Apparatus and method for the assessment of embodiment movement features by means of differentiation of the tooth profile deviation with respect to the gear wheel rotary angle.

摘要

PURPOSE: To enable motion characteristic of a gear to be evaluated accurately by using a value which is obtained by differentiating a gear shape error by a rotary angle of the gear. ;CONSTITUTION: A concept of instantaneous basic circles C₀ and C which signify a circle which is in contact with a tangent line at each position on a gear-shape curve of a gear and has a center 0 of the gear is introduced and the gear shape is described by using a rotary angle θ of the gear and a gear shape error A p which is a deviation from an involute curve of the gear shape curve. Then, an instantaneous basic circle radius R_b (θ) can be approximated by a sum of an ideal basic circle radius R_b0 and a differential value which is obtained by differentiating the gear shape error Δp with a rotary angle θ, the differential value is a basic circle radius error A R5, and motion characteristics of gear strongly depend on the basic circle radius error ΔR_b. Therefore, after the gear shape error Δp is acquired by relating it to the rotary angle, the gear shape error Δp is differentiated by the rotary angle θ, thus acquiring the basic circle radius error ΔR_b.;COPYRIGHT: (C)1993,JPO&Japio