A punching device for processing automobile brake discs

Abstract

The present invention relates to the technical field of punching devices, and specifically relates to a punching device for processing automotive brake discs, which includes a workbench. The upper end of the workbench is fixedly connected with an installation bracket, and a cylinder is installed at the upper end of the installation bracket. The output shaft of the cylinder penetrates through the installation bracket, and a positioning mechanism is installed on the output shaft of the cylinder. The positioning mechanism includes a first pressing rod, and a punching mechanism is arranged outside the first pressing rod. A placing pile is fixedly connected to the upper end of the workbench near the middle position, and a brake disc body is installed outside the placing pile. Through the mutual cooperation of the grinding piece and the fourth spring, the punching drill bit can chamfer the heat dissipation holes during punching, and clean the burrs on the edge and inner wall. Through the mutual cooperation of the first pressing rod and the limiting strip, the punching drill bit can accurately align with the ventilation groove for punching, effectively dissipating the heat from the inside of the brake disc and enhancing the heat dissipation performance.

Description

Technical Field

[0001] The present invention relates to the technical field of punching devices, and particularly to a punching device for machining automotive brake discs. Background Art

[0002] Disc brake discs are divided into solid discs (single-piece discs) and vented discs (double-piece discs). The vented discs have a ventilation function. They have many holes leading to the center of the circle on the circumference, which are called air ducts. When the vehicle is moving, air convection occurs through the air ducts to achieve the purpose of heat dissipation. Compared with solid discs, the heat dissipation effect is better. Most cars are front-wheel drive, and the front discs are used more frequently and have greater wear, so front vented discs are adopted.

[0003] The vibration generated during the punching of existing vented discs is likely to cause the heat dissipation holes to be skewed, thereby causing wear to the solid part of the vented disc by the drill bit. The overall strength of the brake pads may be affected to a certain extent, resulting in the brake pads being more likely to deform or be damaged when stressed. If the heat dissipation holes on the brake pads are unevenly distributed or the punching accuracy is not high, it may affect the dynamic balance of the brake disc, and further affect the driving safety. Burr defects may be generated during the punching process, and these defects will affect the friction performance and assembly accuracy of the brake pads. For this reason, we propose a punching device for machining automotive brake discs. Summary of the Invention

[0004] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art, the present invention proposes a punching device for machining automotive brake discs.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a punching device for machining automotive brake discs, including a workbench. The upper end of the workbench is fixedly connected with an installation bracket. The upper end of the installation bracket is provided with a cylinder. The output shaft of the cylinder penetrates the installation bracket. The output shaft of the cylinder is provided with a positioning mechanism. The positioning mechanism includes a first pressing rod. A punching mechanism is arranged outside the first pressing rod. A placing pile is fixedly connected to the upper end of the workbench near the middle. A brake disc main body is installed outside the placing pile. A plurality of groups of ventilation grooves are opened inside the brake disc main body.

[0006] Preferably, the positioning mechanism includes a first connecting plate fixedly connected to the output shaft of the cylinder. A first motor is installed at the lower end of the first connecting plate. A second connecting plate is fixedly connected to the position near the lower end of the outer shell of the first motor. The output shaft of the first motor penetrates the second connecting plate. The output shaft of the first motor is fixedly connected to a first pressing rod. Two groups of symmetrically arranged limiting strips are fixedly connected to the outside of the first pressing rod. A pressing plate is fixedly connected to the lower end of the first pressing rod. The outside of the pressing plate fits with the inner wall of the brake disc main body.

[0007] Preferably, an installation plate is fixedly connected to the inner side of the pressing plate. A plurality of first electric telescopic rods are installed on the inner side of the installation plate. The output shaft of the first electric telescopic rod is fixedly connected to a clamping block. The other end of the clamping block is designed with an arc surface. The outer side of the clamping block fits with the inner wall of the ventilation groove.

[0008] Preferably, an air distribution pipe is fixedly connected to the upper end of the installation plate. The input port of the air distribution pipe is connected to an air compressor through a trachea. The output ports of the air distribution pipe are fixedly connected to a plurality of telescopic air pipes. The outer sides of the telescopic air pipes penetrate through the clamping block, and the outer sides of the telescopic air pipes are fixedly connected to the clamping block.

