STUDY OF THE INFLUENCE OF TEETH CORRECTION OF METAL-POLYMER HELICAL SPUR GEARS ON BEARING CAPACITY AND DURABILITY: PART. 1. BEARING CAPACITY
DOI:
https://doi.org/10.18372/0370-2197.3(96).16831Keywords:
dry friction, metal-polymer helical spur gears, polyamide PA6 and carbon composite PA6 30CF, height correction of engagement, maximum contact pressures in engagementAbstract
Using the author's method of calculating metal and metal-polymer gears, a study of the effect of height correction of engagement of helical spur gears on contact pressures and durability was carried out. Steel 45 was selected for the pinion, and unfilled polyamide PA6 or its composite PA6+30CF, filled with short carbon fibers, were selected for the gear. At different helix angles and tooth shift coefficients, the maximum contact pressures in engagement were evaluated. Quantitative and qualitative regularities of the influence of both factors on contact pressures were established, taking into account the conditions of teeth engagement (parity). The correction leads to a decrease in the contact pressures by a different amount depending on the point of contact of the teeth in the engagement. It was established that in a transmission with a gear made of PA6+30CF, the pressures will be 1.29 times higher than with PA6 and will not depend on the value of the shift coefficients.
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