Accurate modeling method for worm gear

Abstract

The invention discloses an accurate modeling method for a worm gear. The method includes calculating space positions of two parts and creating a circle of worm gear model at central positions respectively; creating a plurality of parallel reference planes with constant value intervals serving as standards and obtaining worm sections at different datum plane positions through plane substantiation functions respectively; performing array duplication on obtained worm sections according to the constant value intervals; creating a plurality of datum points at contour edges of the arrays; connecting datum points into tooth curves through sketch spline tools; fitting the plurality of the tooth curves into a curved surface by using curve blending tools; building worm gear grooves by curved surface materialization tools; and copying gear groove characteristics through array copy tools along a peripheral direction to obtain a complete worm gear simulation model. The modeling method is performed in a pro / E environment, three-dimensional modeling of various worm gears can be adapted, the method is simple and practical, and gear surface profiles can be really reflected.

Description

technical field [0001] The invention relates to a modeling method of a worm gear, in particular to an accurate modeling method for a worm gear, and the modeling method is carried out in a pro / E environment. Background technique [0002] Worm gear transmission is one of the most basic transmission methods used to transmit orthogonal axis motion and power in the mechanical field, and is widely used in various mechanical equipment such as mining, metallurgy, construction and transportation. With the rapid development of computer technology, the design and manufacture of worm gears are developing towards the direction of computer-aided design, manufacture, analysis and measurement. To carry out computer-aided design, an accurate three-dimensional geometric model of the worm gear is first required. At present, the common modeling method of the worm gear is mainly to create the tooth shape through the method of cross-section sweeping and cutting off the material. This method has g...

AI Technical Summary

Problems solved by technology

To carry out computer-aided design, an accurate three-dimensional geometric model of the worm gear is first required. At present, the common modeling method of the worm gear is mainly to create the tooth shape through the method of cross-section sweeping and cutting off the material. This method has great defects. The created worm gear tooth shape Interference-free meshing is not possible

Another method is to perform cumbersome mathematical calculations, and each modeling can only establish a mathematical model for a single specific type of gear. Each modeling of a different type of worm gear needs to be based on actual specific requirements. Carry out specific three-dimensional modeling, which requires the designer to have high professional knowledge in gear and software, the work is complicated and cumbersome, and it is not easy to master

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