JPS6418523A - Forming die - Google Patents

Forming die

Info

Publication number
JPS6418523A
JPS6418523A JP17320587A JP17320587A JPS6418523A JP S6418523 A JPS6418523 A JP S6418523A JP 17320587 A JP17320587 A JP 17320587A JP 17320587 A JP17320587 A JP 17320587A JP S6418523 A JPS6418523 A JP S6418523A
Authority
JP
Japan
Prior art keywords
die
product
parabolic shape
upper face
deformed
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
JP17320587A
Other languages
Japanese (ja)
Inventor
Hideho Ariyoshi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP17320587A priority Critical patent/JPS6418523A/en
Publication of JPS6418523A publication Critical patent/JPS6418523A/en
Pending legal-status Critical Current

Links

Landscapes

  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

PURPOSE:To form the product of high accuracy whose upper face is flat and having less dispersion in the bending angle by providing the downward slope in a smooth parabolic shape on a die and stripper surface over the die peripheral edge from the plane part. CONSTITUTION:Curved faces 15, 16 in a parabolic shape are formed respectively on the surface of a die 10 and stripper plate 11 in a press forming die. The material to be worked 12 is formed in un upward parabolic shape inside the die, but a springback is caused from this shape on a product, acting on a corner part 17 as an upward moment and the product upper face is deformed in a downward parabolic shape. As a result the deformed amt. is offset and the bending product having a flat upper face is obtd.
JP17320587A 1987-07-10 1987-07-10 Forming die Pending JPS6418523A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17320587A JPS6418523A (en) 1987-07-10 1987-07-10 Forming die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17320587A JPS6418523A (en) 1987-07-10 1987-07-10 Forming die

Publications (1)

Publication Number Publication Date
JPS6418523A true JPS6418523A (en) 1989-01-23

Family

ID=15956061

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17320587A Pending JPS6418523A (en) 1987-07-10 1987-07-10 Forming die

Country Status (1)

Country Link
JP (1) JPS6418523A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6117806A (en) * 1996-10-25 2000-09-12 Ngk Spark Plug Co., Ltd. Dielectric material, a method for producing the same and a dielectric resonator device comprising same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6117806A (en) * 1996-10-25 2000-09-12 Ngk Spark Plug Co., Ltd. Dielectric material, a method for producing the same and a dielectric resonator device comprising same

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