METHOD FOR WORKING STEEL SHEET, AND APPARATUS FOR WORKING STEEL SHEET

摘要

Provided is a technique capable of inexpensively working a steel sheet. A method for working a workpiece with an apparatus for working a workpiece, includes: a drawing step for performing drawing with a drawing device having an upper die and a lower die; and a cutting step for cutting the drawn workpiece with a cutting device having nibblers. The nibbler has a cylindrical case, a punch housed in the case, which reciprocates in a top-bottom direction to punch the workpiece, and a die arranged below the case, the die having a die hole into which the punch enters, and an ejecting hole communicating with the die hole, through which a scrap is ejected. The nibbler trims the workpiece fed between the case and the die.

主权项

1. A method for working a steel sheet into a predetermined shape,
comprising: a drawing step for drawing the steel sheet using at least one pair of dies; and a cutting step for cutting the steel sheet drawn in the drawing step using at least one nibbler, wherein the nibbler has a cylindrical case, a punch housed in the case, which reciprocates in a top-bottom direction to punch the steel sheet, and a die arranged below the case so as to be on the opposite side of the case across the steel sheet, the die having a die hole into which the punch enters, and an ejecting hole communicating with the die hole, through which a scrap punched from the steel sheet is ejected, and in the cutting step, while moving the nibbler, the steel sheet fed between the case and the die is continuously punched by the punch to cut the steel sheet.