Positioning tool for brake disc processing

Abstract

The invention discloses a positioning tool for processing a brake disc, comprising a processing mounting frame, a rotatable electromagnetic suction cup is mounted on the processing mounting frame through a turntable bearing, a positioning hole is arranged in the middle of the electromagnetic suction cup, a toothed disc is mounted on the back of the electromagnetic suction cup, a servo motor is mounted on the back of the processing mounting frame, and a power output end of the servo motor is meshed and connected with the toothed disc through a gear. The beneficial effect of the invention is that by arranging a servo motor to drive the electromagnetic suction cup to rotate on the processing mounting frame through a gear and a toothed disc, the angle of the electromagnetic suction cup can be easily adjusted during the processing process to process the processing surfaces of the brake disc workpiece at different angles, which effectively saves manpower and improves processing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of brake disc processing tooling, in particular to a positioning tooling for brake disc processing. Background Art

[0002] Brakes are components in the braking system that generate braking force to hinder the movement or movement trend of the vehicle. Except for various retarder devices, automobile brakes are almost all friction brakes that use the friction between the fixed element and the working surface of the rotating element to generate braking torque. At present, the friction brakes widely used in various types of automobiles can be divided into two categories: drum type and disc type according to the different rotating elements. The difference between them is that the rotating element in the friction pair of the drum brake is the brake drum, and its cylindrical surface is the working surface; the rotating element in the friction pair of the disc brake is a disc-shaped brake disc, and its end face is the working surface. The brake disc is the friction pair of the disc brake. In addition to having the strength and rigidity required as a component, it should also have the highest and most stable friction coefficient, as well as appropriate wear resistance, heat resistance, heat dissipation and heat capacity.

[0003] Some existing brake disc tooling mainly relies on clamps to position the brake disc and then process it. Since the brake disc is generally circular and has many surfaces to be processed, it is necessary to manually change the clamping position of the brake disc to adjust the processing position of the brake disc during the processing. Not only is the operation cumbersome, but clamping the brake disc for a long time can easily scratch the surface of the brake disc, which has certain limitations. Summary of the invention

[0004] The purpose of the present invention is to overcome the disadvantages of some existing brake disc tools that mainly rely on clamps to position the brake disc and then process it. Since the brake disc is generally circular and has more surfaces to be processed, it is necessary to manually change the clamping position of the brake disc to adjust the processing position of the brake disc during the processing. Not only is the operation cumbersome, but long-term clamping of the brake disc is likely to scratch the surface of the brake disc, which has certain limitations. A positioning tool for brake disc processing is provided.

[0005] The objective of the present invention is achieved through the following technical scheme: a positioning tool for brake disc processing, comprising a processing mounting frame, the processing mounting frame is equipped with a rotatable electromagnetic suction cup through a turntable bearing, a positioning hole is arranged in the middle of the electromagnetic suction cup, a gear disc is arranged on the back of the electromagnetic suction cup, a servo motor is arranged on the back of the processing mounting frame, and the power output end of the servo motor is meshed and connected with the gear disc through a gear; by arranging a servo motor to drive the electromagnetic suction cup to rotate on the processing mounting frame through the gear and the gear disc, the angle of the electromagnetic suction cup can be easily adjusted during the processing to process the processing surfaces of the brake disc workpiece with different angles, thereby effectively saving manpower and improving the processing efficiency.

[0006] A slidable slide is installed below the processing mounting frame, and a positioning assembly is installed on the slide. The positioning assembly includes a first hydraulic cylinder, and a clamping frame is installed at the lifting end of the first hydraulic cylinder. A plurality of groups of claws corresponding to the electromagnetic suction cup are installed on the clamping frame. The plurality of groups of claws are arranged in a circular array about the clamping frame, and a positioning column adapted to the positioning hole is installed on the clamping frame. The positioning column is arranged at the center of the plurality of groups of claws. By arranging the clamping frame, it is convenient to clamp and install the brake disc workpiece. At the same time, the claws on the clamping frame can pass through the center of the brake disc workpiece and dock with the positioning hole, so that when the electromagnetic suction cup is started to adsorb the brake disc workpiece, the positioning hole is also located at the center of the brake disc workpiece, thereby ensuring that the center of the brake disc workpiece coincides with the center of the electromagnetic suction cup, and ensuring that the center of the brake disc workpiece will not shift when the electromagnetic suction cup rotates, thereby effectively positioning the brake disc workpiece, and realizing effective processing of the brake disc workpiece when the electromagnetic suction cup drives the brake disc workpiece to rotate, realizing dynamic processing of the brake disc workpiece, and meeting different processing requirements.

