JP3499434B2 - 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 an editing function capable of displaying measurement data of a plurality of specimens tested for each lot, for example, load data and displacement data, which are superposed on each other and displayed as a graph. The present invention relates to a material testing machine.

[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. Dynamometer 20 that controls the load and displacement of the specimen under load, and the material properties of the specimen according to the measurement data including the load and displacement detected by the dynamometer 20. And a data processing device 30 to be obtained.

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
The dynamometer 2 comprises a personal computer, for example.
The measurement data composed of the load and displacement detected at 0 is fetched 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. It should be noted that while communicating control commands and the like between the data processing device 30 and the dynamometer 20, the data processing device 30 remotely gives commands such as test conditions to the sample to remotely control the dynamometer 20. In some cases, the operation is controlled.

In addition, the data processing device 30 uses a display (not shown) provided in the data processing device 30 to display the measured data obtained as described above as a load / elongation characteristic and a stress / strain characteristic as a graph. A graph display function 31 for displaying the converted data and a display function for displaying characteristic values obtained from the measurement data are provided. Graph display function 31
In the graph display by, for example, under the graph display condition set as one item regarding the test condition, the above measurement data is displayed on a two-dimensional plane with a predetermined display scale in which the X axis is displaced (extended) and the Y axis is the load. This is done by plotting.

[0006]

By the way, the test of a test piece in a material testing machine is usually carried out in lot units with a plurality of test pieces forming a predetermined group as one lot.
Then, as shown in the concept of FIG. 5, the test conditions are set in units of lots, and the measurement data obtained from each test piece is managed in lot units together with the condition data indicating the test conditions. Specifically, the measured data obtained from each specimen is stored as a data file, and the test conditions (condition data) and the data file name belonging to the lot are described in the condition file. Manages the data file.

In the above-mentioned graph display, however, the graph display condition is exclusively obtained from the condition file, the measurement data is read out from the data file under the control of the condition file, and is displayed as shown in FIG. 6, for example. Be seen. At this time, the measurement data is also read from another data file belonging to the same lot, and the measurement data is compared by displaying the measurement data overlaid on the previously displayed graph. That is, each measurement data of a plurality of specimens belonging to the same lot is read out, and these measurement data are simultaneously superposed and displayed in a graph, so that the comparison study and the statistical processing are executed.

In the example shown in FIG. 6, measurement data obtained from two specimens belonging to the same lot are superposed as a "load / displacement curve" and displayed graphically for comparison. The measurement results including the "proof stress point", the "maximum load", the "break point", and the "elastic modulus" are displayed side by side for comparison. Such a display is performed while selecting and designing the specimens to be compared in the same lot.

However, when proceeding with a material test, it is often desired to compare the measured data with, for example, standard sample data or measured data of another lot. However, conventionally, the measurement data (data file) represented in the graph display as described above is merely managed in lot units under the condition file described above. It was not possible to perform edit processing such as displaying graphs at the same time.

By the way, in the case of editing data with data of another lot, for example, after converting the measured data into a form that can be analyzed, the converted data is subjected to a secondary analysis process according to the test conditions. Then, complicated processing such as integration is required. In particular, this kind of data conversion and secondary analysis processing is left to the user, and there is a problem that it is necessary to separately prepare an application for analysis processing.

The present invention has been made in consideration of such circumstances, and its purpose is to display the measurement data obtained from a plurality of specimens at the same time in a graph form regardless of the difference in lots. It is an object of the present invention to provide a material testing machine equipped with a file management structure and a graph display function that can perform editing such as statistical processing between these measurement data.

