CN115283716A

CN115283716A - Automatic boring device for piston

Info

Publication number: CN115283716A
Application number: CN202210876899.8A
Authority: CN
Inventors: 陶荣明; 陶伟; 祝雪强; 付刘明
Original assignee: Zhejiang Chuangneng Machinery Co ltd
Current assignee: Zhejiang Chuangneng Machinery Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-11-04

Abstract

The invention discloses an automatic piston boring device which comprises a workbench, wherein the workbench is provided with an automatic feeding mechanism, a material seat, a grabbing and transferring mechanism, a boring processing table, a clamping mechanism, a boring driving mechanism and a material returning track, a processing station is arranged on the boring processing table, the feeding mechanism is used for feeding piston workpieces into the material seat, the grabbing and transferring mechanism is used for transferring the piston workpieces to be processed from the material seat to the processing station and transferring the piston workpieces which are positioned at the processing station and have finished boring processing to the material returning track, the clamping mechanism is used for clamping the piston workpieces positioned at the processing station before boring processing, the boring driving mechanism is connected with a boring cutter, automatic boring processing of the piston workpieces is realized by the device, and after a certain number of workpieces are discharged, the follow-up actions are automatically carried out, the structure is simple, compact and effective, the processing efficiency is greatly improved, the labor force is saved, and the processing precision is ensured.

Description

Automatic boring device for piston

Technical Field

The invention relates to the technical field of automation equipment, in particular to an automatic boring device for a piston.

Background

The piston is a reciprocating element in the cylinder body of the automobile engine. The basic structure of the piston can be divided into a crown, a head and a skirt. The piston crown is the main part that makes up the combustion chamber and its shape is related to the combustion chamber form chosen. The gasoline engine mostly adopts a flat-top piston, and has the advantage of small heat absorption area. The top of the piston of a diesel engine often has various pits, the specific shape, position and size of which must be adapted to the requirements of the mixture formation and combustion of the diesel engine.

A piston workpiece needs to be bored in a through hole during machining, the bore hole can enlarge the aperture, improve the precision, reduce the surface roughness and better correct the deflection of the original hole axis.

Disclosure of Invention

In order to solve the technical problems, the invention relates to an automatic piston boring device which is simple and reliable in structure, effectively solves the technical problems and is suitable for popularization and application, and in order to achieve the purposes, the automatic piston boring device is realized through the following technical scheme:

the automatic piston boring device comprises a workbench, wherein the workbench is provided with an automatic feeding mechanism, a material seat, a grabbing and transferring mechanism, a boring processing table, a clamping mechanism, a boring driving mechanism and a material returning track, a processing station is arranged on the boring processing table, the feeding mechanism is used for feeding piston workpieces into the material seat, the grabbing and transferring mechanism is used for transferring the piston workpieces to be processed from the material seat to the processing station and transferring the piston workpieces which are positioned at the processing station and have finished boring processing to the material returning track, the clamping mechanism is used for clamping the piston workpieces positioned at the processing station before boring processing, the boring driving mechanism is connected with a boring cutter, and the boring cutter coaxially corresponds to holes to be processed of the piston workpieces positioned at the processing station.

On the basis of the above scheme and as a preferable scheme of the scheme: the automatic feeding mechanism comprises a conveying belt, a first limiting rod and a second limiting rod are arranged on two sides of the upper portion of the conveying belt respectively, a limiting groove is formed in the material seat, and the conveying tail end of the conveying belt is in butt joint with the limiting groove of the material seat during feeding.

On the basis of the above scheme and as a preferable scheme of the scheme: the automatic feeding and grabbing device is characterized by further comprising a feeding and grabbing auxiliary positioning mechanism, wherein the feeding and grabbing auxiliary positioning mechanism is used for positioning a piston workpiece transferred to the material seat and comprises a first linear driving cylinder, a flat plate, a first guide rail, a second linear driving cylinder, a connecting block and a first positioning rod, the first guide rail is longitudinally arranged on the workbench and is perpendicular to the conveying belt, a piston rod of the first linear driving cylinder is connected with the flat plate, the flat plate is connected with the first guide rail in a sliding mode, the material seat and the second linear driving mechanism are fixedly arranged on the flat plate, and an L-shaped fixing block is arranged on the material seat, an arc notch coinciding with the arc edge of the limiting groove is formed in one end of the fixing block, the fixing block is further connected with a material ejecting rod arranged in the transverse direction, the connecting block is shaped like a Chinese character '21274', the connecting block surrounds the outer side of the material seat, a piston rod of the second linear driving cylinder is connected with the first locating rod through the connecting block, a channel is reserved between the first locating rod and the fixing block, the end portion of the second locating rod extends to the upper portion of the material seat, the first linear driving cylinder is used for driving the material seat to transfer between a feeding station and a loading station, and the second linear driving cylinder is used for driving the first locating rod to penetrate through the channel and be inserted into a through hole of a piston workpiece located in the limiting groove.

