A shaft-torsional compound excitation test method for deep hole machine tools

Abstract

The invention discloses a deep hole machine tool spindle-torsion compound excitation experimental method. By adjusting module components of a deep hole machine tool spindle-torsion compound excitationexperimental device, three vibration modes of axial excitation, one-way shaft torsion compound excitation and reciprocating shaft torsion compound excitation are realized. According to the differentrequirements of drilling quality for deep hole straightness or axis deflection in deep hole machining, switching between the four drilling motion modes is realized. The four drilling motion modes include: motion mode 1 a workpiece rotates and a cutter performs feed motion; motion mode 2, the workpiece does not move, and the cutter rotates and performs the feed motion; motion mode 3, the workpiecerotates, the cutter rotates in the opposite direction and performs the feed motion; ad motion mode 4, the workpiece rotates and performs the feed motion. The three vibration modes of vibration drilling and the four drilling motion modes can be combined with each other, so as to expand the application scope of a machine tool.

Description

technical field [0001] The invention relates to the field of deep hole processing, in particular to a shaft-torsion compound excitation test method for deep hole machine tools. Background technique [0002] With the development of industrial technology, deep hole processing has been widely used in energy (petroleum mining, coal, electric power), aerospace, metallurgy, automobile, chemical and other fields, and its proportion is becoming more and more prominent. At present, hole processing accounts for about 30% of the entire mechanical processing system, of which more than 40% of hole processing belongs to the category of deep hole processing, and 22% is for the processing of solid materials, and relevant data show that the output of drills accounts for about 60% of the total output of cutting tools. [0003] In the 1950s, the concept of vibration drilling was first proposed by Professor Junichiro Kumabe. Compared with ordinary drilling, vibration drilling has full advanta...

AI Technical Summary

Problems solved by technology

[0005] 1. Most of them are ultrasonic excitation instruments. This type of exciter is bulky, expensive, and the experimental form is single, which is not suitable for experimental research.

[0006] 2. Most of them are low-frequency exciters, the precision is not enough, it is difficult to maintain a stable amplitude, and the quality of deep hole processing is greatly reduced

[0007] 3. Most of the existing vibration excitation devices are mainly axial vibration, and the excitation form is single

However, when processing materials such as titanium alloys, the quality and efficiency of deep hole processing are inevitably affected

It is difficult to improve the quality of deep hole processing by traditional cutting methods. At the same time, the continuous development of my country's machinery manufacturing industry has also put forward more stringent requirements for deep hole processing accuracy and surface quality.

Images