Rack piston catheter hole punching device

Abstract

The utility model discloses a rack piston catheter hole punching device, comprising a base, a punching assembly, a first stopper, a second stopper and a third stopper, wherein the punching assembly, the first stopper, the second stopper and the third stopper are all mounted on the base, the punching assembly is arranged correspondingly to the third stopper, the first stopper and the second stopper are arranged correspondingly, and the first stopper, the second stopper and the third stopper form a cavity for fixing the rack piston. The rack piston can be effectively fixed by the first stopper, the second stopper and the third stopper, so as to prevent the rack piston from sliding during processing and effectively ensure the accuracy of punching.

Description

Technical Field

[0001] The utility model relates to the technical field of steering gear accessories processing, in particular to a rack piston conduit hole punching device. Background Art

[0002] The rack piston is one of the core components of the recirculating ball power steering gear. Its processing accuracy directly affects the quality and performance of the steering gear. Especially when processing the conduit hole on the rack piston, any slight deviation in processing accuracy will directly affect whether the recirculating ball can circulate. At present, when drilling holes in the rack piston, it is usually done manually by pressing the rack piston, and then drilling holes through a stamping device or an electric drill. Although this operation can meet the general rack drilling process, the operation accuracy is low and it is easy to hurt the operator's fingers, which poses a great safety hazard. Utility Model Content

[0003] In view of the above problems, the utility model proposes a rack piston catheter hole punching device, which can effectively fix the rack piston through the first limit block, the second limit block and the third limit block to prevent the rack piston from sliding during processing, thereby effectively ensuring the accuracy of the punching.

[0004] The technical solution adopted by the utility model is as follows: a rack piston catheter hole punching device, including a base, a punching assembly, a first limit block, a second limit block and a third limit block, the punching assembly, the first limit block, the second limit block and the third limit block are all installed on the base, the punching assembly is arranged correspondingly to the third limit block, the first limit block and the second limit block are arranged correspondingly, and the first limit block, the second limit block and the third limit block form a cavity for fixing the rack piston.

[0005] Optionally, the first limiting block is provided with a latching protrusion for engaging with the sector teeth on the rack piston.

[0006] Optionally, the first limiting block includes a first cushion block and a second cushion block, the second cushion block is located between the first cushion block and the second limiting block, the height of the first cushion block is the same as the height of the second cushion block, and the clamping protrusion is arranged on the first cushion block.

[0007] Optionally, a surface of the third limit block facing the rack piston is an inclined surface, and the inclined surface is inclined from top to bottom toward a surface away from the rack piston.

[0008] Optionally, the inclination angle of the inclined surface is 3 to 7°.

[0009] Optionally, the punching assembly includes a driving member and a push rod connected to the telescopic end of the driving member, and the push rod is arranged corresponding to the third limit block.

[0010] Optionally, the driving member is a hydraulic cylinder or a pneumatic cylinder.

[0011] Optionally, the latching protrusion and the first cushion block are an integrally formed structure.

[0012] The beneficial effects of the utility model are as follows: the rack piston is placed in the cavity, the first limit block abuts against one end of the rack piston, the second limit block abuts against the other end of the rack piston, and the third limit block abuts against the side of the rack piston away from the punching assembly, so that the rack piston is fixed in the cavity, which is convenient for the punching assembly to punch holes in the rack piston. The utility model has a reasonable structural design and is easy to operate. The first limit block, the second limit block and the third limit block can effectively fix the rack piston, prevent the rack piston from sliding during processing, and effectively ensure the accuracy of punching. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic top view of a rack piston catheter hole punching device according to an embodiment of the utility model;

[0014] Figure 2 A schematic diagram of the rack piston catheter hole punching device and the rack piston in cooperation with each other according to an embodiment of the utility model;

[0015] Figure 3 A schematic diagram of the third limit block of the rack piston catheter hole punching device proposed in an embodiment of the utility model.

[0016] The markings of the accompanying drawings are: 1. base; 2. punching assembly; 21. driving member; 22. push rod; 3. first limit block; 31. first cushion block; 311. latch; 32. second cushion block; 4. second limit block; 5. third limit block; 6. rack piston. DETAILED DESCRIPTION

[0017] The utility model is described in detail below in conjunction with the accompanying drawings.

