JPS6462226A - Method for forming gimlet form in trimming die - Google Patents

Method for forming gimlet form in trimming die

Info

Publication number
JPS6462226A
JPS6462226A JP21676687A JP21676687A JPS6462226A JP S6462226 A JPS6462226 A JP S6462226A JP 21676687 A JP21676687 A JP 21676687A JP 21676687 A JP21676687 A JP 21676687A JP S6462226 A JPS6462226 A JP S6462226A
Authority
JP
Japan
Prior art keywords
die
gimlet
trimming
forming
clearance
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
JP21676687A
Other languages
Japanese (ja)
Inventor
Katsumi Sato
Yoshihiro Osumi
Kiyoteru Asai
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.)
Hitachi Ltd
Hitachi Mito Engineering Co Ltd
Original Assignee
Hitachi Ltd
Hitachi Mito Engineering 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 Hitachi Ltd, Hitachi Mito Engineering Co Ltd filed Critical Hitachi Ltd
Priority to JP21676687A priority Critical patent/JPS6462226A/en
Publication of JPS6462226A publication Critical patent/JPS6462226A/en
Pending legal-status Critical Current

Links

Landscapes

  • Punching Or Piercing (AREA)

Abstract

PURPOSE:To reduce the number of stages forming a gimlet-shaped working stock from a plate stock by providing the clearance of the female die of a trimming die for the male die in non-parallel. CONSTITUTION:A square gimlet forming trimming die is composed of the male die 6 consisting of the upper holder 5 holding the stripper 3, etc., pressing via an elastic body 4, the punch 2 pressing a plate stock 1 and the plate stock 1, and the female die 9 consisting of the lower holder 8 supporting the die 7 forming a slope surface. The clearance of the punch 2 of this male die 6 and the die 7 of the female die 9 is formed in non-parallel. This non-parallel can be formed by varying the clearance in linear shape or circular arcuated shape. A slope is thus formed by positively generating a roll over due to punching and the square gimlet 10 capable of obtg. the final shape without executing coining is formed. Also said square gimlet 10 is preferably formed in the length longer than and less than two times the side along the trimming at its side orthogonal with the trimming of the bottom face.
JP21676687A 1987-08-31 1987-08-31 Method for forming gimlet form in trimming die Pending JPS6462226A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21676687A JPS6462226A (en) 1987-08-31 1987-08-31 Method for forming gimlet form in trimming die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21676687A JPS6462226A (en) 1987-08-31 1987-08-31 Method for forming gimlet form in trimming die

Publications (1)

Publication Number Publication Date
JPS6462226A true JPS6462226A (en) 1989-03-08

Family

ID=16693571

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21676687A Pending JPS6462226A (en) 1987-08-31 1987-08-31 Method for forming gimlet form in trimming die

Country Status (1)

Country Link
JP (1) JPS6462226A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009127654A (en) * 2007-11-20 2009-06-11 Jatco Ltd Torque converter and press device
US20130114984A1 (en) * 2011-11-09 2013-05-09 Canon Finetech Inc. Sheet punching device and image forming apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009127654A (en) * 2007-11-20 2009-06-11 Jatco Ltd Torque converter and press device
US20130114984A1 (en) * 2011-11-09 2013-05-09 Canon Finetech Inc. Sheet punching device and image forming apparatus
US10131070B2 (en) * 2011-11-09 2018-11-20 Canon Finetech Nisca Inc. Sheet punching device and image forming apparatus

Similar Documents

Publication Publication Date Title
EP0815979A3 (en) Method of punching a punch guide hole in a blank holder of a punch assembly, a punch assembly and a blank holder
FR2396601A1 (en) STAMPING PROCESS, MACHINE AND TOOLS FOR IMPLEMENTING THIS PROCESS
MY103934A (en) Method and apparatus for forming container with profiled bottom
JPS6462226A (en) Method for forming gimlet form in trimming die
JPS6422421A (en) Composite die device
ES488181A1 (en) Flattening or shaping sheet metal parts
JPS5650743A (en) Method and device of forming shaft with center hole
JPS5570426A (en) Punching die for helical gear
JPS56134029A (en) Holder of press
JPS57195552A (en) Method for press-forming piston in former
JPS57206521A (en) Pipe forming device
JPS5764498A (en) Triple forming method and triple forming device
JPS55156633A (en) Punch and its production
ES489569A1 (en) Bar of soap and process for its production.
ES2011496A6 (en) Forming process for producing sharp corners in sheet metal and apparatus useful therein
JPS6411095A (en) Production of granular solder
IT8847990A0 (en) DEVICE FOR ADJUSTING THE HEIGHT OF THE PUNCH OF A PUNCHING MACHINE
JPS6443972A (en) High output storage battery
JPS5666324A (en) Press die
JPS5290404A (en) Dies for powder forming
JPS62166020U (en)
JPS6471919A (en) Formation of fixing seat of pc steel wire in end plate for concrete pile
JPS57142736A (en) Cold forging method
JPS6422420A (en) Method and device for working thin plate stock
JPS54124585A (en) Manufacture of piece-holding plate