[0007] A moving car is arranged below the processing and mounting frame, a slide groove is arranged on the moving car, the slide table is slidably mounted on the slide groove, a second hydraulic cylinder is arranged on the moving car, the telescopic end of the second hydraulic cylinder is connected to the slide table, the second hydraulic cylinder can drive the positioning component on the slide table to move perpendicularly to the electromagnetic suction cup, when installing the brake disc workpiece, the brake disc workpiece is first clamped by the clamping claws, and then the first hydraulic cylinder drives the clamping frame and the clamping claws to rise to the required height, at this time, the second hydraulic cylinder drives the slide table to make the brake disc workpiece close to the electromagnetic suction cup, so that the positioning column is inserted into the positioning hole, and one side of the brake disc workpiece is fitted with the electromagnetic suction cup, and by setting the second hydraulic cylinder to drive the positioning component on the slide table to move perpendicularly to the electromagnetic suction cup, the brake disc workpiece can be installed on the electromagnetic suction cup, thereby saving manpower and improving processing efficiency;

[0008] A control panel is installed on the processing mounting frame, and the control panel is respectively connected to the electromagnetic suction cup, the second hydraulic cylinder, the first hydraulic cylinder, the electric push rod and the servo motor. The control panel is set to control the operation of the electromagnetic suction cup, the second hydraulic cylinder, the first hydraulic cylinder, the electric push rod and the servo motor to improve the convenience of operation.

[0009] A further technical solution is that a plurality of groups of electric push rods in a circular array are installed on the clamping frame, and a plurality of groups of claws are respectively installed on the telescopic ends of the electric push rods. The arrangement of the electric push rods can enable the claws to clamp brake disc workpieces of different sizes, while ensuring that the centers of brake disc workpieces of different sizes coincide with the positioning columns, thereby facilitating the positioning processing of the brake disc workpiece.

[0010] A further technical solution is that the inner side of the claw in contact with the brake disc workpiece is arranged in an arc shape, and a protective rubber pad corresponding to the brake disc workpiece is installed on the claw. The inner side of the claw in contact with the brake disc workpiece is arranged in an arc shape so that the claw can clamp the brake disc workpiece more stably. At the same time, the protective rubber pad is arranged to facilitate the claw to scratch the surface of the brake disc workpiece.

[0011] A further technical solution is that an angle line corresponding to the electromagnetic chuck is provided on the turntable bearing, and an angle indicator block corresponding to the angle line is installed on the electromagnetic chuck. The angle line and the angle indicator block are arranged in coordination to facilitate the staff to observe and adjust the rotation angle of the electromagnetic chuck, thereby improving the processing angle.

[0012] A further technical solution is that the processing mounting frame is installed on the mobile vehicle through a bracket, and the bracket is equipped with a reinforcing frame connected to the processing mounting frame and the mobile vehicle respectively. The processing mounting frame is located at one end of the mobile vehicle, and a placement groove is installed on the end of the mobile vehicle away from the processing mounting frame, and a counterweight block is installed in the placement groove. Setting the processing mounting frame at one end of the mobile vehicle can facilitate the staff to process the electromagnetic suction cup on one side of the processing mounting frame. The placement groove and the counterweight block are provided to ensure the balance of the mobile vehicle when the electromagnetic suction cup is installed with a heavier brake disc workpiece.

[0013] A further technical solution is that the height of the bracket is greater than the height of the positioning assembly when in the retracted state, and the second hydraulic cylinder can drive the slide and the positioning assembly to retract onto the mobile vehicle. Setting the height of the bracket greater than the height of the positioning assembly when in the retracted state can allow the slide and the positioning assembly to retract onto the mobile vehicle, thereby saving space after the brake disc workpiece is installed and positioned, facilitating operation by staff, and at the same time, the slide and the positioning assembly retract onto the mobile vehicle to facilitate the movement of the mobile vehicle.

[0014] A further technical solution is that universal self-locking wheels are installed on the bottom surface of the mobile vehicle, and the universal self-locking wheels are provided to facilitate the movement and fixation of the mobile vehicle.

