Automobile brake disc machining and positioning tool

Abstract

The invention discloses an automobile brake disc machining and positioning tool, which belongs to the technical field of machining and positioning and comprises a placing table, a groove is formed in the middle of the placing table, a plurality of arc-shaped grooves are formed in the inner wall of the groove, moving blocks are slidably mounted in the arc-shaped grooves, and piston grooves are formed in the ends, close to the center of the groove, of the moving blocks. A fixing assembly is installed on the side, close to the center of the groove, of the moving block and used for fixing the brake disc, the fixing assembly comprises a piston rod slidably installed in the piston groove, a fixing rod is fixedly installed on one side of the upper end of the piston rod, and an extrusion block is rotatably installed at the end, away from the center of the groove, of the upper side of the fixing rod; according to the brake disc machining device, different parts of a brake disc can be fixed through cooperation of the piston rod, the fixing rod and the extrusion block, positioning equipment does not need to be replaced after the brake disc is turned over, the operation steps are reduced, and the machining efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of machining positioning, and more specifically, to a machining positioning tooling for automobile brake discs. Background Art

[0002] Machining positioning of brake discs refers to the process of precisely controlling the position of brake discs during the machining process. This process requires the use of positioning tooling for auxiliary positioning to ensure that the brake discs can remain in a stable position on the machining machine during each machining stage (such as turning, milling, drilling, etc.), reducing errors and ensuring the quality and safety of the machined brake discs.

[0003] However, when the traditional positioning tooling fixes the brake disc, since both sides of the brake disc need to be processed such as polished, it is necessary to turn the brake disc over on the workbench and then fix it again. Since the center of one side of the brake disc is concave and the other side is convex, it is necessary to replace the positioning components to fix the center of the brake disc after the brake disc is turned over, which is troublesome to operate. Continuously replacing the positioning tooling to fix the brake disc in multiple machining steps will affect the machining efficiency. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a machining positioning tooling for automobile brake discs.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A machining positioning tooling for automobile brake discs, including a placement table. A groove is provided in the middle of the placement table. A plurality of arc-shaped grooves are provided on the inner wall of the groove. A moving block is slidably installed inside the arc-shaped groove. A piston groove is provided at one end of the moving block close to the center of the groove, and a fixing component is installed on one side of the moving block close to the center of the groove for fixing the brake disc. The fixing component includes a piston rod slidably installed inside the piston groove. A fixing rod is fixedly installed on one side of the upper end of the piston rod. An extrusion block is rotatably installed at one end of the fixing rod away from the center of the groove. A friction pad is fixedly installed at one end of the fixing rod close to the center of the groove, and a friction pad is also fixedly installed at one end of the extrusion block away from the fixing rod.

[0007] Further, a compression spring is fixedly installed at one end of the moving block, and the other end of the compression spring is fixedly connected to the inner wall of the arc-shaped groove.

[0008] Further, a feed groove is provided at one end of the piston rod away from the fixing rod, and a discharge groove is provided at a position corresponding to the end of the feed groove of the piston rod. The discharge groove has an "L" - shaped structure, and the middle of the vertical part of the feed groove is communicated with the discharge groove.

[0009] Further, an adjusting block is rotatably installed inside the piston rod. A transition groove is formed in the middle of the adjusting block, and the transition groove is in an "L" shape. The horizontal part of the transition groove is communicated with the inside of the feed groove.

[0010] Further, a rotating rod is fixedly installed at one end of the adjusting block away from the feed groove. A gear is fixedly installed at the end of the rotating rod away from the adjusting block. A rack is arranged on the upper side of the piston rod. The rack is used to drive the gear to rotate. A return spring is fixedly installed at the lower end of the rack. The other end of the return spring is fixedly connected to the inside of the piston rod. And the upper end of the rack is in pressing contact with the lower side of the extrusion block.

[0011] Further, an infusion tube is fixedly installed at the position of the piston rod corresponding to the feed groove. The other end of the infusion tube is connected to the hydraulic equipment on the machine tool. The infusion tube is used to transport the hydraulic oil in the hydraulic equipment into the feed groove.

