Limiting conditions in a gear-shaping process
01 Jul 1983-International Journal of Production Research (Taylor & Francis Group)-Vol. 21, Iss: 4, pp 543-552
TL;DR: In this article, the analysis of inherent errors in the gear-shaping process is discussed and guidelines to avoid such errors, taking into account the effect of tip-relief angle.
Abstract: A gear-shaping process is used to cut cylindrical gears, both external and internal, with a pinion type of cutter. However, certain ‘inherent errors’ are present in the process which limit the range of the number of teeth on the gear to be cut. This paper deals with the analysis of inherent errors and suggests guidelines to avoid such errors, taking into account the effect of tip-relief angle
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TL;DR: In this article, the authors report the minimum achievable quality based on the maximum theoretical height of the irregularity for the involute spur gears of the generator. But they do not consider the effect of the number of cuts made by the generating tool on the profile of the gear.
Abstract: In gear generation processes, the involute profile of the gear is obtained as an envelope of the successive cuts made by the flank of the generating tool. The irregularities of the profile thus generated limit the quality of the gear. This paper reports the minimum achievable quality based on the maximum theoretical height of the irregularity for the involute spur gears.
2 citations
TL;DR: In this paper, a method of obtaining the effective profile and its deviations from the theoretical involute form required is presented, and the effect of regrinding on the profile error of the cutting edge is also brought out.
Abstract: Gear shaping cutters are provided with top-relief and rake angles to facilitate effective cutting. Due to this, the profile representing the cutting edge (effective profile) is altered. This paper outlines a method of obtaining the effective profile and its deviations from the theoretical involute form required. This paper also deals with a method that modifies the pressure angle, while maintaining zero deviation at the reference circle, so that the effective profile closer to the theoretical form is obtained after grinding the rake face. The Golden section optimization method is used to get the optimum value of the modified pressure angle. The effect of regrinding on the profile error of the cutting edge is also brought out. The method suggested in this paper will be useful to the designers and manufacturers of gear shaping cutters.
1 citations
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TL;DR: In this paper, a method for simulating the shaping process while cutting the internal gear is described, and a thorough analysis has been carried out on the simulated profiles and suggestions are made to reduce the deviation from the theoretical profile.
8 citations