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公开(公告)号：US20050016246A1
公开(公告)日：2005-01-27
申请号：US10803231
申请日：2004-03-17
申请人： Shigeaki Yamanaka , Takeshi Kazama , Masahiro Dohi
发明人： Shigeaki Yamanaka , Takeshi Kazama , Masahiro Dohi
IPC分类号： B21C23/20 , B21C37/16 , B21J5/06 , B21J5/08 , B21J5/10 , B21J9/08 , B21K1/06 , B21K1/12 , B21J13/00
摘要： A hollow stepped article is formed from a solid blank to reduce the material cost, and cracking is prevented in a stepped portion of large diameter when a portion of the blank is deformed by its radial expansion. A hollow stepped shaft is formed by holding an upper and a lower part axially of a solid rod-like blank with an upper and a lower die, respectively, which have a stepped recess of large diameter in a region where they are opposed to each other; compressing the blank from both its axially opposite sides with an upper and a lower punch each of which is smaller in diameter than the blank, thereby extruding the blank so that an axial hollow is formed therein about its axis in each of its upper and lower parts and that a portion of the blank opposed to the stepped recess of large diameter expands in diameter and deforms into that recess while leaving a solid plug-like portion between the punches; and thereafter further compressively moving one of the punches to shear the solid plug-like portion and force it out of the blank, whereby the blank is formed with a stepped portion of large diameter by radially expanding deformation in a region intermediate between its opposed ends or at one of these ends and with a continuous axial hollow about its axis.
摘要翻译： 由实心坯料形成中空阶梯制品，以减少材料成本，并且当坯料的一部分通过其径向膨胀变形时，可以防止在大直径的阶梯部分中的开裂。 通过在具有上模和下模的实心棒状坯料的轴向保持上下两部分而形成中空阶梯轴，所述上模和下模分别具有彼此相对的区域中的大直径的阶梯形凹部 ; 通过上下冲头将坯料从其两个轴向相对的两侧压缩，每个上冲头和下冲头的直径小于坯件直径，从而挤压坯件，使得在其上部和下部各自的轴上形成轴向中空 并且与大直径的阶梯式凹槽相对的坯料的一部分直径扩大并变形成该凹槽，同时在冲头之间留下固体塞状部分; 然后进一步压缩移动其中一个冲头以剪切固体塞状部分并将其压出坯料，由此坯料通过在其相对端之间的区域中径向膨胀变形而形成有大直径的阶梯部分，或 在其中一个端部处并且围绕其轴线具有连续的轴向中空。
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公开(公告)号：US07134312B2
公开(公告)日：2006-11-14
申请号：US10713168
申请日：2003-11-13
申请人： Shigeaki Yamanaka , Takeshi Kazama
发明人： Shigeaki Yamanaka , Takeshi Kazama
CPC分类号： B21D37/14
摘要： Improved die arrangements are provided whereby both an upper die and a lower die can easily be loaded into and unloaded from their respective die holders in a die exchanging operation. An improved die apparatus in a pressing machine in which an upper die set is securely loaded in an upper die holder fastened to a slide side for a pressing operation, comprises an arrangement whereby the upper die set is held in the upper die holder so that the upper die set can be extracted downwards from the upper die holder, wherein the upper die holder is provided with stopper means adapted to engage with the upper die set to hold the upper die set in place and adapted to disengage from the upper die set to allow the upper die set to disengage from the upper die holder.
摘要翻译： 提供了改进的模具布置，由此在模具更换操作中，上模具和下模具都可以容易地从其相应的模具座装载和卸载。 一种压制机中的改进的模具装置，其中上模具牢固地装载在紧固在滑动侧的上模夹持器用于按压操作，包括上模具被保持在上模夹持器中的布置，使得 上模具可以从上模夹持器向下抽出，其中上模夹具设置有止动装置，其适于与上模组接合以将上模组固定就位并适于与上模组脱离以允许 上模具设置成与上模夹具脱离接触。
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公开(公告)号：US20050103089A1
公开(公告)日：2005-05-19
申请号：US10713168
申请日：2003-11-13
申请人： Shigeaki Yamanaka , Takeshi Kazama
发明人： Shigeaki Yamanaka , Takeshi Kazama
CPC分类号： B21D37/14
摘要： Improved die arrangements are provided whereby both an upper die and a lower die can easily be loaded into and unloaded from their respective die holders in a die exchanging operation. An improved die apparatus in a pressing machine in which an upper die set is securely loaded in an upper die holder fastened to a slide side for a pressing operation, comprises an arrangement whereby the upper die set is held in the upper die holder so that the upper die set can be extracted downwards from the upper die holder, wherein the upper die holder is provided with stopper means adapted to engage with the upper die set to hold the upper die set in place and adapted to disengage from the upper die set to allow the upper die set to disengage from the upper die holder.
