Method for calculating chamfering of tooth tip of spiral bevel gear based on discretization of curved surface

Abstract

The invention relates to a method for calculating the chamfering of the tooth tip of a spiral bevel gear, in particular to a method for calculating the chamfering of the tooth tip of the spiral bevelgear based on the discretization of a curved surface. The chamfering calculation method comprises the steps of: firstly creating a gear solid model according to the mathematical model of the tooth surface, and then creating a chamfering feature expression on the gear solid model, extracting the coordinates of the discrete points of the upper and lower edge lines of the chamfering tooth top, and obtaining the chamfering ball-end milling cutter path by numerical algorithm; according to the relationship between the axial direction of the ball end milling cutter and the contact position of the surface of the ball end milling cutter, installing the unchamfered gear on the four-axis machine tool, and completing the axial and circumferential tool alignment of the gear through the edge finder, andcompleting the chamfering of the tooth tip according to the ball-end milling cutter path. The chamfering calculation method can make the chamfering of tooth tip be finished by a four-axis machine, and solve the problems of low production efficiency and big machining error in manual chamfering, and meet the needs of production and use of enterprises.

Description

technical field [0001] The invention relates to a calculation and processing method for the tooth top chamfer of a spiral bevel gear, in particular to a calculation method for the tooth top chamfer of a spiral bevel gear based on discretization of a curved surface. Background technique [0002] Spiral bevel gear is a transmission component used to transmit the motion between intersecting shafts or intersecting shafts. It has the advantages of large coincidence, stable transmission, and strong bearing capacity. After the tooth surface of the spiral bevel gear is processed, the tooth surface and the top of the tooth will form a sharp angle. Under the influence of gear manufacturing errors and installation errors, noise, impact, and rapid fatigue damage on the tooth surface will occur during gear meshing transmission. Therefore, it is necessary to The tooth top chamfering is performed to remove the tooth tip angle. At present, the chamfering of the tooth top of the spiral beve...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a method for processing spiral bevel gear tooth tip chamfering with a four-axis CNC machine tool based on surface discretization to solve the problems of low production efficiency and large processing errors in manual chamfering

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