Clamp for machining brake shoe shaft hole

Abstract

The utility model relates to brake shoe axle hole processing technical field, and disclose a kind of clamp for brake shoe axle hole processing, including bottom plate, the top of bottom plate is provided with driving seat, the top of driving seat is provided with puncher. By starting second motor, the output shaft of second motor drives bidirectional screw rod to rotate, with the rotation of bidirectional screw rod, in the case where moving seat is restricted and cannot rotate, it will move, until two side clamps move to the two sides of brake shoe, and the two sides of brake shoe are realized tightly adhering extrusion, at this time, the clamping of brake shoe all directions is realized, and this adjustable clamping mode can be suitable for more different specifications brake shoe, and the practicality is higher, while the clamping of all directions does not leave gap, so that the stability of clamping is higher, improve the accuracy of brake shoe axle hole processing, while using full-automatic mode clamping is more convenient, improve the efficiency of clamping.

Description

Technical Field

[0001] This utility model relates to the field of brake shoe shaft hole machining technology, specifically a fixture for machining brake shoe shaft holes. Background Technology

[0002] The brake consists of a brake wheel, two brake shoes, and a braking device, with the brake shoes located inside the brake wheel. Each brake shoe includes an arc-shaped shoe plate and a rib plate. The shoe plate is connected to the outer periphery of the arc-shaped rib plate. The rib plate has shaft holes at both ends. The shaft hole at the supporting end of the rib plate is connected to the base plate via a support pin, and the shaft hole at the driving end is connected to the wheel cylinder piston.

[0003] During the processing of brake shoes, the shaft hole at the end of the brake shoe rib plate needs to be drilled and bored. The existing clamping device does not securely fix the brake shoe. After drilling, the brake shoe will be slightly loose. If boring is then performed from the other end, it will affect the boring accuracy, thus affecting the quality of the brake shoe. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a fixture for machining brake shoe shaft holes, which has the advantages of high stability during machining and solves the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a fixture for machining brake shoe shaft holes, comprising a base plate, a drive seat on the top of the base plate, a drilling machine on the top of the drive seat, a machining table on the top of the base plate, a fixing plate on the top of the machining table, an electric push rod on the top and bottom surface of the fixing plate, an upper pressure plate on the bottom of the electric push rod, an installation groove on the top of the machining table, a fixing seat on the top of the machining table, a movable groove on the top of the fixing seat, a threaded block movably disposed inside the movable groove, a one-way threaded rod threaded on the inner wall of the threaded block, an output shaft of a first motor fixedly disposed at one end of the one-way threaded rod, a fixing clamping plate on the top of the fixing seat, and a movable clamping plate on the top of the threaded block.

[0008] Preferably, the top of the processing table is provided with an adjustment groove, which is located on both sides inside the mounting groove. A second motor is installed inside the adjustment groove, and a bidirectional threaded rod is fixedly installed on the output shaft of the second motor. A movable seat is threaded on the outer wall of the bidirectional threaded rod, and a side clamp is provided on the top of the movable seat. A rotating seat is rotatably installed on the outer wall of the end of the bidirectional threaded rod.

[0009] Preferably, the upper pressure plate is located above the fixed clamping plate and the movable clamping plate, and the width of the upper pressure plate is greater than the width of the fixed base.

[0010] Preferably, the rotating seat is located at one end of the adjusting groove, the outer wall of the movable seat is movably connected to the inner wall of the adjusting groove, and the surface of the bidirectional threaded rod is provided with two threaded grooves in opposite directions, each threaded groove being threadedly connected to the inner wall of the two movable seats respectively.

[0011] Preferably, the tail end surface of the bidirectional threaded rod is smoothly provided, and the inner wall of the rotating seat is rotatably connected to the smooth portion of the bidirectional threaded rod.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, this utility model provides a fixture for machining brake shoe shaft holes, which has the following advantages:

[0014] This clamping fixture for machining brake shoe shaft holes works by starting a second motor. The output shaft of the second motor drives a bidirectional threaded rod to rotate. As the bidirectional threaded rod rotates, the moving seat, which is restricted from rotating, moves accordingly until the two side clamping plates move to both sides of the brake shoe and tightly press against both sides. This achieves all-around clamping of the brake shoe. This adjustable clamping method is suitable for brake shoes of many different specifications, making it more practical. At the same time, the all-around clamping without gaps makes the clamping more stable and improves the accuracy of machining brake shoe shaft holes. Furthermore, the fully automatic clamping method makes clamping more convenient and improves clamping efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the fixing base structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the second motor structure of this utility model.

[0019] In the diagram: 1. Base plate; 2. Drive seat; 3. Drilling machine; 4. Processing table; 5. Fixing plate; 6. Electric push rod; 7. Upper pressure plate; 8. Mounting slot; 9. Fixing seat; 10. One-way threaded rod; 11. Movable slot; 12. Movable clamping plate; 13. Threaded block; 14. First motor; 15. Fixing clamping plate; 16. Second motor; 161. Two-way threaded rod; 162. Moving seat; 163. Side clamping plate; 164. Rotating seat. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-3 A fixture for machining brake shoe shaft holes includes a base plate 1, a drive seat 2 on the top of the base plate 1, a drilling machine 3 on the top of the drive seat 2, a machining table 4 on the top of the base plate 1, a fixing plate 5 on the top of the machining table 4, an electric push rod 6 on the top and bottom surface of the fixing plate 5, an upper pressure plate 7 on the bottom of the electric push rod 6, an installation groove 8 on the top of the machining table 4, a fixing seat 9 on the top of the machining table 4, a movable groove 11 on the top of the fixing seat 9, a threaded block 13 movably disposed inside the movable groove 11, a one-way threaded rod 10 threaded on the inner wall of the threaded block 13, an output shaft of a first motor 14 fixedly disposed at one end of the one-way threaded rod 10, a fixing clamping plate 15 on the top of the fixing seat 9, and a movable clamping plate 12 on the top of the threaded block 13.

