JPS57149655A - Manufacturing method of cam shaft - Google Patents

Manufacturing method of cam shaft

Info

Publication number
JPS57149655A
JPS57149655A JP3418881A JP3418881A JPS57149655A JP S57149655 A JPS57149655 A JP S57149655A JP 3418881 A JP3418881 A JP 3418881A JP 3418881 A JP3418881 A JP 3418881A JP S57149655 A JPS57149655 A JP S57149655A
Authority
JP
Japan
Prior art keywords
elastic member
bulge
cam
pipe
tensile stress
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
JP3418881A
Other languages
Japanese (ja)
Inventor
Toshifumi Nishimura
Kaoru Katayama
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP3418881A priority Critical patent/JPS57149655A/en
Publication of JPS57149655A publication Critical patent/JPS57149655A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • 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
    • F16H53/00—Cams or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/02—Single-track cams for single-revolution cycles; Camshafts with such cams
    • F16H53/025—Single-track cams for single-revolution cycles; Camshafts with such cams characterised by their construction, e.g. assembling or manufacturing features

Landscapes

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

Abstract

PURPOSE:To prevent breakage at any portion of cam by using a bulge metal die provided with an elastic member applied to the cam supporting surface, and applying compressive force to the elastic member when die is set up for the bulge forming process, thus maintaining initial compressive load at the area of protrusion. CONSTITUTION:The pipe material 1' is inserted in position to the fixed half of the metal die 10 of bulge process, and other half of the die 10 assembled by means of a guide pin 15, and two halves tightened up. At this moment, an elastic member 14 is squeezed between the protruding area 2 and the supporting surface 11 of cam so that initial compressive load directing inward is imposed on the protruding area of the elastic member 14. Under such condition, emulsion liquid is introduced into the pipe 1' and pressure applied forcing the pipe 1' bulge out. As the pipe bulge outward, tensile stress is generated, however, because of the initial compressive load imposed by the elastic member 14, part of the tensile stress is cancelled, so that the maximum tensile stress at the cam area 2 is considerably reduced.
JP3418881A 1981-03-10 1981-03-10 Manufacturing method of cam shaft Pending JPS57149655A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3418881A JPS57149655A (en) 1981-03-10 1981-03-10 Manufacturing method of cam shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3418881A JPS57149655A (en) 1981-03-10 1981-03-10 Manufacturing method of cam shaft

Publications (1)

Publication Number Publication Date
JPS57149655A true JPS57149655A (en) 1982-09-16

Family

ID=12407210

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3418881A Pending JPS57149655A (en) 1981-03-10 1981-03-10 Manufacturing method of cam shaft

Country Status (1)

Country Link
JP (1) JPS57149655A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6174965A (en) * 1984-09-17 1986-04-17 Musashi Seimitsu Kogyo Kk Assembly cam shaft
US4597365A (en) * 1985-02-07 1986-07-01 General Motors Corporation Camshaft assembly and method
US4693138A (en) * 1985-12-31 1987-09-15 Hughes Robert W Cam shaft with expanded hollow shaft
US4738012A (en) * 1985-12-31 1988-04-19 Hughes Robert W Method of making a cam shaft
US4763503A (en) * 1985-12-31 1988-08-16 Hughes Robert W Apparatus for making a cam shaft
US4781076A (en) * 1986-01-17 1988-11-01 The Torrington Company Camshaft for reciprocating piston engines
US4835832A (en) * 1987-03-09 1989-06-06 General Motors Corporation Method of assembling tubular shaft assemblies
US4847963A (en) * 1987-09-30 1989-07-18 The Torrington Company Camshaft manufacture
US4875270A (en) * 1986-08-12 1989-10-24 Balcke-Durr Aktiengesellschaft Method of securing parts to a hollow member
US4882825A (en) * 1983-01-14 1989-11-28 Kokan Kako Co., Ltd. Method of connecting a tubular member with an annular member
US5041253A (en) * 1987-10-01 1991-08-20 Husted Royce Hill Method of making a plastic stabilized composite camshaft
USRE33888E (en) * 1986-01-17 1992-04-21 The Torrington Company Method of making a camshaft for reciprocating piston engines
US5165304A (en) * 1988-12-17 1992-11-24 Mannesmann Aktiengesellschaft Assembled shaft
US5201247A (en) * 1988-01-14 1993-04-13 Mannesmann Aktiengesellschaft Assembled shaft and process for production thereof
USRE34565E (en) * 1986-01-17 1994-03-22 The Torrington Company Camshaft for reciprocating piston engines

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882825A (en) * 1983-01-14 1989-11-28 Kokan Kako Co., Ltd. Method of connecting a tubular member with an annular member
JPS6174965A (en) * 1984-09-17 1986-04-17 Musashi Seimitsu Kogyo Kk Assembly cam shaft
US4597365A (en) * 1985-02-07 1986-07-01 General Motors Corporation Camshaft assembly and method
US4693138A (en) * 1985-12-31 1987-09-15 Hughes Robert W Cam shaft with expanded hollow shaft
US4738012A (en) * 1985-12-31 1988-04-19 Hughes Robert W Method of making a cam shaft
US4763503A (en) * 1985-12-31 1988-08-16 Hughes Robert W Apparatus for making a cam shaft
USRE33888E (en) * 1986-01-17 1992-04-21 The Torrington Company Method of making a camshaft for reciprocating piston engines
US4781076A (en) * 1986-01-17 1988-11-01 The Torrington Company Camshaft for reciprocating piston engines
USRE34565E (en) * 1986-01-17 1994-03-22 The Torrington Company Camshaft for reciprocating piston engines
US4875270A (en) * 1986-08-12 1989-10-24 Balcke-Durr Aktiengesellschaft Method of securing parts to a hollow member
US4841627A (en) * 1987-03-09 1989-06-27 General Motors Corporation Apparatus for making tubular camshaft assemblies
US4922785A (en) * 1987-03-09 1990-05-08 General Motors Corporation Tubular camshaft assemblies and the like
US4835832A (en) * 1987-03-09 1989-06-06 General Motors Corporation Method of assembling tubular shaft assemblies
US4847963A (en) * 1987-09-30 1989-07-18 The Torrington Company Camshaft manufacture
US5041253A (en) * 1987-10-01 1991-08-20 Husted Royce Hill Method of making a plastic stabilized composite camshaft
US5201247A (en) * 1988-01-14 1993-04-13 Mannesmann Aktiengesellschaft Assembled shaft and process for production thereof
US5165304A (en) * 1988-12-17 1992-11-24 Mannesmann Aktiengesellschaft Assembled shaft

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