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    Numerical control method for five-axis processing machine
    1.
    发明公开
    Numerical control method for five-axis processing machine 有权
    五轴加工机床的数控方法

    公开(公告)号：EP2390738A1

    公开(公告)日：2011-11-30

    申请号：EP11178161.3

    申请日：2008-04-22

    申请人： FANUC CORPORATION

    发明人： Otsuki, Toshiaki ,  Ide, Soichiro ,  Miyazaki, Takeshi

    IPC分类号： G05B19/4103 ,  G05B19/404

    CPC分类号： G05B19/4103 ,  G05B19/404 ,  G05B2219/35158 ,  G05B2219/49344 ,  G05B2219/50297 ,  G05B2219/50336

    摘要： If the angle α formed between the interpolated cutting surface perpendicular direction vector (It, Jt, Kt) and the interpolated tool direction vector (Ttx, Tty, Ttz) becomes smaller, movement of a tool becomes unstable. In this case, the tool diameter compensation vector (TCx, TCy, TCz) is set to the tool diameter compensation vector calculated in the immediately previous interpolation cycle, thereby preventing unstable movement. Further, in case of a block instruction where a distance between positions in cutting point instructions is large whereas distance of movement of linear axis control point is small, an execessive cutting may occur. To deal with this problem, movement of linear axis control point in a current block is stopped or converted into linear movement so as to prevent a loop-shaped movement of the linear axis control point.

    摘要翻译： 如果内插切削表面垂直方向矢量（It，Jt，Kt）与内插工具方向矢量（Ttx，Tty，Ttz）之间形成的角度α变小，则工具的运动变得不稳定。 在这种情况下，刀具直径补偿矢量（TCx，TCy，TCz）被设置为在前一个插补周期中计算出的刀具直径补偿矢量，从而防止不稳定的运动。 此外，在切割点指令中的位置之间的距离大的线性指令的情况下，线性轴控制点的移动距离小的情况下，有可能产生过度的切削。 为了解决这个问题，当前程序段中的线性轴控制点的运动停止或转换成线性运动，以防止线性轴控制点的环形运动。

    METHOD FOR COMPUTING NORMAL VECTOR
    5.
    发明授权
    METHOD FOR COMPUTING NORMAL VECTOR 失效
    计算正态矢量的方法

    公开(公告)号：EP0276312B1

    公开(公告)日：1993-07-14

    申请号：EP87902778.7

    申请日：1987-05-12

    申请人： FANUC LTD.

    发明人： SEKI, Masaki ,  SAMUKAWA, Kouji

    IPC分类号： G05B19/403

    CPC分类号： G05B19/41 ,  G05B2219/34096 ,  G05B2219/50336 ,  G05B2219/50356

    摘要： Using data which specifies a three-dimensional curved surface (CSF), points are obtained on the three-dimensional curved surface so that they are arranged discretely in a first direction (direction of BC) and in a second direction (direction of CD); where, for example, the center of an arc (Pc) passing three successive points (Pi,j-1, Pi,j, Pi,j+1) in the first direction is obtained, and then a normal vector is computed, taking the direction of a line running from said center of arc toward a middle point (Pi,j) among said three points as a normal direction of said three-dimensional curved surface at said middle point.

    CYLINDER INTERPOLATION SYSTEM
    6.
    发明公开
    CYLINDER INTERPOLATION SYSTEM 失效
    气缸插入系统

    公开(公告)号：EP0484539A4

    公开(公告)日：1993-03-03

    申请号：EP91908173

    申请日：1991-04-26

    申请人： FANUC LTD.

    发明人： KAWAMURA, HIDEAKI, 1375-5, NARAHARAMACHI ,  SASAKI, TAKAO, ESTATE HACHIOJI 2-502

    IPC分类号： G05B19/18 ,  G05B19/404 ,  G05B19/41 ,  G05B19/4103 ,  G05B19/415

    CPC分类号： G05B19/184 ,  G05B19/41 ,  G05B19/4103 ,  G05B2219/36185 ,  G05B2219/50213 ,  G05B2219/50336

    摘要： A cylinder interpolation system for machining a cylindrical surface of a cylindrical work. Tool diameter correction means (104) calculates an offset vector of a tool diameter with respect to a machining shape instructed on imaginary orthogonal coordinates and determines the center passage of a tool. Interpolation means (107) interpolates this center passage and outputs an interpolation pulse (PCyi) of an imaginary linear axis and an interpolation pulse (Pzi) of a cylinder axis. To inversely convert the imaginary orthogonal coordinates to the cylinder coordinates, the interpolation pulse (PCyi) is converted to a pulse (PCi) for rotating the axis of rotation by pulse conversion means (108). On the other hand, means (105) and means (109) calculate a corrective component (Vcy) at the beginning of a block and a synchronous corrective component (ΔVcy), respectively. These corrective components (Vcy, ΔVcy) are interpolated by means (106) and means (110) and added to the pulse (PCi) for rotating the axis of rotation. In this way, the tool cutting surface is controlled so that it exists always immediately above the center axis of rotation and the machined surface is vertical to the cylindrical surface of the work.

    Methods of generating data for numerically controlled machine tools
    7.
    发明公开
    Methods of generating data for numerically controlled machine tools 失效
    数字控制机床数据生成方法

    公开(公告)号：EP0439305A3

    公开(公告)日：1992-06-24

    申请号：EP91300429.7

    申请日：1991-01-18

    申请人： SONY CORPORATION

    发明人： Sawamura, Jun, Patents Division ,  Kuragano, Tetsuzo, Patents Division

    IPC分类号： G05B19/18 ,  G05B19/41

    CPC分类号： G05B19/41 ,  G05B19/4093 ,  G05B19/4099 ,  G05B2219/35151 ,  G05B2219/50336 ,  Y02P90/265

    摘要： A method of generating data defining a tool path for a numerically controlled machine (14) is designed for generating machining tool path data without establishing offset plane data, so that the machining tool path depth data can be established for discontinuous, surfaced, offset planes which might otherwise cause interference in the tool path. The method includes the steps of forming a plurality of patches defining a three-dimensional plane to be machined, sub-dividing each patch into a predetermined number of segments as divided by a plurality of grid points so that the distance is maintained to be smaller than the machining area of the machine tool (14). The machining depth at each grid point within the tool path is derived with respect to the maximum height position at which the machining tool comes into contact with the grid point. The machining depth is modified with a correction value which is determined in terms of the surface condition of the surface to be machined.