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1. 发明授权

US4884373A Numerically controlled machine tool 失效
公开(公告)号：US4884373A
公开(公告)日：1989-12-05
申请号：US98186
申请日：1987-09-18
申请人： Ikuo Suzuki , Takao Yoneda , Takayuki Hotta , Toshihiro Yonezu
发明人： Ikuo Suzuki , Takao Yoneda , Takayuki Hotta , Toshihiro Yonezu
IPC分类号： B23Q17/20 , B24B19/12 , B24B49/04 , G05B19/18
CPC分类号： B24B19/125 , B24B49/00 , G05B19/184
摘要： A numerically controlled machine tool for machining a non-circular workpiece according to profile data. The numerical controller of the machine tool memorizes the ideal profile data calculated from the ideal final shape of the workpiece, and the execution profile data calculated from the ideal profile data and compensated for position error due to the follow delay of the machine tool. The machine tool is controlled according to the execution profile data during grinding the workpiece with cut-in feed and spark-out grinding. The numerical controller has the capability of measuring position change of the main spindle and the tool slide during spark-out grinding. Then, the numerical controller ascertains whether or not the follow delays of the main spindle and the tool slide are within a prescribed tolerance depending on the measured position change and the ideal profile data.

2. 发明授权

US5175680A Synchronizing control apparatus 失效
标题翻译：同步控制装置
公开(公告)号：US5175680A
公开(公告)日：1992-12-29
申请号：US487449
申请日：1990-03-02
申请人： Takao Yoneda , Toshihiro Yonezu
发明人： Takao Yoneda , Toshihiro Yonezu
IPC分类号： G05B19/18
CPC分类号： G05B19/182 , G05B2219/49252 , G05B2219/50234
摘要： A synchronizing control apparatus for synchronously rotating master and slave main spindles of a pin grinder, wherein a servomotor for the slave main spindle is rotated at a speed corresponding to a compensated command value while the master main spindle is rotated at a speed corresponding to a noncompensated command value. The compensated command value is calculated based on a synchronizing error between the master and slave main spindles at a predetermined interval longer than the length of instable condition of a servo loop for the slave main spindle. When the synchronizing error is larger than a predetermined limit value, the command value for the slave main spindle is gradually compensated in order to prevent the compensated command value from changing too abruptly.

3. 发明授权

US5313147A Digital servo-control apparatus 失效
标题翻译：数字伺服控制装置
公开(公告)号：US5313147A
公开(公告)日：1994-05-17
申请号：US764825
申请日：1991-09-24
申请人： Takao Yoneda , Tomonari Kato , Toshihiro Yonezu
发明人： Takao Yoneda , Tomonari Kato , Toshihiro Yonezu
IPC分类号： G05B11/32 , G05B19/19 , G05D3/12
CPC分类号： G05B19/19 , G05B2219/33224 , G05B2219/34047 , G05B2219/41319 , G05B2219/41427 , G05B2219/41429 , G05B2219/41431 , G05B2219/42034 , G05B2219/42062
摘要： A digital servo-control apparatus which controls the rotation of a servomotor on the basis of a digital position command value representative of a target position and a digital position feedback value output from a position detecting device. The apparatus comprises a device for calculating a feedforward value at intervals of a predetermined period on the basis of the amount of change of the position command value, a device for delaying the position command value by a period of time corresponding to an operation delay in the feedforward value calculating device, a device for calculating a velocity command value by adding the feedforward value to a deviation of the position feedback value from the position command value delayed by the delay device, and a device for driving the servomotor according to the velocity command value determined by the calculating device.
摘要翻译：一种数字伺服控制装置，其基于代表目标位置的数字位置指令值和从位置检测装置输出的数字位置反馈值来控制伺服电动机的旋转。该装置包括用于基于位置指令值的变化量来计算预定周期的间隔的前馈值的装置，用于将位置指令值延迟与对应于位置指令值的操作延迟相对应的时间段的装置前馈值计算装置，用于通过将前馈值与由延迟装置延迟的位置指令值的位置反馈值的偏差相加而计算速度指令值的装置，以及根据速度指令值驱动伺服电动机的装置由计算装置确定。

4. 发明授权

US5060164A Numerical controller for machining a non-circular workpiece and capable of calculating profile data 失效
标题翻译：用于加工非圆形工件和计算轮廓数据的数控机
公开(公告)号：US5060164A
公开(公告)日：1991-10-22
申请号：US383528
申请日：1989-07-24
申请人： Takao Yoneda , Naoki Arimoto , Toshihiro Yonezu
发明人： Takao Yoneda , Naoki Arimoto , Toshihiro Yonezu
IPC分类号： B23Q15/00 , B24B5/42 , B24B19/12 , G05B19/18 , G05B19/404
CPC分类号： B24B5/42 , G05B19/184 , G05B2219/45161 , G05B2219/50336
摘要： When machining cams with the same profile data, finished shape errors tend to increase as the diameter of a grinding wheel decreases. In order to keep the finished shape errors within a tolerance, the profile data used for machining must be renewed with new profile data corresponding to the present diameter of the grinding wheel. In the disclosed numerically controlled cam grinding machine, optimum wheel diameters, at which new profile data must be calculated, are decided automatically. The numerical controller calculates the marginal diameters which require renewal of profile data based upon the machining tolerance when a new grinding wheel is attached to the wheel head. After that, the numerical controller calculates new profile data from the marginal wheel diameter and lift data, when the present wheel diameter reaches into one of the marginal wheel diameters. The old profile data is renewed with the newly calculated profile data corresponding to the marginal wheel diameter.