[0012] Further, a contraction groove is formed at one end of the arc-shaped groove. A locking rod is slidably installed inside the contraction groove. A locking hole is formed at the position of the moving block corresponding to the locking rod. The locking rod is inserted and matched with the locking hole. A tension spring is fixedly installed at the end of the locking rod away from the locking hole. The other end of the tension spring is fixedly connected to the inner wall of the contraction groove.

[0013] Further, a piston cavity is formed at the lower end of the middle of the groove. A top block is slidably installed inside the piston cavity. The top block squeezes the air in the piston cavity. A support spring is fixedly installed at the lower end of the top block. The side wall of the piston cavity is communicated with the inside of the contraction groove. The air in the piston cavity enters the contraction groove to squeeze the locking rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) By arranging the piston rod in cooperation with the fixed rod and the extrusion block, the present invention can fix different parts of the brake disc. After the brake disc is turned over, there is no need to replace the positioning device, reducing the operation steps and improving the processing efficiency.

[0015] (2) By arranging the adjusting block in cooperation with the gear, the rack and the rotating rod, the present invention can automatically change the fixing method according to the orientation of the brake disc. Only need to place the brake disc on the placing table and then provide pressure into the piston groove to automatically complete the fixing operation. It is simple and convenient to use without secondary adjustment by the staff.

[0016] (3) By arranging the locking rod and the locking hole, the present invention can fix the moving block in cooperation with the top block and the piston cavity when drilling the brake disc, avoiding the movement of the moving block during drilling, which may cause the position of the brake disc to change and affect the size of the drilled hole. Description of the Drawings

[0017] Figure 1Schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the internal structure of the placement table of the present invention; Figure 3 Schematic diagram of the internal structure of the piston chamber and the partial structure of the top block of the present invention; Figure 4 Schematic diagram of the internal structure of the piston groove and the partial structure of the locking rod of the present invention; Figure 5 Schematic diagram of the partial structure of the piston groove and the locking hole of the present invention; Figure 6 Schematic diagram of the partial structure of the feed groove and the discharge groove of the present invention; Figure 7 Schematic diagram of the partial structure of the return spring and the transition groove of the present invention.

[0018] Explanation of the reference numerals in the figure: 1. Placement table; 101. Groove; 102. Arc-shaped groove; 103. Moving block; 104. Piston groove; 105. Compression spring; 106. Locking hole; 107. Piston chamber; 108. Top block; 109. Support spring; 2. Fixed component; 201. Piston rod; 202. Fixed rod; 203. Extrusion block; 204. Friction pad; 205. Feed groove; 206. Discharge groove; 207. Infusion tube; 3. Adjusting block; 301. Transition groove; 302. Rotating rod; 303. Gear; 304. Rack; 305. Return spring; 4. Shrinkage groove; 401. Locking rod; 402. Tensile spring. Specific implementation manner

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1 to 7 , an automobile brake disc processing positioning tooling, including a placement table 1. A groove 101 is opened in the middle of the placement table 1. A plurality of arc-shaped grooves 102 are opened on the inner wall of the groove 101. A moving block 103 is slidably installed inside the arc-shaped groove 102. A piston groove 104 is opened at one end of the moving block 103 close to the center of the groove 101. And a fixed component 2 is installed on one side of the moving block 103 close to the center of the groove 101. The fixed component 2 is used to fix the brake disc; The fixing component 2 includes a piston rod 201 slidably installed inside the piston groove 104. One side of the upper end of the piston rod 201 is fixedly installed with a fixing rod 202. One end of the upper side of the fixing rod 202 away from the center of the groove 101 is rotatably installed with a pressing block 203. The fixing rod 202 can block the pressing block 203, thereby restricting the rotation angle of the pressing block 203. One end of the fixing rod 202 close to the center of the groove 101 is fixedly installed with a friction pad 204, and one end of the pressing block 203 away from the fixing rod 202 is also fixedly installed with a friction pad 204. The friction pad 204 is used to increase the friction force between the pressing block 203, the fixing rod 202 and the brake disc.

