• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A control circuit for stopping a spindle 1 at a predetermined rotational position, of the type having a position sensor 5 for producing a zero volt signal when a specified point on the spindle 1 arrives at the predetermined rotational position, and for producing a voltage which is positive or negative when the specified point on the spindle 1 is in the vicinity of the predetermined rotational position on either the left or right side thereof, and an orientation control circuit 8 for stopping the spindle drive motor 9 when the output signal from the position sensor 5 attains the value of zero volts, thereby to stop the specified point on the spindle 1 at the predetermined rotational position. The control circuit is further provided with a position adjustment circuit 6 for adjusting the rotational position, of the specified point on the spindle 1, at which the output signal from the position sensor 5 crosses the zero volt line. The position at which said specified point is stopped is adjusted by the position adjustment circuit 6, whereby it is possible to correct an error in the stopping position which results from a position sensor mounting error.
    公开号:SU1294297A3
    申请号:SU803222705
    申请日:1980-12-31
    公开日:1987-02-28
    发明作者:Кохзаи Есинори；Фуиока Есики；Ота Наото
    申请人:Фудзицу Фанук Лимитед (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to a control system for stopping the spindle in a machine in a predetermined position of rotation,
    The purpose of the invention is to improve the accuracy of the spindle potentiation with random displacements of sensor elements.
     The goal is achieved due to the possibility of controlling the shift of the zero point of the signal transition of the electromagnetic sensor from the positive to the negative and vice versa.
    FIG. 1 is a simplified block diagram of a control system; in fig. 2 is a signal diagram of an electromagnetic spindle position sensor; in fig. 3 is a diagram of the bias of the signals of an electromagnetic sensor with a possible error in installing it; in fig. 4 is a diagram of the position adjustment unit.
    The device works as follows.
    The spindle 1 is provided with a keyed tongue 2 for coupling with a key 3 on the cutting tool. The electromagnetic sensor consists of a magnet 4 attached to the side of the spindle 1 in such a way that the center of the magnet coincides with the line through the starting point O and the case 5 with electromagnetic coils. At the time of passage of the magnet 4, a waveform is formed in the coils of the housing 5, which is close to a sinusoidal, crossing zero-voltage line. The received signal is supplied to the first input of the spindle position adjustment unit 6, the second input of which is connected to the output of the regulator 7, which regulates the displacement of the zero crossing point in the position adjustment unit 6 electrically. The orientation control unit 8 receives the output signal of the position control circuit and instructs the engine 9 of the spindle 1 to stop at a given point. In this case, it is the center of the keyway 2. This is done when the magnet 4 resists the coils of the housing 5. The switch 10 at the input of the electric motor
    9 serves to control its speed and position.
    During processing switch
    10 connected to contact a and mouth
    five
    0
    five

    ABOUT
    ,
    0
    five
    F5
    A speed control unit 11 is connected to an electric motor 9. In accordance with a given cnD speed, the electric motor 9 rotates the spindle 1. To effect the tool change, the set speed changes and the device 11 issues a command to slow down the rotation. When the magnet 4 approaches the coils of the housing 5, a command is sent from the control system (not shown) to the orientation mode. Switch 10 is connected to pin b and block 8 turns on a comparator that compares the output signal of the position sensor with the zero position signal (Volt zero) and thus controls the rotation of the drive motor 9 to the zero signal from the sensor, after which the motor 9 stops, positioning the spindle .
    In case of accidental displacement of the housing 5 from the set position, the keyway groove 2 on the spindle 1 does not stop in the preset position and thus, when changing the tool, does not fit with the key 3 of the tool. If you look at the signals (Fig. 3), then the intersection point zero shifts to point 0 or point 0. As a result, a spindle offset occurs. In this case, the random displacement of the housing 5 is corrected by the regulator 7. This adjustment is made in the stop position of the spindle, which is caused by the random displacement of the housing 5.
    The position adjusting unit 6 consists of an operational amplifier 12, whose amplitude of the output voltage is regulated by a resistor 13.
    The ruler 7 includes an adjustable resistor 14 for shifting the zero point of intersection. The zero-crossing point of the output voltage of the amplifier 12 is shifted by changing the bias voltage supplied from the resistor 14 of the regulator 7 to the positive input of the amplifier 12,
    The structure and operation of the spindle position sensor does not differ from the known sensors of this type.
    Thus, the proposed control scheme provides an increase in the positioning accuracy of the spindle with a random displacement of the sensor elements by an electrical shift.
    the intersection point of the zero signal spindle offset.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    A control system for stopping the spindle in a predetermined position, comprising an orientation control unit, a speed control device, a switch intended to be connected to a spindle motor by a control system command, and an electromagnetic spindle position sensor connected to an orientation control unit, characterized in that in order to increase accuracy, the control system is equipped with a spindle position adjustment unit with two inputs and a regulator, the adjustment unit being Neither the first input is connected to the output of the electromagnetic position sensor, the second input to the output of the regulator, and the output to the orientation control unit.
