A turning and grinding machine for high-precision and high-efficiency machining of brake discs

Abstract

The present invention relates to the field of brake disc processing, and specifically to a high-precision and high-efficiency turning and grinding machine for processing brake discs, comprising a first U-shaped frame, a mobile frame, an outer ring, a grinding piece, a driving assembly, and an adjusting assembly. The high-precision and high-efficiency turning and grinding machine of the present invention can control the sliding trajectory of the mobile frame through the driving assembly and the adjusting assembly arranged on the mobile frame, so as to keep the two mobile frames sliding synchronously to the brake disc, so that the two grinding pieces can synchronously grind the upper and lower surfaces of the brake disc, and the adjusting assembly can adjust the adjusting assembly so that the two grinding pieces can synchronously grind brake discs of different thicknesses.

Description

Technical Field

[0001] The present invention relates to the technical field of brake disc processing, and in particular to a turning and grinding machine for high-precision and high-efficiency processing of brake discs. Background Art

[0002] The brake disc is also called brake pad. In the car's braking system, the brake disc is an extremely critical safety part. The brake disc plays a decisive role in the quality of all braking effects. Therefore, a good brake disc is the guardian of people and cars.

[0003] Currently, most brake discs are made by casting, so they need to be polished after casting. The most commonly used equipment for grinding brake discs is the machine tool. After the operator clamps the brake disc with the three-jaw chuck on the machine tool, he moves the high-speed rotating grinding disc to contact the surface of the brake disc, and the grinding disc will grind the brake disc.

[0004] As for some turning and grinding machines, since the brake disc is installed on a mounting seat, it is first turned and ground by a turning part, and then ground by a grinding disc. When the brake disc is ground by the grinding disc, the brake disc needs to move up and down differently, so as to grind the upper and lower surfaces of the brake disc. When the grinding disc moves up and down, a driving source is required to continuously drive the grinding disc to move, which can accelerate the wear of the driving source. Moreover, the continuous up and down movement of the grinding disc can easily extend the grinding time of the brake disc, thereby easily reducing the grinding efficiency of the brake disc. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a high-precision and high-efficiency turning and grinding machine for brake disc processing, so as to solve the problem that the above-mentioned grinding disc needs to move up and down continuously to grind the upper and lower surfaces of the brake disc, thereby causing low brake disc grinding efficiency.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A turning and grinding machine for high-precision and high-efficiency processing of brake discs, comprising a machine tool, a car door is arranged on the machine tool, a turning tool and a mounting seat are arranged inside the machine tool, a first U-shaped frame is installed inside the machine tool, two moving frames are installed on the first U-shaped frame, an outer ring is arranged inside the moving frame, and a grinding piece is rotatably connected to the inner wall of the outer ring, when the first U-shaped frame slides toward the mounting seat, the sliding tracks of the two moving frames are oblique and close to each other, when the moving frames move to the surface of the brake disc, the sliding tracks of the two moving frames change from oblique to parallel, after the moving frames slide to the extreme position, the grinding pieces are close to each other and abut against the surface of the brake disc, so that brake discs of different thicknesses can be synchronously ground;

[0008] The mobile rack is provided with a driving component and an adjusting component, and the driving component cooperates with the adjusting component to control the sliding track of the mobile rack;

[0009] The driving assembly includes two end plates fixed on the inner cavity wall of the machine tool, and the two end plates are symmetrical with the first U-shaped frame as the center, the end plate is rotatably connected to one side of the first U-shaped frame by two connecting frames, and the two connecting frames are obliquely arranged on the end plates, and the two connecting frames are symmetrical with the end plates as the center, the interior of the connecting frame is slidably connected to a first sliding column, and the first sliding column is rotatably connected to the outer wall of the moving frame at one end away from the end plate, and the first sliding column cooperates with the connecting frame to guide the moving frame, so that the two moving frames are close to each other, thereby synchronously grinding brake discs of different thicknesses;

