DEVICE FOR PRODUCING A HOLE IN A SHEET-SHAPED MATERIAL
In a device ( 10 ) for producing a hole ( 62 ) in a sheet-shaped material ( 60 ) with a hole tool ( 20 ) and a die plate ( 30 ), the hole tool ( 20 ) is arranged at a first element ( 40 ) rotating about a first axis (A 1 ) and the die plate ( 30 ) is arranged at a second element ( 50 ) rotating about a second axis (A 2 ). The die plate ( 30 ) is manufactured of a hard, wear resistant, reversibly deformable material. Arranged between the second element ( 50 ) and the die plate ( 30 ) is an elastic layer ( 32 ) which has a lesser hardness than the die plate ( 30 ).
1 . A device for producing a hole in a sheet-shaped material comprising a hole tool and a die plate, wherein the hole tool is arranged at a first element rotating about a first axis and the die plate is arranged at a second element rotating about a second axis, the die plate is manufactured of a reversibly deformable material, an elastic layer is arranged between the second element and the die plate and wherein the elastic layer has a lesser hardness than the die plate.
2 . The device according to claim 1 , wherein the die plate has a hardness of 60 to 100 Shore, or of 70 to 90 Shore.
3 . The device according to claim 1 , wherein the die plate has a hardness of at least 80 Shore.
4 . The device according to claim 1 , wherein the die plate is manufactured of polyurethane.
5 . The device according to claim 1 , wherein the layer has a hardness of 50 to 70 Shore.
6 . The device according to claim 5 , wherein the hole tool has a longitudinal axis which is arranged perpendicular toward the first axis.
7 . The device according to claim 1 , wherein the hole tool has a circumferential cutting edge at its free end.
8 . The device according to claim 1 , wherein the hole tool, emanating from its free end, is formed in sections as a hollow cylinder.
9 . The device according to claim 7 , wherein the cutting edge is formed by means of beveling the free end of the wall of the hollow cylinder inwardly.
10 . The device according to claim 7 , wherein the cutting edge has an inside face which corresponds to a lateral area of a truncated cone, wherein the truncated cone has a longitudinal axis which either is identical to the longitudinal axis of the hole tool or is arranged inclined by an angle toward the longitudinal axis of the hole tool.
11 . The device according to claim 7 , wherein the cutting edge lies in a plane which is arranged inclined by an angle toward the perpendicular toward the longitudinal axis of the hole tool.
12 . The device according to claim 7 , wherein the cutting edge has a wave cutting.
13 . The device according to claim 12 , wherein the wave cutting has a plurality of teeth, which are arranged uniformly distributed across the outer circumference of the hole tool.
14 . The device according to claim 12 , wherein the wave cutting has 5 to 12 teeth, or 7 to 9 teeth, which are arranged uniformly distributed across the outer circumference of the hole tool.
15 . The device according to claim 1 , wherein the hole tool is manufactured of metal, or hard metal or steel.
16 . The device according to claim 1 , wherein the first element is actuated by means of a motor.
17 . The device according to claim 1 , wherein the second element is actuated by means of a motor.
18 . The device according to claim 1 , wherein the first axis and the second axis are arranged in parallel to each other.
19 . The device according to claim 1 , wherein the ratio of the outside radii of the first element and of the second element corresponds to the ratio of two prime numbers.
20 . The device according to claim 1 , wherein the second element is arranged movable in the direction of the second axis.
21 . The device according to claim 20 , wherein the device has an excentric device for automatic displacement of the second element.
22 . The device according to claim 1 , wherein the first element and the second element are arranged spaced from each other such that the distance between the first axis and the second axis at least corresponds to the sum of outside radius of the first element, outside radius of the second element and twice the height of the sheet-shaped material.
23 . The device according to claim 1 , wherein the second element has a cylindric core of a hard material, steel, ceramic or plastic material.