A brake pad assembly grinding tool

Abstract

A brake pad assembly grinding tool, including a fixed disc, the upper surface of the fixed disc is provided with a mounting groove in the circumferential direction, the center of the fixed disc is provided with a mounting hole, the mounting groove and the mounting hole are provided with an annular groove, the fixed disc between the annular groove and the mounting groove is uniformly provided with a plurality of sliding holes, the sliding holes are arranged along the radial direction of the fixed disc, the sliding holes are slidably provided with a moving mechanism, the annular groove is rotatably provided with an annular clamping plate, the outer side of the annular clamping plate is uniformly provided with a plurality of dismounting assemblies corresponding to the sliding holes, the dismounting assemblies have the function of realizing the synchronous movement of the plurality of moving mechanisms when the annular clamping plate is rotated to a predetermined angle, and the annular clamping plate and the fixed disc are further provided with a locking mechanism, the locking mechanism has the function of locking when the annular clamping plate is rotated to a predetermined angle. A brake pad assembly grinding tool is provided, which can ensure the quality of part processing and improve the production efficiency of parts.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, and in particular to a grinding fixture for brake pad assemblies. Background Technology

[0002] The stationary disc assembly in a helicopter braking system is formed by riveting a stationary disc frame to a brake pad assembly. The brake pad assembly is formed by sintering a copper metal frame with a copper-based powder metallurgy friction material. The sintering process is as follows: an appropriate amount of powder metallurgy friction material is poured into the cavity of a pressing mold, pressure is applied to form a friction body, the friction body is bound to the metal frame, and then the bound brake pad assembly is placed in a bell-type pressure sintering furnace for heating and pressure sintering. Finally, after cooling and removing from the furnace, a brake pad assembly blank is formed.

[0003] Because the brake pad assembly needs to be rapidly cooled with water immediately after high-temperature and high-pressure sintering, the metal frame of the brake pad assembly deforms, and the flatness of the frame is 0.2-0.3mm. In order to ensure the gap between the brake pad assembly and the stationary disc frame after riveting, the brake pad assembly needs to be ground to ensure that the thickness tolerance of the parts is 0.05mm and the flatness of the frame surface is less than 0.1mm.

[0004] The brake pad assembly, composed of a copper frame and a copper-based friction element, is not magnetic. Currently, grinding is performed by clamping individual parts in a flat vise on a surface grinder, resulting in extremely low production efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a grinding fixture for brake pad assemblies to solve the above problems and improve the production efficiency of parts.

[0006] To achieve the above objectives, the following technical solution is adopted: a brake pad assembly grinding fixture, including a fixed plate, a mounting groove provided on the upper surface of the fixed plate along the circumferential direction, a mounting hole provided at the center of the fixed plate, an annular groove provided between the mounting groove and the mounting hole, a plurality of sliding holes evenly provided on the fixed plate between the annular groove and the mounting groove, the sliding holes being arranged along the radial direction of the fixed plate, a moving mechanism being slidably arranged in the sliding holes, an annular retaining plate rotatably arranged in the annular groove, a plurality of disassembly components corresponding to the sliding holes evenly arranged on the outer edge of the annular retaining plate, the disassembly components enabling the multiple moving mechanisms to move synchronously when the annular retaining plate is rotated to a predetermined angle, a locking mechanism is also provided between the annular retaining plate and the fixed plate, the locking mechanism being able to lock when the annular retaining plate is rotated to a predetermined angle.

[0007] Preferably, the disassembly assembly includes a plurality of arc-shaped grooves disposed on the outer edge of the annular plate, the arc-shaped grooves corresponding to the sliding holes, and one end of the moving mechanism extending to and abutting the bottom of the arc-shaped grooves.

[0008] Preferably, the locking mechanism includes a plurality of slots disposed on the outer edge of the annular plate, the number of slots corresponding to the arc-shaped groove, the slots being located to the right of the arc-shaped groove, and the depth of the slots being less than the depth of the arc-shaped groove.