On the basis of the above scheme and as a preferable scheme of the scheme: the boring device is characterized by further comprising a third linear driving cylinder and a second guide rail, wherein the third linear driving cylinder is fixedly connected with the boring processing table, the bottom of the boring processing table is in sliding connection with the second guide rail, and the third linear driving cylinder is used for driving the boring processing table to be close to or far away from the boring cutter.

On the basis of the above scheme and as a preferable scheme of the scheme: the clamping mechanism comprises a fixing seat and a fourth linear driving cylinder, a supporting block is arranged on one side of the fixing seat and provided with a trapezoidal clamping groove, the fourth linear driving cylinder is transversely arranged and installed, a piston rod of the fourth linear driving cylinder is connected with a pressing block, the pressing block is opposite to the supporting block, and the fourth linear driving cylinder is used for driving the pressing block to be close to or far away from the supporting block.

On the basis of the above scheme and as a preferable scheme of the scheme: the boring machining table is further provided with a fifth linear driving cylinder, the fifth linear driving cylinder is arranged in the longitudinal direction, a piston rod of the fifth linear driving cylinder faces the machining station and is connected with a second positioning rod, and the fifth linear driving cylinder is used for inserting the second positioning rod into an inner hole of a piston workpiece located on the machining station for positioning before boring machining.

On the basis of the above scheme and as a preferable scheme of the scheme: the material grabbing and transferring mechanism comprises a portal frame, a motor, a lead screw and a moving block, the portal frame is installed on a boring machining table, the motor is fixed on the portal frame, the output end of the motor is connected with the lead screw, the lead screw is installed in a transverse arrangement mode, the moving block is connected with the lead screw through a nut, and the motor is used for driving the lead screw to rotate so that the moving block can move in a transverse reciprocating mode.

On the basis of the above scheme and as a preferable scheme of the scheme: grab material transfer mechanism still includes the lift cylinder, the lift cylinder is connected with the movable block, the piston rod of lift cylinder is down and be connected with the mounting panel that the cross-section is L shape, the front side of mounting panel is equipped with the diaphragm, the one end of diaphragm is equipped with the bracket, install the sleeve on the bracket, it is equipped with the round pin axle to insert in the telescopic hole, the top of round pin axle is equipped with the screw thread post just the screw thread post is stretched out from the sleeve top, the screw thread post connection has the nut, the lower part of round pin axle is equipped with the spacing ring, the external diameter of spacing ring is greater than telescopic external diameter, the bottom symmetry of round pin axle is equipped with two spring leafs, the bottom outer fringe of spring leaf is equipped with the arch.

On the basis of the above scheme and as a preferable scheme of the scheme: the other end of diaphragm is equipped with the clamping jaw cylinder, the clamping jaw cylinder is hole centre gripping formula cylinder.

On the basis of the above scheme and as a preferable scheme of the scheme: the material returning rail is obliquely arranged, and the tail end of the material returning rail is connected with the material receiving box.

Compared with the prior art, the invention has the outstanding and beneficial technical effects that: the automatic boring processing of the piston workpiece is realized by the equipment, the follow-up action of workers is automatically performed after a certain number of workpiece emptying is completed, the position precision of the piston workpiece is ensured through multiple positioning, the structure is simple, compact and effective, the processing efficiency is greatly improved, and the processing precision is ensured while manpower is saved.

Drawings

FIG. 1 is a schematic view of a first perspective of the overall structure;

FIG. 2 is a second perspective view of the overall structure;

FIG. 3 is a schematic illustration of a pin;

FIG. 4 is an enlarged schematic view at A in FIG. 2;

figure 5 is a schematic view of a piston workpiece.

