direction at the same time, and the internal threads of the two groups of threaded holes have opposite rotation directions. Therefore, the two groups of threaded rods move in opposite directions along the axial direction of the central axis of the threaded rods, so that the tightening frame is inclined to one side, and then the pushing rod pushes the tightening frame downward again, increasing the number of balls in contact with the piston body, thereby improving the fixing effect, and being able to support piston bodies of different specifications, improving the supporting effect, and being able to use the magnetic repulsion force between the electromagnet one and the electromagnet two and the elastic force of the spring one to buffer the vibration of the piston body during the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0024] Figure 1 It is a processing flow chart of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall structure of the stopper integrated machine of the present invention;

[0026] Figure 3 It is a schematic diagram of the overall structure of the piston comprehensive processing machine of the present invention;

[0027] Figure 4 It is a schematic diagram of the overall structure of the pin hole processing machine of the present invention;

[0028] Figure 5 It is a combined view of the support mechanism and the limiting member of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the support mechanism of the present invention;

[0030] Figure 7 For the present invention Figure 6 A magnified image of area A

[0031] Figure 8 It is a structural schematic diagram of the tightening mechanism of the present invention.

[0032] 100, stopper integrated machine body; 101, pneumatic three-jaw chuck; 102, moving seat one; 103, stopper turning tool; 200, piston integrated processing machine body; 201, driving seat one; 202, profile line mold; 203, stopper seat; 204, pull rod; 205, limit hole; 206, moving seat two; 207, ring groove cutter; 208, head cutter; 209, fine turning tool; 210, matching block; 300, pin hole processing machine body; 301, driving seat two; 302, fixed seat; 303, tool holder; 304, mounting groove; 305, rough boring tool; 306, fine boring slot cutter; 307, support frame; 308, tightening mechanism; 309, tightening cylinder; 310, push rod; 311, mounting cylinder; 312, mounting plate; 313, threaded column; 314, connecting tube; 315, top tightening frame; 316, ball bearing; 317, threaded hole; 318, limit block; 319, annular groove; 320, limit ring; 321, rotating ring; 322, tooth 2; 323, supporting mechanism; 324, fixed plate; 325, supporting block; 326, electromagnet 1; 327, electromagnet 2; 328, movable column; 329, connecting rod 1; 330, connecting rod 2; 331, slide groove; 332, slider; 333, movable groove; 334, spring 1; 335, positioning member; 336, guide groove; 337, guide rod; 338, spring 2; 339, movable block; 340, positioning column; 341, torsion spring; 342, movable seat; 343, tooth 1. DETAILED DESCRIPTION

[0033] 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 technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1:

[0035] like Figure 1-8 As shown, the present invention provides a piston production and processing equipment, wherein the stopper processing workpiece is a stopper comprehensive machine, the pin hole processing workpiece is a pin hole processing machine, and the ring groove, profile and head processing workpiece is a piston comprehensive processing machine;

[0036] The stopper integrated machine comprises a stopper integrated machine body 100, a pneumatic three-jaw chuck 101, a movable seat 102 and a stopper turning tool 103. The pneumatic three-jaw chuck 101 for fixing the piston ring is arranged on one side of the stopper integrated machine body 100, and a movable seat 102 is arranged on a position corresponding to the pneumatic three-jaw chuck 101 on one side of the stopper integrated machine body 100, and a stopper turning tool 103 is arranged on the outer surface of the upper end of the movable seat 102;

[0037] The piston comprehensive processing machine comprises a piston comprehensive processing machine body 200, a driving seat 201, a profile mold 202, a stop seat 203, a pull rod 204, a limit hole 205 and a movable seat 206, the upper end outer surface of the piston comprehensive processing machine body 200 is provided with a movable seat 206, and the end outer surfaces of the movable seat 206 are respectively provided with a ring groove cutter 207, a head cutter 208, a fine turning tool 209 and a matching block 210, and the fine turning tool 209 is connected to the matching block 210, the outer surface of one side of the piston comprehensive processing machine body 200 is provided with a driving seat 201, and the output end of the driving seat 201 is sequentially provided with a profile mold 202, a stop seat 203 and a pull rod 204, and a limit is provided on the outer surface of one side of the pull rod 204;

