Back to results
US 6,439,974 B1Granted
Workpiece holder for a machine tool
AssigneeFritz Studer AG
InventorsErwin Roth, Ulrich Muehlematter
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeFritz Studer AG
InventorsErwin Roth, Ulrich Muehlematter
Estimating the term…
The driving device for a circular grinding machine where the workpiece is driven between two stationary centers comprises a driven device allowing a removable attachment of a driver which is adapted to hold and turn the workpiece by means of elastic force. The driver comprises two adjacent, symmetrically disposed annular spring elements whose junction is provided with a through-going opening which forms two prismatic workpiece holders, as well as respective longitudinal openings disposed in the axis of the points of the prismatic workpiece holders which are provided with prismatic ends for receiving respective, correspondingly shaped bolts of the driven device of the circular grinding machine in order to spread apart the spring elements. A driver of this kind offers a reduced weight, on one hand, and a high precision, on the other hand, and it is particularly adapted for grinding small precision parts.
A driving device for a machine tool which rotatably holds a workpiece between two stationary centers for rotation about a rotational axis, said driving device comprising:
A driving device for a machine tool which rotatably holds a workpiece between two stationary centers for rotation about a rotational axis, said driving device comprising:
Dependencies are inferred from the claim text.