Boring process and device for processing automobile forging parts

Abstract

The application relates to the boring process technical field and discloses a boring process and device based on automobile forging piece machining, wherein an electric sliding rail is arranged in a machining lathe, a boring assembly is fixedly installed at the lower end of the electric sliding rail, a forging piece is fixedly arranged at the lower end in the machining lathe through a mechanical chuck, after positioning of a laser displacement sensor, a connecting shell, an adjusting disc and a connecting rod two are driven to rotate by a driving motor, a conical polishing roller one at the lower end of a hydraulic rod three shell is synchronously driven to rotate, through a sliding block connected by an arc-shaped connecting rod one, an extension column and an arc-shaped connecting rod two, a conical polishing roller two is driven to be symmetrically distributed on both sides of a prefabricated hole, after the hydraulic rod three is inserted into the conical polishing roller two, a micro electric telescopic rod drives a rack gear to mesh with a gear, so that a water-drop-shaped boring cutter is extended and clamped in a clamping groove of the conical polishing roller two, the two polishing rollers are synchronously rotated in an hourglass shape, the synchronous polishing of the edges on both sides of the prefabricated hole can be completed without overturning the forging piece, and the problem of inconsistent progress on both sides and secondary trimming is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of boring process, in particular to a boring process and device for processing automobile forged parts. BACKGROUND

[0002] In the field of automobile manufacturing, the machining precision of automobile forged parts as key components is crucial to the performance and reliability of automobiles. Boring process is an important means for machining holes of automobile forged parts, and is commonly used for machining workpieces such as engine blocks, bearing holes, and cylinder sleeves. It can achieve accurate size, shape, and smoothness of the hole. With the development of the automobile industry, the precision and efficiency of forged part processing are increasingly required. Traditional boring process and device have many limitations, for example, some traditional boring equipment cannot complete multiple processes such as rough boring, hole expanding, slotting, and fine boring in the same station. It needs to frequently disassemble and reassemble the workpiece and replace the equipment. This not only leads to a decline in machining precision due to differences in positioning standards of different equipment, but also requires repeated calibration of the rotating shaft, which seriously affects the processing efficiency. For some special automobile forged parts, such as drive axle housings, boring processing directly affects the driving performance and safety of vehicles. However, when traditional boring devices process axle housings, the cutter is prone to vibration and deviation at high speed, resulting in a decline in machining precision and exacerbating cutter wear, and even causing cutter breakage, affecting the surface quality of the workpiece and the service life of the cutter.

[0003] For example, the Chinese patent with publication number CN119426665B discloses a boring device and method for processing automobile engine cylinder covers. When the boring cutter moves coaxially with the moving rod, it can process holes on the cylinder cover corresponding to the size of the boring cutter by rotating the boring cutter. When the boring cutter moves in a parallel and offset manner with the center axis of the moving rod, it can process larger size holes on the cylinder cover by rotating the boring cutter. The boring cutter performs boring processing on the inner wall of the larger size hole.

[0004] For the above and existing related technologies, the inventors believe that the following defects often exist: In the prior art, most polishing equipment lacks an effective method for simultaneously polishing the edges of both sides of the preformed hole. For some automated equipment, although it can polish the edges of the hole, it cannot simultaneously control the edges of both sides, resulting in inconsistent polishing progress on both sides, which consumes more time in subsequent secondary finishing, reduces production efficiency, and the angle of the edge polishing of the same forged part is different, making it difficult for the polishing device to adapt to different angle requirements. SUMMARY

[0005] The technical problem to be solved by the present application is that the prior art lacks a method for simultaneously polishing the edges of both sides of the preformed hole and angle adaptability adjustment. Therefore, we propose a boring process and device for processing automobile forged parts.

[0006] In order to achieve the above object, the technical scheme adopted by the present application is as follows: the machining device based on automobile forging parts comprises a machining lathe, an electric sliding rail is arranged inside the machining lathe, a boring assembly is fixedly installed at the lower end of the electric sliding rail, a forging part is fixedly arranged at the lower end inside the machining lathe through a mechanical chuck, the boring assembly comprises a hydraulic rod one, a connecting rod one is fixedly installed at the driving end of the hydraulic rod one, a boring mechanism is rotatably installed at the lower end inside the connecting rod one, the boring mechanism comprises a driving motor, the driving motor housing is fixedly connected with the connecting rod one, a connecting shell is fixedly installed at the driving end of the driving motor, the connecting shell is rotatably connected with the connecting rod one, a rotating shaft is movably arranged at the lower end of the connecting shell, a fixing frame is fixedly installed inside the connecting shell, an adjusting disc is rotatably installed inside the fixing frame, a connecting rod two is fixedly installed at the lower end of the adjusting disc, a hydraulic rod two is fixedly installed on the upper end of the inner wall of the connecting shell, a connecting shaft is rotatably installed at the driving end of the hydraulic rod two, the connecting shaft is fixedly connected with the adjusting disc, a hydraulic rod three is fixedly installed at the lower end inside the connecting rod two, a polishing roller is fixedly installed at the driving end of the hydraulic rod three, a placing groove is formed in the polishing roller, a boring cutter is rotatably installed inside the placing groove, a gear is fixedly installed on one side of the boring cutter, the gear is located inside the polishing roller and is rotatably connected with the polishing roller, a micro electric telescopic rod is arranged at the driving end inside the hydraulic rod three, a rack is fixedly installed at the driving end of the micro electric telescopic rod penetrating through the hydraulic rod three and the polishing roller, the rack is slidably connected with the polishing roller, the rack is engaged with the gear, a conical polishing roller one is fixedly installed at the lower end of the hydraulic rod three housing, the conical polishing roller one is located outside the polishing roller and is slidably connected with the polishing roller, an arc-shaped connecting rod one is fixedly installed outside the connecting rod one, an extension column is slidably arranged at the lower end of the arc-shaped connecting rod one, an arc-shaped connecting rod two is slidably installed at the lower end of the extension column, a sliding block is fixedly installed at the lower end of the arc-shaped connecting rod two, the sliding block is slidably connected with the machining lathe, a conical polishing roller two is slidably installed inside the sliding block, a plurality of clamping grooves are formed in the conical polishing roller two, the width of the clamping grooves is the same as the width of the boring cutter, the boring cutter can be rotatably clamped with the clamping grooves, so as to realize synchronous polishing of the edges on both sides of the prefabricated hole and edge polishing of the angle of inclination.

