Clamping tool provided with air cylinder and restoring torsion springs

Abstract

The invention discloses a clamping tool provided with an air cylinder and restoring torsion springs. The clamping tool comprises an installation base. An installation cavity is formed in the installation base. At least three clamping arms are arranged in the installation cavity. The clamping arms are evenly distributed in the circumferential direction. The heads of the clamping arms stretch forwards out of the installation cavity. The middle of each clamping arm is hinged to the installation base. One clamping arm ejector rod is arranged in the portion, behind the clamping arms, of the installation base in a penetrating mode. The front end of the clamping arm ejector rod aligns to the tails of the clamping arms. When the clamping arm ejector rod moves forwards, the tails of the clamping arms are pushed to be separated from one another, and the heads of the clamping arms are pushed to be close to one another. The clamping arm ejector rod is driven by the air cylinder. The clamping arm restoring torsion springs are arranged between the clamping arms and the installation base. The two ends of each clamping arm restoring torsion spring abut against the corresponding clamping arm and the installation base respectively. The clamping arm restoring torsion springs push the tails of the clamping arms to be close to one another, so that the clamping arms are restored. By the adoption of the structure, clamping of bevel gear shafts with different diameters is achieved, operation is easy, and the application range is wide.

Description

technical field [0001] The invention belongs to the field of machining fixtures, in particular to a clamping fixture with a cylinder and a return torsion spring. Background technique [0002] Bevel gears, also called bevel gears, are widely used in industrial transmission equipment, vehicle differentials, locomotives, ships, power plants, steel mills, railway track inspections, etc. During the bevel gear machining process, it is necessary to use a fixture to fix the bevel gear shaft, and then shape the bevel gear. The bevel gear shaft clamp usually used is only a cylindrical clamping device, so for bevel gear shafts with different diameters, workers are required Replacing cylinder fixtures with matching inner diameters not only wastes resources, but also requires the preparation of various types of cylinder fixtures, which also takes time and effort and reduces production efficiency. Solving the above problems has become a top priority. Contents of the invention [0003] ...

AI Technical Summary

Problems solved by technology

During the bevel gear machining process, it is necessary to use a fixture to fix the bevel gear shaft, and then shape the bevel gear. The bevel gear shaft fixture usually used is only a cylindrical clamping device, so for bevel gear shafts with different diameters, workers are required Replacing cylinder fixtures with matching inner diameters not only wastes resources, but also requires the preparation of various types of cylinder fixtures, which also takes time and effort and reduces production efficiency. Solving the above problems has become a top priority

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