• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2018, Vol. 54 ›› Issue (19): 182-189.doi: 10.3901/JME.2018.19.182

• 数字化设计与制造 • 上一篇    下一篇

机械刻划过程中的材料滞留特征分析

丁艳春1, 石广丰1, 史国权2   

  1. 1. 长春理工大学机电工程学院 长春 130022;
    2. 中国科学院苏州生物医学工程技术研究所 苏州 215163
  • 收稿日期:2017-10-12 修回日期:2018-02-20 出版日期:2018-10-05 发布日期:2018-10-05
  • 通讯作者: 石广丰(通信作者),男,1981年出生,博士,副教授,博士研究生导师。主要研究方向为超精密加工技术。E-mail:shiguangfeng@cust.edu.cn
  • 作者简介:丁艳春,女,1987年出生,博士研究生。主要研究方向为精密、超精密加工。E-mail:1224092966@qq.com
  • 基金资助:
    国家自然科学基金资助项目(51405031,51575057,51075042)。

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

DING Yanchun1, SHI Guangfeng1, SHI Guoquan2   

  1. 1. College of Electro-mechanical Engineering, Changchun Universityof Science and Technology, Changchun 130022;
    2. Suzhou Institute of Biomedical Engineering and Technology Chinese Academy of Sciences, Suzhou 215163
  • Received:2017-10-12 Revised:2018-02-20 Online:2018-10-05 Published:2018-10-05

摘要: 为研究光栅毛胚材料在机械刻划过程中滞留区的产生及分布特征。基于LEE和SHAFFER提出的正交切削滑移线场理论模型,在机械刻划塑流剖面内建立了带有滞留区特征的滑移线场模型,提出量纲一滞留区几何尺寸的计算方法。并结合有限元仿真方法获得了机械刻划三向分力,经拟合得到滞留区几何尺寸的演变规律,揭示了滞留区产生机理及分布特征。最后通过机械刻划试验,验证了槽面滞留区的分布特征及其对光栅槽质量的影响。研究结果表明:在一定的机械刻划加工工艺条件下,光栅槽面形成明显分界线,该线将光栅槽面分为塑性变形区和滞留区。因槽面分区成形机理和槽面质量不同,多道槽机械刻划槽面会发生非线性变形,最终将影响衍射光栅的光学衍射效果。此研究结果为从滞留区角度考虑大负前角刀具机械刻划槽形及槽面质量的控制优化问题提供了理论及试验依据。

关键词: 槽面质量, 槽形非线性, 滑移线场, 机械刻划, 滞留区

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

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