TWI649136B

• Main Author: JOURAKU, TAKAO
• Format: Patent
• Language: Chinese
• Published: 01.02.2019
• Subjects: BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE; HABERDASHERY; HUMAN NECESSITIES; JEWELLERY; 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

The present invention provides a forming machine, a metal material forming method, and a manufacturing method of stopping hook member for solving the problem in which of the occurrence of partial damage and/or deterioration on a mandrel caused by a punching head hitting a easily broken part of the m...