US 2004/0200252 A1Published application

Bending machine with bending tools on opposite sides of a tool platen

AssigneeTrumpf Rohrtechnik GmbH + Co. KG

InventorFrank Schmauder

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Abstract

A bending machine for the bending of rod-shaped and/or bar-shaped workpieces and especially of pipes incorporates a bending device (5) with bending tools (10, 11) that are provided on both sides of a tool platen (12). These bending tools (10, 11) include in each case a bending swage (13, 16) and at least one thrust member. At least one thrust member on one side of the tool platen and at least one thrust member on the other side of the tool platen (12) are drivingly coupled for joint movement in the transverse direction of the workpiece, with the movement in the transverse direction of the workpiece for shifting the thrust member(s) on one side of the tool platen (12) into its or their operating position permitting movement of the associated thrust member(s) on the other side of the tool platen (12) in the opposite direction. As an alternative or in addition, the thrust members are in the form of slide rails (15, 18), drivingly coupled on both sides of the tool platen (12) for movement in the longitudinal direction of the workpiece.

Claims20

Dependent claims

A bending machine for the bending of rod-shaped and bar-shaped workpieces including:

(a) support for the workpiece:
(b) a tool platen (12, 112);
and
(c) a bending device (5, 105) comprising selectively deployable bending tools (10, 11;
110, 111) at least one of which is provided on one side of said platen and at least one other tool is provided on the opposite side of said tool platen (12, 112), each bending tool including at least one bending swage (13, 16;
113, 164;
116, 165) and at least one thrust member, said swage and thrust member being power driven in the transverse direction of the workpiece between an operating and idle position, said bending swages (13, 16;
113, 164;
116, 165) being positioned along a bending axis (19, 119) that extends in the transverse direction of the workpiece, the operating position of at least one thrust member on one side of the tool platen (12, 112) being coordinated with the idle position of at least one thrust member on the other side of the tool platen (12, 112), whereby, the workpiece on the active bending tool (10, 11;
110, 111), when effectively impacted in the transverse direction of the workpiece, can be bent around the bending swage (13, 16;
113, 164;
116, 165) by means of at least one thrust member in its operating position, said at least one thrust member on one side and at least one thrust member on the other side of the tool platen (12, 112) being coupled and jointly driven for their movement in the transverse direction of the workpiece, whereby, as the thrust member on one side of the tool platen (12, 112) is moved in the transverse direction into its operating position, the associated thrust member on the other side of the tool platen (12, 112) can be moved the opposite way in the transverse direction of the workpiece.

9 more elements

A bending machine for the bending of rod-shaped and bar-shaped workpieces including:

(a) support for the workpiece:
(b) a tool platen (12, 112);
and
(c) a bending device (5, 105) comprising selectively deployable bending tools (10, 11;
110, 111), at least one of which is provided on one side of said platen and at least one other tool is provided on the opposite side of said tool platen (12, 112), each bending tool including at least one bending swage (13, 16;
113, 164;
116, 165) and at least one thrust member in the form of slide rails (15, 18;
115, 167;
118, 169), whereby the workpiece on the active bending tool (10, 11;
110, 111), as it is bent around the bending swage (13, 16;
113, 164;
116, 165), can be buttressed by means of at least one slide rail (15, 18;
115, 167;
118, 169) that is in its operating position in the transverse direction of the workpiece, whereby at least one slide rail (15, 18;
115, 167;
118, 169) of the active bending tool (10, 11;
110, 111), when in its operating position in the transverse direction of the workpiece, can be power-driven in the longitudinal direction of and jointly with the workpiece as the workpiece is being bent, and that the said slide rail (15, 18;
115, 167;
118, 169) is drivingly coupled to at least one idle slide rail (15, 18;
115, 167;
118, 169) of a bending tool (10, 11;
110, 111) on the opposite side of the tool platen (12, 112) for movement in the longitudinal direction of the workpiece.

19 more elements

Dependencies are inferred from the claim text.