Grinding tool used after cladding of piston rod

Abstract

The grinding tool comprises a clamping body, a connecting piece and an abutting screw rod, the connecting piece comprises an adjusting cylinder screwed to the clamping body, an inserting rod is inserted into the inner end of the adjusting cylinder, the outer diameter of the inserting rod is equal to the diameter of a pin hole of a flat part of the piston rod, and a positioning plate is arranged on the inserting rod. According to the technical scheme, compared with an existing connecting piece, the inserting rod is additionally arranged, the inserting rod is continuously inserted into the pin hole along with screwing-in of the adjusting cylinder till the positioning plate abuts against the end of the pin hole, the piston rod can be positioned in the axial direction of the pin hole, and the clamping stability of the piston rod can be further improved.

Description

Technical Field

[0001] This application relates to the field of piston rod processing technology, and in particular to a tooling for grinding piston rods after cladding. Background Technology

[0002] When machining the piston rod after cladding, one method is to first machine the flat portion of the piston rod and then machine the magnetic ring hole. However, when machining the magnetic ring hole, existing three-jaw chucks can only clamp two points on the circumferential direction of the flat portion, which cannot guarantee clamping stability. Patent CN222404528U discloses a machining fixture for moving a jack piston rod. This fixture is positioned between the chuck and the piston rod, improving clamping stability. However, because this patent lacks an axial positioning mechanism along the pin hole of the flat portion, the stability of the piston rod still needs improvement. Utility Model Content

[0003] In view of this, the purpose of this application is to provide a tooling for grinding the piston rod after cladding, so as to position the piston rod axially along the pin hole of the flat portion.

[0004] The technical solution of this application is as follows:

[0005] This application provides a tooling for grinding a piston rod after cladding, including a clamping body, a connecting member, and an abutting screw. The connecting member includes an adjusting cylinder screwed into the clamping body, and an insert rod inserted into the inner end of the adjusting cylinder. The outer diameter of the insert rod is equal to the diameter of the pin hole on the flat part of the piston rod, and a positioning plate is provided on the insert rod.

[0006] Compared with existing connectors, the technical solution of this application adds a plug rod. As the adjusting cylinder is rotated forward, the plug rod is continuously inserted into the pin hole until the positioning plate abuts against the end of the pin hole. This can position the piston rod along the axial direction of the pin hole, which can further improve the stability of the piston rod being clamped.

[0007] In some implementations, the abutment screw is screwed onto the axis of the clamping body.

[0008] In some implementations, the adjusting cylinder is arranged perpendicular to the abutting screw.

[0009] In some implementations, the adjusting cylinders are arranged symmetrically on both sides of the clamping body.

[0010] In some implementations, a knob is provided at the outer end of the regulating cylinder.

[0011] In some implementations, the regulating cylinder has a limiting groove inside.

[0012] In some implementations, the limiting groove is parallel to the axis of the adjusting cylinder.

[0013] In some implementations, the outer wall of the plug rod is provided with a limiting strip that engages with the limiting groove.

[0014] In some implementations, the positioning plate is constructed as a disk.

[0015] In some implementations, the positioning plate and the plug rod are arranged coaxially. Attached Figure Description

[0016] Exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be understood that the embodiments described below are for illustrative purposes only and are not intended to limit the scope of this application. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the tooling for grinding the piston rod after cladding according to an embodiment of this application;

[0018] Figure label:

[0019] 10. Clamping body; 11. Cylinder; 12. Accommodating space;

[0020] 20. Connector; 21. Adjusting cylinder; 22. Insert rod; 23. Positioning plate; 24. Knob; 25. Limiting groove; 26. Limiting strip;

[0021] 30. Abutting screw. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description of this application is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this application and are not intended to limit this application.

[0023] In related technologies, when processing piston rods after cladding, one method involves first machining the flat portion of the piston rod and then machining the magnetic ring hole. However, when machining the magnetic ring hole, existing three-jaw chucks can only clamp two points on the circumferential direction of the flat portion, which cannot guarantee clamping stability. Patent CN222404528U discloses a machining fixture for moving jack piston rods. This fixture is positioned between the chuck and the piston rod, improving clamping stability. However, because this patent lacks an axial positioning mechanism along the pin hole of the flat portion, the stability of the piston rod still needs improvement.

[0024] In view of this, the purpose of this embodiment is to provide a tooling for grinding the piston rod after cladding, so as to position the piston rod axially along the pin hole of the flat portion.

[0025] Please see Figure 1In this embodiment, a tooling for grinding a piston rod after cladding includes a clamping body 10, a connecting member 20, and an abutting screw 30. The connecting member 20 includes an adjusting cylinder 21 screwed into the clamping body. An insert rod 22 is inserted into the inner end of the adjusting cylinder 21. The outer diameter of the insert rod 22 is equal to the diameter of the pin hole of the flat part of the piston rod. A positioning plate 23 is provided on the insert rod 22.

