JP2015172526A - Shape measuring machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shape measuring machine that enables a user to quickly check the type of malfunction of the shape measuring machine.SOLUTION: A shape measuring machine 100 includes a detector 30 that contacts a measurement target object, error detection means for detecting an error in the shape measuring machine 100, and a display part 110 that displays an error code of the error detected by the error detection means. A user can quickly check the type of malfunction of the shape measuring machine 100 without the need of connecting the shape measuring machine 100 to a computer or removing a housing 20.

Description

  The present invention relates to a shape measuring machine.

  The shape measuring machine moves the stylus provided at the tip of the measuring arm while making contact with the surface of the object to be measured, and the contour shape, surface roughness, roundness of the object to be measured from the amount of movement of the measuring arm at that time Measure the surface shape. For example, Patent Document 1 discloses a surface texture measuring instrument that can perform accurate measurement even when the tilt angle of a measurement arm is changed. Some of such surface texture measuring machines use a level meter to notify the position of the measurement arm.

  The level meter has been applied to various devices conventionally. For example, Patent Document 2 includes a plurality of unit display means, and the volume value of MIDI (Musical Instrument Digital Interface) data is displayed in a bar graph level meter display. A display device is disclosed that includes level meter display means for displaying and display control means for performing display control in the level meter display means. In the display device disclosed in Patent Document 2, the display control means performs display control for blinking a specific unit display means in the level meter display means when an error state is detected, and the level meter is notified of the error notification means. It is also used as.

JP2013-113715A Japanese Patent No. 3685010

  In addition to the surface texture measuring device disclosed in Patent Document 1, various shape measuring devices are known. However, in order to investigate whether a conventional shape measuring machine has a defect, the shape measuring machine is connected to a computer having a diagnostic function or a board housed in the case of the shape measuring machine is used. The case had to be removed to confirm. Moreover, if it is a shape measuring machine using a level meter, like patent document 2, using a level meter as an error alerting | reporting means can also be considered. However, the display device disclosed in Patent Document 2 can display that an error state has been detected, but cannot display what error state has been detected.

  An object of this invention is to provide the shape measuring machine which can confirm rapidly what kind of malfunction exists.

  A shape measuring machine according to a first aspect of the present invention includes a detector that contacts an object to be measured, error detection means for detecting an error in the shape measuring machine, and a display unit that displays an error code of the error. .

  It is preferable that the shape measuring machine further includes display control means for switching between a function of displaying the position of the detector and a function of the display unit displaying the error code.

  The display unit may include a plurality of light emitters arranged in a line. In this case, when the display unit displays the position of the detector, a light emitter at a position corresponding to the position of the detector among the plurality of light emitters emits light. The plurality of light emitters include a plurality of first light emitters that emit light in a light emission pattern corresponding to the error code when the display unit displays the error code. The light emission pattern designates light emission or non-light emission for each of the plurality of first light emitters.

  The plurality of light emitters may further include two second light emitters. The plurality of first light emitters are disposed between the two second light emitters. When the display unit displays the error code, the plurality of first light emitters emit light in a first color, and the two second light emitters emit light in a second color different from the first color. It is preferable.

  Preferably, the error detection means detects the error by performing a self-diagnosis at the time of power activation.

  The shape measuring machine may further include a plurality of operation buttons. It is preferable that the display unit displays the error code when predetermined two of the plurality of operation buttons are simultaneously pressed.

  The shape measuring machine according to the second aspect of the present invention includes a display unit that displays an error code.

  ADVANTAGE OF THE INVENTION According to this invention, the shape measuring machine which can confirm rapidly what kind of malfunction exists is provided.

It is a front view which shows the measurement operation state of the shape measuring machine concerning Embodiment 1. FIG. It is a figure which shows the internal mechanism of the shape measuring machine concerning Embodiment 1. FIG. 1 is a block diagram of a self-diagnosis system for a shape measuring machine according to a first embodiment; It is a front view which shows the self-diagnosis result display state of the shape measuring machine concerning Embodiment 1. FIG. It is a front view of the shape measuring machine concerning a modification.