[0021] By adopting the above technical solution, when the brake disc needs to be polished or buffed, the brake disc is placed on the placing table 1. Among them, when the convex part on the brake disc is placed inside the groove 101, the piston rod 201 is moved closer to the central part of the groove 101. At this time, the piston rod 201 can drive the fixing rod 202 fixedly connected thereto to move. After the fixing rod 202 moves, it can fix the convex part of the brake disc located inside the groove 101. When the concave part on the brake disc corresponds to the groove 101, the piston rod 201 is moved to the side away from the center of the groove 101. At this time, the piston rod 201 can drive the pressing block 203 to move through the fixing rod 202. After the pressing block 203 moves, it can press the inner wall of the concave part on the brake disc, so that the brake disc is fixed through the friction force.

[0022] One end of the piston rod 201 away from the fixing rod 202 is provided with a feeding groove 205, and a discharging groove 206 is provided at a position corresponding to the end of the feeding groove 205 on the piston rod 201. The discharging groove 206 is in an "L" - shaped structure, and the middle part of the vertical part of the feeding groove 205 is communicated with the discharging groove 206; An adjusting block 3 is rotatably installed inside the piston rod 201. A transition groove 301 is provided in the middle of the adjusting block 3, and the transition groove 301 is in an "L" - shaped structure. The horizontal part of the transition groove 301 is communicated with the inside of the feeding groove 205; One end of the adjusting block 3 away from the feeding groove 205 is fixedly installed with a rotating rod 302. One end of the rotating rod 302 away from the adjusting block 3 is fixedly installed with a gear 303. A rack 304 is provided on the upper side of the piston rod 201. The rack 304 is used to drive the gear 303 to rotate. The lower end of the rack 304 is fixedly installed with a return spring 305. The return spring 305 can press the lower end of the rack 304, so that it rises to the initial position when not subjected to the pressure of the pressing block 203. The other end of the return spring 305 is fixedly connected with the inside of the piston rod 201, and the upper end of the rack 304 is in pressing contact with the lower side of the pressing block 203; A liquid delivery pipe 207 is fixedly installed at the position of the piston rod 201 corresponding to the feed trough 205. The other end of the liquid delivery pipe 207 is connected to a hydraulic device on the machine tool. The liquid delivery pipe 207 is used to convey the hydraulic oil in the hydraulic device into the feed trough 205.

[0023] By adopting the above technical solution, after the brake disc is placed on the placement table 1, the hydraulic device is used to push the hydraulic oil into the interior of the feed trough 205, and then it enters the discharge trough 206 through the transition trough 301. Among them, when the concave part of the brake disc faces downwards corresponding to the groove 101, the brake disc cannot squeeze the extrusion block 203 under the action of gravity to make it rotate downwards. At this time, the rack 304 will not be squeezed by the extrusion block 203 and drop, so it cannot drive the gear 303 to rotate. When the gear 303 does not rotate, the rotating rod 302 will not drive the adjusting block 3 to rotate. When the adjusting block 3 does not rotate, one end of the "L"-shaped transition trough 301 in the middle of it is communicated with the feed trough 205, and the other end is communicated with the upper part of the discharge trough 206, and the adjusting block 3 can play a sealing role to seal the lower side part of the discharge trough 206. When the convex part of the brake disc faces into the groove 101, the brake disc can squeeze the upper end of the extrusion block 203 under the action of gravity to make it rotate. After rotation, the extrusion block 203 can squeeze the upper end of the rack 304. After the upper end of the rack 304 is squeezed, it can drop. When the rack 304 drops, it can mesh with the gear 303, thereby driving the gear 303 to rotate. After the gear 303 rotates, it can drive the rotating rod 302 fixedly connected to it to rotate. After the rotating rod 302 rotates, it can drive the adjusting block 3 fixedly connected to it to rotate, so that the orientation of the "L"-shaped transition trough 301 on the adjusting block 3 changes. After the orientation of the transition trough 301 changes, one end of it is communicated with the interior of the feed trough 205, and the other end is communicated with the lower side part of the discharge trough 206. At the same time, the adjusting block 3 can seal the upper half part of the transition trough 301. When the transition trough 301 is communicated with the upper half part of the discharge trough 206, the hydraulic oil enters the piston trough 104 and can squeeze the piston rod 201 to move it to the side away from the groove 101. Similarly, when the transition trough 301 is communicated with the lower half part of the discharge trough 206, the hydraulic oil will enter the other half part of the piston trough 104, so that the piston rod 201 moves to the side of the center of the groove 101, so as to fix brake discs with different orientations.

