Positioning and clamping device for grinding outer circle of brake assembly

Abstract

The invention provides a positioning and clamping device for grinding an outer circle of a brake assembly, and relates to the field of brake outer circle grinding machines. The positioning and clamping device for grinding the outer circle of the brake assembly comprises a base and two clamping assemblies, the two clamping assemblies are distributed on the left side and the right side and oppositely and fixedly installed on the upper surface of the base, a positioning fastening assembly is installed on one clamping assembly, and an air blowing fastening assembly is installed on the other clamping assembly. And an outer circle grinding assembly is installed at the position, between the two clamping assemblies, of the base, the outer circle grinding assembly is correspondingly arranged between the positioning fastening assembly and the air blowing fastening assembly, air blowing equipment is further installed on the base, and one air outlet end of the air blowing equipment is installed on the air blowing fastening assembly. According to the positioning and clamping device for grinding the outer circle of the brake assembly, the safety during grinding is enhanced, a clamping gap cannot be generated during long-time machining, and the problem of burrs is reduced by arranging the outer circle grinding assembly.

Description

Technical Field

[0001] The invention relates to the field of brake external cylindrical grinding machines, in particular to a positioning clamping device used for grinding the external cylindrical surface of a brake assembly. Background Art

[0002] In the existing brake assembly grinding external cylindrical grinding machine, the positioning of the brake assembly on the grinding machine is achieved by a rigid positioning plate that cooperates with the inner hole of the brake assembly bottom plate. Due to the different inner holes of the workpiece, there will be a gap between the positioning plate and the workpiece. During the processing, the matching gap between the two will change. The workpiece needs to be fully clamped and the center of the circle is located to ensure the processing accuracy of the workpiece.

[0003] In addition, since the inner hole diameter of the brake assembly bottom plate has many specifications and sizes, it must be equipped with positioning plates of various specifications and sizes to match it, resulting in a large number of positioning fixtures. According to the design requirements of the machine tool fixture, the workpiece and the positioning plate must maintain a reasonable matching clearance so that the workpiece can be placed in the positioning plate. Due to the clearance between the workpiece and the positioning plate, there is a positioning error when the workpiece is positioned on the fixture, resulting in the grinding of the outer friction plate of the brake shoe cylinder failing to meet the quality requirements. The cylindrical tolerance value is in the range of 0.3 to 0.7mm, the total runout tolerance value is in the range of 0.3 to 0.6mm, and the perpendicularity tolerance value with the assembly reference surface is in the range of 0.3 to 0.5mm, which cannot meet customer requirements; The same brake is made of a variety of materials, including asbestos, carbon fiber, ceramics, metal, etc. Composite brake discs are more likely to have the problem of increased clearance between positioning holes during processing in the above-mentioned external cylindrical grinding method. Moreover, when processing composite brake discs on an external cylindrical grinder, due to the influence of debris, burrs are more likely to occur compared to metal brake discs. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a positioning and clamping device for grinding the outer circle of a brake assembly, which solves the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a positioning clamping device for grinding the outer circle of a brake assembly, comprising a base and a clamping assembly, wherein two clamping assemblies are provided, which are distributed on the left and right and relatively fixedly mounted on the upper surface of the base, wherein a positioning fastening assembly is mounted on one of the clamping assemblies, and an air blast fastening assembly is mounted on the other clamping assembly, an outer cylindrical grinding assembly is mounted between the two clamping assemblies on the base, the outer cylindrical grinding assembly corresponds to between the positioning fastening assembly and the air blast fastening assembly, an air blast device is also mounted on the base, one air outlet end of the air blast device is mounted on the air blast fastening assembly, and the other corresponds to the outer cylindrical grinding assembly; The cylindrical grinding assembly includes an electric cross slide, a U-shaped seat, a transmission assembly and a grinding wheel. The electric cross slide is fixedly mounted on the base, the U-shaped seat is fixed on the output end of the electric cross slide, the electric cross slide is used to drive the U-shaped seat to move along the XZ axis, the transmission assembly is installed in the U-shaped seat, there are two grinding wheels, both are rotatably mounted on the side of the U-shaped seat, and the transmission assembly is used to drive the two grinding wheels to rotate in one direction.