[0007] Preferably, a plurality of damping buffer rings are arranged outside the hydraulic rod one, the damping buffer rings are closely attached to the connecting rod one, the damping buffer rings are fixedly connected with the outer wall of the hydraulic rod one through buffer rods, the damping buffer rings are at least provided with 2 groups and are uniformly distributed along the axial direction of the hydraulic rod one, which are used for absorbing and dispersing the vibration of the connecting rod one during rotation, so as to avoid the vibration being concentrated at the connecting part of the connecting rod one and the boring mechanism.

[0008] Preferably, a laser displacement sensor is arranged outside the connecting rod one, the laser displacement sensor is at least provided with 2 groups and is circumferentially distributed along the axial direction of the connecting rod, the detection end of the laser displacement sensor faces the prefabricated hole direction of the forging part, which is used for positioning the center and edge position of the prefabricated hole.

[0009] Preferably, the hydraulic rod two is arranged radially along the connecting shell, the connecting shaft is fixedly connected with the eccentric position on the upper end of the adjusting disc, the hydraulic rod two can drive the adjusting disc to rotate around the rotating shaft when the hydraulic rod two is extended or retracted, and then the inclination angle of the connecting rod two and the hydraulic rod three is adjusted.

[0010] Preferably, the inclination sensor is fixedly installed on the upper end of the fixed frame, the inclination sensor is fixedly attached to the upper end surface of the fixed frame, the detection axis of the inclination sensor is parallel to the axis of the adjusting disc, and the inclination sensor is used to capture the inclination angle information of the adjusting disc.

[0011] Preferably, the outer side of the polishing roller is composed of an arc surface and a plane, the polishing roller is coaxially fixed with the driving end of the hydraulic rod three, and the installation groove is arranged along the axial direction of the polishing roller.

[0012] Preferably, the conical polishing roller one is a hollow conical structure, the large-diameter end is fixedly connected with the lower end of the hydraulic rod three shell, the small-diameter end faces away from the hydraulic rod three, and the inner wall of the conical polishing roller one is slidably attached to the outer wall of the polishing roller.

[0013] Preferably, the clamping grooves are uniformly distributed along the axial direction of the conical polishing roller two, and the boring cutter can drive the conical polishing roller two to rotate synchronously after being clamped with the clamping grooves.

[0014] Preferably, the conical polishing roller one and the conical polishing roller two have the same diameter, and when the driving motor drives and the connecting rod one moves slightly up and down, the conical polishing roller one and the conical polishing roller two rotate synchronously in a sandglass shape to fully polish the fillet of the edges of the two ends of the preformed hole.

[0015] A boring process based on automobile forging part machining is used for the implementation of an automobile forging part machining device, and includes the following steps:

[0016] S1: Place the automobile forging part to be machined into the lower end of the machining lathe, clamp and fix the forging part by the self-centering six-jaw chuck, start the motor at the lower end of the chuck to make the chuck enter the self-locking rotating state, ensure that the forging part does not displace during the machining process, start the electric sliding rail in the machining lathe to drive the boring assembly to move horizontally, and at the same time, start the laser displacement sensor on the outer side of the connecting rod one to detect and position the center and edge of the preformed hole on the forging part, after positioning is completed, control the electric sliding rail to drive the boring assembly to move to the position directly above the preformed hole;

[0017] S2: start the hydraulic rod one in the boring assembly, control the driving end of the hydraulic rod one to extend, drive the connecting rod one and the boring mechanism at the lower end to move down synchronously until the conical polishing roller one is close to the outer edge of the preformed hole, stop the extension action of the hydraulic rod one, start the driving motor in the boring mechanism, the driving motor drives the connecting shell, the adjusting disc, the connecting rod two and the hydraulic rod three to rotate synchronously at high frequency, and further drives the conical polishing roller one to rotate, and at the same time, control the hydraulic rod one to extend and retract slightly, drive the conical polishing roller one to move up and down, and polish the outer edge contour of the preformed hole regularly and carefully, and in the polishing process, the damping buffer ring outside the hydraulic rod one is closely attached to the connecting rod one, absorbs and disperses the vibration generated by rotation;

