A piston automatic boring device

Abstract

The application discloses a piston automatic boring device, which comprises a workbench, an automatic feeding mechanism, a material seat, a material grabbing and transferring mechanism, a boring machining table, a material clamping mechanism, a boring driving mechanism and a material returning track. The boring machining table is provided with a machining station. The feeding mechanism is used for feeding piston workpieces into the material seat. The material grabbing and transferring mechanism is used for transferring the piston workpieces to be machined from the material seat to the machining station and transferring the piston workpieces, which have completed boring machining and are located in the machining station, to the material returning track. The material clamping mechanism is used for clamping the piston workpieces located in the machining station before boring machining. The boring driving mechanism is connected with a boring cutter. The device realizes automatic boring machining of piston workpieces. After workers complete feeding of a certain number of workpieces, subsequent actions are automatically performed. The device has a simple and compact structure and is effective, greatly improves machining efficiency, saves labor and ensures machining precision.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automation equipment, in particular to a piston automatic boring device. BACKGROUND

[0002] The piston is a reciprocating machine in the cylinder block of the automobile engine. The basic structure of the piston can be divided into a top, a head and a skirt. The piston top is the main part of the combustion chamber, and its shape is related to the selected combustion chamber form. The gasoline engine usually adopts a flat-top piston, and its advantage is small heat absorption area. The piston top of the diesel engine often has various pits, and the specific shape, position and size thereof must be adapted to the requirements of the formation and combustion of the diesel engine mixture.

[0003] A piston workpiece needs to be bored when being processed. Boring can enlarge the hole diameter, improve the precision, reduce the surface roughness, and also can better correct the original hole axis deviation. In the prior art, workers manually put the workpiece into the clamp and then control the boring machine to bore the piston workpiece. After completion, the workpiece is taken out from the clamp. This kind of mode has low efficiency and high labor intensity of workers. Therefore, it is necessary to design a piston automatic boring device to solve the above technical problems. SUMMARY

[0004] To solve the above technical problems, the present application relates to a piston automatic boring device, which is simple and reliable, effectively solves the above technical problems, and is suitable for popularization and use. In order to achieve the above purpose, the present application realizes the technical scheme as follows:

[0005] The piston automatic boring device comprises a workbench, an automatic feeding mechanism, a material seat, a grabbing and transferring mechanism, a boring machining table, a material clamping mechanism, a boring driving mechanism and a material withdrawing track. The boring machining table is provided with a machining station. The feeding mechanism is used to send the piston workpiece into the material seat. The grabbing and transferring mechanism is used to transfer the piston workpiece to be machined from the material seat to the machining station, and transfer the piston workpiece which has completed boring machining and is located in the machining station to the material withdrawing track. The material clamping mechanism is used to clamp the piston workpiece located in the machining station before boring machining. The boring driving mechanism is connected with a boring cutter. The boring cutter is coaxial with the hole to be machined of the piston workpiece located in the machining station.

