• 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:
    The present invention relates to an apparatus and method for measuring a shape error and a motion error of a measured object for measuring a shape error and a motion error of a subject to be rotated and linearly moved, According to the apparatus and method therefor, since the measurement of the workpiece to be machined is performed in a state where it is assembled in the main shaft and the stage of the machine tool, no assembly error occurs when the machine tool is mounted on the machine tool, There is an excellent effect that an error or a shape error of a measured object can be obtained.
    公开号:KR19990032787A
    申请号:KR1019970053935
    申请日:1997-10-21
    公开日:1999-05-15
    发明作者:안현식；정병철
    申请人:김덕중；사단법인 고등기술연구원 연구조합；
    IPC主号:
    专利说明:

    Apparatus and method for measuring shape error and motion error of an object to be measured
    The present invention relates to an apparatus and method for measuring a shape error and a motion error of a measured object for measuring a shape error and a motion error of a subject to be rotated and linearly moved.
    Conventionally, when measuring a machined surface of a rotating object to be measured, the object to be measured is separated from the main shaft or the stage and measured using a measuring instrument.
    However, since such a measurement method disregards the motion error of the measuring instrument to be measured, accurate measurement is not performed, and since the object to be measured is separated from the main shaft and the stage of the processing machine for measurement of the object to be processed, There is a problem that the accuracy of the measurement is deteriorated.
    SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide an apparatus and a method for measuring a shape of an object to be measured which can accurately measure a shape error and a motion error of the object, An error and a motion error measuring device and a method thereof.
    According to an aspect of the present invention, there is provided an apparatus for measuring a shape error and a motion error of an object to be measured, the apparatus comprising: A signal amplification unit for amplifying a signal received from the sensor unit to a predetermined level, and an A / D conversion unit for receiving an analog signal from the signal amplification unit and converting the analog signal into a digital signal, A microcomputer for receiving a sensing signal from the A / D converter and calculating a shape error and a motion error according to a predetermined algorithm, and outputting a corresponding control signal; and a display unit for receiving a control signal from the microcomputer and displaying a measurement value And a display unit.
    In addition, the shape error and the control method for the motion error measuring device configured as described above include a first step of receiving sensed data from the A and B sensors and storing the sensed data, and the first step of determining whether a predetermined time has elapsed A third step of calculating a shape error and a motion error of the measured object by calculating the data stored in the first step according to a predetermined equation when a certain time set in the second step has elapsed, And a fourth step of displaying a shape error and a motion error of the measured object calculated in the third step on a display unit.
    FIG. 1A is a perspective view illustrating a sensor unit of a device for measuring a shape error and a motion error of an object to be measured according to an embodiment of the present invention,
    1B is a cross-sectional view taken along the line A-A 'in FIG. 1A,
    2 is a control block diagram of an apparatus for measuring a shape error and a motion error of an object to be measured according to an embodiment of the present invention.
    3 is a flowchart illustrating a method of controlling a shape error and a motion error measuring device of an object to be measured according to an embodiment of the present invention.
    Description of the Related Art
    100: sensor unit 110: A sensor
    120: B-sensor 200:
    300: A / D conversion unit 400: Microcomputer
    500:
    Hereinafter, an apparatus and method for measuring a shape error and a motion error of an object to be measured according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
    1A is a perspective view showing a sensor unit of a device for measuring a shape error and a motion error of an object to be measured according to an embodiment of the present invention, FIG. 2 is a control block diagram of an apparatus for measuring a shape error and a motion error of an object to be measured according to an embodiment of the present invention. The shape error and the motion error measurement The apparatus includes a sensor unit 100, a signal amplification unit 200, an A / D conversion unit 300, a microcomputer 400, and a display unit 500.
    The sensor unit 100 is a sensor for measuring the distance from the front surface of the object S to be rotated mounted on the processing machine and includes an A sensor 110 installed on the same measurement trajectory on the front surface of the object S, And a B sensor 120. The machine includes a main shaft housing 10, a main shaft 15 installed in the main shaft housing 10 and rotated by a rotating device not shown, And a spindle spindle 20 coupled to rotate the spindle to fix the workpiece S to be processed.
    The signal amplifying unit 200 receives a sensing signal from the sensor unit 100 and amplifies the signal to a predetermined level for input to the A / D converting unit 300. The A / The microcomputer 400 is a microcomputer for controlling the entire system. The microcomputer 400 includes a CPU, a memory, And calculates a shape error and a motion error of the object S to be rotated by a predetermined algorithm in response to a sensing signal from the A / D converter 300, And outputs a corresponding control signal.
    The display unit 500 receives a control signal output from the microcomputer 400 and displays a shape error and a motion error.
