A lathe specially designed and set up for the purpose of mass-producing specific parts by automatically performing several machining operations in succession, such as turning, threading, milling, counterboring and parting off. With some automatic lathes it is possible to feed the material in long lengths, which will be made into many parts without further attention from the operator. Sometimes blanks on a conveyor are fed into the lathe at great speed, and some automatic machines have a number of rotating spindles and cutting tools which are horizontally or vertically mounted.