JP3499435B2 - Material testing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material testing machine provided with a graph display means for displaying, as a graph diagram, measured data of a test piece to which a predetermined load is applied, the measurement data including, for example, load and displacement.

[0002]

2. Related Background Art Generally, a material testing machine has a testing machine body 10 for applying a load such as a load or a displacement to a specimen and an operation of the testing machine body 10 as shown in the schematic configuration of FIG. A dynamometer 20 for controlling the load and displacement of the specimen under load, and a control command for the dynamometer 20 and the load and displacement detected by the dynamometer 20. And a data processing device 30 for obtaining the material properties of the specimen according to the measurement data.

Specifically, the tester main body 10 is a test piece such as a metal material piece mounted on a pair of chucks (not shown).
A load device 11 such as a hydraulic cylinder is used to apply a compressive load, a tensile load, or a load consisting of a compressive displacement and a tensile displacement. Incidentally, not only compression and tension but also load such as bending and strain may be applied. Then dynamometer 2
0 is provided with a control unit 21 for controlling the operation of the load device 11 and the like of the test machine body 10 and the test machine body 10
It is configured by including a measuring unit 22 for measuring the load, the displacement, and the like applied to the sample through a load meter (load cell) 12, a displacement meter (extension meter) 13, and the like incorporated in the above.

On the other hand, the data processing device 30 is
For example, it is composed mainly of personal computers,
The measurement data including the load and displacement detected by the dynamometer 20 is taken in at a predetermined cycle, and the data is processed. The load / elongation characteristics and stress / strain characteristics of the test piece, and further the material characteristics such as strength thereof are required by the data processing device 30. Further, the data processing device 30 gives commands such as test conditions for the specimen and control conditions for the tester body 10 to give a command to the dynamometer 20.
May control the operation of.

Particularly, in this data processing device 30, the measured data obtained as described above using a display (not shown) provided in the data processing device 30 is graphed as load / elongation characteristics and stress / strain characteristics. A graph display function 31 for displaying the converted data is provided. Incidentally, in the graph display by the graph display function 31, as shown in the concept of FIG. 6, for example, each variable parameter of the X axis and the Y axis is set under the graph display condition set as one item regarding the test condition. Set the display scale of each axis,
This is done by plotting the measurement data on the XY plane (two-dimensional plane). For example, by plotting the displacement (elongation) amount and the load value given as the measurement data with the X-axis as the displacement (elongation) and the Y-axis as the load, and drawing the graph diagram specified by the measurement data. Done.

[0006]

By the way, the material test of the specimen is generally carried out on a lot basis as a group of a plurality of specimens, and the test conditions are set for each lot. The material properties are evaluated by mutually comparing the measurement data of each sample in the above-mentioned lot and further statistically processing each measurement data. At this time, the measurement data of a plurality of specimens are made into a graph by using the above-mentioned graph display function 31, and the graphs are displayed in an overlapping manner on the same screen to make the comparison.

Specifically, using a graph display screen as shown in FIG. 7, each measured data of a plurality of (for example, two) specimens is graphed in a graph display area in which the scale is set as described above. The graphs are displayed by superimposing as, and their characteristics are compared and evaluated. However, since the measurement data of the specimens belonging to the same lot are often similar to each other, and the graph diagrams themselves often overlap each other, it is difficult to distinguish the graph diagrams from each other. In particular, when a large number of graph diagrams are displayed together in a batch, the above problem becomes remarkable.

The present invention has been made in view of the above circumstances, and an object thereof is to graph measured data of a plurality of specimens and to superimpose and display each graph diagram so as to be distinguishable from each other. An object of the present invention is to provide a material testing machine equipped with a graph display means capable of performing the above.

[0009]

In order to achieve the above-mentioned object, a material testing machine according to the present invention comprises a test condition setting means for setting a test condition for a test piece, and the test material executed under the test condition. The data collection means for collecting measurement data indicating the material characteristics of the sample and the graph display means for displaying the collected measurement data in a graph for each of the samples are provided. Sample
Each time the measurement data and condition data showing the test conditions
Both of them are individually filed as one file, and the graph display means described above graphs the measurement data of a plurality of filed test specimens under a fixed display scale, and simultaneously displays them. With the function
Drawing attribute setting means for differentiating the drawing attributes of the graphs showing the material properties of each specimen and identifying and displaying the above graphs respectively, and showing the material properties of each specimen
Offset each drawing position of multiple graphs
And an offset setting means for giving the offset .