[0010] A plurality of bending plates are fixed on the inner cavity wall of the machine tool, and the number of the bending plates is the same as the number of the connecting frames, and the plurality of connecting frames correspond to the bending plates one by one, and a first reset spring is fixed between a side of the connecting frame facing the bending plate and a bent portion of the bending plate, for supporting the connecting frame, so as to facilitate the reset of the connecting frame;

[0011] The adjustment assembly includes a second U-shaped frame arranged on the connecting frame, the inner wall of the second U-shaped frame is rotatably connected to the first roller, a second return spring is fixed between the side of the second U-shaped frame facing the moving frame and the moving frame, a third U-shaped frame is arranged on one side of the second U-shaped frame, the inner wall of the third U-shaped frame is rotatably connected to the second roller, and the outer surface of the second roller is in contact with the surface of the corresponding connecting frame, and a connecting arm is fixed between the second U-shaped frame and the third U-shaped frame.

[0012] Preferably, a release assembly is provided on the movable frame for releasing the limit received by the second U-shaped frame, thereby facilitating the control of the rotation angle of the connecting frame.

[0013] Preferably, the release assembly includes a cylinder fixed on the outer wall of the first U-shaped frame, a second sliding column is slidably connected to the inside of the cylinder, a third return spring is fixed between one end of the second sliding column located inside the cylinder and the inner wall of the cylinder, and an L-shaped connecting plate is fixed to the outer wall of the second sliding column.

[0014] Preferably, a first arc block is fixed to one side wall of the L-shaped connecting plate facing the second U-shaped frame, a second arc block is fixed to one side wall of the second U-shaped frame facing the L-shaped connecting plate, and a fixing plate is fixed between the two symmetrical L-shaped connecting plates.

[0015] Preferably, the movable frame is provided with a pushing assembly for pushing the outer ring downward, thereby facilitating the grinding of the brake disc by the grinding piece.

[0016] Preferably, the pushing assembly includes a third arc-shaped block fixed on the outer wall of the outer ring, a top plate is fixed between the two second sliding columns on the movable frame, a second support plate is fixed on the side of the top plate facing the movable frame, a fourth arc-shaped block is fixed to the bottom of the second support plate, a fixing ring is fixed to the inner bottom wall of the first U-shaped frame, and the inner hole diameter of the fixing ring is greater than the diameter of the grinding part, a plurality of fourth reset springs are fixed between the top of the fixing ring and the bottom of the outer ring, and the distances between the plurality of fourth reset springs are equal.

[0017] The beneficial effects of the present invention are:

[0018] 1. Through a first U-shaped frame arranged on the machine tool, a moving frame arranged on the first U-shaped frame, an outer ring arranged on the moving frame, and a grinding piece arranged inside the outer ring, when the first U-shaped frame slides toward the mounting seat, the sliding tracks of the two moving frames are oblique and close to each other. When the moving frames move to the surface of the brake disc, the sliding tracks of the two moving frames change from oblique to parallel. After the moving frames slide to the extreme position, the grinding pieces are close to each other and abut against the surface of the brake disc, thereby facilitating the synchronous grinding of brake discs of different thicknesses and improving the grinding efficiency of the brake disc.

[0019] 2. Through the driving assembly and adjusting assembly arranged on the moving frame, the driving assembly can control the sliding trajectory of the moving frame, so as to keep the two moving frames sliding synchronously to the brake disc, so that the two grinding pieces can synchronously grind the upper and lower surfaces of the brake disc, and the adjusting assembly can adjust the adjusting assembly so that the two grinding pieces can synchronously grind the brake discs of different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 It is a front view structural schematic diagram of the present invention.

[0022] Figure 3 It is a structural schematic diagram of the mobile rack of the present invention.

[0023] Figure 4 It is a schematic diagram of the structure of the driving assembly of the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the regulating component of the present invention.

[0025] Figure 6 It is a schematic structural diagram of the release assembly of the present invention.

