公开(公告)号：US20050137739A1

公开(公告)日：2005-06-23

申请号：US11032795

申请日：2005-01-10

申请人： Jun Yoshida ,  Yoshikatsu Teraoka

发明人： Jun Yoshida ,  Yoshikatsu Teraoka

IPC分类号： G05B19/404 ,  G06F19/00

CPC分类号： G05B19/404 ,  G05B2219/41078 ,  G05B2219/41154 ,  G05B2219/41164

摘要： The present invention relates to a method of controlling a numerically controlled machine tool having a plurality of feed shafts. Also, the present invention relates to a numerically controlled machine tool. According to the present invention, it is possible to solve conventional problems so as to realize highly accurate machining even when a moving body of the machine is moved at high speed. As the means for solving the problems, an appropriate command corresponding to a frictional force of the feed mechanism of the numerically controlled machine tool and also corresponding to a change in the weight of a workpiece is estimated by calculation, and the thus estimated command is outputted into the drive unit of the feed shaft motor so as to drive the feed shaft motor.

摘要翻译： 本发明涉及一种控制具有多个进给轴的数控机床的方法。 另外，本发明涉及数控机床。 根据本发明，即使当机器的移动体高速移动时，也可以解决常规问题，从而实现高精度的加工。 作为解决问题的手段，通过计算来估计与数控机床的进给机构的摩擦力相对应的适当的指令，并且对应于工件的重量的变化，并且输出这样估计的命令 进入进给轴马达的驱动单元，以驱动进给轴马达。

公开(公告)号：US08896255B2

公开(公告)日：2014-11-25

申请号：US13908567

申请日：2013-06-03

申请人： Fanuc Corporation

发明人： Yasusuke Iwashita ,  Kenichi Takayama ,  Satoshi Ikai

IPC分类号： G05B19/404 ,  G05B11/01

CPC分类号： G05B11/011 ,  G05B19/404 ,  G05B2219/41127 ,  G05B2219/41164

摘要： A servo controller, capable of controlling the motion of a movable body with high accuracy, without depending on the position of the movable body which is moved on a ball screw. The servo controller has a position command generating part which generates a position command value; a velocity command generating part which generates a velocity command value based on the position command value and a position detection value; a torque command generating part which generates a torque command value based on the velocity command value and a velocity detection value; and a position compensation calculating part which calculates an amount of expansion/contraction of the ball screw based on a distance from the servomotor to a nut threadably engaged with the ball screw and the torque command value, and calculates a position compensation based on the amount of expansion/contraction.

摘要翻译： 一种伺服控制器，其能够高精度地控制可移动体的运动，而不依赖于在滚珠丝杠上移动的可移动体的位置。 伺服控制器具有产生位置指令值的位置指令生成部， 速度指令生成部，其基于所述位置指令值和位置检测值生成速度指令值; 转矩指令生成部，其基于速度指令值和速度检测值生成转矩指令值; 以及位置补偿计算部，其基于从所述伺服马达到与所述滚珠丝杠螺纹接合的螺母的距离和所述转矩指令值，计算所述滚珠丝杠的伸缩量，并且基于所述滚珠丝杠的量 膨胀/收缩

公开(公告)号：US20180157236A1

公开(公告)日：2018-06-07

申请号：US15825650

申请日：2017-11-29

申请人： FANUC CORPORATION

发明人： Shougo SHINODA ,  Satoshi IKAI

IPC分类号： G05B19/404 ,  G05B11/01 ,  F16H61/02

CPC分类号： G05B19/404 ,  F16H61/0202 ,  G05B11/011 ,  G05B2219/41129 ,  G05B2219/41138 ,  G05B2219/41164

摘要： A servomotor controller includes a connection mechanism configured to transfer power of a servomotor to a driven body; a motor control unit configured to control the servomotor using a position command value; a first force estimation unit configured to estimate a first force estimated value which is a drive force acting on the driven body at a connecting unit with the connection mechanism; a second force estimation unit configured to estimate a second force estimated value serving as a fixed value; a selection unit configured to compare an absolute value of the first force estimated value and an absolute value of the second force estimated value to output the first or second force estimated value having the larger absolute value; and a compensation amount generation unit configured to generate a compensation amount for compensating the position command value on the basis of the first or second force estimated value.

公开(公告)号：US3393588A

公开(公告)日：1968-07-23

申请号：US53497666

申请日：1966-03-08

申请人： ATOMIC ENERGY COMMISSION USA

发明人： BROOME FRANK H

IPC分类号： B23Q15/18

CPC分类号： B23Q15/18 ,  G05B2219/41164 ,  G05B2219/49206 ,  Y10T82/25 ,  Y10T409/300896

公开(公告)号：US20180246491A1

公开(公告)日：2018-08-30

申请号：US15899572

申请日：2018-02-20

申请人： FANUC CORPORATION

发明人： Shougo SHINODA ,  Satoshi IKAI

IPC分类号： G05B19/19 ,  G05B13/02 ,  G05B11/01 ,  G05B19/404

CPC分类号： G05B19/195 ,  G05B11/011 ,  G05B13/024 ,  G05B19/404 ,  G05B2219/41092 ,  G05B2219/41138 ,  G05B2219/41164

摘要： A servomotor control device includes: a driven body configured to be driven by a servomotor; a connection mechanism configured to connect the servomotor and the driven body; a position command generation unit configured to generate a position command value; a motor control unit configured to control the servomotor using the position command value; a force estimation part configured to estimate a force estimated value which is a drive force acting on the driven body at a connecting part with the connection mechanism; a force estimated value output part configured to decide on reflection of updating and interruption of updating of a force estimated value based on the position command value, and output either of a force estimated value reflecting updating, or a force estimated value of when interrupting updating; and a compensation amount generation part configured to generate a compensation amount for compensating the position command value.

