BENDING METHOD AND BENDING SYSTEM

• Main Authors: IMAI KAZUNARI, KUBOTA TERUYUKI
• Format: Patent
• Language: English
• Published: 19.09.2000
• Edition: 7
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

PROBLEM TO BE SOLVED: To make the clamping position of a robot follow up on the locus of a work during a bending process. SOLUTION: In the robot 35 with which the work W is freely positioned to a bending machine, by parameters such as the conditions of die, conditions of work, conditions of product or the like, a work holding angle 3 in a state before springback which is put between a punch and a die after completing a ram stroke calculated by the springback amount and a work winding angle by which a region where the work W is wound around the tip part of the punch is expressed, a die contact position (X1, Y1) in the contact position where the work is brought into contact with the horizontal part of the die shoulder part is calculated. By the R-value of the tip of the punch, punch angle, die angle, thickness t and work winding angle 1, the length S1 of the bending deformation region of the work is calculated. The work clamping position (X2, Y2) of the robot 35 is calculated from the above (X1, Y1), S1 and width of the work. The gripper 37 of the robot 35 is followed up so as to be situated on the calculated value of this (X2, Y2).