Title:
CLAMPING UNIT FOR CLAMPING CHUCK OF MACHINE TOOL SPINDLE
Document Type and Number:
Japanese Patent JP2018140487
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a clamping unit that can apply high force in two opposite axial directions and hold the same even at high spindle speed.SOLUTION: A clamping unit 10 has a threaded shaft 12 for adjusting the clamp jaws of a clamping chuck. The threaded shaft is axially adjustable in the clamping unit by means of a threaded nut 13 connected to a rotor 15 of an adjustment driving device 15, 18. An electrically operable, releasable coupling device 19, 20, 23 has a first clutch element 19, which is connected in a relatively-unrotatable and axially-slidable manner to the threaded shaft 12, and a second clutch element 20, which cooperates with the first clutch element and is connected in a relatively-unrotatable manner to the rotor. When the coupling device is energized, the threaded shaft and the threaded nut are mutually connected in a relatively-unrotatable manner and prevent axial displacement of the threaded shaft.SELECTED DRAWING: Figure 1
Inventors:
EDWIN REINHARD
DOMINIQUE STEFFEN
DOMINIQUE STEFFEN
Application Number:
JP2018031772A
Publication Date:
September 13, 2018
Filing Date:
February 26, 2018
Export Citation:
Assignee:
STEP TEC AG
International Classes:
B23B31/28; B23B19/02
Domestic Patent References:
| JPH01234105A | 1989-09-19 | |||
| JPH02106206A | 1990-04-18 | |||
| JP2001246510A | 2001-09-11 | |||
| JP2008516788A | 2008-05-22 |
Foreign References:
| US20150113790A1 | 2015-04-30 | |||
| EP2796233A1 | 2014-10-29 |
Attorney, Agent or Firm:
Einzel Felix-Reinhard
Morita Taku
Junichi Maekawa
Hiroyasu Ninomiya
Ueshima
Morita Taku
Junichi Maekawa
Hiroyasu Ninomiya
Ueshima