Generally,automatic screw machines fall into several categories;single—spindle automatics,multiple-spindle automatics and automatic chucking machines. Originally designed for rapid,automatic production of screws and similar threaded parts,the automatic screw machine has long since exceeded the confines of this narrow field,and today plays a vital role in the mass production of a variety of precision parts.
Quantities play an important part in the economy of the parts machined on the automatic screw machine.Quantities less than 1 000 parts may be more economical to set up on the turret lathe than on the automatic screw machine.
The cost of the parts machined Can be reduced if the minimum economical lot size is calculated and the proper machine is selected for these quantities.