[0006] Preferably, the transmission assembly includes a motor A, a worm, a worm wheel, a large gear and a small gear. There are two small gears, the large gear is located between the two small gears and meshes with each other, the large gear and the small gear are both located in a U-shaped seat and are rotatably connected thereto, the worm wheel is coaxially connected to the large gear, the worm is located at the bottom of the worm wheel and meshes therewith, the motor A is fixed inside the U-shaped seat, the worm is connected to the output shaft of the motor A, the worm is rotatably connected to the U-shaped seat, and the two grinding wheels are respectively mounted on the main shafts of the two small gears. The grinding wheel is an "I"-shaped structure, and the outer ring of the grinding wheel is provided with a slot.

[0007] Preferably, the clamping assembly includes an elevated support, a hollow sliding rod, a hydraulic cylinder and a fixed plate. The elevated support is fixed on the base. Two hollow sliding rods are provided, one end of each of which is fixed to the elevated support. Two sliding sleeves are fixedly installed on the bottom of the fixed plate. The sliding sleeves are respectively sleeved on the two hollow sliding rods and slidably connected to the two hollow sliding rods. The fixed end of the hydraulic cylinder is fixed to the elevated support, and the movable end thereof is fixedly connected to the fixed plate. The positioning fastening assembly and the air blast fastening assembly are both rotatably installed on the fixed plate.

[0008] Preferably, the positioning and fastening assembly includes a coaxial flywheel, a damping rod and a protective chuck A. The coaxial flywheel is mounted on the axis of the fixed disk and is rotatably connected thereto. A plurality of damping rods are provided and are located between the coaxial flywheel and the protective chuck A. The fixed end and movable end of the damping rod are fixed to the coaxial flywheel and the protective chuck A, respectively.

[0009] Preferably, the air blast fastening assembly includes a concentric rotating shaft, a conical tube and a protective chuck B. The concentric rotating shaft is fixed to the fixed disk. The concentric rotating shaft is a two-section structure. The two ends of the concentric rotating shaft rotate relative to each other. A motor B is fixedly mounted on one section to drive the other section to rotate. The protective chuck B is fixed on the end of the concentric rotating shaft away from the fixed disk. The conical tube is fixed on the side of the protective chuck B away from the concentric rotating shaft, and its internal cavity passes through the protective chuck B and is connected to the interior of the concentric rotating shaft, and is connected to the air outlet end of the air blasting equipment. A number of air jet holes are provided on the outside of the conical tube.

[0010] Preferably, the protective chuck A comprises a chuck 1 and a slide 1, and three slides are provided, wherein one slide 1 is slidably connected to the chuck 1, and two movable plates 1 are slidably provided on the other side of the chuck 1, and the two movable plates 1 can slide along the arc direction of the chuck 1, and the other two slides 1 are respectively installed on the two movable plates 1 and slidably connected thereto, and a sleeve is fixedly installed on the side of the slide 1 away from the chuck 1.

[0011] Preferably, the protective chuck B includes a chuck 2 and a slide plate 2. Three slide plates 2 are provided, one of which is slidably connected to the chuck 2. The other two sides of the chuck 2 are slidably provided with two movable plates 2. The two movable plates 2 can slide along the arc direction of the chuck 2. The other two slide plates 2 are respectively installed on the two movable plates 2 and are slidably connected thereto. Conical rods are fixedly installed on the two sides of the slide plate 2 away from the chuck 2, and the conical rods cooperate with the sleeve.

[0012] Preferably, the concentric rotating shaft is a hollow structure, one end of the conical tube is a closed structure, the internal cavity of the conical tube passes through the second chuck and then communicates with the concentric rotating shaft, and the internal cavity of the concentric rotating shaft passes through the fixed disk and then connects with the air outlet end of the blowing device.

[0013] Preferably, the other two air outlet ends of the air blowing device respectively correspond to the two grinding wheels after passing through the fixed plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The positioning clamping device for grinding the outer circle of the brake assembly sets an outer circle grinding component. When the brake rotates at a high speed, the electric cross slide is prompted to make the grinding wheel approach the outer circle of the brake, and then the motor A is controlled to rotate, so that the worm gear drives the large gear and two small gears to rotate, so that the grinding wheel rotates slowly. The grinding wheel can change the rotation direction so that it can be the same as the rotation direction of the brake. When facing a composite brake disc, the speed difference between the two is slowly increased to achieve feed, reduce the problem of burrs, and the probability of the edge of the brake disc not cracking is low. When the brake and the grinding wheel are in opposite directions, the maximum cutting speed can be achieved. The I-shaped grinding wheel can remove the burrs generated on the edge of the brake when it moves horizontally.