[0009] Preferably, the punching mechanism includes a sliding block slidably connected to a first pressing rod. A first spring is arranged on the outer side of the first pressing rod at the upper end of the sliding block. One end of the first spring is fixedly connected to the first pressing rod, and the other end of the first spring is fixedly connected to the sliding block. Fixing rods are fixedly connected to the positions near both ends at the upper end of the sliding block. The upper ends of the fixing rods are fixedly connected to limiting blocks. An installation block is slidably connected to the outer sides of the limiting blocks. Second chutes are opened at the positions near the front and rear ends on the outer side of the installation block. L-shaped sliding plates are slidably connected to the inner sides of the second chutes. The mutually approaching ends of the two L-shaped sliding plates are fixedly connected to a fixing plate together. A second motor is installed on the upper end of the fixing plate. The output shaft of the second motor is fixedly connected to a connecting shaft. The lower end of the connecting shaft is fixedly connected to a punching drill bit. An isolation groove is opened at the upper end of the punching drill bit. The inner side of the punching drill bit below the isolation groove is designed with a hollow. A second spring is arranged on the outer side of the fixing rod. One end of the second spring is fixedly connected to the limiting block, and the other end of the second spring is fixedly connected to the installation block.

[0010] Preferably, first chutes are opened at the positions near the upper and lower ends on the outer side of the installation block. An oil tank is fixedly connected to the lower end of the fixing plate. The connecting shaft is rotatably connected to the inside of the oil tank. Vanes are fixedly connected to the outer side of the connecting shaft inside the oil tank through a sleeve.

[0011] Preferably, a second electric telescopic rod is installed on one side of the installation block. The output shaft of the second electric telescopic rod penetrates through the installation block, and the output shaft of the second electric telescopic rod is fixedly connected to the oil tank.

[0012] Preferably, an isolation sleeve is slidably connected to the outer side of the connecting shaft. A third chute is opened on the inner wall of the isolation sleeve. The third chute is designed with a slope height difference. A first sliding rod is slidably connected to the inner side of the third chute. One end of the first sliding rod fits with the inner wall of the third chute, and the other end of the first sliding rod is fixedly connected to the connecting shaft.

[0013] Preferably, the outer side of the isolation sleeve near the lower end is slidably connected to the inner side of the isolation groove. The outer side of the isolation sleeve fits with the inner wall of the isolation groove. A plurality of output holes are provided inside the isolation groove. A plurality of oil delivery grooves are provided on the outer side of the punching drill bit. The output ports of the output holes are arranged inside the oil delivery grooves. A third spring is provided below the blades on the outer side of the connecting shaft. One end of the third spring is fixedly connected to the isolation sleeve, and the other end of the third spring is fixedly connected to the connecting shaft.

[0014] Preferably, a second sliding rod is fixedly connected to the inner side of the punching drill bit. A grinding piece is slidably connected to the outer side of the second sliding rod. A fourth spring is provided on the outer side of the second sliding rod. One end of the fourth spring is fixedly connected to the punching drill bit, and the other end of the fourth spring is fixedly connected to the grinding piece. The other side of the grinding piece is designed with an arc surface.

[0015] Compared with the prior art, the present invention provides a punching device for processing automotive brake discs, which has the following beneficial effects:

[0016] 1. Through the mutual cooperation of the grinding piece and the fourth spring, the punching drill bit can chamfer the heat dissipation holes during punching, clean the burrs on the edge and inner wall, prevent these impurities from affecting the performance and safety of the brake pads. Chamfering the edges of the heat dissipation holes can reduce the risk of cracking or breaking of the brake pads caused by stress concentration during use. Through the mutual cooperation of the first pressing rod and the limiting strip, the first motor drives the sliding block to align with the ventilation groove below, so that the punching drill bit accurately aligns with the ventilation groove for punching. The heat dissipation holes are connected to the ventilation groove, which can more effectively dissipate the heat from the inside of the brake disc, further enhancing the heat dissipation performance, ensuring that the brake disc can dissipate heat evenly during braking, and helping to improve the stability and braking performance of the brake disc.