[0018] S3: when the preformed hole has a special inclined angle or inclined edge, start the inclination sensor at the upper end of the fixed frame, capture the inclination angle information of the preformed hole by the inclination sensor, start the hydraulic rod two on the inner wall of the connecting shell according to the information, control the driving end of the hydraulic rod two to extend and retract, drive the adjusting disc to rotate around the rotating shaft through the connecting shaft, and further drive the connecting rod two, the hydraulic rod three and the polishing roller to adjust the inclination angle synchronously until the curved surface of the polishing roller is adapted to the inclined edge of the preformed hole;

[0019] S4: start the hydraulic rod three, control the driving end to extend, drive the polishing roller to approach the inclined edge of the preformed hole, and use the curved surface of the polishing roller to preliminarily polish the inclined groove and the outer edge contour, if a special angle circular groove or a position where the polishing roller is difficult to enter is encountered, start the micro electric telescopic rod in the driving end of the hydraulic rod three, control the driving end of the micro electric telescopic rod to extend, drive the rack to slide along the polishing roller, drive the water droplet-shaped boring cutter to rotate and extend around the mounting groove through the meshing transmission of the rack and the gear, adjust the boring cutter to the adaptive angle, and then polish the special position;

[0020] S5: after the polishing of the single side or both sides of the preformed hole is completed, the driving motor, the micro electric telescopic rod, the hydraulic rod two and the hydraulic rod three are turned off in turn, the parts are controlled to reset, the electric sliding rail is started to drive the boring assembly away from the forged piece, the self-locking state of the self-centering six-jaw chuck is released, the forged piece is taken out to detect the polishing accuracy of the preformed hole, and if other preformed holes need to be polished, steps S2-S4 are repeated.

[0021] Technical effects and advantages of the present application:

[0022] In the application, the outer side damping buffer ring of the hydraulic rod one of the boring assembly is closely attached to the connecting rod one and transmitted by the buffer rod to absorb the rotating vibration and avoid the deviation of the tool head, thereby ensuring the polishing precision; after the laser displacement sensor accurately positions the prefabricated hole position, the driving motor drives the connecting shell, the adjusting disc and the connecting rod two to rotate at high frequency, simultaneously drives the conical polishing roller one at the lower end of the hydraulic rod three shell to rotate, and drives the conical polishing roller two symmetrically distributed on both sides of the prefabricated hole through the slider connected by the arc-shaped connecting rod one, the extension column and the arc-shaped connecting rod two; after the hydraulic rod three is inserted into the conical polishing roller two, the micro electric telescopic rod drives the rack to mesh with the gear, so that the water drop-shaped boring cutter is extended and clamped in the clamping groove of the conical polishing roller two, realizing the synchronous rotation of the two polishing rollers in the hourglass shape, completing the synchronous polishing of the edges on both sides of the prefabricated hole without turning the forged piece, solving the problem of inconsistent progress on both sides and secondary finishing, and capturing the inclination information of the prefabricated hole by the inclination sensor on the fixed frame; the hydraulic rod two drives the adjusting disc to rotate around the rotating shaft through the connecting shaft, drives the connecting rod two, the hydraulic rod three and the polishing roller to adjust the inclination angle, and adjusts the boring cutter angle through the micro electric telescopic rod, so that the boring cutter can be deeply inserted into the special angle circular groove without replacing the boring head, thereby greatly improving the processing efficiency and adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0023] The disclosure of the application will be described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes, and are not intended to limit the scope of protection of the application. In the drawings, the same reference signs are used to refer to the same parts:

[0024] Figure 1 Process flowchart of the application

[0025] Figure 2 Internal structure diagram of the machining lathe of the application

[0026] Figure 3 Overall structure diagram of the boring assembly of the application

[0027] Figure 4 Overall internal structure diagram of the hydraulic rod one of the application

[0028] Figure 5 Outer side structure diagram of the connecting rod one of the application

[0029] Figure 6 Internal structure diagram of the outer side of the connecting rod one of the application

[0030] Figure 7 Internal structure diagram of the conical polishing roller two of the application

[0031] Figure 8 Internal structure diagram of the boring mechanism of the application

[0032] Figure 9 It is the internal part structure explosion schematic diagram of the boring mechanism of the application;

[0033] Figure 10 It is the internal part structure schematic diagram of the boring mechanism of the application;

[0034] Figure 11 It is the three-plane structure schematic diagram of the hydraulic rod of the application;

[0035] Figure 12 It is the enlarged structure schematic diagram of the figure A of the application.

