Taper cutting control method and control system in wire-cut electric
discharge machine
    31.
    发明授权
    Taper cutting control method and control system in wire-cut electric discharge machine 失效
    线切割放电机切割控制方法及控制系统

    公开(公告)号:US4843203A

    公开(公告)日:1989-06-27

    申请号:US208859

    申请日:1988-06-14

    IPC分类号: B23H7/06

    CPC分类号: B23H7/065

    摘要: To permit machining of a workpiece into a highly accurate tapered configuration, a wire-cutting EDM including a numerical controller that reads programmed shape data is utilized. To precisely taper the workpiece, it is necessary to move the upper and lower guides of the wire so that they start and stop moving simultaneously. From the programmed shape data, the respective speeds of the upper and lower guides are computed. The upper guid is interpolated by the upper guide speed, and the lower guide is interpolated by the lower guide speed so that the guides can start and stop moving simultaneously.

    摘要翻译: 为了允许将工件加工成高度精确的锥形构造,使用包括读取编程形状数据的数字控制器的线切割线。 为了精确地使工件变细,必须移动导线的上下引导件,使其同时起动和停止。 根据编程的形状数据,计算上和下导轨的相应速度。 上引导通过上引导速度进行内插,下引导通过较低的引导速度进行内插,使得引导件可以同时启动和停止移动。

    Method of measuring flexure value of wire electrode
    32.
    发明授权
    Method of measuring flexure value of wire electrode 失效
    线电极挠曲值测量方法

    公开(公告)号:US4622450A

    公开(公告)日:1986-11-11

    申请号:US696487

    申请日:1985-01-30

    CPC分类号: B23H7/065

    摘要: A method of automatically measuring the flexure value of a wire electrode 1 in a wire-cut electric discharge machine is disclosed.At a measurement point in the course of electric discharge machining, the electric discharge is temporarily stopped, and whether or not the wire electrode 1 and a workpiece 2 come into contact is sensed by a contact sensing device 107a. The wire electrode 1 and the workpiece 2 are moved relatively to advance or retreat in accordance with the sensed touch signal TS, and the distance .epsilon..sub.1 of movement until the contact state changes, is measured. The flexure value .epsilon. is obtained calculatively from the measured movement distance .epsilon..sub.1.

    Method of reducing wire-cut electric discharge machining errors
    33.
    发明授权
    Method of reducing wire-cut electric discharge machining errors 失效
    减少断线放电加工误差的方法

    公开(公告)号:US4546227A

    公开(公告)日:1985-10-08

    申请号:US413381

    申请日:1982-08-25

    IPC分类号: B23H7/06 C25B1/16

    CPC分类号: B23H7/065

    摘要: A method of controlling a wire-cut electric discharge machine to prevent cutting errors when cutting a corner CN which are caused by flexing of a wire electrode 1 during electric discharge cutting of a workpiece. Electric discharge is stopped when a rectilinear slot is cut to measure an amount of flexing of the wire electrode 1, and then the measured amount of flexing is used to effect an arithmetic operation to calculate a commanded speed or an interval of time in which relative movement between the wire electrode and the workpiece is arrested at the corner CN. The corner CN is cut under the control of the calculated commanded speed or interval of time in which the relative movement is arrested.

    摘要翻译: PCT No.PCT / JP81 / 00344 Sec。 371日期1982年8月25日 102(e)日期1982年8月25日PCT提交1981年11月18日PCT公布。 出版物WO82 / 02164 日本1982年7月8日。一种控制切断放电加工机的方法,以防止在切割工件的放电切割期间由线电极1弯曲引起的角部CN切割时的切割误差。 当切割直线槽以测量线电极1的弯曲量时,停止放电,然后使用测量的弯曲量进行算术运算,以计算指令速度或相对运动的时间间隔 导线电极和工件之间的夹角在CN处。 拐角CN在计算出的指令速度或相对运动停止的时间间隔的控制下被切割。