[0017] 2. Through the mutual cooperation of the first electric telescopic rod and the pressing plate, the clamping block can be clamped to the ventilation groove, so that the position of the brake disc body can always remain stable during punching, avoiding the deviation of the heat dissipation holes and damaging the solid part of the brake disc body, avoiding reducing the strength and stability of the brake disc, and reducing the risk of fracture. Through the mutual cooperation of the clamping block and the telescopic air pipe, when the brake disc body is punched, the airflow impacts the inside of the ventilation groove, clears the internal debris, and uses the airflow to cool the punching drill bit to improve the service life of the punching drill bit. By pushing the fuel tank to slide in the first sliding groove by the second electric telescopic rod, the position of the next heat dissipation hole can be accurately calibrated above the ventilation groove, avoiding the deviation of the punching drill bit and the misalignment of the heat dissipation holes, and keeping the punching position stable.

[0018] 3. Through the mutual cooperation of the first sliding rod and the third sliding groove, the lubricating oil is output outward through the output hole, and the punching drill bit is gradually lubricated by the lubricating oil through the oil delivery groove to form a lubricating film, thereby significantly reducing the friction and resistance between the punching drill bit and the brake disc body, reducing the high temperature generated during cutting, avoiding overheating deformation, wear or even fracture of the punching drill bit. By reducing friction and heat, the lubricating oil helps to protect the drill bit, extend its service life, reduce the cost of replacement and maintenance, and can also make the punching drill bit more stable during cutting through the lubrication effect, reducing errors caused by friction and vibration, improving the machining accuracy. Due to the reduction of friction, the resistance of the drill bit during cutting is reduced, making the working speed faster and the efficiency higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a schematic diagram of the overall structure of a punching device for machining an automotive brake disc proposed by the present invention;

[0020] Figure 2 FIG. is a schematic diagram of the positioning mechanism of a punching device for machining an automotive brake disc proposed by the present invention;

[0021] Figure 3 FIG. is a partial structural cross-sectional view of the positioning mechanism of a punching device for machining an automotive brake disc proposed by the present invention;

[0022] Figure 4 FIG. is a schematic diagram of the punching mechanism of a punching device for machining an automotive brake disc proposed by the present invention;

[0023] Figure 5 FIG. is a partial structural schematic diagram of the punching mechanism of a punching device for machining an automotive brake disc proposed by the present invention Figure 1 ;

[0024] Figure 6 FIG. is a punching device for machining an automotive brake disc proposed by the present invention Figure 5 Schematic enlarged view of part A in;

[0025] Figure 7 FIG. is a partial structural schematic diagram of the punching mechanism of a punching device for machining an automotive brake disc proposed by the present invention Figure 2 ;

[0026] Figure 8 FIG. is a schematic cross-sectional view of the brake disc body of a punching device for machining an automotive brake disc proposed by the present invention.

[0027] In the figure: 1, workbench; 2, mounting bracket; 3, cylinder; 4, positioning mechanism; 41, first connecting plate; 42, first motor; 43, second connecting plate; 44, first pressing rod; 45, pressing plate; 46, limiting strip; 47, mounting plate; 48, first electric telescopic rod; 49, clamping block; 410, telescopic air pipe; 411, branch air pipe; 5, punching mechanism; 51, sliding block; 52, first spring; 53, fixed rod; 54, limiting block; 55, second spring; 56, mounting block; 57, first chute; 58, second chute; 59, L-shaped sliding plate; 510, second motor; 511, connecting shaft; 512, fixing plate; 513, punching drill bit; 514, fuel tank; 515, blade; 516, oil delivery groove; 517, second electric telescopic rod; 518, isolation sleeve; 519, third chute; 520, first sliding rod; 521, isolation groove; 522, output hole; 523, third spring; 524, second sliding rod; 525, grinding disc; 526, fourth spring; 6, placing pile; 7, brake disc body; 8, ventilation groove. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] Please refer to Figure 1 - Figure 8 , an automobile brake disc processing punching device, including a workbench 1, a mounting bracket 2 is fixedly connected to the upper end of the workbench 1, a cylinder 3 is installed at the upper end of the mounting bracket 2, the output shaft of the cylinder 3 penetrates through the mounting bracket 2, the output shaft of the cylinder 3 is installed with a positioning mechanism 4, the positioning mechanism 4 includes a first pressing rod 44, and a punching mechanism 5 is arranged outside the first pressing rod 44. A placing pile 6 is fixedly connected to the upper end of the workbench 1 near the middle, a brake disc body 7 is installed outside the placing pile 6, and a plurality of groups of ventilation grooves 8 are opened inside the brake disc body 7.

