GF Machining Solutions (GFMS) recently introduced, via its Liechti Engineering AG subsidiary, a high-performance simultaneous five-axis machining dedicated to the fast and efficient processing of high-precision blades used in the aerospace and power generation industries. The Liechti Turbomill 500g, with a whole host of features that include Liechti’s g-technology and ‘Tool Pivot Point’ machining capability, helps manufacturers machine high-quality, competitively-priced blade components in double-quick time, reports the company.

The machine, equipped with a 20,000 rpm HSK-A63 StepTec spindle and up to 2000 rpm turning capability, boasts 2 g acceleration/deceleration rates and 60 m/min linear feed rates, ensuring that the Turbomill 500g gets down to business fast. According to GFMS, the machine helps to reduce part cycle times by up to 30%.

These ultra-fast processing speeds do not compromise accuracy or quality as the Turbomill 500g can achieve blade accuracies of ±0.015 mm, and surface finishes of 0.4 µm. To ensure high-productivity through unattended operation, users can opt to equip the Turbomill 500g with a bar feeder that automatically loads bar stock into the machine.

For consistent, high-quality part production, the machine features direct-drive motors (on all five axes), as well as an internal bed cooling system and intelligent thermal compensation that helps stabilise machining temperatures and reduce the effects of thermal drift. The machine is also equipped with Liechti’s 100 rpm Tool Pivot Point innovation which, available on the machine’s B axis, ensures fast and accurate contouring around blade edges. Reduced movement of the linear axis delivers shorter cycle times, higher positional accuracies and less mechanical wear.
For further information www.gfms.com

A new, larger size of travelling column machining centre in the DMF range manufactured by DMG Mori is now available to provide even more versatile production opportunities within a machining envelope of 3000 x 1100 x 1050 mm. The modular DMF 300|11 with B-axis swivelling spindle head represents a redesign of the established configuration that, compared with the previous series, has seen a 40% expansion in working volume and a 20% increase build rigidity.

The ±120° B-axis houses an integrated 15,000 rpm speedMASTER HSK-A63 spindle as standard, but is available with a 20,000 rpm version, or with a 12,000 rpm powerMASTER spindle offering 288 Nm torque.

The rigid table running the length of the DMF 300|11 accepts workpieces weighing up to 5000 kg for the three- and four-axis machining of large components. Alternatively, it is possible to insert an optional partition in the centre to allow safe pendulum machining of smaller parts.

Fully interpolative five-axis machining can take place at either or both ends, or else in the centre, following the addition of one or two optional rotary tables set flush into the main table surface. The machine can accommodate components weighing 1200 kg, while each C axis is available with a torque drive to provide the possibility of in-cycle turning operations at up to 700 rpm.

In some cases, it may be more expedient to add one or more A-axis rotary tables to enable five-axis operations on horizontally-mounted parts weighing up to 500 kg. It is equally feasible to mount a static column or tombstone on the table for work holding, swing the spindle head through 90° and use the DMF 300|11 as a horizontal machining centre with the added benefit of B-axis motion.
For further information www.dmgmori.com

Now available from the Engineering Technology Group (ETG) is the new DC12 model, a 5AX double-column vertical machining centre from Axile. The DC12 is the largest machine in Axile’s portfolio, suitable for handling heavy, lengthy workpieces. With a maximum table loading weight of 2500 kg, a maximum component length of 2.2 m and a workpiece diameter of 1.3m on a proprietaryintegrated rotary table of 1.2m, the DC12 takes on larger, heavier parts common in the aerospace, power generation and mould and die industries.

The double-column bridge construction provides greater rigidity, as well as better control over thermal deformation based on its sizeable RAM built as a box-in-box concept. Therefore, the DC12 is capable of both heavy-duty cutting and complex contouring while maintaining impressive precision levels, reports ETG.

With larger workpieces come more chips, meaning the DC12 features chip-removal efficiency to prolong tool life and ensure no residual interference. The DC12 has a chip auger, chip conveyor, through-spindle coolant, four coolant outlets at the spindle nose, air flushing and a chip wash-down facility.

Despite its dimensions, the DC12 incorporates directly driven servomotors, roller-type linear guideways, pre-loaded double nut ball screws and linear scales on the X, Y and Z axes to support 0.1 µm resolution. According to ETG, these features ensure that regardless of component size, the DC12 will deliver high levels of precision and repeatability.

From a flexibility perspective, the DC12 presents an HSK-A63 swivelling head B axis as well as a rotary C-axis table built into the large machine bed. This combination provides flexibility for large-part machining. The spindle is available with up to 90 or 120 HSK-A63 tools or 60 HSK-A100 tools.
For further information www.engtechgroup.com