歯車のかみあい状態の可視化に関する研究 : 円筒ウォーム歯車の場合

概要

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A computerized method of visualizing contact and meshing of gears using contour lines is proposed. The tooth surfaces of driving and driven gears are calculated as series of two-dimensional tooth profiles on each transverse/axial plane using the element removal method that simulates the metal removal process in gear finishing, and are transformed to 3-D data in a lattice structure to draw a contour-line diagram. The contour-line diagram of contact clearance is obtained by comparing a pair of tooth surfaces, and that of meshing clearance is obtained by comparing the tooth surface conjugate to the driving gear with that of the driven gear. The diagrams of the contact and meshing clearances are used to estimate the contact stress and to evaluate the transmission error of the gears, respectively. The proposed method was applied to cylindrical worm gears with a large lead angle, and it was found that the method is very useful in the design of worm gears.
1996-06-25