[0012]

In order to achieve the above-mentioned object, the material testing machine according to the present invention uses the measurement data showing the material characteristics of the test piece under load under the preset test conditions, for the test. Means for individually storing the files together with the conditions corresponding to each of the specimens, and classifying a plurality of stored files into predetermined groups,
Information indicating a group (for example, a lot name) and the group
And a file management means for managing the connection structure between a plurality of files by registering a sequence of file names belonging to the file, and measuring the file by selectively reading out the files managed by the file management means. Graph display means for displaying data in the form of a graph, and another file is added to the file displayed in the graph on the editing screen by the graph display means, and the measured data of the added file is graphed and displayed first. File addition method to be displayed on the existing graph and the data of the displayed graph.
Is stored as a separate file, and
The connection structure with each of the above files used for overlapping display
And a file registration unit that registers with the file management unit .

That is, according to the present invention, the measurement data obtained from each specimen is stored as a file together with the test conditions so that the test conditions can be obtained at the same time when the measurement data of a specific specimen is obtained. By doing so, it is possible to read the measurement data of multiple specimens out of the lot management frame, edit them on the same editing screen, and display multiple graphs (characteristic curves) showing their material properties in an overlapping manner. It is characterized by having done.

Further, in a preferred aspect of the present invention, as described in claim 2, when the measurement data of a plurality of files are displayed as a graph in the file adding means and displayed in a superposed manner, for example, each measurement data is adjusted in accordance with its maximum scale. It is characterized in that it is provided with scale changing means for unifying the display scale of the graph. Specifically, it is characterized in that the display scale is adjusted according to the graph display condition in the test conditions stored in association with each measurement data, and the graphs are superimposed and displayed.

[0015] Preferably, the file management means
Is a name that indicates the grouping of multiple files (for example,
Name) as the heading, and multiple
By registering each file name of the file side by side, multiple files can be registered.
It is characterized by managing the connection structure between files .

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION A material testing machine according to an embodiment of the present invention will be described below with reference to the drawings, in particular, a load and a displacement of a specimen tested under a predetermined test condition under load. The characteristic file management structure of the present invention for the measurement data consisting of and the editing function for the measurement data will be described.

The material testing machine according to this embodiment is basically the testing machine body 10 and the dynamometer 20 for controlling the operation of the testing machine body 10 as described with reference to FIG. 20 gives various control commands, collects the measurement data consisting of the load and displacement of the specimen measured through the dynamometer 20, obtains the load / elongation characteristics and displays them in a graph, and further The data processing device 30 calculates material characteristics such as points and elastic modulus.

Now, the data processing device 3 according to this embodiment.
Where 0 is a characteristic, as shown in the concept of FIG. 1, for example, a test is performed by applying a load to each of a plurality of specimens belonging to the lot under test conditions preset for each lot. When storing the measurement data D of, for example, the load and displacement of each of the specimens, the measurement data D of each specimen is filed together with the condition data S indicating the test condition T as one data file F. In point. For the information on the lot, the file management unit 32 determines, for example, information consisting of the lot name and the arrangement of the file names of the measurement data of each of the plurality of specimens belonging to the lot, that is, the connection structure between the files. It is characterized in that it is stored as a management file M shown.

That is, the measurement data D of each specimen is individually filed together with the condition data S thereof and managed as an individual independent data file F. Also, by the management file M in the file management unit 32, for example, a lot The connection structure between a plurality of files forming a unit is managed for each. Therefore, each data file F is independently managed corresponding to each test piece regardless of which lot it belongs to, and the management file M
Which of the data files F belongs to the same lot is indirectly managed above.

The data editing unit 33 including the graph display function 31 selectively reads out the data file F using a predetermined data editing screen, which will be described later, and obtains the measurement data D shown in the data file F. , And has a function of displaying a graph according to a graph display condition given as one of the condition data S. With this graph display function 31, for example, measurement data D including load and displacement
In accordance with the above, the material characteristics showing the load / elongation characteristics are displayed graphically on a predetermined display scale in which the X axis is the displacement (elongation) and the Y axis is the load. Then, the data editing unit 33 has a file adding function 34 that adds and reads another data file F while the graph display based on the measurement data D obtained from the specific data file F is being executed on the data editing screen. I have it. The additional reading of this file is performed regardless of the lot type because the data file F is individually managed as described above. Therefore, the desired arbitrary data file F is designated.

