JPS5896840U

JPS5896840U - Hexagonal nib for forging hexagonal bolts with upset type flanges

Info

Publication number: JPS5896840U
Application number: JP19267281U
Authority: JP
Inventors: 田中　誠之助
Original assignee: Saga Tekkohsho Co Ltd
Current assignee: Saga Tekkohsho Co Ltd
Priority date: 1981-12-25
Filing date: 1981-12-25
Publication date: 1983-07-01
Also published as: JPS6145949Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は、従来のアプセット型ボルトの正面図、第２図
は、第１図の１部透視側面図、第３図は、フランジ部丸
抜き工程前の形状でフランジ外周にボルト素材が張出し
ている状態の正面図、第４図は、第３図の１部透視側面
図、第５図は、従来のアプセット型ボルトの他の実施例
の１部透視、切欠側面図、第６図は、第５図の右側面図
、第７図Ｃｊ１ボルト頭部を冷間鍛造している状態のヘ
ッダーの部分断面図、第８図は、この考案に係るアプセ
ット型フランジ付き６角ボルトの鍛造用６角ニブを有す
るヘッダーの拡大部分断面図、第９図は、第８図の他の
実施例の拡大部分断面図、第１０図は、第８図のヘッダ
ーにより鍛造したアプセット型６角ボルトの正面図、第
１１図は、第１０図の１部切欠右側面図、第１２図は、
第９図のヘッダーにより鍛造したアプセット型６角ボル
トの正面図、第１３図は、第１２図の１部切欠右側面図
である。ｂ・・・ボルト：１・・・軸部；２・・・フランジ；３
・・・頭部；４・・・６角対角部；５晶凹部；７・・・
ボルトｂのフランジの環状突起；８・・・ボルトｂのフ
ランジの環状＜ぼみ；ｈ・・・ヘッダー；９・・・６角
ニブ；１０・・・６角ニブ　。９のフランジ２に対応する面；１１・・・環状くぼみ：
１２・・・環状突起；１３・・・６角パンチ；１４・・
・ダイス。Figure 1 is a front view of a conventional upset-type bolt, Figure 2 is a partially transparent side view of Figure 1, and Figure 3 is the shape before the flange rounding process, with the bolt material overhanging the flange outer circumference. 4 is a partially see-through side view of FIG. 3, FIG. 5 is a partially see-through, notched side view of another embodiment of the conventional upset type bolt, and FIG. 6 is a partially see-through side view of the conventional upset type bolt. , the right side view of Fig. 5, Fig. 7 a partial sectional view of the header in a state where the head of the Cj1 bolt is cold forged, and Fig. 8 is a forging hexagonal bolt with an upset type flange according to this invention. 9 is an enlarged partial sectional view of a header having a hexagonal nib; FIG. 9 is an enlarged partial sectional view of another embodiment of FIG. 8; and FIG. 10 is an enlarged partial sectional view of a header with hexagonal nibs. The front view, Fig. 11 is a partially cutaway right side view of Fig. 10, and Fig. 12 is a partially cutaway right side view of Fig. 10.
FIG. 9 is a front view of an upset type hexagonal bolt forged by the header, and FIG. 13 is a partially cutaway right side view of FIG. 12. b... Bolt: 1... Shaft; 2... Flange; 3
... Head; 4... Hexagonal diagonal part; 5-crystal concave part; 7...
8... Annular protrusion on the flange of bolt b; 8... Annular depression on the flange of bolt b; h... Header; 9... Hexagonal nib; 10... Hexagonal nib. Surface corresponding to flange 2 of 9; 11... annular recess:
12... Annular projection; 13... Hexagonal punch; 14...
·dice.

Claims

[Scope of utility model registration request]

(1) With an upset type flange in which one or more annular recesses 11 are provided concentrically with the axis of the bolt material on the surface 18 of the hexagonal nib 9 corresponding to the upper surface of the flange 2 of the bolt material B to be forged. Hexagonal nib for forging hexagonal bolts.

(2) Registration of a utility model in which one or more annular protrusions 12 are formed concentrically with the axis of the bolt material on the surface 10 of the hexagonal nib 9 corresponding to the upper surface of the flange 2 of the bolt material B to be forged. A hexagonal nib for forging an upset type flanged hexagonal bolt according to claim (1).