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1. 发明授权

US5218281A Acceleration/deceleration control method for a numerical control device 失效
标题翻译：一种数控装置的加速/减速控制方法
公开(公告)号：US5218281A
公开(公告)日：1993-06-08
申请号：US667387
申请日：1991-03-25
申请人： Takao Sasaki , Kentaro Fujibayashi , Shouichi Sagara
发明人： Takao Sasaki , Kentaro Fujibayashi , Shouichi Sagara
IPC分类号： G05B19/416
CPC分类号： G05B19/416 , G05B2219/43009 , G05B2219/43058
摘要： An acceleration/deceleration control method for a numerical control device (CNC) which subjects a command value of a velocity in a tangential direction of a traveling path, which is instructed by a pre-interpolation feed command, to an acceleration/deceleration control. A command is read (S1), and an angle .theta. of a traveling direction of a tool with respect to an X axis is calculated (S2). Tangential accelerations .alpha.vx and .alpha.vy are derived based on preset maximum permissible accelerations for individual axes and the angle .theta. (S3). A smaller of the tangential accelerations .alpha.vx and .alpha.vy is set as a tangential acceleration .alpha.v (S4). The command velocity F is subjected to the acceleration/deceleration control by using the acceleration .alpha.v (S5), and then the interpolation is effected (S6). Since the tangential acceleration .alpha.v is set to a maximum value in a range in which the accelerations of the individual axes will not exceed the maximum permissible values thereof, the time required for effecting the acceleration/deceleration control can be reduced to a minimum value.

2. 发明授权

US5309367A Pitch error compensating system 失效
标题翻译：间距误差补偿系统
公开(公告)号：US5309367A
公开(公告)日：1994-05-03
申请号：US778068
申请日：1991-12-02
申请人： Takao Sasaki , Kentaro Fujibayashi , Toshiaki Otsuki , Ryouji Eguchi
发明人： Takao Sasaki , Kentaro Fujibayashi , Toshiaki Otsuki , Ryouji Eguchi
IPC分类号： G05B19/18 , G05B19/23 , G05B19/404 , G06F15/46
CPC分类号： G05B19/231 , G05B2219/41036 , G05B2219/41055 , G05B2219/41063
摘要： A pitch error compensating system compensates for a pitch error of a ball screw of a numerically controlled machine tool. A pitch error calculating means (4) reads a present value from a present value register (3), reads pitch error corrective quantities (.epsilon.n, .epsilon.pn) in a corresponding period, and outputs pitch error corrective quantities as pitch error corrective pulses (CP) at equal intervals in the period. The pitch error corrective pulses (CP) are added to interpolated pulses (CP) by an adder (5). Since the pitch error corrective quantities are not outputted all at once, the machine tool moves smoothly, and the quality of the machined surface of the workpiece is improved.
摘要翻译： PCT No.PCT / JP91 / 00498 Sec。 371 1991年12月2日第 102（e）1991年12月2日PCT PCT 1991年4月10日提交PCT公布。公开号WO91 / 16173 日期1991年10月31日。螺距误差补偿系统补偿数控机床的滚珠丝杠的螺距误差。音调误差计算装置（4）从当前值寄存器（3）中读取当前值，在相应的周期内读出音调误差校正量（epsilon n，εpn），并将音调误差校正量作为音调误差校正脉冲（ CP）。通过加法器（5）将音调误差校正脉冲（CP）加到内插脉冲（CP）上。由于螺距误差校正量一次不全部输出，所以机床平稳地移动，提高了加工面的质量。

