Machining process for slender shaft type part of unmachined outer circle

Abstract

The invention relates to a machining process for a slender shaft type part of an unmachined outer circle. The machining process comprises the following steps of: (1) machining an adjustable hoop; (2) arranging the adjustable hoop on the outer circle of the shaft type part to be machined and then erecting on a central frame; (3) tightly pressing the shaft type part to be machined by using a pressing tip, adjusting a supporting bearing of the central frame to be in contact with the outer circle of the hoop, and aligning the surface of the outer circle of the hoop by using a dial gauge to overlap the surface with the center of rotation of a main shaft of a turning machine; and (4) adjusting bolts around the adjustable hoop, aligning the outer circle of the shaft type part to be machined by using the dial gauge, guaranteeing the coaxiality and then screwing up the bolts; and the pressing tip to perform turning. The process realizes that the part can be machined on the turning machine without alignment; each dimension of the machined part meets the requirements of a drawing; and the production efficiency is increased.

Description

technical field [0001] The invention relates to a processing technology of a slender shaft part without processing the outer circle, which is used for processing other end faces or inner holes of the slender shaft part without processing the outer circle. Background technique [0002] When processing slender shaft parts, because the workpiece is long, poor in rigidity, and easy to vibrate, when it is subjected to cutting force, it will cause bending and vibration, and processing is very difficult. Therefore, a steady rest is usually used to increase the rigidity of the workpiece during turning. However, the use of the center frame will be affected by the accuracy of the outer circle. When the outer circle of the part is not machined or the shape and position tolerance requirements such as the roundness and coaxiality of the outer circle cannot meet the machining requirements, only the center frame clamping cannot process a qualified product. Products, in this case, the exist...

AI Technical Summary

Problems solved by technology

[0003] 1) Part calibration and processing of the outer circle require a lot of man-hours, wasting manpower and material resources;

[0004] 2) Such parts are generally long, and the outer circle is processed after correction, which cannot guarantee uniform wall thickness, and is prone to the problem of out-of-tolerance after machining;

[0005] 3) Parts calibration requires large-scale pressure equipment, and units that do not have the conditions make calibration very difficult

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