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.

Structure of a pair of involute gears

Abstract: PROBLEM TO BE SOLVED: To provide structure of a pair of involute gears which maintains strength of the tooth root, improving the contact ratio and sufficiently coping with the change of center distance, in the case the tooth number of a small gear is extremely small. SOLUTION: In this structure of a pair of involute gears, the pressure angle of the tooth end of the small gear is made smaller than that of the tooth root, and the pressure angle of the tooth end of the large gear is made equal to the pressure angle of the tooth root of the small gear. Furthermore, the pressure angle of the tooth root of the large gear is made equal to the pressure angle of the tooth end of the small gear.

Process for milling worm wheels optimizing the contact pattern used in CNC milling machines comprises using an excessive worm wheel cutter having an outer diameter which is larger than in the nominal state

Abstract: Process for milling worm wheels optimizing the contact pattern comprises using an excessive worm wheel cutter having an outer diameter which is larger than in the nominal state and whose pressure angle is corrected in the form of a side modification after re-sharpening of the cutter.

Rack-and-pinion type slewing equipment of coal-excavating development machine

Abstract: The invention relates to a rack-and-pinion rotator for a coal cutting development machine, mainly comprising a revolving body, a revolving gear, a left revolving rack, a right revolving rack, an upper support ring, a lower support ring, a built-in oil cylinder, a gear bearing and an articulated frame, wherein, large-scale high-power workpieces are adopted in the aspect of a structure; the plane support rings adopt ultrahigh molecular weight polyethylene materials; the revolving gear and the revolving rack adopt large-scale design; the modulus is 32; the pressure angle is 28 DEG; the gyration half angle is 26 DEG; the gyration integrated angle is 52 DEG; a high-power hydraulic built-in oil cylinder is adopted for power transmission The rack-and-pinion rotator for the coal cutting development machine has the advantages of reasonable design, compact structure, large bearing capacity, and strong pressure-proof, shock-proof, shock-absorbing and impact resistant capacities; the impact resistance can rise two to three times compared with the prior art; the workpieces are difficult to damage; moreover, the rack-and-pinion rotator has long service life, is safe, stable and reliable, and is an extremely ideal rack-and-pinion rotator for the coal cutting development machine

Tooth trace correcting method of helical gear

Abstract: PURPOSE: To provide a tooth trace correcting method of a helical gear, capable of grinding two adjacent tooth surfaces in holding a tooth space between into symmetrical tooth form, and of grinding these adjacent tooth surfaces at the same time. CONSTITUTION: In this correcting method, it is provided with a helical gear 2 held so as to be rotated with an A shaft as the center, and a grinding wheel 1 whose turning shaft is accorded with a tooth trace direction of the helical gear 2 in relation to that of this helical gear, respectively. In addition, in a forming crowning grinding work which relatively traveling the grinding wheel 1 in both X-axis and Y-axis directions as rotating the helical gear 2 and grinding the tooth surface, a pressure angle compensating rotation for compensating an asymmetric tooth form error is imparting to the helical gear 2, and in order to compensate a circumferential position error attending on this operation, the helical gear 2 is traveled in the Z-axis direction being orthogonal with both the X and Y axes.

Stress concentrations at an oblique hole in a thick flat plate under an arbitrary in-plane biaxial loading

Abstract: The results of an extensive ‘frozen-stress’ photoelastic investigation of the stresses at isolated oblique holes in thick wide plates subjected to uniform uniaxial tension are used to provide stress concentration factors at holes resulting from any form of biaxial in-plane loading. The work covers plate thickness/hole diameter ratios from 1.3 to 3.0 and hole obliquity angles up to 60 degrees. Over these ranges the effects of changes in the plate thickness/hole diameter ratio are not of major importance but the effects of changes in the angle of obliquity are considerable.