[0038] The pin hole processing machine comprises a pin hole processing machine body 300, a second drive seat 301, a fixed seat 302 and a tool seat 303, a second drive seat 301 is provided on one side outer surface of the pin hole processing machine body 300, and a mounting groove 304 is provided on one side outer surface of the second drive seat 301, the tool seat 303 is movably connected inside the mounting groove 304, and a fine boring slotting tool 306 is provided on one side outer surface of the tool seat 303, a movable seat 342 and a fixed seat 302 are provided on the upper end outer surface of the pin hole processing machine body 300 from left to right, and a rough boring tool 305 is provided on one side outer surface of the fixed seat 302, a support mechanism 323 is provided on the upper end outer surface of the movable seat 342 near the middle, and a support frame 307 is fixedly connected to the upper end outer surface of the movable seat 342 near one side;

[0039] Connect the piston body to the pneumatic three-jaw chuck 101 of the stopper integrated machine, then drive the stopper turning tool 103 to process it, then process the pin hole, and finally use the piston comprehensive processing machine to process the ring groove, profile and head. First, place the piston body between the ring groove cutter 207, head cutter 208 and fine turning tool 209 of the piston comprehensive processing machine. After the fixation is completed, the starting rod pushes the stopper seat 203 and the pull rod 204 into the interior of the piston body. At this time, the limit hole 205 opened on the outer surface of the pull rod 204 corresponds to the unfinished pin hole, and then use A pin is passed through the pin hole and the limit hole 205 to fix the pull rod 204 and the piston body relatively, and then the pull rod 204 is started to pull the piston body backward to fix it, and the outer surface of the stop seat 203 is fitted with the stop, and the driving seat 201 drives the piston body to rotate. In this process, the matching block 210 is always fitted with the profile mold 202, and the change of the profile mold 202 drives the fine turning tool 209 to change, and the fine turning tool 209 is used to process the profile of the piston body, the head tool 208 is used to process the head of the piston body, and the ring groove tool 207 is used to process its ring groove;

[0040] Therefore, the equipment integrates the processing of the ring groove, the head and the profile line, which greatly reduces the waste of resources. In addition, the process does not need to use the traditional hydraulic ejector method to fix it. The use of the pneumatic pull rod 204 method greatly reduces the hydraulic power consumption, reduces the interference of the center hole ejector, and improves the product quality. Finally, the pin hole processing is used to process the pin hole of the piston body.

[0041] Embodiment 2:

[0042] like Figure 4 and Figure 8 As shown, the difference between this embodiment and embodiment 1 is that a tightening mechanism 308 is provided on the outer surface of the upper end of the support frame 307, and the tightening mechanism 308 includes a tightening cylinder 309, a push rod 310, a mounting tube 311, a mounting plate 312, a threaded column 313, a connecting tube 314, a tightening frame 315 and a ball 316. The outer surface of the upper end of the support frame 307 is provided with a tightening cylinder 309, and the output end of the tightening cylinder 309 passes through the support frame 307 and is fixedly connected to the push rod 310. A mounting tube 311 is provided below the push rod 310, and the outer surface of the lower end of the mounting tube 311 is fixedly connected to the mounting plate 312. In the process of fixing the piston body, the tightening cylinder 309 is first started to drive the push rod 310 pushes the mounting plate 312 downward, the pushing rod 310 penetrates into the interior of the mounting tube 311 and is connected thereto by bolts for easy disassembly, the upper outer surface of the mounting plate 312 is provided with two groups of threaded holes 317 with opposite threaded directions near the two sides, the interiors of the two groups of threaded holes 317 are threadedly connected with threaded columns 313, and the lower outer surfaces of the threaded columns 313 are fixedly connected with limit blocks 318, the outer surfaces of the limit blocks 318 are movably connected with connecting tubes 314, and a tightening frame 315 is provided below the two groups of connecting tubes 314, and the tightening frame 315 is hinged to the two groups of connecting tubes 314, and the lower outer surface of the tightening frame 315 is connected with a plurality of groups of balls 316 by annular equidistant embedded rolling connections;

