Metal working – Method of mechanical manufacture – Heat exchanger or boiler making
Patent
1991-05-31
1992-10-06
Cuda, Irene
Metal working
Method of mechanical manufacture
Heat exchanger or boiler making
29 33B, 82 111, 82168, B23P 1700
Patent
active
051520605
ABSTRACT:
A method of producing a finely structured body comprised of a plurality of stacked, cut sections of foil at least one of which is provided with grooves. A machinable foil is wrapped around a cylindrical mandrel of a lathe to overlap opposing edges. The overlapped edges are clamped into an axial recess of the cylindrical mandrel by means of a clamping means and a plurality of grooves cut into the surface of the foil by means of at least one shaping diamond positioned in a feed which is finely adjustable. The plurality of grooves each have a groove length, a groove width, and a cross-sectional shape that is constant over the groove length and is freely selectable. Then, the grooved machinable foil is cut into cut sectoins and the cut sections are stacked. The plurality of grooves have a form precision such that, for groove lengths of more than 1000 .mu.m, the groove width has an accuracy of about .+-.1 .mu.m for land widths which equal or exceed about 15 .mu.m. Alternately, the machinable foil may be stretched over a vacuum clamping means comprised of a ground, sintered metal plate positioned on a work table which is movable in two mutually perpendicular directions X and Y and a plurality of grooves cut into the surface of the machinable foil by means of at least one shaping diamond positioned on a cutting spindle and adjustable in a direction Z.
REFERENCES:
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patent: 4620463 (1986-11-01), Horn et al.
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"Process Intensification . . . ", Chem. Eng. Res. Des., vol. 64; Jul. 1986.
Bichler Peter
Bier Wilhelm
Brunner Winfried
Linder Gerd
Schmid Peter
Cuda Irene
Kernforschungszentrum Karlsruhe GmbH
Messerschmidt-Bolkow-Blohm
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