JP2000258321A - Material testing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a material testing machine which improves ease of use and saves the labor of testing by facilitating setting a test condition. SOLUTION: A dynamometer for controlling to drive a testing machine body preserves a condition file of test conditions in an EEPROM 5. A group of a plurality of condition files is preserved corresponding to each of a plurality of user IDs. A password corresponding to the user ID is registered. When an input password agrees with the registered password, the condition file can be read out and rewritten. A comment indicating characteristics of test conditions is attached to the condition file and stored together with the condition file. The comment together with a condition file number are displayed when the condition file is read out. A help key is set to a panel face of an operation display panel part 1. The test conditions including recommended values of preliminarily set test conditions are selectively displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a tester main body for applying a load to a test piece, and a dynamometer for driving and controlling the tester main body, and stores test conditions in the dynamometer as a condition file. It relates to a material testing machine.

[0002]

2. Description of the Related Art Conventionally, when performing an automatic load test on a material testing machine such as a hydraulic universal testing machine, it is necessary to set various conditions required for the test. For example, when performing a tensile test based on JIS standards, the stress rate [N / mm ² / sec
], Constant speed ram stroke [mm / min], critical stress value (speed switching point) [N / mm ² ], and cross-sectional area [mm ² ]. These setting values may be reused at a later date, and it is convenient to memorize them.

Conventionally, by inputting a predetermined number using a numeric keypad on a console panel, the input number is used as a condition file number, and the currently set values of each item are set as a set of test conditions. It is stored in a file. When a stored test condition is called, a condition file number is designated.

[0004]

However, since a plurality of operators operate one tester and a dynamometer controlling the tester, test conditions to be created are frequently updated.
For this reason, when performing the same test as the previous test, the stored conditions may be erroneously deleted, and the setting values of various condition items may be changed while referring to the instruction manual, specifications, JIS standards, etc. It was necessary to input and set the test conditions.
In particular, when the user is unfamiliar with the test, there is a problem that it is difficult to set the test conditions and the test requires time and effort. Also,
In some cases, the same test cannot be performed due to forgetting the set value.

Further, in the conventional material testing machine, since the condition file is designated only by the condition file number, it is difficult to identify the test content corresponding to the condition file number. It is necessary to confirm the item, and when the condition is not the desired condition, the condition file number has to be specified again and the condition must be called, so that there is a problem that usability is poor.

An object of the present invention is to make it easier to set test conditions in a material testing machine, to improve usability, and to save time and effort for testing.

[0007]

According to a first aspect of the present invention, there is provided a material testing machine comprising: a testing machine main body for applying a load to a test piece; and a dynamometer for controlling the driving of the testing machine main body. In a material testing machine having a control unit for accumulating a plurality of condition files corresponding to a plurality of test conditions and performing a test in accordance with a test condition of the set condition file, the control unit includes various types of information. Display means for displaying
Condition file setting means for setting a condition file, password setting means capable of setting a password corresponding to the plurality of condition files, and a condition file corresponding to the password by inputting the password set by the password setting means And condition file management means for enabling reading and rewriting of the data.

According to a second aspect of the present invention, there is provided a material testing machine including a testing machine main body for applying a load to a test piece, and a dynamometer for controlling the driving of the testing machine main body. In a material testing machine having a control unit for accumulating a plurality of corresponding condition files and performing control in accordance with a test condition of a set condition file, a display unit for displaying various information on the control unit, Condition file setting means for setting a condition file; password setting means capable of setting a password corresponding to the plurality of condition files; and conditions corresponding to the password by inputting the password set by the password setting means. The file can be read and rewritten, and identification information indicating the characteristics of the test conditions of the read condition file is stored in the condition file. A condition file for displaying, on the display means, each condition file number of a plurality of condition files corresponding to the password and identification information corresponding to each condition file when the condition file is read by inputting the password; Management means.