[0009] Preferably, the locking mechanism includes a screw hole at the bottom of the annular groove, the axis of the screw hole being located on the outer circle of the annular groove, the axis of the screw hole being parallel to the axis of the mounting hole, and a notch being provided on the outer edge of the annular locking plate. When the annular locking plate rotates to a predetermined angle, the notch coincides with the screw hole and is locked by an internal hex bolt.

[0010] Preferably, the moving mechanism includes a push rod, a slide rod, and a spring. One end of the slide rod extends into the mounting groove by a predetermined distance, and the other end of the slide rod is located in the sliding hole. A fixing hole is provided at the other end of the slide rod. One end of the spring is fixed to the bottom of the fixing hole. One end of the push rod is located in the fixing hole, and the other end of the spring is connected to the push rod located in the fixing hole. The other end of the push rod extends to the bottom of the arc-shaped groove and abuts against it.

[0011] Preferably, the other end of the top rod is provided with a fixing groove, and a ball is provided in the fixing groove, the ball being in rolling connection with the bottom of the arc-shaped groove.

[0012] Preferably, it further includes a limiting mechanism for limiting the rotation of the annular plate by a predetermined angle. The limiting mechanism includes a connecting groove, a limiting rod, a limiting block, and a limiting groove. The limiting groove is evenly arranged on the back of the fixed plate. The connecting groove is evenly distributed at the bottom of the annular groove and communicates with the limiting groove. The bottom of the annular plate is connected to the limiting rod. One end of the limiting rod passes through the connecting groove and is connected to the limiting block. The limiting block is located in the limiting groove.

[0013] Preferably, the fixed disk has multiple threaded through holes distributed around its circumference. One end of each threaded through hole is located on the outer edge of the fixed disk, and the other end of each threaded through hole extends to the wall of the mounting groove. A threaded rod is threadedly connected to the threaded through hole, and one end of the threaded rod can extend into the mounting groove.

[0014] Preferably, the annular card plate has a snap-fit ​​groove along its circumference on its surface, and snap-fit ​​teeth are evenly distributed on the outer wall of the snap-fit ​​groove.

[0015] Preferably, the annular plate has a insertion hole on its surface, and a rocker arm is detachably connected to the insertion hole.

[0016] The beneficial effects achieved by this invention are as follows:

[0017] This invention proposes a grinding fixture for brake pad assemblies, which can clamp and fix multiple parts, facilitating grinding and improving production efficiency. It can also complete disassembly or fixing in one go. By setting up a disassembly component and the structure connected to it, multiple moving mechanisms can move synchronously when the annular clamping plate rotates to a predetermined angle, thereby improving disassembly and assembly efficiency. By setting up a locking mechanism and the structure connected to it, the parts can be locked after being fixed, preventing the parts from falling off. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a grinding fixture structure for a brake pad assembly according to the present invention.

[0019] Figure 2 This is a top view schematic diagram of a grinding fixture for a brake pad assembly according to the present invention.

[0020] Figure 3 This is a schematic diagram of the back structure of a grinding fixture for a brake pad assembly according to the present invention.

[0021] Figure 4 This is a schematic diagram of the structure of a brake pad assembly grinding fixture after clamping and fixing a brake pad assembly blank according to the present invention.

[0022] Figure 5 This is a schematic diagram of the fixing disc structure of a grinding fixture for a brake pad assembly according to the present invention.

[0023] Figure 6 This is a schematic diagram of the back structure of the grinding fixture fixing disc for a brake pad assembly according to the present invention.

[0024] Figure 7 This is a top view of the fixing plate of the grinding fixture for a brake pad assembly according to the present invention.

[0025] Figure 8 for Figure 2 Enlarged structural diagram at point A in the middle.

[0026] Figure 9 for Figure 2 Enlarged structural diagram at point B.

[0027] Figure 10 This is a schematic diagram of the internal hexagonal bolt structure of a brake pad assembly grinding fixture according to the present invention.

[0028] Figure 11 This is a schematic diagram of the blank structure of a brake pad assembly.

