Rapidly-clamping clamp

Abstract

The invention discloses a rapidly-clamping clamp. A central shaft is of a five-section type step shaft structure, a first shaft section, a second shaft section, a third shaft section, a fourth shaft section and a fifth shaft section are sequentially arranged from left to right, a copper-base steel ball holder is arranged on the third shaft section in a sleeved mode, a pressing plate and a cover plate are both arranged on the fourth shaft section of the central shaft in a sleeved mode, protrusions are arranged on the right portion of the outer circle face of the pressing plate, the cover plate is located on the left side of the pressing plate, grooves are formed in the hole wall of a center hole of the cover plate, a compressed spring is installed inside the center hole of the cover plate and arranged on the fourth shaft section of the central shaft at the same time, the left end of the compression spring abuts against the step face of the central shaft, the right end of the compression spring is attached to the left plate face of the pressing plate, and a nut is installed on the fifth shaft section of the central shaft in a sleeved mode. According to the rapidly-clamping clamp, a gap between the hole wall of the center hole of a workpiece and the central shaft can be effectively achieved through the copper-base steel ball holder, the coaxiality requirement of the workpiece can be well met accordingly, then the machining accuracy and the machining quality of the workpiece can be guaranteed, and the rapid replacement can be achieved by loosening and fastening the nut and disassembling and assembling the cover plate.

Description

technical field [0001] The invention belongs to the field of tooling fixtures, and in particular relates to a quick clamping fixture for clamping gears, sets of workpieces and the like. Background technique [0002] At present, for the clamping of workpieces such as gears and sleeves, the positioning of the mandrel and the inner hole is generally adopted, and then the pressure plate and the nut are compressed, and there is a gap between the mandrel and the inner hole. [0003] The defects of existing fixtures for clamping gears, sleeves and other workpieces are as follows: [0004] 1. Since there is a gap between the inner hole of the workpiece and the mandrel, it will inevitably lead to difficulty in ensuring the coaxiality of the workpiece, which will affect the processing accuracy and quality of the product; [0005] 2. Due to the use of pressure plates and nuts for compression, the quick clamping performance of the fixture is poor, so it is urgent to solve the above tec...

AI Technical Summary

Problems solved by technology

[0004] 1. Since there is a gap between the inner hole of the workpiece and the mandrel, it will inevitably lead to difficulty in guaranteeing the coaxiality of the workpiece, which will affect the processing accuracy and quality of the product;

[0005] 2. Due to the use of pressure plates and nuts for compression, the quick clamping performance of the fixture is poor, so it is urgent to solve the above technical problems

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