CRANKSHAFT MANUFACTURING METHOD
PROBLEM TO BE SOLVED: To provide a crankshaft manufacturing method which can improve the yield of materials and reduce molding loads.SOLUTION: A crankshaft manufacturing method includes a first squeeze-molding step, a squeeze-second molding step, a rough molding step, and a finish molding step succe...
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| creator | DEGUCHI TOMOAKI IDE HAYATO SERIZAWA MITSUHIRO MATSUI HIROSHI |
| description | PROBLEM TO BE SOLVED: To provide a crankshaft manufacturing method which can improve the yield of materials and reduce molding loads.SOLUTION: A crankshaft manufacturing method includes a first squeeze-molding step, a squeeze-second molding step, a rough molding step, and a finish molding step successively performed for a billet 60 to obtain a crankshaft. In the first squeeze-molding step, axial volume distribution of the billet 60 is performed by making projection parts 11b, 12b, 11c, 12c provided on first metal molds 11, 12 bite into the billet 60 with the first metal molds 11, 12 at parts corresponding to vicinities of center balance weight of the crankshaft. Further, volume excess wall-thickness parts 62, 63 are molded at pin molding planned parts on the axial end side.EFFECT: An optimal material distribution can be performed to a necessary part to suppress the generation of an excess of burr, thereby enabling an improvement in the yield of materials and a reduction in molding loads.SELECTED DRAWING: Figure 4
【課題】材料の歩留まりを向上させるとともに、成形荷重の低減を図ることができるクランクシャフトの製造方法を提供することを課題とする。【解決手段】第１潰し成形工程、第２潰し成形工程、荒成形工程、仕上げ成形工程を、ビレット６０に対して順次行い、クランクシャフトを得るクランクシャフトの製造方法である。第１潰し成形工程では、第１金型１１，１２でビレット６０に対し、クランクシャフトの中央バランスウェイト近傍に相当する部分に、第１金型１１，１２に設けた突起部１１ｂ，１２ｂ，１１ｃ，１２ｃを食い込ませてビレット６０の軸方向の体積配分を行う。さらに、軸端部側のピン部成形予定部に体積余剰肉部６２，６３を成形する。【効果】必要部位へ最適な材料配分をすることができ、過剰なバリの発生を抑制し、材料の歩留まりを向上させるとともに、成形荷重の低減を図ることができる。【選択図】図４ |
| format | Patent |
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【課題】材料の歩留まりを向上させるとともに、成形荷重の低減を図ることができるクランクシャフトの製造方法を提供することを課題とする。【解決手段】第１潰し成形工程、第２潰し成形工程、荒成形工程、仕上げ成形工程を、ビレット６０に対して順次行い、クランクシャフトを得るクランクシャフトの製造方法である。第１潰し成形工程では、第１金型１１，１２でビレット６０に対し、クランクシャフトの中央バランスウェイト近傍に相当する部分に、第１金型１１，１２に設けた突起部１１ｂ，１２ｂ，１１ｃ，１２ｃを食い込ませてビレット６０の軸方向の体積配分を行う。さらに、軸端部側のピン部成形予定部に体積余剰肉部６２，６３を成形する。【効果】必要部位へ最適な材料配分をすることができ、過剰なバリの発生を抑制し、材料の歩留まりを向上させるとともに、成形荷重の低減を図ることができる。【選択図】図４</description><language>eng ; jpn</language><subject>FORGE FURNACES ; FORGING ; HAMMERING ; MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS ; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL ; PERFORMING OPERATIONS ; PRESSING METAL ; PUNCHING METAL ; RIVETING ; TRANSPORTING</subject><creationdate>2016</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20160620&DB=EPODOC&CC=JP&NR=2016107271A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20160620&DB=EPODOC&CC=JP&NR=2016107271A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>DEGUCHI TOMOAKI</creatorcontrib><creatorcontrib>IDE HAYATO</creatorcontrib><creatorcontrib>SERIZAWA MITSUHIRO</creatorcontrib><creatorcontrib>MATSUI HIROSHI</creatorcontrib><title>CRANKSHAFT MANUFACTURING METHOD</title><description>PROBLEM TO BE SOLVED: To provide a crankshaft manufacturing method which can improve the yield of materials and reduce molding loads.SOLUTION: A crankshaft manufacturing method includes a first squeeze-molding step, a squeeze-second molding step, a rough molding step, and a finish molding step successively performed for a billet 60 to obtain a crankshaft. In the first squeeze-molding step, axial volume distribution of the billet 60 is performed by making projection parts 11b, 12b, 11c, 12c provided on first metal molds 11, 12 bite into the billet 60 with the first metal molds 11, 12 at parts corresponding to vicinities of center balance weight of the crankshaft. Further, volume excess wall-thickness parts 62, 63 are molded at pin molding planned parts on the axial end side.EFFECT: An optimal material distribution can be performed to a necessary part to suppress the generation of an excess of burr, thereby enabling an improvement in the yield of materials and a reduction in molding loads.SELECTED DRAWING: Figure 4
