Gear Finishing With a Nylon Lap

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説明

<jats:p>The objective of this research is to develop a new lapping process which can efficiently make tooth flanks of hardened steel gears smooth as a mirror. The lapping is carried out using a nylon helical gear as a lap and a simple mechanical device. This paper first shows the lapping machine designed and manufactured by the authors and the procedure and principle of the lapping. And as a result of the lapping tests, it becomes clear that the process can make tooth flanks of hardened steel gears smooth in a short time and it is important to carry out the lapping for a short time using a nylon gear which has a large helix angle and high-teeth under a condition of high rotating speed and light load in order to prevent increases of tooth profile errors. Moreover the lapping process accompanied by micro vibrations of a nylon gear is tested. From the result, it is found that the addition of micro vibrations enables this process to reduce also tooth profile errors of work gears. The running noise and the load carrying capacity of lapped gears are considered.</jats:p>

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