JPS57149041A - Method for punching deformed hole by press and work punched in this method - Google Patents

Method for punching deformed hole by press and work punched in this method

Info

Publication number
JPS57149041A
JPS57149041A JP3440581A JP3440581A JPS57149041A JP S57149041 A JPS57149041 A JP S57149041A JP 3440581 A JP3440581 A JP 3440581A JP 3440581 A JP3440581 A JP 3440581A JP S57149041 A JPS57149041 A JP S57149041A
Authority
JP
Japan
Prior art keywords
work
press
hole
blade rod
prepared hole
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
JP3440581A
Other languages
Japanese (ja)
Inventor
Takezo Hiraoka
Hidenori Mukaida
Hatsuji Takei
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.)
HIRAOKA SEISAKUSHO KK
Original Assignee
HIRAOKA SEISAKUSHO KK
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 HIRAOKA SEISAKUSHO KK filed Critical HIRAOKA SEISAKUSHO KK
Priority to JP3440581A priority Critical patent/JPS57149041A/en
Publication of JPS57149041A publication Critical patent/JPS57149041A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/10—Piercing billets

Landscapes

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

Abstract

PURPOSE:To punch a hole with required size and to form accurately with a short-time preparation work, by press-fitting a blade rod, which is attached to a pressure plate, to a prepared hole of work when a deformed hole is punched by a press. CONSTITUTION:The lower part of a work 3 is received in a receiving part 2 of a base 1, and a press plate 4 is slided, and screws 5' are used to tighten a tightening tool 5 to press plate 4, thus fixing the work 3 to the base 1. When a working press 6 is caused to fall by a mechanical press operation to press-fit a blade rod 7 to a prepared hole 3' of the work 3, a hole is formed along the form of the blade rod 7 on the work 3. If the stroke of the blade rod 7 is set to a short length preliminarily, the blade rod 7 is stopped halfway in the prepared hole 3' of the work 3. By this method, a stop step part due to the chip left in a prescribed position of the prepared hole 3' of the work 3 is formed automatically.
JP3440581A 1981-03-09 1981-03-09 Method for punching deformed hole by press and work punched in this method Pending JPS57149041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3440581A JPS57149041A (en) 1981-03-09 1981-03-09 Method for punching deformed hole by press and work punched in this method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3440581A JPS57149041A (en) 1981-03-09 1981-03-09 Method for punching deformed hole by press and work punched in this method

Publications (1)

Publication Number Publication Date
JPS57149041A true JPS57149041A (en) 1982-09-14

Family

ID=12413270

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3440581A Pending JPS57149041A (en) 1981-03-09 1981-03-09 Method for punching deformed hole by press and work punched in this method

Country Status (1)

Country Link
JP (1) JPS57149041A (en)

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