5. 发明授权

US4988937A Synchronous control system and method therefor 失效
标题翻译：同步控制系统及其方法
公开(公告)号：US4988937A
公开(公告)日：1991-01-29
申请号：US485567
申请日：1990-02-27
申请人： Takao Yoneda , Hiroshi Nakano , Toshihiro Yonezu
发明人： Takao Yoneda , Hiroshi Nakano , Toshihiro Yonezu
IPC分类号： B23Q15/00 , G05B19/18 , G05B19/416 , G05D3/00 , G05D3/12
CPC分类号： G05B19/416 , G05B2219/50234
摘要： A synchronous control system for a pair of spindles of a machine tool including a master spindle and a slave spindle. Current positions of the main spindles are detected, and a deviation between the detected current positions is calculated. In case the deviation is within 180 degrees, the current position of one of the main spindles which precedes in the forward direction of rotation is determined as a target position for positioning. In case the deviation is greater than 180 degrees, the detected current position of the master spindle or the slave spindle is offset by an amount equal to an integral number of times 180 degrees so that the deviation between current positions of the main spindles after such offset is within 180 degrees. Then, that one of the current position of the main spindle thus offset and the current position of the other main spindle not offset which precedes in the forward direction of rotation is determined as a common target position for positioning. When a positioning instruction is provided by an operator, the main spindle which follows in the forward direction of rotation is controlled so that the position of rotation of the following main spindle approaches the target position.

6. 发明授权

US6006141A Numerical controller 失效
标题翻译：数控机
公开(公告)号：US6006141A
公开(公告)日：1999-12-21
申请号：US886544
申请日：1997-07-01
申请人： Takao Yoneda , Takayuki Hotta , Moriaki Sakakura
发明人： Takao Yoneda , Takayuki Hotta , Moriaki Sakakura
IPC分类号： G05B19/18 , G05B19/414 , G06F19/00
CPC分类号： G05B19/4148 , G05B2219/32129 , G05B2219/33283 , G05B2219/33284 , G05B2219/36396
摘要： A numerical controller includes a control section for controlling operation of a machine, an application section which is separated from the control section and adapted to input data into the control section and to monitor a control status, and a communication network for connecting the control section and the application section. This structure makes it possible to reduce the overall size of the numerical controller. A program for a new function or an abnormality diagnosis program is also transmitted from the application section to the control section when required.
摘要翻译：数字控制器包括用于控制机器的操作的控制部分，与控制部分分离并适于将数据输入控制部分并监视控制状态的应用部分，以及用于连接控制部分和应用部分。该结构使得可以减小数字控制器的总体尺寸。当需要时，从应用部分向控制部分发送新功能或异常诊断程序的程序。

7. 发明授权

US5562526A Method and apparatus for grinding a workpiece 失效
标题翻译：用于研磨工件的方法和设备
公开(公告)号：US5562526A
公开(公告)日：1996-10-08
申请号：US219273
申请日：1994-03-29
申请人： Takao Yoneda , Takayuki Hotta
发明人： Takao Yoneda , Takayuki Hotta
IPC分类号： B24B49/14 , B24B51/00 , G05B19/416 , B24B49/00
CPC分类号： B24B51/00 , B24B49/14 , G05B19/4166 , G05B2219/37345 , G05B2219/49219 , G05B2219/49316 , G05B2219/50087
摘要： A numerical controlled grinding machine for grinding a workpiece, in which a thermal displacement taking place between a wheel head and the workpiece, is detected with the workpiece not being subjected to the bending due to a grinding resistance. The thermal displacement is calculated from the difference between the present position of the wheel head detected by a position detector and the theoretical position thereof converted from the diameter of the workpiece measured by an in-process measuring device. The position data for the wheel head stored in a numerical controller is compensated for the calculated thermal displacement for use in the subsequent control of feed movement between the workpiece and the wheel head.
摘要翻译：一种用于研磨工件的数控磨削机，其中由于磨削阻力，工件不会受到弯曲的影响，在工件之间发现轮头和工件之间发生热位移。根据由位置检测器检测到的车轮头的当前位置与由工件测量装置测量的工件直径转换的理论位置之间的差计算热位移。补偿存储在数值控制器中的砂轮头的位置数据用于计算的热位移，用于随后的工件和砂轮头之间进给运动的控制。

