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1. WO2011008384 - CHUCK WITH JAW FOR WORKPIECE HAVING CONSTANT HOLDING FORCE

Publication Number WO/2011/008384
Publication Date 20.01.2011
International Application No. PCT/US2010/038122
International Filing Date 10.06.2010
IPC
B23B 31/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
31Chucks; Expansion mandrels; Adaptations thereof for remote control
02Chucks
CPC
B23B 2231/14
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
2231Details of chucks, toolholder shanks or tool shanks
14Chucks with clamping force limitation means
B23B 2231/26
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
2231Details of chucks, toolholder shanks or tool shanks
26Detection of clamping
B23B 2250/08
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
2250Compensating adverse effects during turning, boring or drilling
08Compensation of centrifugal force
B23B 2260/128
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
2260Details of constructional elements
128Sensors
B23B 31/14
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
31Chucks
02Chucks
10characterised by the retaining or gripping devices or their immediate operating means
12Chucks with simultaneously-acting jaws, whether or not also individually adjustable
14involving the use of a centrifugal force
B23B 31/1627
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
31Chucks
02Chucks
10characterised by the retaining or gripping devices or their immediate operating means
12Chucks with simultaneously-acting jaws, whether or not also individually adjustable
16moving radially
1627Details of the jaws
Applicants
  • ILLINOIS TOOL WORKS INC. [US]/[US] (AllExceptUS)
  • PUPPALA, Madhav [US]/[US] (UsOnly)
  • LUO, Jyi-Jiin [US]/[US] (UsOnly)
  • RAUEN, Christof [DE]/[US] (UsOnly)
  • BOHLER, Erwin [CH]/[US] (UsOnly)
  • KALEJA, Bodo [DE]/[US] (UsOnly)
Inventors
  • PUPPALA, Madhav
  • LUO, Jyi-Jiin
  • RAUEN, Christof
  • BOHLER, Erwin
  • KALEJA, Bodo
Agents
  • HAUPTMAN, Benjamin J.
Priority Data
61/225,00813.07.2009US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CHUCK WITH JAW FOR WORKPIECE HAVING CONSTANT HOLDING FORCE
(FR) MANDRIN À MÂCHOIRE POUR PIÈCE AYANT UNE FORCE DE MAINTIEN CONSTANTE
Abstract
(EN)
A rotatable chuck for securing a workpiece in a machine includes a base element having a center and a plurality of jaw elements movable toward and away from the center. The jaw elements are movable toward and away from the center to clamp the workpiece. The jaw elements exert a measurable clamping force on the workpiece. The clamping force exerted on the workpiece is measured and the jaw elements are moved toward and away from the center to vary the clamping force exerted on the workpiece. A comparator compares the measured clamping force against a predetermined clamping force and the jaw elements are moved, as the chuck is rotating, to adjust the clamping force on the workpiece to the predetermined clamping force.
(FR)
Un mandrin rotatif destiné à fixer une pièce dans une machine comprend un élément de base ayant un centre et une pluralité d'éléments mâchoires pouvant se rapprocher et s'éloigner du centre. Les éléments mâchoires se rapprochent et s'éloignent du centre pour serrer la pièce. Les éléments mâchoires exercent une force de serrage mesurable sur la pièce. La force de serrage exercée sur la pièce est mesurée et les éléments mâchoires se rapprochent et s'éloignent du centre pour faire varier la force de serrage exercée sur la pièce. Un comparateur compare la force de serrage mesurée avec une force de serrage prédéfinie et les éléments mâchoires sont déplacés, lorsque le mandrin tourne, pour régler la force de serrage exercée sur la pièce sur la force de serrage prédéfinie.
Also published as
DE212010000101
Latest bibliographic data on file with the International Bureau