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1. 发明授权

US5423369A Apparatus for and method of vacuum casting 失效
标题翻译：真空铸造设备及方法
公开(公告)号：US5423369A
公开(公告)日：1995-06-13
申请号：US75555
申请日：1993-06-24
申请人： Atsushi Ota , Minoru Uozumi , Shigeki Tamura , Hirokazu Onishi , Yasuyuki Arakawa
发明人： Atsushi Ota , Minoru Uozumi , Shigeki Tamura , Hirokazu Onishi , Yasuyuki Arakawa
IPC分类号： B22D18/06 , B22D17/12 , B22D18/02
CPC分类号： B22D18/06
摘要： In a method of vacuum casting molten metal sucked from a molten metal reservoir into a cavity held under a reduced pressure by opening a gate having been blocking the communication between the molten metal reservoir and the cavity, the trapping of gas and foreign matter in the cavity is effectively prevented. To this end, an accommodation space for accommodating gas and foreign matter is provided in the molten metal reservoir. The accommodation space is provided at a position from which the accommodated matter is not sucked into the cavity.
摘要翻译： PCT No.PCT / JP92 / 01387第 371日期：1993年6月24日 102（e）日期1993年6月24日PCT提交1992年10月26日PCT公布。出版物WO / 9307977 日本1994年4月29日。在通过打开已经阻塞熔融金属储存器和空腔之间的连通的闸门的真空铸造熔融金属从熔融金属储存器吸入到减压保持的空腔中的方法中，有效防止空腔内的气体和异物。为此，在熔融金属储存器中设置有用于容纳气体和异物的容纳空间。容纳空间设置在被容纳物未被吸入空腔的位置。

2. 发明授权

US5431212A Method of and apparatus for vacuum casting 失效
标题翻译：真空铸造的方法和装置
公开(公告)号：US5431212A
公开(公告)日：1995-07-11
申请号：US267901
申请日：1994-07-06
申请人： Yasuyuki Arakawa , Tamotsu Hasegawa , Atushi Ota , Minoru Uozumi
发明人： Yasuyuki Arakawa , Tamotsu Hasegawa , Atushi Ota , Minoru Uozumi
IPC分类号： B22D18/06 , B22D18/08 , B22D18/04
CPC分类号： B22D18/06
摘要： In a method of vacuum casting wherein when the molten metal previously introduced into a molten metal reservoir is fed into a cavity, the lowest head of the molten metal in the molten metal reservoir is held to be higher than the level of a sprue, so that the cycle time of casting may be shortened and the quality of cast products may be improved. To this end, the interior of the molten metal reservoir is held gas tight while the sprue is opened by a gate member of straight tubular shape.
摘要翻译：在真空铸造的方法中，当将先前引入熔融金属储存器中的熔融金属进料到空腔中时，熔融金属储存器中的熔融金属的最低头部被保持为高于浇道的水平，使得可以缩短铸造的循环时间，并且可以提高铸造产品的质量。为此，熔融金属储存器的内部保持气密，同时浇口由直管状的浇口构件打开。

3. 发明授权

US5427170A Vacuum casting apparatus and method 失效
标题翻译：真空铸造装置及方法
公开(公告)号：US5427170A
公开(公告)日：1995-06-27
申请号：US272160
申请日：1994-07-08
申请人： Yasuyuki Arakawa , Tamotsu Hasegawa , Atushi Ota , Minoru Uozumi
发明人： Yasuyuki Arakawa , Tamotsu Hasegawa , Atushi Ota , Minoru Uozumi
IPC分类号： B22D17/22 , B22D18/02 , B22D18/06 , B22D18/04
CPC分类号： B22D18/06
摘要： A vacuum casting apparatus includes a plurality of pressure pins arranged in a molding cavity, and at least one pressure pin is located in a portion of the molding cavity farthest from a gate. The pressure pins are operated to pressurize the molding cavity in an order from the pressure pin located farthest from the gate to a pressure pin located nearest to the gate. A cross-sectional area reduced portion can also be formed in a portion of a runner connecting the molding cavity and the molten metal retaining dome. A molten metal in the molding cavity is thereby suppressed from flowing backward into the molten metal retaining dome when being pressurized by the pressure pins, so that the quality of the cast products is improved.
摘要翻译：真空铸造装置包括布置在模制腔中的多个压力销，并且至少一个压力销位于距离浇口最远的模制腔的一部分中。压力销被操作以从位于最远离门的压力销到位于最靠近门的压力销的顺序上的顺序对成型腔加压。横截面减小部分也可以形成在连接模制腔和熔融金属保持圆顶的流道的一部分中。由此，当通过压销加压时，模制腔中的熔融金属被抑制回流入熔融金属保持拱顶，从而提高了铸造产品的质量。

