JPS578013A - Method of cutting of thermally-extended rough bar - Google Patents

Method of cutting of thermally-extended rough bar

Info

Publication number
JPS578013A
JPS578013A JP8331980A JP8331980A JPS578013A JP S578013 A JPS578013 A JP S578013A JP 8331980 A JP8331980 A JP 8331980A JP 8331980 A JP8331980 A JP 8331980A JP S578013 A JPS578013 A JP S578013A
Authority
JP
Japan
Prior art keywords
cut
cutting
tip end
rough bar
bar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8331980A
Other languages
Japanese (ja)
Inventor
Masuhiro Sato
Ichiro Kokubo
Jiro Jizaimaru
Mikio Takasugi
Hidenori Shirasawa
Yuji Koyama
Yoshitaka Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP8331980A priority Critical patent/JPS578013A/en
Publication of JPS578013A publication Critical patent/JPS578013A/en
Pending legal-status Critical Current

Links

Landscapes

  • Shearing Machines (AREA)

Abstract

PURPOSE: To obtain an efficient cutting of a thick bar with a conventional crop shear by a method wherein the tip end of the rough bar is cut in the thickness direction by melting technique so as to have a tapered surface and then the tapered tip end is cut.
CONSTITUTION: The roughly extended bar 1 is cut at the tip end by melting technique in the thickness direction by a gas cutting machine GC so as to have the tapered surface. The angle θ of the tapered surface is about 15 to 60°. At an appropriate point in a range of a cutting allowance thickness (t) of the crop shear CS at the tapered tip end, a crop 2 is cut and removed by the crop shear CS. According to this method, any rough bar having such a thickness as cannot be cut by a conventional crop shear can be easily cut.
COPYRIGHT: (C)1982,JPO&Japio
JP8331980A 1980-06-18 1980-06-18 Method of cutting of thermally-extended rough bar Pending JPS578013A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8331980A JPS578013A (en) 1980-06-18 1980-06-18 Method of cutting of thermally-extended rough bar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8331980A JPS578013A (en) 1980-06-18 1980-06-18 Method of cutting of thermally-extended rough bar

Publications (1)

Publication Number Publication Date
JPS578013A true JPS578013A (en) 1982-01-16

Family

ID=13799099

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8331980A Pending JPS578013A (en) 1980-06-18 1980-06-18 Method of cutting of thermally-extended rough bar

Country Status (1)

Country Link
JP (1) JPS578013A (en)

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