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1. 发明授权

US5303512A Method and apparatus for grinding a cylindrical surface of a workpiece by traverse grinding 失效
标题翻译：用于通过横向研磨研磨工件的圆柱形表面的方法和装置
公开(公告)号：US5303512A
公开(公告)日：1994-04-19
申请号：US902822
申请日：1992-06-23
申请人： Toshio Tsujiuchi , Tomoyasu Imai , Norio Ohta , Yukio Oda , Ryohei Mukai , Hisashi Nakamura , Takayuki Yoshimi
发明人： Toshio Tsujiuchi , Tomoyasu Imai , Norio Ohta , Yukio Oda , Ryohei Mukai , Hisashi Nakamura , Takayuki Yoshimi
IPC分类号： B24B1/00 , B24B5/01 , B24B5/04 , B24B49/03 , B24B49/04 , B24B49/16
CPC分类号： B24B1/00 , B24B49/03 , B24B49/04 , B24B5/01 , B24B5/04
摘要： A method and apparatus for grinding a cylindrical surface of a workpiece by a traverse movement of a grinding wheel having a relatively narrow grinding surface. To improve the cylindricity of cylindrical surface, the traverse grinding is divided into a rough traverse grinding and a finish traverse grinding. In the rough traverse grinding, a traverse girding is carried out with a large depth of cut which would causes a deterioration of the cylindricity at one end of the cylindrical surface. In the finish traverse grinding, a traverse girding is carried out with a small depth of cut to improve the cylindricity. In another embodiment, one of grinding conditions such as the traverse speed of the grinding wheel, the rotational speed of the workpiece and the peripheral speed of the grinding wheel is changed when the grinding wheel approaches an end of the cylindrical surface at which the traverse grinding ends so as to make the grinding force constant, thereby improving the cylindricity of the cylindrical surface. In other embodiments, the position of the wheel head is compensated based upon the measured diameter of the cylindrical surface so that the entire area of the cylindrical surface has a desired diameter. This compensation also improves the cylindricity of the cylindrical surface.
摘要翻译：一种用于通过具有相对窄的研磨表面的砂轮的横移来研磨工件的圆柱形表面的方法和装置。为了提高圆柱面的圆柱度，横向磨削分为粗加工磨削和精加工磨削。在粗加工研磨中，以大的切割深度进行横向加工，这将导致圆柱形表面的一端的圆柱度的劣化。在精加工磨削中，以较小的切削深度进行横向加工以提高圆柱度。在另一个实施例中，当研磨轮接近圆形表面的端部时，磨削条件（诸如砂轮的横动速度），工件的转速和砂轮的圆周速度之一变化，使磨削力保持恒定，从而提高圆筒面的圆筒度。在其他实施例中，基于圆柱形表面的测量直径来补偿轮头的位置，使得圆柱形表面的整个区域具有期望的直径。该补偿也提高了圆柱面的圆柱度。

2. 发明授权

US5228241A Method and machine for grinding 失效
标题翻译：研磨方法和机器
公开(公告)号：US5228241A
公开(公告)日：1993-07-20
申请号：US760931
申请日：1991-09-17
申请人： Norio Ohta , Yukio Oda , Hisashi Nakamura , Toshiaki Naya
发明人： Norio Ohta , Yukio Oda , Hisashi Nakamura , Toshiaki Naya
IPC分类号： B24B5/01 , B24B5/04
CPC分类号： B24B5/04
摘要： A machine for grinding a cylindrical surface and the end surface of a shoulder portion, both formed on a workpiece, using an angular grinding wheel. The end surface is perpendicular to the cylindrical surface. The grinding wheel has a first outer surface parallel to the axis of the workpiece and a second outer surface perpendicular to the first outer surface. The first outer surface has a cylinder-grinding parallel surface and a cylinder-grinding tilted surface. The parallel surface has a generatrix parallel to the generatrix of the cylindrical surface to be ground. The tilted surface is continuous with the parallel surface and has a generatrix tilted away from the generatrix of the cylindrical surface. The second outer surface has a shoulder-grinding parallel surface and a shoulder-grinding tilted surface continuous with this parallel surface. The shoulder-grinding parallel surface has a generatrix parallel to the end surface of the shoulder portion. The shoulder-grinding tilted surface has a generatrix tilted away from the end surface of the shoulder portion. The grinding wheel is fed into the shoulder portion from a given position located radially inside the end surface. Then, the wheel is moved radially outwardly to grind the end surface. Subsequently, the wheel is moved relative to the workpiece along the generatrix of the cylindrical surface away from the end surface to grind the cylindrical surface.