Detailed Description

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, however, the specific embodiments and embodiments described below are only for illustrative purposes and are not intended to limit the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the directions or positional relationships shown in fig. 1, are only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of indicated technical features is significant.

In order to solve the technical problems, as shown in figures 1 to 5, the invention relates to an automatic boring device for a piston, which comprises a workbench 1, wherein the workbench 1 is provided with an automatic feeding mechanism 2, a material seat 3, a material grabbing and transferring mechanism 4, a boring processing table 5, a material clamping mechanism 6, a boring driving mechanism 7 and a material returning track 8.

Specifically, the automatic feeding mechanism 2 includes a conveying belt 201, a first limiting rod 202 and a second limiting rod 203 are respectively arranged on two sides above the conveying belt 201, the first limiting rod 202 and the second limiting rod 203 are both connected with a lateral mounting block through bolts and are fixed on the workbench 1 through the mounting block, a limiting groove 301 is arranged on the material seat 3, during feeding, a transmission end of the conveying belt 201 is butted with the limiting groove 301 of the material seat 3, the conveying belt 201 can perform reciprocating circulating operation for transportation and transfer, when a worker places piston workpieces 9 to be processed into the conveying belt 201, the workpieces can move towards the material seat 3 along with the conveying belt 201, a distance between the first limiting rod 202 and the second limiting rod 203 is matched with an outer diameter of the piston workpieces 9, so that the first limiting rod 202 and the second limiting rod 203 can limit the piston workpieces 9, a plurality of workpieces are arranged in a row and move towards the material seat 3, and the piston workpieces 9 closest to the material seat 3 can be sent into the limiting groove 301 of the material seat 3.

Further, the device comprises a feeding grabbing auxiliary positioning mechanism 10, the feeding grabbing auxiliary positioning mechanism 10 is used for positioning the piston workpiece 9 transferred to the material holder 3, the feeding grabbing auxiliary positioning mechanism 10 comprises a first linear driving cylinder 1001, a flat plate 1002, a first guide rail 1003, a second linear driving cylinder 1004, a connecting block 1005 and a first positioning rod 1006, the first guide rail 1003 is longitudinally arranged on the workbench 1 and is perpendicular to the conveying belt 201, a piston rod of the first linear driving cylinder 1001 is connected with the flat plate 1002, the flat plate 1002 is in sliding connection with the first guide rail 1003, the first linear driving cylinder 1001 can drive the flat plate 1002 to reciprocate along the first guide rail, the material holder 3 and the second linear driving mechanism are fixedly arranged on the flat plate 1002, the material holder 3 is provided with an L-shaped fixing block 302, one end of the fixed block 302 is provided with an arc notch coinciding with the arc edge of the limit groove 301, the fixed block 302 is further connected with a material ejecting rod 303 arranged transversely, the connecting block 1005 is in a shape of '21274', the connecting block 1005 surrounds the outer side of the material seat 3, a piston rod of the second linear driving cylinder 1004 is connected with the first locating rod 1006 through the connecting block 1005, the axis of the first locating rod 1006 is parallel to the axis of the boring cutter 11 to be processed, a channel is reserved between the first locating rod 202 and the fixed block 302, the end part of the second locating rod 203 extends to the upper part of the material seat 3, a worker places the through hole of the piston workpiece 9 approximately coaxially with the first locating rod 1006 and on the conveyor belt 201, and due to the fact that the axis direction of the through hole has a certain deviation when the worker places the piston workpiece 9 into the material seat 3 at the material loading station, the piston workpiece 9 is attached to the arc notch of the fixed block 302 and is simultaneously attached to the material ejecting rod 303, and the material ejecting rod 303 The extension parts of the second limiting rods 203 are in contact, the second linear driving cylinder 1004 drives the first locating rod 1006 to penetrate through a through hole of the piston workpiece 9 in the limiting groove 301 from the channel to complete initial positioning, then the first linear driving cylinder 1001 drives the flat plate 1002 to move so that the piston workpiece 9 on the material seat 3 moves to a material loading station, a processing station 16 is arranged on the boring processing table 5, the material loading station and the processing station 16 are horizontally flush and are located on the same straight line, the material seat 3 is always inserted into the through hole of the piston workpiece 9 to prevent the piston workpiece 9 from shifting in the transferring process, before the piston workpiece 9 is transferred to the material loading station and is grabbed by the grabbing and transferring mechanism 4, the second linear driving cylinder 1004 drives the first locating rod 1006 to move out of the through hole of the piston workpiece 9 to prevent interference, and the whole mechanism resets and returns after the piston workpiece 9 is grabbed. Snatch auxiliary positioning mechanism 10 through the material loading and can carry out preliminary location to the piston work piece 9 of sending into from conveyer belt 201 automatically, piston work piece 9 and the coaxial setting of boring cutter 11 when guaranteeing the material loading, the mode location through mechanical type location is accurate, when efficiency is higher, overall structure is simple durable, it is comparatively convenient to maintain, need not use extra sensor supplementary, the workman is subsequent for automatic feed after putting certain quantity of work pieces at conveyer belt 201, can vacate the time and go to carry out other operations.

