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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Journal Article•
TL;DR: In this paper, a parametric modeling of the slider guide rod rocker punch mechanism was constructed by the software ADAMS, and then this punched mechanism was also imitated by ADAMS.
Abstract: To improve the quality of stamping body design,shorten and reduce the design cycle and cost,optimized the design of slider guide rod rocker punch mechanism.By analyzing the slider guide rod rocker punch mechanism's working theory,not only the mathematical model was established,but also the designing variables were analyzed.The parametric modeling of slider guide rod rocker punch mechanism was constructed by the software ADAMS,and then this punch mechanism was also imitated by ADAMS.The aim of the optimal design was the minimum of the pressure angle and driving torque,and the optimal design ultimately determined the parameters of the main design variables which impacted the pressure angle and the driving torque.The results of optimization showed that the punch mechanism pressure angle is decreased by 91.5% optimized and the drive torque is decreased by 53.3% after optimization,the optimal effect is obvious.
1 citations
01 Jan 2019
1 citations
TL;DR: In this article, the authors presented an advanced application of the optimal design system to the automatic design of the above-mentioned special internal gears that require an extraordinarily difficult and special designing technique.
Abstract: Hypocycloid reduction gears produce a maximum reduction ratio, if the difference in the numbers of teeth between the internal gear and pinion is reduced to 1. However, such a limit design is very difficult, because such a reduction of the difference in the number of teeth induces various interferences. An internal gear having a zero difference in the number of teeth is best suited for a planetary gear mechanism that transmits its absolute rotation to the driven shaft at the ratio of 1 : 1. However, such a special gear set needs an operating pressure angle of 90 degrees, and thus cannot be designed by conventional formulae for ordinary internal gears. The author has so far devised an optimal designing system for the automatic design of internal gears. This paper presents an advanced application of the optimal design system to the automatic design of the above-mentioned special internal gears that require an extraordinarily difficult and special designing technique. Trial fabrication was also undertaken to confirm the designing computations obtained.
1 citations
27 May 2011
TL;DR: Based on elastohydrodynamic Lubrication theory (EHL), the EHL oil film thicknesses and those distributions for two operation cases on meshing line were calculated.
Abstract: Based on elastohydrodynamic Lubrication theory (EHL), the EHL oil film thicknesses and those distributions for two operation cases on meshing line were calculated: one case is the sun gear as the driving gear and another case is the ring gear as the driving gear in the Planetary Gear Transmission. From the graph, gear lubrication can be reflected by the gear mesh lubrication at the node. The worse Lubrication occurred when the planetary gears mesh with the ring gear for the sun gear as a driving gear. By comparing many calculations the lubrication oil film thickness can be significantly increased by the raise of oil viscosity and gear pressure angle. Design on lubrication of the gear to reduce friction and wear is necessary. The increase of oil film thickness can improve the lubrication of gears and prevent wearing and reduce the production cost of gears, which have great practical value.
1 citations
Patent•
10 Feb 2004
TL;DR: In this article, the authors proposed a gear mechanism for converting reciprocating motion into rotation and it can be used in drives of bicycles, which contains post, driven gear wheel (ratchet), driving member executing reciprocation motion (slider or rocker) and intermediate member (pawl) hinge fastened on driving member to form gear meshing with ratchet.
Abstract: FIELD: mechanical engineering; transport engineering. SUBSTANCE: invention relates to gear mechanisms designed for converting reciprocating motion into rotation and it can be used in drives of bicycles. Proposed mechanism contains post, driven gear wheel (ratchet), driving member executing reciprocating motion (slider or rocker) and intermediate member (pawl) hinge fastened on driving member to form gear meshing with ratchet. Pawl toothed rim designed for engaging with ratchet is made with pitch surface whose profile is logarithmic spiral with pole in pawl hinge joint. Pawl of mechanism can have lantern wheel gearing for engagement with ratchet, and pressure angle of alpha = 35°±5°. EFFECT: provision of constant pressure angle at working stroke of mechanism, improved quality of operation. 2 cl, 3 dwg
1 citations