Flat wire pin shaft chamfering apparatus

Abstract

The utility model relates to a kind of flat wire pin shaft chamfering equipment, including workbench, sand wheel rotated by motor drive and positioning tool, the positioning tool includes: locating seat, with the direction sand wheel, for the insertion hole of pin shaft;Lifting seat is connected below the locating seat, for adjusting the height of the locating seat;Fixed seat is set on the workbench, the lifting seat can be moved back and forth along the radial direction of the sand wheel relative to the fixed seat;Adjusting assembly is connected between the fixed seat and lifting seat, and the position of lifting seat and locating seat relative to sand wheel in radial direction is adjusted by the adjusting assembly.The utility model solves the core problem of inaccurate circumferential positioning when chamfering flat wire pin shaft by insertion hole type locating seat design;Through height and radial distance adjusting mechanism, the quick adaptability of equipment to multiple specifications pin shaft and the accurate controllability of chamfering parameter are realized, and production efficiency and equipment flexibility are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of chamfering equipment technology, and in particular to a flat wire pin chamfering equipment. Background Technology

[0002] Flat wire pins are one of the key connecting components in chains. They are usually made of high-strength steel wire or steel strip through processes such as cold heading and stamping. Their cross-section is non-circular, such as rectangular, elliptical, or near-circular with parallel planes.

[0003] In the manufacturing process of flat wire pins, chamfering is a crucial step. Currently, the chamfering of flat wire pins in chains is mainly done using standard benchtop chamfering machines, lathes equipped with chamfering tools, or simple vibratory / roller finishing equipment. However, the non-cylindrical nature of flat wire pins makes it difficult to achieve stable, accurate, and rapid positioning in general-purpose fixtures, resulting in frequent model changes, long adjustment times, and complex fixture designs.

[0004] Chinese utility model patent CN220296536U discloses a double-headed chamfering device for conveyor chain pins. This device uses a swing cylinder to drive a rotary worktable to rotate 180 degrees. After processing one end of the pin, the pin springs into the rotary worktable, rotates 180 degrees, and is pushed back into the spring chuck to process the other end. After processing, the pin pops out, and the entire pin is processed. However, this device is only suitable for chamfering cylindrical pins and cannot chamfer flat wire pins. Utility Model Content

[0005] The purpose of this invention is to provide a flat wire pin chamfering device to solve the problems mentioned in the background art.

[0006] The above-mentioned objective of this utility model is achieved through the following technical solution: a flat wire pin chamfering device, comprising a worktable, a grinding wheel driven by a motor, and a positioning fixture, wherein the positioning fixture includes:

[0007] A positioning seat is disposed on the radial side of the grinding wheel and has an insertion hole pointing towards the grinding wheel for inserting a pin.

[0008] A lifting seat, connected below the positioning seat, is used to adjust the height of the positioning seat;

[0009] A fixed seat is provided on the worktable, and the lifting seat can move back and forth relative to the fixed seat along the radial direction of the grinding wheel;

[0010] An adjustment component is connected between the fixed seat and the lifting seat, and the position of the lifting seat and the positioning seat relative to the grinding wheel in the radial direction is adjusted by the adjustment component.

[0011] Preferably, the insertion hole is inclined, with one end near the grinding wheel tilted downward relative to the other end.

[0012] Preferably, the lower end of the positioning seat is provided with a slot, and the upper end of the lifting seat is engaged in the slot.

[0013] Preferably, the upper surface of the lifting seat is an inclined surface, and its inclination angle is consistent with the inclination angle of the socket.

[0014] Preferably, the sockets are arranged in a plurality of horizontally parallel rows, and adjacent sockets are interconnected.

[0015] Preferably, the lifting seat includes a base body and a lifting body, the base body and the lifting body are slidably connected and connected by a first positioning bolt, and the base body is slidably mounted on the workbench and connected by a second positioning bolt.

[0016] Preferably, the lifting body is provided with a vertical first long slot, and the first positioning bolt passes through the first long slot.

[0017] Preferably, the base body is provided with a second elongated slot, and a second positioning bolt is inserted into the second elongated slot.

[0018] Preferably, the adjusting assembly includes an adjusting bolt, which is movably mounted on the fixed base, and the end of the adjusting bolt is connected to the base body.