[0006] As a preferred scheme of the above scheme, the automatic feeding mechanism comprises a conveying belt. First and second limiting rods are arranged above both sides of the conveying belt. Limiting grooves are arranged on the material seat. The transmission end of the conveying belt is opposite to the limiting grooves of the material seat when feeding.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: it further includes an auxiliary positioning mechanism for grabbing and feeding, which is used for positioning the piston workpiece transferred to the material seat, and the auxiliary positioning mechanism for grabbing and feeding includes a first linear drive cylinder, a flat plate, a first guide rail, a second linear drive cylinder, a connecting block, a first positioning rod, the first guide rail is arranged and installed along the longitudinal direction on the workbench and is perpendicular to the conveying belt, the piston rod of the first linear drive cylinder is connected with the flat plate, the flat plate is in sliding connection with the first guide rail, the material seat and the second linear drive mechanism are fixedly arranged on the flat plate, the material seat is provided with an L-shaped fixing block, one end of the fixing block is provided with an arc-shaped notch coinciding with the arc-shaped side of the limiting groove, the fixing block is further connected with a crosswise arranged ejecting rod, the connecting block is in the shape of a Chinese character 'fang', the connecting block is wrapped outside the material seat, the piston rod of the second linear drive cylinder is connected with the first positioning rod through the connecting block, a channel is left between the first limiting rod and the fixing block, the end portion of the second limiting rod extends above the material seat, and the first linear drive cylinder is used for driving the material seat to transfer between the feeding station and the feeding station.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: it further includes a third linear drive cylinder and a second guide rail, the third linear drive cylinder is fixedly connected with the boring machining table, the bottom of the boring machining table is in sliding connection with the second guide rail, and the third linear drive cylinder is used for driving the boring machining table to approach or move away from the boring cutter.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the material clamping mechanism includes a fixed seat, a fourth linear drive cylinder, one side of the fixed seat is provided with a supporting block, the supporting block is provided with a trapezoidal clamping groove, the fourth linear drive cylinder is arranged and installed along the transverse direction, the piston rod of the fourth linear drive cylinder is connected with a pressing block, the pressing block is arranged opposite to the supporting block, and the fourth linear drive cylinder is used for driving the pressing block to approach or move away from the supporting block.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: the boring machining table is further provided with a fifth linear drive cylinder, the fifth linear drive cylinder is arranged and installed along the longitudinal direction, the piston rod of the fifth linear drive cylinder is connected with a second positioning rod and faces the machining station, and the fifth linear drive cylinder is used for inserting the second positioning rod into the inner hole of the piston workpiece located in the machining station for positioning before boring machining.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme: the material grabbing and transferring mechanism comprises a portal frame, a motor, a screw rod and a moving block, the portal frame is installed on the boring machining table, the motor is fixed on the portal frame, the output end of the motor is connected with the screw rod, the screw rod is arranged and installed along the transverse direction, the moving block is connected with the screw rod through a nut, and the motor is used for driving the screw rod to rotate so that the moving block can reciprocate along the transverse direction.

[0012] On the basis of the above scheme and as a preferred scheme of the above scheme: the material grabbing and transferring mechanism further comprises a lifting cylinder, the lifting cylinder is connected with the moving block, the piston rod of the lifting cylinder faces downward and is connected with an L-shaped mounting plate, the front side of the mounting plate is provided with a horizontal plate, one end of the horizontal plate is provided with a bracket, a sleeve is installed on the bracket, a pin shaft is inserted into the inner hole of the sleeve, the top of the pin shaft is provided with a threaded column and the threaded column extends out of the top end of the sleeve, the threaded column is connected with a nut, the lower part of the pin shaft is provided with a limiting ring, the outer diameter of the limiting ring is larger than the outer diameter of the sleeve, the bottom end of the pin shaft is symmetrically provided with two spring sheets, and the bottom end outer edge of the spring sheet is provided with a protrusion.

[0013] On the basis of the above scheme and as a preferred scheme of the above scheme: the other end of the horizontal plate is provided with a clamping jaw cylinder, and the clamping jaw cylinder is an inner hole clamping type cylinder.

[0014] On the basis of the above scheme and as a preferred scheme of the above scheme: the material returning track is arranged in an inclined manner, and the end of the material returning track is connected with the material collecting box.

[0015] Compared with the prior art, the device realizes automatic boring machining of the piston workpiece, subsequent actions are automatically performed after a worker completes feeding of a certain number of workpieces, the position accuracy of the piston workpiece is ensured through multiple positioning, the structure is simple, compact and effective, the machining efficiency is greatly improved, and the machining precision is ensured while the labor is saved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a first perspective view of the overall structure;

[0017] Figure 2 is a second perspective view of the overall structure;

[0018] Figure 3 is a pin shaft schematic view;

[0019] Figure 4 is Figure 2 is an enlarged view of position A in the figure;

[0020] Figure 5 is a piston workpiece schematic view. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments. However, the following specific embodiments and examples are only for illustrative purposes, and are not a limitation on the present application.

[0022] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the accompanying drawings, and is only for the purpose of facilitating the description of the present application, and is not indicative or implied that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Figure 1 The orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the accompanying drawings, and is only for the purpose of facilitating the description of the present application, and is not indicative or implied that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0023] In the description of the present application, the terms "first", "second" and the like are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated.

