JPS6448601A - Manufacture of plate-like electrode for electric discharge machining - Google Patents

Manufacture of plate-like electrode for electric discharge machining

Info

Publication number
JPS6448601A
JPS6448601A JP20262787A JP20262787A JPS6448601A JP S6448601 A JPS6448601 A JP S6448601A JP 20262787 A JP20262787 A JP 20262787A JP 20262787 A JP20262787 A JP 20262787A JP S6448601 A JPS6448601 A JP S6448601A
Authority
JP
Japan
Prior art keywords
stock
plate
roll
projected rib
sides
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
JP20262787A
Other languages
Japanese (ja)
Inventor
Hiroshi Fukuda
Kanji Watanabe
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.)
Kawai Musical Instrument Manufacturing Co Ltd
Original Assignee
Kawai Musical Instrument Manufacturing 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 Kawai Musical Instrument Manufacturing Co Ltd filed Critical Kawai Musical Instrument Manufacturing Co Ltd
Priority to JP20262787A priority Critical patent/JPS6448601A/en
Publication of JPS6448601A publication Critical patent/JPS6448601A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/0805—Flat bars, i.e. having a substantially rectangular cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Metal Rolling (AREA)

Abstract

PURPOSE:To form a plate-like electrode having a thick part and a thin part whose thickness reduces from both sides by pressing a long-sized flat plate stock having a rectangular section between a flat plate-like die where an acute angle projected rib is formed on the plate face and a press roll provided with a projected rib in the peripheral direction. CONSTITUTION:A projected rib 3 of a die 2 consists of an edge 6 which gradually rises from a top end 3a and then parallels a plate face 4 and two tapered faces 7, 7 on the right and left sides of the line 6. A peripheral projected rib 10 of a press roll 5 consists of an annular edge line 8 corresponding to the line 6 and right and left tapered faces 9, 9. The roll 5 is installed to freely approach or leave the plate face 4. In the case of pressing, the roll 5 reciprocates by a distance (l) along the face 4 and presses a stock 1. When the stock 1 is transferred every rotation of the roll 5, the central part of the stock 1 held by the ribs 3 and 10 is pressed and spread in side directions to be formed into a long-sized stock 1a. The stock 1a is divided into two pieces at the central part and the stock 1a is cut by a proper length to obtain plate-like electrodes having a thick part and a thin part whose thickness is reduced from both sides.
JP20262787A 1987-08-15 1987-08-15 Manufacture of plate-like electrode for electric discharge machining Pending JPS6448601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20262787A JPS6448601A (en) 1987-08-15 1987-08-15 Manufacture of plate-like electrode for electric discharge machining

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20262787A JPS6448601A (en) 1987-08-15 1987-08-15 Manufacture of plate-like electrode for electric discharge machining

Publications (1)

Publication Number Publication Date
JPS6448601A true JPS6448601A (en) 1989-02-23

Family

ID=16460485

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20262787A Pending JPS6448601A (en) 1987-08-15 1987-08-15 Manufacture of plate-like electrode for electric discharge machining

Country Status (1)

Country Link
JP (1) JPS6448601A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6337369B1 (en) * 1997-03-19 2002-01-08 Kuraray Co., Ltd. Polarizing film

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4832763A (en) * 1971-08-31 1973-05-02
JPS5236512A (en) * 1975-09-18 1977-03-19 Nippon Stainless Steel Co Ltd Two phases (ferritic and austenitic) stainless steel of high hardness

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4832763A (en) * 1971-08-31 1973-05-02
JPS5236512A (en) * 1975-09-18 1977-03-19 Nippon Stainless Steel Co Ltd Two phases (ferritic and austenitic) stainless steel of high hardness

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6337369B1 (en) * 1997-03-19 2002-01-08 Kuraray Co., Ltd. Polarizing film

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