JPS5779534A - Shift fork - Google Patents

Shift fork

Info

Publication number
JPS5779534A
JPS5779534A JP15404780A JP15404780A JPS5779534A JP S5779534 A JPS5779534 A JP S5779534A JP 15404780 A JP15404780 A JP 15404780A JP 15404780 A JP15404780 A JP 15404780A JP S5779534 A JPS5779534 A JP S5779534A
Authority
JP
Japan
Prior art keywords
fork
shift fork
surface roughness
5murz
plating film
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
JP15404780A
Other languages
Japanese (ja)
Inventor
Shinobu Sasaki
Muneya Takagi
Minoru Kawasaki
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP15404780A priority Critical patent/JPS5779534A/en
Publication of JPS5779534A publication Critical patent/JPS5779534A/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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/32—Gear shift yokes, e.g. shift forks
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/32—Gear shift yokes, e.g. shift forks
    • F16H2063/324—Gear shift yokes, e.g. shift forks characterised by slide shoes, or similar means to transfer shift force to sleeve

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

PURPOSE:To improve wear resistance by forming a chromium plating film on the sliding surface of the pawl part of a fork and by specifying it surface roughness. CONSTITUTION:The pawl part of a shift fork made of cast iron is plated with chromium, and the coating surface is polished with a buff to <=5muRz surface roughness. First, the shift fork is cast with a known material and cut to 10muRz surface rounghness. Then, only the pawl parts 2 and 3 of the fork 1 are dipped in a fluoride bath of chromic acid anhydride, sulfuric acid, and silicofluoride and left at about 50 degrees for an 1-3/2hr. Thus, the plating film thickness is 20-30mum and film hardness is about 850-900Hv, so buff polishing is performed with abrasive grains having >=#250 grain size to obtain <=5muRz surface roughness.
JP15404780A 1980-11-01 1980-11-01 Shift fork Pending JPS5779534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15404780A JPS5779534A (en) 1980-11-01 1980-11-01 Shift fork

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15404780A JPS5779534A (en) 1980-11-01 1980-11-01 Shift fork

Publications (1)

Publication Number Publication Date
JPS5779534A true JPS5779534A (en) 1982-05-18

Family

ID=15575750

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15404780A Pending JPS5779534A (en) 1980-11-01 1980-11-01 Shift fork

Country Status (1)

Country Link
JP (1) JPS5779534A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2537302A1 (en) * 1982-12-06 1984-06-08 Peugeot Device for guiding a gearbox fork
US4995281A (en) * 1989-07-31 1991-02-26 Ford Motor Company Lightweight rocker arm
FR2666392A1 (en) * 1990-09-05 1992-03-06 Bronze Acior Sa FORK OF GEARBOX OF MOTOR VEHICLE.
WO2013007416A1 (en) * 2011-07-14 2013-01-17 Schaeffler Technologies AG & Co. KG Shift fork for a motor vehicle transmission

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2537302A1 (en) * 1982-12-06 1984-06-08 Peugeot Device for guiding a gearbox fork
US4995281A (en) * 1989-07-31 1991-02-26 Ford Motor Company Lightweight rocker arm
FR2666392A1 (en) * 1990-09-05 1992-03-06 Bronze Acior Sa FORK OF GEARBOX OF MOTOR VEHICLE.
WO2013007416A1 (en) * 2011-07-14 2013-01-17 Schaeffler Technologies AG & Co. KG Shift fork for a motor vehicle transmission

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