Motorcycle engine starting gear fixing seat tool clamp

Abstract

The utility model relates to the field of workpiece clamping devices, and discloses a motorcycle engine starting gear fixing base tool clamp which comprises a limiting tool base, a power mechanism arranged below the limiting tool base, a positioning mandrel and an abutting block, the positioning mandrel and the abutting block are located in the limiting tool base and arranged up and down, and the abutting block is fixedly connected with the power mechanism. A workpiece is placed in the limiting tool base, the bottom of the workpiece is located between the positioning mandrel and the abutting block, the abutting block moves in the direction close to the positioning mandrel under the action of the power mechanism to clamp the workpiece, and the positioning mandrel penetrates through the workpiece to position the workpiece. The utility model has the beneficial effects that the clamping force is constant, the workpiece clamping efficiency is improved, the operation is simple, the auxiliary processing time is shortened, the workpiece clamping cost is low, the production cost is reduced, and the reliability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to workpiece clamping device field, especially to a motorcycle engine starting gear fixing seat frock clamp. BACKGROUND

[0002] In the production process, the motorcycle engine starting gear fixing seat needs to use the clamp to clamp, but the fixing seat has no specific clamping compression point, therefore, when designing the clamp, only the bottom position of the workpiece can be considered to be compressed due to the particularity of the structure, and due to the workpiece clamping position limitation and process size precision requirement, the clamp with the compression structure needs to be used to compress the bottom.

[0003] The existing compression structure adopts the pressing plate and is compressed manually by the bolt, and the compression mechanism makes the workpiece clamping time longer and the clamping efficiency lower, and according to the clamping method of the operator, the workpiece clamping force is different, the workpiece is compressed to different compression forces, and the process size of the workpiece after processing may be affected by the compression deformation to cause defects. UTILITY MODEL CONTENT

[0004] In order to overcome the problems that the workpiece clamping time is longer, the clamping efficiency is lower and the process size of the workpiece after processing is affected by the compression deformation to cause defects in the prior art, the utility model provides a motorcycle engine starting gear fixing seat frock clamp, the automatic telescopic top block is arranged in cooperation with the limiting frock seat, the workpiece can be clamped quickly, the clamping force is constant, the workpiece clamping efficiency is improved, the operation is simple, the auxiliary processing time is shortened, the workpiece clamping cost is low, the production cost is reduced, and the beneficial effects of high reliability are achieved.

[0005] The technical scheme of the utility model is as follows:

[0006] A motorcycle engine starting gear fixing seat frock clamp, including limiting frock seat, power mechanism arranged below the limiting frock seat and positioning core shaft and top block arranged in the limiting frock seat and up and down, wherein the top block is fixedly connected with the power mechanism, the workpiece is placed in the limiting frock seat, and the bottom is located between the positioning core shaft and the top block, the top block is moved to the direction close to the positioning core shaft under the action of the power mechanism to clamp the workpiece, and the positioning core shaft passes through the workpiece to position it.

[0007] Compared with the prior art, the beneficial effects of the technical scheme are as follows:

[0008] (1) The top block of the tool fixture can move towards the positioning mandrel under the action of the power mechanism to clamp the workpiece, and the positioning mandrel passes through the workpiece to position it, so that the positioning mandrel and the top block cooperate to clamp and position the workpiece, realize rapid clamping of the workpiece, solve the problem of long clamping time and low clamping efficiency in the background technology caused by manual use of bolts to press, shorten the auxiliary processing time, improve the workpiece clamping efficiency, and the tool fixture is simple to operate and low in manufacturing cost;

[0009] (2) The power mechanism can provide constant pressing force each time, which solves the problem in the background technology that the workpiece clamping force is different according to the clamping method of the operator, the workpiece is subjected to different pressing force, and the process size of the workpiece after processing may be affected by the clamping deformation caused by the pressing force, which can ensure the constancy of the clamping force and high reliability. The tool fixture provided by the application can realize one-time clamping processing of the workpiece, ensure the stability of the clamping processing size, and improve the processing efficiency of clamping.

[0010] Preferably, the limiting tool seat is fixed on the fixture base, the top of the top block is located in the limiting tool seat, and the bottom passes through the fixture base downward and is connected with the output end of the power mechanism.

[0011] Further preferably, the top block comprises a sliding seat and a boss, the boss is located on the surface of the sliding seat and is integrally connected with the sliding seat, and a blank hole is formed in the center of the boss.

[0012] Further preferably, the side wall of the sliding seat is slidably connected with the inner side wall of the fixture base through a guide flat key; and the bottom of the sliding seat is fixedly connected with the output end of the power mechanism.