4. 发明授权

US5404928A Vacuum casting method 失效
标题翻译：真空铸造法
公开(公告)号：US5404928A
公开(公告)日：1995-04-11
申请号：US263083
申请日：1994-06-21
申请人： Atsushi Ota , Tamotsu Hasegawa , Yasuyuki Arakawa
发明人： Atsushi Ota , Tamotsu Hasegawa , Yasuyuki Arakawa
IPC分类号： B22D18/06 , B22D27/11 , B22D18/04
CPC分类号： B22D27/11 , B22D18/06
摘要： In a vacuum casting method, a mold cavity is reduced in pressure to a vacuum, and when a gate is opened, a molten metal which has been raised to a molten metal retaining dome is charged into the cavity at a high speed. When a portion of a molten metal held in a molten metal holding furnace is raised to the molten metal retaining dome, an upper surface of the molten metal is moved downwardly and upwardly through at least one cycle in the molten metal retaining dome, or a swirl flow is generated in the molten metal in a stalk. Such a unique motion as the downward and upward motion or the swirl flow effectively operates to detach solid metal pieces from an inside surface of the molten metal retaining dome or the stalk to push them to an upper portion of the molten metal. As a result, the detached metal pieces are prevented from being charged into the mold cavity to thereby cause defects in a cast product.
摘要翻译：在真空铸造方法中，模腔的压力降低到真空，当打开浇口时，已经升高到熔融金属保持圆顶的熔融金属以高速加入到空腔中。当保持在熔融金属保持炉中的熔融金属的一部分升高到熔融金属保持圆顶时，熔融金属的上表面在熔融金属保持圆顶中至少一个循环向下和向上移动，或者涡流在茎中的熔融金属中产生流动。作为向下运动或向上运动或涡流的这种独特运动有效地用于将固体金属片从熔融金属保持圆顶或茎的内表面分离以将其推到熔融金属的上部。结果，防止分离的金属片被装入模腔中，从而导致铸造产品中的缺陷。

5. 发明授权

US5462107A Vacuum casting method 失效
标题翻译：真空铸造法
公开(公告)号：US5462107A
公开(公告)日：1995-10-31
申请号：US266549
申请日：1994-06-28
申请人： Tamotsu Hasegawa , Yasuyuki Arakawa , Atushi Ota
发明人： Tamotsu Hasegawa , Yasuyuki Arakawa , Atushi Ota
IPC分类号： B22D18/08 , B22D18/06 , B22D18/04
CPC分类号： B22D18/06
摘要： In a vacuum casting method, a molding cavity is reduced in pressure to a vacuum, and when a gate is opened, a molten metal which has been raised to a molten metal retaining dome is charged into the molding cavity at a high speed. When a portion of a molten metal held in a molten metal holding furnace is raised to the molten metal retaining dome via a stalk, (1) the rising speed of a portion of the molten metal is set at 5-10 cm/sec, or (2) the rising speed is varied between an early stage of the rising motion and a later stage of the rising motion. In the latter method, the rising speed at the early stage of the rising motion is set at a speed higher than 10 cm/sec, while the rising speed at the later stage of the rising motion is set at 5-10 cm/sec. Due to the rising speed control, air involvement by the rising molten metal is effectively prevented.
摘要翻译：在真空铸造方法中，模制空腔的压力降低到真空，当打开浇口时，已经升高到熔融金属保持圆顶的熔融金属以高速加入到模腔中。当保持在熔融金属保持炉中的熔融金属的一部分经由柄杆升高到熔融金属保持拱顶时，（1）将熔融金属的一部分的上升速度设定为5-10cm / sec，或（2）上升速度在上升运动的早期阶段与上升运动的后期阶段不同。在后一种方法中，将上升运动的早期阶段的上升速度设定为高于10cm / sec的速度，而将上升运动的后期的上升速度设定为5-10cm / sec。由于速度控制的上升，有效地防止了上升的熔融金属对空气的影响。

