JPS6447593A - Method and apparatus for bending plate - Google Patents

Abstract

PURPOSE:To facilitate the manufacture of the title device and make it possible to promptly cope with a variation in the shape into which a plate is to be bent, by rolling a roller in the direction of a tip part of an anvil while pressing the roller against a machine plate supported on an upper surface of the anvil, thereby driving the roller into the tip edge of the anvil, and thereby rolling the roller along the lower surface of the anvil in the direction of a base end part. CONSTITUTION:A machine plate (w) is fixed to a from bed 21, and arms 26, 27 are turned upward with rollers 29, 30 positioned on the tip side of the arms 26, 27, whereby the rollers 29, 30 are moved toward the base side of the arms 26, 27, and are moved to the upper side of anvils 23, 24. Then, the arms 26, 27 are turned downward to press the rollers 29, 30 against the machine plate (w), and the rollers 29, 30 are moved toward tip parts of the arms 26, 27, and are driven into tip edges of the anvils 23, 24. Thereafter, the rollers 29, 30 are moved toward the base parts of the arms 26, 27, and are rolled toward the base parts while pressing the machine plate (w) against lower surfaces of the anvils 23, 24. By this, the machine plate (w) is brought into perfect close contact with the anvils 23, 24, and can be bent along the anvils 23, 24 with high accuracy.