Self-tapping fastener
作者： Alan Pritchard , John R. Reynolds
DOI:
关键词: Maximum diameter 、 Tapping 、 Geometry 、 Blank 、 Structural engineering 、 Axial length 、 Screw thread 、 Thread (computing) 、 Fastener 、 Geology 、 Perpendicular
摘要: A self-tapping fastener is provided. The formed from a blank having an odd number of lobes along cross section taken perpendicular to its axis rotation. define relatively high out-of-round tapered thread-forming zone, and low the main body in direction toward drive head. Between zone located additional thread forming axial length approximately one pitch that conforms zone. maximum diameter (at lobes) matches full-diameter section. lower-diameter stabilizing can be provided ahead adjacent tip fastener.
lens.org 参考文章(22)
Herman G Muenchinger, Self-thread forming threaded fasteners and method and apparatus for making the same ,(1970)
Jr Harvey F Phipard, Thread forming fasteners ,(1966)
Herman G. Muenchinger, Thread-forming fastener having dual lobulation and dies for making the same ,(1976)
Louis Oestereicher, Self-locking threaded fasteners ,(1969)
Jr Harvey F Phipard, Self-tapping threaded fasteners ,(1965)
Jr Harvey F Phipard, Method and apparatus for making threaded fasteners ,(1964)
Raymond H Carlson, Method of making serrated-head blanks for fasteners ,(1967)
Herman M. Muenchinger, Self-thread forming threaded fasteners and blanks for making same ,(1972)
Roger W Orlomoski, Self-locking screws ,(1968)
Alfred J. Wintle, Method of fabricating centering bolts and the like ,(1941)