[0026] Compared with the existing connectors, the technical solution of this embodiment adds a plug rod 22. As the adjusting cylinder 21 is rotated, the plug rod 22 is continuously inserted into the pin hole until the positioning plate 23 abuts against the end of the pin hole. This can position the piston rod along the axial direction of the pin hole and further improve the stability of the piston rod being clamped.

[0027] It should be noted that this embodiment is a structural improvement on the connector disclosed in the patent with publication number CN222404528U, entitled "A Machining Fixture for Pushing a Jack Piston Rod". The main improvement is that the structure and principle of the connectors are different. The connector in this embodiment can position the flat part of the piston rod along the pin hole axial direction, which can further improve the stability of the piston rod being clamped.

[0028] In this embodiment, the first end of the clamping body 10 is a cylinder 11, which is clamped and fixed on a three-jaw chuck. The second end of the clamping body 10 is a concave receiving space 12, which is used to insert the flat part of the piston rod. The abutting screw 30 is screwed onto the axis of the cylinder 11, and the end of the abutting screw 30 extends into the receiving space 12 to abut against the center hole of the flat part.

[0029] In this embodiment, the adjusting cylinder 21 is a hollow cylindrical tube. The adjusting cylinder 21 is screwed onto the side wall of the receiving space 12 and is perpendicular to the side wall of the receiving space 12. At the same time, the adjusting cylinder 21 is arranged perpendicularly to the abutting screw 30. A circular knob 24 is welded to the outer end of the adjusting cylinder 21. The knob 24 makes it easier to rotate the adjusting cylinder 21. Meanwhile, a limiting groove 25 is provided on the inner wall of the adjusting cylinder 21, and the limiting groove 25 is parallel to the axis of the adjusting cylinder 21. The two adjusting cylinders 21 are symmetrically arranged on both sides of the clamping body 10.

[0030] In addition, the plug rod 22 is constructed as a solid rod, and the outer diameter of the plug rod 22 is equal to the diameter of the pin hole of the flat part of the piston rod. A positioning plate 23 is welded on the outer wall of the plug rod 22. The positioning plate 23 is constructed as a disc and is arranged coaxially with the plug rod 22. A limit strip 26 is welded on the plug rod 22 outside the positioning plate 23. The limit strip 26 engages with the limit groove 25 inside the adjusting cylinder 21, so that the plug rod 22 can rotate synchronously with the adjusting cylinder 21.

[0031] In use, insert the inner end of the plug rod 22 into the pin hole of the flat part of the piston rod, and then rotate the adjusting cylinder 21. As the adjusting cylinder 21 is continuously rotated, the plug rod 22 is continuously pushed into the pin hole until the positioning plate 23 abuts against the end of the pin hole. The positioning plates 23 on both sides can be used to position the piston rod along the axial direction of the pin hole. With the abutting screw abutting against the center hole of the flat part, the stability of the piston rod being clamped can be ensured.

[0032] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A post-cladding grinding tool for a piston rod, comprising a clamping body, a connecting piece and an abutment screw, characterized in that The connecting piece comprises an adjusting cylinder screwed to the clamping body, an insertion rod is inserted into the inner end of the adjusting cylinder, the outer diameter of the insertion rod is equal to the diameter of the pin hole of the flat part of the piston rod, and a positioning plate is arranged on the insertion rod.

2. The post-cladding grinding processing tool for a piston rod according to claim 1, characterized in that, The abutting screw is screwed at the axis of the clamping body.

3. The post-cladding grinding processing tool for a piston rod according to claim 2, characterized in that, The adjusting cylinder is arranged perpendicularly to the abutting screw.

4. The post-cladding grinding processing tool for a piston rod according to claim 3, characterized in that, The adjusting cylinder is arranged symmetrically on both sides of the clamping body.

5. The post-cladding grinding processing tool for a piston rod according to claim 4, characterized in that, A knob is arranged at the outer end of the adjusting cylinder.

6. The post-cladding grinding processing tool for a piston rod according to claim 5, characterized in that, A limiting groove is arranged inside the adjusting cylinder.

7. The post-cladding grinding processing tool for a piston rod according to claim 6, characterized in that, The limiting groove is parallel to the axis of the adjusting cylinder.

8. The post-cladding grinding processing tool for a piston rod according to claim 7, characterized in that, A limiting strip is arranged on the outer wall of the insertion rod and is clamped in the limiting groove.

9. The post-cladding grinding processing tool for a piston rod according to claim 8, characterized in that, The positioning plate is disc-shaped.

10. The post-cladding grinding processing tool for a piston rod according to claim 9, characterized in that, The positioning plate is coaxially arranged with the insertion rod.

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