    FIG.
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    Editor N. Klishtulinets
    Compiled by V. Zhiganov
    Tehred A. Kravchuk Proofreader M. Sharoshi
    Order 399 / 61Terage 787 Subscription
    VNIIPI USSR State Committee
    for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
    Production and printing company, Uzhgorod, st. Project, 4
    (rig. / (.
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    同族专利:
    公开号 | 公开日
    EP0032301A2|1981-07-22|
    EP0032301A3|1982-05-12|
    DE3071980D1|1987-07-23|
    US4403179A|1983-09-06|
    EP0032301B1|1987-06-16|
    JPS56102449A|1981-08-15|
    JPS6247655B2|1987-10-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2753502A|1952-12-02|1956-07-03|Bardons And Oliver Inc|Electric motor control for spindle positioner|
    US3349303A|1964-03-04|1967-10-24|Hartman Metal Fabricators Inc|Mechanism for precisely positioning a moving part relative to a cooperating part|
    GB1154141A|1966-01-10|1969-06-04|Nat Res Dev|Improvements in and relating to Electro-Motive Apparatus.|
    US3393588A|1966-03-08|1968-07-23|Atomic Energy Commission Usa|Spindle growth compensating system|
    US3449554A|1967-08-28|1969-06-10|Gen Electric|Offset compensation for numerical controls|
    US3612976A|1969-04-09|1971-10-12|Inductosyn Corp|Position control system|
    US3581204A|1969-04-14|1971-05-25|Dow Chemical Co|Electromechanical recorder automatic zero apparatus|
    US3593091A|1969-04-24|1971-07-13|Pratt & Whitney Inc|System for positioning movable members with absolute dimension with selectable offset point|
    FR2147009B1|1971-07-23|1974-09-27|Robert Jean|
    JPS496858A|1972-05-08|1974-01-22|
    GB1459746A|1972-12-23|1976-12-31|Pye Ltd|Positioning systems for work-tables|
    GB1390753A|1973-12-04|1975-04-16|Foxboro Co|Positioning means|
    IT1115938B|1976-08-20|1986-02-10|Hurth Masch Zahnrad Carl|DEVICE FOR THE CONTROL AND POSITIONING OF A SLIDE IN A MACHINE TOOL|
    JPS54132090A|1978-04-03|1979-10-13|Fanuc Ltd|Error correction system for numerical control|
    US4204782A|1978-06-09|1980-05-27|Beck Hans W|Automatic sizing system for numerically controlled machine|
    DE2847510C2|1978-11-02|1989-02-16|Hueller Hille Gmbh, 7140 Ludwigsburg, De|JPS5794810A|1980-12-04|1982-06-12|Fanuc Ltd|Main shaft stopping device at constant position|
    DE3110949C2|1981-03-20|1989-11-02|Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De|
    US4731579A|1982-10-12|1988-03-15|Polaroid Corporation|Magnetic position indicator and actuator using same|
    JPS6038658A|1983-08-10|1985-02-28|Mitsubishi Electric Corp|Speed detecting apparatus|
    JP2824649B2|1988-09-13|1998-11-11|ファナック株式会社|Spindle controller|
    US5200747A|1990-12-13|1993-04-06|Bourns, Inc.|Turn counting position sensor|
    US5206570A|1991-03-19|1993-04-27|Maxtor Corporation|Actuator servo compensation method|
    US5602449A|1992-04-13|1997-02-11|Smith & Nephew Endoscopy, Inc.|Motor controlled surgical system and method having positional control|
    US5672945A|1992-04-13|1997-09-30|Smith & Nephew Endoscopy, Inc.|Motor controlled surgical system and method having self clearing motor control|
    US5347204A|1992-10-06|1994-09-13|Honeywell Inc.|Position dependent rate dampening in any active hand controller|
    US6245084B1|1998-10-20|2001-06-12|Promex, Inc.|System for controlling a motor driven surgical cutting instrument|
    US6850022B2|2003-01-15|2005-02-01|Siemens Vdo Automotive Inc.|Method and system for determining electronic commutation in brushless DC machines irrespective of the placement of rotor position sensors|
    KR20070046088A|2004-07-28|2007-05-02|지에스아이 그룹 리미티드|Machining spindle speed probes|
    JP6301985B2|2016-02-19|2018-03-28|ファナック株式会社|Spindle phase indexing device for machine tools|
    CN110597181B|2019-08-19|2021-07-16|广州明珞汽车装备有限公司|Control method, system and storage medium for positioning device based on origin setting|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP54172682A|JPS6247655B2|1979-12-31|1979-12-31|
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