[0043] An annular groove 319 is provided on the outer surface of the upper end of the tightening frame 315, and the inner part of the annular groove 319 is rotatably connected to a limit ring 320, and a rotating ring 321 is fixedly connected to the outer surface of the upper end of the limit ring 320, and a plurality of groups of teeth 1 343 are fixedly connected in an annular manner and equidistantly at the outer surface of the threaded column 313 near the top, and a plurality of groups of teeth 2 322 are fixedly connected in an annular manner and equidistantly at the inner surface of the rotating ring 321 corresponding to the teeth 1 343, and the teeth 1 343 mesh with the teeth 2 322;

[0044] In the process of fixing the piston body, the tightening cylinder 309 is first started to drive the push rod 310 to push the mounting plate 312 downward, and then the operator can adjust the inclination angle of the tightening frame 315 by twisting the rotating ring 321 to adapt to the piston body with an irregular top shape. During the rotation of the rotating ring 321, since the tooth 1 343 is meshed with the tooth 2 322, the two groups of threaded columns 313 rotate in the same direction at the same time, and the internal threads of the two groups of threaded holes 317 rotate in opposite directions. Therefore, the two groups of threaded rods move axially in opposite directions along the central axis of the threaded rods, so that the tightening frame 315 is inclined to one side, and then the push rod 310 pushes the tightening frame 315 downward again, increasing the number of balls 316 in contact with the piston body, thereby improving the fixing effect.

[0045] Embodiment three:

[0046] like Figure 4-7 As shown, the difference between this embodiment and embodiment 1 and embodiment 2 is that the support mechanism 323 includes a fixed plate 324, a support block 325, an electromagnet 1 326, an electromagnet 2 327, a movable column 328, a connecting rod 1 329, a connecting rod 2 330, a spring 1 334, a slide groove 331, a slider 332 and a positioning member 335, the fixed plate 324 is fixedly connected to the upper outer surface of the movable seat 342, and the upper outer surface of the fixed plate 324 is symmetrically annularly provided with four groups of slide grooves 331 at equal distances, and the slide groove 331 is slidably connected to the slider 332 inside, the upper outer surface of the slider 332 is fixedly connected to the support block 325, and the outer surface of the support block 325 is arc-shaped, and the slide groove 331 is provided with a connecting rod 1 32 9, and one end of the connecting rod 1 329 is fixedly connected to the slider 332, and the other end is hinged with the connecting rod 2 330, a movable groove 333 is provided on the upper outer surface of the fixed plate 324 near the middle, and a spring 1 334 is arranged inside the movable groove 333, one end of the spring 1 334 is fixedly connected to the movable groove 333, and the other end is fixedly connected to the movable column 328, the end of the connecting rod 2 330 away from the connecting rod 1 329 is hinged to the movable column 328, and the upper outer surface of the movable column 328 is fixedly connected with the electromagnet 1 326, and the top of the inner surface of the top tightening frame 315 is fixedly connected with the electromagnet 2 327, in the process of the top tightening frame 315 moving downward, the electromagnet 1 326 and the electromagnet 2 327 are both running, and the magnetic properties of the two are the same;

[0047] Under the magnetic repulsion force of electromagnet 2 327, electromagnet 1 326 pushes movable column 328 downward to squeeze the spring, and makes connecting rod 2 330 around it push slider 332 and support block 325 to one side until the outer surface of support block 325 is completely in contact with the inner surface of the piston body. Therefore, piston bodies of different specifications can be supported to improve the supporting effect, and the magnetic repulsion force between electromagnet 1 326 and electromagnet 2 327 and the elastic force of spring 1 334 can be used to buffer the vibration of the piston body during the processing.