[0029] In the diagram, 1-fixed plate, 2-mounting groove, 3-mounting hole, 4-annular groove, 5-sliding hole, 6-moving mechanism, 61-top rod, 611-fixing groove, 612-ball, 62-sliding rod, 63-spring, 64-fixing hole, 7-annular retaining plate, 8-arc groove, 9-screw hole, 10-notch, 11-internal hex bolt, 12-connecting groove, 13-limiting rod, 14-limiting block, 15-limiting groove, 16-threaded through hole, 17-threaded rod, 18-clamping groove, 19-brake pad assembly blank. Detailed Implementation

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] See appendix Figure 1-11A grinding fixture for brake pad assemblies includes a fixed plate 1. The upper surface of the fixed plate 1 has a mounting groove 2 along the circumferential direction. A mounting hole 3 is provided at the center of the fixed plate 1 for connection to a grinding machine. An annular groove 4 is provided between the mounting groove 2 and the mounting hole 3. The annular groove 4 is located on the upper surface of the fixed plate 1 and is arranged circumferentially. Multiple sliding holes 5 are evenly arranged on the fixed plate 1 between the annular groove 4 and the mounting groove 2. The sliding holes 5 are arranged radially on the fixed plate 1. A moving mechanism 6 is slidably disposed within each sliding hole 5. An annular retaining plate 7 is rotatably disposed within the annular groove 4. Multiple disassembly components corresponding to the sliding holes 5 are evenly arranged along the outer edge of the annular retaining plate 7. The disassembly components have the function of rotating the annular retaining plate 7 to a predetermined angle. Multiple moving mechanisms 6 move synchronously. A locking mechanism is also provided between the annular clamping plate 7 and the fixed plate 1. The locking mechanism locks the annular clamping plate 7 when it is rotated to a predetermined angle. In use, multiple brake pad assembly blanks 19 to be ground are placed in the mounting groove 2. By rotating the annular clamping plate 7, multiple moving mechanisms 6 are pushed to move so that one end of the moving mechanism 6 abuts against the brake pad assembly blank 19 located in the mounting groove 2 through the sliding hole 5, thereby clamping multiple brake pad assembly blanks 19 for grinding. Furthermore, on the basis of grinding multiple brake pad assembly blanks 19, the clamping or disassembly process of multiple brake pad assembly blanks 19 can be carried out simultaneously, that is, clamping or disassembly can be completed at one time, and the multiple moving mechanisms 6 do not affect each other's clamping effect.

[0033] To facilitate disassembly and improve production efficiency, the disassembly assembly includes multiple arc-shaped grooves 8 along the outer edge of the annular clamping plate 7. These arc-shaped grooves 8 correspond to the sliding holes 5. One end of the moving mechanism 6 extends to and abuts against the bottom of the arc-shaped groove 8. By rotating the annular clamping plate 7, the moving mechanism 6 moves along the sliding holes 5, thereby clamping and fixing the brake pad assembly blank 19 located on the mounting groove 2. Due to the rotation of the annular clamping plate 7, the other end of the moving mechanism 6 disengages from the arc-shaped groove 8 and abuts against the outer edge of the annular clamping plate 7. The arc-shaped groove 8 has a "√" shaped cross-section, and its right end is tangent to the outer edge of the annular clamping plate 7.

[0034] To facilitate locking the brake pad assembly blank 19 after it is fixed, the locking mechanism includes multiple slots (not shown in the figure) provided on the outer edge of the annular plate 7. The number of slots corresponds to the arc-shaped groove 8. The slots are located on the right side of the arc-shaped groove 8, and the depth of the slots is less than the depth of the arc-shaped groove 8.

[0035] To facilitate locking the brake pad assembly blank 19 after it is fixed, the locking mechanism includes a screw hole 9 at the bottom of the annular groove 4. The axis of the screw hole 9 is located on the outer circle of the annular groove 4 and is parallel to the axis of the mounting hole 3. The annular retaining plate 7 has a notch 10 on its outer edge. When the annular retaining plate 7 rotates to a predetermined angle, the notch 10 coincides with the screw hole 9 and is locked by an internal hex bolt 11, thereby preventing the annular retaining plate 7 from rotating relative to the brake pad assembly blank 19 and locking it to prevent it from falling off.

