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。

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。

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.

公开(公告)号：US4711054A

公开(公告)日：1987-12-08

申请号：US924777

申请日：1986-10-30

申请人： Toshio Tsujiuchi ,  Yoshinori Shinmura ,  Yukio Oda

发明人： Toshio Tsujiuchi ,  Yoshinori Shinmura ,  Yukio Oda

IPC分类号： B24B5/04 ,  B24B47/20 ,  B24B49/00 ,  G05B19/416 ,  B24B49/02

CPC分类号： G05B19/4166 ,  B24B41/065 ,  B24B5/04

摘要： In a numerical control grinding machine using a grinding wheel made of cubic boron nitride, a computerized numerical controller controls the infeed movement of a wheel head to effect a rough grinding and a first fine grinding on a rotating cylindrical workpiece by the grinding wheel and to halt the first fine grinding in response to a sizing signal from a sizing device which measures the diameter of the workpiece being ground. At the halt of the first fine grinding, the numerical controller advances rest jaws to press the workpiece upon the grinding wheel until another sizing signal is issued from the sizing device. Until the number of the workpieces ground after each truing operation reaches a predetermined number, the numerical controller increase the infeed rate of the grinding wheel in each of the rough and first fine grindings toward a desired infeed rate on a step-by-step basis. Further, the numerical controller diminishes a set size which determines the time point to issue the first-mentioned sizing signal from the sizing device, toward a desired set size on a step-by-step basis with the increases in number of the workpiece ground after each truing.

摘要翻译： 在使用由立方氮化硼制成的砂轮的数控磨床中，计算机化数值控制器控制砂轮头的进料运动，以通过砂轮对旋转的圆柱形工件进行粗磨和第一次细磨，并停止 响应于来自测量被研磨的工件的直径的施胶装置的施胶信号的第一次细研磨。 在第一次精细磨削停止时，数字控制器前进静止爪，将工件压在砂轮上，直到从定型装置发出另一个尺寸信号。 在每次修整操作达到预定数量之后研磨的工件数量之前，数值控制器将粗磨和第一细磨中的每个粗磨中的砂轮的进料速率逐步地朝着期望的进给速度增加。 此外，数字控制器减小设定的尺寸，该设定尺寸决定了从尺寸调节装置发出首先提到的尺寸信号的时间点，随着工件接地数量的增加而逐步地朝向期望的设定尺寸 每个修饰。

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.

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。

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。

公开(公告)号：US4551950A

公开(公告)日：1985-11-12

申请号：US634430

申请日：1984-07-26

申请人： Kunihiko Unno ,  Toshio Tsujiuchi ,  Yukio Oda

发明人： Kunihiko Unno ,  Toshio Tsujiuchi ,  Yukio Oda

IPC分类号： G01B21/00 ,  B24B53/00 ,  B24B53/08 ,  G05B19/18 ,  B24B53/14

CPC分类号： G05B19/182 ,  B24B53/08 ,  G05B2219/45159

摘要： A truing apparatus includes a truing tool supported on a tool support movable radially and axially of a grinding wheel having a rounded corner and drivable by a feed drive unit coupled to the tool support to move along a predetermined path for truing the rounded corner of the grinding wheel. At least one contact member for contacting outer peripheral and end surfaces of the grinding wheel is mounted on the tool support, and a sensor is also mounted on the tool support for detecting a contact between the contact member and the grinding wheel. A feed control system controls the feed drive unit for moving the truing tool along the predetermined path. The feed control system controls the feed drive unit so that the contact member will move radially and axially of the grinding wheel until the sensor is actuated immediately after one truing process and immediately before a next truing process. A grinding wheel position detector detects radial and axial positions of the grinding wheel when the sensor is actuated immediately after the one truing process and immediately before the next truing process. A correcting unit corrects the predetermined path along which the truing tool is to move in the next truing process based on the positions of the grinding wheel detected by the grinding wheel position detector immediately after the one truing process and immediately before the next truing process.