[0048] Embodiment 4:

[0049] like Figure 5-7 As shown, the difference between this embodiment and the first, second and third embodiments is that the upper outer surfaces of the four groups of support blocks 325 are all provided with positioning members 335, and the positioning members 335 include guide grooves 336, guide rods 337, springs 338, movable blocks 339, positioning posts 340 and torsion springs 341. The upper outer surface of the support block 325 is provided with guide grooves 336, and the guide grooves 336 are fixedly connected with guide rods 337, and the outer surfaces of the guide rods 337 are sleeved with springs 338 near both ends, and one end of the springs 338 is fixedly connected to the guide grooves 336, and the other end is fixedly connected to the movable block 339, and the movable block 339 is slidably connected to the guide rods 337, and the upper outer surface of the movable block 339 is rotatably connected with the positioning posts 340, and the outer surface of the positioning posts 340 is provided with torsion springs 341 near the bottom, and one end of the torsion springs 341 is fixedly connected to the positioning posts 340, and the other end is fixedly connected to the movable block 339;

[0050] During this process, the movable column 328 is located on both sides of the pin hole protrusion, which makes it easy for the operator to position the piston body when placing it. At the same time, the elastic force of spring 2 338 and torsion spring 341 cooperates with each other to further absorb the vibration generated by the piston body during the processing, thereby extending the service life of the internal components of the device.

[0051] Embodiment 4:

[0052] A production process for a piston comprises the following steps:

[0053] S1, stopper processing: connect the piston body to the pneumatic three-jaw chuck 101 of the stopper integrated machine, and then drive the stopper turning tool 103 to process it;

[0054] S2, pin hole processing: after the piston body is processed on the head and the ring groove, the pin hole processing is performed on it. In this process, it is first placed on the mounting plate 312 of the pin hole processing machine, and the outer surface of the stop of the piston body is in contact with the outer surface of the support block 325, and then it is fixed by the clamping mechanism 308, and then the driving seat drives the piston to move in the direction of the rough boring tool 305, and the rough boring tool 305 penetrates the two groups of pin holes and rotates to perform rough processing on the two groups of pin holes. After the processing is completed, it moves to the fine boring slot cutter 306, and the fine boring slot cutter 306 enters the pin hole for fine processing. In this process, the position of the fine boring slot cutter 306 can be changed by adjusting the tool holder 303, and then the retaining ring groove inside the pin hole is processed;

[0055] In the process of fixing the piston body, the tightening cylinder 309 is first started to drive the push rod 310 to push the mounting plate 312 downward. In the process of fixing, the operator can adjust the inclination angle of the tightening frame 315 by twisting the rotating ring 321 to adapt to the piston body with an irregular top. In the process of rotating the rotating ring 321, since the tooth 1 343 is meshed with the tooth 2 322, the two groups of threaded columns 313 rotate in the same direction at the same time, and the internal threads of the two groups of threaded holes 317 rotate in opposite directions. Therefore, the two groups of threaded rods move in opposite directions along the axial direction of the central axis of the threaded rods, so that the tightening frame 315 is inclined to one side, and then the push rod 310 pushes the tightening frame 315 downward again, increasing the number of balls 316 in contact with the piston body, thereby improving the fixing effect.

[0056] In the process of the tightening frame 315 moving downward, the electromagnet 1 326 and the electromagnet 2 327 are both running, and the magnetism of the two is the same. Therefore, the electromagnet 1 326 pushes the movable column 328 to squeeze the spring downward under the magnetic repulsion force of the electromagnet 2 327, and makes the surrounding connecting rods 2 330 push the slider 332 and the support block 325 to one side until the outer surface of the support block 325 is completely in contact with the inner surface of the piston body. Therefore, it is possible to support piston bodies of different specifications and improve the supporting effect. In addition, the magnetic repulsion force between the electromagnet 1 326 and the electromagnet 2 327 and the elastic force of the spring 1 334 can be used to buffer the vibration of the piston body during the processing. In this process, the movable column 328 is located on both sides of the pin hole protrusion, which can facilitate the operator to position the piston body when placing it. At the same time, the elastic force of the spring 2 338 and the torsion spring 341 cooperate with each other to further absorb the vibration generated by the piston body during the processing, thereby extending the service life of the internal components of the device.