Specifically, as described in claim 2,
The drawing attribute setting means is characterized in that the drawing colors or the line types of the respective graph diagrams are made different from each other so that the plurality of graph diagrams to be displayed in an overlapping manner are identified and displayed. In particular, the offset setting means is the material of each specimen.
Specify the drawing position of the graph that shows the charge characteristics.
Offset in the graph axis direction. Especially that
By giving the fuzz amount as a constant offset amount between a plurality of graph diagrams, for example ,
The drawing are sequentially offset by a constant amount.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION A material testing machine according to an embodiment of the present invention, particularly a graph display function 31 provided in a data processing device 30, will be described below with reference to the drawings.
The material testing machine according to this embodiment is basically the testing machine body 10 and the testing machine body 1 as described with reference to FIG.
Dynamometer 20 for controlling the operation of zero, and this dynamometer 20
Various control commands are given to, and measurement data consisting of load and displacement of the specimen measured through the dynamometer 20 is collected, the load / elongation characteristics are obtained and displayed in a graph, and further the load-bearing point is obtained. And a data processing device 30 for obtaining material characteristics such as elastic modulus.

Here, the feature of the material testing machine according to this embodiment is that, as the concept is shown in FIG. 1, a load is applied to the test piece under test conditions set for the test piece. The point is that measurement data indicating the material characteristics, for example, load and displacement, is collected, and this measurement data is individually filed together with condition data indicating the test conditions as one file corresponding to the specimen. . Therefore, the measurement data obtained from a plurality of specimens belonging to the same lot under the same test condition are also filed with the condition data attached to each measurement data.

With such a file structure, not only each measurement data of a plurality of specimens belonging to the same lot but also one measurement graph of a specimen belonging to another lot is displayed in one graph as described later. A graph of each measurement data is displayed on the screen, and the overlay display is performed. Especially, by referring to the condition data attached to the measurement data, the scale of the graph display for each measurement data is adjusted, whereby the graph diagrams shown by a plurality of measurement data can be compared and evaluated with each other under the same display scale. Is displayed overlaid on.

The graph display means (function) 31 included in the data processor 30 basically has variable parameters for the X axis and the Y axis according to the graph display conditions described as a part of the condition data. Set the display scale (scale and unit). Then, the measurement data is plotted in order on the two-dimensional graph display screen (XY screen) specified under the display scale set as described above, thereby drawing the graph diagram indicated by the measurement data. Specifically, the X-axis is the displacement (elongation), the Y-axis is the load, the displacement (elongation) amount and the load value given as the measurement data are plotted, and the load / displacement (elongation) characteristics are thereby plotted. To draw.

On the graph display screen,
When you start the file command as described later and specify an additional file using the file addition command prepared especially for editing multiple measurement data, the measurement data and condition data of the specified file will be However, the data is read in addition to the data that has already been edited. Then, the measurement data of the additionally designated file is graphed and superposed and displayed on the graph display screen which already displays the graph diagram. At this time, the scale adjusting means refers to the condition data (graph display condition) of each file, and performs a display scale adjusting process such as unifying the maximum display scale (scale adjusting means 32). The addition of the measurement data by the additional designation of the file and the superposition display of the graph diagrams by graphing the measurement data are sequentially performed up to the maximum number of files that can be processed on the graph display screen.

In this way, each measurement data of a plurality of specimens is made into a graph, and these graph diagrams are
When overlaying on one graph display screen,
A characteristic function of the graph display means 31 according to this embodiment is that the graph display means 31 is provided with a drawing attribute setting means 33 for distinguishing and displaying the graph diagrams by making the drawing attributes of the graph diagrams different from each other. In point. The drawing attribute setting means 33 comprises means for sequentially assigning to the file while changing the drawing color or its line type as the attribute information of the graphing according to the reading order of the file. Specifically, these pieces of attribute information are preset for each graph item corresponding to each of the graph diagrams that can be simultaneously displayed on the graph display screen, and which graph item the measurement data read file is to be positioned in. The attribute information is given to the file. The drawing colors are, for example, "red" and "green".
.. are given as "yellow", "blue" ..., And the line types are given as, for example, "thick solid line", "thin solid line", "dashed line", "dash-dotted line" ....

Further, the graph display means 31 has a function (drawing attribute setting means 33) of identifying and displaying a plurality of graph diagrams by making the drawing attributes different in this way, and the drawing positions of the plurality of graph diagrams. An offset setting means 34 is provided for offsetting each graph diagram and drawing it by shifting the graph diagrams at a predetermined pitch. The offset setting means 34 gives a shift (offset) in the X-axis direction between a plurality of graph charts, for example, and offset data is given to the attribute information for the graphing.
This offset data is the offset setting means 34.
Is 0 (0) for the measurement data of the first file, Δ for the measurement data of the second file, 2Δ for the measurement data of the third file, ... The measurement data of the second file is given as (n-1) Δ ...
As a result, a graph line diagram in which each measurement data is graphed is drawn with the drawing start point offset by the offset data.

