A fixture quick switching tool

Abstract

A kind of fixture quick switching tool, including base support, the space between both sides of base support is installed clamp, the right side upper end of base support is provided with positioner, positioner is fixedly connected with driving shaft, the left side upper end of base support is fixedly connected with driven shaft, the left side of positioner and the right side of driven shaft are provided with zero point positioning mechanism respectively, two zero point positioning mechanisms are oppositely arranged and mutually flush, the both sides of zero point positioning mechanism are provided with locking screw, the lower end of locking screw is rotatably connected with the both ends of zero point positioning mechanism.This tool has high switching efficiency, stable positioning accuracy and repeat accuracy.

Description

Technical Field

[0001] This utility model relates to the field of fixture and tooling technology, specifically to a fixture quick-change tooling. Background Technology

[0002] As the variety of products a single machine needs to produce increases, frequent changes to fixtures and tooling are required. Traditional fixture installation methods typically involve direct bolt clamping or connection via locating pins or transition plates. The closest existing technology is a standardized fixture base system based on hydraulic or manual clamping. This system usually includes a base plate (or base) permanently fixed to the machine tool table and multiple interchangeable fixture modules (or tooling plates). Precision locating holes and threaded holes are machined into both the base plate and the fixture modules. During replacement, the operator initially aligns the fixture module with the locating holes on the base plate using locating pins, and then manually tightens it using multiple bolts or a dedicated clamping mechanism to secure the fixture module to the base plate. Such systems have been disclosed in published patent documents (e.g., DE102006061374A1) and commercial products (e.g., the quick clamping system from AMF in Germany). While this switching method can accommodate the switching of fixtures and tooling for various products, it still suffers from low switching efficiency and unstable positioning accuracy and repeatability. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a quick-change fixture. This fixture offers high switching efficiency and stable positioning and repeatability.

[0004] The purpose of this utility model is achieved by the following solution: a quick-change fixture, including a base bracket, with a space for installing the fixture between the two sides of the base bracket, a positioner is set at the upper right end of the base bracket, the positioner is connected and fixed to the drive shaft, the upper left end of the base bracket is connected and fixed to the driven shaft, a zero-point positioning mechanism is set on the left side of the positioner and the right side of the driven shaft respectively, the two zero-point positioning mechanisms are arranged opposite each other and flush with each other, locking screws are connected to both sides of the zero-point positioning mechanism, and the lower end of the locking screw is rotatably connected to the two ends of the positioning male head of the zero-point positioning mechanism.

[0005] The upper end of the zero-point positioning mechanism is a female positioning head, and the lower end of the zero-point positioning mechanism is a male positioning head.

[0006] The positioning male and female heads of the zero-point positioning mechanism are respectively connected and fixed to the base bracket and the clamp.

[0007] The zero-point positioning mechanism is locked via an electrical / pneumatic control line.

[0008] Limiting blocks are provided on both sides of the upper surface of the positioning male head of the zero-point positioning mechanism.

[0009] The positioner is provided with a horizontal limiting pin at its upper end, and the front end of the horizontal limiting pin passes through the upper end of the drive shaft.

[0010] The advantages of this utility model are: 1. It can significantly shorten tooling changeover time, reduce machine tool standby time, and improve production efficiency; 2. It can adapt to various product fixtures, enabling flexible production; 3. High repeatability; 4. Simple to operate, safe and reliable. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the present invention and the fixture assembly; Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 1 ; Figure 3 This is a schematic diagram of the structure of the present utility model. Figure 2 ; Figure 4 This is a front view of the structure of this utility model. Detailed Implementation

[0012] like Figures 1 to 4 As shown, a quick-change fixture includes a base support 1. The space between the two sides of the base support 1 is for mounting a fixture 7. A positioner 2 is mounted on the upper right side of the base support 1 and is connected and fixed to a drive shaft 3. The upper left side of the base support 1 is connected and fixed to a driven shaft 9. Zero-point positioning mechanisms 6 are respectively mounted on the left side of the positioner 2 and the right side of the driven shaft 9. The two zero-point positioning mechanisms 6 are arranged opposite each other and flush. Locking screws 5 are connected to both sides of the zero-point positioning mechanism 6. The upper end of the zero-point positioning mechanism 6 is a positioning female head, and the lower end is a positioning male head. The positioning female head and the positioning male head provide positioning, fixing, and support for the fixture. The lower end of the locking screw 5 is rotatably connected to both ends of the positioning male head of the zero-point positioning mechanism 6. The positioning male head and positioning female head of the zero-point positioning mechanism are respectively connected and fixed to the base support 1 and the fixture 7. The zero-point positioning mechanism 6 is locked via a zero-point positioning mechanism electrical / pneumatic cable 10. The zero-point positioning mechanism 6 has limiting blocks 8 on both sides of the upper surface of the positioning male head. The limiting blocks 8 provide guidance and limitation when the fixture rises / falls. The positioner 2 has a horizontal limiting pin 4 at its upper end. The front end of the horizontal limiting pin 4 passes through the upper end of the drive shaft 3. The horizontal limiting pin 4 prevents the drive shaft 3 and the driven shaft 9 from rotating when the fixture is installed.

[0013] Quick-change fixture process: The zero-point positioning mechanism 6 is depressurized, releasing the locking screw 5; Quickly switch to the trolley, lift the clamp vertically and move it away; When installing clamp 7: first install the horizontal limit pin 4 to prevent rotation; After using the quick-change trolley to lift the fixture directly above the zero-point positioning mechanism 6, it is lowered vertically. Once the fixture has descended into position, the male and female heads of the zero-point positioning mechanism 6 engage, and the bottom cylinder supplies air to the male head until the zero-point mechanism 6 locks. Fixed locking screw 5; The quick-change trolley descends and exits, the horizontal limit pin 4 retracts, and the fixture installation is completed.

[0014] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications made to the present utility model by those skilled in the art without departing from the spirit of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A quick-change fixture, comprising a base support (1), characterized in that: The space between the two sides of the base bracket (1) is for installing the clamp (7). A positioner (2) is set on the upper right side of the base bracket (1). The positioner (2) is connected and fixed to the drive shaft (3). The upper left side of the base bracket (1) is connected and fixed to the driven shaft (9). Zero-point positioning mechanisms (6) are set on the left side of the positioner (2) and the right side of the driven shaft (9). The two zero-point positioning mechanisms (6) are set opposite to each other and are flush with each other. Locking screws (5) are connected on both sides of the zero-point positioning mechanism (6). The lower end of the locking screw (5) is rotatably connected to the two ends of the positioning male head of the zero-point positioning mechanism (6).

2. The quick-change fixture according to claim 1, characterized in that: The upper end of the zero-point positioning mechanism (6) is a female positioning head, and the lower end of the zero-point positioning mechanism (6) is a male positioning head.

3. The quick-change fixture according to claim 1, characterized in that: The positioning male and female heads of the zero-point positioning mechanism are respectively connected and fixed to the base bracket (1) and the clamp (7).

4. The quick-change fixture according to claim 1, characterized in that: The zero-point positioning mechanism (6) is locked by the zero-point positioning mechanism electrical / pneumatic line (10).

5. The quick-change fixture according to claim 1, characterized in that: Limiting blocks (8) are provided on both sides of the upper surface of the positioning male head of the zero-point positioning mechanism (6).

6. The quick-change fixture according to claim 1, characterized in that: The upper end of the positioner (2) is provided with a horizontal limiting pin (4), and the front end of the horizontal limiting pin (4) passes through the upper end of the drive shaft (3).

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