A grinding fixture for machining a guide pin

Abstract

The utility model provides a kind of grinding fixture for guide pin processing, including shell, clamping assembly and positioning mechanism, the bottom surface and side surface of shell are equipped with first slotted hole and second slotted hole respectively, the bottom surface of shell is welded with support rod, the other end of support rod is welded in the surface of first disc, the side surface of shell is welded with fixed plate, the bottom surface of first disc is connected with motor, the top surface of shell is welded with square plate, the device is positioned mechanism by installation, pull the circular baffle of first spring rod and second spring rod end portion, i.

Description

Technical Field

[0001] This utility model relates to the field of grinding fixture technology, specifically a grinding fixture for machining guide pins. Background Technology

[0002] Grinding fixtures eliminate machining deviations through rigid support and precise positioning, ensuring the consistency of geometric accuracy in the grinding process. At the same time, they enable rapid batch clamping to improve production efficiency. According to the existing technology, such as the positioning pin of a fixture described in Chinese patent document CN215470688U, the technical solution disclosed therein involves introducing cutting fluid at a certain pressure into the cutting fluid supply channel. The cutting fluid is then sprayed out through the cutting fluid outlet channel via the cutting fluid distribution loop to rinse the positioning pin, thereby keeping the positioning pin clean and avoiding the impact of residual chips on the positioning pin on the positioning accuracy.

[0003] According to its publicly available technical solutions, the existing technology fixes the guide pin to the top surface of the fixture. When it is necessary to replace the guide pin of a different size, the size of the fixture needs to be readjusted. This process is cumbersome and time-consuming, which reduces the clamping efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a grinding fixture for processing guide pins, thereby solving the problems mentioned in the background. This invention uses an installed clamping assembly, where a motor drives a threaded rod to rotate, which in turn moves a rubber protrusion downward to clamp the guide pin. This avoids the need for frequent manual adjustment of the fixture due to differences in guide pin dimensions, as is the case in traditional methods. Furthermore, it eliminates the need for manual tightening of screws to clamp the guide pins, thus improving clamping efficiency and ease of operation.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a grinding fixture for processing guide pins, comprising a grinding fixture body, the grinding fixture body comprising a housing, a clamping assembly and a positioning mechanism, wherein the bottom surface and the side surface of the housing are respectively provided with a first strip-shaped hole and a second strip-shaped hole, a support rod is welded to the bottom surface of the housing, the other end of the support rod is welded to the surface of a first disc, a fixing plate is welded to the side surface of the housing, a motor is connected to the bottom surface of the first disc, and a square plate is welded to the top surface of the housing.

[0006] Furthermore, the clamping assembly includes a sliding rod, a threaded rod, and a short rod, with the end of the sliding rod inserted into the interior of the second strip-shaped hole, and rubber protrusions connected to the surface of the sliding rod.

[0007] Furthermore, a pull rod is welded to the bottom surface of the sliding rod, and a circular hole is opened on the surface of the pull rod, with the end of the pull rod passing through the interior of the first strip-shaped hole.

[0008] Furthermore, the end of the short rod is inserted into the inside of the circular hole, a fixing rod is inserted into the surface of the short rod, the end of the fixing rod is welded to the surface of the first disc, and a threaded hole is opened on the surface of the short rod, with the threaded rod inserted into the inside of the threaded hole.

[0009] Furthermore, the end of the threaded rod is connected to the output port of the motor, the threaded rod passes through the surface of the first disk, a support column is welded to the bottom surface of the first disk, and the other end of the support column is welded to the top surface of the second disk.

[0010] Furthermore, the positioning mechanism includes a first U-shaped plate, a third U-shaped plate, a first spring rod, and a second spring rod, the ends of which both pass through the surface of the fixed plate.

[0011] Furthermore, both the first and second spring rods have circular baffles welded to their ends, the other end of the first spring rod is welded to the side of the first U-shaped plate, and the other end of the second spring rod is welded to the side of the third U-shaped plate.

[0012] Furthermore, a connecting rod is welded to the top surface of the first U-shaped plate, and a second U-shaped plate is welded to the other end of the connecting rod.

[0013] The beneficial effects of this utility model are:

[0014] 1. The grinding fixture for machining guide pins uses a clamping assembly to rotate the threaded rod driven by a motor, which in turn moves the rubber protrusion downward to clamp the guide pin. This avoids the need for frequent manual adjustment of the fixture due to differences in guide pin size in traditional methods. At the same time, it eliminates the need for manual tightening of screws to clamp the guide pins one by one, thus improving clamping efficiency and ease of operation.