[0022] The upper pressure plate 7 is located above the fixed clamping plate 15 and the movable clamping plate 12, and the width of the upper pressure plate 7 is greater than the width of the fixed base 9.

[0023] Specifically, the brake shoe to be processed is placed on the opposite side of the fixed clamping plate 15 and the movable clamping plate 12, above the fixed seat 9. Then, the first motor 14 is started to drive the threaded block 13 to move, which in turn drives the movable clamping plate 12 to move until the inner wall of the movable clamping plate 12 and the fixed clamping plate 15 are tightly fitted with the brake shoe, thereby clamping the front and rear sides of the brake shoe and ensuring the stability of the brake shoe during processing. Then, the electric push rod 6 is started, and the output shaft of the electric push rod 6 pushes the upper pressure plate 7 to move downward until the bottom surface of the upper pressure plate 7 is tightly fitted and pressed with the top surface of the brake shoe, at which point the upper limit of the brake shoe can be achieved.

[0024] according to Figure 4 As shown, the top of the processing table 4 is provided with an adjustment groove, which is located on both sides inside the mounting groove 8. A second motor 16 is installed inside the adjustment groove. The output shaft of the second motor 16 is fixedly provided with a bidirectional threaded rod 161. A movable seat 162 is threaded on the outer wall of the bidirectional threaded rod 161. A side clamp 163 is provided on the top of the movable seat 162. A rotating seat 164 is rotatably provided on the outer wall of the end of the bidirectional threaded rod 161.

[0025] The rotating seat 164 is located at one end of the adjusting groove, the outer wall of the movable seat 162 is movably connected to the inner wall of the adjusting groove, the surface of the bidirectional threaded rod 161 is provided with two sections of threaded grooves in opposite directions, each section of threaded groove is threadedly connected to the inner wall of the two movable seats 162 respectively, the tail end surface of the bidirectional threaded rod 161 is smoothly provided, and the inner wall of the rotating seat 164 is rotatably connected to the smooth part of the bidirectional threaded rod 161.

[0026] In use, by starting the second motor 16, the output shaft of the second motor 16 drives the bidirectional threaded rod 161 to rotate. As the bidirectional threaded rod 161 rotates, the moving seat 162, which is restricted from rotating, will move accordingly until the two side clamping plates 163 move to both sides of the brake shoe and tightly press against both sides of the brake shoe. At this time, the brake shoe is clamped from all directions. This adjustable clamping method can be used for brake shoes of many different specifications, making it more practical. At the same time, the all-round clamping without gaps makes the clamping more stable and improves the accuracy of machining the brake shoe shaft hole. In addition, the fully automatic clamping method is more convenient and improves the clamping efficiency.

[0027] The use of electric push rod 6, first motor 14, second motor 16 and drilling machine 3 all reference existing technologies, which will not be described in detail in this application. When using them, the preferred method can be selected under the premise of meeting the driving conditions.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixture for machining brake shoe shaft holes, comprising a base plate (1), a drive seat (2) disposed on the top of the base plate (1), a drilling machine (3) disposed on the top of the drive seat (2), a machining table (4) disposed on the top of the base plate (1), a fixing plate (5) disposed on the top of the machining table (4), an electric push rod (6) disposed on the top and bottom surfaces of the fixing plate (5), and an upper pressure plate (7) disposed on the bottom of the electric push rod (6), characterized in that: The processing table (4) has an installation groove (8) on its top, a fixed seat (9) on its top, a movable groove (11) on its top, a threaded block (13) inside the movable groove (11), a one-way threaded rod (10) on the inner wall of the threaded block (13), an output shaft of a first motor (14) fixedly installed at one end of the one-way threaded rod (10), a fixed clamping plate (15) on the top of the fixed seat (9), and a movable clamping plate (12) on the top of the threaded block (13).

2. The fixture for machining brake shoe shaft holes according to claim 1, characterized in that: The top of the processing table (4) is provided with an adjustment groove, which is located on both sides inside the mounting groove (8). A second motor (16) is provided inside the adjustment groove. The output shaft of the second motor (16) is fixedly provided with a bidirectional threaded rod (161). A movable seat (162) is threaded on the outer wall of the bidirectional threaded rod (161). A side clamp (163) is provided on the top of the movable seat (162). A rotating seat (164) is rotatably provided on the outer wall of the end of the bidirectional threaded rod (161).

3. The fixture for machining brake shoe shaft holes according to claim 1, characterized in that: The upper pressure plate (7) is located above the fixed clamping plate (15) and the movable clamping plate (12), and the width of the upper pressure plate (7) is greater than the width of the fixed seat (9).

4. The fixture for machining brake shoe shaft holes according to claim 2, characterized in that: The rotating seat (164) is located at one end of the adjusting groove. The outer wall of the movable seat (162) is movably connected to the inner wall of the adjusting groove. The surface of the bidirectional threaded rod (161) is provided with two threaded grooves in opposite directions. Each threaded groove is threadedly connected to the inner wall of the two movable seats (162).

5. A fixture for machining brake shoe shaft holes according to claim 2, characterized in that: The tail end surface of the bidirectional threaded rod (161) is smoothly provided, and the inner wall of the rotating seat (164) is rotatably connected to the smooth part of the bidirectional threaded rod (161).

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