3. 发明授权

US4967515A Numerically controlled grinding machine 失效
标题翻译：数控磨床
公开(公告)号：US4967515A
公开(公告)日：1990-11-06
申请号：US381974
申请日：1989-07-19
申请人： Toshio Tsujiuchi , Norio Ohta , Masatomo Yoshimura
发明人： Toshio Tsujiuchi , Norio Ohta , Masatomo Yoshimura
IPC分类号： B24B47/25 , B24B47/22 , G05B19/416
CPC分类号： G05B19/4166 , G05B2219/37405 , G05B2219/41177 , G05B2219/45161
摘要： A numerical control grinding machine, in which rough grinding and finish grinding wheels are used to machine a workpiece into a predetermined shape. A sensor detects the finish grinding wheel contacting the workpiece surface when shifting from the rough grinding to finish grinding operations and determines its position. The numerical controller of the grinding machine calculates the difference between actual and theoretical sizes of the workpiece and completion of the rough grinding operation based on the finish grinding wheel position. After that, the controller compensates the rough grinding wheel position in the next machining cycle for the difference calculated by the controller.

4. 发明授权

US4956946A Numerically controlled grinding machine 失效
标题翻译：数控磨床
公开(公告)号：US4956946A
公开(公告)日：1990-09-18
申请号：US322300
申请日：1989-03-13
申请人： Toshio Tsujiuchi , Norio Ohta , Masatomo Yoshimura
发明人： Toshio Tsujiuchi , Norio Ohta , Masatomo Yoshimura
IPC分类号： B24B47/22 , B24B19/12 , B24B49/02 , B24B49/16 , B24B51/00 , G05B19/416
CPC分类号： B24B51/00 , B24B49/16 , G05B19/4163 , G05B2219/35525 , G05B2219/37285 , G05B2219/41177 , G05B2219/45161
摘要： A numerically controlled internal grinding machine for grinding a workpiece by a rough grinding operation with a rough grinding wheel and a finish grinding operation with a finish grinding wheel. The grinding machine detects the load power of a motor which drives the finish grinding wheel in order to determine a compensation value to enable subsequent compensation due to wear of the rough grinding wheel. In the successive rough grinding operation, the relative position of the workpiece is compensated for according to the determined compensation value, so that the diameter of the workpiece after the rough grinding operation is maintained at a desired constant value regardless of the wear of the rough grinding wheel.
摘要翻译：一种数控内磨床，用于通过粗磨砂轮进行粗磨和精磨砂轮的精磨操作来研磨工件。研磨机检测驱动精磨轮的电机的负载功率，以便确定补偿值，以便能够由于粗磨轮的磨损而进行后续补偿。在连续粗磨操作中，根据确定的补偿值补偿工件的相对位置，使得粗磨后的工件直径保持在所需的常数值，而与粗磨的磨损无关轮。

5. 发明授权

US4490946A Grinding wheel feeder in grinding machines 失效
标题翻译：研磨机砂轮给料机
公开(公告)号：US4490946A
公开(公告)日：1985-01-01
申请号：US453830
申请日：1982-12-28
申请人： Toshio Tsujiuchi , Takao Yoneda , Norio Ohta
发明人： Toshio Tsujiuchi , Takao Yoneda , Norio Ohta
IPC分类号： B24B47/22 , B24B47/25 , B24B49/18 , B24B51/00 , G05B19/18 , B24B49/04
CPC分类号： B24B49/18
摘要： Wear on the dressing tool is derived from an amount of movement that a grinding wheel is advanced until issuance of a signal from a sizing device for correcting data on the radius of the grinding wheel. The data on the radius of the grinding wheel is thus indicative of an actual radius of the grinding wheel regardless of a variation in the grinding wheel radius due to the wear of a dressing tool. Accordingly, the grinding surface of the grinding wheel can be exactly positioned at a grinding start position after the grinding wheel has been returned to its original position upon power supply failure, emergency machine shutdown or the like, so that any unwanted interference between the grinding wheel and a workpiece can be avoided.
摘要翻译：修整工具上的磨损源自砂轮前进的运动量，直到发出来自尺寸调整装置的信号，以校正磨轮半径上的数据。砂轮半径的数据因此表示砂轮的实际半径，而不管由于修整工具的磨损造成砂轮半径的变化。因此，在砂轮在电源故障，应急机器停机等之后已经返回到原来的位置之后，磨轮的研磨面可以精确地定位在研磨开始位置，使得砂轮之间的任何不期望的干涉并且可以避免工件。

