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5-Axis VMC for Hard Metal Machining

With 70 HP all-steel geared head spindles offering torque ratings up to 1,200 ft lbs., plus 200 bar/3,000 PSI high pressure coolant for integrated turning, Starrag's new STC-MTV 5-axis mill-turn machining centers are specifically targeted for hard metal machining of a wide range of workpieces. Applications include casings and gearboxes in the aerospace engine industry and oil and gas applications in the energy industry.

The two new machines, models MTV 1000 and MTV 1250 offering 8,000 RPM/700 ft-lbs. of torque and 4,500 RPM/1,200 ft-lbs. plus 200 bar/3,000 PSI high pressure coolant for integrated turning, are joining the STC-MTV family of horizontal machining centers (HMCs).

These new MTV models are designed to offer effective single set-up milling, boring, drilling and tapping, as well as turning of materials such as Ti6AL4V and Ti5553 titanium alloys, nickel-based super alloys and high alloy steels, providing enhanced surface finishes on even complex and thin-wall parts.

Workpieces weighing up to 11,000 lbs. can be processed on the MTV 1250 (up to 6,613 lbs. on the MTV 1000) within the machines' X, Y and Z axes travels of 67" x 82" x 74" (MTV 1000) and 86" x 82" x 74" (MTV 1250), and both machines offer rapid traverse rates of 1,770 IPM. Additionally, component diameters of up to 74" and 94" on the MTV 1000 and MTV 1250 can be accommodated.

High metal removal rates are possible with the all-geared A-axis spindle drive, where the compact 1D head with minimal distance between the spindle nose and A-axis enables the use of very short tools and large bearings. "This provides increased levels of stability and rigidity compared to conventional motor spindles," said a company spokesperson.

The virtually wear-free steel worm wheel offers high stiffness and increased damping. Indeed, a specially coated damping disk in the 1D head, combined with optimal parameter settings from the Siemens 840D CNC, makes heavy roughing possible, along with semi-finishing and finishing in 5-axis operation.

Integrated high-pressure coolant permits efficient one-hit turning and the machines' 30 HP angular automatic milling head enables easy access to internal surfaces and features, thus further optimizing single set-up operation. The angle head is loaded automatically from the tool magazine and tools can also be automatically changed into/out of the head.

The C-axis CNC rotary table offers 500/400 RPM with torque ratings of 2,950/4,425 ft-lbs. on the MTV 1000 and MTV 1250.

STC-MTV machines can be used stand-alone or integrated into a cell or flexible manufacturing system and, if required, with other Starrag machines and utilize central tool handling and pallet transport/storage. They can also be integrated with additional processes such as coordinate measuring, part marking, deburring and washing.

For more information contact:

Starrag USA Inc.

North American Headquarters

Skyport Business Park

2379 Progress Drive

Hebron, KY 41048


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