3. 发明授权

US5305227A Gear pitch error correcting system for numerical control apparatus 失效
标题翻译：数控机床齿轮误差校正系统
公开(公告)号：US5305227A
公开(公告)日：1994-04-19
申请号：US776379
申请日：1991-11-26
申请人： Takao Sasaki , Kentaro Fujibayashi , Toshiaki Otsuki , Ryouji Eguchi
发明人： Takao Sasaki , Kentaro Fujibayashi , Toshiaki Otsuki , Ryouji Eguchi
IPC分类号： G05B19/18 , G01M13/02 , G05B19/23 , G05B19/404 , G06F11/30
CPC分类号： G01M13/021 , G05B19/231 , G05B2219/34072 , G05B2219/35354 , G05B2219/41036 , G05B2219/41055 , G05B2219/49197
摘要： A gear pitch error correcting system for a numerical control apparatus used for a machine tool including at least one pair of gears provided in a transmission line through which the rotating force of a servomotor is transmitted to a driven member. Gear pitch error correction values for the respective gears, which each correspond to a predetermined gear angle and collectively cover one gear rotation, are stored in a nonvolatile memory. A pitch error computing means (E) refers to a current position register (D), reads out pitch error correction data (14b) corresponding to the current position from the nonvolatile memory, and adds up the data to obtain a superimposed pitch error correction value. The superimposed pitch error correction value and an interpolation pulse from an interpolating means (B) are added together by an adder (C), to obtain a pitch error-corrected output pulse, which is then supplied to an axis control circuit (18). Accordingly, even with a relatively small number of gear pitch error correction values for the individual gears, a gear pitch error correction can be precisely executed in proportion to the superimposing of the gear pitch error correction values.
摘要翻译：一种用于机床的数控装置的齿轮间距误差校正系统，包括至少一对齿轮，所述至少一对齿轮设置在传动线中，伺服马达的旋转力通过该传动线被传递到从动构件。各自对应于预定的齿轮角并且共同覆盖一个齿轮旋转的各个齿轮的齿轮间距误差校正值被存储在非易失性存储器中。音调误差计算装置（E）是指当前位置寄存器（D），从非易失性存储器读出与当前位置对应的音调纠错数据（14b），并将数据相加以获得叠加的音高误差校正值。来自内插装置（B）的叠加的音调误差校正值和内插脉冲由加法器（C）相加在一起，以获得音调误差校正的输出脉冲，然后将其提供给轴控制电路（18）。因此，即使对于各个齿轮的齿轮间距误差校正值相对较少，也可以与齿轮间距误差校正值的叠加成比例地精确地执行齿轮间距误差校正。

4. 发明授权

US5265027A System for controlling three-dimensional coordinate transformation 失效
标题翻译：用于控制三维坐标变换的系统
公开(公告)号：US5265027A
公开(公告)日：1993-11-23
申请号：US761800
申请日：1991-09-16
申请人： Takao Sasaki , Kentaro Fujibayashi , Masahiko Miyake
发明人： Takao Sasaki , Kentaro Fujibayashi , Masahiko Miyake
IPC分类号： G05B19/18 , G05B19/19 , G05B19/4093
CPC分类号： G05B19/195 , G05B2219/33258
摘要： A three-dimensional coordinate transformation control system controls three-dimensional coordinate transformation in a computerized numerical control apparatus for controlling a machine tool having a plurality of heads. A pre-processing calculating unit (2) decodes a machining program (1), effects three-dimensional coordinate transformation for only a first head in a three-dimensional coordinate transforming unit (3), and distributes pulses based on transformed coordinates to a pulse distributing unit (4). For a second head, the coordinates for the first head are used as they are, and pulses based on the coordinates are distributed by a pulse distributing unit (5). The three-dimensional coordinate transformation is therefore calculated by a reduced number of times, and the burden on the computerized numerical control apparatus for calculations is reduced.

5. 发明授权

US5260879A Numerical control apparatus 失效
标题翻译：数控装置
公开(公告)号：US5260879A
公开(公告)日：1993-11-09
申请号：US773592
申请日：1991-11-21
申请人： Takao Sasaki , Kentaro Fujibayashi , Toshiaki Otsuki , Hideo Ogino
发明人： Takao Sasaki , Kentaro Fujibayashi , Toshiaki Otsuki , Hideo Ogino
IPC分类号： B23F5/00 , B23F23/00 , G05B19/18 , G05B19/4103 , B23F1/00 , G05B19/21
CPC分类号： G05B19/184 , B23F23/006 , G05B19/186 , G05B2219/45214 , G05B2219/50216 , Y10T409/100159
摘要： Disclosed is a numerical control apparatus for controlling a numerically controlled machine tool such as a hobbing machine and the like. An axis control circuit (14) provided with a synchronization control means (8) controls the rpm of a spindle motor (5) and the rpm of a servo motor (11) based on feedback pulses supplied from a position coder (7) connected to a hob axis (3), so that a ratio of the rpm of the hob axis (3) to the rpm of a C-axis (13) has a given value. A first internal counter (15a) monitors the number of feedback pulses supplied from the position coder (7) and a second internal counter (15b) monitors the number of pulses distributed to the C-axis (13), and when a ratio of the rpm of the hob axis (3) to the rpm of the C-axis (13) is to be changed, a correction pulse calculation means (9) calculates correction pulses based on the number of rotation pulses of the hob axis (3) and the number of the rotation pulses of the C-axis (13) counted by the first and second internal counters (15a, 15b). The correction pulses are supplied to the C-axis (13) to accelerate or decelerate the rpm of the C-axis (13) and thereby achieve a new synchronous relationship between the hob axis (3) and the C-axis (13) during the rotation of the hob axis (3) and C-axis (13).
摘要翻译： PCT No.PCT / JP91 / 00356 Sec。 371日期1991年11月21日 102（e）日期1991年11月21日PCT 1991年3月13日PCT公布。出版物WO91 / 14979 1991年10月3日公开。公开是用于控制诸如滚齿机等的数控机床的数控装置。设有同步控制装置（8）的轴控制电路（14）基于从位置编码器（7）提供的反馈脉冲来控制主轴电动机（5）的转速和伺服电动机（11）的转速，滚刀轴（3），使得滚刀轴（3）的rpm与C轴（13）的rpm的比率具有给定值。第一内部计数器（15a）监视从位置编码器（7）提供的反馈脉冲的数量，第二内部计数器（15b）监视分配给C轴（13）的脉冲数，要改变滚轴（3）的转速（rpm）至C轴（13）的转数，则校正脉冲计算装置（9）根据滚刀轴（3）的旋转脉冲数和由第一和第二内部计数器（15a，15b）计数的C轴（13）的旋转脉冲数。校正脉冲被提供给C轴（13）以加速或减速C轴（13）的转速，从而在滚动轴（3）和C轴（13）之间达到新的同步关系滚刀轴（3）和C轴（13）的旋转。

