A clamping tool for guiding pin grinding

Abstract

The utility model relates to the field of automobile parts production, specifically disclose a kind of clamping tool for guiding pin grinding, including tool base and fixed structure, tool base includes pin head fixed seat and pin body fixed seat, pin body fixed seat rear end is fixed with pin head fixed seat front end, pin head fixed seat upper portion is provided with pin head slot, pin body fixed seat upper portion is provided with pin body slot, pin head fixed seat rear end is provided with threaded hole, threaded hole is connected with rotating shaft in screw thread, rotating shaft front end is connected with limit block, by respectively setting the fixed seat of pin head and pin body, pin head can be placed in the slot of corresponding fixed seat by another pin body respectively, then limit block is used to make pin head rest on pin body fixed seat, and guiding pin can be fixed reliably.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing, specifically to a clamping fixture for grinding guide pins. Background Technology

[0002] Disc brakes are the most commonly used type of automotive brake. Their main components include the brake disc, brake caliper, brake pads, and guide pins. The guide pins connect the caliper and the caliper bracket. During braking, the guide pins ensure that the caliper can move axially along the guide pins, allowing the brake pads to accurately press against the brake disc and achieve the braking function.

[0003] During the production process, it is necessary to ensure that the guide pin has a smooth surface and accurate dimensions. Otherwise, an uneven guide pin surface will cause abnormal noise between the caliper and the guide pin. In severe cases, it will cause the caliper to move unevenly, the piston to stick, and the brake to fail. If the dimensions are inaccurate, if they are too small, the guide pin will wobble and the brake pads will tilt when braking, resulting in uneven wear of the brake pads and reducing their service life. If the dimensions are too large, the caliper will stick and the brake will fail.

[0004] Therefore, grinding the guide pins becomes a very important step in the production process. Since the pin head of the guide pin is generally hexagonal, the clamping fixtures that are generally used for column bodies cannot be used to clamp the guide pins. Although the fixtures that clamp from the middle of the guide pin body can clamp it firmly, they will damage the pin body during the clamping process. Therefore, a special grinding and clamping fixture for guide pins is needed to solve this problem. Utility Model Content

[0005] This utility model aims to solve the technical problems mentioned in the background section above, and proposes the following technical solutions:

[0006] A clamping fixture for grinding guide pins includes a fixture base, which comprises a pin head fixing seat and a pin body fixing seat. Both the pin head fixing seat and the pin body fixing seat are hollow structures. The bottom of the pin head fixing seat is a regular hexagonal structure, the front end of the pin head fixing seat is an open structure, and both the front and rear ends of the pin body fixing seat are open structures. The rear end of the pin body fixing seat is fixed to the front end of the pin head fixing seat. A pin head slot is provided on the top of the pin head fixing seat, and a pin body slot is provided on the top of the pin body fixing seat. A threaded hole is provided at the rear end of the pin head fixing seat, and a rotating shaft is threadedly connected to the threaded hole. A limit block is connected to the front end of the rotating shaft.

[0007] Preferably, a rotating block is connected to the rear end of the rotating shaft, and the rotating block is a regular hexagon.

[0008] Preferably, a telescopic pad is provided at the bottom of the pin fixing seat, a plurality of spring mounting slots are provided at the bottom of the pin fixing seat, a plurality of telescopic blocks are provided at the bottom of the telescopic pad, the plurality of telescopic blocks are respectively located in the plurality of spring mounting slots, a spring is connected to the bottom of the telescopic block, and the bottom of the spring is connected to the bottom of the spring mounting slot.

[0009] Preferably, a cover plate is provided on the pin slot, one end of the cover plate is hinged to the pin fixing seat, the other end of the cover plate is snapped to the pin fixing seat, and a fixing block is provided below the cover plate.

[0010] Preferably, the bottom of the fixing block is provided with an arc-shaped groove.

[0011] The beneficial effects of this utility model are:

[0012] 1. By setting separate fixing seats for the pin head and the pin body, the pin head can be replaced with the pin body and placed in the slot on the corresponding fixing seat. Then, the pin head is pressed against the pin body fixing seat by the limiting block, which can reliably fix the guide pin.

[0013] 2. By setting a telescopic pad at the bottom of the pin slot and then setting a cover plate that is hinged to the pin fixing seat, and a fixing block at the bottom of the cover plate, the guide pin can be pressed onto the telescopic pad to adjust the height of the guide pin. At the same time as adjusting the height, it can also fix the pin and prevent the pin from shaking and shifting during the grinding operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 Sectional view at point AA;

[0016] Figure 3 This is a cross-sectional view of the present invention during actual use;

[0017] Figure 4 This is a cross-sectional view of the pin fixing seat in Example 2.

[0018] In the diagram: 1. Tooling base; 1-1. Pin head fixing seat; 1-11. Pin head slot; 1-2. Pin body fixing seat; 1-21. Pin body slot; 1-22. Spring mounting slot; 2. Fixing structure; 3. Threaded hole; 4. Rotating shaft; 5. Limiting block; 6. Rotating block; 7. Telescopic pad; 8. Telescopic block; 9. Spring; 10. Cover plate; 11. Fixing block; 11-1. Arc-shaped groove; 12. Guide pin. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] In the description of this utility model, it should be understood that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The connection methods described by the terms "fixed connection" and "fixed setting" include, but are not limited to, "welding," "riveting," "adhesion," and "threaded connection." The terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0021] The terms “upper,” “lower,” “front,” “back,” “left,” “right,” “top,” “bottom,” “inner,” and “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 utility model 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 utility model.

