公开(公告)号：US20030167100A1

公开(公告)日：2003-09-04

申请号：US10375101

申请日：2003-02-28

申请人： TOSHIBA KIKAI KABUSHIKI KAISHA

发明人： Jun Fujita ,  Ichiro Matsumoto

IPC分类号： G06F019/00

CPC分类号： G05B19/4065 ,  G05B2219/37246 ,  Y10T408/14 ,  Y10T408/165

摘要： A numerical controlling unit according to the present invention includes: an inputting part into which a machining program for machining a workpiece is inputted; an analyzing part that analyzes the machining program to generate an instructed spindle rotational speed and calculates a spindle load ratio indicating a ratio of a load applied to a spindle under a machining condition according to the machining program, with respect to a spindle load being caused when the workpiece is machined under a machining condition of a certain reference; and a distributing part that generates, based on the machining program, a distribution amount per unit period to be inputted into a feed-axis servo driver for moving a feed axis. A spindle-rotational-amount-command outputting part receives the instructed spindle rotational speed and outputs a spindle-rotational-amount command for commanding a rotational amount per unit period. The spindle-rotational-amount command is inputted into a spindle driver. A cutting-load-for judgment calculating part calculates a reference torque value based on the spindle load ratio outputted by the analyzing part, the distribution amount outputted by the distributing part, and the spindle-rotational-amount command outputted by the spindle-rotational-amount-command outputting part. A spindle-load comparing part compares the reference torque value with a load torque value which is feedback inputted by the spindle driver and outputs a tool-breakage detecting signal when the load torque value is higher than the reference torque value.

摘要翻译： 根据本发明的数值控制单元包括：输入部件，其中输入用于加工工件的加工程序; 分析部件，其分析加工程序以产生指令的主轴转速，并且计算主轴负载比，所述主轴负载比指示根据加工程序在加工条件下施加于主轴的负载的相对于主轴负载的主轴负载比， 在一定参考的加工条件下加工工件; 以及分配部，其基于加工程序生成要输入到用于移动进给轴的进给轴伺服驱动器的每单位周期的分配量。 主轴转速指令输出部接收指示的主轴转速，并输出用于指令每单位周期的转动量的主轴转动量指令。 主轴转速指令被输入主轴驱动器。 切断负荷判断运算部根据由分析部输出的主轴负载率，分配部输出的分配量和由主轴旋转运算部输出的主轴转动量指令，计算基准转矩值， 量命令输出部分。 主轴负载比较部将参考转矩值与由主轴驱动器反馈输入的负载转矩值进行比较，当负载转矩值高于基准转矩值时，输出刀具断线检测信号。

公开(公告)号：US20030010531A1

公开(公告)日：2003-01-16

申请号：US10176064

申请日：2002-06-21

申请人： TOSHIBA KIKAI KABUSHIKI KAISHA

发明人： Minoru Hamamura ,  Jun Fujita ,  Shigeichi Yamamoto

IPC分类号： E21B044/02

CPC分类号： B23C3/04 ,  B23B35/00 ,  Y10T83/6995 ,  Y10T279/14 ,  Y10T408/175 ,  Y10T409/305432 ,  Y10T409/306104 ,  Y10T409/307112 ,  Y10T409/307616

摘要： For an orbit boring to be performed by a tool (10) in an orbital motion along an orbit (A), a permissible range of an acceleration (a) of the orbital motion is provided to meet a criterion of a machining precision of the orbit boring, and the acceleration (a) is controlled to be suppressed within the permissible range.

摘要翻译： 为了在沿着轨道（A）的轨道运动中由工具（10）执行的轨道钻孔，提供轨道运动的加速度（a）的允许范围以满足轨道的加工精度的标准 加速度（a）被控制在允许范围内。

公开(公告)号：US20030004605A1

公开(公告)日：2003-01-02

申请号：US10176134

申请日：2002-06-21

申请人： TOSHIBA KIKAI KABUSHIKI KAISHA

发明人： Minoru Hamamura ,  Jun Fujita ,  Kazuhiro Shiba

IPC分类号： G06F019/00

CPC分类号： G05B19/4163 ,  G05B2219/35473 ,  G05B2219/43201

摘要： A feed velocity of a control axis and acceleration thereof do not exceed a maximum feed velocity and a maximum acceleration defined in mechanical specifications even if a radial operation is carried out for the purpose of a cut-in or escape operation in a contour describing control A radial permissible maximum velocity (Vnp) and a radial permissible maximum acceleration (nullnp) in a contour describing control using a circular interpolation is set separately from a setting value of a maximum feed velocity (Vm) of a control axis and that of a maximum acceleration (nullm) thereof set as mechanical specifications, and when a command of the circular interpolation is given, limitations are given to a radial velocity (Vn) and acceleration (nulln) so that the radial velocity (Vn) and acceleration (nulln) do not exceed the radial permissible maximum velocity (Vnp) and permissible maximum acceleration (nullnp).

