Method and device for shaping a rotationally-symmetrical surface
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United States of America Patent
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Dec 12, 2000
Grant Date -
N/A
app pub date -
Apr 13, 1998
filing date -
Oct 13, 1995
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An apparatus and a method for shaping a rotationally-symmetrical surface in a material, where the material is rotated about an axis and a rotating element is placed in contact with the rotating material. The rotating element is provided with a symmetrical, coherent shaping edge, or is provided with such an edge at one end, or as an alternative, is a shaping head which travels around a symmetrical, coherent contour. The axis of rotation of the rotating element is then placed at an angle to the axis of rotation of the material and, during shaping, a force is exerted on the rotating element such that the shaping edge or the shaping head is held in contact with the material and such that the lateral position of the shaping edge or the contour around which the rotating element travels in operation remains approximately constant with respect to the material. The shaping edge/contour has an acircular shape and the orientation thereof is kept approximately constant with respect to the material during shaping. The shape of the shaping edge/contour and the angle between the axis of rotation are matched to the desired ashperical shape of the curves of the material.
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