Gear Production

MAR 2014

Gear Production

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32—GEAR Production Supplement Grinding Fluid's Molecular Structure Minimizes Heat Build-Up SintoGrind 353 gear-grinding fuid from oelheld is formulated from pure synthetic base stocks for demanding grinding tasks and is designed to handle hardened steels in excess of 65 Rc. Its lubricity is said to extend wheel life while minimizing heat build-up for increased productivity, and fewer surface cracks and burns. The lubricant consists of molecules saturated with a higher percentage of carbon-hydrogen bonds, leaving fewer sites for other, harmful molecules to attach and attack the molecular composition of the oil. According to the company, the uniform molecular structure provides improved friction reduction, maximum flm strength, limited air entrainment, a low evaporation rate and better performance in extreme temperatures. The fuid contains no hazardous elements and exhibits stable viscosity at a range of temperatures, the company says. oelheld U.S. Inc. | 847-531-8501 | oelheld.com. Helical Profle Milling Machine Enables Dry Machining Holroyd Precision's EX series 8EX helical profle milling machine is capable of producing complex components with helical screw profles and gear parts such as worm shafts ranging to 850 mm (33") in diameter. Designed with the rigidity necessary for rough cutting as well as the accuracy and precision required for fnish profle milling, the milling machine offers high stock removal rates and aggressive semi-fnishing capabilities. Dry machining is possible with little or no heat transfer to the component. The majority of generated heat is transferred to the swarf chips and removed from the machine via a conveyor system, the company says. The profle milling machine can cut a full-depth groove by transversing the cutting tool through the material at the relevant helix angle, while rotating the component in the C axis simultaneously. Accurate synchronization between the axes is maintained via CNC with digital drive technology controlling all axis movements. The machine features menu-driven, touchscreen CNC programming; quick- change tooling; high-power spindles; and on-machine probing. Other models capable of handling workpieces ranging from 150 to 650 mm (6" to 25") in diameter are available, as is a larger model that accommodates workpieces ranging to 1 m (40") in diameter. Holroyd Precision Limited | 44-1706526590 | holroyd.com 0314_MMS_Gear_Products.indd 32 2/13/2014 2:54:33 PM

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