The boring driving mechanism 7 is connected with the boring cutter 11, the boring driving mechanism 7 is of a conventional boring machine structure, the boring cutter 11 is driven by a motor, the specific driving mode of the boring cutter 11 is the prior art, further description is omitted in the specification, and the boring cutter 11 coaxially corresponds to a hole to be machined of the piston workpiece 9 located on the machining station 16.

The device also comprises a third linear driving cylinder 12 and a second guide rail 13, wherein the third linear driving cylinder 12 is fixedly connected with the boring processing table 5, the boring processing table 5 is connected with the second guide rail 13 in a sliding manner, the second guide rail 13 is arranged longitudinally, the number of the second guide rails 13 is two in the embodiment, the bearing capacity is improved, after the piston workpiece 9 is transferred to a processing station 16 on the boring processing table 5, the third linear driving cylinder 12 is used for driving the boring processing table 5 to be close to the boring cutter 11, and the boring cutter 11 keeps a rotating state, so that the piston workpiece 9 on the processing station 16 can be bored with a through hole, and the processing precision requirement is met.

Considering that the piston workpiece 9 needs to be kept fixed during boring, the clamping mechanism 6 can clamp the piston workpiece 9 located on the processing station 16 before boring, specifically, the clamping mechanism 6 includes a fixing seat 601 and a fourth linear driving cylinder 602, a supporting block 603 is arranged on one side of the fixing seat 601, the supporting block 603 is provided with a trapezoidal clamping groove, the fourth linear driving cylinder 602 is transversely arranged and mounted, a piston rod of the fourth linear driving cylinder 602 is connected with a pressing block 604, the pressing block 604 is arranged opposite to the supporting block 603, after the piston workpiece 9 is placed on the processing station 16, the fourth linear driving cylinder 602 drives the pressing block 604 to move close to the supporting block 603 until the piston workpiece 9 is clamped, and through the matching between the pressing block 604 and the supporting block 603, the piston workpiece 9 is limited by the trapezoidal clamping groove, so that the piston workpiece 9 is prevented from moving during boring to affect the boring accuracy.

Considering that the piston workpiece 9 may deviate in the clamping process, the boring machining table 5 is further provided with a fifth linear driving cylinder 14, the fifth linear driving cylinder 14 is installed in a longitudinal arrangement, a piston rod of the fifth linear driving cylinder 14 faces the machining station 16 and is connected with a second positioning rod 15, after the piston workpiece 9 is clamped, the fifth linear driving cylinder 14 is used for inserting the second positioning rod 15 into an inner hole of the piston workpiece 9 located in the machining station 16 for positioning before boring machining, and secondary positioning of the second positioning rod 15 ensures that a through hole is coaxial with the boring cutter 11 during machining, so that machining accuracy is further ensured.