[0057] S3, processing of ring grooves, profiles and heads: the piston body with the pin hole processed is placed in a piston comprehensive processing machine for processing of the head, profiles and ring grooves. First, the piston body is placed between the ring groove cutter 207, the head cutter 208 and the finishing cutter 209 of the piston comprehensive processing machine. After the fixation is completed, the starting rod pushes the stop seat 203 and the pull rod 204 into the interior of the piston body. At this time, the limiting hole 205 opened on the outer surface of the pull rod 204 corresponds to the unfinished pin hole. Then, a pin is used to penetrate the pin hole and the limiting hole 205 to fix the pull rod 204 and the piston body relatively. Then, the pull rod 204 is started to pull the piston body backward to fix it. The appearance of the stop seat 203 The surface is fitted with the stop, and the driving seat 201 drives the piston body to rotate. In this process, the matching block 210 is always fitted with the profile mold 202, and the fine turning tool 209 is driven to change with the change of the profile mold 202. The fine turning tool 209 is used to process the profile of the piston body, the head tool 208 is used to process the head of the piston body, and the ring groove tool 207 is used to process its ring groove. Therefore, the equipment integrates the processing of the ring groove, the head and the profile, which greatly reduces the waste of resources. In addition, the process does not need to use the traditional hydraulic ejector method to fix it. The pneumatic pull rod 204 method greatly reduces the hydraulic power consumption, reduces the interference of the center hole ejector, and improves the product quality.

[0058] S4, piston oil hole processing: After the piston body is processed with stopper, pin hole, ring groove, profile and head, the piston body is placed under the drilling machine and then drilled with the drilling machine to process the piston oil hole.

