I have noticed that most of the posts in this forum section are about motor drives for CNC Routers, but I wondered if any of the manufacturers of the CNC Routers have incorporated Linear Motor - Axis Drives instead of Ball Screws? I don't represent any CNC Router manufacturers, so I wondered if they have utilized this technology?
I'm a Distributor for Sodick a world leading manufacturer of EDM and Wire EDM machines. They use Linear Motor for all their machines. They also have a line of precision High Speed Milling machines utilizing the Linear Motor Drives. The Linear Motor drives in the Sodick High Speed Mills are extreamly accurate and do not wear or have backlash. To this point they are able to provide a 10 year positioning accuracy Guarantee.
Here is some information on Sodick's High Speed Milling Machines:
Linear Motor Axis Drives
Sodick?s high speed mills use linear motor-based axis drives. Linear motors have no moving parts (ball-screws, ball-nuts, rotary motor). Therefore, no component will thermally expand, and no-backlash in the drive system. Linear motors provide high acceleration (1.2G) and high speed feeds (1,440?/min.).
You can also get more information at this link: http://www.sodick.com/index.php?t=pr...roducts__id=22
Applied Machine Solutions, Inc.
Sodick Distributor for Georgia, Alabama, Tennessee, Mississippi, Arkansas and Louisiana.