To this end, during the pre-machining the first workpiece to a good setup.
为此，在进行机械加工前，首先要将工件装夹好。
On the base of the program pre-reading and the smooth algorithm between lines for micro-beeline machining of CNC milling, the arc smooth algorithm with linear transformation is brought forward.
在数控铣微直线加工程序预读、直线段间平滑算法的基础上，提出了线性变换圆弧平滑算法。
The types and characteristics of the tools for machining the pre - hardened mould steel are introduced in this paper. The application and developing trend of these tools are discussed.
论述了适应于加工这种材料的刀具的种类和特点，以及国外应用情况和发展趋势。
The drawing process for producing the part is completed in one operation, and a hole for machining use is pre-punched to control the magnitude of radial stress.
采用一次拉延成型，并在其底部预冲工艺孔，可控制径向应力的大小。
Before completing linkage screw in the machining, finished products are needed to do the pre-tensile test.
连杆螺钉在加工完成后成品交验前，要求进行预拉伸试验。
They will build the most advanced technology system of ultra precision machining by pre-research and technology transformation in their country.
并还将通过预研和技改，建成国内最先进的超精加工技术系统。
For the convenience of casting, machining, transporting, etc, the beam of large-scale hydraulic forging press has always been designed as combined structure and connected with pre-stress bolts.
大型液压机的横梁由于铸造、加工、运输等原因，大多设计成组合结构，采用预紧螺栓组连接。
For the convenience of casting, machining, transporting, etc, the beam of large-scale hydraulic forging press has always been designed as combined structure and connected with pre-stress bolts.
大型液压机的横梁由于铸造、加工、运输等原因，大多设计成组合结构，采用预紧螺栓组连接。
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