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.

Crack path prediction of gear tooth with different pressure angles -numerical study

Abstract: A finite element study was conducted to investigate the influence of the gear pressure angle associated with rim thickness on gear tooth crack initiation and propagation besides the fatigue life. Three values of pressure angles (15 o , 20 o , and 22 o ) are taken in account associated with three values of rim thickness. A finite element programs FRANC2D and ABAQUS were used to simulate gear tooth initiation and propagation. The analysis used principles of linear elastic mechanics. FRANC program had a unique feature to automated crack propagation using automated re-meshing scheme. The computed stress intensity factors used for determine crack propagation direction. With a simple Paris equation, fatigue life, has been calculated. The results show that the gear pressure angle associated with rim thickness has a significant effect on the crack initiation position and crack propagation path in addition of fatigue life.

Structure and method for using cam curve for achieving equivalent stiffness characteristic of independent suspension

Abstract: The invention discloses a structure and method for using a cam curve for achieving the equivalent stiffness characteristic of an independent suspension A damping shock absorber and a push rod of the suspension are integrated, the upper end of an integrated shock absorber-push rod assembly is connected with a vehicle frame through a rubber shock absorber, and the lower end of the integrated shock absorber-push rod assembly is connected with a cross arm of the suspension through a cam module; and the molded line of the cam module is designed, so that the sprung mass/unsprung mass relative to the displacement and the spring compression amount satisfies a specific relation, and the equivalent stiffness of a suspension system is a fixed value A reverse method is used for establishing function relationships between the cam profile curve and parameters such as the rotating angle of the cross arm, a pressure angle and the inclination angles of the shock absorbers, a matlab program is used for conducting iteration on the molded line of the cam module to obtain a solution, and a theoretical profile and an actual profile of the cam module are obtained Through reasonable design of the molded line of the cam curve, the equivalent stiffness nonlinear characteristic caused by design of a guide mechanism of the suspension is eliminated The structure and method can be applied to the guide mechanism of any independent suspension in principle

Control method of cam system for manufacturing nc-code of spur gear

Abstract: PURPOSE: A control method of a cam system for generation of NC(numerical control) code of spur gear is provided to reduce interval number and NC code length and therefore working time of the spur gear through optimization of interval length by maintaining error in all intervals into permissible error range using GSS(golden section search) method. CONSTITUTION: In a step(S1), tooth number, module, pressure angle, arbitrary permissible error are inputted by a console. In a step(S2), variable such as angle at pitch circle, basic circle, root circle radius and arbitrary point related to tooth configuration of the gear is produced. In a step(S3), interval variable is initialized with substitution of 1. In a step(S4), interval error between corresponding interval length and predetermined interval length is produced by using GSS method. In a step(S5), the step S4 is repeated if the produced error length is larger than permissible error, and, if not, corresponding interval length is stored with adding of 1 to interval variable. In a step(S6), the step S4 is repeated if interval length corresponding to interval variable added with 1 is larger than 1 micrometer, and if not, length of last interval is stored. In a step(S7), NC code is generated according to position of a point between intervals.

A precision machining method for single-head boss ridge type globoidal indexing cam profile surface

Abstract: The invention relates to a method for finishing machining the single-head convex arc divided cam profile, which is characterized in that: it corrects the knife track in general generated machine to machine the working profile of arc divided cam, to divide its profile surface into four sections as 1L, 2R, 2L, and 3R, to correct and analyze the knife track and supply the correct calculate formula The invention can improve the general generated method, to correct the working profile surface of arc divided cam, to avoid the mesh interference between the roller and the cam profile surface, to make the section with better mesh transmission property (smaller pressure angle) with main mesh transmission Therefore, it can improve the machining quality and correct the knife track

Imaging device with clamping structure

Abstract: The utility model relates to an imaging device with a clamping structure. The imaging device is suitable for a multifunctional integrated machine and solves the problem that an image display module jitters to cause poor imaging quality. The imaging device is characterized in that the moving direction of the image display module is constrained by means of a groove which is as same as a tooth pressure angle in inclined angle to avoid the jittering of the image display module, a lead channel is just designed and changed to realize the purpose of restraining the image display module, and the related cost of assemblies can be saved to a great extent.