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。
A method of the image processing and measurement of the internal taper thread was proposed.
提出了电极圆锥内螺纹的图像处理及检测方法。
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