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1. 发明专利

JPS54132881A PRECISION ANGLEEDIVIDER 失效
公开(公告)号：JPS54132881A
公开(公告)日：1979-10-16
申请号：JP4067778
申请日：1978-04-06
申请人： KOMATSU MFG CO LTD
发明人： CHIBA JIROU
IPC分类号： B23Q16/02 , G01B7/30
摘要： PURPOSE:To provide a standard device such that the numerical value obtained by dividing 360 degrees by the resolution of a detector is again divided by a fixed divisor and the division precision is made at all times less than the resolution of the above detector by rounding off the dicimal fraction of that divided value. CONSTITUTION:Angle-divide instruction device 1 outputs divide instruction signal DC based on divisor n, position-determination start instruction signal PC, and the setting of the least divisor. This signal is amplified by amplifier 2 and is given to servomotor 3 and then it is given to division table 5. For angle detector 6, an incremental type device is used, for example. It detects the rotational angle of table 5 in the resoluion of 1/ deg.C(C>1), and outputs one pulse for every 1/ deg. and gives it to device 1 as feedback, (C is the number obtained by dividing medium section M by 2.)

2. 发明专利

JPS5471483A DEVICE FOR MEASURING DIAMETER OF WORK TO BE GROUND 失效
公开(公告)号：JPS5471483A
公开(公告)日：1979-06-08
申请号：JP13850077
申请日：1977-11-18
申请人： KOMATSU MFG CO LTD
发明人： CHIBA JIROU
IPC分类号： G01B7/12 , B23Q15/02 , B24B49/02 , G01B7/00 , G01B21/10
摘要： PURPOSE:To improve efficiency of grinding operation by providing inside of work rest with a means of measuring diameter of a work to be ground. CONSTITUTION:When a crankshaft 1, being a work, is ground, switch is turned on and a coil is magnetized to attract a stylus 5 into the coil and then in a differential transformer 4 so as to keep it away from a crank pin 1a. When diameter of the crank pin 1a is miasured, the atorementioned coil is demagnetized to remove the aforementioned attraction, and the stylus 5 is pushed out from the differential transformer 4 by springing force and brought in contact with the creank pin 1 a which was advanced into a groove on the tip of a work rest 3. The stylus 5 which was thus provided in the work rest 3 expands and contracts according to diameter of the crank pin 1 a allowing 5 a to shift in the differential transformer and then a signal corresponding to the aforementioned diameter is emitted from the differential transformer.

3. 发明专利

JPS5471481A DEVICE FOR PREVENTING A WORK FROM BENDING 失效
公开(公告)号：JPS5471481A
公开(公告)日：1979-06-08
申请号：JP13751677
申请日：1977-11-16
申请人： KOMATSU MFG CO LTD
发明人： CHIBA JIROU
IPC分类号： B23Q1/00 , B23Q1/76 , B24B41/06
摘要： PURPOSE:To effectively prevent a work from bending by presseing a work rest against a work appropriately in accordance with pressing force of a grindstone. CONSTITUTION:A work rest 7 is provided with a supporting body 8 which is capable of shifting freely in the direction perpendicularly to the pressing direction and of supporing fixedly in the pressing direction. Pressure of 2 pressure chambers, located in the aforementioned pressing direction of a static pressure bearing which supports with its shaft a chuck holding a work, is detected by a pressure detecter. Control signals with polarity and magnitude corresponding to deviation of these detected signals are issued as outputs from an amplifier. On the basis of these control signals and by driving the aforementioned supporting body 8 with cylinders 17 and 19, the work rest 7 is shifted so that the aforementioned deviation becomes zero. And by applying to V-shape pressing section of the work rest 7 an appropriate pressure according to the pressing force of a grindstone in operation, a work being ground is prevented from bending. In this manner, a work can be ground with high accuracy.

4. 发明专利

JPS5469894A GRINDING MACHINE 失效
公开(公告)号：JPS5469894A
公开(公告)日：1979-06-05
申请号：JP13713177
申请日：1977-11-15
申请人： KOMATSU MFG CO LTD
发明人： CHIBA JIROU , TSUJIKADO SEIJI , NISHIKI TETSUYA
IPC分类号： B24B49/02
摘要： PURPOSE:To control the position of a grinding wheel spindle after dressing, by determining a grinding wheel diameter after dressing with the signal of the position of the grinding wheel spindle at the time of dressing and the signal of the height of a test grinding work from the datum surface after dressing, and using the value of the diameter as a new wheel dimension datum. CONSTITUTION:A test grinding work 9 to be ground with a grinding wheel 5 which was finished dressing is placed on the base 2. A height detector 13, which detects the height of the ground surface of this test grinding work 9 from the base surface and outputs a signal corresponding to the height, is arranged on the base 2. A position detector 6, which detects the distance between the center of the grinding wheel 5 and the base surface and outputs a signal corresponding to the distance is provided, a wheel diameter after dressing is calculated by an arithmetic circuit 21 with the signals from the detectors 6 and 13, and a signal corresponding to the diameter is outputted to the control circuit 22 for the Y-axis of the grinder 1. By so doing, the control signal for the grinding wheel spindle is corrected, and works are ground accurately with the grinding wheel 5 after dressing.