[0026] Figure 7 It is a schematic structural diagram of the outer ring of the present invention.

[0027] Figure 8 It is a schematic structural diagram of the pushing assembly of the present invention.

[0028] In the figure:

[0029] 10. Machine tool; 11. Car door; 12. Mounting seat; 13. First U-shaped frame; 14. Moving frame; 15. Outer ring; 16. Grinding piece; 17. Driving source; 18. Limiting plate;

[0030] 20. driving assembly; 21. connecting frame; 22. first sliding column; 23. first return spring; 24. bending plate; 25. slide rail; 26. slide plate; 27. end plate;

[0031] 30. Adjustment assembly; 31. Second U-shaped frame; 32. First roller; 33. Second return spring; 34. Connecting arm; 35. Third U-shaped frame; 36. Second roller;

[0032] 40. Release assembly; 41. Cylinder; 42. Second sliding column; 43. Third return spring; 44. L-shaped connecting plate; 45. First arc block; 46. Second arc block; 47. Fixed plate;

[0033] 50. Pushing assembly; 51. Top plate; 53. Third arc block; 54. Second supporting plate; 55. Fourth arc block; 56. Fixed ring; 57. Fourth return spring. DETAILED DESCRIPTION

[0034] The following will refer to the attached Figures 1 to 8 The embodiments of the present invention are described in detail. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0035] A high-precision and high-efficiency turning and grinding machine for brake discs, as shown in the attached Figure 1-Figure 8 As shown, including:

[0036] The machine tool 10 is provided with a car door 11. A mounting seat 12 and a first U-shaped frame 13 are installed inside the machine tool 10. The mounting seat 12 is used to mount the brake disc, so as to facilitate grinding the brake disc. Two movable frames 14 are installed inside the first U-shaped frame 13. The movable frames 14 are U-shaped, and the two movable frames 14 are symmetrical with the first U-shaped frame 13 as the center. The inner parts of the two movable frames 14 are slidably connected with an outer ring 15. The inner wall of the outer ring 15 is rotatably connected with a grinding piece 16. The grinding piece 16 has an inner concave cavity. The grinding piece 16 is used to grind the brake disc. Grinding, so as to maintain the performance of the brake disc, a driving source 17 is installed on the top of the first U-shaped frame 13, and the inner wall of the first U-shaped frame 13 is rotatably connected with a rotating shaft, and a plurality of limit plates 18 are fixed on the outer wall of the rotating shaft, and the plurality of limit plates 18 are at equal distances from each other, and the plurality of limit plates 18 are cross-shaped, a first circular hole is opened in the middle of the movable frame 14, and the rotating shaft is located inside the first circular hole, and the diameter of the rotating shaft is smaller than the diameter of the first circular hole, a cross-shaped sliding hole is opened in the middle of the grinding piece 16, and the rotating shaft and the limit plates 18 are both located inside the cross-shaped sliding hole.

[0037] Since the two moving frames 14 can approach and move away from each other, the interior of the machine tool 10 is provided with a turning tool and a cylinder, and the piston rod end of the cylinder is fixed to a side wall of the first U-shaped frame 13. The door 11 on the machine tool 10 is opened, and then the brake disc is installed on the mounting seat 12. The turning tool is turned on by the control panel on the machine tool 10. The turning tool first turns the brake disc. After turning, the control panel controls the cylinder to drive the first U-shaped frame 13 to slide toward the mounting seat 12, and the sliding trajectory of the moving frame 14 is oblique, and the two moving frames 14 slide toward the brake disc. At the same time, they can approach each other. When the grinding piece 16 moves to the surface of the brake disc, the sliding trajectory of the movable frame 14 changes from oblique to straight, and the first U-shaped frame 13 stops moving after moving to the extreme position, and the grinding piece 16 can slide toward the brake disc and rest against the surface of the brake disc. Then the output end of the driving source 17 drives the rotating shaft to rotate, and the rotating shaft drives the grinding piece 16 to rotate around its axial direction through the limiting plate 18 to grind the brake disc, thereby facilitating the two grinding pieces 16 to grind the brake disc synchronously and to grind brake discs of different thicknesses synchronously.

