The recently introduced TTL Series from CMZ offers numerous possibilities to reduce cycle times. One of these functions is ‘superimpose’ machining.

With this function, the movement of the master channel (turret) is added to the slave channel (sub-spindle); in other words, it makes possible to machine two tool trajectories using the same turret station.
When the geometry of the part permits, it is possible to cut with four tools at the same time, performing a double-balance cutting process. One of the turrets and the sub-spindle (tool 1 + tool 2) will be programmed with the superimpose function, while the other turret will be programmed as a single trajectory (tool 3), and the second tool from this station (tool 4) will benefit from movement of the sub-spindle without the need to link an ISO code.
Four-tool simultaneous cutting is recommended for roughing processes in symmetrical parts. However, it should not be used in finishing operations as one of the tools is not controlled.
Programming a superimposed operation should not worry machine users, says CMZ, as several macros have been developed to ease calculation. Tool and work offsets will be transferred to the slave path before starting the combined machining movements. If users need assistance on how to program the TTL, the company’s Service Department can assist.
With CMZ’s ‘a star is born’ campaign, users can configure a TTL for themselves, and receive a made-to-measure offer using the company’s online calculator.
For further information www.cmz.com

Mills CNC, the exclusive distributor of Doosan machine tools in the UK and Ireland, has supplied a large-capacity vertical turning lathe to Unilathe Ltd, a precision subcontract specialist based in Stoke-on-Trent. The machine, a Fanuc controlled Doosan VT1100, has been positioned adjacent to another Doosan VT1100 machine to create a flexible, high-productivity vertical turning cell.

Components are typically machined in small batches, and are made from hard and difficult-to-machine materials that include titanium, Inconel and Jethete (a corrosion-resistant, hardened and tempered steel). A primary objective behind the new VT1100 investment was Unilathe’s desire, and determination, to secure new aerospace business.
Explains Andrew Sims, Unilathe’s managing director: “Our efforts have been [and are] focused on repositioning Unilathe in the sector. We want to move away from being perceived as a company that only offers first and second-stage machining of castings and forgings, to one that can machine and deliver high integrity components from start to finish to aerospace customers – similar to what we provide for customers in other sectors and industries.”
A strategic audit undertaken by the company examined its internal machining capabilities and revealed that its future aerospace ambitions would be well served by strengthening its vertical turning capacity and, in particular, by acquiring an additional vertical lathe adept at undertaking roughing, semi-finishing and finishing operations on aerospace components like rings, seals and rotor shafts.
Says Sims: “We are an advocate of Doosan machine tools; they perform well, are reliable and represent good value. The fact that they are backed by Mills CNC’s applications and aftersales service and support, makes them even more of an attractive proposition.”
For further information www.millscnc.co.uk