一种大跨距短轴线高精扫描摆镜同轴孔精密镗削方法

By combining a special mounting fixture with an auxiliary reference block, the mounting and alignment process was optimized, which solved the problem of insufficient machining accuracy of the bearing hole of the scanning mirror and achieved high-precision coaxial hole machining.

CN118143316BActive Publication Date: 2026-07-17INST OF OPTICS & ELECTRONICS CHINESE ACAD OF SCI

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF OPTICS & ELECTRONICS CHINESE ACAD OF SCI
Filing Date
2024-04-28
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies cannot effectively eliminate the effects of mounting deformation, alignment errors, and machine tool system errors when machining the bearing holes on both sides of the scanning mirror, resulting in machining accuracy failing to meet high precision requirements.

Method used

By employing specialized fixtures and combined repair methods, along with auxiliary reference blocks and constant temperature treatment, the fixture alignment process is optimized. Through multiple adjustments and precision boring steps, machining accuracy is ensured.

Benefits of technology

The accuracy of the cylindricity, coaxiality, and parallelism of the bearing holes on both sides of the scanning mirror reached 0.005mm and 0.01mm respectively, meeting high precision requirements and eliminating the influence of mounting deformation and machine tool errors.

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Abstract

本发明公开了一种大跨距短轴线高精扫描摆镜同轴孔精密镗削方法,通过设计矩形箱式结构的专用装卡工装与组合修配,避免了直接装卡所述扫描摆镜工件造成的装卡变形对加工精度的影响,并借助辅助基准块,优化了所述扫描摆镜工件的装卡找正方法,消除了装卡与找正误差、机床工作台回转角度误差及机床主轴轴线与理论零轴偏差对所述扫描摆镜工件两侧轴承孔调头镗削加工精度的影响,有效地保证了所述扫描摆镜工件两侧轴承孔的圆柱度及同轴度均小于0.005mm,且两侧轴承孔对光学基准面的平行度小于0.01mm,两侧轴承孔定位端面的平面度≤0.002mm、且对所述扫描摆镜工件光学基准面的垂直度≤0.01mm,形位公差等级高于IT1级。
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