[0013] Further preferably, the power mechanism is a hydraulic lathe, the main shaft of the hydraulic lathe extends into the bottom of the top block and is threadedly connected therewith; and the fixture base is fixed on the workbench surface of the hydraulic lathe through a flange.

[0014] Preferably, a machining cavity is formed in the limiting tool seat, and a positioning core seat is fixed on the inner side wall of the machining cavity; during clamping, the upper and lower surfaces of the middle part of the workpiece are clamped between the surface of the top block and the bottom surface of the positioning core seat.

[0015] Further preferably, a middle hole is formed in the middle of the bottom of the positioning core seat, the middle hole and the blank hole on the surface of the top block are on the same axis, and the working end of the positioning mandrel passes through the middle hole and the opening in the bottom of the workpiece in sequence and is embedded in the blank hole to position the workpiece.

[0016] Further preferably, the positioning mandrel comprises a mandrel stem, a mandrel base and a mandrel head connected in sequence, wherein the mandrel base has a diameter larger than the diameter of the opening in the bottom of the workpiece, and the mandrel head is connected with the workpiece through the opening and is embedded into the blank hole of the top block.

[0017] Further preferably, the upper surface of the positioning mandrel base is higher than the upper surface of the limiting tool holder, and is fixedly connected with the inner side of the limiting tool holder through the side block.

[0018] Further preferably, the cross section of the limiting tool holder is in the shape of a circular arc, and the workpiece is put into the processing cavity from the opening of the limiting tool holder. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present utility model will be explained in the mode of referring to the drawings, wherein:

[0020] Figure 1 It is the sectional view of the whole of the present utility model;

[0021] Figure 2 It is the structure schematic view of the whole of the present utility model (not containing positioning mandrel);

[0022] Figure 3 It is the plan view of the present utility model (not containing positioning mandrel);

[0023] Figure 4 It is the plan view of the top block of the present utility model.

[0024] Reference signs: limiting tool holder 1, processing cavity 11, positioning mandrel base 12, middle hole 121, side block 13, positioning mandrel 2, mandrel stem 21, mandrel base 22, mandrel head 23, top block 3, sliding seat 31, connecting hole 311, key block 312, boss 32, blank hole 321, power mechanism, main shaft 41, clamp base 5, keyway 51, workpiece 6. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the present utility model more clear and explicit, the present utility model will be further explained in detail below by combining with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present utility model, and are not used to limit the present utility model.

[0026] Example 1: as Figures 1 to 4The illustrated motorcycle engine starting gear fixing seat tool clamp includes a limiting tool seat 1, a positioning core shaft 2, a top block 3, and a power mechanism. The positioning core shaft 2 and the top block 3 are located in the limiting tool seat 1, and the top block 3 is below the positioning core shaft 2. The power mechanism is arranged below the limiting tool seat 1. The top block 3 is fixedly connected with the power mechanism. The workpiece 6 is placed in the limiting tool seat 1, and the bottom thereof is located between the positioning core shaft 2 and the top block 3. The top block 3 moves towards the positioning core shaft 2 under the action of the power mechanism to clamp the workpiece 6. The positioning core shaft 2 passes through the workpiece 6 to position the workpiece 6.

[0027] Compared with the background technology, the top block 3 of the tool clamp can automatically move towards the positioning core shaft 2 under the action of the power mechanism to clamp the workpiece 6. The positioning core shaft 2 positions the workpiece 6. Thus, the tool clamp completes the clamping and positioning of the workpiece 6 by the cooperation of the positioning core shaft 2 and the top block 3, realizes the rapid clamping of the workpiece 6, solves the problem of long clamping time and low clamping efficiency of the workpiece 6 in the background technology, shortens the auxiliary processing time, improves the clamping efficiency of the workpiece 6, is simple to operate, has low manufacturing cost, and can provide constant clamping force each time. The problem that the clamping force of the workpiece 6 is different, the clamping force of the workpiece 6 is different, and the process size of the workpiece 6 after processing may be affected by the clamping deformation of the clamping force in the background technology is solved. The clamping force is constant, the reliability is high, the tool clamp provided in the embodiment can realize one-time clamping processing of the workpiece 6, ensure the stability of the clamping processing size, and improve the clamping processing efficiency.

