JPS57204366A - Rack and its manufacturing method - Google Patents

Rack and its manufacturing method

Info

Publication number
JPS57204366A
JPS57204366A JP8846681A JP8846681A JPS57204366A JP S57204366 A JPS57204366 A JP S57204366A JP 8846681 A JP8846681 A JP 8846681A JP 8846681 A JP8846681 A JP 8846681A JP S57204366 A JPS57204366 A JP S57204366A
Authority
JP
Japan
Prior art keywords
tooth surface
primary
rack
relief groove
primary tooth
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
JP8846681A
Other languages
Japanese (ja)
Inventor
Chiaki Yabe
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.)
JIDOSHA KIKI KK
Jidosha Kiki Co Ltd
Original Assignee
JIDOSHA KIKI KK
Jidosha Kiki 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 JIDOSHA KIKI KK, Jidosha Kiki Co Ltd filed Critical JIDOSHA KIKI KK
Priority to JP8846681A priority Critical patent/JPS57204366A/en
Publication of JPS57204366A publication Critical patent/JPS57204366A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/26—Racks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/767—Toothed racks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F15/00—Methods or machines for making gear wheels of special kinds not covered by groups B23F7/00 - B23F13/00

Landscapes

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

Abstract

PURPOSE:To improve working accuracy of the effective engaging portion of a rack with a pinion by disposing a relief groove for a finish machining tool along the root of the rack. CONSTITUTION:A rack material is molded to form a substantially V-shaped primary tooth surface 8 indicated by an imaginary line. The depth of the primary tooth surface 8 is larger than the grain depth of cut worked in a conventional way. Subsequently, a secondary tooth surface 9 is molded. The secondary tooth surface 9 presents a final tooth form and has an easier grade than the primary tooth surface 8, the grain depth of cut thereof being smaller than that of the primary tooth surface 8. Therefore, in the vicinity of the root, a square portion 10 is formed between the primary and secondary tooth surfaces 8, 9, and the bottom of the primary tooth surface 8 is a relief groove 11. In case of working near the bottom of the secondary tooth surface 9, the relief groove 11 keeps a cutting tool from contacting the primary tooth surface 8, which can reduce cutting resistance and improve working accuracy.
JP8846681A 1981-06-09 1981-06-09 Rack and its manufacturing method Pending JPS57204366A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8846681A JPS57204366A (en) 1981-06-09 1981-06-09 Rack and its manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8846681A JPS57204366A (en) 1981-06-09 1981-06-09 Rack and its manufacturing method

Publications (1)

Publication Number Publication Date
JPS57204366A true JPS57204366A (en) 1982-12-15

Family

ID=13943546

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8846681A Pending JPS57204366A (en) 1981-06-09 1981-06-09 Rack and its manufacturing method

Country Status (1)

Country Link
JP (1) JPS57204366A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009072841A (en) * 2007-09-19 2009-04-09 Nsk Ltd Manufacturing method for worm wheel and worm reduction gear
JP2013039667A (en) * 2012-09-13 2013-02-28 Nsk Ltd Method of manufacturing worm wheel, and worm reducer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009072841A (en) * 2007-09-19 2009-04-09 Nsk Ltd Manufacturing method for worm wheel and worm reduction gear
JP2013039667A (en) * 2012-09-13 2013-02-28 Nsk Ltd Method of manufacturing worm wheel, and worm reducer

Similar Documents

Publication Publication Date Title
JPS56114621A (en) Wire-cut machining method by electric conduction
GB2234197B (en) An apparatus for,and a method of,cutting a blank
GB1196667A (en) Improvements in or relating to Cutting Tools
JPS57204366A (en) Rack and its manufacturing method
JPS5656336A (en) Machining method of gear
ES279732U (en) Cemented carbide cutting tools and processes for making and using
JPS6440208A (en) Machining method for preventing burr from occurring
JPS57187136A (en) Molding tool
DE3069413D1 (en) Tool and method for precision cutting
JPS57173404A (en) Precision turning method of groove
SU127561A1 (en) Cutters for the rough and clean cutting bevel gears
SU1057184A1 (en) Machining
SU1407707A1 (en) Gear-cutting head
JPS5565029A (en) Hob cutter
JPS5721242A (en) Machining method for work
GB966754A (en) Improvements in or relating to a method of milling with carbide-tipped milling cutters
JPS5695518A (en) Inserted tooth cutter
GB1493028A (en) Cutting tool for use in machine tools
GB2090551B (en) Method of machining a workpiece with an edge-type rotary cutting tool
Ber et al. Some New Conceptions of the Technology of Chip Breakers
JPS55164420A (en) Chamfering tool for side rim portion of surface of gear
Rohmert et al. Precision Machining of Hardened Spiral Bevel Gears by Hobbing
JPS5524869A (en) Cutting method having excellent cut chip disposal property
JPS5482345A (en) Finisher for gear
JPS6434605A (en) Cutting tool