JPS5682128A - Forming method of mold for injection molding - Google Patents

Forming method of mold for injection molding

Info

Publication number
JPS5682128A
JPS5682128A JP15724779A JP15724779A JPS5682128A JP S5682128 A JPS5682128 A JP S5682128A JP 15724779 A JP15724779 A JP 15724779A JP 15724779 A JP15724779 A JP 15724779A JP S5682128 A JPS5682128 A JP S5682128A
Authority
JP
Japan
Prior art keywords
hole
core
cut
mold
block
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.)
Granted
Application number
JP15724779A
Other languages
Japanese (ja)
Other versions
JPS5759059B2 (en
Inventor
Junichi Takada
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP15724779A priority Critical patent/JPS5682128A/en
Publication of JPS5682128A publication Critical patent/JPS5682128A/en
Publication of JPS5759059B2 publication Critical patent/JPS5759059B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
    • B23H9/12—Forming parts of complementary shape, e.g. punch-and-die

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

PURPOSE:To reduce the production costs of a mold and improve the products in quality by forming a cavity mold body and a cut-out core at the same time and using said core as both the cavity bottom and a knockout. CONSTITUTION:Through a material block 1 of a given shape, a pilot hole 2 is made by using a drill or the like, and an electrode wire 3 of brass or the like is passed through said hole. By electric discharge, the metal texture is cut to bore a hole in the block 1 along a scribed line 4. On completion of boring, the block 1 is divided into a cavity mold body 6 having a tapered hole 5 and cut-out core 7 having a tapered outer surface. Then the inner surface of the hole 5 and the outer surface of the core 7 are ground. The existence of the cut clearance produced between the body 6 and the core 7 allows the core 7 to fall into the hole 5. Said method permits the production costs of the mold to be reduced and improvement in the quality of the products.
JP15724779A 1979-12-04 1979-12-04 Forming method of mold for injection molding Granted JPS5682128A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15724779A JPS5682128A (en) 1979-12-04 1979-12-04 Forming method of mold for injection molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15724779A JPS5682128A (en) 1979-12-04 1979-12-04 Forming method of mold for injection molding

Publications (2)

Publication Number Publication Date
JPS5682128A true JPS5682128A (en) 1981-07-04
JPS5759059B2 JPS5759059B2 (en) 1982-12-13

Family

ID=15645453

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15724779A Granted JPS5682128A (en) 1979-12-04 1979-12-04 Forming method of mold for injection molding

Country Status (1)

Country Link
JP (1) JPS5682128A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4571477A (en) * 1983-06-09 1986-02-18 Ag Fur Industrielle Elektronik Agie Method for securing cut pieces in spark erosive cutting
JPH0366522A (en) * 1989-07-31 1991-03-22 Hashimoto Forming Ind Co Ltd Manufacture of metal member having projecting part
JPH0366523A (en) * 1989-07-31 1991-03-22 Hashimoto Forming Ind Co Ltd Manufacture of metal member having recessed part

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4571477A (en) * 1983-06-09 1986-02-18 Ag Fur Industrielle Elektronik Agie Method for securing cut pieces in spark erosive cutting
US4746782A (en) * 1983-06-09 1988-05-24 Ag Fur Industrielle Elektronik Agie, Losone B. Locarno Method for securing cut pieces in spark erosive cutting
JPH0366522A (en) * 1989-07-31 1991-03-22 Hashimoto Forming Ind Co Ltd Manufacture of metal member having projecting part
JPH0366523A (en) * 1989-07-31 1991-03-22 Hashimoto Forming Ind Co Ltd Manufacture of metal member having recessed part

Also Published As

Publication number Publication date
JPS5759059B2 (en) 1982-12-13

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