Abstract
The beginning and ending position on the working surface of grinding wheel when involute helical gear is ground with rack-tooth worm wheel are geometrically analyzed. The effects of operating parameters on the grinding mechanism of gear tooth surface are discussed. Moreover, it is confirmed that the tendency of the experimental results agree well with that of the analytical results. As the results, the following facts are clarified. (1) The ending position on the working surface of grinding wheel is the generating position of gear tooth profile in leading side and is behind it in trailing side. (2) The working length of grinding wheel, when infeed of wheel is large and feed of workpiece is small, is longer in leading side than in trailing side. (3) The wheel wear is apt to increase when the working length is shorter.
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