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•
15 Feb 2017
TL;DR: In this article, the authors proposed a robot joint precision transmission gear structure, which comprises an external gear and an internal gear, and a flexible small pressure angle design was carried out on the gear shape of the gear profile, so that the radial force component was reduced, the drive force component is improved, and the aim of precise, efficient and long-service transmission was achieved.
Abstract: The invention relates to a robot joint precision transmission gear structure, which comprises an external gear (1) and an internal gear (2). A gear shape of the external gear (1) is formed by a logarithmic spiral gear profile and a transitional gear profile, a gear profile of the internal gear (2) and the gear profile of the external gear (1) form a conjugate profile, and a pair of internal gearing gear pair is formed through a conjugate design. According to the robot joint precision transmission gear structure provided by the invention, on the premise of ensuring the secure implementation of gear profile force transfer, a flexible small pressure angle design is carried out on the gear shape of the gear profile, so that the radial force component is reduced, the drive force component is improved, and the aim of precise, efficient and long-service transmission is achieved.
TL;DR: In this paper, a parametric cubic spline function for generating gear profile is proposed, which includes new gear design parameters such as pressure angle, number of teeth, module, and tooth tip circle modification.
Abstract: In this paper, a parametric cubic spline function for generating gear profile is proposed. The spline function includes new gear design parameters such as pressure angle, number of teeth, module, and tooth tip circle modification. The proposed geometry can improve corner filling condition. Finally, the simulation software DEFORM is used to simulate the cold forging process of the micro-gears with different profiles.
Patent•
03 Feb 2016
TL;DR: In this article, a rotational speed cam for a main pump of an aircraft engine is proposed. But the main pump is not connected with an engine throttle lever through the shaft and is linked with the throttle lever; the radius of base circle of the rotation speed cam varies with the change of the angle of throttle lever.
Abstract: The invention relates to the field of aircraft engines, particularly to a rotation speed cam for a main pump of an aircraft engine, and is suitable for manufacturing and repairing aircraft engine main pumps. The rotation speed cam for the main pump consists of a rotation speed cam and a shaft, wherein the rotation speed cam is connected with an engine throttle lever through the shaft and is linked with the throttle lever; the radius of base circle of the rotation speed cam varies with the change of the angle of the throttle lever. Through the rotation speed cam for the main pump, the radius of base circle and the allowable pressure angle are increased; the corresponding radius of base circle is continuously increased with increase of the allowable pressure angle; the rotation speed cam for the main pump solves the problem of spare parts, develops a novel design idea and achieves a good effect.
Patent•
03 Jun 2015
TL;DR: In this article, a special gear for sliding door and window is described, which consists of a circular gear body, and engaging teeth which are uniformly arranged at the peripheral edge of the gear body.
Abstract: The invention discloses a special gear for sliding door and window. The special gear comprises a circular gear body, and engaging teeth which are uniformly arranged at the peripheral edge of the circular gear body, and is characterized in that the tooth profile of the gear is an involute, the pressure angle is 25-35 degrees, the tip clearance coefficient is 0.001-0.2, the modification coefficient ranges from -0.5 to -0.2, the addendum coefficient is 0.4-0.7 and the tooth height is 2mm-5mm. According to the special gear, a traditional mechanical gear design manner is changed and a traditional gear computational formula is released to obtain an involute gear with the large pressure angle, large modification coefficient and ultra-short-gear involute; the gear strength can be improved without extra heat treatment and the gear can be effectively prevented from being broken. In actual application, when the two gears are engaged, the tolerance gap between the involute and the fitting part of the gears is small and a side clearance is basically not formed.
Patent•
12 Dec 2012
TL;DR: In this paper, a high-abrasion-resistance small-tooth-number driving chain wheel is presented, where the tooth number of the chain wheel was 15-16 and the pressure angle of the involute profile was 30-33 degrees.
Abstract: The invention discloses a high-abrasion-resistance small-tooth-number driving chain wheel The tooth number of the chain wheel is 15-16; the pressure angle of the involute profile of the driving chain wheel is 30-33 degrees; the involute of the driving chain wheel which is meshed with a tooth chain working chain plate is 052-126 millimeters in length; and the modulus of the involute profile of the driving chain wheel is 2021-1989 In the high-abrasion-resistance small-tooth-number driving chain wheel, a novel design is adopted for the tooth form of the small-tooth-number chain wheel, the chain wheel tooth form parameters are changed, and the tooth form meshing contact area of a chain wheel involute is increased, so that the transmission efficiency and abrasion resistance are improved; and moreover, the modulus and pressure angle of the chain wheel involute tooth form can be adjusted through an optical design, so that the requirement of high abrasion resistance under different working conditions of different host machines is met As proved by an experiment, the abrasion resistance of the high-abrasion-resistance small-tooth-number driving chain wheel is improved by over 5 times in comparison to an ordinary small-tooth-number driving chain wheel