摘要翻译： 提供了改进的模具布置，由此在模具更换操作中，上模具和下模具都可以容易地从其相应的模具座装载和卸载。 一种压制机中的改进的模具装置，其中上模具牢固地装载在紧固在滑动侧的上模夹持器用于按压操作，包括上模具被保持在上模夹持器中的布置，使得 上模具可以从上模夹持器向下抽出，其中上模夹具设置有止动装置，其适于与上模组接合以将上模组固定就位并适于与上模组脱离以允许 上模具设置成与上模夹具脱离接合。
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公开(公告)号：US20080060406A1
公开(公告)日：2008-03-13
申请号：US11900568
申请日：2007-09-12
申请人： Shigeaki Yamanaka , Takeshi Kazama
发明人： Shigeaki Yamanaka , Takeshi Kazama
CPC分类号： B21D53/845 , B21K1/08 , F01L1/047 , F01L2001/0475 , F01L2101/00 , F01L2103/00 , F01L2103/01 , Y10T29/49293
摘要： A hollow step-profiled shaft such as a cam shaft that is high in accuracy and excellent in productivity and requires little post-machining is being formed. To this end, a hollow stepped shaft 8 having its axis and large diameter portions 9a-12b intermediate axially between its ends is formed by a forming process in which each large diameter portion of the shaft is compressed with forming dies 32a-32d from at least three different directions approximately simultaneously towards the axis to shape the large diameter portion with a profile such as to conform to contours 38a-38d of a cavity 38 formed in a region of tips of the forming dies 32a-32d.
摘要翻译： 形成了精度高，生产率高，需要少量后加工的凸轮轴等中空阶梯型轴。 为此，通过成形工艺形成具有其轴线和大直径部分9a-12b的中空阶梯轴8，其中轴的每个大直径部分被成形模具32a-32压缩 d从至少三个不同的方向近似同时朝向轴线，以使具有轮廓的大直径部分成形，以符合形成在成形模具32a-32的尖端区域中的空腔38的轮廓38a-38d d。
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公开(公告)号：US20080127704A1
公开(公告)日：2008-06-05
申请号：US12024065
申请日：2008-01-31
申请人： Shigeaki Yamanaka , Takeshi Kazama , Masahiro Dohi
发明人： Shigeaki Yamanaka , Takeshi Kazama , Masahiro Dohi
摘要： A hollow stepped article is formed from a solid blank to reduce the material cost, and cracking is prevented in a stepped portion of large diameter when a portion of the blank is de-formed by its radial expansion. A hollow, stepped shaft is formed by holding an upper and a lower part axially of a solid rod-like blank with an upper and a lower die, respectively, which have a stepped recess of large diameter in a region where they are op-posed to each other; compressing the blank from both its axially opposite sides with an upper and a lower punch each of which is smaller in diameter than the blank, thereby extruding the blank so that an axial hollow is formed therein about its axis in each of its upper and lower parts and that a portion of the blank op-posed to the stepped recess of large diameter expands in diameter and deforms into that recess while leaving a solid plug-like portion between the punches; and thereafter further compressively moving one of the punches to shear the solid plug-like portion and force it out of the blank, whereby the blank is formed with a stepped portion of large diameter by radially expanding deformation in a region intermediate between its op-posed ends or at one of these ends and with a continuous axial hollow about its axis.
摘要翻译： 中空阶梯制品由实心坯料形成，以降低材料成本，并且当坯料的一部分通过其径向膨胀而形成时，在大直径的阶梯部分中防止开裂。 通过在具有上模和下模的实心棒状坯料的轴向上保持上部和下部部分而形成中空的阶梯轴，所述上模具和下模具在其所处的区域中分别具有大直径的阶梯形凹部 对彼此; 通过上下冲头将坯料从其两个轴向相对的两侧压缩，每个上冲头和下冲头的直径小于坯件直径，从而挤压坯件，使得在其上部和下部各自的轴上形成轴向中空 并且与大直径的阶梯式凹槽相对的坯料的一部分直径扩大并变形成该凹槽，同时在冲头之间留下固体塞状部分; 然后进一步压缩移动其中一个冲头以剪切固体塞状部分并将其压出坯料，由此坯料通过径向膨胀变形形成具有大直径的阶梯部分 端部或其中一个端部并且围绕其轴线具有连续的轴向中空。
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公开(公告)号：US07360388B2
公开(公告)日：2008-04-22
申请号：US11605568
申请日：2006-11-29
申请人： Shigeaki Yamanaka , Takeshi Kazama , Masahiro Dohi
发明人： Shigeaki Yamanaka , Takeshi Kazama , Masahiro Dohi
摘要： A hollow stepped article is formed from a solid blank to reduce the material cost, and cracking is prevented in a stepped portion of large diameter when a portion of the blank is deformed by its radial expansion. A hollow stepped shaft is formed by holding an upper and a lower part axially of a solid rod-like blank with an upper and a lower die, respectively, which have a stepped recess of large diameter in a region where they are opposed to each other; compressing the blank from both its axially opposite sides with an upper and a lower punch each of which is smaller in diameter than the blank, thereby extruding the blank so that an axial hollow is formed therein about its axis in each of its upper and lower parts and that a portion of the blank opposed to the stepped recess of large diameter expands in diameter and deforms into that recess while leaving a solid plug-like portion between the punches; and thereafter further compressively moving one of the punches to shear the solid plug-like portion and force it out of the blank, whereby the blank is formed with a stepped portion of large diameter by radially expanding deformation in a region intermediate between its opposed ends or at one of these ends and with a continuous axial hollow about its axis.
