virtual leadscrews
I have just purchased an old scrap wessel pcb cnc router.The leadscrews in X and Y are plain 25mm round bar and the nuts seem to be some sort of preloaded spiral bearing.The system does work as I already have such a machine up and running.What I would like to know is does any slip occur? The machine I am running uses the original servos and heidenhain scales. As I want to increase the X axis travel on the "new" machine (it is a twin spindle job and I intend to change to a single spindle with greater travel) the optical scale is too short and I was thinking of changing to a servo with encoder, but do not know if any slip is likely to occur. I do know that conventional ballscrews would resolve the problem, but would be an expensive solution and funds are tight at present.If slip is unlikely to be a problem steppers would also be another solution.If anyone has any experience with this kind of leadscrew I would be very interested in any comments.Thanks,G
Common sense is not so common.