cnc parts by turn-milling

The turn mill machining is a machining of a part on a turn mill machine, when after the part has been fixed once, there can be done turning and milling operations. Turn-milling is a process whereby a milling cutter machines a rotating workpiece. This method combines milling and turning techniques and has many advantages, but only relatively recently the introduction of multitasking machine tools has allowed turn-milling to display its benefits.

Turn-Mill module includes powerful turn-milling methods to program multi axial machining with support Multi-tasking Turn-Milling centers with live tooling, include CNC Swiss-Type Lathe. Easy interface and features of the lathe module the ability to program roughing, finishing, grooving, threading and part-off machining operations.

Despite the fact that turn-milling seems to be very similar to turning (“turning by rotating mill”), there is a substantial difference between these two machining processes.

What are the advantages of turn-milling and where is its application practical?

Machining materials produces long chips. In turning, chip disposal is difficult, and finding a proper chipbreaking geometry of a cutting tool is not such a simple task. The milling cutter used in turn-milling generates a short chip that considerably improves swarf handling. Take for example, machining eccentric areas of rotating components such as crankshafts or camshafts. In turning, off-center masses of these components (crank journal, eccentric cam, etc.) cause unbalanced forces that adversely affect performance.

Turn-milling with its low rotary velocity of a workpiece gives the possibility to prevent this negative effect. Also, consider machining heavy-weight parts; their rotation, which defines cutting speed in turning, is connected with limitations of the main drive of a machine tool. If the drive does not allow rotation of large masses with required velocity, cutting speed is far from the optimal range, and turning performance will be low. Turn-milling provides a way to overcome the above difficulties effectively.

The cutting speed in turn-milling is defined by the peripheral speed of the milling cutter and not by the rotary velocity of the workpiece as in turning.