JP2019100767A - measuring device - Google Patents

Abstract

To provide a measuring device that can quickly and easily execute a measurement for specifying a portion to be processed, which is performed after a measurement for grasping the entire shape of an inspection target section.SOLUTION: A measuring device comprises: detection means 130 that detects the amount of displacement of a probe in a process in which the probe slides through an inspection target section of an object to be measured in a certain direction; storage means 150; data collection means 140 that acquires the displacement amount detected by the detection means at a predetermined period and sequentially stores the displacement amount in the storage means; display means 161 that can perform graphic display; and display control means 160 that controls the display means to display a graph indicating the positional transition of the displacement amount in the inspection target section. The storage means stores in advance a displacement amount for every predetermined period in a first measurement that was performed beforehand; the display control means controls the display means to display a graph related to the first measurement during a second measurement in the inspection target section, and searches, in the graph, for a position in the inspection target section having the same displacement amount as the displacement amount acquired in the second measurement and controls the display means to display the position.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a measuring device capable of storing measurement data.

  A dial gauge is known as one of measurement devices for performing comparison measurement. A dial gauge generally measures the displacement of linear movement of a spindle provided with a probe at its tip, but some measure the displacement of the swing of a lever-like probe (lever type Dial gauge).

  The dial gauge can be classified according to the display format of the measurement result in addition to the classification method as described above. Specifically, there are a pointer-type dial gauge that displays a displacement amount by a rotation angle of a pointer, and a digital-type dial gauge that digitally displays a displacement amount (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 10-103901

  When the conventional dial gauge is used for grasping the shape of the object to be measured, such as roundness, flatness and straightness, the user slides the probe in the relatively constant direction on the surface of the object to be measured, The shape can be grasped by reading the change of the displacement amount in the movement process in detail.

  When it is desired to process the shape of a specific part in the section after the overall shape of the section to be inspected in the object to be inspected is grasped by the first measurement, the section in order to specify the part to be processed Although it is necessary to perform measurement again, the amount of displacement displayed on the device at the time of measurement changes successively by sliding the probe. Therefore, if you try to search for the part you want to process in the second measurement, relying only on the amount of displacement of the peak and the bottom that were grasped in advance in the first measurement that grasps the entire shape of the section to be inspected While sliding, it is necessary to carefully search for the displacement amount that changes sequentially, which is time-consuming and requires technology.

  An object of the present invention is to provide a measuring device capable of quickly and easily performing measurement for identifying a portion to be processed after grasping the entire shape of a section to be inspected.

  The measuring device of the present invention detects the displacement amount of the measuring element in the process in which the measuring element slides relative to the measuring element in contact with the object to be measured and the inspection target section of the object to be measured in a relatively constant direction. Means, storage means, data collection means for acquiring the displacement amount detected by the detection means at a predetermined cycle and sequentially storing the information in the storage means, display means capable of graphic display, position of displacement amount in the section to be inspected Display control means for causing the display means to display a graph indicating the dynamic transition, and the storage means stores in advance the displacement amount for each predetermined cycle in the first measurement performed in advance in the inspection target section, and displays The control means causes the display means to display the graph related to the first measurement with reference to the storage means when performing the second measurement in the inspection target section, and the graph acquired in the second measurement in the graph Strange The amount search and display means the position of the test object in a section that has the same displacement as the display in a predetermined manner to.

  Specifically, for example, when the end point of the first measurement is the starting point of the second measurement, the display control means checks the inspection target each time the displacement amount in the second measurement is acquired for each predetermined cycle. The position in the section is searched from the position specified in the previous cycle as the starting point toward the starting point of the first measurement in the graph and displayed, and the starting point of the first measurement is the starting point of the second measurement Every time the displacement amount in the second measurement is acquired for each predetermined cycle, the position in the section to be inspected starts from the position specified in the previous cycle as the start point toward the end point of the first measurement in the graph. You may search and display.