[0024] One end of the moving block 103 is fixedly installed with a compression spring 105. The other end of the compression spring 105 is fixedly connected to the inner wall of the arc-shaped groove 102. The compression spring 105 can squeeze the moving block 103 to reset it. One end of the arc-shaped groove 102 is provided with a contraction groove 4. A locking rod 401 is slidably installed inside the contraction groove 4. A locking hole 106 is opened at the position of the moving block 103 corresponding to the locking rod 401. The locking rod 401 is inserted and matched with the locking hole 106. One end of the locking rod 401 away from the locking hole 106 is fixedly installed with a tension spring 402. The other end of the tension spring 402 is fixedly connected to the inner wall of the contraction groove 4. The tension spring 402 can pull the locking rod 401 to move the locking rod 401 to the initial position when the locking rod 401 is not squeezed, so that the locking rod 401 is disengaged from the locking hole 106; A piston cavity 107 is opened at the lower end of the middle part of the groove 101. A top block 108 is slidably installed inside the piston cavity 107. The top block 108 squeezes the air in the piston cavity 107. A support spring 109 is fixedly installed at the lower end of the top block 108. The side wall of the piston cavity 107 is communicated with the inside of the contraction groove 4. The air in the piston cavity 107 enters the contraction groove 4 to squeeze the locking rod 401. The support spring 109 can squeeze the top block 108 to reset it to the initial position when the top block 108 is not under pressure.

[0025] By adopting the above technical solution, when grinding or polishing the brake disc, when the brake disc starts to be ground under the action of friction, it can drive the fixed rod 202 and the piston rod 201 to move through the friction between the extrusion block 203 or the fixed rod 202, so that the moving block 103 slides a certain distance along the direction of the arc-shaped groove 102. When the moving block 103 slides a certain distance, it can squeeze the compression spring 105 to deform it. When the compression spring 105 deforms, it can provide a reaction force for the moving block 103. When the friction between the grinding head or the polishing head and the brake disc gradually decreases, the compression spring 105 can push the moving block 103 to move it to the initial position. In this way, the staff can judge the progress of grinding or polishing, so as to replace the grinding or polishing material in time and avoid excessive loss of the brake disc caused by too long grinding or polishing time; Among them, when drilling the brake disc, the convex part of the brake disc is placed downward into the groove 101. Then, press the brake disc forcefully so that the convex part on its lower side squeezes the top block 108, so that the top block 108 descends and squeezes the support spring 109, making the deformation degree of the support spring 109 increase. The support spring 109 with increased deformation degree will become shorter. At this time, after the top block 108 descends, it can squeeze the air in the piston cavity 107, so that the air in the piston cavity 107 enters the inside of the contraction groove 4. The air entering the contraction groove 4 can squeeze the locking rod 401, so that the locking rod 401 moves along the direction of the contraction groove 4. One end of the moved locking rod 401 can be inserted into the locking hole 106, so that the moving block 103 is fixed inside the arc-shaped groove 102, and the brake disc can be kept stable during the drilling process to avoid deviation and deformation of the hole.

[0026] Usage method: Place the brake disc on the placement table 1, and then use the hydraulic equipment on the machine tool to inject hydraulic oil into the piston cavity 107. At this time, it can automatically drive the piston rod 201 to move, so that the fixing rod 202 and the extrusion block 203 on the fixing rod 202 move. After the movement, the fixing rod 202 and the extrusion block 203 can automatically fix the brake disc. When drilling the brake disc, the raised part of the brake disc needs to be aligned downward with the groove 101, and an additional pressure is applied to make the brake disc squeeze the top block 108, so as to squeeze the air in the piston cavity 107 through the top block 108 to make the locking rod 401 move. The moved locking rod 401 is used in cooperation with the locking hole 106 to fix the moving block 103 in the initial position, avoiding the deformation of the hole due to the offset of the brake disc during drilling.

