公开(公告)号：US5235155A

公开(公告)日：1993-08-10

申请号：US592818

申请日：1990-10-04

申请人： Osamu Yamada ,  Hisaaki Yamane ,  Kunio Kohsaka

发明人： Osamu Yamada ,  Hisaaki Yamane ,  Kunio Kohsaka

IPC分类号： B23K10/00 ,  H05H1/34

CPC分类号： H05H1/3405 ,  H05H2001/3468 ,  H05H2001/3478

摘要： The plasma cutting device of the present invention comprises a plurality of release ports for releasing the work gas to prevent adverse influence on the cutting processing besides the exhaust port for jetting the gas toward the work. Accordingly the flow rate and velocity of the swirl flow are increased and the flow rate of the jet gas is still kept the same as that in the conventional device, resulting in stabilizing the plasma arc and performing superior cutting.

摘要翻译： 本发明的等离子切割装置包括多个用于释放工作气体的释放口，以防止除了将气体朝向工件喷射的排气口之外对切割加工的不利影响。 因此，涡流的流量和速度增加，并且喷射气体的流量仍然保持与常规装置相同，导致等离子体电弧稳定并且执行优异的切割。

公开(公告)号：US4983807A

公开(公告)日：1991-01-08

申请号：US529480

申请日：1990-05-29

申请人： Osamu Yamada ,  Hisaaki Yamane ,  Kunio Kohsaka

发明人： Osamu Yamada ,  Hisaaki Yamane ,  Kunio Kohsaka

IPC分类号： B23K10/00

CPC分类号： B23K10/006

摘要： In a plasma cutting apparatus for cutting a workpiece with a plasma arc, a cutting torch moves relative to the workpiece. The cutting torch produces plasma arc in accordance with a cutting current supplied thereto. To improve surface roughness of the cut facet of the workpiece, a pulsating current is superimposed on a D.C. current to provide the cutting current, wherein the frequency of the pulsating current is controlled in accordance with the moving speed of the cutting torch.

摘要翻译： 在用等离子弧切割工件的等离子切割装置中，切割炬相对于工件移动。 割炬根据供给的切割电流产生等离子体电弧。 为了改善工件的切割面的表面粗糙度，将脉动电流叠加在直流电流上以提供切割电流，其中根据割炬的移动速度来控制脉动电流的频率。

公开(公告)号：US4873756A

公开(公告)日：1989-10-17

申请号：US8654

申请日：1987-01-30

申请人： Hisaaki Yamane ,  Noboru Hirose

发明人： Hisaaki Yamane ,  Noboru Hirose

IPC分类号： B23Q3/157

CPC分类号： B23Q3/15706 ,  B23Q3/15534 ,  Y10T29/5107 ,  Y10T408/37 ,  Y10T483/1795

摘要： A machine tool with a vertically reciprocating spindle head has an automatic tool changer including a rotatingly indexable tool support connected to the machine tool frame and vertically movable independently of the spindle head, a first cam-and-crank mechanism activated by spindle head vertical movement to move the tool support with the spindle head during a first portion of the tool changing operation and away from the spindle head during a second portion of the tool changing operation, a second cam-and-crank mechanism also activated by spindle head vertical movement for opening and closing a tool holder on the tool support during another portion of the tool changing operation, a tool holder with a pair of rotatably supported L-shaped fingers which hold a tool in a substantially perpendicular direction to the axes of finger rotation, a tool taking device for taking a tool out of a tool magazine, and a vertical stop for preventing vertical movement of the tool support with the spindle head into the machining region.

