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US 5,857,251 AGranted
Machine for machining sheet-like articles
AssigneeP. E. Mader AG
InventorHermann Schwarzenberger
Life of this patent
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AssigneeP. E. Mader AG
InventorHermann Schwarzenberger
Estimating the term…
The machine for the machining of sheet-like articles (12) has a toolholder (90) fitted with a milling cutter (92). Said toolholder can be positioned in the direction of the arrow (x). The clamping device (10) capable of being moved in and counter to the direction of the arrow (y) has clamps (20, 22, 24), of which the first clamp (20) and second clamp (22) are provided with a centering pin (41, 41'). The article (12) to be machined has centering holes which are arranged at the corner points of a right-angled isosceles triangle, the lateral side length of which corresponds to the spacing of the centering pins (41, 41'). The article (12) to be machined can thereby be inserted into the clamping device (10) in two positions rotated through 90.degree. relative to one another. In order, after machining in one direction, to rotate the article (12) through 90.degree. for machining in the other direction, the machine has a rotation device (14), the axis of rotation (16) of which is displaceable along a straight positioning line (50) and, as seen in the direction of the arrow (y), can be locked centrally between the centering pins (41, 41'). The straight positioning line (50) forms an angle of 45.degree. with a straight base line (48) which runs through the centering pins (41, 41').
A machine for the machining of sheet-like articles comprising a toolholder for holding a tool for machining of said articles, a clamping device for the article to be machined in each case, said clamping device defining a clamping plane and having two centering members of adjustable spacing, a drive for moving the toolholder and the clamping device relative to one another in a machining direction, a rotation device for rotating the article to be machined in each case, after machining in one direction, for subsequent machining in a second direction, said rotation device having an axis of rotation which runs at least approximately at right angles to the clamping plane, means for enabling a movement of said axis of rotation in the direction of a straight positioning line running through a first of the two centering members and forming an angle of 45.degree. with a straight base line defined by the two centering members and means for fixing said axis of rotation at the point of intersection of this straight positioning line with a mid-perpendicular between the centering members to the straight base line for the rotation of the article.
A machine for the scoring of printed circuit boards comprising a toolholder for holding a scoring tool, a clamping device for the printed circuit board to be scored in each case, said clamping device defining a clamping plane and having two centering members of adjustable spacing, a drive for moving the toolholder and the clamping device relative to one another in a machining direction, a rotation device for rotating the printed circuit board to be machined in each case, after machining in one direction, for subsequent machining in a second direction, said rotation device having an axis of rotation which runs at least approximately at right angles to the clamping plane, means for enabling a movement of said axis of rotation in the direction of a straight positioning line running through a first of the two centering members and forming an angle of 45.degree. with a straight base line defined by the two centering members and which means for fixing said axis of rotation at the point of intersection of this straight positioning line with a mid-perpendicular between the centering members to the straight base line for the rotation of the printed circuit board.
Dependencies are inferred from the claim text.