Calculation method of grinding force on spherical base surface of tapered roller

Abstract

The invention discloses a calculation method of grinding force of a spherical base surface of a tapered roller. According to the calculation method, the tapered roller is set to be in rigid contact with two guide wheel discs without sliding at a stable autorotation speed, the rotation speed of an isolating disc is equal to one half of the rotation speed difference between the two guide wheel discs, and the autorotation linear speed of the tapered roller is equal to the difference between the linear speed of the right guide wheel disc and the linear speed of the isolating disc; according to themachining principle of the spherical base surface of the tapered roller, when the spherical base surface of the tapered roller is ground, grinding force is divided into tangential grinding force andnormal grinding force; a force balance equation during grinding of the spherical base surface of the tapered roller is derived; and a grinding contact arc length of the spherical base surface of the tapered roller is calculated, the maximum undeformed cutting thickness is calculated, finally, the grinding force on the spherical base surface of the tapered roller is calculated. The method fully considers the grinding movement track and the forming contact arc length of the tapered roller, is suitable for analyzing the grinding process of the spherical base surface of the tapered roller, promotes the development of a grinding process parameter optimization technology, and improves the grinding machining precision of the tapered roller.

Description

technical field [0001] The invention relates to a method for calculating the grinding force of a tapered roller ball base surface. Background technique [0002] Tapered roller bearings have the ability to withstand high radial loads and axial loads at the same time, the rollers can achieve pure rolling, and the friction coefficient is low; these superior properties make tapered roller bearings widely used in machine tools, automobiles, metallurgy , aviation and other industries. When the tapered roller bearing is working, the contact condition between the ball base surface of the large end of the tapered roller and the tapered surface of the inner ring rib has an important influence on the lubrication conditions, contact stress, friction and wear, service life, etc., and the tapered roller must be strictly controlled. The machining accuracy of the sub-ball base surface. Tapered roller ball base surface grinding is a continuous forming grinding method, which is quite differ...

AI Technical Summary

Problems solved by technology

[0003] When grinding the spherical base surface of tapered rollers, due to the extreme complexity of the motion of the tapered rollers, the particularity of the forming grinding principle, and the lack of understanding of the grinding principle of the spherical base surface, it has not been possible to effectively establish a tapered roller surface. The calculation method of the grinding force of the spherical base surface affects the machining accuracy of the spherical base surface of the tapered roller

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