[0024] A piston workpiece needs to be bored when machining, and the through hole can be enlarged in diameter, improve the precision, reduce the surface roughness, and also can better correct the original hole axis deviation, in the prior art, workers usually manually put the material into the clamp and control the boring machine to bore the piston workpiece 9, and then take it out from the clamp, this kind of mode is low in efficiency, and the labor intensity of workers is large, in order to solve the above technical problems, such as Figures 1-5 The present application 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 machining table 5, a material clamping mechanism 6, a boring driving mechanism 7 and a material withdrawing track 8.

[0025] Specifically, the automatic feeding mechanism 2 comprises a conveying belt 201, two sides above the conveying belt 201 are respectively provided with a first limiting rod 202 and a second limiting rod 203, the first limiting rod 202 and the second limiting rod 203 are connected with the side mounting blocks through bolts and are fixed on the workbench 1 through the mounting blocks, the material seat 3 is provided with a limiting groove 301, the transmission end of the conveying belt 201 is opposite to the limiting groove 301 of the material seat 3 during feeding, the conveying belt 201 can be operated in a reciprocating cycle for transportation and transfer, when the workers put the piston workpieces 9 to be processed into the conveying belt 201, the workpieces will move to the material seat 3 along with the conveying belt 201, the distance between the first limiting rod 202 and the second limiting rod 203 matches the outer diameter of the piston workpiece 9, so that the first limiting rod 202 and the second limiting rod 203 can limit the piston workpiece 9, so that a plurality of workpieces are arranged in a row to move to the material seat 3, and the piston workpiece 9 closest to the material seat 3 will be sent into the limiting groove 301 of the material seat 3.

[0026] Further, the feeding and grabbing auxiliary positioning mechanism 10 is further included for positioning the piston workpiece 9 transferred to the material seat 3, the feeding and grabbing auxiliary positioning mechanism 10 includes a first linear drive cylinder 1001, a flat plate 1002, a first guide rail 1003, a second linear drive cylinder 1004, a connecting block 1005, a first positioning rod 1006, the first guide rail 1003 is arranged and installed on the workbench 1 along the longitudinal direction and is perpendicular to the conveying belt 201, the piston rod of the first linear drive 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 drive cylinder 1001 can drive the flat plate 1002 to reciprocate along the first guide rail 1003, the material seat 3 and the second linear drive mechanism are fixed on the flat plate 1002, the material seat 3 is provided with an L-shaped fixing block 302, one end of the fixing block 302 is provided with an arc-shaped notch coinciding with the arc-shaped side of the limiting groove 301, the fixing block 302 is further connected with a crosswise arranged material lifting rod 303, the connecting block 1005 is in the shape of a Chinese character “fang”, the connecting block 1005 is wrapped outside the material seat 3, the piston rod of the second linear drive cylinder 1004 is connected with the first positioning rod 1006 through the connecting block 1005, the axis of the first positioning rod 1006 is parallel to the axis of the boring cutter 11, a channel is left between the first limiting rod 202 and the fixing block 302, the end of the second limiting rod 203 extends above the material seat 3, the worker places the through hole of the piston workpiece 9 coaxially with the first positioning rod 1006 on the conveying belt 201, due to the deviation of the axis direction of the through hole when placed manually, when the piston workpiece 9 enters the material seat 3 at the feeding station, the arc-shaped notch of the fixing block 302 is fitted, and the extending part of the material lifting rod 303 and the second limiting rod 203 are in contact, the second linear drive cylinder 1004 drives the first positioning rod 1006 to pass through the channel and insert into the through hole of the piston workpiece 9 in the limiting groove 301, so as to complete the initial positioning, then the first linear drive cylinder 1001 drives the flat plate 1002 to move, so that the piston workpiece 9 on the material seat 3 moves to the feeding station, the boring machining table 5 is provided with a machining station 16, the feeding station is horizontally flush with the machining station 16 on the same straight line, the first positioning rod 1006 is always inserted into the through hole of the piston workpiece 9 during the transfer process to prevent deviation, the second linear drive cylinder 1004 drives the first positioning rod 1006 to move out of the through hole of the piston workpiece 9 before the piston workpiece 9 is transferred to the feeding station and grabbed by the grabbing transfer mechanism 4 to prevent interference, and the whole mechanism returns to the original position after the piston workpiece 9 is grabbed.The auxiliary positioning mechanism 10 can automatically position the piston workpiece 9 sent from the conveying belt 201, and ensure that the piston workpiece 9 is coaxially arranged with the boring tool 11 during feeding. The mechanical positioning method is accurate, efficient, simple in structure, durable, and convenient to maintain, and does not require the use of additional sensors. Workers can free up time to perform other operations after placing a certain number of workpieces on the conveying belt 201 for subsequent automatic feeding.