[0036] The moving mechanism 6 includes a push rod 61, a slide rod 62, and a spring 63. One end of the slide rod 62 extends into the mounting groove 2 by a predetermined distance, and the other end of the slide rod 62 is located in the sliding hole 5, with a fixing hole 64 formed at the other end. One end of the spring 63 is fixed to the bottom of the fixing hole 64. One end of the push rod 61 is located in the fixing hole 64, and the other end of the spring 63 is connected to the push rod 61 located in the fixing hole 64. The other end of the push rod 61 extends to the bottom of the arc-shaped groove 8 and abuts against it. When the annular clamping plate 7 rotates, the length of the push rod 61 located in the arc groove 8 gradually shortens until the end of the push rod 61 abuts against the outer edge of the annular clamping plate 7. Under the action of the spring 63, the slide rod 62 slides into the mounting groove 2 and abuts against the brake pad assembly blank 19 located in the mounting groove 2, thereby achieving clamping and fixing. One end of the slide rod 62 can extend into the mounting groove 2 and is connected to an inner gasket. The inner gasket matches the brake pad assembly blank 19, thereby increasing the force-bearing area and avoiding localized force that could cause the brake pad assembly blank 19 to break.

[0037] To facilitate the relative movement of the push rod 61 along the bottom of the arc-shaped groove 8, a fixing groove 611 is provided at the other end of the push rod 61. A ball 612 is provided in the fixing groove 611, and the ball 612 is in rolling connection with the bottom of the arc-shaped groove 8.

[0038] To ensure that the annular plate 7 always rotates within the annular groove 4 and only rotates by a predetermined angle, a limiting mechanism is also included to limit the rotation angle of the annular plate 7. The limiting mechanism includes a connecting groove 12, a limiting rod 13, a limiting block 14, and a limiting groove 15. The limiting groove 15 is evenly distributed on the back of the fixed plate 1. The connecting groove 12 is evenly distributed at the bottom of the annular groove 4 and communicates with the limiting groove 15. The bottom of the annular plate 7 is connected to the limiting rod 13. One end of the limiting rod 13 passes through the connecting groove 12 and connects to the limiting block 14. The limiting block 14 is located within the limiting groove 15.

[0039] To facilitate adjustment of the clamping force and allow for adjustment in case of loosening during the locking state, the fixed disk 1 has multiple threaded through holes 16 distributed around its circumference. One end of each threaded through hole 16 is located on the outer edge of the fixed disk 1, and the other end extends to the wall of the mounting groove 2. A threaded rod 17 is threadedly connected to the threaded through hole 16, and one end of the threaded rod 17 can extend into the mounting groove 2. An outer washer is connected to one end of the threaded rod 17 that extends into the mounting groove 2. This outer washer acts on the outer end of the brake pad assembly blank 19, thereby increasing the force-bearing area and preventing localized stress that could cause the brake pad assembly blank 19 to break. To prevent the brake pad assembly blank 19 from wobbling after clamping, the sliding hole 5 and the threaded through hole 16 are not coaxially arranged.

[0040] To facilitate the rotation of the annular clamping plate 7, a circumferentially formed locking groove 18 is provided on the surface of the annular clamping plate 7, and locking teeth are evenly distributed on the outer wall of the locking groove 18. The annular clamping plate 7 can be driven to rotate to a predetermined angle by engaging with the locking teeth through a sleeve with an external toothed structure.

[0041] To facilitate the rotation of the annular clamping plate 7, an insertion hole is provided on the surface of the annular clamping plate 7, and a rocker arm (not shown in the figure) is detachably connected to the insertion hole. The axis of the insertion hole is parallel to the axis of the mounting hole 3, and the annular clamping plate 7 is driven to rotate to a predetermined angle by the detachable rocker arm.

