How to arrange the process of machining a threaded hole on a curved surface?

Working procedure: rough milling-fine milling-drilling thread bottom hole-tapping.

At present, there are two main ways to process threaded holes: tap tapping and thread milling. The traditional thread processing method adopts tap tapping. In modern thread processing, thread milling has gradually replaced the traditional processing method.

Thread milling is the use of thread milling tools to process large-hole threads and threaded holes of difficult-to-machine materials. Thread milling cutter can be divided into two types: machine-clamped carbide blade milling cutter and integral carbide milling cutter.

The machine tool can not only process holes with thread depth less than the blade length, but also process holes with thread depth greater than the blade length. Integral carbide milling cutter is used to process holes with thread depth less than the length of the cutter.

Extended data:

Processing range

For blind holes or large-aperture through holes, spiral milling is often chosen because twist drills are too slow or impossible to process. Moreover, because the selected tool has no bottom edge, it is more suitable for machining with small cutting depth, high speed and large feed.

Spiral milling hole is a machining method based on spiral cutting method. Spiral milling hole has a feature: the cutter moves a cutting height in the Z-axis direction every time it is spiral milled.

References:

Baidu encyclopedia-thread milling cutter