After the piston workpiece 9 moves to the feeding station, the material grabbing and transferring mechanism 4 is configured to transfer the piston workpiece 9 to be processed from the material seat 3 to the processing station 16 and transfer the piston workpiece 9 that is located at the processing station 16 and has been subjected to boring processing to the material returning track 8, specifically, the material grabbing and transferring mechanism 4 includes a gantry 401, a motor 402, a lead screw 403, and a moving block 404, the gantry 401 is installed on the boring processing table 5, the motor 402 is fixed on the gantry 401, an output end of the motor 402 is connected with the lead screw 403, the lead screw 403 is installed in a transverse arrangement, the moving block 404 is connected with the lead screw 403 through a lead screw nut, and the motor 402 is configured to drive the lead screw 403 to rotate, so that the moving block 404 can move transversely in a reciprocating manner. Further, the grabbing and transferring mechanism 4 further comprises a lifting cylinder 405, the lifting cylinder 405 is connected with a moving block 404, a piston rod of the lifting cylinder 405 is downward and connected with a mounting plate 406 with an L-shaped cross section, a transverse plate 407 is arranged on the front side of the mounting plate 406, a bracket 408 is arranged at one end of the transverse plate 407, a sleeve 409 is mounted on the bracket 408, a pin shaft 410 is inserted into an inner hole of the sleeve 409, the pin shaft 410 and the sleeve 409 are in clearance fit, a threaded column is arranged at the top of the pin shaft 410 and extends out of the top end of the sleeve 409, the threaded column is connected with a nut 411, a limit ring 412 is arranged at the lower part of the pin shaft 410, the outer diameter of the limit ring 412 is larger than that of the sleeve 409, therefore, the distance between the nut 411 and the limit ring 412 is the lifting range of the pin shaft 410, two spring pieces 413 are symmetrically arranged at the bottom end of the pin shaft 410, and a protrusion 414 is arranged on the outer edge of the bottom end of the spring piece 413. Preferably, the other end of the cross plate 407 is provided with a clamping jaw cylinder 415, and the clamping jaw cylinder 415 is an inner hole clamping type cylinder. When the piston workpiece 9 moves to the material feeding station, the processing station 16 is horizontally flush with the material feeding station, the piston workpiece 9 on the processing station 16 has been bored, when the moving block 404 moves to a set position, the clamping jaw cylinder 415 is located above the processing station 16, the pin shaft 410 moves to above the processing station 16, the pin shaft 410 coaxially corresponds to the inner hole of the piston workpiece 9, the lifting cylinder 405 lowers the transverse plate 407 so that the clamping jaw cylinder 415 and the pin shaft 410 are lowered simultaneously, the two spring strips 413 are gradually closed after the bottom end protrusion 414 of the pin shaft 410 is inserted into the piston inner hole, the spring strips 413 abut against the inner hole of the piston workpiece 9 under the action of elastic force, in the process, the pin shaft 410 gradually moves up until the limiting ring 412 abuts against the bottom end of the sleeve 409 to play a buffering role, meanwhile, the clamping jaw of the clamping jaw cylinder 415 at the other end of the transverse plate 407 extends into the inner hole of the piston workpiece 9 under a closed state to be expanded outward to finish clamping, the piston workpiece 9 to be processed is clamped simultaneously, the piston workpiece 9 and the piston workpiece 9 to be processed is clamped, then the piston rod 405 is lifted up and lowered, then the piston workpiece 405 is lifted and the piston workpiece 410 is lifted up and then the piston clamping jaw cylinder 410 is lifted up and lifted up until the clamping jaw cylinder 410 is released, the clamping jaw cylinder 410 is separated from the piston workpiece is released from the piston workpiece 410, and the piston workpiece is clamped by the clamping jaw cylinder 410. The force for fixing and clamping the piston workpiece 9 by the pin shaft 410 is from the elastic force action of the lifting cylinder 405 and the spring piece 413, and is different from the clamping jaw cylinder 415, the pin shaft 410 is accurate in fixed positioning and does not need to use an additional power source, because the feeding station and the machining station 16 are provided with corresponding limiting mechanisms of the piston workpiece 9, the clamping jaw cylinder 415 is passively clamped, the structure is simplified, an additional cylinder structure is not needed, the cost is reduced, the clamping jaw cylinder 415 is used because no limiting structure is arranged at the position of the material returning track 8, the clamping jaw cylinder 415 is required to actively relax the workpiece clamping, and the piston workpiece 9 can be prevented from being damaged while the inner hole clamping is stable.

Furthermore, material returned track 8 is the slope setting, material returned track 8's end is connected with the material collecting tray (not shown in the figure), puts into back automatic moving down and gets into the material collecting tray from material returned track 8's head end when clamping jaw cylinder 415 with piston work piece 9, and material returned track 8's below is still preferred to be connected with vibration mechanism, and the cooperation can vibrate and move down, prevents the putty.