[0038] refer to Figure 2 and Figure 3 As shown, a driving assembly 20 is installed on the first U-shaped frame 13 for making the two grinding members 16 slide synchronously and grind the brake disc synchronously, thereby improving the grinding efficiency of the brake disc.

[0039] The driving assembly 20 includes two end plates 27 fixed on the inner cavity wall of the machine tool 10, and the two end plates 27 are symmetrical with the first U-shaped frame 13 as the center. The end plates 27 are rotatably connected to one side of the first U-shaped frame 13 with two connecting frames 21, and the two connecting frames 21 are obliquely arranged on the end plates 27, and the two connecting frames 21 are symmetrical with the end plates 27 as the center. The interior of the connecting frame 21 is slidably connected with a first sliding column 22, and the first sliding column 22 is rotatably connected to the outer wall of the movable frame 14 at one end away from the end plate 27. The first sliding column 22 cooperates with the connecting frame 21 to guide the movable frame 14, so that the two movable frames 14 are close to each other, thereby synchronously grinding brake discs of different thicknesses.

[0040] A plurality of bending plates 24 are fixed on the inner cavity wall of the machine tool 10, and the number of the bending plates 24 is the same as the number of the connecting frames 21, and the plurality of connecting frames 21 correspond one to one to the bending plates 24. A first reset spring 23 is fixed between the side of the connecting frame 21 facing the bending plate 24 and the bent portion of the bending plate 24, for supporting the connecting frame 21, so as to facilitate the reset of the connecting frame 21. A slide rail 25 is fixed to the inner wall of the first U-shaped frame 13, and a slide plate 26 is fixed to the side of the movable frame 14 facing the slide rail 25, and the slide plate 26 is slidably connected to the inside of the slide rail 25.

[0041] When the first U-shaped frame 13 slides toward the mounting seat 12, the first sliding column 22 will slide along the trajectory of the connecting frame 21. At this time, the two moving frames 14 will approach each other, and the grinding piece 16 will slide toward the brake disc. When the grinding piece 16 moves to the surface of the brake disc, the connecting frame 21 changes from an inclined state to a parallel state, and the sliding trajectory of the grinding piece 16 also changes to a straight trajectory. When the first U-shaped frame 13 moves to the protrusion in the middle of the brake disc, the moving frame 14 stops moving, and the grinding piece 16 is against the surface of the brake disc, and the output end of the driving source 17 drives the rotating shaft to rotate, and the rotating shaft drives the grinding piece 16 to rotate through the limit plate 18, thereby grinding the surface of the brake.

[0042] refer to Figure 5 , Figure 6 and Figure 8 As shown, the movable frame 14 is provided with an adjustment assembly 30 for adjusting the angle of the connecting frame 21 , so as to facilitate the grinding piece 16 to grind brake discs of different thicknesses.

[0043] The adjusting assembly 30 includes a second U-shaped frame 31 arranged on the connecting frame 21, the inner wall of the second U-shaped frame 31 is rotatably connected to the first roller 32, the first roller 32 cooperates with the second U-shaped frame 31 to drive the connecting frame 21 to rotate an angle, thereby controlling the sliding trajectory of the first sliding column 22, a second return spring 33 is fixed between the second U-shaped frame 31 and the moving frame 14 on one side thereof facing the moving frame 14, for supporting the second U-shaped frame 31, thereby facilitating driving the second U-shaped frame 31 to reset, a third U-shaped frame 35 is arranged on one side of the second U-shaped frame 31, the inner wall of the third U-shaped frame 35 is rotatably connected to the second roller 36, and the outer surface of the second roller 36 contacts the surface of the corresponding connecting frame 21, the second roller 36 cooperates with the third U-shaped frame 35 to push the connecting frame 21 to rotate, thereby adjusting the sliding trajectory of the first sliding column 22, a connecting arm 34 is fixed between the second U-shaped frame 31 and the third U-shaped frame 35, for supporting the third U-shaped frame 35, thereby maintaining the stability of the third U-shaped frame 35 when sliding.

