Pin press-in quick change tool
By designing a quick-change tool for pressing pins, and utilizing a limiting step surface and spring structure, the tool enables rapid pin changing and precise pressing, solving the problem of inaccurate depth control in pin assembly and improving the stability and quality of pin assembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUIZHOU HONGLIN MACHINERY
- Filing Date
- 2023-11-15
- Publication Date
- 2026-07-03
AI Technical Summary
During the pin assembly process, existing technology makes it difficult to precisely control the pressing depth, which can lead to the pin being pressed out of place or the depth exceeding the requirements, resulting in pin pressing failure and unstable quality.
A quick-change tool for pressing pins was designed, including a quick-change sleeve, a bracket, a V-groove, a pressing assembly, and a core cone. The tool achieves quick pin changing and precise pressing through a limiting step surface and a spring structure. The V-groove structure of the bracket ensures the verticality of the pin, and the core cone structure maintains contact with the end face of the pin. The open design facilitates observation of the pressing effect.
This achieves stable pin quality and rapid changeover, reduces processing time, minimizes the risk of hand injuries, ensures the perpendicularity of the pin to the end face of the part, reduces the risk of pin deformation and crushing, and improves the actual quality of the pressed pins.
Smart Images
Figure CN117428452B_ABST
Abstract
Description
Technical Field
[0001] This invention pertains to an assembly tool, specifically a quick-change tool for pressure pins. Background Technology
[0002] In pin assembly, the pin and the product generally need to have an interference fit, i.e., a tight fit. Pins are typically less than 8mm in diameter and less than 12mm in length. During assembly, the pin cannot be directly fixed by hand, and the pressing depth of the pin cannot be precisely controlled. This can lead to misalignment, exceeding the required depth, pin pressing failure, and inconsistent quality. Therefore, a pin pressing tool is needed to assist in completing the pin pressing task. Summary of the Invention
[0003] The purpose of this invention is to provide a quick-change tool for pressing pins. This invention can effectively reduce processing time, stabilize the quality of pressed pins, and is compatible with different types of pins.
[0004] The technical solution of the present invention is: a quick-change tool for pressing pins, including a quick-change sleeve, a limiting step surface provided on the top end face of the quick-change sleeve, a bracket provided below the quick-change sleeve, a through V-groove provided on the bracket along the axial direction, and a pressing component for pressing the pin against the V-groove on the bracket; a core cone is slidably connected inside the quick-change sleeve, and a limiting boss is provided at the top end of the core cone, and the limiting boss is limited along the axial direction by the limiting step surface.
[0005] In the aforementioned quick-change pin tool, the limiting step surface includes one or more sets, which are distributed in a stepped manner along the circumference on the top end face of the quick-change sleeve; the depth to which the pin is pressed into the part is determined by the axial depth of the corresponding limiting step surface.
[0006] In the aforementioned quick-change tool for the pin, the clamping assembly includes a clamping pin, one end of which serves as the clamping end for pressing against the pin, and the other end extends out of the bracket as the movable end.
[0007] In the aforementioned quick-change tool for the pressure pin, a spring is fitted on the pressure pin between the pressure end and the bracket.
[0008] In the aforementioned quick-change tool for the pressure pin, the quick-change sleeve and the bracket are separate structures.
[0009] In the aforementioned quick-change tool for the pressure pin, the bottom end of the quick-change sleeve is also provided with a positioning groove, which can be fastened onto the bracket.
[0010] In the aforementioned quick-change tool for the pressure pin, the quick-change sleeve and the bracket are an integral structure.
[0011] In the aforementioned quick-change tool for the pressure pin, the outer diameter of the bottom end of the quick-change sleeve is larger than the outer diameter of the bracket.
[0012] The advantages of this invention are: it provides a reliable tool for pressing pins and enables rapid changeover within a certain pin size range. The V-groove structure of the bracket and the stepped structure of the limiting step surface can be manufactured according to the insertion depth requirements of the pin, enabling rapid conversion and reducing preparation time; the unique spring clamping structure frees up the hands, reducing the risk of hand injury; the unique V-groove structure of the bracket ensures that the pin is always vertical, guaranteeing the perpendicularity of the pin to the end face of the part during pressing; the unique core cone structure maintains constant contact with the end face of the pin, reducing the risk of pin deformation; the open structure design allows for monitoring the pin pressing effect at any time during the pressing process, facilitating observation; it reduces the risk of pin pressing failure, reduces pin damage, and improves the overall quality of the pressed pin. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of a quick-change tool for pressing pins;
[0014] Figure 2 This is a two-view diagram of a quick-change tool for pressing pins.