5. 发明专利

JPS544541A DIGITAL DIFFERENTIATOR 失效
公开(公告)号：JPS544541A
公开(公告)日：1979-01-13
申请号：JP7006777
申请日：1977-06-13
申请人： KOMATSU MFG CO LTD
发明人： CHIBA JIROU
IPC分类号： G06F7/544 , G06F7/38

6. 发明专利

JPS53147645A METHOD OF DETECTING CROSSSLINE OF SURFACE 失效
公开(公告)号：JPS53147645A
公开(公告)日：1978-12-22
申请号：JP6388377
申请日：1977-05-31
申请人： KOMATSU MFG CO LTD
发明人： CHIBA JIROU , TAKAGI HIROYUKI
IPC分类号： B23K9/127 , B23K37/00

7. 发明专利

JPS5474088A NUMERICAL CONTROL SYSTEM OF MACHINE TOOL 失效
公开(公告)号：JPS5474088A
公开(公告)日：1979-06-13
申请号：JP14086777
申请日：1977-11-24
申请人： KOMATSU MFG CO LTD
发明人： CHIBA JIROU
IPC分类号： H02P29/00 , G05B19/18 , G05B19/404 , G05D3/12
摘要： PURPOSE:To provide a command value of servo system to develop in Fourier component, Fourier component thereof to make phase correction for every component, enabling the command function to obtain with the desired present value by their additions. CONSTITUTION:Tool control signals R, E, L are entered into the arithmetic unit 20. The speed instruction signal thetai is given into theta axis servo system 40 from the arithmetic unit 20. theta axis motor 42 is regulated to agree with the signal thetai. The present theta value supplied from theta axis servo system 40 is given into the arithmetic unit and adder 21. theta and angle correction value phi0 are applied to the adder. The power signal is applied to the straight line interpolation circuit 30. For the straight interpolation circuit, the straight line interpolated value Y (theta)i is produced from the register according to the command function formula developed in Fourier series. After converting to Y' (theta)i with the adder 23, a signal is given to Y axis servo system 50 to control the Y axis motor 52.

8. 发明专利

JPS5445471A NUMERICAL CONTROL SYSTEM FOR MACHINE TOOL 失效
公开(公告)号：JPS5445471A
公开(公告)日：1979-04-10
申请号：JP11243677
申请日：1977-09-19
申请人： KOMATSU MFG CO LTD
发明人： CHIBA JIROU
IPC分类号： B23Q15/24 , B23Q5/00 , G05B11/36
摘要： PURPOSE:To perform accurate control, by comparing a command to be applied to a servo-system with a feedback value as to each quadrant and discriminating the phase deviation of the feedback value and priviously correcting the command on the basis of the result of the discrimination. CONSTITUTION:Various signals necessary for machining are generated by an axis command generator 4 and are applied to a correcting function generator 5. Signals are applied from the correcting function generator 5 to an X-axis servo- system 6 and a Y-axis servo-system 9. An X-direction feedback vaule Xo detected by a position detector 7 of the X-axis servosystem 7 is applied to a discriminator 16. A command Xi of the correcting function generator 5 and signals Q1-Q4 for the respective guadrants are also applied to the discriminator 16, which thereby detects the phase difference between the feedback value and the command. A Y-direction feedback value Yo detected by a position detector 11 of the Y-axis servosystem 9 is applied to a discriminator 17, which likewise detects the phase difference.

9. 发明专利

JPS53117179A SERVO CONTROLLER 失效
公开(公告)号：JPS53117179A
公开(公告)日：1978-10-13
申请号：JP3142577
申请日：1977-03-22
申请人： KOMATSU MFG CO LTD
发明人： CHIBA JIROU
IPC分类号： G05D3/12 , G05B11/36 , G05D3/00
摘要： PURPOSE:To eliminate any position error in use of digital differentiator in digitizing input/output signal even the speed or the acceleration of command input is changed.

10. 发明专利

JPS5276249A DETECTING DEVICE FOR AUTOMATIC FILLET WELDING 失效
公开(公告)号：JPS5276249A
公开(公告)日：1977-06-27
申请号：JP15359475
申请日：1975-12-22
申请人： KOMATSU MFG CO LTD
发明人： CHIBA JIROU
IPC分类号： B23K9/127 , B23K9/12 , B23K37/00

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