FR2432348A1 - METHOD OF MANUFACTURING RACK FOR STEERING MECHANISMS - Google Patents

METHOD OF MANUFACTURING RACK FOR STEERING MECHANISMS

Info

Publication number
FR2432348A1
FR2432348A1 FR7919569A FR7919569A FR2432348A1 FR 2432348 A1 FR2432348 A1 FR 2432348A1 FR 7919569 A FR7919569 A FR 7919569A FR 7919569 A FR7919569 A FR 7919569A FR 2432348 A1 FR2432348 A1 FR 2432348A1
Authority
FR
France
Prior art keywords
teeth
finished
steering mechanisms
rack
blank
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
FR7919569A
Other languages
French (fr)
Other versions
FR2432348B1 (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 FR2432348A1 publication Critical patent/FR2432348A1/en
Application granted granted Critical
Publication of FR2432348B1 publication Critical patent/FR2432348B1/fr
Granted 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

L'invention concerne un procédé de fabrication de crémaillères pour mécanismes de direction. Le procédé comprend la formation d'une ébauche de crémaillère par usinage, forgeage, ..., l'ébauche ayant des dents dont la forme correspond approximativement à celle des dents voulues pour la crémaillère finie, le pied des dents ayant un rayon supérieur à celui de la forme finie, la hauteur totale des dents étant supérieure à celle des dents finies et le volume des dents dégrossies et des dents terminées étant sensiblement le même. Les dents sont mises à la forme finale par estampage ou façonnage à froid dans une matrice dont la configuration correspond à l'image exacte en creux de la forme finale voulue. Application à la fabrication des crémaillères des mécanismes de direction des véhicules terrestres.The invention relates to a method of manufacturing racks for steering mechanisms. The method comprises forming a rack blank by machining, forging, ..., the blank having teeth whose shape approximately corresponds to that of the teeth desired for the finished rack, the root of the teeth having a radius greater than that of the finished shape, the total height of the teeth being greater than that of the finished teeth and the volume of the roughened teeth and of the finished teeth being substantially the same. Teeth are finalized by stamping or cold forming in a die whose configuration matches the exact recessed image of the desired final shape. Application to the manufacture of racks for the steering mechanisms of land vehicles.

FR7919569A 1978-07-31 1979-07-30 METHOD OF MANUFACTURING RACK FOR STEERING MECHANISMS Granted FR2432348A1 (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
FR2432348A1 true FR2432348A1 (en) 1980-02-29
FR2432348B1 FR2432348B1 (en) 1984-06-22

Family

ID=3767646

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7919569A Granted FR2432348A1 (en) 1978-07-31 1979-07-30 METHOD OF MANUFACTURING RACK FOR STEERING MECHANISMS

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538729A1 (en) * 1982-12-31 1984-07-06 Trw Cam Gears Ltd METHOD FOR MANUFACTURING A RACK ENHANCEMENT

Families Citing this family (12)

* 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
EP1132277B1 (en) 2000-03-09 2009-07-29 NSK Ltd., Method for manufacturing a hollow rack shaft
AU2002238299C1 (en) * 2001-03-22 2005-05-12 Bishop Steering Technology Pty Ltd Method and apparatus for manufacture of a forged rack
CA2439745A1 (en) * 2001-03-22 2002-10-03 Bishop Innovation Limited 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

Citations (4)

* 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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2811616C2 (en) * 1978-03-17 1985-06-05 Arthur Ernest Mosman New South Wales Bishop Rack broaching machine

Patent Citations (4)

* 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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538729A1 (en) * 1982-12-31 1984-07-06 Trw Cam Gears Ltd METHOD FOR MANUFACTURING A RACK ENHANCEMENT

Also Published As

Publication number Publication date
DE2930917C2 (en) 1991-03-21
ZA793873B (en) 1980-07-30
DE2930917A1 (en) 1980-02-14
FR2432348B1 (en) 1984-06-22
JPS5548540A (en) 1980-04-07
BR7904948A (en) 1980-04-29
ES483771A1 (en) 1980-05-16
GB2026908A (en) 1980-02-13
GB2026908B (en) 1982-11-10
JPS5626528B2 (en) 1981-06-19

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Legal Events

Date Code Title Description
ST Notification of lapse