JPS5618156A - Manufacture of ring gear - Google Patents

Manufacture of ring gear

Info

Publication number
JPS5618156A
JPS5618156A JP9259779A JP9259779A JPS5618156A JP S5618156 A JPS5618156 A JP S5618156A JP 9259779 A JP9259779 A JP 9259779A JP 9259779 A JP9259779 A JP 9259779A JP S5618156 A JPS5618156 A JP S5618156A
Authority
JP
Japan
Prior art keywords
ring
blank material
flat
ring gear
manufacture
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
JP9259779A
Other languages
Japanese (ja)
Inventor
Mikizo Akamatsu
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.)
SAKAE RINGIYOU KK
SAKAE RINGYO KK
Original Assignee
SAKAE RINGIYOU KK
SAKAE RINGYO 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 SAKAE RINGIYOU KK, SAKAE RINGYO KK filed Critical SAKAE RINGIYOU KK
Priority to JP9259779A priority Critical patent/JPS5618156A/en
Publication of JPS5618156A publication Critical patent/JPS5618156A/en
Pending legal-status Critical Current

Links

Landscapes

  • Gears, Cams (AREA)

Abstract

PURPOSE: To spare the material for ring gears and manufacture them with a high efficiency by placing a wire material bent in a ring shape, in a ring-shaped groove formed in a press mold, and obtaining a ring gear formed by pressing the wire material into a flat shape.
CONSTITUTION: In the manufacture of the ring gear, the wire having circular section is bent in ring shape, and connected portions 10 at both ends are welded together to form the first blank material 11. Then, the first blank material 11 is placed on a ring-shaped groove of a flat and rectangular section, formed on the upper surface of a lower mold 12 of the press mold, an upper mold 14 having a flat lower surface is caused to descend, the first blank material 11 is pressed thereby to form the second rectangular and ring-shaped blank material 15 of a flat section. The second blank material 15 is processed similarly as heretofore, and teeth 6 are formed in the outer periphery and a fitted part 7 and a fitting hole 7a are respectively formed to obtain a desired ring gear. Upon this occasion, only hatched parts 15a and 15b become punched scraps and the quantity thereof can be made miminum.
COPYRIGHT: (C)1981,JPO&Japio
JP9259779A 1979-07-23 1979-07-23 Manufacture of ring gear Pending JPS5618156A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9259779A JPS5618156A (en) 1979-07-23 1979-07-23 Manufacture of ring gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9259779A JPS5618156A (en) 1979-07-23 1979-07-23 Manufacture of ring gear

Publications (1)

Publication Number Publication Date
JPS5618156A true JPS5618156A (en) 1981-02-20

Family

ID=14058852

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9259779A Pending JPS5618156A (en) 1979-07-23 1979-07-23 Manufacture of ring gear

Country Status (1)

Country Link
JP (1) JPS5618156A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5020558A (en) * 1973-06-25 1975-03-04

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5020558A (en) * 1973-06-25 1975-03-04

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