| 摘要 |
<p>1,190,210. Screw - and - nut mechanism. SCULLY-JONES CO. 28 June, 1967 [29 June, 1966], No. 29712/67. Heading F2Q. A ball screw-and-nut mechanism comprises a screw 32 on which are mounted nuts 24, 26 by means of sets of balls 34, 46 and the nuts are pre-loaded axially by manually adjustable screw means. Nut 24 has a flange 40 which is secured to a housing 22 by screws 42. A flange 58 on nut 26 is located in a recess 56 in flange 40 and its angular disposition may be adjusted by screws 60, 62, carried by the flange 40, engaging walls 74, 76 on a tongue 72 of the flange 58. Set screws 78, 80 lock screws 60, 62 in their adjusted positions. Ball return inserts 38, 50 are located in longitudinal slots 36, 48 in the nut members to provide a plurality of independent helical ball circuits. In a modification, nut members 86, 88 (Fig. 4) carry flange 100, 108 respectively, which engage opposite ends of a housing 90, the flange 100 being secured thereto by screws 104 and the flange 108 being adjustable with respect to the housing 90 by screws 130, 132. In a further modification, a flanged nut 150, Fig. 6, is secured to a housing 148 and a nut 152 is adjustable with respect to the housing by a screw 170 mounted in the housing wall and engaging a ledge 172 formed on the inner end of the nut 152.</p> |