The specific working principle is as follows: a worker puts a plurality of piston workpieces 9 on a conveyor belt 201 one by one, so that through holes of the piston workpieces 9 are approximately coaxial with a first positioning rod 1006, the workpieces are arranged in a row and move towards a material seat 3, the piston workpiece 9 closest to the material seat 3 can be fed into a limiting groove 301 of the material seat 3, the material seat 3 is positioned at a feeding station, the piston workpieces 9 are attached to an arc notch of a fixing block 302 and are respectively contacted with an extending part of an ejector rod 303 and an extending part of a second limiting rod 203, a second linear driving cylinder 1004 drives the first positioning rod 1006 to penetrate through a channel and insert into the through hole of the piston workpiece 9 positioned in the limiting groove 301 to complete initial positioning, then a first linear driving cylinder 1001 drives a flat plate 1002 to move so that the piston workpiece 9 on the material seat 3 moves to a material loading station, and the material loading station and a processing station 16 are horizontally level and positioned on the same straight line, at this time, the piston workpiece 9 with a bored hole is arranged on the processing station 16, the feeding station is the piston workpiece 9 to be processed and grabbed, when the moving block 404 moves to a set position, the clamping jaw cylinder 415 is positioned above the processing station 16, the pin shaft 410 moves to the position above the processing station 16, the pin shaft 410 coaxially corresponds to the inner hole of the piston workpiece 9, the lifting cylinder 405 lowers the transverse plate 407 so that the clamping jaw cylinder 415 and the pin shaft 410 descend simultaneously, the pin shaft 410 is inserted into the inner hole of the piston workpiece 9 to be processed to complete clamping, the clamping jaw cylinder 415 actively completes clamping the processed workpiece and simultaneously clamping, the first positioning rod 1006 leaves the through hole of the piston workpiece 9 before the pin shaft 410 is inserted, the feeding grabbing auxiliary positioning mechanism 10 completes resetting to feed, then the piston rod of the lifting cylinder 405 rises, then the moving block 404 is transferred to the material returning rail 8 side until the clamping jaw cylinder 415 moves to the material returning rail 8, the pin shaft 410 moves to the upper part of the processing station 16, the lifting cylinder 405 lowers the piston rod back clamping jaw cylinder 415 to actively release the piston workpiece 9, the piston workpiece 9 which is processed at the moment is sent to the material receiving disc, the piston workpiece 9 clamped by the pin shaft 410 on the processing station 16 is clamped and fixed by the clamping mechanism 6, the pin shaft 410 is separated from the piston workpiece 9 in the lifting process of the lifting cylinder 405, the second positioning rod 15 is inserted into a through hole of the piston workpiece 9 to be positioned and then retreated after the positioning, the boring processing table 5 is close to the boring cutter 11 to finish boring, and the boring processing table is reset to start the next action cycle after the boring is finished and operates in a reciprocating mode.

It should be noted that the technical features of the motor, the cylinder, etc. related to the present patent application should be regarded as the prior art, and the specific structure, the operation principle, and the control manner and the spatial arrangement manner that may be related to these technical features are conventional in the art, and should not be regarded as the point of the present patent, and the present patent is not further specifically described in detail.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: equivalent changes in structure, shape and principle of the invention should be covered by the protection scope of the invention.

Claims

1. The automatic piston boring device comprises a workbench, wherein the workbench is provided with an automatic feeding mechanism, a material seat, a grabbing and transferring mechanism, a boring processing table, a clamping mechanism, a boring driving mechanism and a material returning track, a processing station is arranged on the boring processing table, the feeding mechanism is used for feeding piston workpieces into the material seat, the grabbing and transferring mechanism is used for transferring the piston workpieces to be processed from the material seat to the processing station and transferring the piston workpieces which are positioned at the processing station and have finished boring processing to the material returning track, the clamping mechanism is used for clamping the piston workpieces positioned at the processing station before boring processing, the boring driving mechanism is connected with a boring cutter, and the boring cutter coaxially corresponds to holes to be processed of the piston workpieces positioned at the processing station.

2. An automatic piston boring device according to claim 1, wherein: the automatic feeding mechanism comprises a conveying belt, a first limiting rod and a second limiting rod are arranged on two sides of the upper portion of the conveying belt respectively, a limiting groove is formed in the material seat, and the conveying tail end of the conveying belt is in butt joint with the limiting groove of the material seat during feeding.