[0015] 2. The positioning clamping device for grinding the outer circle of the brake assembly is provided with an air blowing device, which can realize air blowing. When the grinding wheel is grinding the outer circle, the air flow can quickly take away the debris at the grinding site to avoid the problem of local heating. Moreover, when the cone tube clamps the brake disc, the air flow it ejects will also act on the vicinity of the brake disc, reducing the temperature during processing and avoiding damage to the composite brake disc when grinding the outer circle.

[0016] 3. The positioning clamping device for grinding the outer circle of the brake assembly is provided with a clamping component, a positioning fastening component and an air blast fastening component. The brake can be inserted into the tapered tube, and the inner hole of the brake is moved along the tapered tube until it is completely restricted by the tapered tube, so that the tapered rod is inserted into the positioning hole of the brake, and then the hydraulic cylinder is extended to make the positioning fastening component close to the brake. At this time, the chuck one is close to the chuck two, so that the brake is restricted. After it is pressed, the damping rod will shrink, and the sleeve will cooperate with the tapered rod and the brake is doubly restricted. When it rotates at high speed, the tapered rod and the sleeve will directly transmit power, which enhances the safety during grinding. There will be no clamping gap during long-term processing. Moreover, the positions of the tapered rod and the sleeve are adjustable, so it can be adapted to a variety of brake assemblies. Moreover, the damping provides buffering during clamping to prevent the brake disc from being clamped. The inner hole and the positioning hole of the brake transmit power. When facing a composite brake disc, the problem of strong pressure in the prior art causing damage to the brake disc will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a top view of the structure of the present invention; Figure 3 It is a front view of the structure of the present invention; Figure 4 It is a structural schematic diagram of the clamping assembly of the present invention; Figure 5 It is a connection diagram of the clamping assembly and the positioning and fastening assembly of the present invention; Figure 6 For the present invention Figure 5 A magnified view of the local structure in Figure 7 It is a structural diagram of the air blast fastening assembly of the present invention; Figure 8 It is a connection diagram of the external cylindrical grinding assembly and the clamping assembly of the present invention; Fig. 9 For the present invention Figure 8 A magnified view of the structure in ; Fig.10 It is a structural diagram of the external cylindrical grinding assembly of the present invention.

[0018] In the figure: 1, base; 2, clamping assembly; 201, heightened support; 202, hollow slide rod; 203, hydraulic cylinder; 204, fixed plate; 205, sliding sleeve; 3, positioning and fastening assembly; 301, coaxial flywheel; 302, damping rod; 303, protective chuck A; 3031, chuck 1; 3032, slide plate 1; 3033, movable plate 1; 3034, sleeve; 4, blast fastening assembly; 401, concentric shaft; 402, cone tube; 403, protective chuck B; 4031, chuck 2; 4032, slide plate 2; 4033, movable plate 2; 4034, taper rod; 404, motor B; 405, air jet hole; 5, cylindrical grinding assembly; 501, electric cross slide; 502, U-shaped seat; 503, transmission assembly; 5031, motor A; 5032, worm; 5033, worm wheel; 5034, large gear; 5035, small gear; 504, grinding wheel; 6, air blowing equipment. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0021] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0023] like Figure 1-Figure 10 As shown, a positioning clamping device for grinding the outer circle of a brake assembly comprises a base 1 and a clamping assembly 2, wherein the clamping assembly 2 is provided with two left and right distributed components, which are relatively fixedly mounted on the upper surface of the base 1, wherein a positioning fastening assembly 3 is mounted on one of the clamping assemblies 2, and an air blast fastening assembly 4 is mounted on the other clamping assembly 2, and an outer cylindrical grinding assembly 5 is mounted between the two clamping assemblies 2 on the base 1, and the outer cylindrical grinding assembly 5 corresponds to between the positioning fastening assembly 3 and the air blast fastening assembly 4, and an air blast device 6 is also mounted on the base 1, and one air outlet end of the air blast device 6 is mounted on the air blast fastening assembly 4, and the other air outlet end corresponds to the outer cylindrical grinding assembly 5; The cylindrical grinding assembly 5 includes an electric cross slide 501, a U-shaped seat 502, a transmission assembly 503 and a grinding wheel 504. The electric cross slide 501 is fixedly mounted on the base 1, the U-shaped seat 502 is fixed on the output end of the electric cross slide 501, the electric cross slide 501 is used to drive the U-shaped seat 502 to move along the XZ axis, the transmission assembly 503 is installed in the U-shaped seat 502, and there are two grinding wheels 504, both of which are rotatably mounted on the side of the U-shaped seat 502, and the transmission assembly 503 is used to drive the two grinding wheels 504 to rotate in one direction.

