| 摘要 |
1,201,753. Worm gearing. KEARNEY & TRECKER CORP. 21 Feb., 1969 [26 March, 1968], No. 9411/69. Heading F2Q. In a recirculating ball type worm gear the radial section of the worm 15 is such that the locus 58 of the ball centres is non-circular, preferably being, as shown, the section of a hyperboloid of revolution to allow simultaneous loading of multiple balls in multiple rows. The worm grooves 50, 51 ... 56 have a constant helix angle. |