6. 发明授权

US4873793A Numerically controlled machine tool 失效
标题翻译：数控机床
公开(公告)号：US4873793A
公开(公告)日：1989-10-17
申请号：US92689
申请日：1987-09-03
申请人： Hiroaki Asano , Toshio Tsujiuchi , Takao Yoneda , Nobuhiro Ishihara , Toshio Maruyama , Norio Ohta
发明人： Hiroaki Asano , Toshio Tsujiuchi , Takao Yoneda , Nobuhiro Ishihara , Toshio Maruyama , Norio Ohta
IPC分类号： G05B19/18 , G05B19/23
CPC分类号： G05B19/232 , G05B19/184 , G05B2219/41177 , G05B2219/41186 , G05B2219/50057 , G05B2219/50211
摘要： A numerically controlled machine tool for machining a non-circular workpiece according to profile data. The servomotor drive unit of the machine tool includes a frequency voltage converter which outputs a velocity compensation signal proportional to the frequency of position command pulses in the servomotor drive units. A position error signal is modulated by the velocity compensation signal. The numerical controller of the machine tool can measure the position error and phase error, and can compensate for these errors. The numerical controller operates according to ideal profile data and measures the actual position change of a tool slide corresponding to the angle position change of a main spindle. Then, the numerical controller calculates the position error and phase error depending on the actual position change and ideal profile data, and produces execution profile data which are compensated for position error. During machining operation, the numerical controller offsets the rear out position of the execution profile data by the calculated phase error so as to eliminate the phase error.

7. 发明授权

US4570387A Centerless grinding machine 失效
标题翻译：无心磨床
公开(公告)号：US4570387A
公开(公告)日：1986-02-18
申请号：US607213
申请日：1984-05-04
申请人： Kunihiko Unno , Toshio Tsujiuchi , Norio Ohta
发明人： Kunihiko Unno , Toshio Tsujiuchi , Norio Ohta
IPC分类号： B24B5/18 , B24B5/22 , B24B49/18 , B24B49/04
CPC分类号： B24B49/183 , B24B5/22
摘要： In a centerless grinding machine, a work blade for rotatably carrying a workpiece is movable by a blade feed device in a direction normal to a first line extending across the axes of grinding and regulating wheels. Present diameters of the wheels, a desired finish diameter of the workpiece and a predetermined value representing the sine of a center height angle are stored in a data memory. The center height angle is represented by the sum of angles which a second line extending across the axes of the grinding wheel and the workpiece and a third line extending across the axes of the regulating wheel and the workpiece respectively make relative to the first line when the workpiece is finished to the desired finish diameter. When each of the wheels is dressed, a data rewriting circuit replaces the diameter of each wheel being stored in the data memory with a new diameter after such dressing. Based upon those data being stored in the data memory, a calculation circuit calculates a center height position at which the axis of the workpiece with the desired finish diameter is to be located for maintaining the center height angle constant independently of the variations in diameters of the wheels. The blade feed device positions the work blade to the calculated center height position so that the center height angle can be maintained constant.
摘要翻译：在无心研磨机中，用于可旋转地承载工件的工作刀片可以通过刀片进给装置沿垂直于穿过研磨和调节轮的轴线延伸的第一线的方向移动。车轮的现有直径，工件的期望成品直径和表示中心高度角的正弦的预定值存储在数据存储器中。中心高度角由两角度之和表示，第二条线延伸穿过砂轮和工件的轴线，并且横跨调节轮和工件的轴线延伸的第三条线分别相对于第一条线条形成工件完成到所需的最终直径。当每个车轮被修整时，数据重写电路在这样的修整之后用新的直径代替存储在数据存储器中的每个车轮的直径。基于存储在数据存储器中的数据，计算电路计算中心高度位置，在该中心高度位置处，具有期望的精加工直径的工件的轴线将被定位，以保持中心高度角恒定，而与直径的变化无关车轮。刀片进给装置将工作刀片定位到计算的中心高度位置，使得中心高度角度可以保持恒定。

