Abstract
News editors obtained the following quote from the background information suppli ed by the inventors: “Threads are widely used in mechanical connection.The mach ining accuracy of threads has an important impact on the quality of the threads.There are many thread machining methods, such as thread rolling based on plasti c deformation, turning, milling, tapping, threading, grinding, cyclone cutting b ased on cutting, which are usually machined on lathes and milling machines.Amon g them, tapping is a main way to machine the internal threads.Tapping is to scr ew the tap into the predrilled bottom hole on the workpiece with a certain torqu e to machine the internal thread on the inner cylindrical surface of the workpie ce.
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