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公开(公告)号：US20180071858A1
公开(公告)日：2018-03-15
申请号：US15560272
申请日：2015-04-15
申请人： KOMATSU LTD.
IPC分类号： B23K20/12
CPC分类号： B23K20/12 , B23K20/1295 , B23K20/227 , B23K20/2275 , B23K20/24 , B23K2103/04 , B23K2103/10 , B23K2103/20 , B23K2103/22
摘要： The method includes a step of preparing a first member made of a first metal and a second member made of a second metal having a smaller deformation resistance than the first metal, and a step of joining the first member and the second member. The step of joining includes a step of disposing the second member in a cavity of a mold, a step of heating the first member and the second member by relatively rotating the first member with respect to the second member, while pressing the first member against the second member, without changing a positional relationship, and a step of cooling the first member and the second member with the members being in contact with each other. In the step of disposing, the second member is disposed such that a second member contact surface is surrounded by the sidewall of the cavity.
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公开(公告)号：US20180085848A1
公开(公告)日：2018-03-29
申请号：US15560171
申请日：2015-04-15
申请人： KOMATSU LTD.
IPC分类号： B23K20/12
CPC分类号： B23K20/12 , B23K20/1295 , B23K20/227 , B23K20/2275 , B23K20/24 , B23K2103/20 , B23K2103/22
摘要： The method for producing a metal member includes a step of preparing a first member made of a first metal and having a recessed portion formed therein, and a second member made of a second metal having a smaller deformation resistance than the first metal, and a step of joining the first member and the second member. The step of joining includes a step of increasing temperatures of the first member and the second member by relatively rotating the second member with respect to the first member while pressing the second member against the first member with at least a part of the second member being received in the recessed portion, and a step of stopping the relative rotation of the second member with respect to the first member and cooling the first member and the second member with the members being pressed against each other.
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公开(公告)号：US20180056438A1
公开(公告)日：2018-03-01
申请号：US15560311
申请日：2015-04-15
申请人： KOMATSU LTD.
IPC分类号： B23K20/12
CPC分类号： B23K20/129 , B23K2103/20 , B23K2103/22 , B23K2103/26
摘要： The method includes a step of preparing a first member made of a first metal and a second member made of a second metal having a smaller deformation resistance than the first metal, and a step of joining the first member and the second member. The step of joining includes a step of heating the first member and the second member by relatively rotating the first member and the second member, while pressing the first member and the second member against each other, without changing a relative positional relationship therebetween, and a step of cooling the first member and the second member heated, while being pressed against each other. In a first contact surface which is a surface of the first member coming into contact with the second member, a recess is formed so as to include a region intersecting the axis of rotation.
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公开(公告)号：US20170203383A1
公开(公告)日：2017-07-20
申请号：US15329649
申请日：2014-08-29
申请人： KOMATSU LTD.
IPC分类号： B23K20/12
CPC分类号： B23K20/12 , F01B31/26 , F03C1/06 , F03C1/0605 , F04B1/124 , F04B1/22 , F04B27/08 , F04B27/0886 , F04B53/14
摘要： A metal member producing device includes a spindle, a base portion, and a driving portion which drives at least one of the spindle and the base portion in an axial direction of the spindle. Of the spindle and the base portion, one includes a first holding portion for holding a first member. The other has disposed thereon a mold for holding a second member to oppose the first holding portion. The mold includes a bottom wall and a sidewall that extends from the bottom wall in a direction intersecting the bottom wall. The sidewall has a resistive wall formed thereon, the resistive wall being a wall surface inclined with respect to a plane parallel to the axial direction of the spindle so as to face the bottom wall side.
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公开(公告)号：US20180339361A1
公开(公告)日：2018-11-29
申请号：US15756002
申请日：2015-10-29
申请人： KOMATSU LTD.
IPC分类号： B23K20/12
摘要： A machine component includes a first region having a first linear expansion coefficient, and a second region having a second linear expansion coefficient greater than the first linear expansion coefficient and joined to the first region. A region including an outer periphery of an interface between the first region and the second region is inclined toward the second region side over the entire periphery. On a surface of the first region, a groove is formed to extend along the outer periphery of the interface.
