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Article: High-speed spindle beats out belt. (Precise Corp. variable-frequency spindle used by RS Precision Industries Inc.)
- Article from:
- Tooling & Production
- Article date:
- April 1, 1991
CopyrightCOPYRIGHT 1991 Nelson Publishing. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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The challenge for RS Precision Industries Inc, Long Island, NY, was to grind semicircular ball tracks of case-hardened bearing steel to tolerances of [+ or -]0.0004" and parallelism of 0.000 080". A fine finish without minute waviness or chatter was a must. A belt-driven attachment to their Brown & Sharpe surface grinder proved the validity of the concept of using a small-diameter abrasive wheel, but too much spindle power was lost and the auxiliary spindle could not be held perfectly square. This variation and changes in belt tension caused inaccuracies. Also a single-point dressing tool quickly developed a flat and needed constant adjustment.
The solution was ...
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Article: AMERICAN PRECISION INDUSTRIES ANNOUNCES THIRD ...
PR Newswire;
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700+ words
... ... 18 /PRNewswire/ -- American Precision Industries (NYSE: APR) announced today its ... chief executive officer of American Precision Industries, said, "While down from results ... positive performance trend." American Precision Industries is a diversified manufacturing company ...
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