conical spiral

This paper considers the characteristics of involutes of tilt-oriented curves and explores further the involutes of two kinds of tilt-oriented curves-the cylindrical spiral and the conical spiral according to the theory of the space curves in differential geometry.

利用《微分几何》的空间曲线理论,研究了定倾曲线的渐伸线特征,进一步探讨了两种定倾曲线——圆柱螺旋线、圆锥螺旋线的渐伸线。

Aim: To study the diagnosis and treatment of ependymoma in conus medullaris and cauda equins.

目的:探讨圆锥马尾部室管膜瘤的诊断及手术治疗特点。

Objective To explore the clinical features and surgical findings of cauda equina and conus medullaris tumors.

①目的　探讨马尾圆锥肿瘤的临床及手术特点。

A way of calculating the intersecting line of cylinder and cone with the aid of supplementary plane;

借助特定辅助平面求圆柱圆锥相贯线的方法

Diagraming the characteristic points on the intersection lines between a sphere and a cone by means of the method of anxiliary sphere;

用辅助球面法求圆球和圆锥相贯线上特殊点

Solution of obliquely intersection-line of cylinder and circular cone;

圆柱与圆锥偏斜交相贯线求法的研究

The Spreading Picture Drawing of the Cylinder and Circular Cone Intersected in the Axial;

相交圆柱与圆锥表面展开图的计算机绘制

The spherical method and auxiliary plane method are usually apply in making up the intersection line, while cylinder and circular cone intersect each other diagonally.

求作圆柱面与圆锥面轴线斜交时的相贯线 ,通常用的作图方法是球面法或辅助平面法。

Discussion on machining technology for spherical fiducial surface of tapered roller;

圆锥滚子球基面加工工艺的探讨

Study of generatrix shape of tapered roller processed with centerless grinding;

圆锥滚子无心磨削母线形状的探讨

Improvement of regulation wheel guiding surface during tapered rollers outer surface grinding;

圆锥滚子外径表面磨削时导轮制导面的改进