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.

Means for regulating pressure in a pressure chamber

Abstract: For regulating the pressure in a pressure chamber, in particular in a pneumatic brake apparatus for a web-type recording medium, an actual pressure is set in the pressure chamber dependent on an actual angle of rotation of a rotary valve. The actual angle of rotation of the rotary valve and the actual pressure in the pressure chamber are acquired. A target pressure and a target angle of rotation allocated to this target pressure are predetermined, and a pressure deviation between the actual pressure and the target pressure are determined, as is a deviation of the angle of rotation between the actual angle of rotation and the target angle of rotation. An adjusting unit sets the angle of rotation at the rotary valve, first dependent on the deviation of the angle of rotation and then dependent on the pressure deviation. Furthermore, a sensor for acquiring the angle of rotation is specified.

Profile modified gear

Abstract: PURPOSE:To reduce gear noise still more, by applying bias correction in which the amount of pressure angle correction in the direction of tooth width gradually changes, so that the engaging part of a pair of gears engaging each other can be lengthened along the advancing direction. CONSTITUTION:The amount of correction in a bias correction is expressed by the difference in the pressure angle correction amounts at both ends of an inspection tooth width or the difference between the pressure angle correction amount P1 at one end in the tooth width direction as shown in the figure and that P2 at the other end. Then, the target correction amount of the bias correction is set to a value in which chiefly the primary and secondary components, out of order components of engaging error obtained by developing the engaging error wave form into Fourier series, become small. In the gear to which this bias correction has been applied, consequently, the engaging part of a pair of gears engaging each other is lengthened along the advancing direction of engaging. In this profile modified gear, since the bias correction is applied as a correction element for a reference tooth surface 10, the engaging error of gear is reduced, and the gear noise can be still more reduced.

Wave motion gear apparatus has tooth root side which tooth profile curves has obliquity action angle which is smaller than standard pressure angle of basic rack tooth profile curve

Abstract: The tooth profile curves (C2,C3) of the tooth root side has an obliquity action angle (alpha 2,alpha 3) which is smaller than the standard pressure angle (alpha 1) of a basic rack tooth profile curve (C1). The tooth profile shape of the rigid internal gear and the flexible external tooth gearwheel are each based on the basic rack tooth profile curve.

Planar gear train

Abstract: A driving and a driven spur gear, lying in a common plane, are operatively coupled with each other through the intermediary of an idler gear in mesh therewith, the idler gear being radially shiftable against a resilient force in the common plane of rotation. The tangent to any tooth flank of both the driving and the driven gear at its point of contact with a tooth of the idler gear includes a pressure angle α with the common diameter of the meshing gears; the angle δ between the two common diameters should be so chosen that the two tangents are substantially perpendicular to each other, with δ - 2α = 90° for rotation in one direction and δ +2α =90° for rotation in the opposite direction.

Transmission Index of Lower-Mobility Parallel Mechanism: Case Study on 3-PRS Mechanism

Abstract: An extended definition of the transmission index based on the pressure angle was proposed. In order to enable evaluation of motion/force transmissibility and constrainability of parallel mechanism including lower-mobility/hybrid parallel mechanisms, pressure angle of a kinematic structure obtained by blocking all the actuated joints of the original mechanism was defined. In addition to this, an equivalent kinematic model of the original mechanism was introduced, in which the output link is supported by pure forces with the directions determined by the kinematic configuration of the mechanism. With these new ideas, a novel transmission index was proposed, and an illustrative example of 3-PRS mechanism was shown.Copyright © 2017 by ASME