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Double-circular arc harmonic wave gear hobbing cutter

A harmonic gear and gear hobbing cutter technology, which is applied in gear tooth manufacturing tools, gear tooth manufacturing devices, belts/chains/gears, etc., can solve problems such as harmonic gear transmission that cannot be used with elliptical wave generators

Inactive Publication Date: 2008-03-05
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On this basis, they developed their own double-arc tooth profiles, but for the reasons mentioned above, these tooth profiles cannot be used for harmonic gear drives with elliptical wave generators

Method used

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  • Double-circular arc harmonic wave gear hobbing cutter
  • Double-circular arc harmonic wave gear hobbing cutter
  • Double-circular arc harmonic wave gear hobbing cutter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] As shown in Figure 1, the main structural dimensions of the gear hob are the outer diameter D e , inner hole D, length L, pitch circle diameter d o , number of teeth Z k , alveolar depth H, shovel back volume K, etc. Its structure design is similar to general involute hobbing cutter. It can be a single-spindle or double-spindle structure, and the inner hole is divided into a structure with a keyway and a structure without a keyway. Among the figure, 1 is a cutter tooth, 2 is a cutter body, 3 is a pillow block, and 4 is an inner hole.

[0022] The main difference between the double-arc harmonic gear hobbing cutter and the general involute gear hobbing cutter is that its basic tooth profile is different.

[0023] As shown in Figure 2, those with an asterisk are the coefficients of the corresponding parameters divided by the modulus m, such as the radius coefficient of the convex tooth profile arc ρ a * = ...

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PUM

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Abstract

The present invention is one hobbing cutter for double arc harmonic gear. The slotting cutter has the following basic tooth profile parameters: addendum arc radius coefficient of 0.6-0.9, addendum coefficient h*a=0.7-1.2, dedendum coefficient h*f=0.7-1.2, dedendum gap coefficient C*a=0.2-0.3, tooth depth coefficient h*=1.4-2.4, convex tooth profile arc radius coefficient of 1.4-2.0, convex tooth profile center shift coefficient X*a=0-0.5, convex tooth profile center offset coefficient l*a=0.4-1.2, concave tooth profile arc radius coefficient of 1.4-2.0, concave tooth profile center shift coefficient X*f=1.4-2.0, concave tooth profile center offset coefficient l*f=0.4-1.2, technological angle of 6-12 deg, and dedendum arc radius coefficient of 0.1-0.4.

Description

technical field [0001] The invention relates to a gear hobbing cutter, in particular to a gear hobbing cutter used for machining double arc harmonic gear transmission gears. Background technique [0002] Harmonic transmission technology is a new type of transmission technology that appeared on the basis of elastic thin shell theory with the development of space science and aerospace technology in the middle of the 20th century. It has the advantages of high motion precision, large transmission ratio, light weight, small size, large carrying capacity, and can work normally in confined spaces and medium radiation conditions. It has been successfully applied in space technology, instrumentation, robots, printing, etc. Machinery and medical equipment and other fields. [0003] The main criteria for the working ability of harmonic gear transmission can be listed as the following aspects: the fatigue strength of the flex spline, the wear of the gear teeth, the slippage of the gea...

Claims

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Application Information

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IPC IPC(8): B23F21/16
Inventor 辛洪兵
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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