[0018] like Figures 1 to 3As shown, a rack piston 6 catheter hole punching device includes a base 1, a punching assembly 2, a first stopper 3, a second stopper 4 and a third stopper 5. The punching assembly 2, the first stopper 3, the second stopper 4 and the third stopper 5 are all installed on the base 1. The punching assembly 2 is arranged correspondingly to the third stopper 5. The first stopper 3 and the second stopper 4 are arranged correspondingly. The first stopper 3, the second stopper 4 and the third stopper 5 form a cavity for fixing the rack piston 6. The rack piston 6 is placed in the cavity, the first stopper 3 abuts against one end of the rack piston 6, the second stopper 4 abuts against the other end of the rack piston 6, and the third stopper 5 abuts against the side of the rack piston 6 away from the punching assembly 2, so that the rack piston 6 is fixed in the cavity, so that the punching assembly 2 can punch holes on the rack piston 6. The utility model has reasonable structural design and is easy to operate. The first limit block 3, the second limit block 4 and the third limit block can effectively fix the rack piston 6 to prevent the rack piston 6 from sliding during processing, thereby effectively ensuring the accuracy of punching.

[0019] In this embodiment, if Figure 1 As shown, the first limiting block 3 is provided with a cam 311 for cooperating with the sector teeth on the rack piston 6. The bottom of the rack piston 6 is provided with sector teeth, and the groove between two adjacent sector teeth cooperates with the cam 311 to further limit the position of the rack piston 6. The cam and the first cushion block 31 are an integrally formed structure.

[0020] In this embodiment, if Figure 1 As shown, the first limit block 3 includes a first cushion block 31 and a second cushion block 32, the second cushion block 32 is located between the first cushion block 31 and the second limit block 4, the height of the first cushion block 31 is the same as the height of the second cushion block 32, and the clamping protrusion 311 is arranged on the first cushion block 31. The first cushion block 31 and the second cushion block 32 are mounted on the base 1 by screws. The second limit block 4 can be a cylindrical rod, a square rod or a special-shaped rod, and can be mounted on the base 1 by screws.

[0021] In this embodiment, if Figure 3 As shown, the side of the third limit block 5 facing the rack piston 6 is an inclined surface, and the inclined direction of the inclined surface is from top to bottom toward the side away from the rack piston 6. Under the action of the pressure of the punching assembly 2 and the inclined surface of the third limit block, the rack piston is pressed against the first limit block to achieve precise positioning. The inclination angle of the inclined surface is 3 to 7°. The angle of the inclined surface can be 3°, 5° or 7°.

[0022] In this embodiment, if Figure 1As shown, the punching assembly 2 includes a driving member 21 and a push rod 22 connected to the telescopic end of the driving member 21, and the push rod 22 is arranged corresponding to the third limit block 5. The driving member 21 drives the push rod 22 to move toward the rack piston 6 to punch the rack piston 6. The driving member 21 is a hydraulic cylinder or a pneumatic cylinder.

[0023] The above description is only a preferred embodiment of the utility model, and does not limit the patent protection scope of the utility model. Any equivalent structural transformation made using the contents of the utility model specification and drawings, directly or indirectly used in other related technical fields, is also included in the protection scope of the utility model.

Claims

1. A rack piston catheter hole punching device, characterized in that: It includes a base, a punching assembly, a first limit block, a second limit block and a third limit block, wherein the punching assembly, the first limit block, the second limit block and the third limit block are all installed on the base, the punching assembly and the third limit block are arranged correspondingly, the first limit block and the second limit block are arranged correspondingly, and the first limit block, the second limit block and the third limit block form a cavity for fixing the rack piston.

2. The rack piston catheter hole punching device according to claim 1, characterized in that: The first limiting block is provided with a locking protrusion for engaging with the sector-shaped teeth on the rack piston.

3. The rack piston catheter hole punching device according to claim 2, characterized in that: The first limiting block includes a first cushion block and a second cushion block, the second cushion block is located between the first cushion block and the second limiting block, the height of the first cushion block is the same as the height of the second cushion block, and the clamping protrusion is arranged on the first cushion block.

4. The rack piston catheter hole punching device according to claim 1, characterized in that: The side of the third limit block facing the rack piston is an inclined surface, and the inclined surface is inclined from top to bottom toward the side away from the rack piston.

5. The rack piston catheter hole punching device according to claim 4, characterized in that: The inclination angle of the inclined surface is 3 to 7 degrees.

6. The rack piston catheter hole punching device according to claim 1, characterized in that: The punching assembly includes a driving member and a push rod connected to the telescopic end of the driving member, and the push rod is arranged corresponding to the third limit block.

7. The rack piston catheter hole punching device according to claim 6, characterized in that: The driving member is a hydraulic cylinder or a pneumatic cylinder.

8. The rack piston catheter hole punching device according to claim 3, characterized in that: The clamping protrusion and the first cushion block are an integrally formed structure.

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