摘要翻译： 由实心坯料形成中空阶梯制品，以减少材料成本，并且当坯料的一部分通过其径向膨胀变形时，可以防止在大直径的阶梯部分中的开裂。 通过在具有上模和下模的实心棒状坯料的轴向保持上下两部分而形成中空阶梯轴，所述上模和下模分别具有彼此相对的区域中的大直径的阶梯形凹部 ; 通过上下冲头将坯料从其两个轴向相对的两侧压缩，每个上冲头和下冲头的直径小于坯件直径，从而挤压坯件，使得在其上部和下部各自的轴上形成轴向中空 并且与大直径的阶梯式凹槽相对的坯料的一部分直径扩大并变形成该凹槽，同时在冲头之间留下固体塞状部分; 然后进一步压缩移动其中一个冲头以剪切固体塞状部分并将其压出坯料，由此坯料通过在其相对端之间的区域中径向膨胀变形而形成有大直径的阶梯部分，或 在其中一个端部处并且围绕其轴线具有连续的轴向中空。
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公开(公告)号：US06941783B2
公开(公告)日：2005-09-13
申请号：US10703990
申请日：2003-11-06
申请人： Shigeaki Yamanaka , Takeshi Kazama
发明人： Shigeaki Yamanaka , Takeshi Kazama
CPC分类号： F15B11/0423 , B30B15/16 , F15B9/09 , F15B11/042 , F15B2211/20546 , F15B2211/30505 , F15B2211/30515 , F15B2211/30525 , F15B2211/3056 , F15B2211/3111 , F15B2211/327 , F15B2211/50581 , F15B2211/615 , F15B2211/6313 , F15B2211/6336 , F15B2211/6652 , F15B2211/7053 , F15B2211/7107 , F15B2211/7128 , F15B2211/75 , F15B2211/76
摘要： A double action oil hydraulic press is provided having a main cylinder for actuating a slide and a lower part forming cylinder for actuating a lower part forming unit, wherein the operations of the cylinders are controlled through the combined control of the rotation of an oil hydraulic pump of a power unit and servo valves whereby the amount of operation oil that must be used is reduced. To this end, the press comprises a power unit comprising a variable displacement oil hydraulic pump adapted to be driven by an inverter motor; controllable servo valves provided in hydraulic circuits connecting the power unit to the main cylinder and to the lower part forming cylinder, respectively; servo controllers for controlling the servo valves, respectively; cylinder pressure detecting sensors provided in the hydraulic circuits, respectively; position detecting sensors for sensing positions of the slide and the lower part forming unit, respectively; a control unit for furnishing the inverter motor of the power unit and the servo controllers with control signals, respectively, and means whereby respective sensing signals of the cylinder pressure and position detecting sensors are fed back to the control unit.
