Machine Tool product review for March 2013

United Grinding offers universal cylindrical grinder

United Grinding Technologies Inc.’s Studer favoritCNC universal cylindrical grinder is for processing medium-sized workpieces in individual and serial production. The machine offers a 25.6″ grinding length, a 6.9″ center height, a workpiece-weight capacity of 176 lbs. and accepts grinding wheels with maximum diameters of 20″×2.5″×8″. The machine bed is made of solid Granitan S103 to enhance damping behavior and ensure a fine workpiece surface finish, according to the company. The V and flat guide ways for the cross slides are molded directly into the machine base and are finished with a nonabrasive Granitan S200 slide-way coating. The surface structure prevents the slides from hydroplaning and eliminates the stick-slip effect. The longitudinal and cross slides are manufactured from gray cast iron and have ground V and flat guide ways, with the distance between guide ways optimally suited to the machine’s overall rigidity, according to the company. The slides are advanced by 40mm-dia. circulating ballscrews connected to a three-phase servomotor via torsion-resistant, bellow-type couplings. The turret wheelhead can be used for external and internal grinding. The turret can be equipped with an extra grinding wheel and internal grinding spindle for this purpose. The user can manually index the turret wheelhead in a Hirth gear within a swiveling range of -15°/ +195°. Options include in-process gaging, balancing systems, contact detection and length positioning.

United Grinding Technologies Inc.
www.grinding.com

Belt machines for continuous blasting

Rosler Metal Finishing USA LLC’s RDGE series wire mesh belt machines are for continuous blasting treatment of flat and dimensional components. With four or eight high-power Hurricane blast turbines vertically or horizontally mounted around the housing, the machines can be used to treat complex parts, such as ones with pockets, intricate designs and difficult-to-reach areas, the company reports. A belt guiding system enables the lower turbines to blast only through one belt position to keep masking to a minimum. The wear-resistant wire mesh belt, with tension adjustment, reliably transports parts, according to the company.

Rosler Metal Finishing USA LLC
www.rosler.us

Automatic bandsaw cuts bars and pipes

Behringer Saws Inc.’s HBP-610A bandsaw is for cutting pipes and solid bars up to 24″ in diameter. The cast iron saw frame has a dual-column design, which utilizes positive hydraulic down feed. The solid cast bow frame eliminates vibration and provides rigid support for blade tensioning, according to the company. The high-torque, frequency-controlled saw drive provides cutting speeds from 62 to 426 sq. ft./min. An automatic pressure sensing system monitors the down feed power and saw blade pressure. Cutting pressure data is analyzed and the system automatically makes blade pressure adjustments as needed to ensure an optimal balance between the feed rate and blade pressure.