Full-working-procedure-method arc tooth bevel gear tooth blank correction method

Abstract

The invention discloses a full-working-procedure-method arc tooth bevel gear tooth blank correction method. The full-working-procedure-method arc tooth bevel gear tooth blank correction method comprises the steps that correction is performed on the large wheel tooth blank taper till a large wheel concave surface pitch cone middle point spiral angle and a large wheel convex surface pitch cone middle point spiral angle are both equal to a large wheel design middle point spiral angle; the correction is performed on the small wheel tooth blank taper till a small wheel concave surface pitch cone middle point spiral angle and a small wheel convex surface pitch cone middle point spiral angle are both equal to a small wheel design middle point spiral angle; and then the correction is performed ontooth blank geometric parameters. By means of the full-working-procedure-method arc tooth bevel gear tooth blank correction method, the problem that the meshing performance of an arc tooth bevel gearpair is adversely affected due to the concave surface spiral angle and the convex surface spiral angle at the pitch cone middle point cannot be precisely equaled in an existing tooth blank correctionmethod is solved; and a full-working-procedure-method machining principle is utilized, the concave surface spiral angle and the convex surface spiral angle at the pitch cone middle point of tooth blanks after correction can be precisely equaled and are both equal to the design middle point spiral angle, and the meshing performance of the full-working-procedure-method arc tooth bevel gear pair is improved.

Description

technical field [0001] The invention belongs to the technical field of spiral bevel gears, and in particular relates to a method for correcting a tooth blank of a spiral bevel gear by a full-process method. Background technique [0002] The whole process method is an advanced processing method for spiral bevel gears, that is, both the large wheel and the small wheel of the gear pair are processed by the double-sided method, and only one cutter head is used to complete the cutting of the concave surface and the convex surface at the same time, which can improve production efficiency and product quality. quality. [0003] The tooth blank design is the first link in the design and manufacture of the spiral bevel gear pair. Proper meshing of the gear pair requires that the pitch cone midpoint of the gear pair have both concave and convex helix angles equal to the design midpoint helix angle. However, when the double-sided method is used for machining, since the cutter head com...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a tooth blank correction method for spiral bevel gears with the whole process method, which solves the problem that the modified tooth blank has a concave surface at the midpoint of the pitch cone because the existing tooth blank correction method does not use the processing principle of the whole process method. The helix angles of the convex and convex surfaces cannot be exactly equal, causing problems that adversely affect the meshing performance of the spiral bevel gear pair

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