专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明专利

JPS6429908A METHOD FOR CONTROLLING CIRCULAR ARC LOCUS OF MULTI SPINDLE FEED DRIVING MECHANISM 失效
公开(公告)号：JPS6429908A
公开(公告)日：1989-01-31
申请号：JP18549687
申请日：1987-07-27
申请人： NIPPON KOKAN KK
发明人： MIURA YASUSHI , NAKAJIMA TATSUYA , INOKO MASAKUNI
IPC分类号： G05B19/18 , G05B19/404 , G05B19/4103
摘要： PURPOSE:To improve the accuracy of locus by correcting the position targeted value of each spindle based on the prediction value of the central angle of the circular arc and that of the square of the deviation of the central angle of the circular arc to obtain the same result as the negation of disturbance added in the radius direction of a circular arc. CONSTITUTION:The central angle theta0 of a targeted circular arc and the radius r0 of a targeted circular arc locus 5 are calculated from the position targeted value supplied to each spindle, and the central angle theta of the circular arc and the deviation DELTAtheta of the central angle of the circular arc at a circular arc locus 6 are estimated from the control characteristic of the central angle of the targeted circular arc and a calculated central angle theta of the targeted circular arc. And a vector proportional to the product of the square of the deviation DELTAtheta of the central angle of the circular arc whose size is estimated and the radius r0 of the targeted circular arc locus 5 in a direction advancing to the central angle theta of the circular arc estimated from the rotational center of the circular arc locus 6, and each axial component of the vector is added on the position targeted value of each shaft as a correction quantity. In such a way, it is possible to reduce the locus error of the circular arc locus by eliminating the influence of the disturbance without changing a position control system.

22. 发明专利

JPS63308605A POSITION LOOP GAIN ADJUSTING DEVICE FOR MULTI-AXIS SERVO MECHANISM 失效
公开(公告)号：JPS63308605A
公开(公告)日：1988-12-16
申请号：JP14324287
申请日：1987-06-10
申请人： NIPPON KOKAN KK
发明人： MIURA YASUSHI , NAKAJIMA TATSUYA
IPC分类号： G05B13/00 , G05B13/02 , G05B19/18 , G05B19/19 , G05D3/12
摘要： PURPOSE:To equally adjust the position loop again of respective driving axes and to accurately adjust it even after the machine is incorporated by calculating a command value for respective two axes and a position loop gain ratio for respective two axes from the half amplitude value of the sine wave component of a circular radius deviation detected from a response position. CONSTITUTION:A circular radius deviation calculating device 8 calculates a circular radius deviation r0-r based on present positions (x) and (y) of an X axis and a Y axis and command values (x) and (y) and a half amplitude value calculating device 9 obtains a half amplitude value E1R of the sine wave component based on a calculated circular half radius deviation r0-r. A position loop gain calculating device 10 obtains position loop gain ratios Ky/Kx based on an obtained half amplitude value E1R and calculates a position loop gain inversion Ky1 of a new Y axis from the position loop gain ratios Ky/Kx. Based on the gain inversion Ky1, the position loop gain calculated for the X axis and Y axis is calculated. Thus, even after the machine is incorporated, the position loop gain adjustment can be accurately executed.

23. 发明专利

JPS62293319A FORMATION OF ARC LOCUS FOR SERVO MECHANISM 失效
公开(公告)号：JPS62293319A
公开(公告)日：1987-12-19
申请号：JP13501986
申请日：1986-06-12
申请人： NIPPON KOKAN KK
发明人： NAKAJIMA TATSUYA , MIURA YASUSHI
IPC分类号： G05B19/42 , G05B19/4103 , G05B19/416
摘要： PURPOSE:To form a locus in a short time and to secure the excellent servo control properties by combining an equi-speed arc locus and an acceleration/ deceleration linear locus obtained by a quadruple polynomial related to time and forming an arc locus with addition of acceleration and deceleration. CONSTITUTION:The time 2ta needed for acceleration is decided and the position on an arc locus that is away from a position A by an amount equal to a linear shift carried out for the time ta at a fixed linear speed is defined at A . While a position which is ahead of the position A by the time ta against the scheduled shift start time point is defined as A . Then the coordinate values xi, yi and zi of a position Pi between positions A and A are defined as shown in equations. In such a way of formation of a locus, the continuous linear accelerations are secured at a terminal point in case other equi-linear speed loci (having linear acceleration set at zero) are connected to the preceding and next linear loci. Here both positions A and A , i.e., xa , ya , za , xa , ya and za can be obtained previously, therefore it is just required to calculate those equations for each sampling time in a drive mode of such a mechanism.

