LINEAR DRIVE FOR A MACHINE TOOL AND METHOD FOR MOVING A TOOL CARRIAGE

摘要

The invention relates to a linear drive for a machine tool having a housing (1), having a carriage (2), which is mounted so it is axially movable in the housing (1) via two bearings (6, 7), and has a central axis (2.3) and a length (11), and having at least one first motor (3), having a first motor element (4) and a second motor element (5), wherein said first motor element is disposed on said carriage (2) and said second motor element (5) is disposed on said housing (1), wherein said first motor element (4) is implemented on said carriage (2) as a primary part and said second motor element (5) is implemented on said housing (1) as a secondary part. Furthermore, the invention relates to a method for moving a carriage (2) for a lathe tool of a highly-dynamic machine tool employing a crossed roller bearing (6, 7) for mounting the carriage (2), wherein all roller bodies (6.3) of said crossed roller bearing (6, 7) are always operationally linked to a carriage-side bearing surface (7.4), and said carriage (2) is driven at an oscillation frequency of at least 50 Hz, in particular between 60 Hz and 200 Hz.