[0042] Among them, after the brake pad assembly blank 19 is clamped and fixed, the brake pad assembly blank 19 has a protruding part relative to the fixed plate 1 and the annular clamping plate 7, so as to facilitate grinding.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A grinding fixture for brake pad assemblies, comprising a fixed disc (1), characterized in that: The upper surface of the fixed plate (1) is provided with an installation groove (2) along the circumferential direction. The center of the fixed plate (1) is provided with an installation hole (3). An annular groove (4) is provided between the installation groove (2) and the installation hole (3). A plurality of sliding holes (5) are uniformly provided on the fixed plate (1) between the annular groove (4) and the installation groove (2). The sliding holes (5) are arranged along the radial direction of the fixed plate (1). A moving mechanism (6) is slidably provided in the sliding hole (5). An annular plate (7) is rotatably provided in the annular groove (4). A plurality of disassembly components corresponding to the sliding holes (5) are uniformly provided on the outer edge of the annular plate (7). The disassembly components enable the multiple moving mechanisms (6) to move synchronously when the annular plate (7) is rotated to a predetermined angle. A locking mechanism is also provided between the annular plate (7) and the fixed plate (1). The locking mechanism is capable of locking when the annular plate (7) is rotated to a predetermined angle. The disassembly assembly includes a plurality of arc-shaped grooves (8) disposed on the outer edge of the annular plate (7), the arc-shaped grooves (8) corresponding to the sliding holes (5), and one end of the moving mechanism (6) extending to the bottom of the arc-shaped grooves (8) and abutting against them; The locking mechanism includes multiple slots disposed on the outer edge of the annular plate (7), the number of slots corresponding to the arc groove (8), the slots being located on the right side of the arc groove (8), and the depth of the slots being less than the depth of the arc groove (8); The locking mechanism includes a screw hole (9) at the bottom of the annular groove (4). The axis of the screw hole (9) is located on the outer circle of the annular groove (4). The axis of the screw hole (9) is parallel to the axis of the mounting hole (3). The outer edge of the annular plate (7) is provided with a notch (10). When the annular plate (7) is rotated to a predetermined angle, the notch (10) coincides with the screw hole (9) and is locked by an internal hex bolt (11). The moving mechanism (6) includes a top rod (61), a slide rod (62) and a spring (63). One end of the slide rod (62) can extend into the mounting groove (2) by a predetermined distance. The other end of the slide rod (62) is located in the sliding hole (5), and the other end of the slide rod (62) is provided with a fixing hole (64). One end of the spring (63) is fixed to the bottom of the fixing hole (64). One end of the top rod (61) is located in the fixing hole (64). The other end of the spring (63) is connected to the top rod (61) located in the fixing hole (64). The other end of the top rod (61) extends to the bottom of the arc groove (8) and abuts against it.

2. The brake pad assembly grinding fixture according to claim 1, characterized in that: The other end of the top rod (61) is provided with a fixing groove (611), and a ball (612) is provided in the fixing groove (611). The ball (612) is in rolling connection with the bottom of the arc groove (8).

3. The brake pad assembly grinding fixture according to claim 1, characterized in that: It also includes a limiting mechanism for limiting the rotation of the annular plate (7) by a predetermined angle. The limiting mechanism includes a connecting groove (12), a limiting rod (13), a limiting block (14), and a limiting groove (15). The limiting groove (15) is evenly arranged on the back of the fixed plate (1). The connecting groove (12) is evenly distributed at the bottom of the annular groove (4) and communicates with the limiting groove (15). The bottom of the annular plate (7) is connected to the limiting rod (13). One end of the limiting rod (13) passes through the connecting groove (12) and is connected to the limiting block (14). The limiting block (14) is located in the limiting groove (15).

4. The brake pad assembly grinding fixture according to claim 1, characterized in that: The fixed disk (1) has a plurality of threaded through holes (16) distributed around its circumference. One end of the threaded through hole (16) is located on the outer edge of the fixed disk (1), and the other end of the threaded through hole (16) extends to the groove wall of the mounting groove (2). A threaded rod (17) is threadedly connected inside the threaded through hole (16), and one end of the threaded rod (17) can extend into the mounting groove (2).

5. The brake pad assembly grinding fixture according to claim 1, characterized in that: The annular card plate (7) has a snap-fit ​​groove (18) along its circumference on its surface, and snap-fit ​​teeth are evenly distributed on the outer wall of the snap-fit ​​groove (18).

6. The brake pad assembly grinding fixture according to claim 1, characterized in that: The annular card plate (7) has a plug hole on its surface, and a rocker arm is detachably connected to the plug hole.

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