[0036] Legend: 1, machining lathe; 11, electric sliding rail; 2, forged piece; 3, boring assembly; 31, hydraulic rod one; 32, connecting rod one; 321, arc-shaped connecting rod one; 322, extension column; 323, arc-shaped connecting rod two; 324, sliding block; 325, conical polishing roller two; 3251, clamping groove; 33, damping buffer ring; 331, buffer rod; 34, boring mechanism; 341, driving motor; 342, connecting shell; 343, rotating shaft; 344, connecting rod two; 345, fixed frame; 3451, inclination sensor; 346, hydraulic rod two; 3461, connecting shaft; 347, adjusting disc; 348, hydraulic rod three; 3481, conical polishing roller one; 3482, polishing roller; 3483, boring cutter; 3484, miniature electric telescopic rod; 3485, rack; 3486, accommodating groove; 3487, gear. DETAILED DESCRIPTION

[0037] It is easy to understand that according to the technical scheme of the application, a person skilled in the art can propose a plurality of structure modes and implementation modes which can be replaced with each other without changing the essential spirit of the application. Therefore, the following specific embodiments and drawings are only exemplary description of the technical scheme of the application, and should not be regarded as the whole or regarded as the limitation or restriction of the technical scheme of the application.

[0038] REFERENCE Figure 2As shown, the present application provides a technical solution: based on the boring process and device for automobile forging part machining, including processing lathe 1, the inside of processing lathe 1 is provided with electric sliding rail 11, the lower end of electric sliding rail 11 is fixedly installed with boring assembly 3, the inside lower end of processing lathe 1 is fixedly provided with forging part 2 through mechanical chuck, the model of mechanical chuck is self-centering six-jaw chuck K12-200, when the device is used, the forging part 2 is placed into the inside of processing lathe 1 and fixed through mechanical chuck, at the same time, the lower end of mechanical chuck is controlled to rotate in self-locking mode through motor, when the prefabricated hole and edge fillet on the upper end of forging part 2 need to be finely polished, the position of boring assembly 3 is adjusted through electric sliding rail 11, boring assembly 3 is lowered when aligning the prefabricated hole position, and the forging part 2 is finely polished, at the same time, different prefabricated holes on the forging part 2 are polished in sequence through the cooperation of mechanical chuck and electric sliding rail 11, so that the fine degree of forging part 2 is improved.

[0039] Referring to Figures 2-4 As shown, in the embodiment: boring assembly 3 includes hydraulic rod one 31, the driving end of hydraulic rod one 31 is fixedly installed with connecting rod one 32, a plurality of damping buffer rings 33 are arranged on the outer side of hydraulic rod one 31, the damping buffer ring 33 is closely attached to the connecting rod one 32, the damping buffer ring 33 is fixedly connected with the outer wall of hydraulic rod one 31 through buffer rod 331, when the assembly starts to rotate, the rotating speed changes or stops rotating, radial and axial vibrations are easily generated due to the sudden change of motion state, the radial vibration may cause the boring tool bit to deviate, affecting the hole machining precision, the axial vibration may aggravate the friction between parts, shortening the service life of the equipment, at this time, the plurality of damping buffer rings 33 on the outer side of hydraulic rod one 31 are closely attached to the connecting rod one 32, forming a surrounding contact structure, which can directly contact and absorb the vibration energy of connecting rod one 32 during rotation, at the same time, the damping buffer ring 33 is fixed with the outer wall of hydraulic rod one 31 through buffer rod 331, buffer rod 331 can further transmit the vibration absorbed by damping buffer ring 33 to the outer wall of hydraulic rod one 31, and disperse the vibration through the rigid structure of hydraulic rod itself, avoiding the vibration concentrated in the connecting position of connecting rod one 32 and boring tool bit.

[0040] Referring to Figures 2-4 , Figures 8-9As shown, in the embodiment: the outer side of the connecting rod one 32 is provided with a plurality of groups of laser displacement sensors for positioning the position of the prefabricated hole, the specific model of the laser displacement sensor is LK-G5001, the lower end of the inner side of the connecting rod one 32 is rotatably installed with a boring mechanism 34, the boring mechanism 34 includes a driving motor 341, the shell of the driving motor 341 is fixedly connected with the connecting rod one 32, the driving end of the driving motor 341 is fixedly installed with a connecting shell 342, the connecting shell 342 is rotatably connected with the connecting rod one 32, the lower end of the connecting shell 342 is movably provided with a rotating shaft 343, the inner side of the connecting shell 342 is fixedly installed with a fixing frame 345, the inner side of the fixing frame 345 is rotatably installed with an adjusting disc 347, the lower end of the adjusting disc 347 is fixedly installed with a connecting rod two 344, the inner wall upper end of the connecting shell 342 is fixedly installed with a hydraulic rod two 346, the driving end of the hydraulic rod two 346 is rotatably installed with a connecting shaft 3461, the connecting shaft 3461 is fixedly connected with the eccentric position of the upper end of the adjusting disc 347, the connecting shaft 3461 is fixedly connected with the adjusting disc 347, when it is needed to polish the prefabricated hole, the connecting rod one 32 is driven to move downward by the driving hydraulic rod one 31, when the connecting rod one 32 moves to the specified position, the driving motor 341 is started to drive the whole connecting shell 342 to rotate at high frequency, thereby driving the connecting rod two 344 and the lower end structure thereof to rotate at high frequency, and the peripheral edge contour of the prefabricated hole is polished.

