SHEET METAL WORKING METHOD AND SYSTEM, BLANK WORKING DEVICE USED FOR THE SHEET METAL WORKING SYSTEM, WORK THICKNESS MEASURING DEVICE, AND SPRING-BACK MEASURING DEVICE

摘要

PROBLEM TO BE SOLVED: To omit any trial bending, to reduce the number of the trial bending, and to perform the efficient bending by detecting the true thickness or spring- back quantity of a blank to be bent in a blanking process in advance.;SOLUTION: In the blanking process, a sample and a blank are bent with respect to a work leaving a small connection part non-worked, at least one of the thickness at an arbitrary position of the work and the spring-back quantity during the bending by the sample is detected, and the quantitative data on the material characteristic are calculated and stored in a control device 7. At least one information out of the thickness and the spring-back quantity is transmitted to a control device 9 of a bender 5 in the bending process after the blanking process. Since the information is incorporated in the bending control as a control parameter in the bending stage, the target bending angle can be obtained from a first bending without any trial bending.;COPYRIGHT: (C)2002,JPO