6. 发明授权

US5210478A Method of correcting machine position change 失效
公开(公告)号：US5210478A
公开(公告)日：1993-05-11
申请号：US720847
申请日：1991-07-15
申请人： Takao Sasaki , Kentaro Fujibayashi , Makoto Haga
发明人： Takao Sasaki , Kentaro Fujibayashi , Makoto Haga
IPC分类号： G05B19/18 , G05B19/25 , G05B19/404 , G05B19/41
CPC分类号： G05B19/251 , G05B19/41 , G05B2219/34156 , G05B2219/41036
摘要： A method of correcting a change of position of a machine tool having at least two control axes. A position change check simulator (14) obtains a ratio (R2) of amounts of movement of respective axes (Xe1, Ye1) obtained from output values of position detectors (8X, 8Y) for detecting a position of the machine tool, and further, obtains a ratio (R1) of predicted amounts of movement of the respective axes obtained from a machine position predicted on the basis of distribution pulses (Xp5, Yp5) of the respective axes, assuming that a servo system has a first order lag. A position correcting means (12) outputs a correction pulse (Xc1, Yc1) so that the ratio (R2) of actual amounts of movement becomes equal to the ratio (R1) of the predicted amounts of movement. This correction pulse (Xc1, Yc1) is added to command pulses (Xp1, Yp1), and accordingly, an abrupt machining error occurring at the beginning and just before the end of machining, and during the machining at corners of a machined article, can be eliminated.

7. 发明授权

US5200680A Feed speed control method for a numerical control device 失效
标题翻译：一种数控装置的进给速度控制方法
公开(公告)号：US5200680A
公开(公告)日：1993-04-06
申请号：US651267
申请日：1991-04-15
申请人： Takao Sasaki , Kentaro Fujibayashi , Toshiaki Otsuki , Yasuhiro Saito
发明人： Takao Sasaki , Kentaro Fujibayashi , Toshiaki Otsuki , Yasuhiro Saito
IPC分类号： G05B19/416
CPC分类号： G05B19/416 , G05B2219/43009 , G05B2219/43058 , G05B2219/43062 , G05B2219/43129 , G05B2219/43199 , G05B2219/43203
摘要： A feed speed control method for a numerical control device in which a feed speed of a tool traveling along an instructed machining path is controlled in accordance with a machining program. The speed of each axis is derived (S2), and the acceleration of each axis is derived from a speed variation between adjacent blocks (S3). When the acceleration (.DELTA.Vx) is larger than a permissible acceleration (.DELTA.Vxmax) (S4), first ratios (K1) of the permissible accelerations to the accelerations are derived for individual axes (S5), and the smallest of the first ratios is selected. The command speed is multiplied by the square root of the smallest first ratio to derive an actual feed speed (S9). In this way, shock to a machine is reduced and an excessive load on a servomotor is reduced even when blocks continue for successive infinitesimal distribution distances, as in the case wherein a curve is approximated by the use of straight lines.
摘要翻译： PCT No.PCT / JP90 / 01028 Sec。 371日期：1991年4月15日 102（e）日期1991年4月15日PCT 1990年8月10日PCT PCT。公开号WO91 / 03778 1991年3月21日。一种数控装置的进给速度控制方法，其中根据加工程序控制沿着指示的加工路径行进的工具的进给速度。导出每个轴的速度（S2），并且每个轴的加速度来自相邻块之间的速度变化（S3）。当加速度（DELTA Vx）大于允许加速度（DELTA Vxmax）（S4））时，针对各个轴（S5）导出允许的加速度与加速度的第一比率（K1），并且最小的第一比率选择。命令速度乘以最小第一比率的平方根，得出实际进给速度（S9）。以这种方式，即使在连续的无穷小分布距离的块继续下降的同时，对于机器的冲击减小，并且伺服电动机的过大负载被降低，如在使用直线近似曲线的情况下。