    Wire-cut electric discharge machine controller for compensating the
machining cornering parameters
    34.
    发明授权
    Wire-cut electric discharge machine controller for compensating the machining cornering parameters 失效
    线切割放电机控制器,用于补偿加工转弯参数

    公开(公告)号:US4523073A

    公开(公告)日:1985-06-11

    申请号:US413383

    申请日:1982-08-25

    摘要: A cutting control method for reducing cutting errors at a corner due to flexing of a wire electrode in a wire-cut electric discharge machine in which a voltage is applied between the wire electrode and a workpiece to cut the latter with electric discharge energy while moving the workpiece relatively to the wire electrode based on cutting command data for cutting the workpiece to a predetermined shape. An amount of override (K) is determined by an override arithmetic unit (103b) using data (r) on the radius of curvature of a corner angle (.theta.) data which are given as the cutting command data from a paper tape (101). A relative speed (F) is derived by a relative speed arithmetic unit (103f) from the amount of override (K) and a commanded feeding speed (F.sub.0). Motors (MX, MY) are rotated by pulse distributors (105X, 105Y) and servo circuits (SVX, SVY), respectively, based on the relative speed (F) which is lower than the commanded feeding speed (F.sub.0) to move the workpiece with respect to the wire electrode for electric discharge cutting of the corner.

    摘要翻译: PCT No.PCT / JP81 / 00421 Sec。 371日期1982年8月25日 102(e)日期1982年8月25日PCT提交1981年12月28日PCT公布。 公开号WO82 / 02355 日本1982年7月22日。一种切割控制方法,用于减少在线切割放电加工机中的线电极弯曲的拐角处的切割误差,其中在线电极和工件之间施加电压以切断线 具有放电能量,同时基于用于将工件切割成预定形状的切割命令数据,相对于线电极移动工件。 使用从作为来自纸带(101)的切割命令数据给出的角角(theta)数据的曲率半径的数据(r),由超控运算单元(103b)确定覆盖量(K) 。 通过相对速度运算单元(103f)根据超驰量(K)和指令进给速度(F0)导出相对速度(F)。 基于低于指令进给速度(F0)的相对速度(F),电机(MX,MY)分别由脉冲分配器(105X,105Y)和伺服电路(SVX,SVY)旋转,以移动工件 相对于用于角落的放电切割的线电极。

    System for restoring numerically controlled machine tool to former
condition
    35.
    发明授权
    System for restoring numerically controlled machine tool to former condition 失效
    将数控机床恢复到前一种状态的系统

    公开(公告)号:US4484287A

    公开(公告)日:1984-11-20

    申请号:US304903

    申请日:1981-09-23

    摘要: A system for restoring a numerically controlled machine tool to its former condition after a power interruption, the numerical control system being of the type in which a position sensor senses the current position of a movable member or of a drive motor of the machine tool and generates a current position signal in accordance with said current position, the movable member being positioned on the basis of a commanded position signal and the current position signal. The positional control information which prevails immediately prior to an interruption in the electric power which is applied to the machine tool and to the numerical control device is stored in a non-volatile memory before the power interruption occurs. When the electric power is reintroduced, the positional control information is read out of the non-volatile memory, and the movable member is returned to the position which it occupied immediately prior to the power interruption, this being accomplished on the basis of the positional control information and the current position signal.

    摘要翻译: 一种用于在电力中断之后将数控机床恢复到其前一状态的系统,数字控制系统是位置传感器感测机床的可动构件或驱动电机的当前位置并产生的类型 根据所述当前位置的当前位置信号,基于命令位置信号和当前位置信号来定位可移动部件。 在电力中断发生之前,将施加到机床和数控装置的电力中断之前的位置控制信息存储在非易失性存储器中。 当重新引入电力时,从非易失性存储器中读出位置控制信息,并且可移动部件返回到其在电力中断之前立即占据的位置,这是基于位置控制 信息和当前位置信号。

    Wire-cut electric discharge machining control method
    36.
    发明授权
    Wire-cut electric discharge machining control method 失效
    线切割放电加工控制方法

