Original scientific paper

https://doi.org/10.21278/TOF.444009419

Milling Machine Error Modelling and Analysis in the Machining of Circular-Arc-Tooth-Trace Cylindrical Gears

Yang Wu ; Sichuan University, Chengdu, China
Li Hou ; Sichuan University, Chengdu, China
Dengqiu Ma ; College of Eng. and Technol.,Zunyi Normal College, Zunyi, China
Yongqiao Wei ; School of Mechatronics Eng., Lanzhou Univ. of Technol., Lanzhou, China
Lan Luo ; Sichuan University, Chengdu, China

Abstract

This paper is to study errors of a milling machine used for the machining of Circular-Arc-Tooth-Trace (CATT) cylindrical gears. A topological structure model of the milling machine is established using the lower numbered body array approach. Coordinate transformation matrices between adjacent parts of the milling machine are set up by the D-H homogeneous transformation matrix. Based on the topological structure model and transformation matrices, a comprehensive error model of a milling machine used for the machining of CATT gears is established. According to the error model, the angle errors of the milling point are linear combinations of the angle errors of moving parts, while the displacement errors of the milling point are related to displacement errors, the angle errors of moving parts, the adjustment parameters of machine tools, and the geometric parameters of the gear. Finally, the influence of the errors of the cutter head on the milling point errors in the machining of CATT gears are discussed. The research can provide a theoretical basis for the error analysis, precision design, and the geometric error compensation of a milling machine used for CATT gear machining.

Keywords

Circular-Arc-Tooth-Trace (CATT) cylindrical gear; milling machine; topological structure model; coordinate transmission matrix; comprehensive error model

Hrčak ID:

247573

URI

https://hrcak.srce.hr/247573

Publication date:

22.1.2021.

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