JPS57171524A - Formation for jumping disc - Google Patents

Formation for jumping disc

Info

Publication number
JPS57171524A
JPS57171524A JP5710981A JP5710981A JPS57171524A JP S57171524 A JPS57171524 A JP S57171524A JP 5710981 A JP5710981 A JP 5710981A JP 5710981 A JP5710981 A JP 5710981A JP S57171524 A JPS57171524 A JP S57171524A
Authority
JP
Japan
Prior art keywords
punch
disc
formation
jumping
hemispheric
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
JP5710981A
Other languages
Japanese (ja)
Inventor
Shuichi Tsukagoshi
Hideaki Masaki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5710981A priority Critical patent/JPS57171524A/en
Publication of JPS57171524A publication Critical patent/JPS57171524A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

PURPOSE:To manufacture a jumping disc with narrow hysteresis for rapid inversion and return at a set temperature, by providing two types of hemispheric faces in the tip shape as a molding punch at the center and the external circumference. CONSTITUTION:A punch is combined with two types of hemispheric faces at the center and the external circumference. A dish-shaped jumping disc with narrow hysteresis of rapid inversion and return at a set temperature can be manufactured without distortion by pressing and molding bimetal through the use of the punch.
JP5710981A 1981-04-17 1981-04-17 Formation for jumping disc Pending JPS57171524A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5710981A JPS57171524A (en) 1981-04-17 1981-04-17 Formation for jumping disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5710981A JPS57171524A (en) 1981-04-17 1981-04-17 Formation for jumping disc

Publications (1)

Publication Number Publication Date
JPS57171524A true JPS57171524A (en) 1982-10-22

Family

ID=13046345

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5710981A Pending JPS57171524A (en) 1981-04-17 1981-04-17 Formation for jumping disc

Country Status (1)

Country Link
JP (1) JPS57171524A (en)

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