C. Ed. Schulte Gesellschaft MIT Beschrankter Haftung Zylinderschlossfabrik

C. Ed. Schulte Gesellschaft MIT Beschränkter Haftung Zylinderschloßfabrik

Ceslocks Gmbh

Thomas Wallberg

Andreas Baumann

Michael Reine

Theo Piotrowski

Jürgen Lienau

A method for profiling the broad sides of a flat key, a key blank being clamped in a clamping device so that the broad side of the key blank is exposed. Guide grooves and variation grooves which are complementary to the longitudinal sectional profile of the cutter teeth are milled into the broad side by advance in the longitudinal direction of the key, in one work operation, using a milling cutter that has cutter teeth on its peripheral surface and rotates about a cutter shaft. To produce undercut grooves, the axis of the cutter shaft is inclined at an angle of inclination relative to the longitudinal center plane of the key, ribs of the cutter teeth producing an undercut guide wall using at least one rib.

Method for profiling a flat key, and flat key produced according to the method

A method for profiling broad sides of a flat reversible key. A key blank is clamped to expose the first broad side of the key blank and complementary grooves and ribs are milled using a milling cutter with cutter teeth by advance in the longitudinal direction of the key relative to the longitudinal section profile of the cutter teeth. The key blank is then clamped in a position turned by 180&#xb0; about the longitudinal center axis of the key so that the second broad side of the blank is exposed, and complementary grooves and ribs are milled into the broad side with milling cutter, by advance in the longitudinal direction of the key. The cutter shaft axes is inclined at an angle of inclination (&#x3c6;) relative to the longitudinal center plane of the key, at least one cutter tooth rib of the cutter teeth producing an undercut guide wall.

Method for profiling a flat reversible key, and flat reversible key, based on a flat reversible key profile, which is produced according to the method

The invention is concerned with a locking cylinder () and a matching key (), wherein the locking cylinder comprises tumbler pins () with a head () and a tip. (). The tip () engages in a coding recess () of the key () and, by withdrawing the key from the locking cylinder, slides along two sliding flanks (), which follow on one another. The dimensions of the conical surface () following on from the rounding of the tip () and the sliding flank () are made to match one another in such a way that the transitional region () between the two sliding flanks is covered by the conical surface in the abutting position.

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Wülfrath, Germany

Thomas Wallberg