My question is on general retrofit of medium to small asian milling machines: Understanding that most machines not originally designed for CNC use leadscrews and seldom use any ballscrews, is there a reliable method in CNC software to make sure the machine approaches the cut from the proper side so that the lash in the leadscrews can be negated, or is it necessary to convert all axes of the machine to ballscrews or replacement zero-lash lead nuts? these type of nuts seem to be standard on some machines ( shoptask?) but either special design and order or user-built on most others. how does one get around this in the general-purpose low-budget CNC conversion ?
I have seen the frog cnc units - what is the present state of the art for low-budget three-axis controls suitable for use on a Homier or Harbor freight mini-mill? (need the setup with all components - this is the entire hardware and software set except the main control computer and monitor.) last I looked was about 9 months back - is there anything new in the conversion-kit market since then??
thanks  |