摘要翻译： 具有垂直往复式主轴头的机床具有自动换刀器，其包括连接到机床框架的可旋转定位的工具支撑件，并且可独立于主轴头垂直移动;第一凸轮和曲柄机构，通过主轴头垂直运动而启动 在刀具更换操作的第一部分期间，使用主轴头移动刀具支撑件，并且在刀具更换操作的第二部分期间远离主轴头移动刀具支撑件，还通过主轴头垂直运动来启动的第二凸轮和曲柄机构用于打开 以及在所述换刀操作的另一部分期间将所述工具架上的工具夹紧件关闭;具有一对可旋转地支撑的L形指状物的工具架，所述手指保持在与所述手指旋转轴线基本垂直的方向上的工具， 用于将刀具从工具仓中取出的装置，以及用于防止工具支架与主轴垂直移动的垂直挡块 进入加工区域。

公开(公告)号：US5091625A

公开(公告)日：1992-02-25

申请号：US653300

申请日：1991-02-11

申请人： Masahiro Kohda ,  Osamu Yamada ,  Hisaaki Yamane

发明人： Masahiro Kohda ,  Osamu Yamada ,  Hisaaki Yamane

IPC分类号： B23K9/32 ,  B23K10/00 ,  H05H1/34

CPC分类号： H05H1/34 ,  B23K10/006 ,  B23K9/32 ,  B23K9/328 ,  H05H2001/3457

摘要： A plasma arc workpiece cutting device having means for removing a deposited material deposited onto a nozzle of a plasma torch. During plasma arc cutting operation, molten spatters may be directed toward the plasma torch and may be adhered onto the nozzle. The deposited material is removed by way for removing the deposited material. At every proper intervals, the plasma torch is moved toward the removing structure, and the deposited material is brought into sliding contact therewith in order to frictionally remove the deposited material from the nozzle. A control system is provided for moving the plasma torch at every proper timings so as to perform the deposited material removing operation.

摘要翻译： 一种等离子弧工件切割装置，具有用于去除沉积在等离子体焰炬的喷嘴上的沉积材料的装置。 在等离子体电弧切割操作期间，熔融溅射可以被引导到等离子体焰炬并且可以粘附到喷嘴上。 通过去除沉积的材料去除沉积的材料。 每隔适当的间隔，等离子体焰炬朝向移除结构移动，并且沉积的材料与其滑动接触，以便从喷嘴摩擦地移除沉积的材料。 提供了一种控制系统，用于在每个适当的时刻移动等离子体焰炬，以执行沉积材料去除操作。

公开(公告)号：US5043554A

公开(公告)日：1991-08-27

申请号：US495701

申请日：1990-03-19

申请人： Kunio Kohsaka ,  Osamu Yamada ,  Hisaaki Yamane

发明人： Kunio Kohsaka ,  Osamu Yamada ,  Hisaaki Yamane

IPC分类号： B23K10/00

CPC分类号： B23K10/006

摘要： A plasma-arc cutting apparatus having a plasma torch producing a plasma arc and cutting a workpiece with the plasma arc, the plasma torch including a nozzle from whcih the plasma arc is ejected toward the workpiece; a feed device moving the plasma torch relative to the workpiece; a magnetic-field forming device producing a magnetic filed, and applying the magnetic field to the plasma arc so as to intersect the plasma arc and thereby deflect the arc; a first control device numerically controlling the feed device according to cutting operation information, the cutting operation information including cutting path data representative of a predetermined curved cutting path along which the plasma torch is moved over the workpiece, the first control means providing torch position data representative of a current position of the plasma torch relative to the workpiece; and a second control device controlling the magnetic-field forming device according to the cutting operation information and the torch position data so that the plasma arc is deflected to an optimum direction with respect to a direction of movement from the current position of the plasma torch as the plasma torch is moved along the curved cutting path.

摘要翻译： 一种等离子体电弧切割装置，具有产生等离子体电弧的等离子体焰炬和用等离子体电弧切割工件，等离子体焰炬包括从等离子弧向工件喷射的喷嘴; 使等离子体焰炬相对于工件移动的送料装置; 产生磁场的磁场形成装置，并且将等离子体电弧施加到与等离子体电弧相交并从而使电弧偏转的磁场; 第一控制装置，根据切割操作信息数字地控制进给装置，切割操作信息包括代表等离子体焰炬在工件上移动的预定弯曲切割路径的切割路径数据，第一控制装置提供割炬位置数据代表 等离子体焰炬相对于工件的当前位置; 以及第二控制装置，根据切割操作信息和割炬位置数据控制磁场形成装置，使得等离子体电弧相对于从等离子体焰炬的当前位置的移动方向偏转到最佳方向，如 等离子体焰炬沿着弯曲的切割路径移动。