[0027] The boring driving mechanism 7 is connected with the boring tool 11. The boring driving mechanism 7 is a conventional boring machine structure, and the boring tool 11 is driven by a motor. The specific driving form of the boring tool 11 is a prior art, which will not be described further in this specification. The boring tool 11 is coaxially arranged with the hole to be machined of the piston workpiece 9 on the machining station 16.

[0028] The device also includes a third linear drive cylinder 12 and a second guide rail 13. The third linear drive cylinder 12 is fixedly connected with the boring machining table 5, and the boring machining table 5 is slidably connected with the second guide rail 13. The second guide rail 13 is arranged longitudinally. In this embodiment, the number of second guide rails 13 is two, which improves the carrying capacity. When the piston workpiece 9 is transferred to the machining station 16 on the boring machining table 5, the third linear drive cylinder 12 is used to drive the boring machining table 5 to move close to the boring tool 11, and the boring tool 11 remains in a rotating state. Thus, the piston workpiece 9 on the machining station 16 can be bored to meet the machining precision requirements.

[0029] Considering that the piston workpiece 9 needs to be fixed during boring, the material clamping mechanism 6 can clamp the piston workpiece 9 on the machining station 16 before boring. Specifically, the material clamping mechanism 6 includes a fixed seat 601 and a fourth linear drive cylinder 602. One side of the fixed seat 601 is provided with a support block 603, which is provided with a trapezoidal clamping groove. The fourth linear drive cylinder 602 is arranged in a transverse direction. The piston rod of the fourth linear drive cylinder 602 is connected with a pressing block 604, which is arranged opposite to the support block 603. When the piston workpiece 9 is placed on the machining station 16, the fourth linear drive cylinder 602 drives the pressing block 604 to move close to the support block 603 until the piston workpiece 9 is clamped. Through the cooperation of the pressing block 604 and the support block 603, the piston workpiece 9 is limited by the trapezoidal clamping groove, preventing the piston workpiece 9 from moving during boring and affecting the boring precision.

[0030] In consideration of the possibility of the piston workpiece 9 being offset during clamping, the boring machining station 5 is further provided with a fifth linear drive cylinder 14 arranged and installed in the longitudinal direction, the piston rod of the fifth linear drive cylinder 14 is connected with a second positioning rod 15 and faces the machining station 16, when the clamping of the piston workpiece 9 is completed, the fifth linear drive cylinder 14 is used to insert the second positioning rod 15 into the inner hole of the piston workpiece 9 located in the machining station 16 for positioning before boring machining, the secondary positioning by the second positioning rod 15 ensures that the through hole is coaxial with the boring cutter 11 during machining, further ensuring the machining precision.