[0015] A further technical solution is that a sliding rod is installed inside the slide groove, and a sliding block slidably connected to the sliding rod is installed on the slide. The provision of the sliding rod and the sliding block can ensure the stability of the slide moving on the slide groove.

[0016] A further technical solution is that a protective groove is installed at the bottom of the processing mounting frame, and the protective groove is arranged below the electromagnetic suction cup. The protective groove can enable the brake disc workpiece to fall into the protective groove when the electromagnetic suction cup is accidentally powered off during the processing of the brake disc workpiece, thereby preventing the brake disc workpiece from falling and injuring the staff, reducing safety hazards, and also protecting the brake disc workpiece.

[0017] The present invention has the following advantages: 1. The present invention drives the electromagnetic chuck to rotate on the processing mounting frame by arranging a servo motor through gears and a toothed disc, so that the angle of the electromagnetic chuck can be easily adjusted during the processing to process the processing surfaces of the brake disc workpiece at different angles, effectively saving manpower and improving the processing efficiency. By arranging a second hydraulic cylinder to drive the positioning assembly on the slide table to move perpendicularly to the electromagnetic chuck, the brake disc workpiece can be installed on the electromagnetic chuck, saving manpower and improving the processing efficiency.

[0018] 2. The present invention arranges a claw on the clamping frame to pass through the center of the brake disc workpiece and dock with the positioning hole, so that when the electromagnetic suction cup is started to adsorb the brake disc workpiece, the positioning hole is also located in the center of the brake disc workpiece, thereby ensuring that the center of the brake disc workpiece coincides with the center of the electromagnetic suction cup, ensuring that the center of the brake disc workpiece will not shift when the brake disc workpiece rotates with the electromagnetic suction cup, thereby effectively positioning the brake disc workpiece, and realizing effective processing of the brake disc workpiece when the electromagnetic suction cup drives the brake disc workpiece to rotate, realizing dynamic processing of the brake disc workpiece, and meeting different processing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the back three-dimensional structure of the present invention;

[0021] Figure 3 It is a schematic cross-sectional side view of the structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the state of the brake disc workpiece installation process in the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the clamping frame in the present invention;

[0024] Figure 6 For the present invention Figure 3 A magnified schematic diagram of the structure in the middle;

[0025] In the figure, 1. processing and mounting frame; 2. electromagnetic suction cup; 3. turntable bearing; 4. positioning hole; 5. slide; 6. first hydraulic cylinder; 7. clamping frame; 8. electric push rod; 9. claw; 10. control panel; 11. angle line; 12. angle indicator block; 13. protective groove; 14. second hydraulic cylinder; 15. placement groove; 16. counterweight block; 17. mobile car; 18. universal self-locking wheel; 19. bracket; 20. reinforcement frame; 21. servo motor; 22. gear; 23. gear disc; 24. protective rubber pad; 25. positioning column; 26. slide groove; 27. slide rod; 28. slider; 29. ​​brake disc workpiece. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figures 1 to 6As shown, the positioning tool for brake disc processing includes a processing mounting frame 1, on which a rotatable electromagnetic suction cup 2 is installed through a turntable bearing 3, a positioning hole 4 is provided in the middle of the electromagnetic suction cup 2, a gear disc 23 is installed on the back of the electromagnetic suction cup 2, and a servo motor 21 is installed on the back of the processing mounting frame 1, and the power output end of the servo motor 21 is meshed and connected with the gear disc 23 through a gear 22; by arranging the servo motor 21 to drive the electromagnetic suction cup 2 to rotate on the processing mounting frame 1 through the gear 22 and the gear disc 23, the angle of the electromagnetic suction cup 2 can be easily adjusted during the processing process to process the processing surfaces of different angles on the brake disc workpiece 29, which effectively saves manpower and improves the processing efficiency.

