Precision numerical control milling method for thin-wall parts

Abstract

The invention discloses a precision numerical control milling method for thin-wall parts, and provides a processing method for reducing the milling deformation of the thin-wall parts and improving processing precision and surface quality. When a thin-wall part is finished by fine processing through end milling, the machining allowances of the side wall and a web plate are larger than those of theprior process, and are between 2 and 5mm respectively; when the side wall is processed, the axial depth ap is between 0.2 and 0.8mm, and the radial cutting width is 60 to 80 percent of the diameter of a cutting tool; and when the web plate is processed, the axial depth ap is between 2 and 5mm, and the radial cutting width ae is 10 to 20 percent of the diameter of the cutting tool. The processing method effectively slows down the reduction of the self-rigidity of workpieces and control the cutting force in the thin-wall direction when the processing efficiency is ensured, thereby effectively reducing and controlling the processing deformation of the thin-wall parts, and ensuring the processing precision and surface quality of the parts.

Description

technical field [0001] The invention relates to a part processing method, more specifically, relates to a thin-walled part precision numerical control milling processing method. Background technique [0002] Many important parts in the fields of modern aviation, aerospace, weapons and other defense industries are thin-walled structures, and have the characteristics of high precision requirements for complex structural parts. Although the current advanced CNC machining equipment can achieve high rigidity and precise motion control, due to the poor rigidity of thin-walled structural parts, machining deformation and cutting vibration are prone to occur during the machining process, resulting in machining errors, so it is difficult to guarantee The processing accuracy and surface quality of the parts will cause the parts to be scrapped in severe cases. Therefore, while ensuring the processing efficiency, how to take effective measures to control or reduce the processing deforma...

AI Technical Summary

Problems solved by technology

Although the current advanced CNC machining equipment can achieve high rigidity and precise motion control, due to the poor rigidity of thin-walled structural parts, machining deformation and cutting vibration are prone to occur during the machining process, resulting in machining errors, so it is difficult to guarantee The processing accuracy and surface quality of the parts, in severe cases, the parts will be scrapped