为加工大直径薄环类工件设计了专用的U型结构夹具。
Special U-structure fixture is designed for machining thin rings with big diameter.
基于数字图像处理技术，提出大型轴类工件平行度测量方法。
The method of measuring the parallelism for large-scale shafts based on digital image processing was proposed.
如加工轴类工件时，总是先加工中心孔，再以中心孔为基准加工外圆表面。
When machining shaft parts, always machining center hole, and then to the center of the center hole for the processing of the outer surface.
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