24. 发明专利

JPH1020917A CUTTING ORDER DETERMINING METHOD FOR TOOL MOVEMENT PATH FOR MACHINING 失效
公开(公告)号：JPH1020917A
公开(公告)日：1998-01-23
申请号：JP16886796
申请日：1996-06-28
申请人： NIPPON KOKAN KK
发明人： SUNAGA YOSHITAKA , MIURA YASUSHI , AOKI KIYOSHI , HIRANO HISASHI
IPC分类号： B23Q15/00 , G05B19/4093
摘要： PROBLEM TO BE SOLVED: To make an arithmetic processing easy and perform a processing in a short time by evaluating shape features of an uncut area and finding an evaluation position, finding a cross the section shape of the uncut area at the evaluation position, and determining the machining progress direction and cutting order on a small-diameter tool path based on the sectional shape. SOLUTION: The evaluation place is determined and a two-dimensional cross section shape is found; and plural tool paths are found, Z height values of the tool paths are found, and a 1st and a last tool path for machining are determined (steps 1-5). Then which side of a tool path about the travel direction of a tool the contact between the tool and a machining shape is on is calculated and in case of an up cut, the travel direction of the tool path is changed (steps 6 and 7). Further, a reference value for judging whether the tool is in two- surface cutting is calculated (step 8) and whether the object tool path is in two-surface cutting is calculated (step 9). Then the order of the tool paths is determined (step 10) and the tool paths are rearranged in order (step 11).

25. 发明专利

JPH03277459A MACHINING PRESSURE CONTROL DEVICE 失效
公开(公告)号：JPH03277459A
公开(公告)日：1991-12-09
申请号：JP7329490
申请日：1990-03-26
申请人： NIPPON KOKAN KK
发明人： MIURA YASUSHI , NAKAJIMA TATSUYA
IPC分类号： B24B17/10 , B24B17/00
摘要： PURPOSE:To make machining pressure constant and enable the application of extremely small machining pressure by applying the machining pressure using a solenoid linear actuator, and controlling the current of the solenoid linear actuator. CONSTITUTION:When machining is started, the height position of a grinding wheel 4, that is, the stroke of a solenoid linear actuator 11, is changed along the surface of a machined work P, but in spite of this, a control means 13 controls the current value continually in order to make the force constant copying with the stroke change to maintain the machining pressure to the set value. At this time, the weight of a tool holder 5 or the like does not act upon the machined work P, so that the machining pressure can be set quite small, as well as responsiveness can be improved.

26. 发明专利

JPH0373519B2 失效
公开(公告)号：JPH0373519B2
公开(公告)日：1991-11-22
申请号：JP22685384
申请日：1984-10-30
申请人： NIPPON KOKAN KK , NIPPON ZOSEN KENKYU KYOKAI , ISHIKAWAJIMA HARIMA JUKOGYO KK , KAWASAKI JUKOGYO KK , SUMITOMO JUKIKAI KOGYO KK , HITACHI ZOSEN KK , MITSUI ZOSEN KK , MITSUBISHI JUKOGYO KK
发明人： NAKAJIMA TOMOYUKI , MIURA YASUSHI , MIZOBUCHI MASATOSHI , IWASA SHIGEAKI , SHIMIZU AKIO , HAISHI SHIGEO , TSUKAHARA SHUNEI , AZEYANAGI YOICHI , CHUMA SHIGERU , CHIBA RYUJI
IPC分类号： B63B21/04

27. 发明专利

JPS63303402A DEVICE FOR CONTROLLING CIRCULAR ARCUATE LOCUS OF MULTI-AXIS SERVO MECHANISM 失效
公开(公告)号：JPS63303402A
公开(公告)日：1988-12-12
申请号：JP13890687
申请日：1987-06-04
申请人： NIPPON KOKAN KK
发明人： MIURA YASUSHI , NAKAJIMA TATSUYA
IPC分类号： G05D3/12 , G05B19/18 , G05B19/19
摘要： PURPOSE:To improve the accuracy of the circular locus of a multi-axis servomechanism, by supplying an aimed angular velocity omega0 obtained by differentiating an aimed value theta0 of a central angle after the angular velocity is multiplied by a feed-forward gain Kf. CONSTITUTION:The position (x) of a table 5 in the X-axis direction detected by a pulse generator 7X is fetched by a feed-forward controller 14Y of Y-axis and the position (y) of the table 5 in the Y-axis direction detected by another pulse generator 7Y is fetched by a feed-forward controller 14X of X-axis. The controllers 14X and 14Y respectively calculate uX=-Kf.omega0Y and uY=Kf.omega0X from the inputted values (x) and (y) and send the calculated results to adders 15X and 15Y. The adder 15X adds the speed command value of x-axis component calculated by a position controller 1X to the uX calculated by the controller 14X and the adder 15Y adds the speed command value of the y-axis component calculated by a position controller 1Y to the uY calculated by the controller 14Y. After the above-mentioned addition, the controllers 14X and 14Y output a speed command value which makes the deviations of the circular arcuate locus of a multi-axis servomechanism in the X-axis and Y-axis components zero.

