3-phase crankshaft machining
AssigneeBoehringer Werzeugmaschinen GmbH
InventorsHans Schrod, Wolf-Dietrich Voss
Life of this patent
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Abstract
The present invention relates to a method and an apparatus for the finish-machining of the bearing diameters, particularly the main bearing diameters and of the adjoining cheek side surfaces on crankshafts and similar workpieces in a single chucking. In order that this machining can be carried out rapidly and nevertheless with a high quality of production, the following method steps are carried out, one after the other: milling of the cheek side surfaces to nominal size up to the bearing diameter; turning of the bearing diameter down to a small oversize; turning-broaching of the bearing diameters to nominal size in order to obtain a good quality surface, and possibly turning/turning-broaching of recesses, clearance cuts and undercuts in the region of the bearings.
Claims20
A method for finish-machining of main bearing diameters and adjoining cheek side surfaces on crankshafts and similar workpieces in one chucking, comprising the steps of:
- milling said cheek side surfaces to nominal size up to said bearing diameter;
- turning said bearing diameter down to a slight oversize;
- and
- turning-broaching said bearing diameter to nominal size in order to obtain a good quality surface.
Dependencies are inferred from the claim text.