3. The automatic piston boring device according to claim 2, wherein: the material loading and grabbing auxiliary positioning mechanism comprises a first linear driving cylinder, a flat plate, a first guide rail, a second linear driving cylinder, a connecting block and a first positioning rod, wherein the first linear driving cylinder, the flat plate, the first guide rail, the second linear driving cylinder, the connecting block and the first positioning rod are arranged on a workbench in a longitudinal mode and are perpendicular to the conveying belt, a piston rod of the first linear driving cylinder is connected with the flat plate, the flat plate is connected with the first guide rail in a sliding mode, the material base and the second linear driving cylinder are fixedly arranged on the flat plate, an L-shaped fixing block is arranged on the material base, an arc-shaped notch coinciding with the arc-shaped edge of the limiting groove is formed in one end of the fixing block, a material ejecting rod is further connected with the fixing block in a transverse mode, the connecting block is in a '21274' shape, the connecting block is arranged around the outer side of the material base, a piston rod of the second linear driving cylinder is connected with the first positioning rod through the connecting block, a channel is reserved between the first positioning rod and the second positioning rod, the end of the second positioning rod extends to the material base, and is used for inserting the piston rod into the feeding station of the linear driving cylinder, and used for inserting the workpiece in the linear driving cylinder.

4. An automatic piston boring device according to claim 3, wherein: the boring device is characterized by further comprising a third linear driving cylinder and a second guide rail, wherein the third linear driving cylinder is fixedly connected with the boring processing table, the bottom of the boring processing table is in sliding connection with the second guide rail, and the third linear driving cylinder is used for driving the boring processing table to be close to or far away from the boring cutter.

5. The automatic piston boring device according to claim 4, wherein: the clamping mechanism comprises a fixing seat and a fourth linear driving cylinder, a supporting block is arranged on one side of the fixing seat and provided with a trapezoidal clamping groove, the fourth linear driving cylinder is transversely arranged and installed, a piston rod of the fourth linear driving cylinder is connected with a pressing block, the pressing block is opposite to the supporting block, and the fourth linear driving cylinder is used for driving the pressing block to be close to or far away from the supporting block.

6. The automatic piston boring device according to claim 5, wherein: the boring machining table is further provided with a fifth linear driving cylinder, the fifth linear driving cylinder is arranged in the longitudinal direction, a piston rod of the fifth linear driving cylinder faces the machining station and is connected with a second positioning rod, and the fifth linear driving cylinder is used for inserting the second positioning rod into an inner hole of a piston workpiece located on the machining station for positioning before boring machining.

7. The automatic piston boring device according to claim 6, wherein: the material grabbing and transferring mechanism comprises a portal frame, a motor, a lead screw and a moving block, wherein the portal frame is installed on a boring processing table, the motor is fixed on the portal frame, the output end of the motor is connected with the lead screw, the lead screw is installed in a transverse arrangement mode, the moving block is connected with the lead screw through a lead screw nut, and the motor is used for driving the lead screw to rotate so that the moving block can move in a transverse reciprocating mode.

8. An automatic piston boring device according to claim 7, wherein: grab material transfer mechanism still includes the lift cylinder, the lift cylinder is connected with the movable block, the piston rod of lift cylinder is down and be connected with the mounting panel that the cross-section is L shape, the front side of mounting panel is equipped with the diaphragm, the one end of diaphragm is equipped with the bracket, install the sleeve on the bracket, it is equipped with the round pin axle to insert in the telescopic hole, the top of round pin axle is equipped with the screw thread post just the screw thread post is stretched out from the sleeve top, the screw thread post connection has the nut, the lower part of round pin axle is equipped with the spacing ring, the external diameter of spacing ring is greater than telescopic external diameter, the bottom symmetry of round pin axle is equipped with two spring leafs, the bottom outer fringe of spring leaf is equipped with the arch.

9. An automatic piston boring device according to claim 8, wherein: the other end of diaphragm is equipped with clamping jaw cylinder, clamping jaw cylinder is hole centre gripping formula cylinder.

10. An automatic piston boring device according to claim 9, wherein: the material returning rail is obliquely arranged, and the tail end of the material returning rail is connected with the material receiving box.