[0024] The blowing device 6 is an air compressor, which also includes various required air valves, can automatically control exhaust or manually exhaust, and can store high-pressure gas.

[0025] The electric cross slide 501 refers to a combined slide formed by two groups of linear slides in the X-axis direction and the Z-axis direction. A dust cover is provided in the Z-axis direction, so that it can drive the XZ-axis movement. Therefore, the U-shaped seat 502 can move horizontally and vertically relative to the outer circle of the brake disc.

[0026] The transmission assembly 503 includes a motor A5031, a worm 5032, a worm wheel 5033, a large gear 5034 and a small gear 5035. There are two small gears 5035. The large gear 5034 is located between the two small gears 5035 and meshes with each other. The large gear 5034 and the small gear 5035 are both located in the U-shaped seat 502 and are rotatably connected thereto. The worm wheel 5033 is coaxially connected to the large gear 5034. The worm 5032 is located at the bottom of the worm wheel 5033 and meshes therewith. The motor A5031 is fixed inside the U-shaped seat 502. The worm 5032 is connected to the output shaft of the motor A5031. The worm 5032 is rotatably connected to the U-shaped seat 502. The two grinding wheels 504 are respectively mounted on the main shafts of the two small gears 5035. The grinding wheel 504 is an "I"-shaped structure, and the outer ring of the grinding wheel 504 is provided with a slot.

[0027] When the worm 5032 drives the large gear 5034 to rotate, the two small gears 5035 can rotate in the same direction, and the two small gears 5035 are on an arc. The grinding wheel 504 is a structure in the prior art, and its external slot cooperates with the blowing position of the air blowing device 6 to quickly take away the debris dropped during processing. The grinding wheel 504 is outside the U-shaped seat 502, and a transmission shaft of a certain length is used to transmit power, so there will be no radial runout, which can prevent the transmission component 503 from affecting the processing of the brake disc.

[0028] The clamping assembly 2 includes an elevated support 201, a hollow slide rod 202, a hydraulic cylinder 203 and a fixed plate 204. The elevated support 201 is fixed on the base 1. There are two hollow slide rods 202, one end of which is fixed to the elevated support 201. Two sliding sleeves 205 are fixedly installed on the bottom of the fixed plate 204. The sliding sleeves 205 are respectively sleeved on the two hollow slide rods 202 and slidably connected thereto. The fixed end of the hydraulic cylinder 203 is fixed to the elevated support 201, and the movable end thereof is fixedly connected to the fixed plate 204. The positioning and fastening assembly 3 and the air blast fastening assembly 4 are both rotatably installed on the fixed plate 204.

[0029] An extension plate is fixedly installed at the bottom of the fixed plate 204, and the extension plate is used to increase the height of the fixed plate 204, and can also be used when facing a brake disc with a larger diameter. The sliding sleeve 205 can be installed on the extension plate, and the sliding sleeve 205 cooperates with the hollow sliding rod 202, and the gap between the two can be ignored.

[0030] The positioning and fastening assembly 3 includes a coaxial flywheel 301, a damping rod 302 and a protective chuck A303. The coaxial flywheel 301 is mounted on the axis of the fixed disk 204 and is rotatably connected thereto. A plurality of damping rods 302 are provided and are located between the coaxial flywheel 301 and the protective chuck A303. The fixed end and the movable end of the damping rod 302 are respectively fixed to the coaxial flywheel 301 and the protective chuck A303.