8. 发明授权

US5183026A Method and apparatus for dressing an angular grinding wheel 失效
标题翻译：用于连接角锥磨轮的方法和装置
公开(公告)号：US5183026A
公开(公告)日：1993-02-02
申请号：US852566
申请日：1992-03-17
申请人： Norio Ohta , Yukio Oda , Toshiaki Naya , Tomoyuki Kasuga
发明人： Norio Ohta , Yukio Oda , Toshiaki Naya , Tomoyuki Kasuga
IPC分类号： B24B53/00 , G05B19/416
CPC分类号： B24B53/04 , G05B19/4166
摘要： A grinding machine having an angular type grinding wheel and a dressing apparatus therefor. The grinding wheel is formed with first and second grinding surfaces usable for grinding a cylindrical surface and shoulder end surface of a workpiece, respectively, and first and second reference surfaces parallel to the first and second grinding surfaces, respectively. The positions of the first and second reference surfaces and the first and second grinding surfaces are detected with touch bars before each dressing operation so as to obtain a first distance between the first grinding surface and first reference surface, and a second distance between the second grinding surface and second reference surface. After that, a first dressing amount for dressing the first grinding surface and a second dressing amount for dressing the second grinding surface are so determined that the first distance and the second distance would have a predetermined constant relationship after dressing operation. The first grinding surface is then dressed by the first dressing amount, while the second grinding surface is dressed by the second dressing amount.

9. 发明授权

US5155694A Apparatus for measuring groove positions of a workpiece 失效
标题翻译：用于测量工件的凹槽位置的装置
公开(公告)号：US5155694A
公开(公告)日：1992-10-13
申请号：US606082
申请日：1990-10-30
申请人： Takao Yoneda , Norio Ohta , Hiroshi Nakano , Hisashi Nakamura , Yasuyuki Sato
发明人： Takao Yoneda , Norio Ohta , Hiroshi Nakano , Hisashi Nakamura , Yasuyuki Sato
IPC分类号： G01B7/14 , G01B21/16
CPC分类号： G01B7/14 , G01B21/16
摘要： An apparatus for measuring groove positions of a workpiece includes a sensor for detecting grooves formed on the workpiece and a position sensor for detecting angular position of the workpiece with respect to a predetermined standard position, a measuring cycle memory means for storing several predetermined measuring cycles, a data input means for imputting and storing groove data indicating groove shape, a measuring control means for selecting a specific measurement cycle from the measurement cycle memory means based on the groove data to execute selected measurement cycle, a calculation processing means for executing calculation processing for determining the center positions of grooves, and a data output means for outputting and displaying the results of the calculations in order to inform an operator of the center positions of the grooves.

10. 发明授权

US06671233B1 Magneto-optical recording medium and reproduction method therefor 失效
标题翻译：磁光记录介质及其再现方法
公开(公告)号：US06671233B1
公开(公告)日：2003-12-30
申请号：US09625278
申请日：2000-07-25
申请人： Katsusuke Shimazaki , Yoshitane Tsuburaya , Norio Ohta , Hitoshi Watanabe , Hiroki Takao
发明人： Katsusuke Shimazaki , Yoshitane Tsuburaya , Norio Ohta , Hitoshi Watanabe , Hiroki Takao
IPC分类号： G11B1100
CPC分类号： G11B11/10515 , G11B11/10593 , G11B11/10595
摘要： A magneto-optical recording medium comprises, on a substrate, a dielectric layer, a GdFeCo reproducing layer, a non-magnetic layer, and a TbFeCo recording layer. Upon reproduction, a DC magnetic field Hex is applied in the recording direction, and a reproducing light beam is radiated while being modulated to have a low power and a high power in synchronization with a reproducing clock. The reproducing layer is a magnetic film which changes from in-plane magnetization into perpendicular magnetization at a critical temperature Tcr, which has a compensation temperature Tcomp between room temperature and a Curie temperature Tc, and which satisfies Troom
摘要翻译：磁光记录介质在基板上包括电介质层，GdFeCo再现层，非磁性层和TbFeCo记录层。在再现时，在记录方向上施加DC磁场Hex，并且在再现时钟同步的同时，将被再调制的再现光束照射成具有低功率和高功率。再现层是在室温和居里温度Tc之间具有补偿温度Tcomp的临界温度Tcr从平面内磁化转变为垂直磁化的磁性膜，其满足Troom

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