  Thereby, after performing the first measurement for grasping the entire shape of the section to be inspected, when performing the second measurement for specifying the portion to be processed, the graph showing the entire shape is displayed. Since the current position of the measuring element in the second measurement is sequentially displayed, it is possible to quickly and easily identify the position where the displacement amount is peak or bottom while referring to the unevenness of the graph.

  The present invention is preferably applied to, for example, a spindle dial gauge or a lever dial gauge.

FIG. 2 is a view showing an example of the appearance of the measuring apparatus 100. It is a figure which shows an example of an internal structure of main body case. It is a figure (1/2) explaining a concrete example of an embodiment. It is a figure (2/2) explaining the specific example of embodiment. It is a figure which shows the variation of the display mode of a present position.

  Hereinafter, an embodiment of a measuring device of the present invention will be described. In the following description, the case where the measuring device is a spindle type dial gauge will be described as an example, but any device that measures the displacement of the measuring element in the process of moving the measuring element on the surface of the object to be measured It is possible. For example, a dial gauge of other types such as a lever type may be used, or a measuring device other than the dial gauge may be used.

  FIG. 1 shows an example of the appearance of the measuring apparatus 100 of the present invention, and FIG. 2 shows an example of the internal configuration of the main body case 110. As shown in FIG. The measuring apparatus 100 includes a main body case 110, a spindle 120, a probe 121, a detection unit 130, a data collection unit 140, a storage unit 150, a display control unit 160, and a display unit 161.

  The spindle 120 is provided on the main body case 110 so as to be axially displaceable. At the tip of the spindle 120, a probe 121 is provided which abuts against the workpiece W at the time of measurement, and the displacement of the probe 121 due to the unevenness of the workpiece W is reflected in the displacement of the spindle 120.

  The detection means 130 detects the amount of displacement of the spindle 120 in the process in which the probe 121 slides in a relatively constant direction relative to the inspection target section of the object to be measured W. The displacement amount may be detected by any method such as a photoelectric method, a capacitance method, or an electromagnetic method as long as the method can output a displacement amount as an electric signal.

  The data collection means 140 acquires the amount of displacement detected by the detection means 130 in a predetermined cycle, and sequentially stores the amount in any storage means 150.

  In addition, in the storage unit 150, measurement data of the displacement amount for each predetermined cycle in the first measurement performed in advance to grasp the entire shape of the inspection target section is stored in advance.

  The display control means 160 refers to the storage means 150 when performing the second measurement in the inspection target section, and graphically displays a graph indicating the positional transition of the displacement amount in the inspection target section according to the first measurement. It is displayed on the possible display means 161. Further, in the graph, the position in the measurement path having the same displacement as the displacement obtained in the second measurement is retrieved and displayed on the display means 161 in a predetermined manner.

  For example, when the end point of the first measurement is the starting point of the second measurement, every time the displacement amount in the second measurement is acquired for each predetermined cycle, the position in the section to be inspected is set to the previous cycle. Starting from the identified position, it is searched toward the starting point of the first measurement in the graph and displayed in a predetermined manner. In addition, when the starting point of the first measurement is the starting point of the second measurement, every time the displacement amount in the second measurement is acquired for each predetermined cycle, the position in the section to be inspected is specified as the previous cycle. Starting from the detected position, it is searched toward the end point of the first measurement in the graph and displayed in a predetermined manner.

  The position specified by the search is the current position of the tracing stylus 121 in the measurement path. As long as this current position can be read in the graph displayed on the display means 161, it may be displayed in any display mode.

  The function of the display control unit 160 can be realized, for example, by having the CPU in the measuring apparatus 100 and causing the CPU to execute a program in which the function of the display control unit 160 is described. In this case, advanced processing and analysis can be performed according to the description content of the program, and can be reflected on the display on the display means 161.

