Tool made from plastic
The invention relates to a tool comprising a partial region made from plastic, in which a material with slide bearing properties is inlaid. Said tool is a moulding tool, which can be applied, for example, in the deep-drawing of metal pieces. The partial region in which the material with slide bearing properties, for example graphite, is inlaid, is a front layer ( 11 ) of the tool, comprising the moulding region thereof. The backing ( 12 ) of the tool is also made from plastic, which can optionally contain conventional fillers. The front layer ( 11 ) of the tool, reinforced, for example, with graphite, permits a deep drawing optionally without the use of lubricants, whereby the moulding region of the tool has good slide bearing properties and a high pressure resistance.
1 . A tool comprising a section made of a plastic, wherein a material with lubricating properties is embedded in the plastic, the tool is a forming tool, and the section made of plastic is a forming region of the tool.
2 . The tool according to claim 1 , wherein the section made of plastic comprises a front layer of the tool.
3 . The tool according to claim 1 , wherein the material with lubricating properties is graphite.
4 . The tool according to claim 3 , wherein the graphite is graphite powder.
5 . The tool according to claim 4 , wherein the graphite powder has a particle size between approximately 50 and approximately 250 μm.
6 . The tool according to claim 2 , wherein the thickness of the front layer is at least 5 mm.
7 . The tool according to claim 6 , wherein the thickness of the front layer is between approximately 5 and approximately 15 mm.
8 . The tool according to claim 1 further comprising a rear structure made primarily of plastic.
9 . The tool according to claim 8 , wherein the plastic of the rear structure contains a filler.
10 . The tool according to claim 9 , wherein the filler is selected from the group consisting of aluminum, gray cast iron, sand, and mixtures thereof.
11 - 13 . (Canceled)
14 . The tool according to claim 10 , wherein the filler is in powder form.
15 . The tool according to claim 1 , wherein the forming tool is a deep-drawing tool.
16 . The tool according to claim 1 , wherein the forming tool is a die, hold-down device, or female die for the deep-drawing of metal parts.
17 . The tool according to claim 1 , wherein the forming tool is a deep-drawing tool for forming metal parts for automobile construction or aircraft construction.
18 . A process for the formation of a part comprising the steps of obtaining a workpiece and subject the workpiece to the action of a tool according to claim 1 .
19 . The process of claim 18 , wherein the process is a deep-drawing process, and the workpiece is sheet metal.