JPWO2016166932A1 - コンロッド及びその製造方法 - Google Patents
コンロッド及びその製造方法 Download PDFInfo
- Publication number
- JPWO2016166932A1 JPWO2016166932A1 JP2017512189A JP2017512189A JPWO2016166932A1 JP WO2016166932 A1 JPWO2016166932 A1 JP WO2016166932A1 JP 2017512189 A JP2017512189 A JP 2017512189A JP 2017512189 A JP2017512189 A JP 2017512189A JP WO2016166932 A1 JPWO2016166932 A1 JP WO2016166932A1
- Authority
- JP
- Japan
- Prior art keywords
- rib
- connecting rod
- hardness
- forging
- pair
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 29
- 238000005242 forging Methods 0.000 claims description 61
- 239000000463 material Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000010273 cold forging Methods 0.000 description 32
- 230000000052 comparative effect Effects 0.000 description 18
- 238000000465 moulding Methods 0.000 description 15
- 238000005482 strain hardening Methods 0.000 description 8
- 210000001217 buttock Anatomy 0.000 description 7
- 238000013459 approach Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910000712 Boron steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000007545 Vickers hardness test Methods 0.000 description 1
- PPWPWBNSKBDSPK-UHFFFAOYSA-N [B].[C] Chemical compound [B].[C] PPWPWBNSKBDSPK-UHFFFAOYSA-N 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
- F16C7/02—Constructions of connecting-rods with constant length
- F16C7/023—Constructions of connecting-rods with constant length for piston engines, pumps or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/84—Making other particular articles other parts for engines, e.g. connecting-rods
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
- F16C9/04—Connecting-rod bearings; Attachments thereof
- F16C9/045—Connecting-rod bearings; Attachments thereof the bearing cap of the connecting rod being split by fracturing
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/22—Internal combustion engines
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
- F16J1/16—Connection to driving members with connecting-rods, i.e. pivotal connections with gudgeon-pin; Gudgeon-pins
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Forging (AREA)
Abstract
Description
2 大端部
3 小端部
4 桿部
21 リブ部
22 ウェブ部
23 リブ根元部
24 リブ先端部
30 金型
31 下成形型
32 上成形型
32s 側壁
51 コンロッド1の粗形材
W 桿部4の幅
d リブ間隔
h リブ高さ
t リブ厚さ
Claims (7)
- 大端部と小端部とこれらを繋ぐ断面略H形の桿部とを有するコンロッドであって、
前記桿部は、断面において、互いに平行に延在する一対のリブ部と、当該一対のリブ部の高さ方向の略中央に両端が接続するウェブ部とを有し、
前記リブ部は、前記桿部の断面において、高さ方向の中央に位置するリブ根元部と、高さ方向の両端に位置する一対のリブ先端部とからなり、
前記リブ先端部の硬さが前記ウェブ部の硬さに対して40HV以上高く、前記リブ根元部の硬さが前記ウェブ部の硬さに対して30HV以上高いことを特徴とするコンロッド。 - 前記リブ先端部の硬さが前記リブ根元部の硬さよりも高いことを特徴とする請求項1に記載のコンロッド。
- 大端部と、小端部と、断面において互いに平行に延在する一対のリブ部及び当該一対のリブ部の高さ方向の略中央に両端が接続するウェブ部を有し、断面略H形を呈して前記大端部及び前記小端部を繋ぐ桿部とを有するコンロッドの製造方法であって、
素材鋼を熱間鍛造し、前記コンロッドの粗形材を成形した後、当該粗形材を空冷する第1工程と、
前記粗形材を下成形型と上成形型とにより上下から挟み込み、断面において前記リブ部の高さ方向の両端に位置する一対のリブ先端部の硬さが前記ウェブ部の硬さに対して40HV以上高く、断面において前記リブ部の高さ方向の中央に位置するリブ根元部の硬さが前記ウェブ部の硬さに対して30HV以上高くなるように鍛造する第2工程と