  Specific examples of the embodiment will be described with reference to FIGS. 3, 4 and 5. First, as shown in FIG. 3A, the measuring element 121 of the measuring apparatus 100 is slid on the object W in a fixed direction (from left to right in the drawing), and the measuring element in the inspection target section A first measurement is performed to acquire the displacement amount 121 at predetermined intervals by the data collection unit 140, and the measurement data is stored in the storage unit 150.

  The display control means 160 refers to the storage means 150 and causes the display means 161 to display a graph showing the positional transition of the displacement amount as shown in FIG. 3B, for example. In the graph of FIG. 3B, the vertical axis indicates the displacement amount, the horizontal axis indicates the position, the measurement start point is the left end, and the end point is the right end.

  Subsequently, in a state where the graph relating to the first measurement is displayed, as shown in FIG. 4A, the measuring element 121 of the measuring apparatus 100 is moved from the end point of the first measurement in the inspection target section toward the starting point. Sliding is performed, and a second measurement is performed in which the amount of displacement of the measurement element 121 is acquired by the data collection unit 140 at predetermined intervals. At this time, the display control means 160 searches the position in the section to be inspected toward the left end of the graph starting from the position specified in the previous cycle every time the displacement amount is acquired for each predetermined cycle, and performs predetermined Display the form. FIG. 4B shows an example of an aspect in which the searched position is indicated by an arrow on the graph. The arrows may be indicated only by the arrows, or as shown in FIG. 4 (b), may be shown together with the displacement amount at that position.

  Regarding the display mode of the current position, for example, in the mode shown by vertical lines as shown in FIG. 5 (a) or in the first measurement as shown in FIG. 5 (b), other than the mode shown in FIG. The aspect etc. which show the graph which concerns in the form which trace a 2nd measurement result with the line which changed the thick line or the color, etc. are mentioned.

  The present invention is not limited to the above embodiment. Each embodiment is an exemplification, which has substantially the same configuration as the technical idea described in the claims of the present invention, and exhibits the same function and effect as the present invention. It is included in the technical scope of That is, changes can be made as appropriate within the scope of the technical idea expressed in the present invention, and a form added with such changes and improvements is also included in the technical scope of the present invention.

100 Measurement device 110 Body case 120 Spindle 121 Probe 130 Detection device 140 Data collection device 150 Storage device 160 Display control device 161 Display device W Measurement object

Claims (3)

A probe that contacts the object to be measured;
Detection means for detecting a displacement amount of the measuring element in a process in which the measuring element relatively slides in a fixed direction in the inspection target section of the object to be inspected;
Storage means,
Data collection means for acquiring the displacement amount detected by the detection means at a predetermined cycle and sequentially storing the same in the storage means;
Display means capable of graphic display;
Display control means for causing the display means to display a graph indicating a positional transition of the displacement amount in the inspection target section;
Equipped with
The storage means stores in advance the displacement amount for each predetermined cycle in the first measurement performed in advance in the inspection target section,
The display control means refers to the storage means when performing the second measurement in the inspection target section, and causes the display means to display the graph relating to the first measurement, and the graph in the graph. A measuring apparatus characterized by retrieving a position in the inspection target section having the same displacement amount as the displacement amount acquired in the second measurement and displaying the position on the display means in a predetermined mode. If the end point of the first measurement is the starting point of the second measurement, the display control unit may check the section to be inspected each time the displacement amount in the second measurement is acquired for each predetermined cycle. Starting from the position specified in the previous cycle toward the first measurement starting point in the graph and displaying the position in the second period, the first measurement starting point being the second measurement starting point In some cases, each time the displacement amount in the second measurement is acquired for each predetermined cycle, the position in the inspection target section is set to the first position in the graph starting from the position identified in the previous cycle. The measuring apparatus according to claim 1, wherein the measuring apparatus is searched and displayed toward the end point of the measurement. The measuring device according to claim 1 or 2, wherein the measuring device is a spindle type dial gauge or a lever type dial gauge.

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