8. 发明授权

US5181178A Spindle control command method 失效
标题翻译：主轴控制命令方法
公开(公告)号：US5181178A
公开(公告)日：1993-01-19
申请号：US582204
申请日：1990-10-01
申请人： Takao Sasaki , Kentaro Fujibayashi , Masahiko Miyake
发明人： Takao Sasaki , Kentaro Fujibayashi , Masahiko Miyake
IPC分类号： G05B19/18 , G05B19/408
CPC分类号： G05B19/182 , G05B19/408 , G05B2219/50235
摘要： A spindle control command method is provided for controlling a plurality of spindless by a single numerical control device (CNC), and switching between individual control and synchronous control of a plurality of spindles (1, 3) is effected by a program command (9). Namely, whether the spindles (1, 3) should be controlled individually or synchronously is commanded by an NC program (9), and the CNC carries out switching to the individual spindle control or to the synchronous spindle control in accordance with the command given.

9. 发明授权

US5177421A Method of correcting machine position change 失效
标题翻译：校正机器位置变化的方法
公开(公告)号：US5177421A
公开(公告)日：1993-01-05
申请号：US720765
申请日：1991-07-02
申请人： Takao Sasaki , Kentaro Fujibayashi , Makoto Haga
发明人： Takao Sasaki , Kentaro Fujibayashi , Makoto Haga
IPC分类号： G05B19/18 , G05B19/25 , G05B19/404
CPC分类号： G05B19/251 , G05B2219/34156 , G05B2219/49164
摘要： A method of correcting a change of position of a machine tool having at least two control axes avoids abrupt machining errors. A position correction means (12) outputs correction pulses (Xcp, Ycp) so that the ratio of actual amounts of movement of the respective axes, obtained from the output values of position detectors (8X, 8Y) detecting a position of the machine tool, becomes equal to the ratio (R1) of distribution pulses (Xp1, Yp1) for the respective axes. The correction pulses (Xcp, Ycp) are added to the distribution pulses (Xp1, Yp1). Accordingly, an abrupt machining error caused at the beginning or just before the end of machining, or when machining a corner of a workpiece, is alleviated.

10. 发明授权

US5150025A Reloading system for pitch error correction data 失效
标题翻译：用于PITCH错误校正数据的恢复系统
公开(公告)号：US5150025A
公开(公告)日：1992-09-22
申请号：US635624
申请日：1991-01-02
申请人： Takao Sasaki , Kentaro Fujibayashi , Shintaro Kageyama
发明人： Takao Sasaki , Kentaro Fujibayashi , Shintaro Kageyama
IPC分类号： G05B19/18 , G05B19/401 , G05B19/404 , G05B19/408
CPC分类号： G05B19/4015 , G05B19/404 , G05B19/408 , G05B2219/41075 , G05B2219/41076
摘要： A system for reloading pitch error correction data at the time of replacing a movable part constituting part of a mechanical system of a numerically controlled machine tool. A command to reload the pitch error correction data is preset in a machining program at the time of replacing the movable part. A numerical control device reads this command. If a parameter reload command is given (S1), and if it is the pitch error correction data (S2), it is determined whether the movable part is situated at the original position (S3), and the pitch error correction data is automatically reloaded (S4). Accordingly, the operator is not required to carry out any operation related to the reloading of the pitch error correction data, and thus the machining can be effected with the use of correct pitch error correction data.
摘要翻译： PCT No.PCT / JP90 / 00532 Sec。 371日期1991年1月2日 102（e）日期1991年1月2日PCT提交1990年4月24日PCT公布。 WO90 / 14622 PCT出版物日期：1990年11月29日。一种用于在更换构成数控机床的机械系统的一部分的可移动部件时重新加载螺距误差校正数据的系统。在更换可移动部件时，在加工程序中预先设定重新加载螺距误差校正数据的命令。数字控制装置读取此命令。如果给出参数重载命令（S1），并且如果是音调纠错数据（S2），则确定可移动部分是否位于原始位置（S3），并且音调误差校正数据被自动重新加载（S4）。因此，操作者不需要执行与重新加载音高误差校正数据相关的任何操作，因此可以使用正确的音高误差校正数据来进行加工。

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