Some methods of nc machining large inner thread for turbine parts by using nc milling cutter, preparation of milling tools and selection of milling parameters are introduced.
介绍了应用数控镗铣床加工水轮机零部件上的大尺寸螺纹的几种方法、铣削工具的准备及铣削参数的选择。
Impact tapping, as a novel technology of internal thread processing, has some important effect and a good applied foreground in the machining of small diameter thread, especially for thin board.
冲击攻丝作为一种新型的内螺纹加工技术，在解决小直径薄板内螺纹加工方面发挥着重要的作用，并具有良好的应用前景。
Screw thread gauge is the most extensive and practical detector in thread machining.
螺纹量规是螺纹加工中应用最广泛、最实用的检测工具。
For the different specifications of the fine pitch thread machining of parts, the method commonly used by re-programming.
对于不同规格的小螺距螺纹零件的数控加工，普遍采用重新编程的方法。
Adopting the new method to female thread machining, high hardness of thread can be acquired, and tap broken cases reduce significantly.
采用振动挤压攻丝新方法对钛合金材料进行内螺纹加工，螺纹表面硬度高，丝锥损坏现象显著减小。
The sea1ing ability of API connections mainly depends on the machining parameters of connections themselves, but the sealing aid of thread compound can not be overlooked.
螺纹接头的密封性主要取决于螺纹的加工参数，但螺纹脂对螺纹接头的辅助密封作用不应被忽略。
Grinding gear with the toroidal involute interior thread worm grind wheel is a new kind of process in hard surface gear finish machining.
针对面齿轮硬齿面磨削加工中存在的困难，提出用蜗杆砂轮磨削的双参数法来磨削面齿轮。
Various NC programs to machine sphericity thread form based on ellipse contour are developed using macro programs. This method can be used for the contour machining of all types of conic.
举例编制了椭圆轮廓上球形螺纹的宏加工程序，此方法适用于所有二次曲线的球形螺纹加工。
Those traditional method are confronted with several problems: having difficulty with conquering dynamic load in tapping and leading to thread breaking, block, abrasion and low machining quality.
这些传统加工方法存在的问题有：难以克服攻丝过程中的动态载荷，导致丝锥折断、阻塞、磨损等，同时加工质量不高。
Grinding gear with the toroidal involute interior thread worm grind wheel is a new kind of process in hard surface gear finish machining.
渐开面包络环面内螺纹蜗杆砂轮磨齿，是一种硬齿面齿轮精加工的新型工艺。
The failure of thread stick has nothing wrong with drilling collar and thread machining, it is only cause by uncorrected operation on site.
通过试验分析，认为钻铤材质和螺纹加工质量合格，钻铤粘螺纹与钻铤材质和加工质量无关，其主要原因是井队操作不当所致。
The failure of thread stick has nothing wrong with drilling collar and thread machining, it is only cause by uncorrected operation on site.
通过试验分析，认为钻铤材质和螺纹加工质量合格，钻铤粘螺纹与钻铤材质和加工质量无关，其主要原因是井队操作不当所致。
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