[0031] When the piston workpiece 9 moves to the feeding station, the grabbing transfer mechanism 4 is used to transfer the piston workpiece 9 to be processed from the feeding rack 3 to the processing station 16 while transferring the piston workpiece 9 that has completed the boring processing in the processing station 16 to the discharging track 8. Specifically, the grabbing transfer mechanism 4 comprises 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. The output end of the motor 402 is connected with the lead screw 403. The lead screw 403 is installed along the transverse direction. The moving block 404 is connected with the lead screw 403 through a lead screw nut. The motor 402 is used to drive the lead screw 403 to rotate so that the moving block 404 can move reciprocally along the transverse direction. Further, the grabbing transfer mechanism 4 further comprises a lifting cylinder 405. The lifting cylinder 405 is connected with the moving block 404. The piston rod of the lifting cylinder 405 faces downward and is connected with an L-shaped mounting plate 406. The front side of the mounting plate 406 is provided with a horizontal plate 407. One end of the horizontal plate 407 is provided with a bracket 408. A sleeve 409 is installed on the bracket 408. A pin shaft 410 is inserted into the inner hole of the sleeve 409. The pin shaft 410 is clearance-fitted with the sleeve 409. The top of the pin shaft 410 is provided with a threaded column which extends out of the top end of the sleeve 409. The threaded column is connected with a nut 411. The lower part of the pin shaft 410 is provided with a limiting ring 412. The outer diameter of the limiting ring 412 is larger than the outer diameter of the sleeve 409. Therefore, the distance between the nut 411 and the limiting ring 412 is the lifting range of the pin shaft 410. The bottom end of the pin shaft 410 is symmetrically provided with two spring sheets 413. The bottom end of the spring sheet 413 is provided with a protrusion 414.When the piston workpiece 9 moves to the feeding station, at this time the machining station 16 is transversely flush with the feeding station, the piston workpiece 9 on the machining station 16 has completed the boring machining, the moving block 404 moves to the set position, the clamping jaw cylinder 415 is located above the machining station 16, the pin shaft 410 moves to above the machining station 16, the pin shaft 410 is coaxial with the inner hole of the piston workpiece 9, the lifting cylinder 405 lowers the cross plate 407 so that the clamping jaw cylinder 415 and the pin shaft 410 are lowered at the same time, the bottom end protrusion 414 of the pin shaft 410 is inserted into the piston inner hole, and the two spring sheets 413 gradually approach, and the spring sheets 413 are tightly pressed against the inner hole of the piston workpiece 9 under the action of the elastic force, in this process, the pin shaft 410 gradually moves upward until the limiting ring 412 abuts against the bottom end of the sleeve 409, which plays a buffering role, at the same time, the clamping jaws of the clamping jaw cylinder 415 on the other end of the cross plate 407 extend into the inner hole of the piston workpiece 9 in the close state and then unfold outward, thereby completing the clamping, the machined piston workpiece 9 and the machined piston workpiece 9 are clamped at the same time, then the piston rod of the lifting cylinder 405 is raised, then the moving block 404 shifts to one side of the feeding rail 8 until the clamping jaw cylinder 415 moves to above the feeding rail 8, and the pin shaft 410 moves to above the machining station 16, after the piston rod of the lifting cylinder 405 is lowered, the clamping jaw cylinder 415 can actively release the piston workpiece 9, and the piston workpiece 9 clamped by the pin shaft 410 is clamped and fixed by the clamping mechanism 6, and the pin shaft 410 is separated from the piston workpiece 9 in the process of the lifting cylinder 405 being raised. The force of the pin shaft 410 for clamping and fixing the piston workpiece 9 comes from the elastic force of the lifting cylinder 405 and the spring sheets 413, and is different from the clamping jaw cylinder 415, which is accurately fixed and positioned without using an additional power source, because there is a limiting mechanism of the piston workpiece 9 corresponding to the feeding station and the machining station 16, and the workpiece can be clamped passively, which simplifies the structure, does not need to use an additional cylinder structure, and reduces the cost, and the clamping jaw cylinder 415 is used because there is no limiting structure at the position of the feeding rail 8, and the clamping jaw cylinder 415 needs to actively release the workpiece clamping, the inner hole clamping is relatively stable, and the piston workpiece 9 can be prevented from being damaged.

[0032] Further, the feeding rail 8 is obliquely arranged, and the end of the feeding rail 8 is connected with a material collecting disc (not shown in the figure), when the clamping jaw cylinder 415 puts the piston workpiece 9 from the head end of the feeding rail 8, the clamping jaw cylinder 415 automatically moves downward into the material collecting disc, and the lower part of the feeding rail 8 is preferably connected with a vibrating mechanism, which can vibrate and move downward to prevent the material from being blocked.

