JPS5662642A - Working method of pedestal type hinge by cold forging - Google Patents

Working method of pedestal type hinge by cold forging

Info

Publication number
JPS5662642A
JPS5662642A JP13732579A JP13732579A JPS5662642A JP S5662642 A JPS5662642 A JP S5662642A JP 13732579 A JP13732579 A JP 13732579A JP 13732579 A JP13732579 A JP 13732579A JP S5662642 A JPS5662642 A JP S5662642A
Authority
JP
Japan
Prior art keywords
forming
shaft
parts
pierced
hinges
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
JP13732579A
Other languages
Japanese (ja)
Inventor
Tatatomi Yamakawa
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.)
YAMAKAWA KOGYO KK
Original Assignee
YAMAKAWA KOGYO 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 YAMAKAWA KOGYO KK filed Critical YAMAKAWA KOGYO KK
Priority to JP13732579A priority Critical patent/JPS5662642A/en
Publication of JPS5662642A publication Critical patent/JPS5662642A/en
Pending legal-status Critical Current

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  • Forging (AREA)

Abstract

PURPOSE: To improve productivity and material yield by forging projectiosn at solid metal parts, and piercing these thereby forming shaft insertion holes.
CONSTITUTION: A hinge work of a short square bar material 4 is used and is cold forged by means of an upper die 5 and lower die provided with shaft cylindrical part forming die parts 5a on the top and under surfaces in the longitudinal direction, whereby a base plate 4a for forming mounting seats of hinges is swaged. At the same time, projecting pats 4b for forming the shaft cylinders of hinges are molded on the top surface of the base plate 4a at the thickness of the short square bar material 4 to obtain a primary work 4A. Thence, the amorphous swaged parts 4c are removed to a fixed shape, and shaft insertion holes 4d are pierced by drilling or the like to the projecting parts 4b for forming shaft cylinder, whereby the pedestal type hine 4B provided with the mounting seat plates 4a' and shaft cylinders 4b' is obtained. The mounting holes 4e of the mounting seat plates 4a' are pierced in the above-mentioned working process or on site.
COPYRIGHT: (C)1981,JPO&Japio
JP13732579A 1979-10-24 1979-10-24 Working method of pedestal type hinge by cold forging Pending JPS5662642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13732579A JPS5662642A (en) 1979-10-24 1979-10-24 Working method of pedestal type hinge by cold forging

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13732579A JPS5662642A (en) 1979-10-24 1979-10-24 Working method of pedestal type hinge by cold forging

Publications (1)

Publication Number Publication Date
JPS5662642A true JPS5662642A (en) 1981-05-28

Family

ID=15196029

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13732579A Pending JPS5662642A (en) 1979-10-24 1979-10-24 Working method of pedestal type hinge by cold forging

Country Status (1)

Country Link
JP (1) JPS5662642A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49125263A (en) * 1973-04-06 1974-11-30

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49125263A (en) * 1973-04-06 1974-11-30

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