When another data file F is additionally read out, the scale changing function 35 is activated and, for example, the display scale of the already displayed graph and the measurement data D of the additionally read out data file F are displayed in a graph. The display scale will be checked against the above. Then, in order to unify the display scale to, for example, the maximum display scale, a display scale changing process is executed. Specifically, the maximum displacement on the X-axis of one graph is 50 mm
In the case where the maximum displacement amount of the other graph is 20 mm, the maximum scale of the graph display is automatically set to 50 mm in order to display all the measured data in the graph. At this time, the display scale changing process is similarly executed for the maximum load amount on the Y axis.

The above-mentioned graph display function 31 is a graph showing the measurement data D of the additionally read file F on the already displayed graph under the display scale changing setting by the scale changing function 35. Are overlaid and displayed. At this time, the display colors of the plurality of types of graphs (characteristic curves) displayed in an overlapping manner are made different from each other, and the identification display is performed. In addition, such overlapping display of graphs is not limited to the two of the measurement data D already displayed in the graph and the measurement data D of the added data file F, and each measurement of the data file F repeatedly and sequentially added. It is executed for each data D.

On the other hand, in the data editing section 33, under the control of the graph display function 31, as described above, a new edit data consisting of a plurality of measurement data D displayed in a graph on the data edit screen is displayed. A file registration function 36 for registering as a file is provided. This file registration function 36 registers, for example, the file name of the data file F in which the measurement data D displayed in a graph on the data edit screen are stored in the management file M in the file management unit 31, and It is done by giving the edited name. By such file registration, the data (result) edited as the superimposed display of the graph is managed by the file management unit 31 in parallel with the lot information described above.

Thus, such a data management structure and the above-mentioned graph display function 31 and file addition function 34 are provided.
According to the data editing unit 33 having the above, the measurement data D obtained from the specimens between different lots are
These can be overlaid on the same graph and displayed as a graph, and the material characteristics shown in each graph can be effectively compared. In particular, it is possible to arbitrarily compare material characteristic data limited to the same lot between different lots. Moreover, the display scale changing function 35 is used to unify the display scales of the graphs and display the graphs, so that comparison and comparison between the measurement data D can be effectively performed.

More specifically, in the data processing device 30 of the material testing machine according to the present invention, for example, FIG.
The data editing screen as shown in (3) is prepared, and by selecting and designating a specific specimen, the measurement data D and the condition data S are read from the data file F corresponding to the specimen. Then, along with the list of the test conditions, the material characteristics indicated by the measurement data D are displayed in a graph. Then, when you select the file processing command on the data edit screen, new commands such as "Add file" and "Release file" are prepared in addition to the existing commands such as new creation. Another file can be appropriately added to the file opened on the data edit screen.

That is, the addition of this file is performed by adding the measurement data D of the newly read file to the measurement data D already displayed in the graph, and making a graph (characteristic curve) indicated by each of these measurement data D. For example, as shown in FIG. 3, it has a function of displaying a graph in an overlapping manner on the same screen. That is, when new measurement data D is obtained from the data file F designated by the addition of a file, the measurement data D already has a certain characteristic as shown in FIG. 3 under the control of the scale changing function 35 described above. In the graph display screen which is displayed as a curve α, the display scales are unified and displayed as a characteristic curve β, and these graphs are simultaneously displayed in an overlapping manner. At this time, the information (file name) of the data file F (specimen) regarding each graph is displayed in a list as shown in FIG. 3 instead of the setting condition of a certain test condition as shown in FIG. If you want to change the display color of each graph,
Information indicating which data file F (sample) corresponds to each display color is also displayed so that the graphs can be easily identified.