[0059] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0061] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A production process for a piston, characterized in that: The steps include: S1, stopper processing: connecting the piston body to the pneumatic three-jaw chuck (101) of the stopper integrated machine, and then driving the stopper turning tool (103) to process it; S2, pin hole processing: after the piston body is processed with the stopper, the pin hole processing is performed on it. In this process, it is first placed on the mounting plate (312) of the pin hole processing machine, and the outer surface of the stopper of the piston body is fitted with the outer surface of the support block (325). Then, it is fixed by using the clamping mechanism (308). Then, the driving seat drives the piston to move in the direction of the rough boring tool (305). The rough boring tool (305) penetrates the two groups of pin holes and rotates to perform rough processing on the two groups of pin holes. After the processing is completed, it moves to the fine boring slotting tool (306). The fine boring slotting tool (306) enters the pin hole to perform fine processing on it. In this process, the position of the fine boring slotting tool (306) can be changed by adjusting the tool holder (303), and then the retaining ring groove inside the pin hole is processed; In the process of fixing the piston body, the pressing cylinder (309) is first started to drive the push rod (310) to push the mounting plate (312) downwards, and during the fixing process, the operator can adjust the tilt angle of the pressing frame (315) by turning the rotating ring (321) to adapt to the piston body with an irregular top shape; In the process of the tightening frame (315) moving downward, both the electromagnet 1 (326) and the electromagnet 2 (327) are in operation, and the magnetism of the two is the same, so the electromagnet 1 (326) pushes the movable column (328) downward to squeeze the spring under the magnetic repulsive force of the electromagnet 2 (327), and makes the surrounding connecting rod 2 (330) push the slider (332) and the support block (325) to one side until the outer surface of the support block (325) is completely in contact with the inner surface of the piston body; S3, ring groove, profile and head processing: the piston body with the pin hole processed is placed in a piston comprehensive processing machine for processing the head, profile and ring groove. First, the piston body is placed between the ring groove cutter (207), the head cutter (208) and the fine turning cutter (209) of the piston comprehensive processing machine. After the fixing is completed, the start rod pushes the stop seat (203) and the pull rod (204) into the interior of the piston body. At this time, the limit hole (205) opened on the outer surface of the pull rod (204) corresponds to the unfinished pin hole. Then, a pin is used to penetrate the pin hole and the limit hole (205) to make the pull rod ( 204) is relatively fixed with the piston body, and then the pull rod (204) is started to pull the piston body backward to fix it, the outer surface of the stop seat (203) is fitted with the stop, and the driving seat (201) drives the piston body to rotate. During this process, the matching block (210) is always fitted with the profile mold (202), and the fine turning tool (209) is driven to change with the change of the profile mold (202). The fine turning tool (209) is used to process the profile of the piston body, the head tool (208) is used to process the head of the piston body, and the ring groove tool (207) is used to process its ring groove; S4, piston oil hole processing: after the piston body is processed with the stopper, pin hole, ring groove, profile and head, the piston body is placed under the drilling machine, and then the drilling machine is used to drill a hole in it, so as to process the piston oil hole; The piston comprehensive processing machine comprises a piston comprehensive processing machine body (200), a driving seat 1 (201), a profile mold (202), a stop seat (203), a pull rod (204), a limit hole (205) and a movable seat 2 (206), wherein the upper end outer surface of the piston comprehensive processing machine body (200) is provided with a movable seat 2 (206), and the upper end outer surface of the movable seat 2 (206) is respectively provided with a ring groove cutter (207), a head cutter (208), and a groove cutter (209). 8), a fine turning tool (209) and a matching block (210), and the fine turning tool (209) is connected to the matching block (210), a driving seat (201) is provided on one side outer surface of the piston comprehensive processing machine body (200), and a profile mold (202), a stop seat (203) and a pull rod (204) are sequentially provided at the output end of the driving seat (201), and a limiting hole (205) is provided on one side outer surface of the pull rod (204); The pin hole processing machine comprises a pin hole processing machine body (300), a second drive seat (301), a fixed seat (302) and a tool seat (303), wherein the outer surface of one side of the pin hole processing machine body (300) is provided with the second drive seat (301), and the outer surface of one side of the drive seat (301) is provided with a mounting groove (304), the interior of the mounting groove (304) is movably connected with the tool seat (303), and the outer surface of one side of the tool seat (303) is provided with a precision boring slot cutter (306), and the pin hole processing machine body (300) is provided with a second drive seat (301) and a fixing seat (302) and a tool seat (303) are provided with ... A movable seat (342) and a fixed seat (302) are respectively arranged on the upper outer surface of the machine body (300) from left to right, and a rough boring tool (305) is arranged on one side outer surface of the fixed seat (302), a support mechanism (323) is arranged near the middle of the upper outer surface of the movable seat (342), and a support frame (307) is fixedly connected to the upper outer surface of the movable seat (342) near one side, and a tightening mechanism (308) is arranged on the upper outer surface of the support frame (307); The tightening mechanism (308) comprises a tightening cylinder (309), a pushing rod (310), a mounting tube (311), a mounting plate (312), a threaded column (313), a connecting tube (314), a tightening frame (315) and a ball (316). The tightening cylinder (309) is arranged on the outer surface of the upper end of the support frame (307), and the output end of the tightening cylinder (309) passes through the support frame (307) and is fixedly connected to the pushing rod (310). The mounting tube (311) is arranged below the pushing rod (310), and the outer surface of the lower end of the mounting tube (311) is fixedly connected to the mounting plate (312). The pushing rod (310) passes through the interior of the mounting tube (311) and passes through the output end of the connecting tube (314). The mounting plate (312) is connected with the mounting plate (312) by bolts. Two groups of threaded holes (317) with opposite threaded directions are respectively provided on the upper outer surface of the mounting plate (312) near the two sides. The insides of the two groups of threaded holes (317) are threadedly connected with threaded columns (313). The lower outer surface of the threaded column (313) is fixedly connected with a limit block (318). The outer surface of the limit block (318) is movably connected with a connecting tube (314). A tightening frame (315) is provided below the two groups of connecting tubes (314). The tightening frame (315) is hinged to the two groups of connecting tubes (314). The lower outer surface of the tightening frame (315) is annular and equidistantly embedded with a plurality of groups of balls (316) in rolling connection. An annular groove (319) is provided on the outer surface of the upper end of the mounting plate (312), and a limit ring (320) is rotatably connected inside the annular groove (319), a rotating ring (321) is fixedly connected to the outer surface of the upper end of the limit ring (320), and a plurality of groups of teeth 1 (343) are fixedly connected in an annular shape and equidistantly at a position near the top of the outer surface of the threaded column (313), and a plurality of groups of teeth 2 (322) are fixedly connected in an annular shape and equidistantly at a position corresponding to the teeth 1 (343) on the inner surface of the rotating ring (321), and the teeth 1 (343) are meshed with the teeth 2 (322); The support mechanism (323) comprises a fixed plate (324), a support block (325), an electromagnet 1 (326), an electromagnet 2 (327), a movable column (328), a connecting rod 1 (329), a connecting rod 2 (330), a spring 1 (334), a slide groove (331), a slider (332) and a positioning member (335). The fixed plate (324) is fixedly connected to the upper outer surface of the movable seat (342), and the upper outer surface of the fixed plate (324) is symmetrically provided with four groups of slide grooves (331) in an annular shape and at equal distances, and the slider (332) is slidably connected inside the slide groove (331), and the upper outer surface of the slider (332) is fixedly connected to the support block (325), and the outer surface of the support block (325) is arc-shaped, and the interior of the slide groove (331) is provided with a connecting rod 1 (32 9), and one end of the connecting rod 1 (329) is fixedly connected to the slider (332), and the other end is hinged with the connecting rod 2 (330), a movable groove (333) is provided on the upper end outer surface of the fixed plate (324) near the middle, and a spring 1 (334) is arranged inside the movable groove (333), one end of the spring 1 (334) is fixedly connected to the movable groove (333), and the other end is fixedly connected to the movable column (328), one end of the connecting rod 2 (330) away from the connecting rod 1 (329) is hinged to the movable column (328), and the upper end outer surface of the movable column (328) is fixedly connected with the electromagnet 1 (326), the top end of the inner surface of the tightening frame (315) is fixedly connected with the electromagnet 2 (327), and the upper end outer surfaces of the four groups of support blocks (325) are all provided with positioning members (335).

