# US 7,080,570 B2 · Drive device for machine tools

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- Number: US 7,080,570 B2
- Document ID: US7080570B2
- Status: Granted
- Kind: B2
- Application number: 10/619,583
- Filed: 2003-07-16
- Published: 2004-02-05
- Granted: 2006-07-25
- Earliest claimed: 2002-08-01
- Assignees: Redex
- Inventors: Pierre Casanova; Pierre Vaslier; Jean-Bernard Tetart
- Web page: https://patentgrep.com/patent/US7080570B2

## CPC

- B23Q 11/121: {with lubricating effect for reducing friction (F16C33/66 and F16H57/04 take precedence)}
- B23Q 5/38: feeding continuously
- B23Q 5/385: {using a gear and rack mechanism or a friction wheel co-operating with a rail}
- B23Q 5/56: Preventing backlash
- F16H 37/065: {with a plurality of driving or driven shafts (F16H37/0806 takes precedence)}
- F16H 57/12: Arrangements for adjusting or for taking-up backlash not provided for elsewhere
- F16H 1/14: comprising conical gears only
- F16H 1/222: {with non-parallel axes}
- F16H 55/28: Special devices for taking up backlash
- F16H 2057/121: {using parallel torque paths and means to twist the two path against each other}
- Y10T 74/19023: Plural power paths to and/or from gearing
- Y10T 74/19623: Backlash take-up
- Y10T 74/1967: Rack and pinion
- 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
- F16H: GEARING
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A machine tool drive device comprising in a structure: a line of inlet shafts; and angle takeoffs, each having an outlet shaft perpendicular to the line of inlet shafts, each being coupled to the inlet of a reversible gearbox whose outlet shaft carries a pinion, for meshing with a rack, in which the line of inlet shafts comprises two shafts in alignment that are coupled together end to end by a torque transmission member that is elastically deformable in torsion, possessing declutchable elements for connection in rotation with at least one of the shafts, and in which the other end of the shaft is provided with engagement elements enabling it to be turned.

## Claims

### Claim 1

A drive device for a machine tool, the device comprising in a structure:
a line of inlet shafts;
first and second angle takeoffs each having a respective outlet shaft perpendicular to the line of inlet shafts; and
each outlet shaft being coupled to the inlet of a reversible gearbox whose outlet shaft carries a pinion, the two pinions being for meshing with a rack,
wherein the line of inlet shafts comprises two shafts in alignment that are coupled together end to end by a torque transmission member that is elastically deformable in torsion, said line of input shafts possessing declutchable means for connection in rotation to at least one of the shafts, and
wherein the other end of said shaft is provided with releasable engagement means enabling it to be turned.

### Claim 2 (depends on 1)

A device according to claim 1, wherein the shafts of the line of inlet shafts and the angle takeoffs and their cases are identical.

### Claim 3 (depends on 2)

A device according to claim 2, wherein the coupling ends of the two shafts of the line of inlet shafts are identical.

### Claim 4 (depends on 1)

A device according to claim 1, wherein the structure comprises a main element that is substantially in the form of a rectangular parallelepiped with the line of inlet shafts extending along one of its faces and with the outlet pinions projecting from the opposite face parallel to the preceding face, the other four faces forming faces suitable for fixing the device to a machine tool.

### Claim 5 (depends on 1)

A device according to claim 1, wherein, with the exception of the structure and the torque transmission member, the drive and support members relating to either pinion, including said pinion, are identical to the corresponding members relating to the other pinion.

### Claim 6 (depends on 1)

A device according to claim 1, including an oiling pinion mounted loose on the structure between the two said pinions.