[0031] The damping rod 302 is provided with a spring inside, which will shrink after being compressed and can store force, and the coaxial flywheel 301 is connected with the fixed disk 204 by a bearing. After the damping rod 302 is compressed by pressure, the rotation of the coaxial flywheel 301 and the fixed disk 204 is not affected.

[0032] The air blast fastening assembly 4 includes a concentric shaft 401, a conical tube 402 and a protective chuck B403. The concentric shaft 401 is fixed to the fixed disk 204. The concentric shaft 401 is a two-section structure. The two ends of the concentric shaft 401 rotate relative to each other. A motor B404 is fixedly installed on one section to drive the other section to rotate. The protective chuck B403 is fixed on the end of the concentric shaft 401 away from the fixed disk 204. The conical tube 402 is fixed on the side of the protective chuck B403 away from the concentric shaft 401, and its internal cavity passes through the protective chuck B403 and is connected to the inside of the concentric shaft 401, and is connected to the air outlet end of the air blast device 6. A number of jet holes 405 are provided on the outside of the conical tube 402.

[0033] The protective chuck A303 and the protective chuck are annular structures as a whole. The cone tube 402 can be inserted into the inner ring of the protective chuck A303. A bearing is installed between the two-section structure of the concentric shaft 401. The motor B404 uses gear transmission to drive the two ends of the concentric shaft 401 to rotate relative to each other.

[0034] The protective chuck B403 includes a chuck 3031 and a slide 3032. There are three slides 3032, one of which is slidably connected to the chuck 3031. The other side of the chuck 3031 is slidably provided with two movable plates 3033. The two movable plates 3033 can slide along the arc direction of the chuck 3031. The other two slides 3032 are respectively mounted on the two movable plates 3033 and slidably connected thereto. A sleeve 3034 is fixedly mounted on one side of the slide 3032 away from the chuck 3031.

[0035] The protective chuck A303 includes a chuck 2 4031 and a slide 2 4032. There are three slides 2 4032, one of which is slidably connected to the chuck 2 4031. The other side of the chuck 2 4031 has two movable plates 2 4033 slidingly thereon. The two movable plates 2 4033 can slide along the arc direction of the chuck 2 4031. The other two slides 2 4032 are respectively mounted on the two movable plates 2 4033 and slidably connected thereto. A cone rod 4034 is fixedly mounted on one side of the slide 2 4032 away from the chuck 2 4031, and the cone rod 4034 cooperates with the sleeve 3034.

[0036] A boss is provided at the center of one side of chuck 1 3031 near chuck 2 4031 for supporting the brake disc. Cone rod 4034 is connected to slide plate 2 4032 by threading, and can be disassembled and replaced with specifications of different lengths. Sleeve 3034 has a certain depth. After selecting cone rod 4034 according to actual conditions, brake discs of more specifications can be positioned. Sleeve 3034 and cone rod 4034 do not provide clamping force, but only provide power in the rotation direction during rotation. Therefore, when the brake disc rotates at high speed, there is no need for hydraulic cylinder 203 to clamp it with great force, and there will be no problems of clamping and deformation when facing a composite brake disc.

[0037] The concentric rotating shaft 401 is a hollow structure, one end of the conical tube 402 is a closed structure, the internal cavity of the conical tube 402 passes through the chuck 2 4031 and then communicates with the concentric rotating shaft 401, and the internal cavity of the concentric rotating shaft 401 passes through the fixed disk 204 and then connects to the air outlet end of the blowing device 6.

[0038] When the air blowing device 6 exhausts gas, the gas can enter the cone 402 and then be ejected from the air injection hole 405 .

[0039] The other two air outlet ends of the air blowing device 6 pass through the fixed plate 204 and correspond to the two grinding wheels 504 respectively.

[0040] The high-pressure gas can take away the processing debris at the groove of the grinding wheel 504, and the gas outlet end of the blowing device 6 is connected with a hose.

