| 摘要 |
1,195,643. Toothed gearing. A. STOECK. ICHT. 20 May, 1968 [6 June, 1967], No. 23861/68. Heading F2Q. In a gear having herringbone teeth, the width of one toothing portion 5 is approximately 40% that of the other 3, the number of teeth in toothing portion 5 is equal to that in the other 3, the broader toothing portion 3 has a helix angle of less than 45% and the smaller toothing portion 5 has a helix angle of greater than 45%, the tangent of the greater helix angle is approximately equal to three times the tangent of the smaller helix angle and the height of the toothing 5 having the greater helix angle is continuously reduced from a height h z , equal to substantially 2À25 times the normal modulus, over a central one third width portion to h z /2 at the tooth ends. Such gears are used in a three element planetary gear. |