[0030] In this embodiment, the positioning mechanism 4 includes a first connecting plate 41 fixedly connected to the output shaft of the cylinder 3. A first motor 42 is installed at the lower end of the first connecting plate 41. A second connecting plate 43 is fixedly connected to a position near the lower end of the outer shell of the first motor 42. The output shaft of the first motor 42 penetrates through the second connecting plate 43. The output shaft of the first motor 42 is fixedly connected to a first pressing rod 44. Two groups of symmetrically arranged limiting strips 46 are fixedly connected to the outside of the first pressing rod 44. A pressing plate 45 is fixedly connected to the lower end of the first pressing rod 44, and the outside of the pressing plate 45 fits with the inner wall of the brake disc body 7.

[0031] Specifically, the first connecting plate 41 and the second connecting plate 43 protect the first motor 42 from the direct pressure of the cylinder 3, which may damage the first motor 42. The first motor 42 provides kinetic energy for the rotation of the punching mechanism 5. When the limiting strip 46 enables the sliding block 51 to slide up and down outside the first pressing rod 44, the sliding block 51 can also be driven by the output shaft of the first motor 42 to rotate. The pressing plate 45 protects the internal first electric telescopic rod 48 and cooperates with the first electric telescopic rod 48 to limit the position of the brake disc body 7 to prevent shaking during punching.

[0032] In this embodiment, an installation plate 47 is fixedly connected to the inner side of the pressing plate 45. A plurality of first electric telescopic rods 48 are installed on the inner side of the installation plate 47. The output shaft of the first electric telescopic rod 48 is fixedly connected to a clamping block 49. The other end of the clamping block 49 is designed with an arc surface, and the outer side of the clamping block 49 fits with the inner wall of the ventilation groove 8.

[0033] Specifically, the installation plate 47 provides an installation space for the first electric telescopic rod 48, and the ventilation groove 8 is clamped by the clamping block 49, so that the brake disc body 7 always maintains a fixed position, preventing punching misalignment caused by shaking.

[0034] In this embodiment, a sub-air pipe 411 is fixedly connected to the upper end of the installation plate 47. The input port of the sub-air pipe 411 is connected to an air compressor through a trachea. The output ports of the sub-air pipe 411 are fixedly connected to a plurality of telescopic air pipes 410. The outer sides of the telescopic air pipes 410 penetrate through the clamping block 49, and the outer sides of the telescopic air pipes 410 are fixedly connected to the clamping block 49.

[0035] Specifically, the sub-air pipe 411 diverts the compressed gas into the telescopic air pipes 410, and then outputs it into the ventilation groove 8 through the telescopic air pipes 410. It can clean the debris generated by punching in the ventilation groove 8 and can also dissipate heat from the punching drill bit 513.

[0036] In this embodiment, the punching mechanism 5 includes a sliding block 51 slidably connected to the first pressing rod 44. A first spring 52 is arranged outside the first pressing rod 44 at the upper end of the sliding block 51. One end of the first spring 52 is fixedly connected to the first pressing rod 44, and the other end of the first spring 52 is fixedly connected to the sliding block 51. Fixed rods 53 are fixedly connected to both positions near the two ends at the upper end of the sliding block 51. A limiting block 54 is fixedly connected to the upper end of the fixed rod 53. An installation block 56 is slidably connected to the outside of the limiting block 54. Second chutes 58 are formed at both positions near the front and rear ends on the outside of the installation block 56. An L-shaped sliding plate 59 is slidably connected to the inside of the second chute 58. The two L-shaped sliding plates 59 are fixedly connected to a fixing plate 512 at the ends close to each other. A second motor 510 is installed at the upper end of the fixing plate 512. A connecting shaft 511 is fixedly connected to the output shaft of the second motor 510. A punching drill bit 513 is fixedly connected to the lower end of the connecting shaft 511. An isolation groove 521 is formed at the upper end of the punching drill bit 513. The inside of the punching drill bit 513 below the isolation groove 521 is designed with a hollow. A second spring 55 is arranged outside the fixed rod 53. One end of the second spring 55 is fixedly connected to the limiting block 54, and the other end of the second spring 55 is fixedly connected to the installation block 56.

