摘要: |
针对高精度薄壁光机部件定心加工精度难控制,提出基于精确计算装夹力和非接触式在线检测的装夹变形量控制方法。通过理论计算和有限元仿真获得定心加工三种工况下的装夹力数值,搭建了装夹变形实时检测系统,采取建立高精度连接面、精准调整装夹工艺螺钉拧紧力矩等措施控制光机部件装夹变形量,在线预估光机部件的加工精度。试验表明,该方法可实现光机部件设计精度指标,为解决同类问题提供借鉴。 |
关键词: 薄壁;光机;在线测量;装夹变形;定心加工 |
基金项目: |
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Research on Machining Precision Control of Opto-mechanical Parts Based on Online Measurement Technology |
Han Baohui Chang Jiang Li Song Chen Ying Jiang Xilong Wang Linran Ma Jun
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Beijing Institute of Space Mechanics & Electricity, Beijing 100094
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Abstract: |
Aiming at the difficulty in controlling the optical alignment machining accuracy of high-precision thin-walled opto-mechanical components, a control method based on accurate calculation of clamping force and non-contact online detection of clamping deformation monitoring was proposed. Through theoretical calculation and finite element simulation, the clamping force values under three working conditions of centering processing are obtained, and a real-time detection system for clamping deformation is built. Measures such as establishing a high precision-connection surface and accurately adjusting the screw tightening torque of the clamping process are adopted to control the clamping deformation of the opto-mechanical components, and estimate the machining accuracy of the opto-mechanical components online. Experiments show that this method can realize the design accuracy index of opto-mechanical components and provide reference for solving the similar problems. |
Key words: thin-wall;opto-mechanical;online measurement;clamping deformation;optical alignment machining |