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    • 2. 发明申请
    • SYSTEM AND METHOD FOR CHECKING MECHANICAL PIECES, WITH WIRELESS SIGNAL TRANSMISSION
    • 用无线信号传输检测机械装置的系统和方法
    • WO2005098350A1
    • 2005-10-20
    • PCT/EP2005/051457
    • 2005-03-31
    • MARPOSS SOCIETA' PER AZIONICARLI, Carlo
    • CARLI, Carlo
    • G01B7/00
    • G01B7/002G01B21/04G01B2210/58
    • A system for detecting the position and/or the dimensions of mechanical pieces (3) includes a checking probe (1) with detection devices (2) and a remote transmitter (4), a receiver (7) being remotely placed from the probe to wirelessly receive, from the remote transmitter, pulse signals (5) indicative of the state of the probe. The receiver includes automatic control circuits that detect the presence of noises (NS) on the basis of attributes, e.g. the distribution in amplitude, of the received signal and, consequently, dynamically vary the sensitivity of the receiver, e.g. by acting on the amplification of the received signal or on a threshold (VTH) with which the received signal is compared. The pulse signals can be of optical type and the automatic control of sensitivity can be active in the presence of noise signals emitted by lamps located in the environment.
    • 用于检测机械件(3)的位置和/或尺寸的系统包括具有检测装置(2)和远程发射器(4)的检查探针(1),从探针远程放置的接收器(7) 从远程发射机无线地接收指示探测器状态的脉冲信号(5)。 该接收机包括基于属性(例如,基于)检测噪声(NS)的存在的自动控制电路。 接收信号的幅度分布,并因此动态地改变接收机的灵敏度,例如, 通过对接收信号的放大作用或者与接收信号进行比较的阈值(VTH)进行比较。 脉冲信号可以是光学类型,并且在存在由位于环境中的灯发出的噪声信号的情况下,灵敏度的自动控制可以是有效的。
    • 3. 发明申请
    • A POSITION MEASUREMENT APPARATUS
    • 位置测量装置
    • WO1998023915A1
    • 1998-06-04
    • PCT/UA1997000011
    • 1997-09-19
    • OSTAFIEV, Vladimir AleksandrovichSKITIOUK, Vladimir Ivanovich
    • G01B07/00
    • G01B7/002B23Q17/0957B23Q17/20B23Q17/22
    • A precision measurement apparatus detects the point at which a measurement probe contacts the surface of an object to be measured by detecting the formation of an electric and/or magnetic circuit as the probe approaches the object. This is achieved by making the probe of an electroconductive preferably ferromagnetical material and locating the probe and the object (which must also be metal or similar electroconductive material) as part of a magnetic circuit. The circuit includes an inductive sensor responsive to ambient electromagnetic fields and which produces an output signal which changes in response to the circuit being formed. Because the circuit is formed before actual contact is made, the apparatus can sense when the probe approaches the object and adjust its speed accordingly. In a preferred arrangement the probe may in fact be the cutting tool of a CNC machine tool.
    • 精密测量装置通过在探头接近物体时检测电路和/或磁路的形成来检测测量探针与待测物体的表面接触的点。 这是通过使导电优选为铁磁材料的探针并将探针和物体(其也必须是金属或类似的导电材料)定位为磁路的一部分来实现的。 电路包括响应于环境电磁场的感应传感器,并产生响应于正在形成的电路而改变的输出信号。 因为电路在实际接触之前形成,所以该装置可以感测探头何时接近物体并相应地调节其速度。 在优选的布置中,探头实际上可以是CNC机床的切削工具。
    • 5. 发明申请
    • POSITION DETERMINING APPARATUS
    • 位置确定装置
    • WO1990012998A1
    • 1990-11-01
    • PCT/GB1990000629
    • 1990-04-24
    • RENISHAW PLCDEER, Daniel, John
    • RENISHAW PLC
    • G01B07/00
    • G01B7/012G01B5/012G01B7/002
    • A measuring probe includes a fixed housing (2) and a movable stylus carrier (10) which is urged by a spring (18) into a rest position in a support (14). The support comprises six seating elements confronting corresponding seating elements (12) on the stylus carrier. Strain gauges (20) are provided on the seating elements of the supports (14) to measure the strain produced in the supports (14) by the movable member resting on them. Each strain gauge produces a signal from which any variation in strain, and hence any displacement of the movable member relative to the fixed member due to a change in forces between the two, can be determined by a computer.
