ひずみ円柱創成装置の解析および実験
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概要
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In recent years, the noncircular cylinder becomes made practical use of as the workpiece of a noncircular gear, the shaft of power transmission, the output shaft of a linear motion actuator without rotation and the positive cam for generating a reciprocating motion. In this paper, two devices are newly developed for generating noncircular cylinders by means of the linear edged tool to be turning at high speed. The one is the device for generating the elliptic cylinder to which is applied such a kinematic principle that the straight line perpendicularly fixed on the coupler link of the revolving block slider crank mechanism envelops the ellipse. The other is the device for generating the polygonal cylinder to which is applied such a kinematic principle that the central line of the coupler slider of the reciprocating block double-slider crank mechanism turned round a point envelops the polygonal profile. The practical constructions of these device for cutting noncircular cylinders with acceptable accuracy are presented. The characteristics of the displacement and the velocity of the point of generation and those of influence coefficients are clarified. The condition for the driving gear of the elliptic cylinder generating device to make a continuous revolution, the maximum deviation of the angular displacement due to errors of kinematic constants and the condition for the polygonal profile to have cusps are formulated. As examples, elliptic cylinders whose lengths, major diameters and eccentricities are 140mm, 48mm and 0.5 respectively and polygonal cylinders having two and three lobes whose lengths, diameters of circumscribed circles and ratios of distortion are 275mm, 48mm and 0.0833 respectively have been cut by using each experimental device. The accuracy analyses by using the profile measuring device also newly developed in this paper have revealed that the maximum normal errors of those noncircular cylinders are about +- 0.02mm over full length.
- 山形大学の論文
- 1983-01-20