[0019] The beneficial effects of this utility model are:

[0020] 1. The design of the insertion-type positioning seat solves the core problem of inaccurate circumferential positioning when chamfering flat wire pins, ensuring high-precision and symmetrical chamfering quality;

[0021] 2. Through the height and radial distance adjustment mechanism, the equipment can quickly adapt to multiple specifications of pins and accurately control the chamfer parameters, which significantly improves production efficiency and equipment flexibility. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the positioning tooling in an embodiment of this utility model;

[0024] In the diagram: 1-Workbench, 2-Motor, 3-Grinding wheel, 4-Positioning fixture, 401-Positioning seat, 402-Lifting seat, 4021-Base body, 4022-Lifting body, 403-Fixed seat, 404-Adjusting component, 4041-Adjusting bolt, 4042-Adjusting nut, 405-Insertion hole, 406-Slot, 407-First long slot, 408-First positioning bolt, 409-Second long slot, 410-Second positioning bolt, 5-Flat thread pin. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present utility model.

[0027] Example:

[0028] like Figure 1 As shown, the flat wire pin chamfering device provided by this utility model is mainly used to solve the problem of efficient and precise chamfering of the ends of flat wire pins with non-circular cross-sections (such as rectangular or near-circular with parallel surfaces) in chains. The device mainly includes a workbench 1, a motor 2, a grinding wheel 3, and a positioning fixture 4. Wherein:

[0029] The worktable 1 serves as the basic platform for the equipment. The motor 2 is fixedly installed in a suitable position on the worktable 1, and its output shaft is used for driving. The grinding wheel 3 is mounted on the output shaft of the motor 2 and is driven by the motor 2 to rotate at high speed, serving as the cutting tool for chamfering. The positioning fixture 4 is located on one side of the grinding wheel 3 in the radial direction and is used to place the flat wire pin 5 to be processed.

[0030] In this embodiment, the motor 2 is a dual-output shaft motor, and two grinding wheels 3 are mounted on two output shafts. Each grinding wheel 3 has a set of positioning fixtures 4 mounted on one side.

[0031] The positioning fixture 4 is composed of the following components: positioning seat 401, lifting seat 402, fixed seat 403, and adjustment component 404.

[0032] The positioning seat 401 is located on the radial side of the grinding wheel 3 and has an insertion hole 405, which is a flat hole that matches the cross-section of the flat wire pin 5. The axis of the insertion hole 405 points towards the working surface of the grinding wheel 3 and is used to insert the flat wire pin to be processed. After the pin is inserted into this hole, the end that needs to be chamfered faces the grinding wheel 3.

[0033] In a preferred embodiment, the insertion hole 405 is designed to be angled, meaning that the end closest to the grinding wheel 3 is tilted downwards relative to the other end, specifically at an angle of 45°. This angled design helps to better allow the end of the pin to be machined to contact the contour of the rotating grinding wheel 3, thus controlling the chamfer angle.

[0034] Furthermore, to improve processing efficiency, the positioning base 401 can be provided with multiple transversely arranged insertion holes 405, allowing multiple pins to be clamped and processed simultaneously. For ease of manufacturing and chip removal, these adjacent insertion holes 405 can be designed to be interconnected.

[0035] The lifting seat 402 is connected directly below the positioning seat 401. Its main function is to adjust the height (Z-axis direction) of the positioning seat 401 and its insertion hole 405. Height adjustment allows the equipment to accommodate pins of different diameters or precisely control the position of the chamfer in the axial (length direction) direction of the pin.

[0036] The lower end of the positioning seat 401 is provided with a slot 406 for connecting with the lower lifting seat 402. The upper end of the lifting seat 402 is designed to mate with the slot 406 at the lower end of the positioning seat 401 and is engaged within the slot 406. To achieve a mating with the inclined insertion hole 405, in the case of the inclined insertion hole 405, the upper surface of the lifting seat 402 is also set as an inclined surface, and the inclination angle of this inclined surface is consistent with the inclination angle of the insertion hole 405, ensuring that the axial direction (inclination angle) of the pin remains unchanged during height adjustment.

[0037] In a more specific structure, the lifting seat 402 can be designed as a split type, including a base body 4021 and a lifting body 4022. The lifting body 4022 is used to support and connect the positioning seat 401. The lifting body 4022 and the base body 4021 are connected by a sliding connection, for example, through a guide rail and a slider. A first positioning bolt 408 is connected between the two to lock the lifting body 4022 after the height is adjusted to the correct position. The lifting body 4022 has a vertical first elongated slot 407, through which the first positioning bolt 408 passes and screws into the base body 4021. Loosening the first positioning bolt 408 allows the lifting body 4022 to slide up and down along the first elongated slot 407 to adjust the height; tightening the first positioning bolt 408 fixes the lifting body 4022 at the desired height. The base body 4021 is responsible for connecting to the worktable 1 and for radial movement.