    The shape error of the object to be measured and the control method for the motion error measuring apparatus constructed as above will be described with reference to the following drawings.
    FIG. 3 is a flowchart showing a control method for a shape error and motion error measuring apparatus of an object according to an embodiment of the present invention, wherein S represents a step (STEP).
    First, in step S1, when the microcomputer 400 receives detection data on the distances between the respective sensors sensed by the A and B sensors 110 and 120 and the front surface of the object S, in step S2, The sensing data input from the A and B sensors 110 and 120 is stored in the memory 400. In step S3, it is determined whether or not the arbitrary time set in the microcomputer 400 has passed.
    If it is determined in step S3 that the arbitrary time has not elapsed (NO), the process proceeds to step S1. On the other hand, if the arbitrary time elapses in step S3 (YES) Lt; / RTI >
    In step S4, the microcomputer 400 calculates the shape error f and the motion error m of the measured object S based on the sensed data stored in step S2.
    When the distance between the A and B sensors 110 and 120 is significantly smaller than the circumferential length of the A and B sensors 110 and 120 on the front surface of the object S, the measured values of the two sensors include the same motion error And the difference between the measured values of the two sensors measured at the same time becomes a shape error (Δf n = B n -A n) generated during the rotation of the front surface of the measured object S by the sensor interval.
    Then, when the position measured by the first sensor comes to the measurement position of the next sensor, the difference between the two sensor values becomes the motion error (Δm n = A n -B n-1 ) generated during that time.
    The shape error f and the motion error m of the measured object S can be obtained by integrating the shape error f n and the motion error m n .
    The shape error f and the motion error m of the measured object S are calculated by the following equations (1, 2, 3).
    F 0 = B 0 -A 0
    F 1 = B 1 -A 1
    Δf 2 = B 2 -A 2
    .
    .
    F n = B n -A n
    M 0 = A 1 -B 0
    M 1 = A 2 -B 1
    M 2 = A 3 -B 2
    .
    .
    M n = A n -B n-1
    Subsequently, in step S5, the microcomputer 400 outputs a control signal to the display unit 500 to calculate a shape error f and a motion error m of the measured object S calculated in step S4 Display and exit.
    In the above example, the sensor unit 100 is installed at a position a certain distance from the front surface of the measurement object S to measure the shape error and the motion error of the front surface of the measurement object. However, 100 can be provided at a position distant from the outer diameter of the object S to measure the shape error such as the roundness of the object S. [
    The same method can be applied to not only the rotating body but also the linear motion.
    As described above, according to the apparatus and method for measuring the shape error and the motion error of the object to be measured according to the present invention, the measurement of the object to be processed is performed while assembled in the main shaft and the stage of the processing machine. Accurate measurement can be performed because no assembly error occurs, and various motion errors or shape errors of the object to be measured can be obtained.
    权利要求:
    Claims (4)
    [1" claim-type="Currently amended] A sensor unit including two sensors disposed on the same measurement trajectory of the front surface of the object to measure a distance from the surface of the object to be rotated; An A / D converter for receiving an analog signal from the signal amplifier and converting the received analog signal into a digital signal; and a controller for receiving the sensing signal from the A / D converter and calculating a shape error and a motion error according to a predetermined algorithm And a display unit for receiving a control signal from the microcomputer and displaying a measurement value. The apparatus of claim 1,
    [2" claim-type="Currently amended] The apparatus according to claim 1, wherein the sensor unit can be installed at a distance from the outer diameter of the object to measure the shape error such as the roundness of the object to be measured. .
    [3" claim-type="Currently amended] A first step of receiving sensed data from sensors A and B and storing the sensed data, a second step of determining whether or not a predetermined time has elapsed, and a step of, when an arbitrary time set in the second step has elapsed A third step of calculating the shape error and the motion error of the measured object by calculating the data stored in the first step according to a predetermined mathematical expression, and displaying the shape error and the motion error of the measured object calculated in the third step on the display unit The method comprising the steps of: (a) measuring a position error of the object to be measured;
    [4" claim-type="Currently amended] 4. The method according to claim 3, wherein if the arbitrary time does not elapse in the second step, the process proceeds to the first step.
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    同族专利:
    公开号 | 公开日
    KR100245986B1|2000-04-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1997-10-21|Application filed by 김덕중, 사단법인 고등기술연구원 연구조합
    1997-10-21|Priority to KR1019970053935A
    1999-05-15|Publication of KR19990032787A
    2000-04-01|Application granted
    2000-04-01|Publication of KR100245986B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019970053935A|KR100245986B1|1997-10-21|1997-10-21|Form and motion error device and method|
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