Embodiment 1
Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a measurement operation state of the shape measuring instrument 100 according to the first embodiment. An X direction, a Y direction, and a Z direction that are orthogonal to each other are defined for the shape measuring instrument 100. Hereinafter, although the case where the Z direction is parallel to the vertical direction will be described, the Z direction is not limited to the vertical direction. The shape measuring instrument 100 includes a housing 20, a detector 30, a power button 40, a plurality of operation buttons 50, a display unit 110, and a display unit 111.

  The detector 30 includes a measurement arm 31 partially protruding from the housing 20 and a stylus 32 provided at the tip of the measurement arm 31. The power button 40, the plurality of operation buttons 50, the display unit 110, and the display unit 111 are provided on the front surface of the housing 20. The display unit 110 includes light emitters 1 to 11 arranged in a line. The light emitters 1 to 11 are, for example, light emitting diodes (LEDs). The light emitters 1 to 11 are arranged in parallel to the Z direction, and are located higher as the numerical value of the code is larger. For example, since the numerical value “2” of the sign of the light emitter 2 is larger than the numerical value “1” of the light emitter 1, the light emitter 2 is located above the light emitter 1. The display unit 111 includes a plurality of light emitters arranged in a line. The plurality of light emitters of the display unit 111 are arranged in parallel to the X direction.

  The shape measuring machine 100 moves the stylus 32 provided at the tip of the measurement arm 31 while making contact with the surface of the object to be measured (not shown), and the contour shape of the object to be measured based on the amount of movement of the measurement arm 31 at that time. Measure etc. In the measurement operation state, the display unit 110 functions as a level meter that displays the position of the stylus 32 in the peristaltic direction. Among the light emitters 1 to 11, only one light emitter at a position corresponding to the position of the stylus 32 in the swing direction emits light. For example, when the stylus 32 moves upward from the position where the light emitter 6 emits light, the light emitter 6 is turned off, and any one of the light emitters 7 to 11 above the light emitter 6 emits light. Here, the light emission of the light emitters 1 to 11 may be continuous lighting or blinking. The display unit 111 functions as a level meter that displays the position of the stylus 32 in the X direction.

  With reference to FIG. 2, the internal mechanism accommodated in the housing | casing 20 is demonstrated. The shape measuring machine 100 includes an X direction driving mechanism 60, an X slider 70, an X direction position detector 80, limit sensors 81 to 84, a peristaltic direction position detector 85, a measurement posture / measurement force control mechanism 95, Is provided. The X slider 70 is a detector support portion that supports the measurement arm 31 so that the detector 30 can swing around a swing shaft 71 parallel to the Y direction. The X direction drive mechanism 60 drives the X slider 70 along a straight line parallel to the X direction. Specifically, the X-direction drive mechanism 60 includes a motor 61, a feed screw 62, and a guide rail 63. The feed screw 62 and the guide rail 63 are provided in parallel to the X direction. The X slider 70 is screwed with the feed screw 62. When the motor 61 drives the feed screw 62, the X slider 70 is guided by the guide rail 63 and moves parallel to the X direction. The measurement posture / measurement force control mechanism 95 controls the swinging posture (measurement posture) of the measurement arm 31 at the time of measurement and the force (measurement force) by which the stylus 32 is pressed against the object to be measured at the time of measurement. The measurement posture / measurement force control mechanism 95 includes a cylindrical magnet 96 provided on the measurement arm 31 and a voice coil 97 disposed in the magnet 96.

  The X direction position detector 80 detects the X direction position of the X slider 70. The peristaltic direction position detector 85 detects the peristaltic direction position of the measurement arm 31. The peristaltic direction position detector 85 may be referred to as a detector scale. In the measurement operation state, the display unit 110 displays the position of the stylus 32 in the swing direction based on the output of the swing direction position detector 85, and the display unit 111 displays the direction of the stylus 32 in the X direction based on the output of the X direction position detector 80. Display position. The limit sensors 81 and 82 are provided at both ends of the movable range of the X slider 70, respectively. The limit sensors 83 and 84 are supported by the X slider 70 and are respectively provided at both ends of the swingable range of the measurement arm 31.