[0037] Specifically, when the first pressing rod 44 moves downward, the sliding block 51 is driven to move downward by the tension of the first spring 52. When the pressing plate 45 gradually approaches the placing pile 6, the sliding block 51 will contact the upper end of the brake disc body 7 in advance. When the first pressing rod 44 continues to move downward, the sliding block 51 presses the first spring 52 upward, so that the punching drill bit 513 presses against the upper end of the brake disc body 7 with the cooperation of the tension of the first spring 52. Then, the installation block 56 slides upward on the outside of the fixed rod 53 and cooperates with the limiting block 54 to press the second spring 55. The tension of the second spring 55 makes the punching drill bit 513 fit more tightly against the upper end of the brake disc body 7. The output shaft of the second motor 510 drives the connecting shaft 511 to rotate, and the connecting shaft 511 drives the punching drill bit 513 to rotate, so as to quickly punch the brake disc body 7. During punching, as the hole gradually deepens, the first spring 52 and the second spring 55 gradually expand, and the tension makes the punching drill bit 513 continuously move downward. The fixing plate 512 provides an installation space for the second motor 510, and the fixing plate 512 ensures the stability of the second motor 510 during movement through the cooperation with the two L-shaped sliding plates 59.

[0038] In this embodiment, first chutes 57 are formed at both positions near the upper and lower ends on the outside of the installation block 56. A fuel tank 514 is fixedly connected to the lower end of the fixing plate 512. The connecting shaft 511 is rotatably connected to the inside of the fuel tank 514. Vanes 515 are fixedly connected to the outside of the connecting shaft 511 inside the fuel tank 514 through sleeves.

[0039] Specifically, the first slide groove 57 provides an installation space for the oil tank 514 and limits the movement range of the oil tank 514. When the connecting shaft 511 rotates, it drives the blades 515 to stir the oil tank 514 to avoid the deposition of lubricating oil.

[0040] In this embodiment, a second electric telescopic rod 517 is installed on one side of the mounting block 56 , and the output shaft of the second electric telescopic rod 517 passes through the mounting block 56 , and the output shaft of the second electric telescopic rod 517 is fixedly connected to the oil tank 514 .

[0041] Specifically, the second electric telescopic rod 517 is started, and the output shaft of the second electric telescopic rod 517 drives the oil tank 514 to move in the first slide groove 57. The first slide groove 57 drives the second motor 510 to move synchronously through the fixed plate 512, and the L-shaped slide plate 59 slides in the second slide groove 58 to ensure the fixed position, so that the punching drill bit 513 is aligned with the next punching position.

[0042] In this embodiment, the outer side of the connecting shaft 511 is slidably connected with an isolating sleeve 518, and the inner wall of the isolating sleeve 518 is provided with a third sliding groove 519, and the third sliding groove 519 is designed with a slope height difference. The inner side of the third sliding groove 519 is slidably connected with a first sliding rod 520, and one end of the first sliding rod 520 is in contact with the inner wall of the third sliding groove 519, and the other end of the first sliding rod 520 is fixedly connected to the connecting shaft 511.

[0043] Specifically, the connecting shaft 511 drives the first slide bar 520 to rotate in the third slide groove 519. The height difference design of the third slide groove 519 enables the isolation sleeve 518 to move up and down, pressing the third spring 523 when moving upward. The tension of the third spring 523 assists the isolation sleeve 518 in resetting. When the isolation sleeve 518 moves upward, it offsets the isolation groove 521, allowing the lubricating oil in the oil tank 514 to enter the isolation groove 521.

