Topic
Pressure angle
About: Pressure angle is a research topic. Over the lifetime, 1373 publications have been published within this topic receiving 10245 citations. The topic is also known as: angle of obliquity.
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Patent•
06 Aug 2010TL;DR: In this paper, an internal gear machining method and a machining device for grinding a tooth profile of a workpiece using a barrel-shaped threaded grinding wheel are described. But they do not specify the geometry of the workpiece at a tooth face.
Abstract: An internal gear machining method and an internal gear machining device, are provided for grinding of a tooth profile of an internal gear using a barrel-shaped threaded grinding wheel. An NC device functions as a tooth profile error correction means and reduces a measured pressure angle error of a workpiece at a tooth face by correcting the radial position, the lateral position of the grinding wheel, the turning angle of the grinding wheel, and the helical motion; reduces a measured error in the direction of a tooth trace of the workpiece at a tooth face by correcting the helical motion; and reduces a measured tooth thickness error of the workpiece at a tooth face by correcting the radial position, the lateral position of the grinding wheel, and the helical motion.
6 citations
TL;DR: In this article, the contour surface of the indexing cam was first designed and analyzed with the aid of computer, and then the optimum design according to the requirements of dynamics was proposed.
Abstract: We first design and analyze the contour surface of the globoidal indexing cam with the aid of computer, and then do optimum design according to the requirements of dynamics. Finally, we discuss the problem of the pressure angle of the globoidal indexing cam mechanism in detail and put forward a new concept of equivalent pressure angle.
6 citations
TL;DR: In this article, the authors compared the reliability of the approximation formulae for tooth fillet stresses of thin-rimmed gears and revealed the influences of many factors on the stress value.
Abstract: To confirm the reliability of the approximation formulae for tooth fillet stresses of thin-rimmed gears (5) and to reveal the influences of many factors on the stress value, the tooth fillet and root stresses of a thin-rimmed gear calculated by the approximation formulae have been compared with the FEM calculated values : The influences of the radius of curvature of tooth fillet, of the width of the bottom of tooth space, of the pressure angle and of the loading position on tooth flank on the tooth fillet and root stress distribution for the case of a rack have been investigated and the scope of validity for the approximation formulae has been indicated. The calculation of the fillet and rootstresses for the loaded and unloaded teeth under a single and double tooth pair meshing was worked out by use of the approximation formulae, and the accuracy of calculation has been confirmed to be as good as that of FEM.
6 citations
TL;DR: A planetary differential reducer using internal gears with small tooth number difference is described in this paper, where essential points of the design are considered, and an example of the reducer is manufactured.
Abstract: A planetary differential reducer using internal gears with small tooth number difference is described : Essential points of the design are considered and an example of the reducer is manufactured. The idea is used that an internal gear with small tooth number difference has theoretically a contact ratio less than unity owing to trochoidal interference, but it is practically available under suitable condition. In case that the tooth number difference of the input-side gears is not the same as that of the output-side, such an especially high reduction ratio as 1/10, 000 is obtained. The calculation methods for strength and efficiency are given and the experimental value of efficiency is shown to agree with the theoretical one. The cost down of reducers with high reduction ratio is expected from using the above reducers which can be easily manufactured with standard pinion cutters of pressure angle 20°.
6 citations
Patent•
18 Jan 1999
TL;DR: In this article, a milling cutter has been used to adjust the angle of a C1 axis according to the positions of the Z-axis to reduce the cost of a speed change device of high speed and high load.
Abstract: PROBLEM TO BE SOLVED: To reduce cost of a speed change device of high speed and high load by executing topological cutting while adjusting so that face gear wheel pressure angle becomes a correct value, by the use of a milling cutter having tooth profile of straight line or similar to a straight line. SOLUTION: In a face gear, a straight tooth profile changing pressure angle at respective positions in the radial direction, a small bow shaped curved tooth profile, or a curved tooth profile curved inside and outside against a reference straight line is formed by topological cutting. When the straight tooth profile or the tooth profile similar to a straight line is manufactured by a face gear machining device 10, a milling cutter having the straight tooth profile or the tooth profile similar to a straight line is used, and cutting is executed so that the pressure angle of the face gear wheel becomes a correct value by adjusting the angle of a C1 axis according to the respective positions of the Z-axis. COPYRIGHT: (C)2000,JPO
6 citations