GEAR PART AND MANUFACTURING METHOD THEREFOR
PROBLEM TO BE SOLVED: To provide a compact and weight-reduced gear part through the integration of a gear member and a rotary member, and a mass productive manufacturing method for the gear part. SOLUTION: In a manufacturing method for the gear part comprised of the gear member and the rotary member...
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| creator | KUSUMOTO TAKUJI |
| description | PROBLEM TO BE SOLVED: To provide a compact and weight-reduced gear part through the integration of a gear member and a rotary member, and a mass productive manufacturing method for the gear part. SOLUTION: In a manufacturing method for the gear part comprised of the gear member and the rotary member, an intermediately formed work 5 is formed in a first process, which is comprised of the rotary member 3 and a preliminary form 5a for the gear member with its side profile in a shape of a hand drum. In a second process, while the rotary member 3 is cramped from four directions with cramping metal dies 8, the intermediately formed work 5 is axially compressed to form the gear member 2 with an upper metal die 7 and a lower punch 10, which have compressing parts 7a, 10a for the inside of a material respectively. In those steps, the gear part is integrally formed by forging. The forming process prevents a folding defect or the like without causing lapping of material in filling into a tooth space 12 so that it enables the mass production of gear part such as a load sheave and a pinion gear which contribute to the miniaturization and weight reduction of a machine such as a chain block. |
| format | Patent |
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SOLUTION: In a manufacturing method for the gear part comprised of the gear member and the rotary member, an intermediately formed work 5 is formed in a first process, which is comprised of the rotary member 3 and a preliminary form 5a for the gear member with its side profile in a shape of a hand drum. In a second process, while the rotary member 3 is cramped from four directions with cramping metal dies 8, the intermediately formed work 5 is axially compressed to form the gear member 2 with an upper metal die 7 and a lower punch 10, which have compressing parts 7a, 10a for the inside of a material respectively. In those steps, the gear part is integrally formed by forging. The forming process prevents a folding defect or the like without causing lapping of material in filling into a tooth space 12 so that it enables the mass production of gear part such as a load sheave and a pinion gear which contribute to the miniaturization and weight reduction of a machine such as a chain block.</description><edition>7</edition><language>eng</language><subject>BLASTING ; ENGINEERING ELEMENTS AND UNITS ; FORGE FURNACES ; FORGING ; GEARING ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; HAMMERING ; HEATING ; LIGHTING ; MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS ; MECHANICAL ENGINEERING ; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL ; PERFORMING OPERATIONS ; PRESSING METAL ; PUNCHING METAL ; RIVETING ; THERMAL INSULATION IN GENERAL ; TRANSPORTING ; WEAPONS</subject><creationdate>2003</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=20030402&DB=EPODOC&CC=JP&NR=2003094142A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25566,76549</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20030402&DB=EPODOC&CC=JP&NR=2003094142A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KUSUMOTO TAKUJI</creatorcontrib><title>GEAR PART AND MANUFACTURING METHOD THEREFOR</title><description>PROBLEM TO BE SOLVED: To provide a compact and weight-reduced gear part through the integration of a gear member and a rotary member, and a mass productive manufacturing method for the gear part. SOLUTION: In a manufacturing method for the gear part comprised of the gear member and the rotary member, an intermediately formed work 5 is formed in a first process, which is comprised of the rotary member 3 and a preliminary form 5a for the gear member with its side profile in a shape of a hand drum. In a second process, while the rotary member 3 is cramped from four directions with cramping metal dies 8, the intermediately formed work 5 is axially compressed to form the gear member 2 with an upper metal die 7 and a lower punch 10, which have compressing parts 7a, 10a for the inside of a material respectively. In those steps, the gear part is integrally formed by forging. The forming process prevents a folding defect or the like without causing lapping of material in filling into a tooth space 12 so that it enables the mass production of gear part such as a load sheave and a pinion gear which contribute to the miniaturization and weight reduction of a machine such as a chain block.</description><subject>BLASTING</subject><subject>ENGINEERING ELEMENTS AND UNITS</subject><subject>FORGE FURNACES</subject><subject>FORGING</subject><subject>GEARING</subject><subject>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</subject><subject>HAMMERING</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS</subject><subject>MECHANICAL ENGINEERING</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>THERMAL INSULATION IN GENERAL</subject><subject>TRANSPORTING</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2003</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNB2d3UMUghwDApRcPRzUfB19At1c3QOCQ3y9HNX8HUN8fB3UQjxcA1ydfMP4mFgTUvMKU7lhdLcDEpuriHOHrqpBfnxqcUFicmpeakl8V4BRgYGxgaWJoYmRo7GRCkCAKzhJTU</recordid><startdate>20030402</startdate><enddate>20030402</enddate><creator>KUSUMOTO TAKUJI</creator><scope>EVB</scope></search><sort><creationdate>20030402</creationdate><title>GEAR PART AND MANUFACTURING METHOD THEREFOR</title><author>KUSUMOTO TAKUJI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2003094142A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2003</creationdate><topic>BLASTING</topic><topic>ENGINEERING ELEMENTS AND UNITS</topic><topic>FORGE FURNACES</topic><topic>FORGING</topic><topic>GEARING</topic><topic>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</topic><topic>HAMMERING</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS</topic><topic>MECHANICAL ENGINEERING</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>THERMAL INSULATION IN GENERAL</topic><topic>TRANSPORTING</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>KUSUMOTO TAKUJI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KUSUMOTO TAKUJI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>GEAR PART AND MANUFACTURING METHOD THEREFOR</title><date>2003-04-02</date><risdate>2003</risdate><abstract>PROBLEM TO BE SOLVED: To provide a compact and weight-reduced gear part through the integration of a gear member and a rotary member, and a mass productive manufacturing method for the gear part. SOLUTION: In a manufacturing method for the gear part comprised of the gear member and the rotary member, an intermediately formed work 5 is formed in a first process, which is comprised of the rotary member 3 and a preliminary form 5a for the gear member with its side profile in a shape of a hand drum. In a second process, while the rotary member 3 is cramped from four directions with cramping metal dies 8, the intermediately formed work 5 is axially compressed to form the gear member 2 with an upper metal die 7 and a lower punch 10, which have compressing parts 7a, 10a for the inside of a material respectively. In those steps, the gear part is integrally formed by forging. The forming process prevents a folding defect or the like without causing lapping of material in filling into a tooth space 12 so that it enables the mass production of gear part such as a load sheave and a pinion gear which contribute to the miniaturization and weight reduction of a machine such as a chain block.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| language | eng |
| recordid | cdi_epo_espacenet_JP2003094142A |
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| subjects | BLASTING ENGINEERING ELEMENTS AND UNITS FORGE FURNACES FORGING GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HAMMERING HEATING LIGHTING MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PRESSING METAL PUNCHING METAL RIVETING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS |
| title | GEAR PART AND MANUFACTURING METHOD THEREFOR |
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