[0028] In the preferred design based on example 1, the power mechanism is selected as a hydraulic lathe, the limiting tool seat is fixed on the clamp base 5 by welding, the clamp base 5 is fixed on the workbench of the hydraulic lathe through flange connection, the top of the top contact block 3 is located in the limiting tool seat 1, and the bottom passes through the clamp base 5 downward and is connected with the output end of the hydraulic lathe. Specifically, the top contact block 3 includes a sliding seat 31 and a boss 32, the boss 32 is located on the upper surface of the sliding seat 31, both are integrally formed and on the same axis, and the boss 32 is further provided with a blank hole 321 in the center, the working end of the positioning mandrel 2 can pass through the bottom of the workpiece 6 and be embedded in the blank hole 321, so as to fix the opening in the center of the bottom of the workpiece 6, and the bottom of the sliding seat 31 is provided with a connecting hole 311, the main shaft 41 of the hydraulic lathe is inserted into the connecting hole 311 at the bottom of the sliding seat 31 and is threadedly connected with it, the main shaft 41 is driven to move up and down, and cooperates with the positioning mandrel 2 to realize the clamping and fixing of the workpiece 6 and the loosening and taking of the workpiece 6. In addition, the side wall of the sliding seat 31 is slidably connected with the inner side wall of the clamp base 5 through a guide flat key, that is, a key block 312 is fixed on the side wall of the sliding seat 31 along the length direction of the side wall, the key block 312 is connected with the key groove 51 in the inner side of the clamp base 5, and the top contact block 3 can be stably moved up and down in the clamp base 5 through the guide flat key connection, so that the shaft center does not deviate, and the top contact block 3 is guided.

[0029] In the preferred design based on example 1, the limiting tool seat 1 is provided with a machining cavity 11, and the inner side wall of the machining cavity 11 is fixed with a positioning core seat 12. When clamped, the upper and lower surfaces of the bottom of the workpiece 6 are clamped between the surface of the top contact block 3 and the bottom surface of the positioning core seat 12. The positioning core seat 12 is a conical table structure with a large upper part and a small lower part, and a middle hole 121 is formed in the middle of the bottom of the positioning core seat 12. The middle hole 121 is on the same axis as the blank hole 321 on the surface of the top contact block 3. The working end of the positioning mandrel 2 passes through the middle hole 121 and the opening in the bottom of the workpiece 6 in sequence and is embedded in the blank hole 321, so as to position the opening in the bottom of the workpiece 6. Specifically, the positioning mandrel 2 includes a core rod 21, a core table 22 and a core head 23 which are integrally connected in sequence from top to bottom. The diameter of the core table 22 is larger than the diameter of the opening in the bottom of the workpiece 6 and the diameter of the blank hole 321 of the top contact block 3. When clamped, the core head 23 passes through the opening of the workpiece 6 and is embedded in the blank hole 321 of the top contact block 3, so as to position the workpiece 6. The bottom surface of the workpiece 6 abuts against the surface of the top contact block 3, and the top surface of the workpiece 6 abuts against the bottom surfaces of the core table 22 and the positioning core seat 12. Therefore, the positioning core seat 12, the positioning mandrel 2 and the top contact block 3 cooperate to clamp the workpiece 6, so that the workpiece 6 can maintain stability during clamping.

[0030] Further, the surface of the positioning core seat 12 is higher than the surface of the limiting tool holder 1, and is fixedly connected with the inner side of the limiting tool holder 1 through the side block 13. The positioning core seat 12, the side block 13 and the limiting tool holder 1 can be fixed by welding or integrated forming. By setting the surface of the positioning core seat 12 to be higher than the surface of the limiting tool holder 1, the positioning core shaft 2 is more convenient to pass through the workpiece 6 to position it.

[0031] In embodiment 4, the shape of the limiting tool holder 1 is preferably designed based on embodiment 1. As shown in the figure, the cross section of the limiting tool holder 1 is in the shape of a circular arc. The workpiece 6 is placed into the processing cavity 11 from the opening thereof. The circular arc structure of the limiting tool holder 1 is more conducive to the irregularly shaped workpiece 6 being placed into the limiting tool holder 1 from the opening of the circular arc. Figure 4

[0032] In use, the jig base 5 is first fixed on the workbench of the hydraulic lathe, and the top block 3 is fixedly connected with the main shaft 41 of the hydraulic lathe. After the top tight force is adjusted, the positioning core shaft 2 is inserted into the positioning core seat 12. After the positions of the components of the tooling jig are adjusted, the workpiece 6 is placed into the limiting tool holder 1 and aligned with the positioning core shaft 2. The positioning core shaft 2 is pushed so that the working end thereof passes through the positioning core seat 12. Then, the switch of the control main shaft 41 of the hydraulic lathe is pressed. When the main shaft 41 moves towards the positioning core shaft 2, the top block 3 protrudes upwards beyond the surface of the jig base 5 and tightly presses the workpiece 6 against the bottom surface of the working end of the positioning core shaft 2 and the positioning core seat 12, thereby achieving the pressing of the workpiece 6. The core head 23 of the positioning core shaft 2 is connected with the opening of the workpiece 6 through the middle hole 121 of the positioning core seat 12 and is embedded into the blank hole 321 of the top block 3, thereby achieving the positioning of the workpiece 6. Thus, the clamping of the workpiece 6 is completed. Then, the positioning core shaft 2 is pulled out, the top block 3 is moved in the reverse direction and is retracted into the jig base 5, and the workpiece 6 is loosened, thereby achieving the release of the workpiece 6.

