Patent ID: 9545654
Date: 2017-01-17
CPC Classifications: B21D

Claim:
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.