[0041] Referring to Figures 8-9 As shown, in the embodiment: the upper end of the fixing frame 345 is fixedly installed with an inclination sensor 3451, the specific model of the inclination sensor 3451 is ZTIS302-10.

[0042] Referring to Figures 8-12As shown, in the embodiment: the lower end of the connecting rod two 344 is internally fixedly installed with a hydraulic rod three 348, the shell of the hydraulic rod three 348 is fixedly connected with the connecting rod two 344, the driving end of the hydraulic rod three 348 is fixedly installed with a polishing roller 3482, the outer side of the polishing roller 3482 is composed of a curved surface and a plane, a placement groove 3486 is opened on the plane of the polishing roller 3482, a boring cutter 3483 is rotatably installed in the placement groove 3486, the boring cutter 3483 is in the shape of a water drop, a gear 3487 is fixedly installed on one side of the boring cutter 3483, the gear 3487 is located in the inside of the polishing roller 3482 and is rotatably connected therewith, a miniature electric telescopic rod 3484 is arranged in the driving end of the hydraulic rod three 348, the driving end of the miniature electric telescopic rod 3484 penetrates through the hydraulic rod three 348 and the polishing roller 3482 and is fixedly installed with a rack 3485, the rack 3485 is slidably connected with the polishing roller 3482, the rack 3485 is engaged with the gear 3487, when it is necessary to polish the outer side edge profile of the prefabricated hole, the driving motor 341 is started to rotate to drive the connecting rod two 344, the hydraulic rod three 348 and the conical polishing roller one 3481 at the lower end thereof to rotate, the position of the conical polishing roller one 3481 is continuously moved up and down to carefully polish the outer side edge profile of the prefabricated hole, when it is necessary to polish the special bevel angle or the outer side edge profile of the prefabricated hole with an inclined edge, the polishing roller 3482 is extended by starting the hydraulic rod three 348, the information is captured by the inclination sensor 3451, the adjusting disc 347 is gradually pressed downward by the hydraulic rod two 346 to rotate along the rotating shaft 343, so that the inclination angle of the adjusting disc 347 and the connecting rod two 344 and the hydraulic rod three 348 at the lower end thereof are all rotated, at this time, the curved surface of the polishing roller 3482 can preliminarily polish the outer side edge profile of the prefabricated hole, when it is necessary to polish some special angle circular grooves, such as the 30° inclined circular corner of the prefabricated hole edge of the automobile drive axle housing, the 45° transition circular corner of the engine cylinder block, the 60° inclined hole edge of the steering knuckle, the synchronous machining of the 90° right angle groove and the 120° arc transition edge, or the position difficult to be polished by the polishing roller 3482, the rack 3485 is moved downward by starting the miniature electric telescopic rod 3484 to drive the gear 3487 to rotate, thereby driving the boring cutter 3483 to extend, the rotation angle of the boring cutter 3483 is adjusted to adapt to the prefabricated holes of different angles, at the same time, when it is necessary to polish the prefabricated holes on both sides and inside of the forged piece 2, the extension and angle change of the polishing roller 3482 and the boring and polishing of the boring cutter 3483 can be realized, the problem that the boring head needs to be continuously replaced and the forged piece 2 needs to be rotated to change the boring angle when the traditional boring equipment polishes the prefabricated holes of different angles is solved, and the processing convenience and efficiency are greatly improved.

[0043] Reference Figures 2-6As shown, in the embodiment: the outer side of the connecting rod one 32 is fixedly installed with an arc-shaped connecting rod one 321, the lower end of the arc-shaped connecting rod one 321 is slidably provided with an extension column 322, the lower end of the extension column 322 is slidably installed with an arc-shaped connecting rod two 323, the lower end of the arc-shaped connecting rod two 323 is fixedly installed with a sliding block 324, the sliding block 324 is slidably connected with the lathe 1, the inside of the sliding block 324 is slidably installed with a conical polishing roller two 325, and the conical polishing roller two 325 has the same diameter as the conical polishing roller one 3481.

[0044] Referring to Figures 5-6 As shown, in the embodiment: the outer side of the connecting rod one 32 is fixedly installed with an arc-shaped connecting rod one 321, the lower end of the arc-shaped connecting rod one 321 is slidably provided with an extension column 322, the lower end of the extension column 322 is slidably installed with an arc-shaped connecting rod two 323, the lower end of the arc-shaped connecting rod two 323 is fixedly installed with a sliding block 324, the sliding block 324 is slidably connected with the lathe 1, the inside of the sliding block 324 is slidably installed with a conical polishing roller two 325, and the conical polishing roller two 325 has the same diameter as the conical polishing roller one 3481.

