Lathing method for Semi-circle bush

Abstract

The invention discloses a turning processing method of thin-walled parts with small and medium diameters. In the method, an auxiliary fixture is used for processing on an ordinary lathe. First, according to the outer diameter of the processed part, a piece with the same diameter as the part and a slit in the middle is made. The slotted sleeve is used as an auxiliary fixture to chuck the blank of the part to be processed; then put the chuck in the part into the inner hole of the slotted sleeve, and clamp it together with the slotted sleeve to the three-jaw automatic centering chuck of the lathe On the disk, after clamping, rough turning and finishing turning are performed; since the slotted sleeve is used as an auxiliary fixture to clamp thin-walled parts, the clamping force of the long disk jaws acting on the parts is more evenly distributed to the processed parts. On the surface of the part, the clamping force per unit area is reduced, the stability of the part clamping is increased, and the deformation and vibration of the part are reduced. The wall parts are transferred to the three-jaw self-centering chuck for processing, which improves the processing efficiency.

Description

technical field

[0001] The invention relates to the field of mechanical processing, and relates to a turning method, in particular to a turning method of a semicircular bearing bush. Background technique

[0002] There are many parts on the fan, especially most of the parts on the fan rotor are thin-walled parts with relatively thin wall thickness, such as various bearing bushes, bushings, etc. Due to the relatively thin wall thickness of these parts, the cutting heat generated during the turning process is relatively concentrated and difficult to dissipate, and the parts are easily deformed and vibrated under the action of clamping force, which directly affects the processed parts. The dimensional accuracy and surface roughness of the machined parts are mainly reflected in the fact that the dimensional accuracy and shape and size accuracy of the processed parts are difficult to guarantee, and the surface roughness of the parts is also difficult to meet the design requiremen...

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