Method and cutting assembly for manufacturing three-dimensional shaped pieces from a pre-fabricated block of a material having large pores
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United States of America Patent
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-
Apr 12, 1994
Grant Date -
N/A
app pub date -
Oct 28, 1992
filing date -
Oct 30, 1991
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Method of cutting a three-dimensional shaped piece of a material having large pores out of a block by trimming the block with adjacent cuts of a predetermined width guided along planes extending tangentially to the surface of the shaped piece whereby scrap of the material is produced, and cutting kerfs into the scrap no later than the trimming along planes extending radially relative to the shaped piece surface and longitudinally substantially parallel to each other, the cutting planes being spaced from each other at the shaped piece surface a maximum distance corresponding to the predetermined width of the adjacent cuts. For this purpose, an ultrasound assembly may be used, which comprises a knife which has a shaft portion extending in the direction of vibration of the knife and a cutting portion attached to the shaft portion and extending transversely to the direction of vibration, the shaft portion and the cutting portion having cutting edges.
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