There is a solution to avoid whip on long lead screws. Leave the screw stationary. Mount a belt drive nut to the carriage. Long Bobcad tables used the method.
"The Rotating Nut ball screw line can increase traverse speeds up to 200 m/min with efficiency over 90%. The RN series consists of standard diameter and standard lead screws around which a flange-type precision housing has been designed.
The housing enables a timing belt to drive the nut and contains the preloaded rotating ball nut assembly. The bearings in the housing are grease packed and sealed for life, so no additional lubrication is needed.
Available in ISO precision classes 3 and 5 in both Medium Duty (single track), or High Duty(twin track) configurations.
Thomson Industries, Port Washington, NY, " |