Thin-wall round pipe turning fixture

Abstract

The invention discloses a thin-wall round pipe turning fixture. The thin-wall round pipe turning fixture comprises a step mandrel, and further comprises multiple disc springs and a pressing plate for pressing the disc springs, wherein a workpiece positioning table and a disc spring cushion table are arranged at one end of the step mandrel in sequence; an external thread is arranged at the other end of the step mandrel; the step mandrel is coated by multiple disc springs for outwards ejecting and supporting thin-wall round pipes to be machined; elastic rubber sleeves for increasing the frictional force between the disc springs and the thin-wall round pipes to be machined are arranged at the outer sides of the disc springs; the pressing plate for applying the axial pretightening force to the disc springs is arranged on the step mandrel at one sides of the disc springs; and a pressing nut fitting the external thread for use is arranged on the step mandrel at one side of the pressing plate. The thin-wall round pipe turning fixture has the characteristics of reasonable design, simple structure, high machining precision, convenience for workpiece disassembly, low labor intensity, high production efficiency, long service life, low production cost and convenience for promotion and application.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and relates to a clamp, in particular to a compression clamp for cutting thin-walled round pipes. Background technique [0002] Due to the characteristics of thin wall, poor rigidity and weak strength, thin-walled circular tubes are prone to stress deformation, thermal deformation and vibration deformation during processing. When the thin-walled round tube is turned, it needs to be clamped by the three-jaw chuck on the lathe spindle. However, due to the thin wall, poor rigidity and weak strength of the thin-walled round tube, it is easy to deform under the clamping force of the three-jaw chuck. , which affects the accuracy requirements of its dimensional accuracy and shape tolerance. At the same time, because the thin-walled round tube is thin, the cutting heat generated during the turning process will cause thermal deformation of the thin-walled round tube, making it more difficult...

AI Technical Summary

Problems solved by technology

[0002] Due to the characteristics of thin wall, poor rigidity and weak strength, thin-walled circular tubes are prone to stress deformation, thermal deformation and vibration deformation during processing.

When the thin-walled round tube is turned, it needs to be clamped by the three-jaw chuck on the lathe spindle. However, due to the thin wall, poor rigidity and weak strength of the thin-walled round tube, it is easy to deform under the clamping force of the three-jaw chuck. , which affects the accuracy requirements of its dimensional accuracy and shape tolerance. At the same time, because the thin-walled round tube is thin, the cutting heat generated during the turning process will cause thermal deformation of the thin-walled round tube, making it more difficult to guarantee and control the size of the thin-walled round tube.

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