Thus, according to the graph display means 31 having such a function (drawing attribute setting means 33 and offset setting means 34), each measurement data of a plurality of specimens is graphed on one graph display screen. When the graphs are overlaid and displayed, the drawing attributes of the graphs are different from each other. Therefore, the graphs are drawn with a given offset and shifted by a predetermined amount. Therefore, the graphs are clearly identified. It becomes possible. In particular, different graph attributes can be clearly identified and displayed by simply changing the drawing attributes, especially by differently setting each graph item in advance, and by simply performing an offset process. It becomes possible to facilitate comparative evaluation of the material properties shown.

More specifically, the measurement data is displayed as a graph using a data editing screen as shown in FIG. 2, for example. By specifying a file to be evaluated, the measurement data and condition data are read from the specified file, and a list of test conditions is displayed in the test condition display area A of the data edit screen, for example, as shown in FIG. Is displayed for each item, and a graph diagram in which the above measurement data is graphed is displayed on the graph display screen B.

When a file processing command is designated on this data editing screen, a pull-down menu M relating to file processing is displayed. In this pull-down menu M, new commands such as "Add file" and "Release file" are prepared in addition to existing commands such as new creation. , You can add other files as needed. The command to add the above file is
The measurement data of the newly read file is added to the measurement data that is already displayed as a graph, and the graph diagrams that graph each of these measurement data are overlaid on the same screen as shown in FIG. 3, for example. It consists of the function to display.

That is, when a file addition command is designated, a plurality of graph diagrams including the added parts are included on the graph display screen B in the edit screen for a plurality of measurement data as shown in FIG. The number of files that can be drawn simultaneously is set for all files. A graph item screen C showing the drawing attributes of a plurality of graph diagrams is displayed on the side of the graph display screen B, and a graph item screen C corresponding to each of the graph items is displayed below the graph display screen B. A file selection screen D for designating which file of measurement data to read is displayed in the graph item.
The "release file" command is used, for example, on a statistical result screen (not shown) for performing statistical processing on measurement data.

By selecting a file for each graph item on the file selection screen D, the measurement data of the specified file is read out for each graph item and graphed on the graph display screen B. Is displayed. And the display of the graph diagram is the graph item screen C
The display color is changed in accordance with the drawing attribute set in.

When a scale change processing command is specified on the data edit screen, the scale change child screen as shown in FIG. 4 is thereby opened. Basically, on this child screen, condition items regarding the graph display obtained from the above-mentioned condition data are displayed. Using such a child screen, the variable parameters of the X axis and the Y axis in the above-mentioned graph display screen B, the display scale thereof, and the like are changed. The setting items related to the graph display are given according to the variable parameters.

Further, the child screen is provided with setting items relating to the offset of the graph display. By inputting an offset value in this item, offsets are sequentially given to the respective graph diagrams described above, and these graph diagrams are displayed while shifting the drawing position by the offset Δ as illustrated in FIG. . As a result, even if the shapes of multiple graphs displayed in a superimposed manner are similar to each other, the material properties shown by each of these graphs can be clearly identified and displayed, and the comparative evaluation of these can be performed. Is easily done.

The reading of the measurement data of the specimens of the different lots will be briefly described. The editing process (simultaneous graph display) of the measurement data between the different lots is performed as described above. This is realized by adopting a file management structure in which data is filed together with condition data indicating the test condition. By the way, conventionally, as described with reference to FIG. 6, the measurement data of a plurality of specimens are managed separately from the condition data and for each lot, so that the measurement data of other lots are simultaneously measured. It was difficult to read.

In this respect, according to the file management structure in which the measurement data and the condition data are paired into a file for each specimen as described above, no matter which file is designated, the measurement data of the measurement data is Since the conditions for graphing can be obtained from the condition data, it is easy to graph the measurement data, and therefore there is no restriction on a lot basis. Even if the conditions for graphing the measurement data are different between the files, the display scale is adjusted by the scale adjustment function 32 described above, so that a plurality of measurement data are graphed under a constant display scale. It can be displayed, and the comparison process can be performed accurately.

