Messerschmitt-bolkow-blohm Gmbh

Kernforschungszentrum Karlsruhe Gmbh

Messerschmitt-bolkow-blohm Gesellschaft MIT Beschrankter Haftung

Winfried Brunner

Klaus Schubert

Wilhelm Bier

Gerd Linder

Peter Bichler

Peter Schmid

Wolfgang Simon

Helmut Dederra

A method of producing a finely structured body which includes a plurality of stacked, cut sections of foil at least one of which is provided with grooves in a selected groove direction on at least one surface thereof, and which has a plurality of closely juxtaposed, channel-like perforations with high shape accuracy, true dimensions and high surface quality. The method includes: a. providing a vacuum clamping means comprised of a ground, sintered metal plate which is connected to a vacuum source and which is positioned on a work table which is movable in two mutually perpendicular directions X and Y; b. positioning a machinable foil on the ground, sintered metal plate and clamping the machinable foil thereto by applying an effective amount of vacuum; c. cutting a plurality of parallel grooves 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, each groove of the plurality of grooves having a groove length, a groove width, and a cross-sectional shape that is constant over the groove length and freely selectable; d. cutting the grooved machinable foil into cut sections having selected lengths and widths; and e. stacking the cut sections, wherein 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.

Process for manufacturing finely structured bodies such as heat

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.

Process for manufacturing fine-structured bodies

A press mold half for producing records comprises a mould half having a psing surface thereon, and a channel system beneath the surface for conducting heating and cooling fluids in indirect heat transfer relationship with the surface. The channel system includes spaced apart inflow and outflow fluid collecting chambers, and a number of channels extending over given paths between the chambers, the overall cross section of the channels in regions adjacent the outflow collecting chamber is less than the smallest overall cross section of the channels over the remainder of their paths, thereby resulting in uniform heating and cooling of the material being pressed.

Press mould half, more especially for producing records

Growing community of inventors

Unterhaching, Germany

Winfried Brunner