[0044] In this embodiment, the outer side of the isolation sleeve 518 is slidably connected to the inner side of the isolation groove 521 near the lower end, the outer side of the isolation sleeve 518 fits with the inner wall of the isolation groove 521, and multiple groups of output holes 522 are opened on the inner side of the isolation groove 521. Multiple groups of oil delivery grooves 516 are opened on the outer side of the punching drill bit 513, and the output port of the output hole 522 is arranged inside the oil delivery groove 516. A third spring 523 is arranged below the outer blade 515 of the connecting shaft 511, and one end of the third spring 523 is fixedly connected to the isolation sleeve 518, and the other end of the third spring 523 is fixedly connected to the connecting shaft 511.

[0045] Specifically, after the lubricating oil in the oil tank 514 enters the isolation groove 521, it is output to the oil delivery groove 516 through the output hole 522. After the isolation sleeve 518 is reset, it enters, presses and closes the isolation groove 521 to stop the output. The tension of the third spring 523 assists the isolation sleeve 518 in resetting.

[0046] In this embodiment, a second slide rod 524 is fixedly connected to the inner side of the punching drill bit 513, a grinding plate 525 is slidably connected to the outer side of the second slide rod 524, a fourth spring 526 is arranged on the outer side of the second slide rod 524, one end of the fourth spring 526 is fixedly connected to the punching drill bit 513, the other end of the fourth spring 526 is fixedly connected to the grinding plate 525, and the other side of the grinding plate 525 is designed as an arc surface.

[0047] Specifically, when the punching drill 513 punches downward step by step, the grinding sheet 525 will touch the heat dissipation hole and chamfer the heat dissipation hole under the rotation of the punching drill 513 to remove burrs. After the punching drill 513 continues to move downward, the grinding sheet 525 slides toward the inside of the punching drill 513 and then the second slide bar 524 slides into the inside of the grinding sheet 525 and presses the fourth spring 526. Then, the inside of the heat dissipation hole is cleaned to avoid missing burrs. After the grinding sheet 525 is offset from the heat dissipation hole, the grinding sheet 525 continues to chamfer the heat dissipation hole when the fourth spring 526 is opened. The arc surface design facilitates the grinding sheet 525 to enter the heat dissipation hole.

