Mandrel cleaning device for extrusion press
AssigneeKabushiki Kaisha Kobe Seiko Sho
InventorsTatsuhiko Noyori, Masakazu Ueda, Masanobu Aoki, Takashi Kajima, Tsuneharu Masuda
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Abstract
A mandrel cleaning device capable of automatically performing cleaning operation in an extrusion press of the type which has a pressurizing stem for pressing a billet in a container toward a die and a mandrel axially slidable in and relative to the pressurizing stem for determining the internal shape of a hollow extruding material, the mandrel cleaning device having a rotary mechanism for rotating the mandrel about its axis, a grinder mechanism adapted to grind a tip portion at the fore end of the mandrel, and a transfer mechanism for moving the grinder mechanism toward and away from the mandrel.
Claims3
A mandrel cleaning device for an extrusion press including a pressurizing stem for pressing a billet in a container toward a die and a mandrel axially slidable in and relative to said pressurizing stem for determining the internal shape of a hollow extruding material, comprising:
- rotary drive means for rotating said mandrel about the axis thereof;
- grinder means for grinding an exterior tip portion at the fore end of said mandrel simultaneously with rotation of said mandrel by said rotary driven means;
- and
- transfer means for selectively moving said grinder means toward and away from said mandrel.
A mandrel cleaning device for an extrusion press including a pressurizing stem for pressing billet in a container toward a die and a mandrel axially slidable in and relative to said pressurizing stem for determining the internal shape of a hollow extruding material, comprising:
- rotary drive means for rotating said mandrel about the axis thereof;
- grinder means for grinding an exterior tip portion at the fore end of said mandrel simultaneously with rotation of said mandrel by said rotary drive means;
- a scalping ring axially slidably fitted on said mandrel;
- a back-up mechanism for backing up said scalping ring;
- and
- transfer means for selectively moving said grinder means and said back-up mechanism toward and away from said mandrel.
Dependencies are inferred from the claim text.