How to Maximize Precision Output of Small, Complex Medical Parts

The compact, high precision Quicktech S-32 ATM 9-axis twin spindle mill/turn center from Absolute Machine Tools, Inc. (Lorain, OH) combines integral-motor main- and sub-spindles with a 190 deg B-axis milling head and a fast automatic tool changer to maximize output of small, complex parts. “These compact, versatile machines enable manufacturers to produce precise, complex smaller parts quickly, with the added benefits of the accuracy and consistency that result from processing the parts on a single machine tool. This machine is ideal for medical applications,” said Steve Ortner, the president and owner of Absolute Machine Tools, the exclusive distributor of Quicktech machines in North America. The S-32 ATM has 9 axes total, including two turning spindles and a 190 deg B-axis milling spindle, serviced by a 24-tool arm-type automatic changer. Six fixed gang-type ID turning tools at sub-spindle result in a total capacity of 30 tools. The compact 3,750 mm (150 in) x 2,175 mm (87 in) x 2,025 mm (81 in) footprint (including chip conveyor) promotes efficient use of manufacturing floor space.

Both the main spindle and sub-spindle feature 6,000 rpm, 5 hp, high torque integral motors and have 42 mm collet chucks (or 5 in three-jaw hydraulic chucks) with capacity for 30 mm bar stock. The spindles feature a continuous C-axis with a braking system and are fully synchronized for fast and accurate part transfer. The 10,000 rpm, 3 hp, HSK40-T B-axis milling spindle services both turning main- and sub-spindles and has a working range of 190 deg (±95 deg from vertical). The B-axis is locked in position for rigid turning operations. The 24-tool arm-type tool changer, with an HSK-40T quick-change tooling system, produces tool change times of only 1.3 seconds. The sub-spindle moves in the X, Y and Z-axes, and in the X-axis can move above and below the centerline to clear the B-axis and enable it to have full tilting capabilities. At the sub-spindle are six gang-type turning tools that allow simultaneous turning and milling operations. Rigid tapping is standard.

The S-32 ATM is built for precision and durability. The main and sub-spindles employ P4 high-precision bearings for stability and heavy cutting ability. The machine frame and all major components are heavy Meehanite cast iron. Large 35 mm Hiwin roller-type linear guideways in all linear axes provide stability and permit heavier machining. Substantial 32 mm ballscrews are double anchored, pre-tensioned and direct coupled to the machine’s servomotors. This mill/turn center is equipped with a Mitsubishi M830W control with a 475 mm (19 in) LCD, and all spindles and axes employ Mitsubishi AC servomotors and amplifiers. Also available is a Fanuc OiT-F control with a 275 mm (15 in) LCD and matching Fanuc motors and drives. Standard machine features include a bar feeder interface, parts conveyor and catcher, chip conveyor, collet chucks and a 400 psi coolant pump.

Absolute Machine Tools, Inc., 7420 Industrial Parkway, Lorain, OH 44053, 440-960-6911, Fax: 440-960-6918, www.absolutemachine.com.