  FIG. 3 shows a self-diagnosis system that performs self-diagnosis of the shape measuring machine 100 and displays the result of the self-diagnosis. The self-diagnosis system includes a power button 40, a plurality of operation buttons 50, a self-diagnosis unit 90A, a display control unit 90B, an X-direction position detector 80, a peristaltic direction position detector 85, and an X-direction drive mechanism 60. A measuring posture / measuring force control mechanism 95, limit switches 81 to 84, a power source 99 of the shape measuring machine 100, and a display unit 110. The plurality of operation buttons 50 include a measurement start button, a stop button 51, a return button 52, and the like. The self-diagnosis unit 90 </ b> A and the display control unit 90 </ b> B may be realized by the control unit 90 being a processing device of the shape measuring machine 100 executing a firmware program, or may be realized as a dedicated circuit.

  The self-diagnosis unit 90A performs self-diagnosis of the shape measuring machine 100 when the power is turned on, and causes the display unit 110 to display the self-diagnosis result. Specifically, when the power button 40 is pressed, the self-diagnosis unit 90A causes the X-direction position detector 80, the peristaltic direction position detector 85, the X-direction drive mechanism 60, the measurement posture / measurement force control mechanism 95, the limit. The components of the shape measuring machine 100 such as the switches 81 to 84 and the power source 99 are diagnosed. When the self-diagnosis unit 90A detects an error as a result of diagnosis, the self-diagnosis unit 90A displays an error code of the error on the display unit 110. The display control unit 90B switches between a function in which the display unit 110 displays the position of the stylus 32 in the peristaltic direction and a function in which an error code is displayed.

  The self-diagnosis unit 90A stores an error detected by the diagnosis performed at the time of power activation, and two or more predetermined buttons (for example, a stop button 51 and a return button 52) among the plurality of operation buttons 50. ) May be pressed simultaneously, the error code of the error may be displayed on the display unit 110. The self-diagnosis unit 90A performs a diagnosis again when two or more predetermined buttons among the plurality of operation buttons 50 are simultaneously pressed, and causes the display unit 110 to display an error code of an error detected as a result of the diagnosis. Good. Alternatively, when two or more predetermined buttons among the plurality of operation buttons 50 are pressed at the same time, the display unit 110 causes an error that occurs after diagnosis at power-on (for example, an accidental error or an error caused by a device malfunction). May be displayed.

  The error is, for example, an overspeed error of the X direction position detector 80, an overspeed error of the peristaltic direction position detector 85, or the like. An overspeed error occurs when dirt adheres to the scales of the X direction position detector 80 and the peristaltic direction position detector 85. When both the limit sensors 81 and 82 detect the X slider 70, when both the limit sensors 83 and 84 detect the measurement arm 31, a movement command is sent to the X direction drive mechanism 60, but the X direction position is detected. If the detector 80 does not detect the movement of the X slider 70, it sends a movement command to the X direction drive mechanism 60, but if the limit sensor 81 or 82 continues to detect the X slider 70, the measurement posture / measurement force control mechanism 95 performs the measurement. Even when the arm 31 is driven and the peristaltic direction position detector 85 does not detect peristalsis of the measuring arm 31, it is also detected as an error. In addition, power supply voltage abnormality and internal memory abnormality are detected as errors. The power supply voltage abnormality is a case where the input voltage value obtained by A / D converting the power supply voltage is not within the specified range. The internal memory abnormality is a case where the write / read compare of the internal memory (not shown) is NG. Different error codes are assigned in advance according to the types of errors.

  A display example of the self-diagnosis result by the display unit 110 will be described with reference to FIG. The light emitters 1 and 11 simultaneously emit light in red to notify the user that an error code is being displayed. The light emitters 2 to 9 emit light with a light emission pattern associated with the error code. The light emission pattern designates light emission or non-light emission for each of the light emitters 2 to 9. For example, when the self-diagnosis unit 90A detects that an overspeed error has occurred in the peristaltic direction position detector 85, the light emitters 2 to 9 display the error code “12 (HEX)” of the error by a light emission pattern. To do. Specifically, the light emitters 2, 4, 5, 7 to 9 do not emit light, and the light emitters 3 and 6 emit green light. Since the error code is expressed by HEX (hexadecimal number) using eight light emitters 2 to 9, 256 patterns of errors can be displayed. The colors of the light emitters 1 and 11 and the colors of the light emitters 2 to 9 need only be different from each other, and are not limited to the colors described above.

