Clamping fixture for turning thin-walled pipe

Abstract

The invention provides a clamping fixture for turning a thin-walled pipe, comprising a four-jaw chuck, a fixing block arranged in the four-jaw chuck, a fixing shaft arranged on the fixing block and distributed along the axial direction of the fixing block, and a jacking device arranged in the radial direction of the fixing shaft, wherein the jacking device comprises a jacking barrel coaxial with the fixing shaft, and compression springs connecting the inner wall of the jacking barrel with the outer wall of the fixing shaft, the diameter of the jacking barrel is greater than the diameter of thefixing shaft, the fixing block is a cube, and the axial center line of the fixing block coincides with the axial center line of the fixing shaft and the axial center line of the four-jaw chuck. Through arranging the jacking device, the thin-walled part can be more conveniently jacked better. At the same time, the fixing shaft for being connected with the jacking device is connected with the cubicfixing block, and the four-jaw chuck is used for fixing the fixing block, so that it is ensured that jacking acting force can be applied to the axial direction and the radial direction of the thin-walled part, and the machining precision is improved.

Description

technical field [0001] The invention relates to the technical field of fixtures for mechanical processing, in particular to a clamping fixture for machining thin-walled pipes. Background technique [0002] At present, in the production process of automation equipment, thin-walled pipe fittings are usually used, and in order to make the thin-walled pipe fittings better cooperate with other parts in the equipment, it is usually necessary to process the outer circle of the thin-walled pipe fittings. When the lathe is processing thin-walled pipe parts, referred to as thin-walled pipes, limited by the size of the jaws, sometimes it cannot be clamped firmly. At the same time, for thin-walled pipe parts, it is easy to cause deformation of the parts during clamping. During the high-speed rotating cutting process, the parts are prone to bending deformation and shaking, which is not conducive to ensuring the machining accuracy. Even for long thin-walled pipe parts, they cannot be proc...

AI Technical Summary

Problems solved by technology

The utility model overcomes the technical defect that the existing thin-walled pipe fitting clamping device is easy to damage the outer wall of the thin-walled pipe fitting and cannot complete the processing of the thin-walled pipe fitting at one time, and provides a kind of thin-walled pipe fitting that is not easy to damage the outer wall and can make the thin-walled pipe fitting Thin-walled pipe fittings cylindrical processing fixture for one-time processing of pipe fittings

However, this fixture needs to be expanded and tightened by gas pressure, which requires an additional gas source, which increases the cost of use and is not easy to operate. At the same time, the mandrel of the fixture is clamped by a three-jaw chuck, which makes it easy to rotate the mandrel. The processing of the outer wall of the pipe will affect the processing accuracy

Images