公开(公告)号：US4956785A

公开(公告)日：1990-09-11

申请号：US243298

申请日：1988-07-11

申请人： Hideaki Kawamura ,  Kentaro Fujibayashi ,  Yosato Hidaka

发明人： Hideaki Kawamura ,  Kentaro Fujibayashi ,  Yosato Hidaka

IPC分类号： G05B19/18 ,  G05B19/408 ,  G05B19/414 ,  G05B19/4155

CPC分类号： G05B19/408 ,  G05B2219/35368 ,  G05B2219/35388 ,  G05B2219/35394 ,  G05B2219/35546

摘要： A numerical control method is provided, which is capable of uninterruptedly conducting control, at high speed, in accordance with various kinds of NC program. Command information stated in each of blocks of the NC program is read out and decoded by a first sub-CPU to prepare an intermediate data which is to be stored in a first shared RAM. This intermediate data is converted into data of execute form by a second sub-CPU and is stored in a second shared RAM. Preparatory processings for two blocks, each starting from the reading operation of the command information and ending at the preparation of the execute form data, are conducted simultaneously, so that a time period required for execution of each preparatory processing is shortened in apperance, to thereby prevent interruption of the numerical control due to a delay in the preparatory processing.

公开(公告)号：US5005135A

公开(公告)日：1991-04-02

申请号：US327324

申请日：1989-03-22

申请人： Alfred H. Morser ,  Walter M. Gildemeister ,  David M. Farmer

发明人： Alfred H. Morser ,  Walter M. Gildemeister ,  David M. Farmer

IPC分类号： G05B13/02 ,  G05B19/18 ,  G05B19/37 ,  G05B19/404 ,  G05B19/4061 ,  G05B19/4155 ,  G05B19/416

CPC分类号： G05B19/373 ,  G05B2219/33119 ,  G05B2219/33338 ,  G05B2219/34206 ,  G05B2219/34419 ,  G05B2219/35245 ,  G05B2219/35263 ,  G05B2219/35279 ,  G05B2219/35287 ,  G05B2219/35294 ,  G05B2219/35373 ,  G05B2219/35394 ,  G05B2219/36168 ,  G05B2219/36395 ,  G05B2219/37619 ,  G05B2219/41113 ,  G05B2219/41192 ,  G05B2219/41219 ,  G05B2219/42062 ,  G05B2219/42152 ,  G05B2219/43199 ,  G05B2219/45215 ,  G05B2219/45216 ,  G05B2219/49376 ,  G05B2219/50109 ,  G05B2219/50113 ,  G05B2219/50208 ,  Y10T409/30056

摘要： The invention relates to servo-driven computer-numerically-controlled systems of the type adapted to receive part program instructions defining a desired path of relative movement between a tool and a workpiece, wherein the path may include an interior or exterior curved portion to be effected by coordinated linear movement of machine members along at least two orthogonal linear axes. The invention provides apparati and methods for correcting path radius errors to facilitate rapid and accurate movement along the curve. In a preferred embodiment, such path radius correction is applied to a fixed cycle for machining inside circles preferably incorporating such path radius correction and providing substantially tangential engagement between the tool and a machining locus orbited by the tool to avoid abrupt accelerations or decelerations while the tool is in contact with the workpiece. In addition to avoiding surface blemishes, this facilitates machining a broader range of hole sizes with a given sized tool thereby reducing the need for frequent tool changes. The invention carries out path radius correction by generating position commands received by the servo using corrected radius data, the difference between which and the desired radius to be machined compensates for at least a portion of the path radius error that would otherwise be generated by the servo. Apparatus and methods for threading holes using a non-helical threading tools with or without path radius correction are also disclosed.

摘要翻译： 本发明涉及适于接收部件程序指令的伺服驱动的计算机数字控制系统，该程序指令限定了工具和工件之间的相对运动的期望路径，其中该路径可包括要实现的内部或外部弯曲部分 通过沿着至少两个正交线性轴的机器构件的协调线性运动。 本发明提供了用于校正路径半径误差的装置和方法，以促进沿着曲线的快速和准确的移动。 在优选实施例中，将这种路径半径校正应用于用于在圆内进行加工的固定循环，优选地包括这种路径半径校正并且在工具与由工具轨道运动的加工轨迹之间提供基本上切向的接合以避免突然加速或减速，同时工具 与工件接触。 除了避免表面瑕疵之外，这有助于使用给定尺寸的工具加工更宽范围的孔尺寸，从而减少频繁更换刀具的需要。 本发明通过产生由伺服使用校正的半径数据接收的位置命令来执行路径半径校正，其中加工的所需半径和所需半径之间的差补偿由伺服器产生的路径半径误差的至少一部分 。 还公开了使用具有或不具有路径半径校正的非螺旋穿线工具穿孔的装置和方法。

公开(公告)号：US5438522A

公开(公告)日：1995-08-01

申请号：US233479

申请日：1994-04-26

申请人： Robert M. Crovella

发明人： Robert M. Crovella

IPC分类号： G05B19/4103 ,  G06F19/00 ,  G05B19/42

CPC分类号： G05B19/4103 ,  G05B2219/34047 ,  G05B2219/34089 ,  G05B2219/34167 ,  G05B2219/35369 ,  G05B2219/35394

摘要： A method for efficiently interpolating sub-span position commands for control of a machine member. The method includes storing a set of coefficients defined by a parametric function relating member position and time, calculating the distance between a target coordinate axis position command and a current coordinate axis position command, generating first and second command modifiers from the stored coefficients, the calculated distance, and a current coordinate axis position command, and summing the current coordinate axis position command and the first and second command modifiers to generate a subspan position command.

摘要翻译： 一种用于有效地插入子跨度位置命令以控制机器构件的方法。 该方法包括存储由参数函数定义的一组系数，该参数函数关联成员位置和时间，计算目标坐标轴位置命令与当前坐标轴位置命令之间的距离，从存储的系数产生第一和第二命令修改器， 距离和当前坐标轴位置命令，并且对当前坐标轴位置命令和第一和第二命令修改器求和以产生子跨位置命令。