    • 测量探头包括固定壳体(2)和可动触针托架(10),其由弹簧(18)推动到支撑件(14)中的静止位置。 支撑件包括六个座位元件,其面对触针托架上相应的座位元件(12)。 应变计(20)设置在支撑件(14)的座位元件上,以通过搁置在其上的可动构件来测量在支撑件(14)中产生的应变。 每个应变计产生信号,由计算机可以确定应变的任何变化,并且因此由于两者之间的力的变化,可动构件相对于固定构件的任何位移。
    • 6. 发明申请
    • CONTACT-SENSING PROBE
    • 联系传感探头
    • WO1986003829A1
    • 1986-07-03
    • PCT/GB1985000586
    • 1985-12-16
    • RENISHAW PLCMcMURTRY, David, Roberts
    • RENISHAW PLC
    • G01B07/00
    • G01B7/002G01B7/012
    • A contact sensing probe for use with a measuring or machine tool for measuring the dimensions of a workpiece. The probe comprises a housing (11) within which a stylus holder (15) is mounted on a kinematic support (18). A spring (21) urges the stylus holder into a rest position on the support (18) and yieldingly resists tilting or lifting of the stylus holder from the support when the stylus (16) engages a workpiece. A sensing device in the form of an accelerometer is supported within the housing on the stylus holder to sense one of the effects of stylus engagement with the workpiece, and to produce a signal which is used to stop the machine and read the co-ordinates of the instantaneous stylus position. The effects sensed in different embodiments of the invention are, sudden lifting of the stylus holder due to physical displacement of the stylus, or the shockwave produced in the stylus on contact with the workpiece. A piezo-electric pressure transducer is used as a sensitive accelerometer for measuring the shock wave in a preferred embodiment.
    • 用于测量工件尺寸的测量或机床的接触传感探头。 探针包括壳体(11),触针保持器(15)安装在运动支撑件(18)上。 弹簧(21)将触针支架推入支架(18)上的静止位置,并且当触针(16)接合工件时,能够抵抗触针支架从支架的倾斜或提升。 加速度计形式的感测装置被支撑在触针支架上的壳体内,以感测触针与工件接合的效果之一,并且产生用于停止机器并读取坐标系的坐标的信号 即时触笔位置。 在本发明的不同实施例中感测到的效果是由于触针的物理位移或触针在与工件接触时产生的冲击波而突然提升触针支架。 在优选实施例中,压电式压力传感器用作用于测量冲击波的敏感加速度计。
    • 8. 发明申请
    • METHOD FOR HIGH-ACCURACY NON-CONTACT CAPACITIVE DISPLACEMENT MEASUREMENT OF POORLY CONNECTED TARGETS
    • 非连接目标的高精度非接触电容位移测量方法
    • WO2003065062A1
    • 2003-08-07
    • PCT/US2003/002670
    • 2003-01-29
    • ADE CORPORATION
    • MALLORY, Roy, E.
    • G01R27/26
    • G01B7/002
    • A non-contact capacitive displacement measurement gage (500) that provides high accuracy displacement measurements of well-connected targets and poorly-connected targets. The capacitive displacement measurement gage (500) includes a capacitive probe (504), first and second amplifiers (540, 541), and a signal generator (510). The capacitive probe (500) includes a sensor electrode (507), a guard electrode (531), and a compensating electrode (530). The signal generator (510) provides a predetermined voltage signal. directly to the sensor electrode (507), to the guard electrode (531) through the first amplifier (540) having unity gain, and to the compensating electrode (530) through the second amplifier (541) having a predetermined transfer function. The second amplifier (541) assures that substantially zero current is driven into the target element by the probe during gage operation, thereby allowing highly accurate displacement measurements of target elements having unknown or poorly controlled impedance (508).