[0015] 2. The grinding fixture for processing guide pins, through the installed positioning mechanism, pulls the circular baffles at the ends of the first and second spring rods to form a stable positioning space surrounded by three U-shaped plates. The guide pin is inserted into the space and the first and second spring rods are reset. At this time, the three U-shaped plates constrain the guide pin from multiple directions, preventing the guide pin from tilting in the initial stage and during the subsequent grinding process. This ensures the stability of the guide pin before and during the grinding operation, and improves the consistency and reliability of the processing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of a grinding fixture for machining guide pins according to this utility model;

[0017] Figure 2 This is a schematic diagram of the short rod of a grinding fixture for machining guide pins according to this utility model;

[0018] Figure 3 This is a schematic diagram of the clamping assembly of a grinding fixture for machining guide pins according to this utility model;

[0019] Figure 4 This is a schematic diagram of the positioning mechanism of a grinding fixture for machining guide pins according to this utility model;

[0020] In the diagram: 1. Housing; 2. Clamping assembly; 3. Positioning mechanism; 4. First disc; 5. Support column; 6. Second disc; 7. Motor; 8. Threaded rod; 9. Fixing rod; 10. Support rod; 11. Short rod; 12. Pull rod; 13. First slotted hole; 14. Second slotted hole; 15. Square plate; 16. First spring rod; 17. Sliding rod; 18. Rubber protrusion; 19. First U-shaped plate; 20. Second U-shaped plate; 21. Third U-shaped plate; 22. Fixing plate; 23. Second spring rod. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1 to 4 This utility model provides the following technical solution: a grinding fixture for processing guide pins, including a grinding fixture body, the grinding fixture body including a housing 1, a clamping assembly 2 and a positioning mechanism 3, the bottom surface and the side surface of the housing 1 are respectively provided with a first strip hole 13 and a second strip hole 14, a support rod 10 is welded to the bottom surface of the housing 1, the other end of the support rod 10 is welded to the surface of a first disc 4, a fixing plate 22 is welded to the side surface of the housing 1, a motor 7 is connected to the bottom surface of the first disc 4, and a square plate 15 is welded to the top surface of the housing 1. The positioning mechanism 3 ensures that the guide pin is in a vertical state. When the motor 7 is turned on, the motor 7 drives the threaded rod 8 to rotate, thereby moving the rubber protrusion 18 downward to clamp the guide pin.

[0023] In this embodiment, the clamping assembly 2 includes a sliding rod 17, a threaded rod 8, and a short rod 11. The end of the sliding rod 17 is inserted into the second strip-shaped hole 14. A rubber protrusion 18 is connected to the surface of the sliding rod 17. A pull rod 12 is welded to the bottom surface of the sliding rod 17. A circular hole is formed on the surface of the pull rod 12. The end of the pull rod 12 passes through the first strip-shaped hole 13. The end of the short rod 11 is inserted into the circular hole. A fixing rod 9 is inserted into the surface of the short rod 11. The end of the fixing rod 9 is welded... On the surface of the first disk 4, a threaded hole is formed on the surface of the short rod 11. The threaded rod 8 is inserted into the threaded hole. The end of the threaded rod 8 is connected to the output port of the motor 7. The threaded rod 8 passes through the surface of the first disk 4. A support column 5 is welded to the bottom surface of the first disk 4. The other end of the support column 5 is welded to the top surface of the second disk 6. The motor 7 drives the threaded rod 8 to rotate. The rotation of the threaded rod 8 causes the short rod 11 to move downward, which in turn moves the rubber protrusion 18 downward to clamp the guide pin.

[0024] In this embodiment, the positioning mechanism 3 includes a first U-shaped plate 19, a third U-shaped plate 21, a first spring rod 16, and a second spring rod 23. The ends of the first spring rod 16 and the second spring rod 23 both pass through the surface of the fixing plate 22. Circular baffles are welded to the ends of the first spring rod 16 and the second spring rod 23. The other end of the first spring rod 16 is welded to the side of the first U-shaped plate 19, and the other end of the second spring rod 23 is welded to the side of the third U-shaped plate 21. A connecting rod is welded to the top surface of the first U-shaped plate 19, and the other end of the connecting rod is welded to the second U-shaped plate. Pulling the circular baffles at the ends of the first spring rod 16 and the second spring rod 23 creates a gap between the third U-shaped plate 21 and the first U-shaped plate 19. A guide pin is inserted into the gap. Releasing the circular baffles at the ends of the first spring rod 16 and the second spring rod 23 completes the vertical correction of the guide pin.