2. The production and processing technology of a piston according to claim 1 is characterized in that: The stopper integrated machine comprises a stopper integrated machine body (100), a pneumatic three-jaw chuck (101), a movable seat (102) and a stopper turning tool (103), wherein a pneumatic three-jaw chuck (101) for fixing a piston ring is arranged on one side of the stopper integrated machine body (100), a movable seat (102) is arranged on one side of the stopper integrated machine body (100) at a position corresponding to the pneumatic three-jaw chuck (101), and a stopper turning tool (103) is arranged on the upper outer surface of the movable seat (102).

3. A production and processing technology for a piston according to claim 1, wherein the positioning member (335) comprises a guide groove (336), a guide rod (337), a second spring (338), a movable block (339), a positioning column (340) and a torsion spring (341), the upper end outer surface of the support block (325) is provided with a guide groove (336), and the inside of the guide groove (336) is fixedly connected with a guide rod (337), and the outer surface of the guide rod (337) near both ends is sleeved with the second spring (338). 8), and one end of the second spring (338) is fixedly connected to the guide groove (336), and the other end is fixedly connected to a movable block (339), the movable block (339) is slidably connected to the guide rod (337), and the upper outer surface of the movable block (339) is rotatably connected to a positioning column (340), and a torsion spring (341) is provided on the outer surface of the positioning column (340) near the bottom end, and one end of the torsion spring (341) is fixedly connected to the positioning column (340), and the other end is fixedly connected to the movable block (339).

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