TY - JOUR
AU - Banks, L B
AB - Stick-Slip Phenomena in a Lens Centring Device. By L. B. BANKS, A.M.I.Mech.E., Research Department, London, Midland and Scottish Railway Company, Derby [MS. jirst recezved 24 January I 946 and in final form 26 March 19461 to follow by spring, or gravitational force. It has apparently been An interesting but troublesome phenomenon has been encountered experienced in the worm drive of the elevating gear of gun turrets in connexion with a device for centring a lens on an optical bench. and has been analysed at some length in an article by S. J. Mikina in The set-up is shown in the figure, and the difficulty that arose was Machine Design for March 1945. that when the adjusting nut was turned in the direction to release the pressure in the spring a shuddering or ‘stick-slip’ action was felt and a severe oscillation of the lens mount was set up, such as to make accurate adjustment impossible. When the nut was turned downward, so as to tighten the spring, the action was as smooth as could be wished. An analysis of the factors involved showed that the phenomenon originated in the friction of the nut and the angular accelerations of the nut 
TI - Stick-Slip Phenomena in a Lens Centring Device
JO - Journal of Scientific Instruments
DO - 10.1088/0950-7671/23/7/410
DA - 1946-07-01
UR - https://www.deepdyve.com/lp/iop-publishing/stick-slip-phenomena-in-a-lens-centring-device-rLehMq3vaj
SP - 160
VL - 23
IS - 7
DP - DeepDyve
ER -