Centering, Clamping Threaded Nut
Original Publication Date: 1988-Oct-01
Included in the Prior Art Database: 2005-Feb-15
A method to obtain precision centering of mechanical devices onto rolled and imprecision threaded shafts is described and shown in the figure. Often it is desired to fasten onto a threaded shaft, as shown in the figure, while ensuring that the fastener is "centered" on the existing threads. The form of the threads is seldom known or controlled precisely, i.e., the commercially-available threads are often rolled or cut with imprecise dies. Therefore, one is usually forced to custom build the threaded shaft with centering features, thus making the assembly considerably more expensive and difficult. The figure shows a nut-like fastener which closes onto the existing threads thus ensuring the centering of the nut onto the existing threads. Simultaneously, the nut locks onto the threaded shaft.