    公开(公告)号:US4467166A

    公开(公告)日:1984-08-21

    申请号:US385377

    申请日:1982-05-26

    IPC分类号: B23H7/06 B23P1/12

    CPC分类号: B23H7/065

    摘要: A wire-cut electric discharge machining control method which enables the corner portion at the intersection of first and second tapered surfaces of a workpiece to be cut into a tapered surface of oblique cylindrical shape. With the present invention, the tapered surface of oblique cylindrical shape is formed between the first and second tapered surfaces by entering command data for the radius r of the oblique cylindrical tapered surface in addition to positional control information for cutting the first and second tapered surfaces, computing a pair of points Q and R where the oblique cylindrical tapered surface meets the first and second tapered surfaces from the positional control information and radius, and cutting the tapered surface of oblique cylindrical shape between the points Q and R.

    摘要翻译: PCT No.PCT / JP81 / 00271 Sec。 371日期1982年5月26日 102(e)日期1982年5月26日PCT提交1981年10月8日PCT公布。 第WO82 / 01147号公报 日期:1982年04月15日。一种线切割放电加工控制方法,其能够将工件的第一和第二锥形面的交点处的角部切割成倾斜圆筒形的锥形表面。 通过本发明,除了用于切割第一和第二锥形表面的位置控制信息之外,通过输入倾斜圆柱形锥形表面的半径r的命令数据,在第一和第二锥形表面之间形成倾斜圆柱形的锥形表面, 根据位置控制信息和半径计算一对点Q和R,其中倾斜圆柱形锥形表面与第一和第二锥形表面相交,并且在点Q和R之间切割倾斜圆柱形的锥形表面。

    Ultra high-strength hydraulic cement compositions
    40.
    发明授权
    Ultra high-strength hydraulic cement compositions 有权
    超高强度水泥水泥组合物

    公开(公告)号:US07259197B2

    公开(公告)日:2007-08-21

    申请号:US10976188

    申请日:2004-10-27

    IPC分类号: C04B24/26

    摘要: An ultra high-strength hydraulic cement composition contains a binder, fine aggregates, coarse aggregates, an antifoaming agent, water and a specified admixture and has a unit amount of the binder in the range of 480-1800 kg/m3. Water and the binder are contained at a ratio of 10-25% and the admixture is contained in the amount of 0.2-3.5 weight parts per 100 weight parts of the binder. The binder may be cement or a mixture of cement and a microscopic powder admixture. The admixture is one or more selected from reaction mixtures obtained by specified two processes and partially or completely neutralized substances obtained from such a reaction mixture through these two processes and also a specified third process. The specified two processes include initiating a radical copolymerization process of a radical polymerizable monomer mixture containing maleic anhydride and a monomer of a specified kind in a non-aqueous system in the presence of a non-aqueous radical initiator and stopping the radical copolymerization reaction in its midst while the inversion rate of polymerization is at a specified level by adding water to the reaction system to thereby obtain a reaction mixture. The specified third process is for partially or completely neutralizing the reaction mixture.

    摘要翻译: 超高强度水硬性水泥组合物含有粘合剂,细骨料,粗骨料,消泡剂,水和指定的混合物,并且粘合剂的单位量在480-1800kg / m 3的范围内, / SUP>。 水和粘合剂的含量为10-25%,混合物的含量为每100重量份粘合剂0.2-3.5重量份。 粘合剂可以是水泥或水泥和微粉末混合物的混合物。 该混合物是选自通过两种方法获得的反应混合物和通过这两种方法从这种反应混合物获得的部分或完全中和的物质以及特定的第三种方法中的一种或多种。 指定的两个方法包括在非水系自由基引发剂的存在下,在非水系统中引发含有马来酸酐和特定种类的单体的自由基聚合性单体混合物的自由基共聚方法,并将其中的自由基共聚反应停止 同时通过向反应体系中加入水从而获得反应混合物,聚合反转速率在规定的水平。 指定的第三种方法是部分或完全中和反应混合物。