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.

Variable pitch type limited slip differential and design method thereof

Abstract: The invention provides a variable pitch type limited slip differential. The variable pitch type limited slip differential is characterized in that a gear body of a planet gear extends to the exterior of a gear tooth frame to form a circle of friction ring; and the portion, corresponding to the friction ring, of the gear tooth frame is provided with a circle of friction boss. When the planet gear is pushed and pressed by means of radial force, the friction ring and the friction boss make contact with each other in an abutting manner, a planet gear force transmission point deviates, the limited slip function of the differential can be achieved, and a locking coefficient can be changed within a large range by changing the radius of the friction ring, the pressure angle of the planet gear and the radius of the planet gear.

Negative pressure control valve device

Abstract: PURPOSE:A hole opened to the surrounding air which is provided at intermediate portion of a negative pressure passage between a carbreator and a negative pressure angle advancement device of distributor is mechanically opened and closed in response to a displacement of operation system which is operatively connected to a speed change lever in order to prevent a decrease in output due to delay in advancement angle and an increase in fuel consumption when the engine is operated at maximum speed

Involute helicoid worm pressure angle special measuring

Abstract: The utility model discloses an involute helicoid worm pressure angle special measuring, including measuring tool reference block, trapezoidal helix angle gage block and two standard pressure angle gage blocks The measuring tool reference block is " worker " style of calligraphy, fit together with trapezoidal helix angle gage block, and four sides on the trapezoidal helical angle gage block are all perpendicular with measuring tool reference block " worker " style of calligraphy plane, and two inclined planes of trapezoidal helix angle gage block and two parallel contained angles equals the helix angle of worm, as the measuring basis face, the standard pressure angle gage block is equivalent to a tooth with spiral shell way engaged with basic rack, and its contained angle face is the twice of worm pressure angle, and just this standard pressure angle gage block is select corresponding standard pressure angle gage block to the worm of different pressure angles and is measured according to the big or small design of worm pressure angle, and standard pressure angle gage block and measuring tool reference block make up and use during the measurement, and the measurement is simple, swiftly

Stress Concentration factor Analysis of Helical Gear Drives with Asymmetric Teeth Profiles

Abstract: This study investigates the influence of asymmetric involute teeth profiles for helical gears on the bending stress. Theoretically, bending stress has been estimated in spur involute gears which have symmetric teeth profile by based on the Lewis, 1892 equation. Later, this equation is developed by, Abdullah, 2012. to determine the effect of an asymmetric tooth profile for the spur gear on the bending stress. And then these equations are applied with stress concentration factor once for symmetric and once other for asymmetric teeth profile. In this paper, the bending stresses for various types of helical gear with various types of asymmetric teeth profile are calculated numerically for defined the stress concentration factor. The numerical solution based on the finite element method technique which that done by using the software simulation SolidWorks 2016. The results of this study indicate that the helical gear drive with asymmetric teeth profile having 'loaded side pressure angle' of ( ) and 'unloaded side pressure angle' of ( ) is better than a helical gear with standard teeth profile having pressure angle of ( ) from the regarding of tooth bending strength. Also, notes that the great enhancement in the results of maximum tooth bending stress for modified involute of tooth profile compared with the standard teeth profile. In addition to, predict the equation of stress concentration factor which is a function of both unloaded side pressure angle and helix angle and then it used with Abdullah equation for to determine the nominal stresses in the root fillet.

Study on Nonlinear Dynamic Characteristics of 2K-H Planetary Gear System

Abstract: A 2K-H type planetary gear reducer with involute spur gear is adopted as the research object. Considering the time-varying meshing stiffness, the time-varying backlash of the gear meshing and the time varying pressure angle and other nonlinear factors, the lateral-torsional-swing coupled nonlinear dynamic model of the planetary gear transmission system is established. According to the equations of Lagrange, the dynamic differential equations are derived. By introducing the state variable, the second-order differential equation of the coupled system is reduced to the first-order differential equation. The fifth-order step-varying adaptive Runge-Kutta numerical integration method is used to solve the dynamic equation. Compared with the previous dynamic models, this nonlinear dynamic model for the planetary gear transmission system is more closely to the practical operating conditions of the transmission system, which has laid a foundation for further evaluating the dynamic characteristics of the planetary gear transmission system in the future