[0041] When in use, the brake disc is put on the tapered tube 402, and then the inner hole of the brake disc is moved along the tapered tube 402 until it is completely restricted by the tapered tube 402, and then one of the tapered rods 4034 is inserted into the positioning hole of the brake, and then the remaining tapered rods 4034 are adjusted to the position and then inserted into other positioning holes, and the hydraulic cylinder 203 is controlled to extend to make the positioning and fastening assembly 3 close to the brake. At this time, the chuck 1 3031 is close to the chuck 2 4031, and the brake is slowly restricted. After it is tightened, the damping rod 302 will contract for a period of time to accumulate force, and the sleeve 3034 will cooperate with the tapered rod 4034 so that the brake is doubly restricted. When it rotates at high speed, the tapered rod 4034 and the sleeve 3034 will directly transmit power, and there will be no clamping gap during long-term processing. When clamping, the damping can provide buffering to prevent the brake disc from being clamped. When the motor B404 rotates, it can drive the brake disc to rotate at high speed.

[0042] When the brake rotates at high speed, the electric cross slide 501 is prompted to make the grinding wheel 504 approach the outer circle of the brake, and then the motor A5031 is controlled to rotate, so that the worm gear 5033 drives the large gear 5034 and the two small gears 5035 to rotate, so that the grinding wheel 504 rotates slowly. The grinding wheel 504 can change the rotation direction so that it can be the same as the rotation direction of the brake. When facing a composite brake disc, the speed difference between the two is slowly increased to achieve feed, reduce the problem of burrs, and the probability of the edge of the brake disc cracking is low. When the brake and the grinding wheel 504 are in opposite directions, the maximum cutting speed can be achieved. During processing, the air blowing device 6 can blow air automatically. When the grinding wheel 504 grinds the outer circle, the air flow can quickly take away the debris at the grinding site to avoid local heating. Moreover, when the conical tube 402 clamps the brake disc, the air flow it ejects will also act on the vicinity of the brake disc to reduce the temperature during processing.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0044] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning clamping device for grinding the outer circle of a brake assembly, comprising a base (1) and a clamping assembly (2), characterized in that: The clamping assemblies (2) are provided with two clamping assemblies (2) distributed on the left and right and relatively fixedly mounted on the upper surface of the base (1); a positioning fastening assembly (3) is mounted on one of the clamping assemblies (2); an air blast fastening assembly (4) is mounted on the other clamping assembly (2); an external cylindrical grinding assembly (5) is mounted on the base (1) between the two clamping assemblies (2); the external cylindrical grinding assembly (5) corresponds to between the positioning fastening assembly (3) and the air blast fastening assembly (4); an air blast device (6) is also mounted on the base (1); one air outlet end of the air blast device (6) is mounted on the air blast fastening assembly (4), and the other air outlet end corresponds to the external cylindrical grinding assembly (5); The cylindrical grinding assembly (5) comprises an electric cross slide (501), a U-shaped seat (502), a transmission assembly (503) and a grinding wheel (504); the electric cross slide (501) is fixedly mounted on a base (1); the U-shaped seat (502) is fixed on an output end of the electric cross slide (501); the electric cross slide (501) is used to drive the U-shaped seat (502) to move along an XZ axis; the transmission assembly (503) is mounted in the U-shaped seat (502); two grinding wheels (504) are provided and are both rotatably mounted on a side surface of the U-shaped seat (502); and the transmission assembly (503) is used to drive the two grinding wheels (504) to rotate in one direction.

2. A positioning and clamping device for grinding the outer circle of a brake assembly according to claim 1, characterized in that: The transmission assembly (503) comprises a motor A (5031), a worm (5032), a worm wheel (5033), a large gear (5034) and a small gear (5035), wherein two small gears (5035) are provided, and the large gear (5034) is located between the two small gears (5035) and meshes with each other. The large gear (5034) and the small gear (5035) are both located in the U-shaped seat (502) and are rotatably connected thereto. The worm wheel (5033) and the large gear (5034) are connected to each other. ) are coaxially connected, the worm (5032) is arranged at the bottom of the worm wheel (5033) and meshes with it, the motor A (5031) is fixed inside the U-shaped seat (502), the worm (5032) is connected to the output shaft of the motor A (5031), the worm (5032) is rotatably connected to the U-shaped seat (502), and the two grinding wheels (504) are respectively mounted on the main shafts of the two pinions (5035), the grinding wheel (504) is an "I"-shaped structure, and the outer ring of the grinding wheel (504) is provided with a slot.