公开(公告)号：US20030205984A1

公开(公告)日：2003-11-06

申请号：US10440726

申请日：2003-05-19

发明人： Jun Yoshida ,  Yoshikatsu Teraoka

IPC分类号： H02P007/42

CPC分类号： G05B19/404 ,  G05B2219/41078 ,  G05B2219/41154 ,  G05B2219/41164

摘要： The present invention relates to a method of controlling a numerically controlled machine tool having a plurality of feed shafts. Also, the present invention relates to a numerically controlled machine tool. According to the present invention, it is possible to solve conventional problems so as to realize highly accurate machining even when a moving body of the machine is moved at high speed. As the means for solving the problems, an appropriate command corresponding to a frictional force of the feed mechanism of the numerically controlled machine tool and also corresponding to a change in the weight of a workpiece is estimated by calculation, and the thus estimated command is outputted into the drive unit of the feed shaft motor so as to drive the feed shaft motor.

摘要翻译： 本发明涉及一种控制具有多个进给轴的数控机床的方法。 另外，本发明涉及数控机床。 根据本发明，即使当机器的移动体高速移动时，也可以解决常规问题，从而实现高精度的加工。 作为解决问题的手段，通过计算来估计与数控机床的进给机构的摩擦力相对应的适当的指令，并且对应于工件的重量的变化，并且输出这样估计的命令 进入进给轴马达的驱动单元，以驱动进给轴马达。

公开(公告)号：US20130320908A1

公开(公告)日：2013-12-05

申请号：US13908567

申请日：2013-06-03

申请人： FANUC CORPORATION

发明人： Yasusuke IWASHITA ,  Kenichi TAKAYAMA ,  Satoshi IKAI

IPC分类号： G05B11/01

CPC分类号： G05B11/011 ,  G05B19/404 ,  G05B2219/41127 ,  G05B2219/41164

摘要： A servo controller, capable of controlling the motion of a movable body with high accuracy, without depending on the position of the movable body which is moved on a ball screw. The servo controller has a position command generating part which generates a position command value; a velocity command generating part which generates a velocity command value based on the position command value and a position detection value; a torque command generating part which generates a torque command value based on the velocity command value and a velocity detection value; and a position compensation calculating part which calculates an amount of expansion/contraction of the ball screw based on a distance from the servomotor to a nut threadably engaged with the ball screw and the torque command value, and calculates a position compensation based on the amount of expansion/contraction.

摘要翻译： 一种伺服控制器，其能够高精度地控制可移动体的运动，而不依赖于在滚珠丝杠上移动的可移动体的位置。 伺服控制器具有产生位置指令值的位置指令生成部， 速度指令生成部，其基于所述位置指令值和位置检测值生成速度指令值; 转矩指令生成部，其基于速度指令值和速度检测值生成转矩指令值; 以及位置补偿计算部，其基于从所述伺服马达到与所述滚珠丝杠螺纹接合的螺母的距离和所述转矩指令值，计算所述滚珠丝杠的伸缩量，并且基于所述滚珠丝杠的量 膨胀/收缩

公开(公告)号：US4919575A

公开(公告)日：1990-04-24

申请号：US352470

申请日：1989-05-16

申请人： Takani Yoshimi ,  Akihiro Matsuura ,  Toshiharu Takashima ,  Hiroyuki Nakano

发明人： Takani Yoshimi ,  Akihiro Matsuura ,  Toshiharu Takashima ,  Hiroyuki Nakano

IPC分类号： G05B19/404

CPC分类号： G05B19/404 ,  G05B2219/37096 ,  G05B2219/41164 ,  G05B2219/41165 ,  G05B2219/49207 ,  Y10T408/172 ,  Y10T408/175 ,  Y10T409/309352

摘要： A thermal displacement compensating apparatus capable of compensating for the thermal displacement of the main spindle of a machine tool is disclosed. A feed back scale and a measuring head are provided in order to detect the actual position of the front end portion of the spindle head. Furthermore, a distance sensor is provided for detecting the thermal extension of the main spindle with respect to the spindle head. The output signal from the distance sensor is used for modifying the present position detected by the measuring head or modifying a commanded target position. With this arrangement, a tool attached to the front end portion of the main spindle is moved to the commanded position regardless of the thermal displacement of the spindle head and the main spindle. Another type of compensation apparatus is also disclosed, wherein the measuring head is mounted on a mounting rod, and the mounting rod is automatically moved so as to maintain the distance between the measuring head and the front end surface of the main spindle at a constant distance. With this arrangement, actual position of the front end surface of the main spindle can directly be detected regardless of the thermal displacement of the spindle head and the main spindle.