  According to the present embodiment, a shape measuring machine 100 including a display unit 110 that displays an error code is provided. Therefore, it is possible to quickly confirm what kind of trouble the shape measuring machine 100 has without connecting the shape measuring machine 100 to the computer or removing the housing 20. The location where the error occurred can be quickly identified by the error code, and repair can be performed efficiently.

  Further, since the error code is displayed on the display unit 110 for displaying the position of the stylus 32 in the swing direction, there is no need to separately provide a display unit for displaying the error code.

  Further, by causing the light emitters 1 and 11 to emit light, the user can be notified that the error code is being displayed.

  An error code may be displayed on the display unit 111 for displaying the position of the stylus 32 in the X direction. The user may be informed that the error code is being displayed by causing the light emitters at both ends of the display unit 111 to emit light.

  By performing self-diagnosis when the shape measuring machine 100 is powered on, it is possible to prevent the measurement from being started even though the shape measuring machine 100 has a problem. If the self-diagnosis is performed before product shipment, it is possible to prevent defective products from being shipped.

  By displaying an error code when two or more predetermined buttons (for example, the stop button 51 and the return button 52) of the plurality of operation buttons 50 are pressed at the same time, it is possible to check an error at any time, not only when the power is turned on. it can. In addition, since it is not necessary to provide a dedicated operation button for instructing error code display, the present invention can be easily applied to a conventional general shape measuring machine.

  Note that the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention. The display unit 110 or 111 may display an error code of an error detected during measurement. The number of light emitters that display error codes is not limited to eight.

  FIG. 5 shows a shape measuring machine 200 including a dedicated display unit 112 for displaying an error code. The shape measuring machine 200 is configured in the same manner as the shape measuring machine 100 according to the first embodiment except that the error code is displayed on the display unit 112. The display unit 112 can display any numerical value from 0 to 99, and can display a two-digit error code. In the above description, the shape measuring machine that measures the contour shape has been described as an example. However, the present invention can be applied to a shape measuring machine that measures surface roughness and roundness.

DESCRIPTION OF SYMBOLS 1-11 ... Light emitter, 20 ... Housing, 30 ... Detector, 31 ... Measuring arm, 32 ... Stylus, 40 ... Power button, 50 ... Operation button, 51 ... Stop button, 52 ... Return button, 60 ... X direction Drive mechanism, 61 ... motor, 62 ... feed screw, 63 ... guide rail, 70 ... X slider, 71 ... peristaltic shaft, 80 ... X-direction position detector, 81-84 ... limit sensor, 85 ... peristal direction position detector, DESCRIPTION OF SYMBOLS 90 ... Control part, 90A ... Self-diagnosis part, 90B ... Display control part, 95 ... Measurement attitude | position / measurement force control mechanism, 96 ... Magnet, 97 ... Voice coil, 99 ... Power supply, 110-112 ... Display part, 100, 200 …Shape measuring instruments

Claims (7)

A shape measuring machine having a detector that contacts the object to be measured,
Error detection means for detecting an error in the shape measuring machine;
A shape measuring machine comprising: a display unit that displays an error code of the error. The shape measuring machine according to claim 1, further comprising display control means for switching the function of the display unit to display the position of the detector and the function of displaying the error code. The display unit includes a plurality of light emitters arranged in a line,
When the display unit displays the position of the detector, among the plurality of light emitters, a light emitter at a position corresponding to the position of the detector emits light,
The plurality of light emitters include a plurality of first light emitters that emit light in a light emission pattern corresponding to the error code when the display unit displays the error code,
The shape measuring machine according to claim 2, wherein the light emission pattern designates light emission or non-light emission for each of the plurality of first light emitters. The plurality of light emitters further includes two second light emitters,
The plurality of first light emitters are disposed between the two second light emitters,
When the display unit displays the error code, the plurality of first light emitters emit light in a first color, and the two second light emitters emit light in a second color different from the first color. The shape measuring machine according to claim 3. The shape measuring machine according to any one of claims 1 to 4, wherein the error detection unit detects the error by performing a self-diagnosis at power-on. Further provided with a plurality of operation buttons,
The shape measuring machine according to claim 1, wherein the display unit displays the error code when predetermined two of the plurality of operation buttons are simultaneously pressed.   A shape measuring machine with a display that displays error codes.

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