JPS5782019A - Method and apparatus for forming gear with flange - Google Patents

Method and apparatus for forming gear with flange

Info

Publication number
JPS5782019A
JPS5782019A JP15812980A JP15812980A JPS5782019A JP S5782019 A JPS5782019 A JP S5782019A JP 15812980 A JP15812980 A JP 15812980A JP 15812980 A JP15812980 A JP 15812980A JP S5782019 A JPS5782019 A JP S5782019A
Authority
JP
Japan
Prior art keywords
mold
gear
movable mold
sliding piece
molding
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.)
Granted
Application number
JP15812980A
Other languages
Japanese (ja)
Other versions
JPS5946777B2 (en
Inventor
Jun Irie
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.)
KOBAYASHI TEKKOSHO KK
Kobayashi Iron Works Co Ltd
Original Assignee
KOBAYASHI TEKKOSHO KK
Kobayashi Iron Works 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 KOBAYASHI TEKKOSHO KK, Kobayashi Iron Works Co Ltd filed Critical KOBAYASHI TEKKOSHO KK
Priority to JP15812980A priority Critical patent/JPS5946777B2/en
Publication of JPS5782019A publication Critical patent/JPS5782019A/en
Publication of JPS5946777B2 publication Critical patent/JPS5946777B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To mold the compact and precise gear described in the title, by arranging movable bottom part forming knobs on the internal surface of a sliding piece with intervals for forming teeth being provided, and injecting resin in the inside of the sliding piece, a movable mold, and a fixed mold.
CONSTITUTION: A plurality of bottom part forming knobs 27 which form the bottom part 14 of the gear 10 are protruded in the perpendicular direction on the side of the movable mold 23 with specified teeth molding interval 29 being provided. Steps 241 and 242 for molding flanges 111 and 112 of the gear 10 are provided on both sides of a divided sliding piece 21, whose internal surface becomes a crest molding surface 25 for teeth 13. The sliding piece 21 is coupled with the movable mold 23 so that the outside surface 27' of each knob 27 is intimately contacted with the molding surface 25. The fixing mold 22 is arranged thereon. Then the melted resin is injected in the inside of the piece 21, the fixed mold 22, and the movable mold 23 and the resin is cured. Thereafter the movable mold 23 is drawn in the axial direction of the knob 27, the piece 21 is separated in the right and left directions, and the gear 10 with the flanges is obtained.
COPYRIGHT: (C)1982,JPO&Japio
JP15812980A 1980-11-12 1980-11-12 Method and device for forming flanged gears Expired JPS5946777B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15812980A JPS5946777B2 (en) 1980-11-12 1980-11-12 Method and device for forming flanged gears

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15812980A JPS5946777B2 (en) 1980-11-12 1980-11-12 Method and device for forming flanged gears

Publications (2)

Publication Number Publication Date
JPS5782019A true JPS5782019A (en) 1982-05-22
JPS5946777B2 JPS5946777B2 (en) 1984-11-14

Family

ID=15664914

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15812980A Expired JPS5946777B2 (en) 1980-11-12 1980-11-12 Method and device for forming flanged gears

Country Status (1)

Country Link
JP (1) JPS5946777B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002173041A (en) * 2000-09-12 2002-06-18 Koyo Seiko Co Ltd Electric power steering device and manufacturing method for worm wheel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002173041A (en) * 2000-09-12 2002-06-18 Koyo Seiko Co Ltd Electric power steering device and manufacturing method for worm wheel

Also Published As

Publication number Publication date
JPS5946777B2 (en) 1984-11-14

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