Electric-drive steady rest
AssigneeRoehm GmbH
InventorsEugen Hangleiter, Peter Schenk
Life of this patent
Estimating the term…
Abstract
A steady rest has a body juxtposable with a workpiece rotatable about a workpiece axis. Two arm elements are pivoted on the body and carry outer rollers radially engageable with the workpiece. A center element shiftable on the body in a straight line generally radially of the axis carries a center roller engageable radially with the workpiece. The rollers are angularly spaced about the workpiece. An electric actuator mounted on the body is connected by a transmission to the elements for displacing the respective roller radially relative to the workpiece.
Claims14
A steady rest comprising:
- a body juxtposable with a workpiece rotatable about a workpiece axis;
- two arm elements pivoted on the body and carrying outer rollers radially engageable with the workpiece;
- a center rod centered on a rod axis extending generally radially of the workpiece, shiftable on the body axially of the rod axis, and carrying a center roller engageable radially with the workpiece, the rollers being angularly spaced about the workpiece;
- an electric motor mounted on the body and having a rotary output;
- and
- transmission means on the body coupled between the rod and the rotary output of the motor for displacing the center roller radially relative to the workpiece axis and axially of the rod axis.
A steady rest comprising:
- a body juxtposable with a workpiece rotatable about a workpiece axis;
- two arm elements pivoted on the body and carrying outer rollers radially engageable with the workpiece;
- a center rod centered on a rod axis extending generally radially of the workpiece, shiftable on the body axially of the rod axis, and carrying a center roller engageable radially with the workpiece, the rollers being angularly spaced about the workpiece;
- an electric actuator mounted on the body;
- transmission means on the body coupled between one of the elements and the actuator for displacing the respective roller radially relative to the workpiece axis and axially of the rod axis;
- a controller connected to the actuator for operating same;
- and
- a spring braced axially between the rod and the body and urging the rod toward the workpiece axis.
A steady rest comprising:
- a body juxtposable with a workpiece rotatable about a workpiece axis;
- two arm elements pivoted on the body and carrying outer rollers radially engageable with the workpiece;
- a center rod centered on a rod axis extending generally radially of the workpiece, shiftable on the body axially of the rod axis, and carrying a center roller engageable radially with the workpiece, the rollers being angularly spaced about the workpiece;
- an electric actuator mounted on the body;
- transmission means on the body coupled between one of the elements and the actuator for displacing the respective roller radially relative to the workpiece axis and axially of the rod axis;
- a controller connected to the motor for operating same;
- and
- an indicator coupled axially to the rod and axially shiftable therewith.
Dependencies are inferred from the claim text.