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公开(公告)号：US20180071859A1
公开(公告)日：2018-03-15
申请号：US15560353
申请日：2015-04-15
申请人： KOMATSU LTD.
IPC分类号： B23K20/12
CPC分类号： B23K20/12 , B23K20/129 , B23K2103/22
摘要： The method for producing a metal member includes a step of preparing a first member made of a first metal, a second member made of a second metal, and a third member made of a third metal, and a step of joining the first member and the second member via the third member. The step of joining includes a step of heating the first member, the second member, and the third member by stacking the first member, the third member, and the second member in this order and relatively rotating the first member about an axis of rotation, while pressing the first member against the third member, without changing a positional relationship, and a step of cooling the first member, the second member, and the third member heated, with the members being in the stacked state.
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公开(公告)号：US20170216950A1
公开(公告)日：2017-08-03
申请号：US15500651
申请日：2014-11-18
申请人： KOMATSU LTD.
发明人： Masayuki OHISHI , Masaharu AMANO
CPC分类号： B23K9/04 , B21J1/003 , B21J5/002 , B21K1/06 , B21K1/063 , B21K1/10 , B21K1/30 , B21K23/02 , B21L9/065 , B23K9/0026 , B23K9/044 , B23K9/173 , B23K9/23 , B23K2101/04 , B32B15/01 , B62D55/12 , C21D7/00 , C21D7/13 , C21D9/32 , C21D9/38 , C21D2251/04
摘要： A sprocket wheel, which is a machine component configured to slide relative to a bushing while being in contact with the bushing in an outer peripheral surface, includes a base made of a first metal, and an overlay that covers the base so as to constitute the outer peripheral surface. The surface of the overlay constituting the outer peripheral surface has been smoothed. Such a smoothed surface of the overlay makes the sprocket wheel less damaging to the bushing.
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公开(公告)号：US20180051693A1
公开(公告)日：2018-02-22
申请号：US15560222
申请日：2015-04-15
申请人： KOMATSU LTD.
CPC分类号： F04B53/162 , B23K20/12 , B23K2103/22 , B32B5/16 , B32B15/013 , B32B15/18 , B32B15/20 , F01B31/28 , F04B53/16 , F16C33/124 , F16C33/14 , F16C2204/10
摘要： A sliding component and its producing method are provided. The sliding component includes a base section made of steel or cast iron, and a sliding section having a sliding surface, made of copper alloy including hard particles, and joined to the base section. The hard particles in the sliding section are arranged such that those in a region including an outer periphery of the interface with the base section have their longitudinal directions coinciding with the directions along the outer periphery as compared to those in an inner peripheral side. This improves the durability of the sliding section in its region including the outer periphery of the interface with the base section.
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公开(公告)号：US20170217516A1
公开(公告)日：2017-08-03
申请号：US15500644
申请日：2014-11-18
申请人： KOMATSU LTD.
发明人： Masayuki OHISHI , Masaharu AMANO
IPC分类号： B62D55/125 , B23K9/04 , B21K1/30
摘要： A sprocket wheel has an annular shape. The sprocket wheel has a plurality of projections formed on an outer peripheral surface for transmitting a driving force to a track. The sprocket wheel includes a base made of a first metal, and an overlay including a second metal that covers the base so as to constitute at least a part of the outer peripheral surface. The overlay is formed with a metallic structure that is continuous in the circumferential direction so as to connect between adjacent ones of the projections.
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公开(公告)号：US20170216976A1
公开(公告)日：2017-08-03
申请号：US15500865
申请日：2014-11-18
申请人： KOMATSU LTD.
发明人： Masayuki OHISHI , Masaharu AMANO
CPC分类号： B23K35/327 , B23K9/04 , B23K31/02
摘要： A sprocket wheel, which is an example of the machine component, includes a base made of a first metal, and an overlay disposed in contact with the base to cover at least a part of a surface of the base. The overlay includes a matrix made of a second metal, and hard particles dispersed in the matrix. The overlay includes a protrusion that protrudes toward the base in a region including the interface between the overlay and the base.
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