8. 发明授权

US5562523A Method and apparatus for grinding a workpiece 失效
标题翻译：用于研磨工件的方法和设备
公开(公告)号：US5562523A
公开(公告)日：1996-10-08
申请号：US316373
申请日：1994-09-30
申请人： Hiroaki Asano , Takao Yoneda , Takayuki Hotta
发明人： Hiroaki Asano , Takao Yoneda , Takayuki Hotta
IPC分类号： B24B47/20 , B24B5/04 , B24B49/04 , B24B49/10 , B24B51/00 , G05B19/416 , B24B49/00
CPC分类号： B24B51/00 , B24B49/04 , G05B19/4166 , G05B2219/37345 , G05B2219/49184 , G05B2219/49316 , G05B2219/50087
摘要： In a grinding method wherein a rotating workpiece and a rotating grinding wheel are relatively moved toward and away from each other and wherein at least three of rough, fine and finish grinding step are performed successively at high, medium and low infeed rates respectively for grinding the workpiece, the grinding wheel is retracted to a back-off position at the end of the rough grinding step. To calculate the back-off position, a first residual grinding amount which is left unground due to the bending of the workpiece is calculated based upon the diameter of the workpiece and the position of the grinding wheel which are detected respectively by an in-process measuring device and an absolute encoder at the end of the rough grinding step, and a second residual grinding amount of the workpiece at the end of the fine grinding step is estimated based upon the first residual grinding amount and a third residual grinding amount which has been calculated at the end of the finish grinding step for a preceding workpiece portion. The back-off position is calculated from the difference between the first and second residual grinding amounts.
摘要翻译：在其中旋转工件和旋转砂轮彼此相对移动并相互移动的研磨方法中，其中分别以高，中和低进给速度连续地执行粗，精和精磨阶段中的至少三个，用于研磨工件时，在粗磨阶段结束时，砂轮回缩到回退位置。为了计算回退位置，基于工件的直径和砂轮的位置来计算由于工件的弯曲而未被磨削的第一残余磨削量，其通过进程中的测量分别被检测装置和粗磨步骤结束时的绝对编码器，并且基于已经计算出的第一残余研磨量和第三残余研磨量来估计在细研磨步骤结束时的工件的第二残余磨削量在前一工件部分的精磨步骤结束时。回退位置是根据第一和第二残余研磨量之差计算的。

9. 发明授权

US5191538A Apparatus for displaying operation sequence of numerically controlled machine tool 失效
标题翻译：显示数控机床操作顺序的装置
公开(公告)号：US5191538A
公开(公告)日：1993-03-02
申请号：US562630
申请日：1990-08-03
申请人： Takao Yoneda , Naoki Arimoto , Takayuki Hotta
发明人： Takao Yoneda , Naoki Arimoto , Takayuki Hotta
IPC分类号： B23Q17/00 , G05B19/4063
CPC分类号： G05B19/4063 , G05B2219/35291
摘要： An apparatus for displaying an operation sequence of a machine tool such as a grinding machine which is controlled by a numerical controller. During operation, successive operations instructed by a machine operator are stored in the memory of the numerical controller along with successive numerical commands which are executed during the successive operations. When a malfunction occurs in the machine tool, the storing operation is stopped, and the successive operations and the successive numerical commands executed before the occurrence of the malfunction are displayed on a display device for analyzing the cause of the malfunction.

10. 发明授权

US5031107A Numerical control apparatus for machining non-circular workpieces 失效
标题翻译：用于加工非圆形工件的数控机床
公开(公告)号：US5031107A
公开(公告)日：1991-07-09
申请号：US331964
申请日：1989-04-03
申请人： Ikuo Suzuki , Takao Yoneda
发明人： Ikuo Suzuki , Takao Yoneda
IPC分类号： G05B19/4093 , B24B19/12 , B24B51/00 , G05B19/18 , G05B19/4103
CPC分类号： B24B51/00 , B24B19/12 , G05B19/184 , G05B2219/35098 , G05B2219/35525 , G05B2219/37617 , G05B2219/45218 , G05B2219/50087
摘要： A numerical control apparatus for machining non-circular workpieces such as a cam and the like is disclosed. In the present invention, roughing profile data and finishing profile data are generated from lift data regulating the shape of non-circular workpiece. The roughing profile data are obtained from roughing lift data. The roughing lift data are generated as changing smoothly such that the deviation from the lift data regulating the finished shape presents within the tolerance of allowance at finishing, and quadratic differential components related to the rotational angle are smaller than the predetermined value. Machinings are performed by the roughing profile data at roughing and by the finishing profile data at finishing. As a result, the high-speed machinings are possible and the machining cycle time can be shortened.
摘要翻译：公开了一种用于加工诸如凸轮等的非圆形工件的数字控制装置。在本发明中，从调整非圆形工件的形状的升降数据生成粗加工轮廓数据和精加工轮廓数据。粗加工轮廓数据从粗加工数据获得。产生粗加工数据，以平滑地变化，使得与调整成品形状的升程数据的偏差在精加工中呈现在容差范围内，与旋转角度相关的二次微分分量小于预定值。通过粗加工的粗加工轮廓数据和精加工的精加工轮廓数据进行加工。因此，能够进行高速加工，能够缩短加工周期。

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