Milling cutter capable of improving spiral milling machining precision, and design method

Abstract

The invention provides a milling cutter capable of improving spiral milling machining precision, and a design method, and belongs to the field of machining. The milling cutter comprises a cutter handle and a machining part, wherein the machining part comprises a finish machining section, a chambering machining section and a rough machining section; a preliminary selection machining milling cutteris used for carrying out a spiral milling experiment, tested radial force is recorded and the average value of radial force is calculated; through finite element simulation software, a cutter deformation amount is obtained; according to the cutter deformation amount, a new milling cutter is designed; a newly designed milling cutter is used for carrying out the spiral milling experiment, whether anaperture obtained by the experiment meets an accuracy requirement or not is checked; if the requirement is not met, the milling cutter is designed again. According to the milling cutter and the design method, an aperture error caused by deformation since the cutter is affected by radial force in the spiral milling process is eliminated, finally, the measured aperture meets the accuracy requirement, the milling cutter can finish two-time milling of rough machining and finish the finish machining through one-time milling, and milling accuracy and machining efficiency are improved.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and in particular relates to a milling cutter and a design method for improving the precision of spiral milling. Background technique [0002] With the rapid development of aerospace technology, new materials with good performance are widely used in aircraft parts. These new materials meet the performance requirements of high precision, high reliability, and light weight required by aircraft. For example, titanium alloy, which is widely used in the aviation industry, has a density of about 4500kg / m, which is low in density but high in strength, and is resistant to high temperature and corrosion. However, titanium alloy is a typical difficult-to-machine material due to its high hardness, which causes the tool to be deformed by a large cutting force during the machining process, which affects the machining accuracy. [0003] The traditional processing method for processing titanium alloys is d...

AI Technical Summary

Problems solved by technology

[0005] Therefore, in-depth research on helical milling is very necessary. The current problem is: when helical milling has a small aperture, the diameter of the milling cutter used is also small, and it will be subjected to a large radial force during the milling process, causing the tool to generate The deformation biased towards the center of the aperture makes the processed aperture smaller and the machining accuracy cannot meet the requirements

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