According to a third aspect of the present invention, there is provided a material testing machine having the configuration of the first or second aspect, wherein the plurality of condition files previously store test conditions for executing a test and recommended values thereof. When setting a condition file in the control unit, the test condition and its recommended value are displayed on the display unit in response to a search operation of the condition file setting unit.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a material testing machine according to an embodiment of the present invention. The tester main body 10 includes an upper crosshead 10a for applying a load to the state of the test piece S having a fixed lower end, a ram (hydraulic cylinder) 10b for driving the upper crosshead 10a, and a ram stroke detector for detecting a stroke of the ram 10b. 10c, ram 10b
And a load detector 10d for detecting the internal pressure of the ram as a load value, and an extensometer 10e for detecting the extension of the test side S. The ram 10b is driven by the hydraulic pressure of the hydraulic servo system A.

The dynamometer 20 includes a digital display panel 20a for digitally displaying a load value and the like, an indicator 20b for driving a pointer by a pulse motor and displaying the load value in an analog manner, a hydraulic servo system A during a test, and a digital display panel 20a.
And a control unit 20c for automatically controlling the indicator 20b, and an emergency stop button 20d. The output of the ram stroke detector 10c, the load detector 10d, and the extensometer 10e of the tester main body 10 is input to the dynamometer 20, and the load value is displayed on the digital display panel 20a and the indicator 20b based on these outputs. The load, peak load, displacement, and the like are displayed on the digital display panel 20a.

FIG. 2 is a block diagram showing a main part of the dynamometer 20, and the control unit 20c is constituted by a microcomputer provided with the CPU 2. The CPU 2 controls the entire dynamometer 20 using the working area of the RAM 4 based on a control program stored in the ROM 3.
The EEPROM 5 stores set values such as test conditions, and the operation display panel unit 1 is used to input test conditions, information on the shape and dimensions of test pieces, display each test condition and input information, and the like. is there. The printer 6 outputs a result of the statistical operation. Interface (I / F)
7, a digital display panel 20a, an indicator 20b, and an emergency stop button 20d are connected, and further, A / D conversion for A / D converting the outputs of the ram stroke detector 10c, the load detector 10d, and the extensometer 10e, respectively. Vessels 31, 32,
33, a control circuit 34 for outputting a control signal to the hydraulic servo system A is connected to each.

With the above configuration, the CPU 2 comprises a ram stroke detector 10c, a load detector 10d, and an extensometer 10e.
Is taken in as digital data, and the digital data is output to the digital display panel 20a and the indicator 20b, respectively, so that the digital display of the measured value and the pointer display by the indicator are performed. The data of various measured values are stored in RAM
4 and performs a statistical operation based on the stored measurement data, and prints out the result of the statistical operation from the printer 6. In addition, as will be described later, a user ID and a password are determined in accordance with an input operation on the operation display panel unit 1, and reading and writing of a condition file of test conditions are controlled. Also, the cross-sectional area of the test piece is calculated, and the EEPR is changed according to the input operation.
It controls writing and reading of test conditions for OM5. Further, a predetermined test condition of the EEPROM 5 is displayed as a help screen, and the test condition is set based on a condition file of the selected test condition.

When the emergency stop button 20d is operated during various tests, the CPU 2 controls the hydraulic servo system A to stop the operation of the tester main body 10.

FIG. 3 is a diagram showing a panel surface of the operation display panel unit 1. The operation display panel unit 1 includes a liquid crystal display 11 and an operation switch group 12, and the operation switch group 12 includes a ten key 12a. Many other operation keys are provided. When each key is indicated in the following description, FIG.
The characters marked on each key are mainly described in parentheses of “[]”.

FIG. 4 is a diagram showing the structure of a database of condition files secured in the EEPROM 5 of the embodiment. First, there are ID areas for registering five user IDs, and a password is registered in each ID area. There is a password area. Register 10 sets of condition files in each ID area and password area.
There are 0 condition file areas. When the user inputs the user ID, the password area corresponding to the user ID is read. If a password is registered in the password area, the condition file is read unless the same password as the registered password is input. And writing cannot be performed. When the same password as the registered password is input for the same user ID, the condition file can be read and written for a group of condition files corresponding to the user ID. Each condition file area is provided with a comment area for storing comments (identification information) such as the type of the condition file.
When the condition file is read, the comment in the comment area is also read and displayed at the same time.

