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A machine for dry grinding gears

02/01/2016
Author:
William Leventon
Italy-based Samputensili S.p.A. unveiled a machine that eliminates the need for cutting oils when manufacturing gears, thereby reducing grinding costs. During grinding, oil-based lubricants cool the workpiece, as well as reduce friction and help evacuate chips. On the downside, however, oil use accounts for a significant amount of a grinding operation’s total cost. Expensive equipment is required to supply, chill, catch and wash away oil in grinding processes. In addition, Samputensili estimates that oil-treatment equipment accounts for 75 percent of the energy consumed by a grinding machine.
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What pressure?

Dr. Jeffrey Badger, the host of Cutting Tool Engineering's Grinding Doc Video Series, fields a question from a shop grinding hardened steel with a CBN wheel. Though the shop is using a high-pressure cleaning nozzle, it doesn't seem to help much. The shop wants to know how much pressure they need in the nozzle?

Meister expands manufacturing of large wheels for OD grinding

Meister Abrasives USA Inc. in December 2015 added an advanced CNC manufacturing system to its lineup, making it possible for the North Kingstown, R.I., company to manufacture large diameter external wheels in the United States using equipment, materials and a manufacturing process identical to those used by its parent corporation in Switzerland. The new CNC system is said to be capable of producing large vit CBN and diamond abrasive wheels up to 1,225mm (about 4') in diameter.

Keep the burn at bay

A shop creep-feed grinding hardened steel using a water-based coolant kept running into trouble after grinding for a few hours. Everything would be grinding along fine, but then—WHAM—really bad burn would bring the job to a halt. And the burn wouldn't go away until the shop dressed the wheel again. 

Dr. Jeffrey Badger, the host of Cutting Tool Engineering's Grinding Doc Video Series, provides some insight and a solution in the 65th episode of the video series.

Superfilter 'talks' to grinders

12/01/2015
Productive Times challenge: Effectively clean and cool grinding oil applied in latest-generation grinders. The solution: A filtration and chiller system that directly communicates with grinding machines.
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