[0045] Referring to Figures 4-12 As shown, in the embodiment: the inside of the conical polishing roller two 325 is provided with a plurality of clamping grooves 3251, the width of the clamping grooves 3251 is the same as the width of the boring cutter 3483, when it is necessary to polish the edge round corner position of the two ends of the prefabricated hole on the forged piece 2, the conventional prior art needs to polish the edge round corner of one side of the round hole of the forged piece 2, then turn over the forged piece 2, and polish the edge round corner of the other side of the round hole, which greatly reduces the working efficiency of the device, when polishing the outside edge round corner of the horizontal edge round corner of the round hole, the device is lowered by moving the connecting rod one 32, when the conical polishing roller one 3481 approaches the edge round corner of the round hole, the hydraulic rod three 348 is extended, the hydraulic rod three 348 is inserted into the conical polishing roller two 325, the boring cutter 3483 is extended by driving the miniature electric telescopic rod 3484 to drive the rack 3485 to move downward, the boring cutter 3483 is adjusted to rotate at an angle to be clamped with the clamping grooves 3251, after the clamping is completed, the driving motor 341 is started to rotate and the connecting rod one 32 is slightly moved up and down to make the conical polishing roller two 325 and the conical polishing roller one 3481 rotate in a sandglass shape, and the upper and lower horizontal edge round corners of the round hole are fully polished, the boring time of the forged piece 2 on both sides is reduced, and the working efficiency of the device is improved.

[0046] In order to further better explain the above-mentioned embodiments, the application also provides an embodiment of a boring process and device for processing automobile forged pieces, referring to Figure 1 As shown, comprising the following steps:

[0047] Step S1: the automobile forging parts 2 to be processed are placed into the lower end of the processing lathe 1, the forging parts 2 are clamped and fixed by the self-centering six-jaw chuck, the lower end motor of the chuck is started, the chuck enters the self-locking rotating state, the displacement of the forging parts 2 in the processing process is ensured, the electric sliding rail 11 in the processing lathe 1 is started, the boring assembly 3 is driven to move horizontally by the electric sliding rail 11, and the laser displacement sensor outside the connecting rod one 32 is started at the same time, the center and the edge position of the preformed hole on the forging parts 2 are detected and positioned by the laser displacement sensor, after positioning is completed, the electric sliding rail 11 drives the boring assembly 3 to move to the upper side of the preformed hole;

[0048] Step S2: the hydraulic rod one 31 in the boring assembly 3 is started, the driving end of the hydraulic rod one 31 is controlled to stretch out, the connecting rod one 32 and the boring mechanism 34 at the lower end are driven to move downward synchronously, until the conical polishing roller one 3481 approaches the outer edge of the preformed hole, the stretching action of the hydraulic rod one 31 is stopped, the driving motor 341 in the boring mechanism 34 is started, the driving motor 341 drives the connecting shell 342, the adjusting disc 347, the connecting rod two 344 and the hydraulic rod three 348 to rotate synchronously at high frequency, and then drives the conical polishing roller one 3481 to rotate; at the same time, the hydraulic rod one 31 is controlled to stretch out and contract slightly, the conical polishing roller one 3481 is driven to move up and down, the outer edge profile of the preformed hole is polished regularly and carefully, and in the polishing process, the damping buffer ring 33 outside the hydraulic rod one 31 is tightly attached to the connecting rod one 32, absorbs and disperses the vibration generated by rotation;

[0049] Step S3: when the preformed hole has a special inclined angle or inclined edge, the inclination sensor 3451 at the upper end of the fixed frame 345 is started, the inclination information of the preformed hole is captured by the inclination sensor 3451, the hydraulic rod two 346 in the inner wall of the connecting shell 342 is started according to the information, the driving end of the hydraulic rod two 346 is controlled to stretch out and contract, the adjusting disc 347 is pushed to rotate around the rotating shaft 343 through the connecting shaft 3461, and then the connecting rod two 344, the hydraulic rod three 348 and the polishing roller 3482 are synchronously adjusted in inclination, until the curved surface of the polishing roller 3482 is adapted to the inclined edge of the preformed hole;

[0050] Step S4: the hydraulic rod three 348 is started, the driving end thereof is controlled to stretch out, the polishing roller 3482 is driven to approach the inclined edge of the preformed hole, the curved surface of the polishing roller 3482 is used to preliminarily polish the inclined groove and the outer edge profile, if a special angle circular groove or a position where the polishing roller 3482 is difficult to enter is encountered, the miniature electric telescopic rod 3484 in the driving end of the hydraulic rod three 348 is started, the driving end of the miniature electric telescopic rod 3484 is controlled to stretch out, the rack 3485 is driven to slide along the polishing roller 3482, the gear 3487 is engaged and driven through the rack 3485, the water droplet-shaped boring cutter 3483 is driven to rotate and stretch out around the installation groove 3486, after the boring cutter 3483 is adjusted to the adaptive angle, the special position is bored and polished;

[0051] Step S5: after the edges of the preformed hole on one side or both sides are polished, the driving motor 341, the micro electric telescopic rod 3484, the hydraulic rod two 346 and the hydraulic rod three 348 are closed in turn, the components are reset, the electric sliding rail 11 is started to drive the boring assembly 3 away from the forged part 2, the self-locking state of the self-centering six-jaw chuck is released, the forged part 2 is taken out to detect the polishing accuracy of the preformed hole, and if other preformed holes need to be polished, steps S2-S4 are repeated.

[0052] The technical scope of the present application is not limited to the above description, and those skilled in the art can make various modifications and changes to the above embodiments without departing from the technical idea of the present application, and these modifications and changes should all belong to the protection scope of the present application.

