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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
23 Oct 2013
TL;DR: In this paper, the authors proposed a design method of a honing grinding wheel which can suppress surface pressure change during honing machining, which is based on a geometrical relationship established in the case that the engagements of the grinding wheel on the right side tooth surface and the left side of the workpiece begin at the same time.
Abstract: The invention provides a design method of a honing grinding wheel which can suppress surface pressure change during honing machining. The design method of the honing grinding wheel comprises a step (S3) of obtaining a target axis right-angle mesh pressure angle of the horning grinding wheel according to a geometrical relationship established in the case that the engagements of the honing grinding wheel on the right side tooth surface and the left side tooth surface of the workpiece begin at the same time, steps (S4 to S8) of arbitrarily determining a tooth right angle modification coefficient of the honing grinding wheel, and obtaining the axis right angle mesh pressure angle of the honing grinding wheel after an initial reconditioning obtained in such a case as a design axis right angle mesh pressure angle, and steps (S9, S12) of determining elements before the initial reconditioning of the honing grinding wheel based on the determined arbitrary tooth right angle modification coefficient when the difference between the target axis right angle mesh pressure angle and the design axis right angle mesh pressure angle is below a prescribed value.
Patent
04 Mar 2015
TL;DR: In this paper, a worm and worm gear movement pair with a modification coefficient being more than 1 is designed in a pairing manner, wherein worm gear tooth thickness/worm tooth thickness is more than or equal to 2.
Abstract: The invention provides a designing method of a worm and a worm gear for C-EPS (column-electric power steering). The designing method is characterized in that (1) a worm and worm gear movement pair with a modification coefficient being more than 1 is designed in a pairing manner, wherein worm gear tooth thickness/worm tooth thickness is more than or equal to 2, the overall layout space of the worm and worm gear can be reduced, and the structure is more compact; (2) generally, the effective working torque transmitted by the worm and worm gear is larger when the pressure angle of the gear movement pair is smaller, and the transmission efficiency is higher, so that the pressure angle which is smaller than 20 degrees is adopted in order to improve the transmission efficiency of the C-EPS worm and worm gear movement pair; the worm gear is made of an injection molding nylon material, and the worm is made of an alloy steel material, so that the material advantages of the worm gear and worm can be adequately played, an equal-strength designing method is adopted for the worm and worm gear, the overall service life is prolonged, and the noise of the transmission pair is also lowered.
Patent
08 Apr 2009
TL;DR: In this article, a bearing is wound on pressure angles (alpha1, alpha2) that are inclined perpendicular to a running axis, and one of the pressure angles is adjusted in a differential manner in relation to a pre-determined pressure angle (alpha2) independent of intersection points (S1, S2) of rolling tangent (17, 18).
Abstract: The bearing (1) has rolling bodies (5, 6) designed as balls or ball caster and arranged in two roller series (7, 8). A track (9-12) is wound on pressure angles (alpha1, alpha2) that are inclined perpendicular to a running axis (2). One of the pressure angles (alpha2) is adjusted in a differential manner in relation to a pre-determined pressure angle (alpha2) independent of intersection points (S1, S2) of rolling tangent (17, 18) and directly dependent upon partial circular diameters (Tk1, Tk2) and diameters (dw1, dw2) of the bodies for achieving rotary speed identity of the rolling bodies.
01 Sep 2012
TL;DR: In this article, the effect of module number of gear design is considered and how the contact stress results vary with these parameters is studied, and the results of the two dimensional FEM analysis from ANSYS are presented.
Abstract: This report is to study the characteristics of involute gear system including bending stress and transmission errors of gears in mesh. Gearing is the most critical components in mechanical power transmission systems. Transmission error measurement has become a popular area of research on gears as it is related with a possible method for quality control. Transmission error is considered to be one of the main factors that contribute to noise and vibration in a gear set. Hence, to estimate the transmission error in a gear system, the characteristic of involute spur gears were analyzed by using the finite element method. Before proceed with simulation, the gears are drew by using CATIA P3 V5R12. Fives model of spur gear are design by into 3D and 2D models. The bending stress in the tooth root was analyzed by using 2-D FEM models. The simulation of 2-D FEM models was done by using ANSYS 14.0. In order to enable the investigation of contact problems with FEM, the stiffness relationship between the two contact areas is established by inserting a contact element placed in between two areas where contact occurred. Besides that, current analytical method of calculating gear bending stresses use Lewis equations, which were originally derived for bending stress of the contact between a pair of tooth. However for this project, we will vary the number of module of gear with fix pressure angle and number of teeth. Then, the result with different number of module will be related with the bending stress. The results of the two dimensional FEM analysis from ANSYS are presented. The bending stresses were compared with different number of gear module system. In the past, the bending stress sensitivity of a gear tooth has been calculated using photo elasticity or relatively coarse FEM meshes. However, with present computer developments we can make significant improvements for more accurate FEM simulations. In this report the effect of module number of gear design is considered and how the contact stress results vary with these parameters is studied. The gear design is optimized based on FEM analysis.
Patent
06 Jul 2017
TL;DR: In this article, the authors proposed a gear change mechanism for a bicycle that contributes to the size reduction of a component for the bicycle and has the same gear as the first gear.
Abstract: PROBLEM TO BE SOLVED: To provide a gear which contributes to the size reduction of a component for a bicycle, and a gear change mechanism for the bicycle having the same.SOLUTION: A gear change mechanism for a bicycle comprises a first gear which includes a plurality of first teeth which are different in a magnitude of a first pressure angle regulated by a first tooth face and a magnitude of a second pressure angle regulated by a second tooth face, and a second gear which includes a plurality of second teeth which are different in a magnitude of a third pressure angle regulated by a third tooth face and a magnitude of a fourth pressure angle regulated by a fourth tooth face, and is geared with the first gear.SELECTED DRAWING: Figure 3

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