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US 11,179,786 B2Granted
Eccentric cutting drive having a variable stroke
AssigneeRattunde AG
InventorUlrich Rattunde
Life of this patent
Estimating the term…
Abstract
A pipe cutting machine, which includes a hole-type movable cutting die (6b), which is driven by a drive lever (7), by means of which circular movements with a continuously variable stroke (h) can be performed, an eccentrically shaped crank pin bearing (26) in an outer shaft (18), in which a crank pin (11), which is arranged eccentrically on a crank pin drive (23), is movably supported in relation to the outer shaft (18), the crank pin (11) being in operative connection with the drive lever (7).
Claims9
A cutting device comprising:
- a hole shaped movable cutting die (6b), which is driven by a drive lever (7) capable of performing circular movements with a continuously variable stroke (h) crank pin bearing (26) shaped eccentrically with respect to an outer shaft (18), in which a crank pin (11), which is arranged eccentrically on a crank pin drive (23), is movably supported in relation to the outer shaft (18), the crank pin (11) being in operative connection with the drive lever (7);
- wherein the crank pin drive (23) has an internal toothing (24) and the internal toothing (24) meshes with an external toothing (22) of an inner shaft (14);
- and
- wherein the inner shaft (14) is passed through a tubular section of the outer shaft (18).
1 more element
Dependencies are inferred from the claim text.