摘要翻译： 提供一种双作用油压机，其具有用于致动滑动件的主缸和用于致动下部形成单元的下部成形缸，其中通过油压泵的旋转的组合控制来控制气缸的操作 的动力单元和伺服阀，从而减少必须使用的操作油的量。 为此，压力机包括动力单元，其包括适于由逆变器马达驱动的可变排量油压泵; 液压回路中设置有可控伺服阀，分别将动力单元连接到主缸和下缸形成缸; 用于控制伺服阀的伺服控制器; 分别设置在液压回路中的气缸压力检测传感器; 位置检测传感器，用于分别检测滑块和下部形成单元的位置; 控制单元，用于分别提供具有控制信号的功率单元的逆变器电动机和伺服控制器，以及将气缸压力和位置检测传感器的各个感测信号反馈给控制单元的装置。
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公开(公告)号：US20070068215A1
公开(公告)日：2007-03-29
申请号：US11605568
申请日：2006-11-29
申请人： Shigeaki Yamanaka , Takeshi Kazama , Masahiro Dohi
发明人： Shigeaki Yamanaka , Takeshi Kazama , Masahiro Dohi
IPC分类号： B21J13/00
摘要： A hollow stepped article is formed from a solid blank to reduce the material cost, and cracking is prevented in a stepped portion of large diameter when a portion of the blank is deformed by its radial expansion. A hollow stepped shaft is formed by holding an upper and a lower part axially of a solid rod-like blank with an upper and a lower die, respectively, which have a stepped recess of large diameter in a region where they are opposed to each other; compressing the blank from both its axially opposite sides with an upper and a lower punch each of which is smaller in diameter than the blank, thereby extruding the blank so that an axial hollow is formed therein about its axis in each of its upper and lower parts and that a portion of the blank opposed to the stepped recess of large diameter expands in diameter and deforms into that recess while leaving a solid plug-like portion between the punches; and thereafter further compressively moving one of the punches to shear the solid plug-like portion and force it out of the blank, whereby the blank is formed with a stepped portion of large diameter by radially expanding deformation in a region intermediate between its opposed ends or at one of these ends and with a continuous axial hollow about its axis.
摘要翻译： 由实心坯料形成中空阶梯制品，以减少材料成本，并且当坯料的一部分通过其径向膨胀变形时，可以防止在大直径的阶梯部分中的开裂。 通过在具有上模和下模的实心棒状坯料的轴向保持上下两部分而形成中空阶梯轴，所述上模和下模分别具有彼此相对的区域中的大直径的阶梯形凹部 ; 通过上下冲头将坯料从其两个轴向相对的两侧压缩，每个上冲头和下冲头的直径小于坯件直径，从而挤压坯件，使得在其上部和下部各自的轴上形成轴向中空 并且与大直径的阶梯式凹槽相对的坯料的一部分直径扩大并变形成该凹槽，同时在冲头之间留下固体塞状部分; 然后进一步压缩移动其中一个冲头以剪切固体塞状部分并将其压出坯料，由此坯料通过在其相对端之间的区域中径向膨胀变形而形成有大直径的阶梯部分，或 在其中一个端部处并且围绕其轴线具有连续的轴向中空。
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公开(公告)号：US07171837B2
公开(公告)日：2007-02-06
申请号：US10803231
申请日：2004-03-17
申请人： Shigeaki Yamanaka , Takeshi Kazama , Masahiro Dohi
发明人： Shigeaki Yamanaka , Takeshi Kazama , Masahiro Dohi
IPC分类号： B21D28/00
摘要： A hollow stepped article is formed from a solid blank to reduce the material cost, and cracking is prevented in a stepped portion of large diameter when a portion of the blank is deformed by its radial expansion. A hollow stepped shaft is formed by holding an upper and a lower part axially of a solid rod-like blank with an upper and a lower die, respectively, which have a stepped recess of large diameter in a region where they are opposed to each other; compressing the blank from both its axially opposite sides with an upper and a lower punch each of which is smaller in diameter than the blank, thereby extruding the blank so that an axial hollow is formed therein about its axis in each of its upper and lower parts and that a portion of the blank opposed to the stepped recess of large diameter expands in diameter and deforms into that recess while leaving a solid plug-like portion between the punches; and thereafter further compressively moving one of the punches to shear the solid plug-like portion and force it out of the blank, whereby the blank is formed with a stepped portion of large diameter by radially expanding deformation in a region intermediate between its opposed ends or at one of these ends and with a continuous axial hollow about its axis.
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公开(公告)号：US07100417B2
公开(公告)日：2006-09-05
申请号：US10713167
申请日：2003-11-13
申请人： Shigeaki Yamanaka , Takeshi Kazama
发明人： Shigeaki Yamanaka , Takeshi Kazama
IPC分类号： B21J13/00
CPC分类号： B21D37/10
摘要： An improved lower die assembly is provided which allows a given lower die in a pressing machine to be replaced with another easily and in a short period of time relative to a die holder. In the lower die assembly in which a lower die is received and securely held in a die holder, the improvement comprises: a clamp means whereby the lower die when unclamped is received in the die holder so that the lower die can be extracted from the die holder upwards and then when clamped is securely held therein; and a lift means disposed below the lower die and whereby the lower die when unclamped is raised above an upper end of the die holder.
摘要翻译： 提供了一种改进的下模组件，其允许在压模机中给定的下模具相对于模具座容易地且在短时间段内被替换。 在其中下模具被容纳并牢固地保持在模具保持器中的下模组件中，改进包括：夹紧装置，其中当未夹紧的下模被容纳在模具保持器中，使得下模可以从模具中提取 然后当被夹紧牢固地固定在其中时; 以及设置在所述下模的下方的提升装置，并且由此当所述下夹具被抬起时，所述下模在所述模座的上端上方升高。
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