Machine tool with offset compensation
AssigneeDeutsche Industrieanlagen GmbH Werk Hermann Kolb Maschinenfabrik Koeln
InventorsPeter Russ, Heinz Jansen
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Abstract
A machine tool for maching of crankpins on crankshafts, or of similarly ts-axially offset portions of other types of workpieces, includes an arrangement for indexing the workpiece to a plurality of different positions to place new crankpins in position for machining without having to unclamp the workpiece or stop its rotation. Indexing accuracy is greatly improved and all indexing-related operations are powered by the prime mover of the machine tool rather than requiring separate drives.
Claims32
In a machine tool of the type including at least one headstock and one tailstock and two clamping heads each coupled with one of said stocks for holding and rotating a workpiece which has a longitudinal axis and portions to be machined which are transversely offset from said longitudinal axis and also offset angularly relative to one another, a combination comprising
- at least one indexing head intermediate the headstock and the one clamping head coupled therewith, said indexing head being connected with said one clamping head for rotation about an axis of rotation of said headstock;
- first means on said indexing head for displacement of the same transversely of said axis of rotation by a distance corresponding to the respective transverse offset;
- and
- second means for selectively indexing said indexing head irrespective of whether said one clamping head is rotating or stationary.
Dependencies are inferred from the claim text.