Method for processing spherical worm gear on universal milling machine

Abstract

The invention provides a method for processing a spherical worm gear on a universal milling machine. The method comprises the following steps: setting a pressure angle of a metric module gear at 20 degrees according to the national standard specification; clamping a workpiece, namely worm gear to be processed on an index head of a workbench of the universal milling machine, and dividing a cross central line and a top width line after aligning; rotating the workbench of the universal milling machine to a helix angle beta according to the helix direction of a worm and the size of a helix angle of the worm, and accurately engaging the workpiece, namely worm gear to be processed and the worm with the same helix direction of engaging teeth thereof in the engaging of the workpiece, namely worm gear to be processed and the worm; rotating the index head of the workbench of the universal milling machine to an angle of 20 degrees at left or right so that tooth surfaces of an M surface and an N surface of the workpiece, namely worm gear to be processed are vertical to the surface of the workbench, and processing the tooth surface of the worm gear; and grinding the worm gear with the matched worm. The method has the advantages that the method can process the spherical worm gear on the universal milling machine, has low cost and short working period, reduces tooling, and is suitable for processing the single spherical worm gear under the special condition.

Description

Technical field [0001] The invention relates to a process for processing a spherical worm wheel on a universal milling machine. Background technique [0002] According to the shape of the worm indexing surface, the worm drive can be divided into three categories: cylindrical worm drive, toroidal worm drive and cone worm drive. Straight profile toroidal worm drive, commonly known as spherical worm drive, is one of the toroidal worm drives. [0003] In the worm gear drive, due to the different materials of the worm wheel and the worm, the worm wheel is usually made of copper, which is a vulnerable part; and the worm is made of carbon steel, and the surface is heat-treated, so that it has high hardness and is not easy to damage. Compared with the spherical worm drive, the cylindrical worm drive is basically a single-tooth force state, while the spherical worm drive has five tooth surfaces meshing at the same time, and the force state is much better than that of the cylindrical worm ...

AI Technical Summary

Problems solved by technology

[0004] Although spherical worm drives have many advantages over cylindrical worm drives, the machining of spherical worm gears is much more difficult than ordinary worm gears and needs to be done on special machine tools

As a ship repair yard, the maintenance of spherical worm gears is rarely encountered, so it is not realistic to purchase special machine tools

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