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Patent Searching and Data


Title:
PRODUCTION OF CYLINDER PART OF ANCHOR BOLT
Document Type and Number:
Japanese Patent JPH08252648
Kind Code:
A
Abstract:

PURPOSE: To produce a cylinder part in high mass production effect, in simple way and at low cost by press-deforming one end part of metal tube at several places toward center, forming plural recessed streaks with appropriate length in the axial direction, cutting split along the recessed streak and cutting to desired length.

CONSTITUTION: With using a soft iron 1 tube having a hole from the beginning, a recessed streak 4 is formed to its end part by press, passing margin of a pin passable an end part 2 is reduced and a slit 5 is cut in the recessed streak 4 so that a petal part 3 is separable, the tube is cut to a desired length. Thus, production is executed by press and cutting only, a cylinder part of anchor bolt is mass-produced in short time. Further, when this is used, a mounting hole of concrete bed, etc., is formed beforehand, a cylinder part is inserted and a pin is driven in by hammer, etc., the petal part 3 is forcedly separated outward due to slit, by this method, the bottom part is spread in unfolded fan shape and turned to anchor in concrete bed floor.


Inventors:
TOTANI TATSUO
Application Number:
JP1995000083427
Publication Date:
October 01, 1996
Filing Date:
March 15, 1995
Export Citation:
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Assignee:
KYOEI KK
International Classes:
E02D5/80; B21K1/74; (IPC1-7): B21K1/74
Attorney, Agent or Firm:
加藤 恒久