Power-driven steady rest for lathes
AssigneeOerlikon-Boehringer GmbH
InventorHermann Berbalk
Life of this patent
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Abstract
The invention relates to a power-driven steady rest for lathes, especially crankshaft turning machines, having a drive gear encompassing the workpiece, in which there is disposed a chuck for holding the workpiece and which is held on both sides adjacent the outer circumference by a bearing in a supporting plate fastened to the machine bed. The drive gear bearing is improved with regard to load bearing capacity and rotatory speed capability by the fact that the bearing consists of individual roller bearings, each of which is formed of a roller and a roller holder fastened to the supporting plate.
Claims12
In a power driven steady rest for a lathe, especially for a crankshaft turning machine:
- a supporting plate to be fastened to a machine bed of the lathe;
- a drive gear rotatably supported in said plate for encompassing a workpiece to be machined, and having means for receiving a chuck for holding a workpiece;
- said drive gear having an axis;
- means drive said driving gear;
- and bearing means rotatably supporting said gear on opposite sides adjacent its outer circumference in said supporting plate, said bearing means comprising two sets consisting of a plurality of individual roller bearings respectively on opposite sides of said drive gear;
- the roller bearings of each set being closely spaced with respect to each other and extending around a major part of the circumference of the drive gear;
- each of said bearings being formed by a roller and a roller holder fastened to said supporting plate, the rollers having axes at an oblique angle to the axis of the drive gear, and having obliquely angled races disposed on the supporting plate and on the drive gear.
Dependencies are inferred from the claim text.