[0033] A slidable slide 5 is installed below the processing mounting frame 1, and a positioning assembly is installed on the slide 5. The positioning assembly includes a first hydraulic cylinder 6, and a clamping frame 7 is installed at the lifting end of the first hydraulic cylinder 6. A plurality of groups of claws 9 corresponding to the electromagnetic suction cup 2 are installed on the clamping frame 7. The plurality of groups of claws 9 are arranged in a circular array about the clamping frame 7, and a positioning column 25 adapted to the positioning hole 4 is installed on the clamping frame 7. The positioning column 25 is located at the center of the plurality of groups of claws 9. By setting the clamping frame 7, it is convenient to clamp and install the brake disc workpiece 29, and at the same time, the claws 9 on the clamping frame 7 can pass through The central axis hole of the brake disc workpiece 29 is docked with the positioning hole 4, so that when the electromagnetic suction cup 2 is started to adsorb the brake disc workpiece 29, the positioning hole 4 is also located at the center of the brake disc workpiece 29, thereby ensuring that the center of the brake disc workpiece 29 coincides with the center of the electromagnetic suction cup 2, and ensuring that the center of the brake disc workpiece 29 will not shift when the electromagnetic suction cup 2 rotates, thereby effectively positioning the brake disc workpiece 29, and realizing effective processing of the brake disc workpiece 29 when the electromagnetic suction cup 2 drives the brake disc workpiece 29 to rotate, realizing dynamic processing of the brake disc workpiece 29, and meeting different processing requirements.

[0034] A moving vehicle 17 is arranged below the processing and mounting frame 1, and a slide groove 26 is arranged on the moving vehicle 17, and the slide 5 is slidably mounted on the slide groove 26. A second hydraulic cylinder 14 is arranged on the moving vehicle 17, and the telescopic end of the second hydraulic cylinder 14 is connected to the slide 5. The second hydraulic cylinder 14 can drive the positioning component on the slide 5 to move perpendicularly to the electromagnetic suction cup 2. When installing the brake disc workpiece 29, the brake disc workpiece 29 is first clamped by the clamping claw 9, and then the first hydraulic cylinder 6 drives the clamping frame 7 and the clamping claw 9 to rise to the required height. At this time, the second hydraulic cylinder 14 drives the slide 5 to make the brake disc workpiece 29 close to the electromagnetic suction cup 2, so that the positioning column 25 is inserted into the positioning hole 4, and one side of the brake disc workpiece 29 is fitted with the electromagnetic suction cup 2. By setting the second hydraulic cylinder 14 to drive the positioning component on the slide 5 to move perpendicularly to the electromagnetic suction cup 2, the brake disc workpiece 29 can be installed on the electromagnetic suction cup 2, saving manpower and improving processing efficiency.

[0035] When the second hydraulic cylinder 14 drives the slide 5 to make the brake disc workpiece 29 close to the electromagnetic suction cup 2, the positioning column 25 is inserted into the positioning hole 4, and one side of the brake disc workpiece 29 is fitted with the electromagnetic suction cup 2, the electromagnetic suction cup 2 is started to make the electromagnetic suction cup 2 absorb the brake disc workpiece 29, and then the first hydraulic cylinder 6, the electric push rod 8, and the second hydraulic cylinder 14 are controlled by the control panel 10 to shrink the slide 5 and the positioning assembly to the mobile vehicle 17. At this time, the servo motor 21 can be started to drive the electromagnetic suction cup 2 to rotate on the turntable bearing 3 to adjust the processing angle of the brake disc workpiece 29, and the brake disc workpiece 29 can be processed. At the same time, the servo motor 21 can drive the brake disc workpiece 29 on the electromagnetic suction cup 2 to rotate continuously, so as to realize dynamic processing of the brake disc workpiece 29, such as overall cutting, chamfering and other operations.

[0036] A control panel 10 is installed on the processing mounting frame 1, and the control panel 10 is respectively connected to the electromagnetic suction cup 2, the second hydraulic cylinder 14, the first hydraulic cylinder 6, the electric push rod 8 and the servo motor 21. The control panel 10 is set to control the operation of the electromagnetic suction cup 2, the second hydraulic cylinder 14, the first hydraulic cylinder 6, the electric push rod 8 and the servo motor 21 to improve the convenience of operation.

[0037] A plurality of groups of electric push rods 8 in a circular array are installed on the clamping frame 7, and a plurality of groups of claws 9 are respectively installed on the telescopic ends of the electric push rods 8. The arrangement of the electric push rods 8 enables the claws 9 to clamp brake disc workpieces 29 of different sizes, and at the same time can ensure that the centers of brake disc workpieces 29 of different sizes coincide with the positioning columns 25, thereby facilitating the positioning processing of the brake disc workpiece 29.