[0015] In the diagram: 1-Spring, 2-Pressure pin, 3-Pin, 4-Bracket, 5-Quick change sleeve, 6-Core cone, 7-Limiting step surface, 8-V-groove, 9-Limiting boss, 10-Positioning groove. Detailed Implementation
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.
[0017] Example 1. A quick-change tool for pressing pins, configured as follows: Figure 1-2 As shown, it includes a quick-change sleeve 5, the top end face of which is provided with a limiting step surface 7, and a bracket 4 is provided below the quick-change sleeve 5. The bracket 4 is provided with a through V-groove 8 along the axial direction, and a clamping component is also provided on the bracket 4 for pressing the pin 3 against the V-groove 8. A core cone 6 is slidably connected inside the quick-change sleeve 5. The top end of the core cone 6 is provided with a limiting boss 9, and the limiting boss 9 is limited along the axial direction by the limiting step surface 7.
[0018] The limiting step surface 7 includes one or more sets and is distributed in a stepped manner along the circumference on the top end face of the quick-change sleeve 5; the depth to which the pin 3 is pressed into the part is determined by the axial depth of the corresponding limiting step surface 7.
[0019] The clamping assembly includes a clamping pin 2, one end of which serves as a clamping end to press against the pin 3, and the other end extends out of the bracket 4 as a movable end.
[0020] A spring 1 is fitted on the clamping pin 2 between the clamping end and the bracket 4.
[0021] The quick-change sleeve 5 and the bracket 4 are separate structures.
[0022] The quick-change sleeve 5 is also provided with a positioning groove 10 at the bottom, which can be fastened to the bracket 4.
[0023] The quick-change sleeve 5 and the bracket 4 are integrated into one piece.
[0024] The outer diameter of the bottom end of quick-change sleeve 5 is larger than the outer diameter of bracket 4.
[0025] In this invention, before pressing the pin, the pin 3 is placed in the V-groove 8 of the bracket 4. At this time, the clamping pin 2 is fixed to the pin 3 by the elastic force of the spring 1. Then, the pin 3 is aligned with the hole to be pressed in, and any end face of the bracket 4 contacts the surface of the part to be pressed in, completing the pin alignment. Then, the core cone 6 is inserted into the quick-change sleeve 5, and the limiting step surface 7 of a suitable height is selected to control the pressing depth of the pin 3. Then, the quick-change sleeve 5 and the core cone 6 are placed on the bracket 4. Because the small end diameter of the quick-change sleeve is larger than the outer circle of the bracket, the risk of injuring the hand can be avoided. At this time, before the pin 3 is pressed in, the pin 3 will push the core cone 6 out to a certain height. At this time, the top of the core cone 6 is continuously struck with a hammer until the core cone 6 is limited by the limiting boss 9 and cannot move. At this time, the pin 3 has completed the pressing work according to the specific requirements. When pressing in other types of pins 3, the pressing work can be quickly completed by changing the quick-change sleeve 5. This invention effectively avoids the risk of pins being bent or damaged, and has the advantages of quick changeover and reusability.
[0026] The quick-change sleeve 5 has multiple sets of limiting step surfaces 7 distributed in a stepped manner along the circumference at its top end to control the pin pressing depth; the quick-change sleeve 5 and the bracket 4 can also be an integral structure, in which case the quick-change function of pressing the pin can be controlled by changing the length of the core cone 6 to control the pin pressing depth.
Claims
1. A quick-change tool for pressing pins, characterized in that: The device includes a quick-change sleeve with a limiting step surface on its top end face. A bracket is located below the quick-change sleeve, and the bracket has a through V-groove along its axial direction. A clamping assembly is also provided on the bracket to press a pin against the V-groove. A core cone is slidably connected inside the quick-change sleeve, and a limiting boss is located at the top of the core cone. The limiting boss is limited axially by the limiting step surface. The limiting step surface includes one or more sets, distributed in a stepped manner along the circumferential direction on the top end face of the quick-change sleeve. The depth to which the pin is pressed into the part is determined by the axial depth of the corresponding limiting step surface. The clamping assembly includes a clamping pin, one end of which serves as the clamping end for pressing against the pin, and the other end protruding from the bracket as a movable end. A spring is fitted on the clamping pin between the clamping end and the bracket.
2. The quick-change tool for the pressure pin according to claim 1, characterized in that: The quick-change sleeve and the support are separate structures.
3. The quick-change tool for the pressure pin according to claim 2, characterized in that: The quick-change sleeve is also equipped with a positioning groove at the bottom, which can be fastened to the bracket.
4. The quick-change tool for the pressure pin according to claim 1, characterized in that: The quick-change sleeve and the support are integrated into one piece.
5. The quick-change tool for the pressure pin according to claim 1, characterized in that: The outer diameter of the bottom end of the quick-change sleeve is larger than the outer diameter of the bracket.