Clamping device for eccentric clamping jaws

Abstract

The invention provides a clamping device for eccentric clamping jaws and belongs to the technical field of machining. The clamping device comprises a driving lever, a lever, a level pin shaft, a limiting plate, a connecting rod, a compression spring, the eccentric clamping jaws and an extension spring. The driving lever is arranged on a driving lever support, the right end of a piston rod is connected with the driving lever support, and the middle end of the lever is hinged to a rack through the lever pin shaft; the two clamping jaws are arranged at the lower end of the lever, the upper end of the lever is in an arc shape, and the limiting plate is arranged on one side of the lever; the connecting rod can be arranged on a fixed guide base in a vertically sliding manner, and a lower bracket is attached to the upper end of the lever; the upper end of the compression spring is attached to the fixed guide base, the lower end of the compression spring is attached to the lower bracket, and the middle ends of the eccentric clamping jaws are hinged to the rack through clamping jaw supporting pins; and one end of each eccentric clamping jaw is hinged to an upper bracket, one end of the extension spring is connected with an upper spring base, and the other end of the extension spring is connected with a lower spring base. The clamping state of a workpiece can still continue to be kept when an air cylinder breaks down, the structure is reasonable, and good reliability is achieved.

Description

technical field [0001] The invention relates to the technical field of machining, in particular to an eccentric claw 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. In the production process, the process of changing the shape, size, position and nature of the production object to make it a finished or semi-finished product is called a process. It is an essential part of the production process. The process can be divided into casting, forging, stamping, welding, machining, assembly and other processes. The mechanical manufacturing process generally refers to the sum of the machining process of parts and the assembly process of machines. Other processes are called auxiliary processes. Processes, such as transportation, storage, power supply, equipme...

AI Technical Summary

Problems solved by technology

Common clamping devices rely on the cylinder to directly drive the clamp block to clamp the workpiece. Once the cylinder fails, the workpiece cannot continue to be clamped, and the reliability is poor.

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