[0048] Working principle: when in use, the brake disc body 7 is installed on the upper end of the placement pile 6 to complete the placement, and the cylinder 3 is started. The output shaft of the cylinder 3 drives the first connecting plate 41 to move downward, and the first connecting plate 41 drives the first motor 42 to move, and the first motor 42 drives the second connecting plate 43 and the first pressure rod 44 to move downward, and the first pressure rod 44 drives the pressure plate 45 to enter the inner wall of the brake disc body 7 and then fit with the placement pile 6, and the first electric telescopic rod 48 installed inside the mounting plate 47 is started, so that the output shaft of the first electric telescopic rod 48 drives the card block 49 to enter the ventilation slot 8 to fix the position of the brake disc body 7. When the first pressure rod 44 moves downward, the sliding block 51 is driven downward by the tension of the first spring 52, and when the pressure plate 45 gradually approaches the placement pile 6, The sliding block 51 will fit the upper end of the brake disc body 7 in advance, and the first pressure rod 44 continues to move downward, so that the sliding block 51 presses the first spring 52 upward, so that the punching drill bit 513 fits the upper end of the brake disc body 7 with force under the tension of the first spring 52, and then the mounting block 56 slides upward on the outside of the fixing rod 53 and cooperates with the limiting block 54 to press the second spring 55. The tension of the second spring 55 makes the punching drill bit 513 fit more closely to the upper end of the brake disc body 7, and the second motor 510 is started. The output shaft of the second motor 510 drives the connecting shaft 511 to rotate, and the connecting shaft 511 drives the punching drill bit 513 to rotate, so as to quickly punch the brake disc body 7. When punching, as the hole goes deeper, the first spring 52 and the second spring 55 are pressed together. The spring 55 gradually expands, and the tension causes the punching drill bit 513 to continue to move downward. When punching, debris is generated on the inner side of the ventilation slot 8, and the compressed air is diverted to the telescopic air pipe 410 through the air distribution pipe 411. When the block 49 is connected to the ventilation slot 8, the air flow is output inside the ventilation slot 8, the debris is discharged outward, and the punching drill bit 513 is cooled. When the connecting shaft 511 rotates, it drives the blade 515 to stir in the oil tank 514 to prevent the lubricating oil from depositing. Then the connecting shaft 511 drives the first sliding rod 520 to rotate in the third sliding groove 519. The height difference design of the third sliding groove 519 makes the isolation sleeve 518 move up and down, and the third spring 523 is pressed when it moves upward. The tension of the third spring 523 assists the isolation sleeve 518 in resetting, isolating When the sleeve 518 moves upward, it staggers the isolation groove 521, so that the lubricating oil in the oil tank 514 enters the output hole 522 and is output to the oil delivery groove 516. After the isolation sleeve 518 is reset, it enters, presses and closes the isolation groove 521 to stop the output. The output lubricating oil lubricates the punching drill bit 513 from top to bottom and reduces the friction heat. When the punching drill bit 513 punches downward step by step, the grinding sheet 525 will touch the heat dissipation hole and chamfer the heat dissipation hole under the rotation of the punching drill bit 513 to remove burrs. After the punching drill bit 513 continues to move downward, the grinding sheet 525 slides into the inside of the punching drill bit 513 and then makes the second slide bar 524 slide into the inside of the grinding sheet 525, and presses the fourth spring 526, and then cleans the inside of the heat dissipation hole to avoid missing burrs.After the grinding disc 525 is offset from the heat dissipation holes, when the fourth spring 526 expands, the grinding disc 525 continues to chamfer the heat dissipation holes, and under the airflow output by the telescopic air pipe 410, the debris in the heat dissipation holes is discharged outward through the ventilation grooves 8. After a set of punching is completed, the cylinder 3 is started to move upward, so that the positioning mechanism 4, the punching mechanism 5 and the brake disc body 7 are offset. The first motor 42 is started, and the output shaft of the first motor 42 drives the sliding block 51 to rotate a specified angle through the limiting strip 46, so that the mounting block 56 always maintains horizontal alignment with a set of ventilation grooves 8, so that the punching mechanism 5 calibrates the position of the upper end of the next ventilation groove 8 within the same diameter, and then punching is performed again. When the punching of the outermost side of the brake disc body 7 is completed, first contract the output shaft of the cylinder 3, start the second electric telescopic rod 517, and the output shaft of the second electric telescopic rod 517 drives the fuel tank 514 to move in the first chute 57. The first chute 57 drives the second motor 510 to move synchronously through the fixing plate 512, and the position is fixed by sliding the L-shaped sliding plate 59 in the second chute 58, so that the punching drill bit 513 is aligned with the next punching position.,