6. 发明申请

US20080115552A1 METHOD OF PLASTICALLY FORMING SPLINES ON SHAFT-LIKE WORKPIECE 审中-公开
标题翻译：塑料制品在类似工件上的方法
公开(公告)号：US20080115552A1
公开(公告)日：2008-05-22
申请号：US11935199
申请日：2007-11-05
申请人： Yasuyuki Arakawa
发明人： Yasuyuki Arakawa
IPC分类号： B21C23/00
CPC分类号： B21K1/12 , B21J5/12
摘要： A method of plastically forming splines on a shaft-like workpiece is provided. The volume of part of the shaft-like workpiece on which the splines are plastically formed is generally the same as the volume of plastically processed portion following processing. In addition, the part on which the splines are formed first is made with a maximum diameter. The shaft-like workpiece extends from the first formed part toward the part that is not plastically processed in a conical shape.
摘要翻译：提供了在轴状工件上塑性地形成花键的方法。其上形成有花键的轴状工件的一部分的体积通常与后续处理的塑性处理部分的体积相同。此外，首先形成花键的部分由最大直径制成。轴状工件从第一成形部向未被塑性处理的部分呈锥形延伸。

7. 发明授权

US5454416A Vacuum casting apparatus 失效
标题翻译：真空铸造设备
公开(公告)号：US5454416A
公开(公告)日：1995-10-03
申请号：US266780
申请日：1994-06-29
申请人： Atushi Ota , Yasuyuki Arakawa , Tamotsu Hasegawa
发明人： Atushi Ota , Yasuyuki Arakawa , Tamotsu Hasegawa
IPC分类号： B22D27/09 , B22D18/06 , B22D18/02 , B22D18/04
CPC分类号： B22D18/06
摘要： A vacuum casting apparatus in which a molding cavity is reduced in pressure substantially to a vacuum, and upon opening a gate, a molten metal which has been raised to a molten metal retaining dome is charged into the molding cavity via a runner at a high speed. The runner has a first portion making a pool of molten metal, a second portion connecting the molten metal retaining dome to the first portion, and a third portion connecting the first portion to the molding cavity. A pin is slidably provided in the first portion of the runner. An opening of the second portion of the runner to the first portion is located nearer to the pin than an opening of the third portion of the runner to the first portion. When the pin is moved into the first portion of the runner, the pin first closes the opening of the second portion and then begins to apply pressure the molten metal in the molding cavity.
摘要翻译：一种真空铸造装置，其中模制腔的压力基本上减小到真空，并且在打开浇口时，已经升高到熔融金属保持圆顶的熔融金属通过高速运转的流道装入模腔中。流道具有制造熔融金属池的第一部分，将熔融金属保持圆顶连接到第一部分的第二部分，以及将第一部分连接到模制腔的第三部分。销可滑动地设置在跑步者的第一部分中。流道的第二部分到第一部分的开口位于比第一部分的流道的第三部分的开口更靠近销的位置。当销移动到流道的第一部分中时，销先关闭第二部分的开口，然后开始对模腔中的熔融金属施加压力。

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