Abwicklungsrechner für schiefen Kegel

Measure height perpendicular to the base. Measure apex offset in the base plane from the circle center to the vertical projection of the apex.

The base is divided into chords and each triangular facet uses its true generator lengths. With the default 300 mm base, 400 mm height and 80 mm offset, the generators range from about 406.1 to 461.4 mm.

The result above uses these exact values. This snapshot is included when the page is printed so the output can be checked against the original measurements.

Base diameter

300 mm

Perpendicular apex height

400 mm

Apex offset from center

80 mm

Development divisions

36

Primary result: Longest generator: 461.41 mm.

• Measure from the datum or reference edge described by this tool, and do not mix inside, outside and centerline dimensions.
• Keep inputs in the displayed units and preserve more precision than the final cutting or purchasing tolerance requires.
• When the result is close to a limit, verify it with a test piece, field measurement, manufacturer drawing or qualified project professional.

This is a triangulated circular-edge approximation. More divisions produce a smoother edge but add layout lines. Add the seam separately, mark its orientation and verify a test pattern before production.