[0038] The inner side of the claw 9 that contacts the brake disc workpiece 29 is arc-shaped, and a protective rubber pad 24 corresponding to the brake disc workpiece 29 is installed on the claw 9. The inner side of the claw 9 that contacts the brake disc workpiece 29 is arc-shaped, which can make the claw 9 clamp the brake disc workpiece 29 more stably. At the same time, the protective rubber pad 24 is provided to facilitate the claw 9 to scratch the surface of the brake disc workpiece 29.

[0039] An angle line 11 corresponding to the electromagnetic chuck 2 is provided on the turntable bearing 3, and an angle indicator block 12 corresponding to the angle line 11 is installed on the electromagnetic chuck 2. The angle line 11 and the angle indicator block 12 are arranged in coordination to facilitate the staff to observe and adjust the rotation angle of the electromagnetic chuck 2, thereby improving the processing angle.

[0040] The processing mounting frame 1 is installed on the mobile vehicle 17 through the bracket 19, and the bracket 19 is equipped with a reinforcing frame 20 connected to the processing mounting frame 1 and the mobile vehicle 17 respectively. The processing mounting frame 1 is located at one end of the mobile vehicle 17, and a placement groove 15 is installed on the end of the mobile vehicle 17 away from the processing mounting frame 1. A counterweight block 16 is installed in the placement groove 15. Setting the processing mounting frame 1 at one end of the mobile vehicle 17 can facilitate the staff to process the electromagnetic suction cup 2 on one side of the processing mounting frame 1. The placement groove 15 and the counterweight block 16 ensure the balance of the mobile vehicle 17 when the electromagnetic suction cup 2 is installed with a heavier brake disc workpiece 29.

[0041] The height of the bracket 19 is greater than the height of the positioning assembly when in the retracted state. The second hydraulic cylinder 14 can drive the slide 5 and the positioning assembly to retract onto the mobile vehicle 17. Setting the height of the bracket 19 greater than the height of the positioning assembly when in the retracted state can allow the slide 5 and the positioning assembly to retract onto the mobile vehicle 17, thereby saving space after the installation and positioning of the brake disc workpiece 29 is completed, facilitating operation by the staff. At the same time, the slide 5 and the positioning assembly are retracted onto the mobile vehicle 17 to facilitate the movement of the mobile vehicle 17.

[0042] Universal self-locking wheels 18 are installed on the bottom surface of the moving vehicle 17 , and the universal self-locking wheels 18 are provided to facilitate the movement and fixation of the moving vehicle 17 .

[0043] A slide bar 27 is installed inside the slide groove 26 , and a slider 28 slidably connected to the slide bar 27 is installed on the slide platform 5 . The slide bar 27 and the slider 28 are provided to ensure the stability of the slide platform 5 moving on the slide groove 26 .

[0044] A protective groove 13 is installed at the lower part of the processing mounting frame 1, and the protective groove 13 is arranged below the electromagnetic suction cup 2. The protective groove 13 can enable the brake disc workpiece 29 to fall into the protective groove 13 when the electromagnetic suction cup 2 is accidentally powered off during the processing of the brake disc workpiece 29, thereby preventing the brake disc workpiece 29 from falling and injuring the staff, reducing safety hazards, and also protecting the brake disc workpiece 29.

[0045] The working process of the present invention is as follows: when positioning and installing the brake disc workpiece 29, the brake disc workpiece 29 is first installed on the claw 9. The length of the claw 9 can be adjusted by the electric push rod 8 to meet the needs of clamping brake disc workpieces 29 of different sizes. Then the second hydraulic cylinder 14 drives the slide 5 to make the brake disc workpiece 29 close to the electromagnetic suction cup 2, so that the positioning column 25 is inserted into the positioning hole 4. After one side of the brake disc workpiece 29 is fitted with the electromagnetic suction cup 2, the electromagnetic suction cup 2 is started to make the electromagnetic suction cup 2 absorb the brake disc workpiece 29. At this time, the control panel 10 controls the first hydraulic cylinder 6, the electric push rod 8, and the second hydraulic cylinder 14 to shrink the slide 5 and the positioning assembly to the mobile vehicle 17. The servo motor 21 can be started to drive the electromagnetic suction cup 2 to rotate on the turntable bearing 3 to adjust the processing angle of the brake disc workpiece 29, and the brake disc workpiece 29 can be processed. At the same time, the servo motor 21 can drive the brake disc workpiece 29 on the electromagnetic suction cup 2 to rotate continuously, so as to realize dynamic processing of the brake disc workpiece 29, such as overall cutting, chamfering and other operations.