[0044] When the moving frame 14 moves to the surface of the brake disc, the first roller 32 first contacts the surface of the brake disc, and the grinding piece 16 is located above the brake disc, and the grinding piece 16 does not contact the brake disc. At this time, the first roller 32 drives the second U-shaped frame 31 to slide toward the moving frame 14 to a distance, and the second U-shaped frame 31 drives the third U-shaped frame 35 to slide toward the corresponding connecting frame 21 through the connecting arm 34. At this time, the connecting frame 21 will rotate to a certain angle and be in a parallel state, and the sliding trajectory of the first sliding column 22 is straight. When the moving frame 14 moves to the protrusion in the middle of the brake disc, the first roller 32 can drive the second U-shaped frame 31 to slide toward the corresponding moving frame 14 again. At the same time, the second U-shaped frame 31 drives the second roller 36 on the third U-shaped frame 35 to disengage from the connecting frame 21 through the connecting arm 34, and the outer ring 15 drives the grinding piece 16 to move down against the surface of the brake disc and grind the surface of the brake disc.

[0045] refer to Figure 5 , Figure 6 and Figure 8 As shown, a release assembly 40 is provided on the movable frame 14 for releasing the limit received by the second U-shaped frame 31 , thereby facilitating the control of the rotation angle of the connecting frame 21 .

[0046] The release assembly 40 includes a cylinder 41 fixed on the outer wall of the first U-shaped frame 13, and a second sliding column 42 is slidably connected inside the cylinder 41. A third return spring 43 is fixed between one end of the second sliding column 42 located inside the cylinder 41 and the inner wall of the cylinder 41, which is used to support the second sliding column 42, so as to facilitate the second sliding column 42 to reset. An L-shaped connecting plate 44 is fixed to the outer wall of the second sliding column 42, and a first arc block 45 is fixed to one side wall of the L-shaped connecting plate 44 facing the second U-shaped frame 31, and a second arc block 46 is fixed to one side wall of the second U-shaped frame 31 facing the L-shaped connecting plate 44, and the first arc block 45 cooperates with the second arc block 46 to limit the second U-shaped frame 31, so as to keep the second U-shaped frame 31 driving the first roller 32 to move stably on the brake disc surface, and a fixing plate 47 is fixed between the two L-shaped connecting plates 44 which are symmetrical up and down, so as to fix the L-shaped connecting plates 44, so as to keep the two L-shaped connecting plates 44 which are symmetrical up and down to slide synchronously.

[0047] Since the L-shaped connecting plate 44 located in the initial position can control the upward height of the second U-shaped frame 31 through the first arc block 45 and the second arc block 46, when the first roller 32 presses against the thicker brake disc surface, the first roller 32 drives the second U-shaped frame 31 to slide toward the corresponding connecting frame 21, and when the second arc block 46 of the second U-shaped frame 31 presses against the first arc block 45, the first arc block 45 limits the second arc block 46, which can keep the second roller 36 pushing the corresponding connecting frame 21 to rotate, thereby being parallel, so that the first sliding column 22 slides in a straight line along the trajectory of the connecting frame 21.