[0025] Working principle: In the initial state, the third U-shaped plate 21 is inserted between the first U-shaped plate 19 and the second U-shaped plate 20. Pulling the circular baffles at the ends of the first spring rod 16 and the second spring rod 23 causes the first spring rod 16 and the second spring rod 23 to move. The displacement of the first spring rod 16 causes the first U-shaped plate 19 and the second U-shaped plate 20 to move, and the displacement of the second spring rod 23 causes the third U-shaped plate 21 to move, causing the third U-shaped plate 21 to disengage from between the first U-shaped plate 19 and the second U-shaped plate 20 and to connect with the first U-shaped plate 19 and the second U-shaped plate 20. A gap is created between the molded plates 20. At this time, a guide pin is inserted into the gap. When the end of the guide pin contacts the surface of the fixed plate 22, the circular baffles at the ends of the first spring rod 16 and the second spring rod 23 are released. The first spring rod 16 and the second spring rod 23 move back to their initial positions. The third U-shaped plate 21 is reinserted between the first U-shaped plate 19 and the second U-shaped plate 20, and guides the guide pin to prevent it from tilting. The motor 7 is turned on, and the motor 7 drives the threaded rod 8 to rotate. The rotation of the threaded rod 8 causes the short rod 11 to move downwards. The downward displacement of rod 11 causes pull rod 12 to move downward. The displacement of pull rod 12 causes sliding rod 17 to move downward along the second slot 14. The displacement of sliding rod 17 causes rubber protrusion 18 to move synchronously. During the downward movement of rubber protrusion 18, it contacts the surface of guide pin. When rubber protrusion 18 moves downward slowly until it stops, motor 7 is turned off. At this time, the clamping work of guide pin is completed. After the guide pin is ground, motor 7 is turned on. Motor 7 drives threaded rod 8 to rotate. The rotation of threaded rod 8 is linked to sliding rod 17 and rubber protrusion 18 moving upward. When rubber protrusion 18 moves downward... When step 18 moves upwards to a position where it no longer contacts the guide pin, the clamping of the guide pin is released, the motor 7 is turned off, and the circular baffles at the ends of the first spring rod 16 and the second spring rod 23 are pulled, causing the third U-shaped plate 21 to disengage from between the first U-shaped plate 19 and the second U-shaped plate 20. The guide pin is removed, and the first spring rod 16 and the second spring rod 23 are released. The first spring rod 16 and the second spring rod 23 return to their initial positions under the action of the spring force. The displacement of the first spring rod 16 and the second spring rod 23 causes the first U-shaped plate 19 and the third U-shaped plate 21 to return to their initial positions synchronously.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A grinding fixture for machining guide pins, comprising a grinding fixture body, characterized in that: The grinding fixture body includes a housing (1), a clamping assembly (2), and a positioning mechanism (3). The bottom and side surfaces of the housing (1) are respectively provided with a first strip hole (13) and a second strip hole (14). A support rod (10) is welded to the bottom surface of the housing (1). The other end of the support rod (10) is welded to the surface of the first disc (4). A fixing plate (22) is welded to the side surface of the housing (1). A motor (7) is connected to the bottom surface of the first disc (4). A square plate (15) is welded to the top surface of the housing (1).

2. The grinding fixture for machining guide pins according to claim 1, characterized in that: The clamping assembly (2) includes a sliding rod (17), a threaded rod (8), and a short rod (11). The end of the sliding rod (17) is inserted into the interior of the second strip hole (14), and the surface of the sliding rod (17) is connected with rubber protrusions (18).

3. The grinding fixture for machining guide pins according to claim 2, characterized in that: A pull rod (12) is welded to the bottom surface of the sliding rod (17). A round hole is opened on the surface of the pull rod (12), and the end of the pull rod (12) passes through the interior of the first strip hole (13).

4. A grinding fixture for machining guide pins according to claim 3, characterized in that: The end of the short rod (11) is inserted into the inside of the circular hole. A fixing rod (9) is inserted into the surface of the short rod (11). The end of the fixing rod (9) is welded to the surface of the first disc (4). A threaded hole is opened on the surface of the short rod (11). The threaded rod (8) is inserted into the inside of the threaded hole.

5. A grinding fixture for machining guide pins according to claim 4, characterized in that: The end of the threaded rod (8) is connected to the output port of the motor (7). The threaded rod (8) passes through the surface of the first disk (4). A support column (5) is welded to the bottom surface of the first disk (4). The other end of the support column (5) is welded to the top surface of the second disk (6).

6. A grinding fixture for machining guide pins according to claim 1, characterized in that: The positioning mechanism (3) includes a first U-shaped plate (19), a third U-shaped plate (21), a first spring rod (16) and a second spring rod (23), the ends of the first spring rod (16) and the second spring rod (23) both passing through the surface of the fixing plate (22).

7. A grinding fixture for machining guide pins according to claim 6, characterized in that: Both the first spring rod (16) and the second spring rod (23) have circular baffles welded to their ends. The other end of the first spring rod (16) is welded to the side of the first U-shaped plate (19), and the other end of the second spring rod (23) is welded to the side of the third U-shaped plate (21).

8. A grinding fixture for machining guide pins according to claim 7, characterized in that: A connecting rod is welded to the top surface of the first U-shaped plate (19), and a second U-shaped plate (20) is welded to the other end of the connecting rod.

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