Screw assembly and method for component stacking tolerance control

摘要

A screw assembly for maintaining a substantially constant gap between adjacent components includes a first screw including: an exterior surface including a first threaded surface; and an inner wall defining a bore, the bore being coaxial with a longitudinal axis of the first screw, the inner wall including a second threaded surface, wherein one of the first threaded surface or the second threaded surface is arranged with a right-hand thread, and the other one of the first threaded surface or the second threaded surface is arranged with a left-hand thread.

主权项

1. A phased array comprising at least three adjacent plates each comprising at least one support structure for a radiating element of the antenna and two opposing sides facing respective adjacent plates of the antenna, wherein the opposing sides of each of the plates are different from one another, and a screw assembly for maintaining a substantially constant gap between the support structures of the at least three adjacent plates, the screw assembly comprising:
a first screw comprising:
an exterior surface comprising a first threaded surface; andan inner wall defining a bore, the bore being coaxial with a longitudinal axis of the first screw, the inner wall comprising a second threaded surface,wherein one of the first threaded surface or the second threaded surface is arranged with a right-hand thread, and the other one of the first threaded surface or the second threaded surface is arranged with a left-hand thread; a second screw configured to engage the second threaded surface of the first screw to maintain a substantially constant gap between the respective support structures of the first and second plates; a third screw comprising an exterior surface comprising a third threaded surface arranged with one of a right-hand thread or a left-hand thread, and an inner wall defining a bore coaxial with a longitudinal axis of the third screw and comprising a fourth threaded surface with the other one of a right-hand thread or a left hand thread; a fourth screw configured to engage the fourth threaded surface of the third screw to maintain the same substantially constant gap between the respective support structures of the second and third plates; wherein the second plate has a first bore configured to receive the second screw and a second bore having a different profile than the first bore configured to receive the third screw; and wherein a gap between the respective sides of the first and second plates is different from a gap between the respective sides of the second and third plates.