Press brake and bending method using press brake

摘要

A press brake includes a first guide rail on one side, a second guide rail on another side, an ATC device and a first measurement portion movable on the first guide rail, and a second measurement portion movable on the second guide rail. The first and second measurement portions measure a bent angle of a workpiece. The second guide rail is different from the first guide rail in their cross-sectional shapes. The first measurement portion includes a main unit having a sensor, and a first coupling portion coupling the main unit with the first guide rail. The second measurement portion includes the main unit, and a second coupling portion different from the first coupling portion coupling the main unit with the second guide rail. The ATC device and the measurement portions can be made coexistent and the main units of the measurement portions can be made identical to each other.

主权项

1. A press brake including an upper table to which a top tool is attachable and a lower table that is disposed oppositely to the upper table and to which a bottom tool is attachable within a predetermined lateral range to bend a workpiece by the top tool and the bottom tool, the press brake comprising:
a first guide rail extended laterally on one of a front side or a rear side of the lower table; a second guide rail extended laterally on another of the front side or the rear side of the lower table; an ATC device movably supported by the first guide rail to exchange the bottom tool; a first measurement portion movably supported by the first guide rail to measure a dimension of one side of the workpiece; and a second measurement portion movably supported by the second guide rail to measure a dimension of another side of the workpiece, wherein the second guide rail has a different cross-sectional dimension from a cross-sectional dimension of the first guide rail, or is extended on the lower table at a bilaterally asymmetrical position to the first guide rail, the first measurement portion includes a first main unit having a sensor for measuring a dimension of the workpiece, and a first coupling portion for coupling the first main unit with the first guide rail, and the second measurement portion includes a second main unit having an identical configuration to a configuration of the first main unit, and a second coupling portion having a different dimension from a dimension of the first coupling portion for coupling the second main unit with the second guide rail.