Boring bar cutting and grinding devices
AssigneeMapal Fabrik fur Prazisionswerkzeuge
InventorDieter Kress
Life of this patent
Estimating the term…
Abstract
A boring bar for machining of borehole surfaces which are arranged axially spaced from each other, in particular crank-shaft and/or cam-shaft bearing holes. The bar has at least one, and preferably a plurality, of cutting devices and at least one, and preferably a plurality of, guide devices each associated with a cutting device. A fluid pressure actuating device acts on both the cutting devices and the guide devices. The actuating device effects a setting movement of each of those devices against a respective defined stop by application of fluid pressure through the boring bar to the cutting devices and the guide devices.
Claims27
A boring bar for machining borehole surfaces, the boring bar comprising:
- a main body;
- at least one cutting device supported on the main body to machine a borehole surface;
- a guide device supported on the main body and associated with the cutting device to be actuated to guide the boring bar and the cutting device during machining of the borehole surface;
- an actuating device acting on the cutting device to urge the cutting device toward a cutting position at the borehole surface, the actuating device being connected to act on the guide device to urge the guide device outward toward the borehole surface, the actuating device for the cutting device and for the guide device is a common actuating device;
- a stop in the main body for the cutting device to set movement of the cutting device toward the borehole surface which movement is caused by the actuating device;
- and
- a second stop to set movement of the guide device outward toward the borehole surface, and the actuating device being connected with the guide device to move the guide device against the second stop.
Dependencies are inferred from the claim text.