3. A positioning and clamping device for grinding the outer circle of a brake assembly according to claim 1, characterized in that: The clamping assembly (2) comprises an elevated support (201), a hollow slide bar (202), a hydraulic cylinder (203) and a fixed plate (204); the elevated support (201) is fixed on the base (1); two hollow slide bars (202) are provided, one end of each of which is fixed to the elevated support (201); two sliding sleeves (205) are fixedly mounted on the bottom of the fixed plate (204); the sliding sleeves (205) are respectively sleeved on the two hollow slide bars (202) and slidably connected thereto; the fixed end of the hydraulic cylinder (203) is fixed to the elevated support (201), and the movable end thereof is fixedly connected to the fixed plate (204); the positioning fastening assembly (3) and the air blast fastening assembly (4) are both rotatably mounted on the fixed plate (204).

4. A positioning and clamping device for grinding the outer circle of a brake assembly according to claim 3, characterized in that: The positioning and fastening assembly (3) comprises a coaxial flywheel (301), a damping rod (302) and a protective chuck A (303); the coaxial flywheel (301) is mounted on the axis of a fixed disk (204) and is rotatably connected thereto; a plurality of damping rods (302) are provided and are located between the coaxial flywheel (301) and the protective chuck A (303); a fixed end and a movable end of the damping rod (302) are respectively fixed to the coaxial flywheel (301) and the protective chuck A (303).

5. A positioning and clamping device for grinding the outer circle of a brake assembly according to claim 4, characterized in that: The air blast fastening assembly (4) comprises a concentric rotating shaft (401), a conical tube (402) and a protective chuck B (403). The concentric rotating shaft (401) is fixed to the fixed disk (204). The concentric rotating shaft (401) is a two-section structure. The two ends of the concentric rotating shaft (401) rotate relative to each other. A motor B (404) is fixedly mounted on one section for driving the other section to rotate. The protective chuck B (403) is fixed to one end of the concentric rotating shaft (401) away from the fixed disk (204). The conical tube (402) is fixed to one side of the protective chuck B (403) away from the concentric rotating shaft (401). The internal cavity of the concentric rotating shaft (401) passes through the protective chuck B (403) and is connected to the inside of the concentric rotating shaft (401). The conical tube (402) is provided with a plurality of air jet holes (405) on the outside.

6. A positioning and clamping device for grinding the outer circle of a brake assembly according to claim 5, characterized in that: The protective chuck A (303) comprises a chuck 1 (3031) and a slide plate 1 (3032). Three slide plates 1 (3032) are provided, wherein one slide plate 1 (3032) is slidably connected to the chuck 1 (3031). Two movable plates 1 (3033) are slidably provided on the other side of the chuck 1 (3031). The two movable plates 1 (3033) can slide along the arc direction of the chuck 1 (3031). The other two slide plates 1 (3032) are respectively mounted on the two movable plates 1 (3033) and slidably connected thereto. A sleeve (3034) is fixedly installed on the side of the slide plate 1 (3032) away from the chuck 1 (3031).

7. A positioning and clamping device for grinding the outer circle of a brake assembly according to claim 6, characterized in that: The protective chuck B (403) comprises a chuck 2 (4031) and a slide 2 (4032). The slide 2 (4032) is provided with three slides, one of which is slidably connected to the chuck 2 (4031). The other side of the chuck 2 (4031) is slidably provided with two movable plates 2 (4033). The two movable plates 2 (4033) can slide along the arc direction of the chuck 2 (4031). The other two slides 2 (4032) are respectively mounted on the two movable plates 2 (4033) and slidably connected thereto. A conical rod (4034) is fixedly mounted on one side of the slide 2 (4032) away from the chuck 2 (4031). The conical rod (4034) cooperates with the sleeve (3034).

8. A positioning and clamping device for grinding the outer circle of a brake assembly according to claim 7, characterized in that: The concentric rotating shaft (401) is a hollow structure, one end of the conical tube (402) is a closed structure, the internal cavity of the conical tube (402) passes through the second chuck (4031) and is connected to the inside of the concentric rotating shaft (401), and the internal cavity of the concentric rotating shaft (401) passes through the fixed disk (204) and is connected to the air outlet end of the air blowing device (6).

9. A positioning and clamping device for grinding the outer circle of a brake assembly according to claim 1, characterized in that: The other two air outlet ends of the air blowing device (6) pass through the fixed plate (204) and correspond to two grinding wheels (504) respectively.

Images