IN2012DN04873A - - Google Patents

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Publication number
IN2012DN04873A
IN2012DN04873A IN4873DEN2012A IN2012DN04873A IN 2012DN04873 A IN2012DN04873 A IN 2012DN04873A IN 4873DEN2012 A IN4873DEN2012 A IN 4873DEN2012A IN 2012DN04873 A IN2012DN04873 A IN 2012DN04873A
Authority
IN
India
Prior art keywords
eye
compressive residual
residual stress
region
leaf spring
Prior art date
Application number
Inventor
Akira Tange
Kiyoshi Kurimoto
Yurika Goto
Tadakazu Kato
Shinichi Inoguchi
Original Assignee
Nhk Spring Co Ltd
Sumihatsu 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 Nhk Spring Co Ltd, Sumihatsu Co Ltd filed Critical Nhk Spring Co Ltd
Publication of IN2012DN04873A publication Critical patent/IN2012DN04873A/en

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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/18—Leaf springs
    • F16F1/26—Attachments or mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
    • C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/18—Leaf springs
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2221/00—Treating localised areas of an article
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2221/00—Treating localised areas of an article
    • C21D2221/10—Differential treatment of inner with respect to outer regions, e.g. core and periphery, respectively
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2226/00—Manufacturing; Treatments
    • F16F2226/02—Surface treatments

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Springs (AREA)

Abstract

A leaf spring device (10) is provided with a leaf spring (11), which has an eye (12) at each end thereof, and a bushing (20) press-fitted into the eye (12) . An inner surface (30) of the eye (12) is shaved by means of a reamer or the like and is shot-peened. A compressive residual stress distribution on the inner eye surface (30) formed by the shot peening is such that the absolute value of a compressive residual stress (τ1 in a first region (S1), including a winding start portion (31) of the eye (12), and the absolute value of a compressive residual stress (τ2) in a second region (S2), including a winding intermediate point (32) of the eye (12), are greater than the absolute values of compressive residual stresses (τ3) in other regions (S3) of the inner eye surface (30).
IN4873DEN2012 2009-12-24 2010-12-13 IN2012DN04873A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009293414A JP5450041B2 (en) 2009-12-24 2009-12-24 Leaf spring device having eyeball part, method for manufacturing leaf spring device, and shot peening device
PCT/JP2010/072357 WO2011077985A1 (en) 2009-12-24 2010-12-13 Leaf spring device having eye, leaf spring device manufacturing method, and shot peening apparatus

Publications (1)

Publication Number Publication Date
IN2012DN04873A true IN2012DN04873A (en) 2015-09-25

Family

ID=44195515

Family Applications (1)

Application Number Title Priority Date Filing Date
IN4873DEN2012 IN2012DN04873A (en) 2009-12-24 2010-12-13

Country Status (7)

Country Link
JP (1) JP5450041B2 (en)
KR (1) KR101412288B1 (en)
CN (1) CN102666016B (en)
IN (1) IN2012DN04873A (en)
MX (1) MX346419B (en)
MY (1) MY156148A (en)
WO (1) WO2011077985A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6007097B2 (en) * 2012-12-20 2016-10-12 日本発條株式会社 Suspension spring device and suspension coil spring
CN103453059A (en) * 2013-07-31 2013-12-18 漯河君叁材料高科有限公司 Composite plate spring with open integrated eye
MX367553B (en) 2014-05-28 2019-08-27 Nhk Spring Co Ltd Suspension spring device and suspension coil spring.
JP6601436B2 (en) * 2017-02-15 2019-11-06 トヨタ自動車株式会社 Leaf spring with bush
AT520621B1 (en) 2017-10-16 2023-04-15 Hendrickson Comm Vehicle Sys Europe Gmbh Spring leaf and method of manufacturing a spring leaf
US11293738B2 (en) 2018-12-31 2022-04-05 Apex Brands, Inc. Method and apparatus for providing a measuring tape with increased cupping

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0529557Y2 (en) * 1987-05-29 1993-07-28
JPS6478763A (en) * 1987-09-15 1989-03-24 Hino Motors Ltd Processing method for plate spring eye
JPH0736982B2 (en) * 1991-11-18 1995-04-26 日本発条株式会社 Shot peening equipment for leaf spring centerpiece
CN2207474Y (en) * 1994-12-30 1995-09-13 卢汝洪 T-shape steel plate spring
JP2002120153A (en) * 2000-10-13 2002-04-23 Hitachi Ltd Shot peening equipment
JP4059421B2 (en) * 2000-10-31 2008-03-12 新東工業株式会社 Shot pinning device
CN2586847Y (en) * 2002-09-28 2003-11-19 郑州大新科贸有限公司 Trailer series variable cross-section variable steel-degree band spring

Also Published As

Publication number Publication date
WO2011077985A1 (en) 2011-06-30
KR101412288B1 (en) 2014-06-25
MX346419B (en) 2017-03-21
MX2012007278A (en) 2012-07-20
JP5450041B2 (en) 2014-03-26
MY156148A (en) 2016-01-15
CN102666016B (en) 2014-12-03
CN102666016A (en) 2012-09-12
JP2011131338A (en) 2011-07-07
KR20120085327A (en) 2012-07-31

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