JPS57154342A - Production for gear of bicycle - Google Patents

Production for gear of bicycle

Info

Publication number
JPS57154342A
JPS57154342A JP3985781A JP3985781A JPS57154342A JP S57154342 A JPS57154342 A JP S57154342A JP 3985781 A JP3985781 A JP 3985781A JP 3985781 A JP3985781 A JP 3985781A JP S57154342 A JPS57154342 A JP S57154342A
Authority
JP
Japan
Prior art keywords
materials
band
shaped
productivity
pitch
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
JP3985781A
Other languages
Japanese (ja)
Inventor
Takahito Tsuru
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.)
Bridgestone Cycle Co Ltd
Original Assignee
Bridgestone Cycle 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 Bridgestone Cycle Co Ltd filed Critical Bridgestone Cycle Co Ltd
Priority to JP3985781A priority Critical patent/JPS57154342A/en
Publication of JPS57154342A publication Critical patent/JPS57154342A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/28—Making other particular articles wheels or the like gear wheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)

Abstract

PURPOSE:To enhance the yield of materials and to improve the productivity, by cutting spiral materials, where band-shaped materials are wound spirally, at every one pitch to form annular materials having teeth. CONSTITUTION:Band-shaped materials 1 such as a band-shaped steel plate or an aluminium band-shaped plate are formed into spiral materials 2 by the rolling work. Materials 2 are cut at every one pitch, and cut end parts 3 are welded to form annular materials 4. The outside circumferential part of annular materials 4 are subjected to the press work, and a tooth part 5 is knurled. By this method, materials are used effectively to improve the productivity.
JP3985781A 1981-03-19 1981-03-19 Production for gear of bicycle Pending JPS57154342A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3985781A JPS57154342A (en) 1981-03-19 1981-03-19 Production for gear of bicycle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3985781A JPS57154342A (en) 1981-03-19 1981-03-19 Production for gear of bicycle

Publications (1)

Publication Number Publication Date
JPS57154342A true JPS57154342A (en) 1982-09-24

Family

ID=12564636

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3985781A Pending JPS57154342A (en) 1981-03-19 1981-03-19 Production for gear of bicycle

Country Status (1)

Country Link
JP (1) JPS57154342A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007143829A (en) * 2005-11-28 2007-06-14 Eidai Co Ltd Structure of drawer cabinet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007143829A (en) * 2005-11-28 2007-06-14 Eidai Co Ltd Structure of drawer cabinet

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