Ordinary lathe machining thread function expansion

CA6140 lathes often encounter some difficult-to-machine thread parts during processing, especially the standard three-head frequency pattern. Most of the lathe nameplates do not have three lead values. In order to solve the above problems, we have practiced a set of standard threading methods that can be used on the ordinary lathe processing nameplate. The number of thread processing types increased from 512 to 1252. If the machine tool exchange gear is slightly improved, as shown in Figures 1-4. Place

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