[0038] The fixed seat 403 is fixedly mounted on the worktable 1, and the lifting seat 402 (specifically, its base body 4021) can move back and forth relative to the fixed seat 403 along the radial direction (X-axis direction) of the grinding wheel 3. This radial movement is used to adjust the distance between the positioning seat 401 and the pin 5 and the working circumferential surface of the grinding wheel 3, thereby precisely controlling the size (depth or width) of the chamfer.

[0039] The base body 4021 is typically mounted on the fixed seat 403 or directly on the worktable 1 via a sliding pair (such as a guide rail and slider or a dovetail groove), and is provided with a second elongated slot 409 for guiding and limiting radial movement.

[0040] The adjusting assembly 404 is connected between the fixed base 403 and the lifting base 402 (specifically, the base body 4021). Its function is to precisely adjust the position of the lifting base 402 and the positioning base 401 relative to the grinding wheel 3 in the radial direction (X-axis direction) by operating the assembly. A common implementation is that the adjusting assembly 404 includes an adjusting bolt 4041, which is movably (e.g., passing through a through hole in the fixed base 403) mounted on the fixed base 403 and axially fixed by two adjusting nuts 4042. The end of the adjusting bolt 4041 is connected to the base body 4021.

[0041] When the adjusting nut 4042 is rotated, the adjusting bolt 4041 pushes or pulls the base body 4021 to move radially, achieving fine adjustment. After adjustment, the position of the lifting seat 402 needs to be locked, which is achieved by the second positioning bolt 410. The second positioning bolt 410 passes through the second elongated slot 409 on the base body 4021 and is screwed into the worktable 1. Loosening the second positioning bolt 410 allows the base body 4021 to slide along the second elongated slot 409 for coarse radial adjustment or to be finely adjusted in conjunction with the adjusting bolt 4041; tightening the second positioning bolt 410 locks the base body 4021 in the desired radial position.

Claims

1. A flat wire pin shaft chamfering device, comprising a workbench (1), a grinding wheel (3) driven to rotate by a motor (2) and a positioning tool (4), characterized in that, The positioning fixture (4) includes: The positioning seat (401) is disposed on the radial side of the grinding wheel (3) and has a socket (405) pointing towards the grinding wheel (3) for inserting a pin. A lifting seat (402) is connected below the positioning seat (401) and is used to adjust the height of the positioning seat (401); A fixed seat (403) is provided on the workbench (1), and the lifting seat (402) can move back and forth relative to the fixed seat (403) along the radial direction of the grinding wheel (3); An adjustment component (404) is connected between the fixed seat (403) and the lifting seat (402). The adjustment component (404) is used to adjust the position of the lifting seat (402) and the positioning seat (401) relative to the grinding wheel (3) in the radial direction.

2. The flat wire pin shaft chamfering apparatus of claim 1, wherein: The insertion hole (405) is inclined, with one end near the grinding wheel (3) tilted downward relative to the other end.

3. The flat wire pin shaft chamfering apparatus of claim 2, wherein: The lower end of the positioning seat (401) is provided with a slot (406), and the upper end of the lifting seat (402) is engaged in the slot (406).

4. The ribbon pinion chamfering apparatus of claim 3, wherein: The upper surface of the lifting seat (402) is an inclined surface, and its inclination angle is consistent with the inclination angle of the socket (405).

5. The ribbon pin shaft chamfering apparatus of claim 4, wherein: The sockets (405) are arranged in multiple horizontal rows, and adjacent sockets (405) are interconnected.

6. The flat wire pin shaft chamfering apparatus of claim 1, wherein: The lifting seat (402) includes a base body (4021) and a lifting body (4022). The base body (4021) and the lifting body (4022) are slidably connected and connected by a first positioning bolt (408). The base body (4021) is slidably mounted on the workbench (1) and connected by a second positioning bolt (410).

7. The tape guide pin chamfering apparatus of claim 6, wherein: The lifting body (4022) is provided with a vertical first long slot (407), and the first positioning bolt (408) passes through the first long slot (407).

8. The tape-silk pin chamfering apparatus of claim 6, wherein: The base body (4021) is provided with a second elongated slot (409), and a second positioning bolt (410) is inserted into the second elongated slot (409).

9. The tape-silk pin chamfering apparatus of claim 8, wherein: The adjustment assembly (404) includes an adjustment bolt (4041), which is movably mounted on the fixed base (403), and the end of the adjustment bolt (4041) is connected to the base body (4021).

Images