[0027] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A positioning tooling for machining an automotive brake disc, comprising a placement table (1), characterized in that: A groove (101) is formed in the middle of the placement table (1). A plurality of arc-shaped grooves (102) are formed in the inner wall of the groove (101). A moving block (103) is slidably installed inside the arc-shaped groove (102). A piston groove (104) is formed at one end of the moving block (103) close to the center of the groove (101). And a fixing component (2) is installed on one side of the moving block (103) close to the center of the groove (101). The fixing component (2) is used for fixing the brake disc. The fixing component (2) includes a piston rod (201) slidably installed inside the piston groove (104). A fixing rod (202) is fixedly installed on one side of the upper end of the piston rod (201). An extrusion block (203) is rotatably installed at one end of the upper side of the fixing rod (202) away from the center of the groove (101). A friction pad (204) is fixedly installed at one end of the fixing rod (202) close to the center of the groove (101). And a friction pad (204) is also fixedly installed at one end of the extrusion block (203) away from the fixing rod (202).

2. The positioning tooling for machining an automotive brake disc according to claim 1, characterized in that: A compression spring (105) is fixedly installed at one end of the moving block (103). The other end of the compression spring (105) is fixedly connected to the inner wall of the arc-shaped groove (102).

3. The positioning tooling for machining an automotive brake disc according to claim 2, characterized in that: A feed groove (205) is formed at one end of the piston rod (201) away from the fixing rod (202). And a discharge groove (206) is formed at a position corresponding to the end of the feed groove (205) on the piston rod (201). The discharge groove (206) has an "L" - shaped structure. The vertical part in the middle of the feed groove (205) is communicated with the discharge groove (206).

4. A positioning tooling for machining an automotive brake disc according to claim 3, characterized in that: An adjusting block (3) is rotatably installed inside the piston rod (201). A transition groove (301) is formed in the middle of the adjusting block (3). And the transition groove (301) has an "L" - shaped structure. The horizontal part of the transition groove (301) is communicated with the inside of the feed groove (205).

5. A positioning tooling for machining an automotive brake disc according to claim 4, characterized in that: A rotating rod (302) is fixedly installed at one end of the adjusting block (3) away from the feed groove (205). A gear (303) is fixedly installed at one end of the rotating rod (302) away from the adjusting block (3). A rack (304) is arranged on the upper side of the piston rod (201). The rack (304) is used for driving the gear (303) to rotate. A return spring (305) is fixedly installed at the lower end of the rack (304). The other end of the return spring (305) is fixedly connected to the inside of the piston rod (201). And the upper end of the rack (304) is in extrusion contact with the lower side of the extrusion block (203).

6. The positioning tooling for machining an automotive brake disc according to claim 5, wherein: An infusion tube (207) is fixedly installed at a position corresponding to the feed groove (205) on the piston rod (201). The other end of the infusion tube (207) is connected to a hydraulic device on the machine tool. The infusion tube (207) is used for transporting the hydraulic oil in the hydraulic device into the feed groove (205).

7. The positioning tooling for machining an automotive brake disc according to claim 6, wherein: One end of the arc-shaped groove (102) is provided with a contraction groove (4). A locking rod (401) is slidably installed inside the contraction groove (4). A locking hole (106) is provided at a position corresponding to the locking rod (401) on the moving block (103). The locking rod (401) is inserted into the locking hole (106) in a mating manner. A tension spring (402) is fixedly installed at one end of the locking rod (401) away from the locking hole (106). The other end of the tension spring (402) is fixedly connected to the inner wall of the contraction groove (4).

8. A positioning tooling for machining an automotive brake disc according to claim 7, characterized in that: A piston chamber (107) is provided at the lower end of the middle part of the groove (101). A top block (108) is slidably installed inside the piston chamber (107). The top block (108) squeezes the air in the piston chamber (107). A support spring (109) is fixedly installed at the lower end of the top block (108). The side wall of the piston chamber (107) is communicated with the inside of the contraction groove (4). The air in the piston chamber (107) enters the contraction groove (4) to squeeze the locking rod (401).

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