[0033] The top block 3 automatically extends and retracts under the action of the hydraulic lathe. The workpiece 6 is pressed against the limiting tool holder 1 through the sliding cooperation with the jig base 5, the key guidance and the cooperation with the positioning core seat 12, thereby achieving the clamping of the workpiece 6. The positioning of the workpiece 6 is achieved through the cooperation of the positioning core shaft 2 with the middle hole 121 of the positioning core seat 12 and the blank hole 321 of the top block 3. Thus, the clamping and loosening of the tooling jig are completed, the quick clamping of the workpiece 6 is achieved, the constant clamping force is ensured, the clamping efficiency of the workpiece 6 is improved, the operation is simple, the auxiliary machining time is shortened, the clamping cost of the workpiece 6 is low, the production cost is reduced, and the reliability is high.

[0034] ​The above embodiments only express the specific implementation of the present application, which is described in more detail and specifically, but cannot be understood as a limitation to the protection scope of the present application. It should be noted that for those skilled in the art, without departing from the technical concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A fixture for fixing a starting gear on a motorcycle engine, characterized in that: It includes a limiting fixture (1), a power mechanism arranged below the limiting fixture (1), and a positioning mandrel (2) and a top contact block (3) located inside the limiting fixture (1) and arranged vertically. The top contact block (3) is fixedly connected to the power mechanism. The workpiece (6) is placed inside the limiting fixture (1), and its bottom is located between the positioning mandrel (2) and the top contact block (3). Under the action of the power mechanism, the top contact block (3) moves towards the positioning mandrel (2) to clamp the workpiece (6), and the positioning mandrel (2) passes through the workpiece (6) to position it.

2. The motorcycle engine starter gear fixing fixture according to claim 1, characterized in that: The limiting fixture seat (1) is fixed on the clamp base (5). The top of the top block (3) is located inside the limiting fixture seat (1), and the bottom passes down through the clamp base (5) and is connected to the output end of the power mechanism.

3. The motorcycle engine starter gear fixing fixture according to claim 2, characterized in that: The top block (3) includes a sliding seat (31) and a boss (32). The boss (32) is located on the surface of the sliding seat (31) and is integrally connected with it. A blank hole (321) is opened in the center of the boss (32).

4. The motorcycle engine starter gear fixing fixture according to claim 3, characterized in that: The side wall of the sliding seat (31) is slidably connected to the inner side wall of the clamp base (5) via a guide key; the bottom of the sliding seat (31) is fixedly connected to the output end of the power mechanism.

5. A motorcycle engine starter gear fixing fixture according to claim 2 or claim 4, characterized in that: The power mechanism is a hydraulic lathe, the spindle (41) of the hydraulic lathe extends into the bottom of the top block (3) and is threadedly connected to it; the fixture base (5) is fixed on the worktable of the hydraulic lathe by a flange connection.

6. The motorcycle engine starter gear fixing fixture according to claim 1, characterized in that: The limiting fixture (1) has a processing cavity (11) inside. The inner side wall of the processing cavity (11) is fixed with a positioning core seat (12). When clamping, the upper and lower sides of the middle part of the workpiece (6) are clamped between the surface of the top connecting block (3) and the bottom surface of the positioning core seat (12).

7. A motorcycle engine starter gear fixing fixture according to claim 6, characterized in that: The positioning core seat (12) has a central hole (121) at the bottom center. The central hole (121) and the blank hole (321) on the surface of the top contact block (3) are on the same axis. The working end of the positioning core shaft (2) passes through the central hole (121) and the opening at the bottom of the workpiece (6) in sequence and is embedded in the blank hole (321) to position the workpiece.

8. A motorcycle engine starter gear fixing fixture according to claim 7, characterized in that: The positioning mandrel (2) includes a core rod (21), a core platform (22) and a core head (23) that are integrally connected in sequence. The diameter of the core platform (22) is larger than the diameter of the opening at the bottom of the workpiece (6). The core head (23) passes through the opening of the workpiece (6) and is connected to it, and is embedded in the blank hole (321) of the top connecting block (3).

9. A motorcycle engine starter gear fixing fixture according to claim 6, characterized in that: The upper surface of the positioning core seat (12) is higher than the upper surface of the limiting fixture seat (1), and is fixedly connected to the inner side of the limiting fixture seat (1) through the side block (13).

10. A motorcycle engine starter gear fixing fixture according to claim 6, characterized in that: The cross-section of the limiting fixture (1) is arc-shaped, and the workpiece (6) is placed into the processing cavity (11) from its opening.

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