Claims

1. A processing apparatus for automotive forgings, characterized in that, The lathe includes a machining lathe (1), which is equipped with an electric slide rail (11) and a boring assembly (3) is fixedly installed at the lower end of the electric slide rail (11). A forging (2) is fixedly installed at the lower end of the machining lathe (1) by a mechanical chuck. The boring assembly (3) includes a hydraulic rod (31), a connecting rod (32) is fixedly installed at the drive end of the hydraulic rod (31), and a boring mechanism (34) is rotatably installed at the lower end of the connecting rod (32); The boring mechanism (34) includes a drive motor (341), the housing of the drive motor (341) is fixedly connected to the first connecting rod (32), the drive end of the drive motor (341) is fixedly mounted with a connecting shell (342), the connecting shell (342) is rotatably connected to the first connecting rod (32), the lower end of the connecting shell (342) is movably provided with a rotating shaft (343), the inside of the connecting shell (342) is fixedly mounted with a fixing frame (345), the inside of the fixing frame (345) is rotatably mounted with an adjusting plate (347), the lower end of the adjusting plate (347) is fixedly mounted with a second connecting rod (344), the upper end of the inner wall of the connecting shell (342) is fixedly mounted with a second hydraulic rod (346), the drive end of the second hydraulic rod (346) is rotatably mounted with a connecting shaft (3461), and the connecting shaft (3461) is fixedly connected to the adjusting plate (347); A hydraulic rod three (348) is fixedly installed inside the lower end of the connecting rod two (344). A grinding roller (3482) is fixedly installed on the driving end of the hydraulic rod three (348). A mounting groove (3486) is provided on the grinding roller (3482). A boring bar (3483) is rotatably installed inside the mounting groove (3486). A gear (3487) is fixedly installed on one side of the boring bar (3483). The gear (3487) is located on the grinding roller (3482). 482) is internal and rotatably connected to it. The driving end of the hydraulic rod three (348) is provided with a miniature electric telescopic rod (3484). The driving end of the miniature electric telescopic rod (3484) passes through the hydraulic rod three (348) and the grinding roller (3482) and is fixedly installed with a rack (3485). The rack (3485) is slidably connected to the grinding roller (3482). The rack (3485) meshes with the gear (3487). A conical grinding roller (3481) is fixedly installed at the lower end of the outer shell of the hydraulic rod three (348). The conical grinding roller one (3481) is located outside the grinding roller (3482) and is slidably connected to it. An arc-shaped connecting rod one (321) is fixedly installed on the outer side of the connecting rod one (32). An extension column (322) is slidably provided at the lower end of the arc-shaped connecting rod one (321). An arc-shaped connecting rod two (323) is slidably installed at the lower end of the extension column (322). The lower end of the arc-shaped connecting rod two (323) is fixedly installed. A slider (324) is installed, which is slidably connected to the machining lathe (1). A conical grinding roller (325) is slidably installed inside the slider (324). Multiple sets of slots (3251) are opened inside the conical grinding roller (325). The width of the slot (3251) is the same as the width of the boring tool (3483). The boring tool (3483) can rotate and engage with the slot (3251) to achieve synchronous grinding of the two sides of the pre-made hole and to grind the rounded corners of the edge with an inclined angle.

2. The processing apparatus based on automotive forgings according to claim 1, characterized in that: Multiple sets of damping buffer rings (33) are provided on the outer side of the hydraulic rod (31). The damping buffer rings (33) are closely fitted with the connecting rod (32). The damping buffer rings (33) are fixedly connected to the outer wall of the hydraulic rod (31) through the buffer rod (331). At least two sets of damping buffer rings (33) are provided and are evenly distributed along the axial direction of the hydraulic rod (31) to absorb and disperse the vibration when the connecting rod (32) rotates, so as to avoid the vibration from concentrating at the connection between the connecting rod (32) and the boring mechanism (34).

3. The processing apparatus based on automotive forgings according to claim 2, characterized in that: A laser displacement sensor is provided on the outside of the connecting rod (32). At least two sets of laser displacement sensors are provided and are distributed circumferentially along the axis of the connecting rod. The detection end of the laser displacement sensor faces the pre-drilled hole of the forging (2) and is used to locate the center and edge position of the pre-drilled hole.

4. The processing apparatus based on automotive forgings according to claim 1, characterized in that: The second hydraulic rod (346) is arranged radially along the connecting shell (342). The connecting shaft (3461) is fixedly connected to the upper eccentric position of the adjusting plate (347). When the second hydraulic rod (346) extends or retracts, it can drive the adjusting plate (347) to rotate around the rotating shaft (343), thereby adjusting the tilt angle of the second connecting rod (344) and the third hydraulic rod (348).

5. The processing apparatus based on automotive forgings according to claim 1, characterized in that: An inclination sensor (3451) is fixedly installed on the upper end of the fixing frame (345). The inclination sensor (3451) is attached to the upper surface of the fixing frame (345). The detection axis of the inclination sensor (3451) is parallel to the axis of the adjustment disk (347) and is used to capture the tilt angle information of the adjustment disk (347).

