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GB2026908B - Method of making sterring racks - Google Patents

Method of making sterring racks

Info

Publication number
GB2026908B
GB2026908B GB7925894A GB7925894A GB2026908B GB 2026908 B GB2026908 B GB 2026908B GB 7925894 A GB7925894 A GB 7925894A GB 7925894 A GB7925894 A GB 7925894A GB 2026908 B GB2026908 B GB 2026908B
Authority
GB
United Kingdom
Prior art keywords
finished
tooth
shape
rack
racks
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.)
Expired
Application number
GB7925894A
Other versions
GB2026908A (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB2026908A publication Critical patent/GB2026908A/en
Application granted granted Critical
Publication of GB2026908B publication Critical patent/GB2026908B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D3/00—Steering gears
    • B62D3/02—Steering gears mechanical
    • B62D3/12—Steering gears mechanical of rack-and-pinion type
    • B62D3/126—Steering gears mechanical of rack-and-pinion type characterised by the rack
    • 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
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Forging (AREA)

Abstract

A method of making racks for rack and pinion steering gears for ground vehicles in which a rack blank is first shaped by machining, forging or other means having teeth which have a form corresponding approximately to the form desired in the finished rack the form of each tooth in the blank corresponds to the finished shape but is generally of greater radius; the total height of the tooth being greater than that of the finished shape and the volume of each tooth is substantially the same as the finished tooth. The teeth are then converted to the finished form by cold forming or coining in a die having a shape which is the exact counterpart of the finished shape.
GB7925894A 1978-07-31 1979-07-25 Method of making sterring racks Expired GB2026908B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPD529678 1978-07-31

Publications (2)

Publication Number Publication Date
GB2026908A GB2026908A (en) 1980-02-13
GB2026908B true GB2026908B (en) 1982-11-10

Family

ID=3767646

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7925894A Expired GB2026908B (en) 1978-07-31 1979-07-25 Method of making sterring racks

Country Status (7)

Country Link
JP (1) JPS5548540A (en)
BR (1) BR7904948A (en)
DE (1) DE2930917A1 (en)
ES (1) ES483771A1 (en)
FR (1) FR2432348A1 (en)
GB (1) GB2026908B (en)
ZA (1) ZA793873B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3039010C2 (en) * 1979-10-27 1985-07-11 Jidosha Kiki Co., Ltd., Tokio/Tokyo Method for producing a rack with a Y-cross section
DE3202254C2 (en) * 1982-01-25 1986-02-20 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Method and device for producing a toothed rack
JPS58221768A (en) * 1982-06-15 1983-12-23 Nissan Motor Co Ltd Manufacture of rack for variable gear ratio rack and pinion steering
JPS597455A (en) * 1982-07-07 1984-01-14 Nissan Motor Co Ltd Manufacture of rack of variable gear ratio steering device
GB2124935B (en) * 1982-07-21 1985-08-14 Cam Gears Ltd A piston and cylinder assembly a power assisted steering gear which includes such an assembly and a method of forming a piston for such an assembly
JPS5938736U (en) * 1982-09-07 1984-03-12 株式会社クボタ Stem culm locking conveyor claw
GB2132513B (en) * 1982-12-31 1985-12-11 Cam Gears Ltd A method of forming a rack member
EP1132277B1 (en) 2000-03-09 2009-07-29 NSK Ltd., Method for manufacturing a hollow rack shaft
WO2002076653A1 (en) * 2001-03-22 2002-10-03 Bishop Innovation Limited Method and apparatus for manufacture of a forged rack
AU2002238299C1 (en) * 2001-03-22 2005-05-12 Bishop Steering Technology Pty Ltd Method and apparatus for manufacture of a forged rack
US7225541B2 (en) * 2003-10-07 2007-06-05 Chiaki Kubota Method for producing hollow rack bar
KR101393262B1 (en) * 2010-02-22 2014-05-09 주식회사 만도 Variable Gear Ratio Type Rack Bar and Steering Apparatus for Vehicle having The Same
CN109719471A (en) * 2018-12-28 2019-05-07 太仓久信精密模具股份有限公司 A kind of cold-extrusion shaping method of rack gear

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB595242A (en) * 1942-09-04 1947-12-01 Jack & Heintz Inc Method of making ring gears
GB595654A (en) * 1944-07-05 1947-12-11 Landis & Gyr Sa An improved method of and apparatus for the manufacture of the actuating pinions of the tens transfer mechanism of counting apparatus
FR1464560A (en) * 1963-10-14 1967-01-06 Caltexa Trust Reg Motor vehicle door locks and devices for their manufacture
FR2340153A1 (en) * 1976-02-05 1977-09-02 Perrier Jean Flat steel parts made by cold forging - using annealed blanks and tools providing close dimensional tolerances
DE2811616C2 (en) * 1978-03-17 1985-06-05 Arthur Ernest Mosman New South Wales Bishop Rack broaching machine

Also Published As

Publication number Publication date
FR2432348A1 (en) 1980-02-29
DE2930917C2 (en) 1991-03-21
JPS5626528B2 (en) 1981-06-19
GB2026908A (en) 1980-02-13
BR7904948A (en) 1980-04-29
ES483771A1 (en) 1980-05-16
ZA793873B (en) 1980-07-30
JPS5548540A (en) 1980-04-07
DE2930917A1 (en) 1980-02-14
FR2432348B1 (en) 1984-06-22

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940725