# US 2013/0154399 A1 · Linear drive for a machine tool and method for moving a tool carriage

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- Number: US 2013/0154399 A1
- Document ID: US20130154399A1
- Status: Published application
- Kind: A1
- Application number: 13/771,754
- Filed: 2013-02-20
- Published: 2013-06-20
- Earliest claimed: 2008-03-19
- Assignees: Schneider GmbH & Co. KG
- Inventors: GUNTER SCHNEIDER; HELWIG BUCHENAUER; ULF BORNER; KLAUS KRAMER
- Web page: https://patentgrep.com/patent/US20130154399A1

## CPC

- H02K 7/08: Structural association with bearings
- B23Q 1/40: using ball, roller or wheel arrangements
- B23Q 1/60: two sliding pairs only {, the sliding pairs being the first two elements of the mechanism}
- B23Q 5/027: reciprocating members
- B23Q 5/28: Electric drives
- F16C 29/04: Ball or roller bearings
- H02K 33/18: with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
- F16C 2322/39: General buildup of machine tools, e.g. spindles, slides, actuators
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- B23Q: DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING (tools of the kind used in lathes or boring machines B23B27/00); MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS

## Abstract

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

## Claims

### Claim 1

A method for moving a carriage for a lathe tool of a highly-dynamic machine tool comprising the steps of:
employing a crossed roller bearing for mounting the carriage,
operationally linking all roller bodies of the crossed roller bearing always to a carriage-side bearing surface, and
operating the carriage at an oscillation frequency of at least 50 Hz.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the carriage is operated at an oscillation frequency between 60 Hz and 200 Hz.