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公开(公告)号：US20150367398A1
公开(公告)日：2015-12-24
申请号：US14653192
申请日：2013-12-26
IPC分类号： B21D24/00
CPC分类号： B21D24/005 , B21D22/21 , B21D22/30 , B21K23/00 , B21K23/02
摘要： A press forming apparatus (1a) consecutively carries out: a first step of pushing a flat plate-shaped workpiece into a die (14) by a forming punch (11), to form the workpiece into a cup-shaped workpiece (B); a second step of making the cup-shaped workpiece (B) move relatively to a position where a space (S2) is formed between a cup bottom part (B2) and the forming punch (11) by a holding down member (12) abutting on an end part of a cup vertical wall part (B1); and a third step of making a counter punch (13) approach the forming punch (11), to push a cup bottom part (B2) to a forming punch (11) side so that the cup bottom part (B2) is compressed by the forming punch (11) and the counter punch (13), making a material of the cup vertical wall part (B1) flow to a cup shoulder part (B3), thereby to thicken the cup shoulder part (B3).
摘要翻译： 压制成形装置（1a）连续地执行：通过成形冲头（11）将平板状工件推入模具（14）的第一步骤，以将工件形成为杯形工件（B）; 使杯状工件（B）相对于杯形底部（B2）与成形冲头（11）之间形成空间（S2）的位置通过抵接构件（12）相对移动的第二步骤 在杯子垂直壁部分（B1）的端部上; 以及使反冲头（13）接近成形冲头（11）的第三步骤，将杯底部（B2）推入成形冲头（11）侧，使得杯底部（B2）被压缩 成形冲头（11）和反冲头（13），使杯子垂直壁部分（B1）的材料流到杯子肩部（B3），从而增加杯子肩部（B3）。
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公开(公告)号：US20150314357A1
公开(公告)日：2015-11-05
申请号：US14650593
申请日：2013-12-26
摘要： An inner punch (11), an outer punch (12), and a die (13) are disposed on the same center axis (10). The outer punch (12) is disposed so as to be apart from the inner punch (11) in a radial direction perpendicular to the center axis (10) by a first space S1 which is larger than a plate thickness T of a cup longitudinal wall portion (A2). Further, an inner peripheral surface of the outer punch (12) has, on its die (13) side, a punch shoulder R portion (12A) widening as it goes toward the die (13). A cup bottom portion (A15) is sandwiched by the inner punch (11) and the die (13) while an outer peripheral surface of the inner punch (11) and an inner peripheral surface of the cup longitudinal wall portion (A2) are apart from each other by a second space S2, and drawing to radially reduce the cup longitudinal wall portion (A2) is performed by pushing the cup longitudinal wall portion (A2) toward the outer peripheral surface of the inner punch (11) by the outer punch (12) while making the outer punch (12) abut on the cup longitudinal wall portion (A2) from the punch shoulder portion (12A), whereby a surplus material is made to flow into a cup shoulder portion (A1) to thicken the cup shoulder portion (A1).
摘要翻译： 内冲头（11），外冲头（12）和模具（13）设置在相同的中心轴线（10）上。 外冲头（12）以与中心轴线（10）垂直的径向离开内冲头（11），第一空间S1大于杯纵壁（10）的板厚T 部分（A2）。 此外，外冲头（12）的内周面在其模具（13）侧具有在朝向模具（13）的状态下加宽的冲压台肩部（12A）。 内部冲头（11）的外周面和杯状纵壁部（A2）的内周面分开时，杯内底部（A15）被内冲头（11）和冲模（13）夹持， 通过第二空间S2彼此相对，并且通过外部冲头将杯纵向壁部（A2）推向内冲头（11）的外周表面，从而使杯纵向壁部（A2）径向缩小， （12），同时使外冲头（12）从冲头肩部（12A）抵靠在杯纵壁部（A2）上，由此使多余的材料流入杯肩部（A1）以使杯增厚 肩部（A1）。
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公开(公告)号：US20170348763A1
公开(公告)日：2017-12-07
申请号：US15535301
申请日：2016-01-07
IPC分类号： B21K1/30 , F16H55/17 , B21D53/28 , B23K20/02 , B23K20/00 , B21J5/12 , B23P15/14 , B23K101/00
摘要： A method of manufacturing a mechanical part of the present invention includes a first process of forming, by performing a folding processing to an end portion of the material, a portion to be processed having a structure, in which a plurality of layers respectively having a thickness corresponding to a plate thickness of a material overlap each other, in the material such that a plate thickness direction of the layer is orthogonal to a plate thickness direction of the material; and a second process of changing, by performing a forging processing to the portion to be processed, a shape of the portion to be processed to a target shape while press-welding the layers of the portion to be processed to each other by plastic deformation.