を含むことを特徴とするコンロッドの製造方法。 - 前記第2工程では、前記粗形材を冷間鍛造することを特徴とする請求項3に記載のコンロッドの製造方法。
- 前記第2工程では、前記粗形材のリブ高さに比べて鍛造後の前記コンロッドのリブ高さが小さく、前記粗形材のリブ厚さに比べて鍛造後の前記コンロッドのリブ厚さが大きく、前記粗形材のリブ間隔に比べて鍛造後の前記コンロッドのリブ間隔が大きく、前記粗形材の桿部の幅に比べて鍛造後の前記コンロッドの桿部の幅が大きくなるような形状の前記下成形型及び前記上成形型を用いて、前記粗形材を冷間鍛造することを特徴とする請求項4に記載のコンロッドの製造方法。
- 前記第2工程では、鍛造後に前記一対のリブ部の高さ方向の中央よりも上方へ延出する側壁を有する前記下成形型を用い、鍛造荷重を加えた時に前記粗形材の前記一対のリブ部の中央部を前記下成形型により外方から拘束すると共に、鍛造荷重を加えた時に、前記粗形材の前記一対のリブ部の下側部分の外面と前記下成形型の内面との間に間隙が残り、かつ前記粗形材の前記一対のリブ部の上側部分の外面と前記上成形型の内面との間に間隙が残るような前記下成形型及び前記上成形型を用いて、前記粗形材を冷間鍛造することを特徴とする請求項5に記載のコンロッドの製造方法。
- 前記第2工程の後、前記コンロッドを加熱した後に空冷する焼鈍しを行う第3工程を更に含むことを特徴とする請求項3〜請求項6のいずれかに記載のコンロッドの製造方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015083861 | 2015-04-16 | ||
JP2015083861 | 2015-04-16 | ||
PCT/JP2016/001306 WO2016166932A1 (ja) | 2015-04-16 | 2016-03-09 | コンロッド及びその製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2016166932A1 true JPWO2016166932A1 (ja) | 2017-09-21 |
JP6387456B2 JP6387456B2 (ja) | 2018-09-05 |
Family
ID=57126755
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2017512189A Expired - Fee Related JP6387456B2 (ja) | 2015-04-16 | 2016-03-09 | コンロッドの製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US10161439B2 (ja) |
JP (1) | JP6387456B2 (ja) |
CN (1) | CN107532636B (ja) |
DE (1) | DE112016001755T5 (ja) |
WO (1) | WO2016166932A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10578150B2 (en) * | 2018-07-24 | 2020-03-03 | GM Global Technology Operations LLC | Combustion engine connecting rod |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52124406A (en) * | 1976-04-14 | 1977-10-19 | Hitachi Ltd | Connecting rod |
JPS5790921U (ja) * | 1980-11-25 | 1982-06-04 | ||
JPS57115937U (ja) * | 1981-01-12 | 1982-07-17 | ||
JPH09196044A (ja) * | 1996-01-22 | 1997-07-29 | Nissan Motor Co Ltd | コンロッドの製造方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1450056B1 (en) | 2003-02-19 | 2017-06-07 | Nissan Motor Co., Ltd. | High-strength connecting rod and method of producing same |
JP4254345B2 (ja) | 2003-02-19 | 2009-04-15 | 日産自動車株式会社 | 高強度コンロッドおよびその製造方法 |
DE602004017144D1 (de) * | 2003-03-18 | 2008-11-27 | Sumitomo Metal Ind | Nicht abgeschreckte/getemperte pleuelstange und zugehöriges herstellungsverfahren |
JP2005014079A (ja) | 2003-06-30 | 2005-01-20 | Aichi Steel Works Ltd | 部分冷間強化コンロッドの製造方法 |
JP4225178B2 (ja) | 2003-10-14 | 2009-02-18 | トヨタ自動車株式会社 | コンロッドの製造方法及び製造装置 |
JP2007146233A (ja) | 2005-11-28 | 2007-06-14 | Nippon Steel Corp | 鋼製自動車用構造部品の製造方法 |
EP1801432A3 (en) * | 2005-12-20 | 2009-07-22 | Yamaha Hatsudoki Kabushiki Kaisha | Connecting rod and method of producing the same |
JP5268715B2 (ja) | 2009-03-05 | 2013-08-21 | 株式会社三條機械製作所 | コンロッドの製造方法及びこれに用いるコイニング型装置 |
JP2010261473A (ja) * | 2009-04-30 | 2010-11-18 | Yamaha Motor Co Ltd | 内燃機関用摺動部品、内燃機関、輸送機器および内燃機関用摺動部品の製造方法 |
JP2011084767A (ja) | 2009-10-14 | 2011-04-28 | Honda Motor Co Ltd | クラッキングコンロッドの製造方法 |
