摘要: |
针对姿轨控发动机常平架正交孔系垂直度要求高,加工难以保证的问题,基于齐次坐标变换方法,建立了五轴加工中心调头加工常平架轴承孔的垂直度误差模型。结合MATLAB计算软件,对常平架的垂直度误差进行了定量分析,实现了常平架垂直度误差影响因素的预测。针对模型设计加工试验,试验结果表明,理论计算和实际加工具有较好的一致性,该方法对常平架加工误差的控制具有一定指导作用。 |
关键词: 常平架;轴承孔;垂直度;齐次坐标变换;误差模型 |
基金项目: |
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Error Analysis of Bearing Hole Machining of Gimbal Mount Used in Attitude and Orbit Control Engine |
Zhang Xiaofeng Li Xuguang Liu Jun
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Xi’an Aerospace Engine Co., Ltd., Xi’an 710100
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Abstract: |
The vertical degree of two couple bearing holes of gimbal mount used in attitude and orbit control engine is hard to guaranteed. Based on homogeneous coordinate transformation, a machining error model for the boring of the 5-axis machining center is established. The vertical degree errors are analyzed by the error model using MATLAB software. The test results show that calculation errors are similar to the test data. The error calculation contributes to ensuring accuracy of vertical degree of bearing holes in gimbal mount. |
Key words: gimbal mount;bearing holes;vertical degree;homogeneous coordinate transformation;error model |