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公开(公告)号：US20180021836A1
公开(公告)日：2018-01-25
申请号：US15540899
申请日：2016-01-07
摘要： There is provided a method of manufacturing a tooth-shaped component including drawing process of draw-forming a workpiece so as to obtain a cylindrical container which has a bottom surface portion and a side surface portion; diameter-reducing process of reducing a diameter of a particular part in which a tooth tip portion is to be formed in the side surface portion of the cylindrical container, so as to increase a thickness of a corner portion such that an external shape of the corner portion between the bottom surface portion and the side surface portion satisfies the following conditional expression (1); and tooth shape-forming process of forming the tooth tip portion in the particular part of the cylindrical container reduced in diameter in the diameter-reducing process, so as to obtain a tooth-shaped component which has the bottom surface portion, the side surface portion, and the tooth tip portion. (ΔR+ΔH)≦2t (1)
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公开(公告)号：US20170106431A1
公开(公告)日：2017-04-20
申请号：US15309345
申请日：2015-04-20
CPC分类号： B21J13/025 , B21D22/025 , B21D22/06 , B21D51/02 , B21J5/025 , B21J5/08 , B21K23/00 , B29C33/485
摘要： A forming die includes: a lower forming die having a bottom part and a side wall part; an upper forming die that is movable toward the bottom part of the lower forming die along an axis parallel to the side wall part of the lower forming die; and a push-in die that is movable toward the bottom part of the lower forming die along the axis between the side wall part of the lower forming die and the upper forming die.
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公开(公告)号：US20170100761A1
公开(公告)日：2017-04-13
申请号：US15311883
申请日：2015-05-13
CPC分类号： B21D22/20 , B21D22/06 , B21D24/00 , B30B15/0094
摘要： A press forming method includes a first process of obtaining a pressing force applied to each portion of a tool by an workpiece material during press forming while independently driving the respective each portion of the tool divided into multiple portions and press forming the workpiece material, and a second process of adjusting at least one of an applied driving force, an applied driving speed, and an applied driving timing for each portion of the tool to cause a processing portion of the workpiece material in which the state approaching an overload state is detected based on the pressing force to flow to other processing portions of the workpiece material.
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公开(公告)号：US20150336152A1
公开(公告)日：2015-11-26
申请号：US14653153
申请日：2013-12-27
IPC分类号： B21D24/00
CPC分类号： B21D24/005 , B21D22/28
摘要： A press-forming method includes: a step of forming a first cup-shaped workpiece (B); a step of moving an axial pressing punch (13) relatively to a die (15) to abut on a cup opening end (B21) of a cup sidewall portion (B2), and while constraining the cup opening end (B21), moving a second-stage forming punch (11) relatively to the die (15) to insert the second-stage forming punch (11) into a second die hole portion (155), and pushing a part of the first cup-shaped workpiece into the second die hole portion (155) through a second die shoulder portion (154), to thereby reduce the cup sidewall portion (B2) in diameter and thicken the cup sidewall portion (B2); and a step of, in a state of the constraint of the cup opening end (B21) by the axial pressing punch (13) being released, moving the second-stage forming punch (11) relatively to the die (15) and further pushing the first cup-shaped workpiece deeper in the second die hole portion (155), to thereby form a second cup-shaped workpiece smaller in diameter than the first cup-shaped workpiece.
摘要翻译： 一种压制成型方法包括：形成第一杯状工件（B）的步骤; 相对于模具（15）移动轴向按压冲头（13）以抵接在杯侧壁部（B2）的杯状开口端（B21）上的步骤，同时约束杯状开口端（B21），移动 第二级成型冲头（11）相对于模具（15）将第二级成型冲头（11）插入第二模孔部分（155）中，并将第一杯状工件的一部分推入第二模制孔 通过第二模具肩部（154）的模孔部（155），从而减小杯侧壁部（B2）直径并使杯侧壁部（B2）变厚。 并且在通过所述轴向推压冲头（13）被释放的杯开口端（B21）约束的状态下，相对于所述模具（15）移动所述第二级成形冲头（11）并进一步推动 所述第一杯形工件在所述第二模孔部分（155）中更深，从而形成直径小于所述第一杯形工件的第二杯形工件。
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