[0048] When the second sliding column 42 presses against the protrusion in the middle of the brake disc, the second sliding column 42 slides to the inside of the cylinder 41 and compresses the third return spring 43. At this time, the second roller 36 and the second U-shaped frame 31 slide out of the connecting frame 21, and the second roller 36 does not contact the connecting frame 21, and the first sliding column 22 slides to the extreme position inside the connecting frame 21, and at the same time, the first arc block 45 of the L-shaped connecting plate 44 is separated from the second arc block 46. At this time, the second U-shaped frame 31 and the first roller 32 slide again to the corresponding moving frame 14 to one end distance, thereby preventing the third U-shaped frame 35 and the second return spring 33 from being continuously squeezed by the brake disc to cause fatigue damage, and the outer ring 15 and the grinding piece 16 move down to the surface of the brake disc, so that the surface of the brake disc is ground by the grinding piece 16.

[0049] refer to Figure 5 , Figure 7 and Figure 8 As shown, a pushing assembly 50 is provided on the moving frame 14 for pushing the outer ring 15 downward, thereby facilitating the grinding of the brake disc by the grinding piece 16 .

[0050] The pushing assembly 50 includes a third arc block 53 fixed on the outer wall of the outer ring 15, which is used to push the outer ring 15 to slide toward the brake disc, so that the two grinding pieces 16 are close to each other to grind the brake disc. A top plate 51 is fixed between the two second sliding columns 42 on the moving frame 14, which is used to make the two connected second sliding columns 42 slide synchronously, so as to facilitate the grinding piece 16 to grind the brake disc. A second support plate 54 is fixed to the side of the top plate 51 facing the moving frame 14, and a fourth arc block 55 is fixed to the bottom of the second support plate 54. The second support plates 54 cooperate with the fourth arc block 55 to push the second arc block 46, so as to facilitate the outer ring 15 and the grinding piece 16 to slide toward the brake disc for grinding. A fixing ring 56 is fixed to the inner bottom wall of the first U-shaped frame 13, and the inner hole diameter of the fixing ring 56 is greater than the diameter of the grinding piece 16. A plurality of fourth reset springs 57 are fixed between the top of the fixing ring 56 and the bottom of the outer ring 15, and the plurality of fourth reset springs 57 are at equal distances from each other, so as to support the outer ring 15, so as to facilitate the reset of the outer ring 15.

[0051] When the second sliding column 42 slides toward the inside of the cylinder 41, the second sliding column 42 drives the second supporting plate 54 to slide toward the inner wall of the first U-shaped frame 13 through the top plate 51. At this time, the fourth arc block 55 of the second supporting plate 54 drives the third arc block 53 to press down, and the third arc block 53 drives the outer ring 15 to move downward, so that the grinding piece 16 is against the surface of the brake disc, thereby facilitating the grinding piece 16 to grind the surface of the brake disc.