    • 非接触式电容式位移测量仪(500)可提供良好连接的目标和连接不良的目标的高精度位移测量。 电容位移测量计(500)包括电容式探针(504),第一和第二放大器(540,541)和信号发生器(510)。 电容式探针(500)包括传感器电极(507),保护电极(531)和补偿电极(530)。 信号发生器(510)提供预定的电压信号。 通过具有单位增益的第一放大器(540)直接连接到传感器电极(507)到保护电极(531),并通过具有预定传递函数的第二放大器(541)连接至补偿电极(530)。 第二放大器(541)确保在测量操作期间探针基本上零电流被驱动到目标元件中,从而允许具有未知或控制不良的阻抗的目标元件(508)的高度精确的位移测量。
    • 9. 发明申请
    • POSITION-SENSING APPARATUS
    • 位置感应装置
    • WO1984001621A1
    • 1984-04-26
    • PCT/GB1983000263
    • 1983-10-17
    • RENISHAW PLCMcMURTRY, David, Roberts
    • RENISHAW PLC
    • G01B07/00
    • G01B7/002B23Q1/0009G01B7/012G05B2219/37207G05B2219/50252Y10T307/786
    • A machine tool spindle (10), rotatable in a housing (11), is adapted to receive, as an alternative to a cutting tool, a probe (12) having a stylus (14) whereby to sense a workpiece (15) for the purpose of measuring it. On sensing the workpiece (15) the probe (12) generates a signal which is transmitted to a fixed location (X) on the housing (11). The probe (12) has a body (13) secured to the spindle (10) for rotation therewith, such rotation being required for certain measuring manoeuvres. To cope with the transmission of the signal (17) from the rotating probe (12) to the fixed location (X), the signal (17) is transmitted through the intermediary of a sleeve (19) supported on the probe body (13) such that the body (13) can rotate while the sleeve (19) is held still by an axially disengageable mechanical connector (21) connecting the sleeve (19) to the housing (11). The transmission of the signal (17) takes place through a rotation-accommodating first inductive coupling (28) between the probe body (13) and the sleeve (19), and by a rotationally fixed but axially disengageable second inductive coupling (30) between the sleeve (19) and the housing (11). The probe and sleeve assembly (12, 19) is connectable to and disconnectable from the spindle (10) by a transfer mechanism (24). The conector (21) and the second coupling (30) are engaged and disengaged accordingly. The assembly (12, 19) may include a duct (31) for transmission of a cleaning fluid from the housing (11) to the sensing end (14A) of the stylus (14).
    • 10. 发明申请
    • POSITION-SENSING APPARATUS
    • 位置感应装置
    • WO1984001620A1
    • 1984-04-26
    • PCT/GB1983000255
    • 1983-10-11
    • RENISHAW PLCMcMURTRY, David, Roberts
    • RENISHAW PLC
    • G01B07/00
    • G01B7/002Y10T307/786
    • A numericallly controlled machine tool has a rotatable spindle (10) to which is connected, in the place of the usual cutting tool, a probe (16) for measuring a work surface (25) to be, or having been, machined by a said tool. The probe (16) includes an electric circuit (30) adapted to respond to engagement between the probe (16) and the work surface (25), by disestablishing a signal (26) to a control system (12) and thereby effect measurement of the position of the work surface (25). The circuit (30) is energised by a battery (31) normally disconnected from the circuit (30) and connectable thereto by the control system (12) effecting a transient rotation of the spindle (10). The rotation acts a centrifugally operated normally open switch (Fig. 2) arranged within the probe (16). The circuit (30) is arranged to latch the switch in the "on" condition when the transient rotation ceases whereafter the probe (16) is ready for the probing operation. The latch is released responsive to said disestablishment of the signal (26) or by a subsequent transient rotation of the spindle (10). In this way the duration for which the battery is in use can be limited to the duration of the measuring operation and battery capacity is saved: in this way.
    • 数控机床具有可旋转的主轴(10),代替通常的切割工具,连接有用于测量待加工或加工的工作表面(25)的探头(16) 通过这样的工具。 探测器(16)包括电路(30),该电路适于通过向控制系统(12)发送信号(26)来执行探测器(16)与工作表面(25)之间的接合以响应 测量工作表面(25)的位置。 电路(30)由通常与电路(30)断开连接的电池(31)供电,并且可通过暂时旋转销(12)的控制系统(12)与电路(30)连接。 该旋转启动设置在探针(16)中的常开离心操作开关(图2)。 电路(30)布置成当暂态旋转停止时将开关锁定在“开”位置,之后探针(16)准备好操作。 响应于信号(26)或通过引脚(10)的随后的瞬时旋转来释放锁。 以这种方式,电池使用期间的时间可以限制在测量操作的持续时间,从而节省电池。