[0033] Specific working principle: the workers place a plurality of piston workpieces 9 on the conveying belt 201 one by one, so that the through holes of the piston workpieces 9 are approximately coaxial with the first positioning rod 1006, and the plurality of workpieces are arranged in a row to move towards the material seat 3, the piston workpiece 9 closest to the material seat 3 is sent into the limiting groove 301 of the material seat 3, at this time the material seat 3 is in the feeding station, the piston workpiece 9 is fitted with the arc-shaped notch of the fixed block 302, and is in contact with the extension part of the second limiting rod 203 and the ejecting rod 303 respectively, the second linear drive cylinder 1004 drives the first positioning rod 1006 to pass through the through hole of the piston workpiece 9 located in the limiting groove 301 to complete the initial positioning, and then the first linear drive cylinder 1001 drives the flat plate 1002 to move so that the piston workpiece 9 on the material seat 3 moves to the feeding station, at this time the feeding station and the machining station 16 are transversely flush on the same straight line, at this time the machining station 16 is provided with the piston workpiece 9 which has completed the boring, and the feeding station is provided with the piston workpiece 9 to be machined, the moving block 404 moves to the set position, the clamping jaw cylinder 415 is located above the machining station 16, the pin shaft 410 moves to above the machining station 16, the pin shaft 410 is coaxial with the inner hole of the piston workpiece 9, the lifting cylinder 405 lowers the cross plate 407 so that the clamping jaw cylinder 415 and the pin shaft 410 are lowered at the same time, the pin shaft 410 is inserted into the inner hole of the piston workpiece 9 to be machined to complete clamping, the clamping jaw cylinder 415 actively completes clamping of the machined workpiece, at the same time, the first positioning rod 1006 leaves the through hole of the piston workpiece 9 before the pin shaft 410 is inserted, the feeding and grabbing auxiliary positioning mechanism 10 completes resetting to feed, then the piston rod of the lifting cylinder 405 rises, then the moving block 404 shifts to one side of the discharging track 8 until the clamping jaw cylinder 415 moves to above the discharging track 8, and the pin shaft 410 moves to above the machining station 16, after the piston rod of the lifting cylinder 405 is lowered, the clamping jaw cylinder 415 can actively release the piston workpiece 9, at this time the piston workpiece 9 which has completed machining is sent into the material collecting disc, and the piston workpiece 9 clamped and fixed by the pin shaft 410 on the machining 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, at this time the second positioning rod 15 is inserted into the through hole of the piston workpiece 9 to position, and then the boring machining table 5 approaches the boring cutter 11 to complete boring, and after boring is completed, the boring machining table 5 resets to start the next action cycle and reciprocally operates.

[0034] It is worth noting that the motor, cylinder and other technical features involved in the present application should be regarded as prior art, the specific structure, working principle and possible control mode and spatial arrangement mode of these technical features can be selected by using the conventional selection in the field, and should not be regarded as the invention point of the present application, and the present application will not be further expanded and described in detail.