6. The processing apparatus based on automotive forgings according to claim 4, characterized in that: The outer side of the grinding roller (3482) is composed of an arc surface and a plane. The grinding roller (3482) is coaxially fixed with the driving end of the hydraulic rod three (348). The mounting groove (3486) is opened along the axial direction of the grinding roller (3482).

7. The processing apparatus based on automotive forgings according to claim 1, characterized in that: The conical grinding roller (3481) has a hollow conical structure. Its large-diameter end is fixedly connected to the lower end of the outer shell of the hydraulic rod (348), and its small-diameter end faces away from the hydraulic rod (348). The inner wall of the conical grinding roller (3481) slides against the outer wall of the grinding roller (3482).

8. The processing apparatus based on automotive forgings according to claim 1, characterized in that: The slots (3251) are evenly distributed along the axial direction of the second conical grinding roller (325). After the boring tool (3483) engages with the slots (3251), it can drive the second conical grinding roller (325) to rotate synchronously.

9. The processing apparatus based on automotive forgings according to claim 7, characterized in that: The first conical grinding roller (3481) and the second conical grinding roller (325) have the same diameter. When the drive motor (341) drives and the first connecting rod (32) moves up and down slightly, the first conical grinding roller (3481) and the second conical grinding roller (325) rotate synchronously in an hourglass shape to fully grind the rounded corners at both ends of the pre-made hole.

10. A boring process for machining automotive forgings, characterized in that, The process, implemented using the machining apparatus for automotive forgings as described in any one of claims 1-9, includes the following steps: S1: Place the automotive forging (2) to be processed into the lower end of the machining lathe (1), clamp and fix the forging (2) with a self-centering six-jaw chuck, start the motor at the lower end of the chuck to make the chuck enter the self-locking rotation state, and ensure that the forging (2) has no displacement during the processing. Start the electric slide rail (11) inside the machining lathe (1), and drive the boring assembly (3) to move horizontally through the electric slide rail (11). At the same time, start the laser displacement sensor on the outside of the connecting rod (32), and use the laser displacement sensor to detect and position the center and edge position of the pre-drilled hole on the forging (2). After the positioning is completed, control the electric slide rail (11) to drive the boring assembly (3) to move to the top of the pre-drilled hole. S2: Start the hydraulic rod 1 (31) in the boring assembly (3), control the drive end of the hydraulic rod 1 (31) to extend, drive the connecting rod 1 (32) and the lower boring mechanism (34) to move down synchronously until the conical grinding roller 1 (3481) approaches the outer edge of the pre-drilled hole, stop the extension action of the hydraulic rod 1 (31), start the drive motor (341) in the boring mechanism (34), and drive the connecting shell (342) and the adjusting plate (347) to move down. The connecting rod 2 (344) and the hydraulic rod 3 (348) rotate synchronously at high frequency, thereby driving the conical grinding roller 1 (3481) to rotate; at the same time, the hydraulic rod 1 (31) is controlled to extend and retract slightly, driving the conical grinding roller 1 (3481) to move up and down, and to perform conventional and detailed grinding on the outer edge contour of the pre-made hole. During the grinding process, the damping buffer ring (33) on the outside of the hydraulic rod 1 (31) absorbs and disperses the vibration generated by the rotation through close contact with the connecting rod 1 (32); S3: When the pre-made hole has a special oblique angle or tilted edge, the tilt sensor (3451) at the upper end of the fixing frame (345) is activated. The tilt sensor (3451) captures the tilt angle information of the pre-made hole. Based on this information, the hydraulic rod two (346) at the upper end of the inner wall of the connecting shell (342) is activated. The drive end of the hydraulic rod two (346) is controlled to extend and retract. The adjusting plate (347) is pushed to rotate around the rotating shaft (343) through the connecting shaft (3461). This drives the connecting rod two (344), the hydraulic rod three (348) and the grinding roller (3482) to adjust the tilt angle synchronously until the arc surface of the grinding roller (3482) matches the tilted edge of the pre-made hole. S4: Start the hydraulic rod three (348), control its drive end to extend, drive the grinding roller (3482) to approach the inclined edge of the pre-made hole, use the arc surface of the grinding roller (3482) to perform preliminary grinding on the inclined groove and the outer edge contour. If a special angle groove or a position where the grinding roller (3482) cannot penetrate is encountered, start the micro electric telescopic rod (3484) inside the drive end of the hydraulic rod three (348), control the drive end of the micro electric telescopic rod (3484) to extend, drive the rack (3485) to slide along the grinding roller (3482), and drive the teardrop-shaped boring tool (3483) to rotate and extend around the mounting groove (3486) through the meshing transmission of the rack (3485) and the gear (3487). After adjusting the boring tool (3483) to the appropriate angle, perform boring and grinding on the special position. S5: After the pre-drilled hole is ground on one or both sides, turn off the drive motor (341), micro electric telescopic rod (3484), hydraulic rod two (346) and hydraulic rod three (348) in sequence, control each component to reset, start the electric slide rail (11) to drive the boring assembly (3) away from the forging (2), release the self-locking state of the self-centering six-jaw chuck, take out the forging (2) and check the grinding accuracy of the pre-drilled hole. If other pre-drilled holes need to be ground, repeat S2-S4.

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