摘要翻译： 控制轴的进给速度及其加速度不会超过在机械规格中定义的最大进给速度和最大加速度，即使在轮廓描述控制A中进行径向操作以进行切入或脱离操作 使用圆弧插补的轮廓描述控制中的径向允许最大速度（Vnp）和径向允许最大加速度（alphanp）与控制轴的最大进给速度（Vm）的设定值和最大加速度 （Alpham）设定为机械规格，并且当给出圆弧插补的命令时，给出径向速度（Vn）和加速度（alphan）的限制，使得径向速度（Vn）和加速度（孤立）不是 超过径向允许最大速度（Vnp）和允许的最大加速度（alphanp）。

公开(公告)号：US20030020427A1

公开(公告)日：2003-01-30

申请号：US10122298

申请日：2002-04-16

申请人： TOSHIBA KIKAI KABUSHIKI KAISHA

发明人： Minoru Hamamura ,  Jun Fujita

IPC分类号： G05D023/275

CPC分类号： G05B13/042 ,  B65H2557/262 ,  G05B19/404 ,  G05B2219/41434 ,  G05B2219/49182 ,  G05B2219/49199

摘要： The servo control method operates a set value of a first-order lag time constant of a feedback compensation by both a detected mechanical position value and a transfer function corresponding to a change of an angular velocity about each axis under a multiple-axes simultaneous control. Further, the servo control method sets a feedforward amount so that the transfer function about the each axis is the same.

摘要翻译： 伺服控制方法通过检测到的机械位置值和对应于在多轴同时控制下围绕每个轴的角速度的变化的传递函数来操作反馈补偿的一阶滞后时间常数的设定值。 此外，伺服控制方法设定前馈量，使得围绕各轴的传递函数相同。

公开(公告)号：US20020173873A1

公开(公告)日：2002-11-21

申请号：US10151016

申请日：2002-05-21

申请人： TOSHIBA KIKAI KABUSHIKI KAISHA

发明人： Ichiro Matsumoto ,  Jun Fujita

IPC分类号： G06F019/00

CPC分类号： G05B19/4166 ,  G05B2219/43094 ,  G05B2219/49054

摘要： A numerical controlling unit that accelerates or decelerates a feeder-driving system includes; an acceleration setting part that can set a volume and a timing of an acceleration that should be supplied to the feeder-driving system, based on a predetermined target condition; and a controlling part that can supply the acceleration set by the acceleration setting part to the feeder-driving system. The acceleration setting part is adapted to set: a first acceleration that starts to be supplied at a timing of starting to accelerate; and a second acceleration that has a volume and that starts to be supplied overlappedly with the first acceleration at a timing, the volume and the timing being determined so as to damp vibration of the feeder-driving system that is generated by starting to supply the first acceleration.

摘要翻译： 一个加速或减速给料器驱动系统的数字控制单元包括： 加速度设定部，其能够基于预定的目标条件来设定应该供给到所述供给驱动系统的加速度的体积和时刻; 以及控制部，其能够将由加速度设定部设定的加速度提供给进给器驱动系统。 加速度设定部适于设定：开始加速时刻开始供给的第一加速度; 以及第一加速度，其具有体积，并且在定时被开始与第一加速度重叠地供应，所述体积和定时被确定为阻止通过开始供应第一加速度而产生的供给器驱动系统的振动 加速。

公开(公告)号：US20010008370A1

公开(公告)日：2001-07-19

申请号：US09760830

申请日：2001-01-17

申请人： Toshiba Kikai Kabushiki Kaisha

发明人： Jun Fujita

IPC分类号： G05B011/01

CPC分类号： G05B19/19 ,  G05B2219/50219 ,  G05B2219/50234

摘要： When driving a plurality of paralleled feed drive mechanisms individually by servo motors (105, 106), torque of the servo motors (105, 106) is detected, and in dependence on a difference therebetween, a position command of servo motor (106) at a slave side is corrected, so that torque of the slave side servo motor (106) is matched to to torque of servo motor (105) at a master side.

摘要翻译： 当通过伺服马达（105,106）分别驱动多个并联的进给驱动机构时，检测伺服马达（105,106）的转矩，并且根据它们之间的差值，伺服马达（106）的位置指令在 修正从动侧，使从侧伺服电动机（106）的转矩与主侧的伺服电动机（105）的转矩一致。