-
2016
- 2016-03-09 US US15/564,034 patent/US10161439B2/en active Active
- 2016-03-09 WO PCT/JP2016/001306 patent/WO2016166932A1/ja active Application Filing
- 2016-03-09 CN CN201680022009.XA patent/CN107532636B/zh active Active
- 2016-03-09 DE DE112016001755.3T patent/DE112016001755T5/de not_active Ceased
- 2016-03-09 JP JP2017512189A patent/JP6387456B2/ja not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52124406A (en) * | 1976-04-14 | 1977-10-19 | Hitachi Ltd | Connecting rod |
JPS5790921U (ja) * | 1980-11-25 | 1982-06-04 | ||
JPS57115937U (ja) * | 1981-01-12 | 1982-07-17 | ||
JPH09196044A (ja) * | 1996-01-22 | 1997-07-29 | Nissan Motor Co Ltd | コンロッドの製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JP6387456B2 (ja) | 2018-09-05 |
CN107532636B (zh) | 2020-01-17 |
DE112016001755T5 (de) | 2018-01-18 |
CN107532636A (zh) | 2018-01-02 |
US20180087562A1 (en) | 2018-03-29 |
WO2016166932A1 (ja) | 2016-10-20 |
US10161439B2 (en) | 2018-12-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9550221B2 (en) | Press forming method for steel plate | |
JP6384592B2 (ja) | 鍛造クランク軸の製造方法 | |
JP6091046B2 (ja) | アルミ合金ボルトの製造方法及びアルミ合金ボルト | |
JP6245369B2 (ja) | 鍛造クランク軸の製造方法 | |
JPWO2007057946A1 (ja) | 冷媒入り中空ポペットバルブおよびその製造方法 | |
KR20140022827A (ko) | 포펫 밸브의 페이스부의 형성 방법 및 이 형성 방법에 의한 페이스부를 가지는 포펫 밸브 | |
US20160250679A1 (en) | Method for producing a forged crankshaft | |
US10413965B2 (en) | Method for producing forged crankshaft | |
JPWO2016147674A1 (ja) | 鍛造クランク軸の製造方法 | |
JP6387456B2 (ja) | コンロッドの製造方法 | |
KR20140048152A (ko) | 피스톤 또는 피스톤 샤프트를 제조하기 위한 단조 방법 | |
US11192162B2 (en) | Method and device for forming a semi-finished product | |
JP6795812B2 (ja) | アルミニウム合金製ボルト | |
JP2005014079A (ja) | 部分冷間強化コンロッドの製造方法 | |
US10828693B2 (en) | Apparatus for manufacturing forged crankshaft | |
CN114260403B (zh) | 盆状铝合金模锻件性能方向均匀性的锻造方法 | |
KR200474298Y1 (ko) | 복합치형을 가진 제품을 제조하는 금형 | |
JP2006142355A (ja) | 座屈強度の優れた高強度軽量部品の製造方法及び製造された内燃機関用コンロッド。 | |
JP2010137248A (ja) | コンロッドの製造方法及びコンロッド | |
JP6387721B2 (ja) | 鍛造クランク軸の製造方法 | |
US20200086378A1 (en) | Method for producing forged crankshaft | |
JP2021008961A (ja) | アルミニウム合金製ボルト | |
KR101467041B1 (ko) | 크랭크 샤프트 제조방법 | |
RU2483829C1 (ru) | Способ изготовления шаровых пальцев | |
JP2018144110A (ja) | 鍛造クランク軸の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20170605 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20180313 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20180330 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20180508 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20180706 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20180731 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20180813 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6387456 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
LAPS | Cancellation because of no payment of annual fees |