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US 11,260,440 B2Granted
Caterpillar-traction drawing machine and drawing method
AssigneeSMS group GmbH Sitz Duesseldorf
InventorsThomas Cmiel, Joerg Lindbuechl, Dirk Hessberger
Life of this patent
Estimating the term…
Abstract
A caterpillar-traction drawing machine and a method for drawing of elongated workpieces can be provided with at least one drawing tool fastened pivotally on a tool holder and/or with at least two identical drawing recesses, which can be brought selectively into a drawing position, so that the influence of any fatigue phenomena that may exist is minimized. For the same reason, a caterpillar-traction drawing machine is advantageous in which the two chains of the caterpillar-traction unit are block chains and are respectively braced via an idler roller chain including idler rollers on respectively one pressing beam.
Claims29
A caterpillar-traction drawing machine for drawing of an elongated workpiece in a drawing direction along a drawing line comprising:
- (a) a drawing die;
- and
- (b) a caterpillar-traction unit disposed in the drawing direction down-line from the drawing die;
- wherein the caterpillar-traction unit comprises:
- at least first and second revolving chains having at least first and second tool holders, respectively, carrying first and second drawing tools, respectively, in first and second drawing positions, respectively;
- a press for application of a pressing force on the first and second drawing tools with a component of the pressing force directed toward the drawing line;
- and
- (c) a gripping region;
- wherein the first and second drawing tools are provided with at least first and second drawing recesses, respectively, in the first and second drawing positions, respectively, in the gripping region and rest with the first and second drawing recesses, respectively, on the workpiece and by the press are pressed against the workpiece;
- wherein the first drawing recesses comprise two first drawings recesses disposed at right angles to one another on the first drawing tool;
- and
- wherein at least the first drawing tool is fastened pivotally on the first tool holder and is pivotable without removing the first drawing tool from the first tool holder.
9 more elements
A drawing method for drawing an elongated workpiece in a drawing direction along a drawing line through a drawing die, the method comprising:
- (a) disposing a caterpillar-traction unit down-line in the drawing direction from the drawing die, wherein the caterpillar-traction unit comprises at least first and second revolving chains having at least first and second tool holders, respectively, carrying first and second drawing tools, respectively, in first and second drawing positions, respectively, wherein the first and second drawing tools are provided with at least first and second drawing recesses, respectively, wherein the first drawing recesses comprise two first drawings recesses disposed at right angles to one another on the first drawing tool;
- (b) disposing and revolving the first and second revolving chains so that the first and second drawing tools come into contact in the first and second drawing positions with a first drawing recess of the two first drawing recesses of the first drawing tool and are pressed against the workpiece to apply traction forces on the workpiece;
- and
- (c) drawing the workpiece;
- wherein after or during drawing of the workpiece when the first and second drawing tools are not being pressed against the workpiece, at least the first drawing tool remains on the first tool holder and is pivoted without removing the first drawing tool from the first tool holder.
2 more elements
A caterpillar-traction drawing machine for drawing of an elongated workpiece in a drawing direction along a drawing line comprising:
- (a) a drawing die;
- and
- (b) a caterpillar-traction unit disposed in the drawing direction down-line from the drawing die;
- wherein the caterpillar-traction unit comprises:
- at least first and second revolving chains having at least first and second tool holders, respectively, carrying first and second drawing tools, respectively, in first and second drawing positions, respectively;
- a press for application of a pressing force on the first and second drawing tools with a component of the pressing force directed toward the drawing line;
- and
- (c) a gripping region;
- wherein the first and second drawing tools are provided with at least first and second drawing recesses, respectively, in the first and second drawing positions, respectively, in the gripping region and rest with the first and second drawing recesses, respectively, on the workpiece and by the press are pressed against the workpiece;
- wherein the first drawing recesses comprise two first drawings recesses disposed at right angles to one another on the first drawing tool;
- wherein at least the first drawing tool is fastened pivotally on the first tool holder and is pivotable without removing the first drawing tool from the first tool holder;
- and
- wherein the first and second chains are block chains and are braced via first and second idler roller chains, respectively comprising idler rollers on first and second pressing beams, respectively.
10 more elements
A caterpillar-traction drawing machine for drawing of an elongated workpiece in a drawing direction along a drawing line comprising:
- (a) a drawing die;
- and
- (b) a caterpillar-traction unit disposed in the drawing direction down-line from the drawing die;
- wherein the caterpillar-traction unit comprises:
- at least first and second revolving chains having at least first and second tool holders, respectively, carrying first and second drawing tools, respectively, in first and second drawing positions, respectively;
- a press for application of a pressing force on the first and second drawing tools with a component of the pressing force directed toward the drawing line;
- and
- (c) a gripping region;
- wherein the first and second drawing tools are provided with at least first and second drawing recesses, respectively, in the first and second drawing positions, respectively, in the gripping region and rest with the first and second drawing recesses, respectively, on the workpiece and by the press are pressed against the workpiece;
- wherein the first drawing recesses comprise two first drawings recesses disposed at right angles to one another on the first drawing tool;
- and
- wherein at least the first drawing tool is fastened displaceably on the first tool holder and is displaceable without removing the first drawing tool from the first tool holder.
9 more elements
A drawing method for drawing an elongated workpiece in a drawing direction along a drawing line through a drawing die, the method comprising:
- (a) disposing a caterpillar-traction unit down-line in the drawing direction from the drawing die, wherein the caterpillar-traction unit comprises at least first and second revolving chains having at least first and second tool holders, respectively, carrying first and second drawing tools, respectively, in first and second drawing positions, respectively, wherein the first and second drawing tools are provided with at least first and second drawing recesses, respectively, wherein the first drawing recesses comprise two first drawings recesses disposed at right angles to one another on the first drawing tool;
- (b) disposing and revolving the first and second revolving chains so that the first and second drawing tools come into contact in the first and second drawing positions with a first drawing recess of the two first drawings recesses of the first drawing tool and are pressed against the workpiece to apply traction forces on the workpiece;
- and
- (c) drawing the workpiece;
- wherein after or during drawing of the workpiece when the first and second drawing tools are not being pressed against the workpiece, at least the first drawing tool remains on the first tool holder and is displaced without removing the first drawing tool from the first tool holder.
2 more elements
Dependencies are inferred from the claim text.