摘要翻译： 修整装置包括修整工具，该工具支撑件可在具有圆角的砂轮的径向和轴向上移动并且可通过联接到工具支撑件的进给驱动单元驱动的工具支撑件沿着预定的路径移动，以便研磨研磨的圆角 轮。 用于接触砂轮的外周和端表面的至少一个接触构件安装在工具支架上，传感器也安装在工具支架上，用于检测接触构件和砂轮之间的接触。 进给控制系统控制进给驱动单元，用于沿着预定路径移动修整工具。 进给控制系统控制进给驱动单元，使得接触构件将沿砂轮的径向和轴向移动，直到在一个修整过程之后立即致动传感器并且在下一个修整过程之前。 砂轮位置检测器在传感器在一个修整过程之后立即致动并且紧接在下一个修整过程之前，检测砂轮的径向和轴向位置。 校正单元基于在一次修整处理之后和紧接在下一个修整处理之前由砂轮位置检测器检测到的砂轮的位置来校正修整工具在下一个修整过程中要移动的预定路径。

公开(公告)号：US4502458A

公开(公告)日：1985-03-05

申请号：US459217

申请日：1983-01-19

申请人： Kunihiko Unno ,  Toshio Tsujiuchi ,  Yukio Oda

发明人： Kunihiko Unno ,  Toshio Tsujiuchi ,  Yukio Oda

IPC分类号： B24B53/08 ,  B24B53/06

CPC分类号： B24B53/08

摘要： An apparatus for truing a grinding wheel includes a stylus movable in response to movement of a truer in synchronism therewith, and a template disposed in confronting relation to the stylus with a gap left therebetween. The truer is controlled in its motion by servomotors driven in response to a command issued from a numerical control unit. When the truer is caused by the numerical control unit to move out of control for some reasons, the stylus is brought into engagement with the template, thereby protecting the truer and a grinding wheel being trued thereby against damage which would otherwise result from such uncontrolled movement of the truer. When the truer is to be advanced for truing infeed against the grinding wheel, the stylus is disconnected by a clutch device from the truer, and only the truer is moved in the forward direction while maintaining a proper gap between the stylus and the template.

摘要翻译： 用于修整砂轮的设备包括可响应于其同步的整修器的移动而移动的触针，以及与触针相对地设置的模板，其间留有间隙。 伺服电机响应于从数控单元发出的命令而驱动运行时，更精准的控制。 当由于某些原因造成数字控制单元移动失控时，触针与模板接合，从而保护修整器和砂轮，从而防止由于这种不受控制的运动而导致的损坏 的更真实 当矫正器要用于修整砂轮进给时，触针通过离合器装置与真实器断开，并且只有整流器在向前方向上移动，同时保持触针和模板之间的适当间隙。

公开(公告)号：US4235218A

公开(公告)日：1980-11-25

申请号：US8172

申请日：1979-01-31

申请人： Wataru Iida ,  Toshio Tsujiuchi

发明人： Wataru Iida ,  Toshio Tsujiuchi

IPC分类号： B24B53/00 ,  B24B53/07 ,  B24B53/14

CPC分类号： B24B53/07 ,  B24B53/00

摘要： An apparatus for truing and dressing a grinding wheel made of cubic boron nitride is provided. A support head supporting a truing wheel and another support head supporting a dressing roll are separately and independently arranged on a wheel support of a grinding machine. The truing wheel is rotated in the same direction as is the grinding wheel so as to true the grinding wheel in an up-cut manner, and the dressing roll is rotated in a direction opposite to that of the grinding wheel so as to dress the grinding wheel in a down-cut manner. The dressing roll is fed toward the grinding wheel to be ground thereby and then returned a predetermined amount away from the grinding wheel prior to a truing operation.

摘要翻译： 提供了一种用于修整和修整由立方氮化硼制成的砂轮的设备。 支撑修整轮的支撑头和支撑修整辊的另一个支撑头分别且独立地布置在研磨机的轮支撑件上。 修整轮沿与砂轮相同的方向旋转，以便以上切的方式使砂轮成真，并且修整辊沿与砂轮的方向相反的方向旋转，从而使研磨 轮下降的方式。 修整辊朝研磨轮进给，从而被磨削，然后在修整操作之前从磨轮返回预定量。