Spiral arc bevel gear mechanism without relative sliding

Abstract

The invention relates to a spiral arc bevel gear mechanism without relative sliding. The spiral arc bevel gear mechanism comprises a pair of transmission pairs composed of a small wheel and a large wheel. The axis of the small wheel and the axis of the large wheel are in orthogonality. Spiral arc teeth are evenly distributed on the outer surface of a small wheel cone. Spiral arc grooves are evenly formed in the outer surface of a large wheel cone. The center lines of the spiral arc grooves and the center lines of the spiral arc teeth are conical spiral lines, and the spiral arc teeth and the spiral arc grooves are matched. When the small wheel and the large wheel are installed, one pair of spiral arc tooth and spiral arc groove is meshed, a driver drives an input shaft, the small wheel and the large wheel to rotate, and transmission between orhtogonal shafts is achieved. The shape of the spiral arc teeth and the shape of the spiral arc grooves are determined through the transmission ratio and other parameters. During transmission of a spiral arc bevel gear, relative sliding of a tooth surface is avoided, and therefore tooth surface gluing, abrasion, plastic deformation and other failure forms are avoided. The spiral arc bevel gear mechanism has the advantages that the single-level transmission ratio is large, and the contact ratio and the bearing capability are high and is suitable for being popularized and applied to the field of tiny and micro machines and conventional machines.

Description

technical field [0001] The invention relates to a spiral circular arc bevel gear mechanism without relative sliding, in particular to a spiral circular arc bevel gear mechanism without relative sliding for plane orthogonal shaft transmission based on the curve meshing theory. Background technique [0002] As the basic transmission element in mechanical transmission, gears realize the function of motion or power transmission. Gears are widely used in industry, agriculture, medicine, national defense, aerospace and other fields. The gear industry has become the largest industry in the mechanical infrastructure of most countries. The development of modern industrial equipment has further increased the requirements for the quality and performance of gear transmission components. The design theory and manufacturing technology of the new high-performance gear transmission mechanism have promoted the continuous improvement and innovation of the gear meshing theory, and there have ...

AI Technical Summary

Problems solved by technology

However, the meshing principle of the involute bevel gear mechanism follows the meshing theory of curved surfaces. From the design theory, there must be relative sliding between the tooth surfaces, so the common problems of gear transmission such as tooth surface wear, tooth surface gluing, and tooth surface plastic deformation cannot be avoided. Failure mode, which affects the service life and reliability of the gear pair

For example, the Chinese patent number is 201310049845.5, which discloses a "bevel gear meshing pair based on conjugate curves", including bevel gear I and bevel gear II with mutual point meshing and tooth profile curves that are all circular arcs. The bevel gear has high transmission efficiency; The tooth surface is easy to process and manufacture, the transmission error is small, and the service life is long; but the bevel gear also has the tooth surface moving along the conjugate curve when the bevel gear I and the bevel gear II mesh, the bevel gear tooth surface slides relatively, and the tooth surface has Failure modes such as gluing, abrasion and plastic deformation

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