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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01 Jan 2003
TL;DR: In this paper, the tooth profile error of spur gears that have been finished by roll forming has been investigated and a forced displacement method has been proposed to reduce both concave and pressure angle errors.
Abstract: This paper deals with the tooth profile error of spur gears that have been finished by roll forming. First, we present experimental data that confirms that the tooth profile error is a synthesis of a concave error and a pressure angle error. Since various types of tooth profile errors appear in the experiments, evaluation parameters are introduced for rolling gears so that profile quality may be objectively evaluated. Using these evaluation parameters, the relationship among the tooth profile error, the addendum modification factor (A. M. factor), and the tool loading force are verified. The character of concave error, pressure angle error and tool loading force of finish roll forming by using a forced displacement method are verified. This study makes clear that the tool loading force of finish roll forming is a very important factor that affects involute tooth profile error. The results of the experiment and analysis show that the proposed method reduces both concave and pressure angle errors.Copyright © 2003 by ASME
4 citations
Patent•
02 May 2007
TL;DR: In this paper, the authors proposed a triangle spline connection for the power transmission of a rolling mill and the universal-joint-pin type universal coupling in the rolling machinery.
Abstract: The utility model relates to a spline connection device of telescopic universal-joint-pin type universal coupling, which is used to the power transmitting of rolling mill and the universal-joint-pin type universal coupling in the rolling machinery. A spline 1 connects with a spline 2, moreover, the tooth profile of the spline 1 and 2 are triangles, and the pressure angle Alpha is 30 degrees plus or minus 1 degree. The utility model has the advantages as the following: the device is novel structure; the triangle spline is advanced in that the structure is simple to be easy machining, furthermore, the device can be high precision machining, the machining accuracy can be control, and the precision of the automatic centring is high, etc. So the device is particularly suitable for the rolling machinery under the heavy load and heavy impact.
4 citations
4 citations
Patent•
07 Jul 1999
TL;DR: In this paper, the authors propose a utility model for a harmonic tooth difference retarding mechanism, which is composed of a rotating arm bearing, a flexible gear wheel, a sliding tooth and a sheave, an annular wheel, etc.
Abstract: The utility model relates to a harmonic tooth difference retarding mechanism, composed of a rotating arm bearing, a flexible gear wheel which is composed of a sliding tooth and a sheave, an annular wheel, a shell body, etc. The rotating arm bearing makes a harmonic motion formed between the flexible gear wheel and internal teeth, and a sheave is driven to do the differential tooth rotation of the definite proportion and orientation. The tooth form of the sliding tooth adopts a triangular tooth whose profile angle is equal to a pressure angle alpha. When a module is smaller, the range of a transmission ratio is large and can achieve above 1000. the inner tooth form of the pressure angle adopts slotting processing, and the process precision is high. The inner tooth form can be produced on a large scale and in a standardization mode, and the meshing of the teeth is surface contact. The carrying capacity is strong, and the utility model is inserted in a mounting structure in a coaxial mode and positioned through a key groove. The utility model can be used as conventional mechanical speed change and dividing mechanisms and also be arranged in devices.
4 citations