Thus, according to the data processing device 30 configured as described above, particularly the graph display means 31, the measurement data of a plurality of specimens are made into graphs on the data editing screen and the graph diagrams are superposed and displayed. In doing so, the drawing attributes are made different for each of the graph diagrams under the control (management) of the drawing attribute setting means 33, so that the graph diagrams displayed on the graph display screen B are distinguished from each other. Can be easily performed. Moreover, since the offset setting means 34 can be appropriately operated to give an offset to each of the plurality of graph diagrams to sequentially shift the drawing positions, it is possible that the graph diagrams have a shape. However, it is possible to easily grasp the material characteristics while clearly identifying each of these graphs. Therefore, a great effect can be obtained in comparing the measurement data of a plurality of specimens with each other and evaluating the material properties thereof.

The present invention is not limited to the above embodiment. For example, it is possible to change the drawing color and make the line types different from each other. By doing so, even when the graph display screen is printed out using a monochrome printer, it is easy to identify each graph diagram. Further, the number of graph lines to be displayed simultaneously on one edit screen may be determined according to the specifications of the data processing device 30. Further, it is needless to say that the offset amount can be appropriately changed and set according to the measured material characteristics and the like. At this time, if the offset amount is set to zero (0), a plurality of graph diagrams will be displayed in an overlapping manner on the same graph display scale. In addition, the present invention can be variously modified and implemented without departing from the scope of the invention.

[0029]

As described above, according to the present invention, measurement data obtained from a plurality of specimens are made into graphs, respectively, and when the graphs are superposed and displayed on the same screen, each graph is drawn. Since the attributes are different, each graph diagram (material characteristics), for example, due to the difference in display color and line type
It is possible to evaluate this while clearly identifying each. Moreover, it is possible to effectively identify and display a plurality of graph diagrams only by simple display control.

In particular, since a plurality of graph diagrams are displayed with offsets, even if the change characteristics of the graph diagrams are similar, it is possible to accurately grasp each of these graph diagrams. As a result, a great effect such as a great contribution to the evaluation of material properties can be obtained.

[Brief description of drawings]

FIG. 1 is a diagram showing a concept of a graph display process in a material testing machine according to an embodiment of the present invention together with a file management structure.

FIG. 2 is a diagram showing an example of a data editing screen for displaying a graph used in the material testing machine according to the embodiment of the present invention.

FIG. 3 is a diagram showing a configuration example of an edit screen for a plurality of measurement data for displaying a graph used in the material testing machine according to the embodiment of the present invention.

FIG. 4 is a diagram showing an example of an editor screen for changing the scale used in the material testing machine according to the embodiment of the present invention.

FIG. 5 is a schematic configuration diagram of a material testing machine.

FIG. 6 is a diagram showing the concept of conventional graph display processing together with a file management structure.

FIG. 7 is a diagram showing a configuration example of an editing screen for displaying a graph in a conventional material testing machine.

[Explanation of symbols]

10 Testing machine body 20 dynamometer 30 data processor 31 Graph display means 32 Scale adjustment means 33 Drawing attribute setting means 34 Offset setting means

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-62-76410 (JP, A) JP-A-9-159589 (JP, A) JP-A-8-244087 (JP, A) JP-A-8- 114536 (JP, A) JP 7-129219 (JP, A) JP 4-151692 (JP, A) JP 2-26724 (JP, A) Actual flat 8-930 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) G01N 3/00-3/62 G01D ⁷ /00-7/12 G09G 5/00-5/40 JISST file (JOIS)

Claims (3)

(57) [Claims] 1. A test condition setting means for setting a test condition for each individual specimen, and a data collecting means for collecting measurement data indicating material properties of the specimen executed under the test conditions. Graph display means for displaying measurement data in a graph for each of the specimens, and the data collecting means comprises the measurement data for each of the specimens.
One file with condition data showing the test conditions
As individually filed, the graph display means has a function of simultaneously graphing measurement data of a plurality of filed test specimens under a constant display scale and simultaneously displaying them, a drawing attribute setting means for rendering attributes of a graph diagram showing the specimen material properties respectively made different from each other to identify displaying the each graph chart, the material properties of the specimen which
Offsets are drawn at the drawing positions of the multiple graphs shown.
Materials testing machine characterized by comprising an offset setting means for providing bets. 2. The material testing machine according to claim 1, wherein the drawing attribute setting means makes the drawing colors or line types of the graph diagrams different from each other. 3. The offset setting means is provided for each specimen.
Drawing positions of multiple graphs showing material properties
Is also offset by a predetermined amount in the direction of the predetermined graph axis.
The material testing machine according to claim 1, wherein