[0022] Example 1

[0023] Reference Figure 1-3 A clamping fixture for grinding guide pins includes a fixture base 1, which includes a pin head fixing seat 1-1 and a pin body fixing seat 1-2. Both the pin head fixing seat 1-1 and the pin body fixing seat 1-2 are hollow structures. The bottom of the pin head fixing seat 1-1 is a regular hexagonal structure. The front end of the pin head fixing seat 1-1 is an open structure. The front and rear ends of the pin body fixing seat 1-2 are open structures. The rear end of the pin body fixing seat 1-2 is fixed to the front end of the pin head fixing seat 1-1. A pin head slot 1-11 is provided on the top of the pin head fixing seat 1-1, and a pin body slot 1-21 is provided on the top of the pin body fixing seat 1-2. A threaded hole 3 is provided at the rear end of the pin head fixing seat 1-1. A rotating shaft 4 is internally threaded into the threaded hole 3, and a limiting block 5 is connected to the front end of the rotating shaft 4.

[0024] Preferably, the rear end of the rotating shaft 4 is connected to the rotating block 6, and the rotating block 6 is a regular hexagon.

[0025] In actual operation, the pin head of the guide pin 12 is inserted into the pin head slot 1-11 on the pin head fixing seat 1-1. When it is inserted to the bottom, the rotating block 6 is rotated, so that the rotating shaft 4 drives the limiting block 5 to move towards the guide pin 12 until the limiting block 5 presses the guide pin 12 against the pin head fixing seat 1-2 to fix it. During the grinding process, because the pin head and the pin head slot 1-11 are both hexagonal structures, it can be ensured that the pin head will not rotate arbitrarily in the pin head slot 1-11.

[0026] Using this type of tooling to clamp the guide pin not only ensures a secure clamping but also prevents damage to the pin during the clamping process.

[0027] Example 2

[0028] Reference Figure 4 A telescopic pad 7 is provided at the bottom of the pin fixing seat 1-2. Three spring mounting slots 1-22 are provided at the bottom of the pin slot 1-21. Three telescopic blocks 8 are provided at the bottom of the telescopic pad 7. The three telescopic blocks 8 are inserted into the corresponding spring mounting slots 1-22 respectively. The bottom of the telescopic block 8 is connected to the spring 9. The bottom of the spring 9 is connected to the bottom of the spring mounting slot 1-22. A cover plate 10 is provided on the pin slot 1-21. One end of the cover plate 10 is hinged to the pin fixing seat 1-2. The other end of the cover plate 10 is snapped to the pin fixing seat 1-2. A fixing block 11 is provided below the cover plate 10. An arc-shaped groove 11-1 is provided at the bottom of the fixing block 11.

[0029] The telescopic pad 7 can be used to raise and lower the height of the guide pin 12. The size of the guide pin 12 varies depending on the vehicle model. When a smaller guide pin 12 is used for clamping, the gap between the pin and the pin fixing seat 1-2 will be large, which can easily cause displacement during grinding. If the pin is placed on the telescopic pad 7 and then pressed onto the telescopic pad by the fixing block 11, it can be ensured that the pin will not shake or shift during grinding.

Claims

1. A clamping fixture for grinding guide pins, comprising a fixture base (1), characterized in that, The tooling base (1) includes a pin head fixing seat (1-1) and a pin body fixing seat (1-2). Both the pin head fixing seat (1-1) and the pin body fixing seat (1-2) are hollow structures. The bottom of the pin head fixing seat (1-1) is a regular hexagonal structure. The front end of the pin head fixing seat (1-1) is an open structure. The front and rear ends of the pin body fixing seat (1-2) are open structures. The rear end of the pin body fixing seat (1-2) is fixed to the front end of the pin head fixing seat (1-1). A pin head slot (1-11) is provided above the pin head fixing seat (1-1). A pin body slot (1-21) is provided above the pin body fixing seat (1-2). A threaded hole (3) is provided at the rear end of the pin head fixing seat (1-1). A rotating shaft (4) is threadedly connected to the threaded hole (3). A limit block (5) is connected to the front end of the rotating shaft (4).

2. The clamping fixture for grinding guide pins according to claim 1, characterized in that, The rear end of the rotating shaft (4) is connected to a rotating block (6), which is a regular hexagon.

3. The clamping fixture for grinding guide pins according to claim 1, characterized in that, The bottom of the pin fixing seat (1-2) is provided with a telescopic pad (7), and the bottom of the pin fixing seat (1-2) is provided with a plurality of spring mounting grooves (1-22). The bottom of the telescopic pad (7) is provided with a plurality of telescopic blocks (8), and the plurality of telescopic blocks (8) are respectively located in the plurality of spring mounting grooves (1-22). The bottom of the telescopic block (8) is connected to a spring (9), and the bottom of the spring (9) is connected to the bottom of the spring mounting groove (1-22).

4. The clamping fixture for grinding guide pins according to claim 3, characterized in that, A cover plate (10) is provided on the pin slot (1-21). One end of the cover plate (10) is hinged to the pin fixing seat (1-2), and the other end of the cover plate (10) is snapped to the pin fixing seat (1-2). A fixing block (11) is provided below the cover plate (10).

5. The clamping fixture for grinding guide pins according to claim 4, characterized in that, The bottom of the fixing block (11) is provided with an arc-shaped groove (11-1).

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