Digitalized thinning machining method for large thin-walled cylinder part

Abstract

The invention discloses a digitalized thinning machining method for a large thin-walled cylinder part, and belongs to the technical field of machining. The method comprises the following steps that firstly, a vertical inner support of the large thin-walled cylinder part is clamped, and the external contour and the wall thickness of a thinning section of the cylinder part are scanned and measured on a machine tool by using a line laser measurement device and an ultrasonic measurement device; then by utilizing the actual measurement data of the external contour and the wall thickness of the thin-walled cylinder part and considering the requirement for machining the residual wall thickness, a machining target curved surface of the thinning section is re-established, and a thinning machining code is automatically generated; and finally, the numerical control machine tool finishes thinning machining of the large thin-walled cylinder part through inspection. According to the method, the thinning machining target curved surface associated with the residual wall thickness is re-established by using the part external contour and wall thickness data measured on the machine tool, and the thinning machining code is generated, so that the function integration of CAD, CAM and CNC in the thinning machining of the large thin-walled cylinder part is effectively realized, the manual interventionis reduced, and partitioned thinning machining and equal-wall-thickness or variable-wall-thickness controllable machining of the large thin-wall cylinder part are achieved.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing and relates to a digital thinning processing method for a large thin-walled tube. Background technique [0002] Large thin-walled cylinders are widely used in aerospace equipment as the main components of fuel storage and structural bearing. In order to ensure light weight and structural strength, the controllable thinning process of the remaining wall thickness of thin-walled cylindrical parts is the core problem. However, thin-walled cylindrical parts are often spin-formed, and at the same time, considering the clamping deformation, the structure has a large deformation, and it is difficult to ensure the consistency of the wall thickness if it is processed according to the original design size. [0003] At present, most of the barrel section thinning processing relies on the experience of workers, and performs tool setting, rough machining, semi-finishing machining and finishing m...

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Problems solved by technology

[0006] The above research has not mentioned the digital thinning processing method for large thin-walled tubes

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