When turning multi-thread threads, the thread splitting problem must be solved. If there is an error in the thread dividing line, the multi-thread thread pitch will be different, which will seriously affect the meshing precision of the internal and external threads or the multi-head worm and the worm wheel, and reduce the service life. To this end, we must pay attention to and do the threading work. In practice, I use the hanging wheel splitting method in the circumferential line method, which can quickly and accurately perform thread dividing, without adding other devices, and is convenient to operate.
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