B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
B21D11/02—Bending by stretching or pulling over a die
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Liquid Crystal Substances
(AREA)
Diaphragms For Electromechanical Transducers
(AREA)
Shielding Devices Or Components To Electric Or Magnetic Fields
(AREA)