Analysis of tooth profile and accumulative pitch errors of end-toothed disc and its tolerance development

作者：Zhang, Cheng; Zhang, Jian-run^*; Tang, Pan

来源：Mechanism and Machine Theory, 2018, 122: 86-96.

DOI：10.1016/j.mechmachtheory.2017.12.015

• End-toothed disc
• Indexing accuracy
• Processing error
• Tolerance development

Tooth profile errors of the end-toothed disc describe the tooth profile deviations which mainly contain tooth trace error and tooth profile half-angle error while accumulative pitch error describes the tooth position deviation of the end-toothed disc. In traditional analysis, neither the deviation of the benchmark of tooth trace error nor that of tooth profile half-angle error is considered, while the deviations exist in engineering. Hence, tooth width error is proposed in order to describe the deviations of the benchmarks and the indexing accuracy error model is also established according to these four errors in this paper. Meanwhile, Tolerance Proportional Distribution Method is presented to establish the tolerance proportional model of end-toothed disc. Therefore, according to the indexing accuracy error model and tolerance proportional model, the pass rate model of end-toothed disc is established and a new approach for tolerance development is put forward based on this pass rate model. Finally, a simulation program is developed for random sequence generation, which replaces the processing errors measurement, and meshing process simulation, and verifies the correctness of the approach for tolerance development.

• 出版日期2018-4
• 单位东南大学