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A contact performance, cylindrical gear technology, applied in the direction of belts/chains/gears, components with teeth, hoisting devices, etc., can solve problems such as wear, abrasion and gluing, tooth surface pitting, etc., to achieve high contact and excellent The effect of lubricating properties
Pending Publication Date: 2022-07-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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However, involute gears also have some disadvantages, such as the large sliding coefficient of the tooth profile, which is easy to cause wear and heat, affecting the transmission stability, efficiency and service life; the relative curvature radius of the meshing tooth profile is small, and the contact load capacity is limited
These shortcomings lead to the main failure modes of involute gears under the condition of satisfying the bending fatigue strength as tooth surface pitting, wear and gluing
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[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0020] The purpose of the present invention is to provide a high contact performance spur gear and a design method thereof, so as to obtain higher contact, bending, wear, glue bearing capacity, and better lubricating performance.
[0021] In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the acco...
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Abstract
When the high-contact-performance cylindrical gear serving as a driving gear and the high-contact-performance cylindrical gear serving as a driven gear are in meshing transmission, the relative curvature kr meets the condition that kr = k1-k2 = ar2 + br + c, r is the distance from a meshing point C to a node P, k1, k2, k3, k4, k5, k6, k7, k8, k7, k8, k8, k8, k8, k8, k8, k8, k8, k8, k8, k8, k8, k8, k8, k1, k2 are respectively curvatures of the tooth profile sigma 1 of the driving gear and the tooth profile sigma 2 of the driven gear at any meshing point C, and a, b and c are coefficients of a quadratic polynomial. Compared with the prior art, the cylindrical gear with the high contact performance can obtain higher contact, bending, abrasion and gluing bearing capacity and better lubricating performance.
Description
technical field [0001] The invention relates to the technical field of gears, in particular to a cylindrical gear with high contact performance. Background technique [0002] Gears are important mechanical basic parts. Involute gears are widely used in aerospace, rail transit, construction machinery and precision instruments due to their advantages of constant transmission ratio, high coincidence, separable transmission, and convenient processing. However, involute gears also have some disadvantages, such as the large sliding coefficient of the tooth profile, which is easy to cause wear and heat, which affects the transmission stability, efficiency and service life; the relative curvature radius of the meshing tooth profile is small, and the contact bearing capacity is limited. . These shortcomings lead to the main failure modes of involute gears under the condition of satisfying bending fatigue strength are pitting corrosion, wear and gluing of tooth surface. SUMMARY OF ...
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