Turret Head Rotates in Both Directions
IMTS 2018: OMG’s HT revolving turret heads can perform drilling, tapping, milling and boring operations.
OMG’s HT revolving turret heads can perform drilling, tapping, milling and boring operations. They can be fitted onto machine spindles and units or slides with one or more moving axes. They can also operate under their own motorization. They are available in four sizes: 160, 200, 250 and 360. Each station can be equipped with different tool couplings (ABS, DIN 55058, HSK, ER or a special). Multi-spindle heads or speed multipliers can also be fitted. With as many as 8 positions, turrets can perform different operations without having to reposition the workpiece.
The crown gears secure and release by means of hydraulic circuits, while a single motor selects the work station and starts tool rotation. Hirth crown gears ensure rigidity, the company says, and there are no moving parts subject to wear.
According to the company, capability to rotate in both directions enables switching quickly to the appropriate tool. Each spindle features a coolant circuit and optional through-spindle coolant capability. Each turret is controlled by the machine’s CNC.
One of the most common methods of tapping in use today on CNC machines is 'rigid tapping' or 'synchronous feed tapping.' A rigid tapping cycle synchronizes the machine spindle rotation and feed to match a specific thread pitch. Since the feed into the hole is synchronized, in theory a solid holder without any tension-compression can be used.
Fast CNC processing and high-pressure coolant contribute to removing metal at dramatic rates. But what should a shop know about cutting tools in high speed machining?
Cutting holes by interpolating a face milling cutter may be a better process choice for many rough and even finish boring operations. Software improvements and better cutter designs allow expanding use of the versatile face mill for hole making.