Parallel translation type connecting rod lever type clamping device

Abstract

The invention provides a parallel translation type connecting rod lever type clamping device, and belongs to the technical field of machining. The parallel translation type connecting rod lever type clamping device comprises a swing rod, a first connecting rod, a second connecting rod and a lever, a left sliding block and a right sliding block are arranged on a guide rod in a sliding manner, a left V-shaped clamping claw is installed on the right side of a left finger through two fastening screws, a right V-shaped clamping claw is installed on the left side of a right finger through a fastening pin shaft, the lower end of the swing rod is fixedly connected with the upper end of the lever, the left end of the first connecting rod is hinged to the upper end of the lever, the right end of thefirst connecting rod is hinged to the middle end of the right sliding block, the left end of the second connecting rod is hinged to the middle end of the left sliding block, the right end of the second connecting rod is hinged to the lower end of the lever, the middle end of the locking lever is hinged to an L-shaped support through a locking lever pin shaft, and a hemispheric pressure pad is installed at the left end of the locking lever. According to the parallel translation type connecting rod lever type clamping device, it is guaranteed that the left V-shaped clamping claw and the right V-shaped clamping claw achieve four-point contact of disc type workpieces, and the disc type workpieces are prevented from falling when a pneumatic circuit breaks down.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a parallel-moving connecting rod and lever type clamping device. Background technique [0002] Machining refers to the process of changing the shape or performance of a workpiece through a mechanical device. According to the difference in processing method, it can be divided into cutting processing and pressure processing. Fixtures are generally practical in mechanical processing. Fixtures refer to devices used to fix processing objects in the process of mechanical manufacturing so that they can occupy the correct position for construction or testing. They are also called fixtures. In a broad sense, any process in the process, the device used to install the workpiece quickly, conveniently and safely, can be called a fixture. Fixtures are usually composed of positioning elements, clamping devices, tool setting guide elements, indexing devices, connecting elements, ...

AI Technical Summary

Problems solved by technology

In the common clamping device for clamping disc workpieces, due to the existence of assembly errors, the four-point contact between the two jaws and the disc workpiece cannot be guaranteed, and the clamping reliability is not ideal.

Moreover, when the disc-like workpiece is in the clamping state, the pneumatic circuit occasionally fails and causes the disc-like workpiece to fall off

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