The generation principle and mathematical models of a novel cosine gear drive

https://ir.nctu.edu.tw:443/bitstream/11536/30322/1/000089243800013.pdf

Spur gear generation by shaper cutters

In the field of gear precision manufacturing, the CBN shape grinding technique is of great importance. In this research, a mathematical model for the profile of CBN grinding wheel base body has been developed based on the theory of gear engagement; the modification of the gear shape is introduced into the design of the CBN grinding wheel. Biarc segments are used to approximate the theoretical profile. Approximation deviation can be controlled within prescribed tolerance under optimized conditions. A series of wheels were made to ascertain the validity and effectiveness of the presented method, the final gear precision reaches the fifth class of GB10095-88 (China).

Design and application of CBN shape grinding wheel for gears

Profile correction of a helical gear shaping cutter using the lengthwise-reciprocating grinding method

Development of software for the design of a pinion cutter

A new method of calculating grinding-wheel profiles for finishing pinion cutters to shape spur and helical gears with an arbitrary profile is developed using the theory of the element removal method (ERM) previously proposed by the authors. In order to show the usefulness of this method, the profiles of the grinding wheel for finishing the pinion cutter (mn = 3) for Novikov gears with concave teeth are calculated numerically, and then the profiles of the pinion cutter finished by the grinding wheel are calculated. The difference (calculation error) between the given and the calculated profile of the pinion cutter was less than O.1 μm before regrinding. Profile errors of the cutting edges after regrinding are shown in terms of the number of teeth, the helix and rake angles and the regrinding stock. The effective clearance angles of cutting edges, which produce some broblems in gear finishing, are calculated from changes in the profiles of the cutting edges before and after regrinding.

/pdf/design-and-manufacture-of-pinion-cutters-for-finishing-gears-51dw8q2xq1.pdf

Design and Manufacture of Pinion Cutters for Finishing Gears with an Arbitrary Profile

A new method of calculating grinding-wheel profiles for finishing pinion cutters to shape spur and helical gears with an arbitrary profile is developed using the theory of the element removal method (ERM) previously proposed by the authors. In order to show the usefulness of this method, the profiles of the grinding wheel for finishing the pinion cutter (mn=3) for Novikov gears with concave teeth are calculated numerically, and then the profiles of the pinion cutter finished by the grinding wheel are calculated. The difference (calculation error) between the given and the calculated profile of the pinion cutter was in the range of about 0.1μm before regrinding. Profile errors of the cutting edges after regrinding are shown in terms of the number of teeth, the helix and rake angles and the regrinding stock. The effective clearance angles of cutting edges, which produce some problems in gear finishing, are calculated from changes in the profiles of the cutting edges before and after regrinding.

Ming Shao

Papers

Design and Manufacture of Pinion Cutters for Finishing Gears with an Arbitrary Profile

Design and manufacture of pinion cutters for finishing gears with an arbitrary profile.