【課題】材料の歩留まりを向上させるとともに、成形荷重の低減を図ることができるクランクシャフトの製造方法を提供することを課題とする。【解決手段】第１潰し成形工程、第２潰し成形工程、荒成形工程、仕上げ成形工程を、ビレット６０に対して順次行い、クランクシャフトを得るクランクシャフトの製造方法である。第１潰し成形工程では、第１金型１１，１２でビレット６０に対し、クランクシャフトの中央バランスウェイト近傍に相当する部分に、第１金型１１，１２に設けた突起部１１ｂ，１２ｂ，１１ｃ，１２ｃを食い込ませてビレット６０の軸方向の体積配分を行う。さらに、軸端部側のピン部成形予定部に体積余剰肉部６２，６３を成形する。【効果】必要部位へ最適な材料配分をすることができ、過剰なバリの発生を抑制し、材料の歩留まりを向上させるとともに、成形荷重の低減を図ることができる。【選択図】図４</description><subject>FORGE FURNACES</subject><subject>FORGING</subject><subject>HAMMERING</subject><subject>MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS</subject><subject>MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL</subject><subject>PERFORMING OPERATIONS</subject><subject>PRESSING METAL</subject><subject>PUNCHING METAL</subject><subject>RIVETING</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2016</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJB3DnL08w72cHQLUfB19At1c3QOCQ3y9HNX8HUN8fB34WFgTUvMKU7lhdLcDEpuriHOHrqpBfnxqcUFicmpeakl8V4BRgaGZoYG5kbmho7GRCkCACQMIio</recordid><startdate>20160620</startdate><enddate>20160620</enddate><creator>DEGUCHI TOMOAKI</creator><creator>IDE HAYATO</creator><creator>SERIZAWA MITSUHIRO</creator><creator>MATSUI HIROSHI</creator><scope>EVB</scope></search><sort><creationdate>20160620</creationdate><title>CRANKSHAFT MANUFACTURING METHOD</title><author>DEGUCHI TOMOAKI ; IDE HAYATO ; SERIZAWA MITSUHIRO ; MATSUI HIROSHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2016107271A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2016</creationdate><topic>FORGE FURNACES</topic><topic>FORGING</topic><topic>HAMMERING</topic><topic>MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS</topic><topic>MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL</topic><topic>PERFORMING OPERATIONS</topic><topic>PRESSING METAL</topic><topic>PUNCHING METAL</topic><topic>RIVETING</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>DEGUCHI TOMOAKI</creatorcontrib><creatorcontrib>IDE HAYATO</creatorcontrib><creatorcontrib>SERIZAWA MITSUHIRO</creatorcontrib><creatorcontrib>MATSUI HIROSHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>DEGUCHI TOMOAKI</au><au>IDE HAYATO</au><au>SERIZAWA MITSUHIRO</au><au>MATSUI HIROSHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>CRANKSHAFT MANUFACTURING METHOD</title><date>2016-06-20</date><risdate>2016</risdate><abstract>PROBLEM TO BE SOLVED: To provide a crankshaft manufacturing method which can improve the yield of materials and reduce molding loads.SOLUTION: A crankshaft manufacturing method includes a first squeeze-molding step, a squeeze-second molding step, a rough molding step, and a finish molding step successively performed for a billet 60 to obtain a crankshaft. In the first squeeze-molding step, axial volume distribution of the billet 60 is performed by making projection parts 11b, 12b, 11c, 12c provided on first metal molds 11, 12 bite into the billet 60 with the first metal molds 11, 12 at parts corresponding to vicinities of center balance weight of the crankshaft. Further, volume excess wall-thickness parts 62, 63 are molded at pin molding planned parts on the axial end side.EFFECT: An optimal material distribution can be performed to a necessary part to suppress the generation of an excess of burr, thereby enabling an improvement in the yield of materials and a reduction in molding loads.SELECTED DRAWING: Figure 4
【課題】材料の歩留まりを向上させるとともに、成形荷重の低減を図ることができるクランクシャフトの製造方法を提供することを課題とする。【解決手段】第１潰し成形工程、第２潰し成形工程、荒成形工程、仕上げ成形工程を、ビレット６０に対して順次行い、クランクシャフトを得るクランクシャフトの製造方法である。第１潰し成形工程では、第１金型１１，１２でビレット６０に対し、クランクシャフトの中央バランスウェイト近傍に相当する部分に、第１金型１１，１２に設けた突起部１１ｂ，１２ｂ，１１ｃ，１２ｃを食い込ませてビレット６０の軸方向の体積配分を行う。さらに、軸端部側のピン部成形予定部に体積余剰肉部６２，６３を成形する。【効果】必要部位へ最適な材料配分をすることができ、過剰なバリの発生を抑制し、材料の歩留まりを向上させるとともに、成形荷重の低減を図ることができる。【選択図】図４</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | FORGE FURNACES FORGING HAMMERING MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PRESSING METAL PUNCHING METAL RIVETING TRANSPORTING |
| title | CRANKSHAFT MANUFACTURING METHOD |
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