JPS57190731A - Die for precision blanking - Google Patents

Die for precision blanking

Info

Publication number
JPS57190731A
JPS57190731A JP7607481A JP7607481A JPS57190731A JP S57190731 A JPS57190731 A JP S57190731A JP 7607481 A JP7607481 A JP 7607481A JP 7607481 A JP7607481 A JP 7607481A JP S57190731 A JPS57190731 A JP S57190731A
Authority
JP
Japan
Prior art keywords
blanking
clearance
die
punch
slanting
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
JP7607481A
Other languages
Japanese (ja)
Inventor
Takashi Nakano
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.)
Aida Engineering Ltd
Original Assignee
Aida Engineering 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 Aida Engineering Ltd filed Critical Aida Engineering Ltd
Priority to JP7607481A priority Critical patent/JPS57190731A/en
Publication of JPS57190731A publication Critical patent/JPS57190731A/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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/16—Shoulder or burr prevention, e.g. fine-blanking

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)

Abstract

PURPOSE:To obtain a die for blanking that manufactures precision blanked parts by providing a slanting part having a minute clearance between it and a punch in the cutting edge part that faces the punch. CONSTITUTION:In a die for blanking, the die 2 is placed in parallel to the main punch 1. A blanking part 2a having a clearance Cb between it and the punch 1 and a finishing part 2b having a very small clearance Ci are provided, and a slanting part 2c is formed between the blanking part 2a and fnishing part 2b. The clearance Cb is made to plate thickness (0.04-0.15) and the clearance Si is made to plate thickness (0.003-0.015). recommendable slanting angle theta of the slanting part 2c is 6-30 degrees. By this way, breaking faces generated in blanking continuously to a shearing face having a smooth surface is made to plastic flow and the whole blanked face is finished smoothly.
JP7607481A 1981-05-20 1981-05-20 Die for precision blanking Pending JPS57190731A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7607481A JPS57190731A (en) 1981-05-20 1981-05-20 Die for precision blanking

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7607481A JPS57190731A (en) 1981-05-20 1981-05-20 Die for precision blanking

Publications (1)

Publication Number Publication Date
JPS57190731A true JPS57190731A (en) 1982-11-24

Family

ID=13594652

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7607481A Pending JPS57190731A (en) 1981-05-20 1981-05-20 Die for precision blanking

Country Status (1)

Country Link
JP (1) JPS57190731A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59174233A (en) * 1983-03-24 1984-10-02 Taiho Kogyo Co Ltd Method and device for finish blanking
JPS6068118A (en) * 1983-07-08 1985-04-18 ペルフエクタ−フエルヴアルトウングスゲゼルシヤフト・ミツト・ベシユレンクテル・ハフトウング Fine blanking method of work and fine blanking tool for executing said method
JP2015193043A (en) * 2014-03-17 2015-11-05 株式会社東亜鍛工所 Manufacturing method of metal plate with hole, perforated metal plate, circumferentially perforated external gear, external gear and metal plate for cam, as well as manufacturing method of metal plate and metal plate

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS533941B2 (en) * 1973-03-01 1978-02-13

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS533941B2 (en) * 1973-03-01 1978-02-13

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59174233A (en) * 1983-03-24 1984-10-02 Taiho Kogyo Co Ltd Method and device for finish blanking
JPS6068118A (en) * 1983-07-08 1985-04-18 ペルフエクタ−フエルヴアルトウングスゲゼルシヤフト・ミツト・ベシユレンクテル・ハフトウング Fine blanking method of work and fine blanking tool for executing said method
JPH0337445B2 (en) * 1983-07-08 1991-06-05 Perufuekuta Fuerubarutsungusu Gmbh
JP2015193043A (en) * 2014-03-17 2015-11-05 株式会社東亜鍛工所 Manufacturing method of metal plate with hole, perforated metal plate, circumferentially perforated external gear, external gear and metal plate for cam, as well as manufacturing method of metal plate and metal plate

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