[0052] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element 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", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0053] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A turning and grinding machine for high-precision and high-efficiency processing of brake discs, comprising a machine tool (10), a door (11) being provided on the machine tool (10), a turning tool and a mounting seat (12) being provided inside the machine tool (10), characterized in that: A first U-shaped frame (13) is installed inside the machine tool (10), and two movable frames (14) are installed on the first U-shaped frame (13). An outer ring (15) is provided inside the movable frame (14), and a grinding piece (16) is rotatably connected to the inner wall of the outer ring (15). When the first U-shaped frame (13) slides toward the mounting seat (12), the sliding trajectories of the two movable frames (14) are oblique and close to each other. When the movable frames (14) move to the surface of the brake disc, the sliding trajectories of the two movable frames (14) change from oblique to parallel. After the movable frames (14) slide to the extreme position, the grinding pieces (16) are close to each other and abut against the surface of the brake disc, so that brake discs of different thicknesses can be synchronously ground. A driving assembly (20) and an adjusting assembly (30) are provided on the moving frame (14); the driving assembly (20) cooperates with the adjusting assembly (30) to control the sliding track of the moving frame (14); The driving assembly (20) comprises two end plates (27) fixed on the inner cavity wall of the machine tool (10), and the two end plates (27) are symmetrical with the first U-shaped frame (13) as the center, the end plates (27) are rotatably connected to one side of the first U-shaped frame (13) with two connecting frames (21), and the two connecting frames (21) are arranged on the end plates (27) in an oblique shape, and the two connecting frames (21) are symmetrical with the end plates (27) as the center, the interior of the connecting frame (21) is slidably connected to a first sliding column (22), and the first sliding column (22) is rotatably connected to the outer wall of the movable frame (14) at one end away from the end plate (27), and the first sliding column (22) cooperates with the connecting frame (21) to guide the movable frame (14), so that the two movable frames (14) are close to each other, thereby synchronously grinding brake discs of different thicknesses; A plurality of bending plates (24) are fixed on the inner cavity wall of the machine tool (10), and the number of the bending plates (24) is the same as the number of the connecting frames (21), and the plurality of connecting frames (21) and the bending plates (24) correspond one to one, and a first reset spring (23) is fixed between a side of the connecting frame (21) facing the bending plate (24) and a bent portion of the bending plate (24) for supporting the connecting frame (21) so as to facilitate the reset of the connecting frame (21); The adjustment assembly (30) comprises a second U-shaped frame (31) arranged on the connection frame (21); the inner wall of the second U-shaped frame (31) is rotatably connected to a first roller (32); a second return spring (33) is fixed between a side of the second U-shaped frame (31) facing the moving frame (14) and the moving frame (14); a third U-shaped frame (35) is arranged on one side of the second U-shaped frame (31); the inner wall of the third U-shaped frame (35) is rotatably connected to a second roller (36), and the outer surface of the second roller (36) contacts a corresponding surface of the connection frame (21); and a connecting arm (34) is fixed between the second U-shaped frame (31) and the third U-shaped frame (35).

2. The high-precision and high-efficiency turning and grinding machine for brake disc processing according to claim 1 is characterized in that: The movable frame (14) is provided with a releasing assembly (40) for releasing the limit received by the second U-shaped frame (31), thereby facilitating the control of the rotation angle of the connecting frame (21).

3. The high-precision and high-efficiency turning and grinding machine for brake disc processing according to claim 2, characterized in that: The release assembly (40) comprises a cylinder (41) fixed on the outer wall of the first U-shaped frame (13); a second sliding column (42) is slidably connected to the interior of the cylinder (41); a third return spring (43) is fixed between one end of the second sliding column (42) located inside the cylinder (41) and the inner wall of the cylinder (41); and an L-shaped connecting plate (44) is fixed to the outer wall of the second sliding column (42).

4. The high-precision and high-efficiency turning and grinding machine for brake disc processing according to claim 3 is characterized in that: A first arc-shaped block (45) is fixed to a side wall of the L-shaped connecting plate (44) facing the second U-shaped frame (31), a second arc-shaped block (46) is fixed to a side wall of the second U-shaped frame (31) facing the L-shaped connecting plate (44), and a fixing plate (47) is fixed between the two L-shaped connecting plates (44) symmetrically disposed in the upper and lower parts.

5. The turning and grinding machine for high-precision and high-efficiency processing of brake discs according to claim 4 is characterized in that: The movable frame (14) is provided with a pushing assembly (50) for pushing the outer ring (15) downward, thereby facilitating the grinding of the brake disc by the grinding piece (16).

6. The high-precision and high-efficiency turning and grinding machine for brake disc processing according to claim 5, characterized in that: The pushing assembly (50) comprises a third arc-shaped block (53) fixed on the outer wall of the outer ring (15); a top plate (51) is fixed between two second sliding columns (42) on the moving frame (14); a second support plate (54) is fixed on the side of the top plate (51) facing the moving frame (14); a fourth arc-shaped block (55) is fixed on the bottom of the second support plate (54); a fixing ring (56) is fixed on the inner bottom wall of the first U-shaped frame (13); the inner hole diameter of the fixing ring (56) is greater than the diameter of the grinding piece (16); a plurality of fourth return springs (57) are fixed between the top of the fixing ring (56) and the bottom of the outer ring (15); and the plurality of fourth return springs (57) are equidistant from each other.

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