Analysis of the Stagnant Characteristics of the Material in the Mechanical Ruling Process

doi:10.3901/JME.2018.19.182

Abstract

Abstract: In order to study the generation and distribution characteristics of the stagnation zone of the grating material in the mechanical ruling process. Firstly, Building the slip-line field model with stagnation zone in the plastic flow plane and putting forward the calculation method about calculating the dimensionless height and length of the stagnation zone based on the theoretical model of orthogonal cutting slip line proposed by LEE and SHAFFER. Then calculate the dimensionless height and length of the stagnation zone by using the three-way force from finite element analysis. The evolution curve of the stagnation zone is obtained by theoretical analysis and simulation which revealed the mechanism and distribution of the stagnation zone. Finally, the distribution characteristics of the groove surface retention area and its effect on the quality of the grating grooves are verified by the mechanical characterization test. Grating groove surface formed a clear line of demarcation which could separate the grating surface into plastic deformation area and stagnant area in a specific mechanical ruling process conditions. Due to the difference of forming mechanism and groove quality, the groove surface will be deformed nonlinearly in the second mechanical ruling which will affect the groove shape, and will ultimately affect the diffraction effect of the diffraction grating. The results of this study provide theoretical and experimental basis for controlling and optimization issues regarding of the groove shape and the groove surface quality from the perspective of stagnation zone.

Key words: groove surface quality, mechanical ruling, nonlinear groove shape, slip-line field, stagnation zone

CLC Number:

TH142

DING Yanchun, SHI Guangfeng, SHI Guoquan. Analysis of the Stagnant Characteristics of the Material in the Mechanical Ruling Process[J]. Journal of Mechanical Engineering, 2018, 54(19): 182-189.

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