[0035] The above embodiments are only the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: equivalent changes made by those skilled in the art according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A piston automatic boring device, comprising a workbench, the workbench is provided with an automatic feeding mechanism, a material seat, a material grabbing and transferring mechanism, a boring machining table, a material clamping mechanism, a boring driving mechanism and a material returning track, the boring machining table is provided with a machining station, the feeding mechanism is used for feeding piston workpieces into the material seat, the material grabbing and transferring mechanism is used for transferring piston workpieces to be machined from the material seat to the machining station while transferring piston workpieces that have completed boring machining from the machining station to the material returning track, the material clamping mechanism is used for clamping the piston workpieces on the machining station before boring machining, the boring driving mechanism is connected with a boring tool, and the boring tool is coaxially corresponding to the hole to be machined of the piston workpiece on the machining station; the automatic feeding mechanism comprises a conveying belt, first and second limiting rods are respectively arranged above both sides of the conveying belt, and the material seat is provided with a limiting groove; when feeding, the transmission end of the conveying belt is opposite to the limiting groove of the material seat; further comprising a feeding grabbing auxiliary positioning mechanism, the feeding grabbing auxiliary positioning mechanism is used for positioning the piston workpieces transferred to the material seat, and the feeding grabbing auxiliary positioning mechanism comprises a first linear drive cylinder, a flat plate, a first guide rail, a second linear drive cylinder, a connecting block and a first positioning rod; the first guide rail is arranged and installed on the workbench in the longitudinal direction and is perpendicular to the conveying belt; the piston rod of the first linear drive cylinder is connected with the flat plate; the flat plate is in sliding connection with the first guide rail; the material seat and the second linear drive cylinder are fixed on the flat plate; the material seat is provided with an L-shaped fixing block; one end of the fixing block is provided with an arc-shaped notch coinciding with the arc-shaped side of the limiting groove; the fixing block is further connected with a material lifting rod arranged in the transverse direction; the connecting block is in the shape of a Chinese character "fang"; the connecting block is wrapped outside the material seat; the piston rod of the second linear drive cylinder is connected with the first positioning rod through the connecting block; a channel is left between the first limiting rod and the fixing block; the end of the second limiting rod extends above the material seat; the first linear drive cylinder is used for driving the material seat to transfer between the feeding station and the feeding station; and the second linear drive cylinder is used for driving the first positioning rod to pass through the through hole of the piston workpiece in the limiting groove. the material clamping mechanism comprises a fixed seat and a fourth linear drive cylinder; one side of the fixed seat is provided with a supporting block; the supporting block is provided with a trapezoidal clamping groove; the fourth linear drive cylinder is arranged and installed in the transverse direction; the piston rod of the fourth linear drive cylinder is connected with a pressing block; the pressing block is arranged opposite to the supporting block; and the fourth linear drive cylinder is used for driving the pressing block to approach or move away from the supporting block; the boring machining table is further provided with a fifth linear drive cylinder; the fifth linear drive cylinder is arranged and installed in the longitudinal direction; the piston rod of the fifth linear drive cylinder is connected with a second positioning rod and faces the machining station; and the fifth linear drive cylinder is used for inserting the second positioning rod into the inner hole of the piston workpiece on the machining station before boring machining to position the piston workpiece.

2. A device for automatic boring of a piston according to claim 1, characterized in that: The third linear driving cylinder is fixedly connected with the boring machining table, the bottom of the boring machining table is slidably connected with the second guide rail, and the third linear driving cylinder is used for driving the boring machining table to move close to or away from the boring cutter.

3. A device for boring a piston according to claim 2, characterized in that: The material grabbing and transferring mechanism comprises a portal frame, a motor, a screw rod and a moving block, the portal frame is installed on the boring machining table, the motor is fixed on the portal frame, the output end of the motor is connected with the screw rod, the screw rod is installed along the transverse direction, the moving block is connected with the screw rod through a screw nut, and the motor is used for driving the screw rod to rotate so that the moving block can move reciprocatingly along the transverse direction.

4. A device for boring a piston hole according to claim 3, characterized in that: The material grabbing and transferring mechanism further comprises a lifting cylinder, the lifting cylinder is connected with the moving block, the piston rod of the lifting cylinder is downwardly arranged and is connected with an L-shaped mounting plate, the front side of the mounting plate is provided with a horizontal plate, one end of the horizontal plate is provided with a bracket, a sleeve is installed on the bracket, a pin shaft is inserted into the inner hole of the sleeve, the top of the pin shaft is provided with a threaded column which extends out of the top end of the sleeve, the threaded column is connected with a nut, the lower part of the pin shaft is provided with a limiting ring, the outer diameter of the limiting ring is larger than the outer diameter of the sleeve, the bottom end of the pin shaft is symmetrically provided with two spring sheets, and the bottom end of the spring sheet is provided with a protrusion.

5. A device for boring a piston hole according to claim 4, characterized in that: The other end of the horizontal plate is provided with a clamping jaw cylinder, and the clamping jaw cylinder is an inner hole clamping type cylinder.

6. A device for boring a piston hole according to claim 5, characterized in that: The material returning track is arranged in an inclined manner, and the end of the material returning track is connected with the material collecting box.

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