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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
16 Dec 2009
TL;DR: In this paper, a method for processing a spherical worm gear on a universal milling machine is presented, which consists of the following steps: setting a pressure angle of a metric module gear at 20 degrees according to the national standard specification, clamping a workpiece, namely worm gear to be processed on an index head of a workbench of the universal machine, and dividing a cross central line and a top width line after aligning.
Abstract: The invention provides a method for processing a spherical worm gear on a universal milling machine. The method comprises the following steps: setting a pressure angle of a metric module gear at 20 degrees according to the national standard specification; clamping a workpiece, namely worm gear to be processed on an index head of a workbench of the universal milling machine, and dividing a cross central line and a top width line after aligning; rotating the workbench of the universal milling machine to a helix angle beta according to the helix direction of a worm and the size of a helix angle of the worm, and accurately engaging the workpiece, namely worm gear to be processed and the worm with the same helix direction of engaging teeth thereof in the engaging of the workpiece, namely worm gear to be processed and the worm; rotating the index head of the workbench of the universal milling machine to an angle of 20 degrees at left or right so that tooth surfaces of an M surface and an N surface of the workpiece, namely worm gear to be processed are vertical to the surface of the workbench, and processing the tooth surface of the worm gear; and grinding the worm gear with the matched worm. The method has the advantages that the method can process the spherical worm gear on the universal milling machine, has low cost and short working period, reduces tooling, and is suitable for processing the single spherical worm gear under the special condition.

1 citations

Journal Article
Chang Yong1
TL;DR: In this paper, the concave-are bottomed follower disc cam mechanisms were investigated and the authors deeply discussed pressure angle formulae, fundamental sizes determination, cam work-outine design, follower arc-bottom work-area determination and sliding-coefficient formulAE, etc.
Abstract: Regarding the concave-are bottomed follower disc cam mechanisms as research object,this paper deeply discusses pressure angle formulae,fundamental sizes determination,cam work-outine design,follower arc-bottom work-area determination and sliding-coefficient formulae,etc.

1 citations

Proceedings ArticleDOI
06 Jan 2011
TL;DR: In this paper, the minimum integral of temperature on gear tooth face and the minimum value of the total volume of the transmission gears as the objective function, constrained multi-objective optimization is proceeded recurring to Particle Swarm Optimization, programming with MATLAB.
Abstract: According to gear engagement theory and Principles of Modern Tribology, by example, taking the minimum integral of temperature on gear tooth face and the minimum value of the total volume of the transmission gears as the objective function, constrained multi-objective optimization is proceeded recurring to Particle Swarm Optimization, programming with MATLAB. On this basis, studying from the point of mathematical logic and physical mechanism is proceeded for the sensitivity analysis of objective function to each design variable. The results show that with module and width of gear increasing, the volume of the meshing non-symmetrical gears increases, and it is more sensitive to module comparing with width of gears, integral temperature on gear tooth face declines as each of module, width of gear, pressure angle increases, module, pressure angle and width of gear are ranged in order of the degree of sensitivity and pressure angle is the most important factor for the surface integral temperature. Reasonably increasing the pressure angle on the working profile significantly causes the gear teeth surface integral temperature decline.

1 citations

Patent
16 Oct 2018
TL;DR: In this article, a double-arc harmonic tooth profile was proposed, which consists of external teeth of a flexible gear and internal teeth of an internal gear, where the external teeth are in an arc shape and the internal teeth are conjugate to the external features of the flexible gear.
Abstract: The invention discloses a novel double-arc harmonic tooth profile. The novel double-arc harmonic tooth profile comprises external teeth of a flexible gear and internal teeth of a steel gear, wherein the external teeth of the flexible gear mesh with the internal teeth of the steel gear; the tooth profile of the external teeth of the flexible gear is in an arc shape, and the tooth profile of the internal teeth of the steel gear is conjugate to the tooth profile of the external teeth of the flexible gear; the modulus of the external teeth of the flexible gear and the internal teeth of the steel gear is 0.2697, and the pressure angle of the external teeth of the flexible gear and the internal teeth of the steel gear is 21.75 degrees; and the number of teeth of the external teeth of the flexible gear is 160, and the number of teeth of the internal teeth of the steel gear is 162. According to the novel double-arc harmonic tooth profile, the double-arc tooth profile is different from a traditional involute tooth profile, the double-arc tooth profile replaces involute with an arc segment, and the modification operation is further carried out on tooth crests, so that the whole tooth profileis smoother and the bearing capacity of the teeth is higher.

1 citations

Journal ArticleDOI
TL;DR: In this article, a method for calculating the shedding cam pressure angle in cam-driven looms has been developed, and the main advantage over the conventional drawing method is that, because of the mathematical treatment and the use of computers, the numerous mechanical factors involved can easily be taken into account and the precision significantly improved.
Abstract: A method for calculating the shedding cam pressure angle in cam-driven looms has been developed. The main advantage of this method over the conventional drawing method is that, because of the mathematical treatment and the use of computers, the numerous mechanical factors involved can easily be taken into account and the precision significantly improved. There is also an analysis of the influence of the treadle pivot location and the harness movement on the pressure angle and the lateral force.

1 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202313
202244
202127
202038
201960
201841