28. 发明专利

JPH1020920A MACHINING DATA GENRATING METHOD 失效
公开(公告)号：JPH1020920A
公开(公告)日：1998-01-23
申请号：JP16920296
申请日：1996-06-28
申请人： NIPPON KOKAN KK
发明人： NAKANISHI MINORU , MIURA YASUSHI , AOKI KIYOSHI , HIRANO HISASHI
IPC分类号： B23Q15/00 , G05B19/4097
摘要： PROBLEM TO BE SOLVED: To generate a tool movement center track which is smooth along an asymmetrical compound curved surface by dividing the outer peripheral border curve of an object to be machined into curved lines, and calculating the tool movement center track based on an artificial rectangular spatial curved surface generated from the divided curved lines. SOLUTION: For graphic information data, a tool diameter, curved surfaces to be worked, and section points and machining conditions are inputted to find and compare the minimum radii of curvature of the curved surfaces to be machined with the tool diameter, thereby deciding whether or not machining is possible with a specific tool; and the outer peripheral border curves of the curved surfaces to be machined are searched for and found and divided by using the section points (steps S1-S4). Then an artificial shape having the divided curved lines as its sides is generated to form a rectangular spatial curved surface, the tentative contact point track of the tool is found to generate a UV net, and the virtual contact point track is so adjusted that the pitch of an actual contact track becomes less than a permissible value, thereby generating the actual contact point track (steps S5-S9).

29. 发明专利

JPH02130608A TRACKING CONTROL METHOD FOR SERVO MECHANISM 失效
公开(公告)号：JPH02130608A
公开(公告)日：1990-05-18
申请号：JP28401588
申请日：1988-11-11
申请人： NIPPON KOKAN KK
发明人： MIURA YASUSHI , NAKAJIMA TATSUYA
IPC分类号： G05B11/32 , G05D3/12
摘要： PURPOSE:To decrease a tracking error which is repeated with a same period, by correcting a target value which is supplied through a feed forward control system to a closing loop control system based on the tracking error before one period. CONSTITUTION:A repetition control system 5 is composed of filters 6 and 7 and adders 8 and 9. Auxiliary input quantity (u) is determined by the system 5 based on a tracking error (e) before one period and this input quantity (u) is sent to a closing loop control system 3. Then, a target value r(k) to be sent from a feed forward controller 4 is corrected. In tracking control, since the filter 6 for which a transmission function Gq(z ) goes to '1' in a low frequency area is adopted and the repetition control system 5 is constituted, the tracking error (e) can be decreased in a really important frequency area. Accordingly, to the input of the target value to be repeated with the same period, an output value can be tracked with high accuracy.

30. 发明专利

JPS6426908A CONTROL METHOD FOR ARC LOCUS OF BIAXIAL FEED DRIVE MECHANISM 失效
公开(公告)号：JPS6426908A
公开(公告)日：1989-01-30
申请号：JP18235287
申请日：1987-07-23
申请人： NIPPON KOKAN KK
发明人： MIURA YASUSHI , INOKO MASAKUNI
IPC分类号： G05B13/00 , G05B13/02 , G05B19/18 , G05B19/19 , G05B19/404
摘要： PURPOSE:To improve the arc locus accuracy by identifying the transmission function of the position control system of each feed axis and adding a compensation element where gain '1' and phase delay '0' are set for the frequency answer against the target arc angle frequency of a target arc locus to said control system. CONSTITUTION:The sine wave input containing only a specific frequency component prescribed by the center angle speed of a target circular arc is applied to the control system of each feed axis. Then a feed forward compensator 11 is set at the preceding stage of a position control system 6 so that the frequency answer of the control system of each feed axis is equal to gain '1' and phase delay 0 deg. with said specific frequency. An identifier 12 for transmission function of the system 6 outputs the parameter of the transmission function of the system 6 for calculation of the transmission function of the compensator 11. A new correcting target position Xr is operated from the calculated transmission function of the compensator 11 and the target position Xr of an axis X and sent to the system 6.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式