초록 ▼

In a method for producing curved work pieces, an extruded profile leaves the die of an extruder in the strand discharge direction and is then bent into a curved shape by external forces. The extruded profile that leaves the die, before being bent, is deflected so that the strand discharge direction

In a method for producing curved work pieces, an extruded profile leaves the die of an extruder in the strand discharge direction and is then bent into a curved shape by external forces. The extruded profile that leaves the die, before being bent, is deflected so that the strand discharge direction extends forwards at an angle counter to the eventual curvature of the work piece. To this end, the die comprises a tool holder in whose receiving opening an extrusion tool package consisting of a die with or without a mandrel and a cover part is disposed. The guide surfaces of the die and/or of the mandrel that produce the discharged strand are designed or disposed to be at an angle with respect to the strand discharge direction which extends at an incline with respect to the center axis of the die counter to the eventual curvature of the work piece.

대표청구항 ▼

In a method for producing curved work pieces, an extruded profile leaves the die of an extruder in the strand discharge direction and is then bent into a curved shape by external forces. The extruded profile that leaves the die, before being bent, is deflected so that the strand discharge direction

In a method for producing curved work pieces, an extruded profile leaves the die of an extruder in the strand discharge direction and is then bent into a curved shape by external forces. The extruded profile that leaves the die, before being bent, is deflected so that the strand discharge direction extends forwards at an angle counter to the eventual curvature of the work piece. To this end, the die comprises a tool holder in whose receiving opening an extrusion tool package consisting of a die with or without a mandrel and a cover part is disposed. The guide surfaces of the die and/or of the mandrel that produce the discharged strand are designed or disposed to be at an angle with respect to the strand discharge direction which extends at an incline with respect to the center axis of the die counter to the eventual curvature of the work piece. the protrusion of the rotating tool between the first and second regions so as to have the first region be in the closest vicinity of one of the concave portions, and the treating of the first and second regions includes rotating, pressing and moving the rotating tool so as to have a material of the first region flow in the same direction as a travel of the rotating tool while a material of the second region flow in the opposite direction of the travel, and to have the first treated region be smaller than the second treated region. 9. A treated member having a surface refined according to the method of claim 8.