[0049] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A punching device for automobile brake discs, comprising a workbench, characterized in that: The upper end of the workbench is fixedly connected to a mounting bracket, a cylinder is installed on the upper end of the mounting bracket, the output shaft of the cylinder passes through the mounting bracket, a positioning mechanism is installed on the output shaft of the cylinder, the positioning mechanism includes a first pressure rod, a punching mechanism is arranged on the outer side of the first pressure rod, a placement pile is fixedly connected to the upper end of the workbench near the middle position, a brake disc body is installed on the outer side of the placement pile, a plurality of ventilation grooves are arranged on the inner side of the brake disc body, the positioning mechanism includes a first connecting plate fixedly connected to the output shaft of the cylinder, a first motor is installed on the lower end of the first connecting plate , a second connecting plate is fixedly connected to a position near the lower end of the housing of the first motor, the output shaft of the first motor passes through the second connecting plate, the output shaft of the first motor is fixedly connected to a first pressure rod, and two sets of symmetrical limit strips are fixedly connected to the outer side of the first pressure rod, the lower end of the first pressure rod is fixedly connected to a pressure plate, the outer side of the pressure plate fits with the inner wall of the brake disc body, the punching mechanism includes a sliding block slidably connected to the first pressure rod, a first spring is arranged on the outer side of the first pressure rod at the upper end of the sliding block, one end of the first spring is fixedly connected to the first pressure rod, and the first spring The other end of the sliding block is fixedly connected to the sliding block, and the upper end of the sliding block is fixedly connected to a fixing rod near the two ends, and the upper end of the fixing rod is fixedly connected to a limiting block, and the outer side of the limiting block is slidably connected to a mounting block, and the outer side of the mounting block is provided with a second sliding groove near the front and rear ends, and the inner side of the second sliding groove is slidably connected to an L-shaped slide plate, and the ends close to the two groups of L-shaped slide plates are fixedly connected to a fixing plate together. The upper end of the fixing plate is installed with a second motor, and the output shaft of the second motor is fixedly connected to a connecting shaft, and the lower end of the connecting shaft is fixedly connected to a punching drill bit. An isolation groove is provided at the upper end of the punching drill bit, and the lower part of the inner isolation groove of the punching drill bit is hollowed out. A second spring is provided on the outer side of the fixing rod, one end of the second spring is fixedly connected to the limit block, and the other end of the second spring is fixedly connected to the mounting block. An isolation sleeve is slidably connected to the outer side of the connecting shaft, and a third sliding groove is provided on the inner wall of the isolation sleeve. The third sliding groove is designed with a height difference of an inclined surface, and a first sliding rod is slidably connected to the inner side of the third sliding groove, one end of the first sliding rod is in contact with the inner wall of the third sliding groove, and the other end of the first sliding rod is fixedly connected to the connecting shaft.

2. The automobile brake disc processing and punching device according to claim 1, characterized in that: The inner side of the pressure plate is fixedly connected to a mounting plate, and a plurality of first electric telescopic rods are installed on the inner side of the mounting plate. The output shaft of the first electric telescopic rod is fixedly connected to a clamping block, and the other end of the clamping block is designed as an arc surface, and the outer side of the clamping block fits with the inner wall of the ventilation slot.

3. The automobile brake disc processing and punching device according to claim 2, characterized in that: An air distribution pipe is fixedly connected to the upper end of the mounting plate, an input port of the air distribution pipe is connected to the air compressor via an air pipe, an output port of the air distribution pipe is fixedly connected to a plurality of telescopic air pipes, the outer side of the telescopic air pipe passes through a card block, and the outer side of the telescopic air pipe is fixedly connected to the card block.

4. The automobile brake disc processing and punching device according to claim 1, characterized in that: A first slide groove is provided on the outer side of the mounting block near the upper and lower ends, the lower end of the fixing plate is fixedly connected to the oil tank, the connecting shaft is rotatably connected to the inner side of the oil tank, and the inner side of the oil tank outside the connecting shaft is fixedly connected to a blade via a sleeve.

5. The automobile brake disc processing and punching device according to claim 1, characterized in that: A second electric telescopic rod is installed on one side of the mounting block, an output shaft of the second electric telescopic rod passes through the mounting block, and the output shaft of the second electric telescopic rod is fixedly connected to the oil tank.

6. The automobile brake disc processing and punching device according to claim 1, characterized in that: The outer side of the isolation sleeve is slidably connected to the inner side of the isolation groove near the lower end, the outer side of the isolation sleeve fits with the inner wall of the isolation groove, the inner side of the isolation groove is provided with multiple groups of output holes, the outer side of the punching drill bit is provided with multiple groups of oil delivery grooves, the output ports of the output holes are arranged inside the oil delivery grooves, and a third spring is arranged below the outer blade of the connecting shaft, one end of the third spring is fixedly connected to the isolation sleeve, and the other end of the third spring is fixedly connected to the connecting shaft.

7. The automobile brake disc processing and punching device according to claim 1, characterized in that: A second sliding rod is fixedly connected to the inner side of the punching drill bit, a grinding plate is slidably connected to the outer side of the second sliding rod, a fourth spring is arranged on the outer side of the second sliding rod, one end of the fourth spring is fixedly connected to the punching drill bit, the other end of the fourth spring is fixedly connected to the grinding plate, and the other side of the grinding plate is designed as an arc surface.

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