[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A positioning tool for machining a brake disc, comprising a machining mounting frame (1), characterized in that: The processing mounting frame (1) is provided with a rotatable electromagnetic suction cup (2) via a turntable bearing (3); a positioning hole (4) is provided in the middle of the electromagnetic suction cup (2); a toothed disc (23) is installed on the back of the electromagnetic suction cup (2); a servo motor (21) is installed on the back of the processing mounting frame (1); a power output end of the servo motor (21) is meshedly connected with the toothed disc (23) via a gear (22); A slidable slide (5) is installed below the processing mounting frame (1), and a positioning assembly is installed on the slide (5), and the positioning assembly includes a first hydraulic cylinder (6), and a clamping frame (7) is installed at the lifting end of the first hydraulic cylinder (6), and a plurality of groups of claws (9) corresponding to the electromagnetic suction cup (2) are installed on the clamping frame (7), and the plurality of groups of claws (9) are arranged in a circular array with respect to the clamping frame (7), and a positioning column (25) adapted to the positioning hole (4) is installed on the clamping frame (7), and the positioning column (25) is arranged at the center of the plurality of groups of claws (9); A moving vehicle (17) is arranged below the processing mounting frame (1), a slide groove (26) is installed on the moving vehicle (17), the slide table (5) is slidably installed on the slide groove (26), a second hydraulic cylinder (14) is installed on the moving vehicle (17), the telescopic end of the second hydraulic cylinder (14) is connected to the slide table (5), and the second hydraulic cylinder (14) can drive the positioning component on the slide table (5) to move perpendicular to the electromagnetic suction cup (2); A control panel (10) is mounted on the processing mounting frame (1), and the control panel (10) is respectively connected to the electromagnetic chuck (2), the second hydraulic cylinder (14), the first hydraulic cylinder (6), the electric push rod (8) and the servo motor (21).

2. The positioning tool for brake disc machining according to claim 1, characterized in that: The clamping frame (7) is equipped with a plurality of electric push rods (8) arranged in a circular array, and the plurality of clamping claws (9) are respectively installed at the telescopic ends of the electric push rods (8).

3. The positioning tool for brake disc machining according to claim 2, characterized in that: The inner side of the clamping claw (9) in contact with the brake disc workpiece (29) is arranged in an arc shape, and a protective rubber pad (24) corresponding to the brake disc workpiece (29) is installed on the clamping claw (9).

4. The positioning tool for brake disc machining according to claim 1, characterized in that: The turntable bearing (3) is provided with an angle line (11) corresponding to the electromagnetic suction cup (2), and the electromagnetic suction cup (2) is mounted with an angle indicating block (12) corresponding to the angle line (11).

5. The positioning tool for brake disc machining according to claim 1, characterized in that: The processing mounting frame (1) is mounted on a mobile vehicle (17) via a bracket (19); a reinforcing frame (20) is mounted on the bracket (19) and is connected to the processing mounting frame (1) and the mobile vehicle (17) respectively; the processing mounting frame (1) is located at one end of the mobile vehicle (17); a placement groove (15) is mounted on the end of the mobile vehicle (17) away from the processing mounting frame (1); a counterweight (16) is mounted in the placement groove (15).

6. The positioning tool for brake disc machining according to claim 5, characterized in that: The height of the bracket (19) is greater than the height of the positioning assembly when in a retracted state, and the second hydraulic cylinder (14) can drive the slide (5) and the positioning assembly to retract onto the moving vehicle (17).

7. The positioning tool for brake disc machining according to claim 1, characterized in that: Universal self-locking wheels (18) are installed on the bottom surface of the mobile vehicle (17).

8. The positioning tool for brake disc machining according to claim 1, characterized in that: A sliding rod (27) is installed inside the sliding groove (26), and a sliding block (28) slidably connected to the sliding rod (27) is installed on the sliding platform (5).

9. The positioning tool for brake disc machining according to claim 1, characterized in that: A protection groove (13) is installed at the lower part of the processing mounting frame (1), and the protection groove (13) is arranged below the electromagnetic suction cup (2).

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