Thus, by using such a data editing screen, each measurement data of a plurality of specimens is mutually specified while selectively adding and specifying the data file F in which the measurement data D for each specimen is filed together with the condition data S. According to this material testing machine, which has the function of displaying graphs by superimposing,
It is possible to effectively edit the measurement data between different lots and to compare the material characteristics on the same graph without being restricted by whether or not they belong to the same lot. Moreover, each measurement data D of a plurality of specimens can be easily compared on one data editing screen without separately preparing an analysis application and secondarily analyzing each measurement data D. Therefore, the management of the measurement data D for a plurality of specimens over a plurality of lots can be facilitated, and various editing processes for the measurement data D can be facilitated, which is a great effect.

The present invention is not limited to the above embodiment. For example, the data of the graph displayed in a superimposed manner on the data edit screen may be saved as an edit data file separately from the above-mentioned data file F. In the above-described embodiment, the display scale is changed according to the maximum display scale. However, if a characteristic change point (range) or the like to be noted is specified, the characteristic change point (range) is focused on. It is also possible to set the display scale of the graph. 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, the measurement data indicating the material properties of the specimen under load under the preset test conditions is stored in a file together with the test conditions, and each specimen is stored. Since they are individually stored in correspondence with, it is possible to read out the measurement data of an arbitrary test sample and display it in a graph without depending on the lot which is the unit of the material test. In other words, it is possible to add another file to the file displayed in the graph on the edit screen as appropriate, graph the measurement data of the added file, and superimpose it on the previously displayed graph. On top of that, overlay
The data of the graph displayed together is stored as a separate file.
Therefore, there are restrictions on whether or not they belong to the same lot.
Effectively editing the measurement data between different lots without
It is possible to compare the material properties on the same graph.
It Therefore, it is possible to easily and effectively compare the material characteristics between arbitrary test pieces.

According to claim 2, since the display scales of a plurality of measurement data can be unified and displayed in a graph, the collation can be facilitated even when the test conditions are different, and according to claim 3, the edit can be made. Since the created data can be registered as a new file, it is possible to effectively utilize it for subsequent data processing.

[Brief description of drawings]

FIG. 1 is a diagram showing a concept of a file management structure of measurement data and a graph display function in a data editing function in a material testing machine according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a data edit screen according to an embodiment of the present invention.

FIG. 3 is a diagram showing an example of a graph display screen according to an embodiment of the present invention.

FIG. 4 is a diagram showing a schematic configuration of a material testing machine.

FIG. 5 is a diagram showing a management structure of measurement data in a conventional material testing machine.

FIG. 6 is a diagram showing an example of a conventional graph display screen.

[Explanation of symbols]

10 Testing machine body 20 dynamometer 30 data processor 31 Graph display function 32 File Management Department 33 Data editor 34 File addition function 35 Scale change function 36 File registration function F data file D measurement data S condition data M management data file

Continuation of front page (56) Reference JP 62-76410 (JP, A) JP 9-22277 (JP, A) JP 9-159589 (JP, A) JP 8-244087 (JP , A) JP 8-114536 (JP, A) JP 7-129219 (JP, A) JP 4-151692 (JP, A) JP 2-26724 (JP, A) 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 (2)

(57) [Claims] 1. The measurement data indicating the material properties of each test piece loaded under a preset test condition is stored in a file together with the test condition and individually recorded for each test piece. Means to remember and classify the stored multiple files into predetermined groups,
Information about each group and the group
You can register a list of file names that belong to
A file management means for managing the connection structure between the files and a graph display means for selectively reading out the file managed by the file management means and displaying the measured data of the file in a graph are provided. means a Fairu additional means for displaying superimposed on the graph to add another file to the file that is displayed in a graph on the editing screen is displayed first to chart the measurement data of the additional files, overlaid The data of the graph displayed together is saved as a separate file.
And memorize it, and display it in superposition with this separate file.
The file management of the combined structure with each of the files used
A material testing machine, comprising: a file registration means for registering with the means . 2. The file adding means comprises scale changing means for unifying the display scales of the graphs when the measurement data of a plurality of files are graphed and displayed in an overlapping manner. The material testing machine described in.