The CPU 2 detects the operation of the operation switch group 12 of the operation display panel unit 1 and controls the display of the liquid crystal display 11, and switches the display or captures data according to the input operation of the operation display panel unit 1. I do. Next, an example of a password input operation will be described. For example, after completing the setting of test conditions on the test condition setting screen, if you want to save the set test conditions, press the [WRITE] key. Thereby, a password input screen as shown in FIG. 5 is displayed. On this screen, the first line displays the user ID and "PASSWORD ****?"
On the second line, an inputtable character string “01234... XYZ” is displayed, and an underbar indicating the current pointer is displayed for one character in the character string. The third and fourth lines "CURSOR [0] <--
> [.] ”Indicates that the cursor moves to the left by the [0] key of the numeric keypad 12a, and the cursor moves to the right by the [.] Key. The display of“ INPUT-> [ENT] ”indicates [ When the ENT key is pressed, one character at the position of the cursor at that time is input. Also, the display of "DELETE-> [C / N]" indicates that pressing the [C / N] key deletes the previously entered character, and the display of "BACK->[BS]" indicates [BS Pressing the [] key returns to the test condition setting screen.

In accordance with the instructions on the display, the password is entered one character at a time, and when the last fourth character is entered, it is determined whether the entered password matches the registered password. If the passwords match, the condition file selection screen shown in FIG. 6 is displayed. In addition,
If no password is registered. By pressing the [WRITE] key, the condition file selection screen shown in FIG. 6 is displayed. In this screen, for example, “SAVE; 0,1,2,5
", The condition file number where the condition file is already saved is displayed, and"NON-SAVE; 0,3,4,
A condition file number such as "6,7,8,9" for which no condition file is stored is displayed. In the third line, "WRITE FILE N
O. # "is displayed, and when the condition file number is input with the ten keys 12a, a comment input screen is displayed as shown in FIG.

Next, a comment input operation will be described with reference to FIG. In the screen of FIG. 7, the condition file number and "F #" are displayed on the first line, and ": ####
An unentered comment input area such as "## ... ######" is displayed, and an inputtable character string "01234 ... XYZ" is displayed on the second line. Then, as the function of the operation key is displayed on the third and fourth lines, [0]
Key, [.] Key, [ENT] key, [C / N] key, [BS] key,
When the [SKIP] key is operated, every time an alphanumeric character is input, the echo is sequentially echoed back and the "#" in the comment input area changes to the input character.

When the input is completed, a confirmation screen is displayed,
For example, when data is already stored in the condition file, as shown in FIG. 8, "OVER WRITE OK? YES-
> [ENT], NO-> [C / N] "is displayed,
[ENT] key to overwrite, [C / N] to cancel
Press the key. If no data has been saved in the condition file, "WRITE OK? YES-> [ENT], N
O-> [C / N] ”is displayed. Press the [ENT] key to write, or press the [C / N] key to cancel.
In this way, the condition file can be saved or updated by matching the passwords, and a comment can be added to the condition file.

Next, at the time of reading the condition file, first, when the [USER ID] key is operated, a user selection screen shown in FIG. 9 is displayed. In the first line of this display, "USER ID NOW:
The current user ID number is displayed as "NO. #"
The user ID number is displayed on the second line, and the user name is displayed on the third line correspondingly. Therefore, when the user number is entered with the ten keys 12a and the [ENT] key, a password input screen similar to that of FIG. 5 is displayed. When the password is input by the same operation as above, and the password matches the password corresponding to the current user ID, A condition file selection screen as shown in FIG. 10 is displayed. A desired condition file can be read by inputting a condition file number using the numeric keypad 12a on the condition file selection screen. If the condition file corresponding to the specified condition file number has not been saved, "[NO FILE! RETLY-> [ENT], NO->
[C / N] ”is displayed. To start over, press the [ENT] key.
To cancel, press the [C / N] key.

Here, "FILE COMMENT->[SKIP]" is displayed on the fourth line (the second line is blank) of the condition file selection screen. That is, when the [SKIP] key is operated to select a condition file, the comment screen of FIG. 11 is displayed, and the condition file number (“F 1” or the like) and the comment corresponding to the condition file (“CONCRETE STANDARD-
01 KS FIKE "). As a result, the type of the test condition in the condition file can be easily confirmed, and the operation of selecting the condition file is simplified.

FIG. 12 is a flowchart of a condition file writing process when saving a condition file. For example, when saving the test conditions set as described above, [WR
The process starts when the [ITE] key is pressed. First, in step S11, it is determined whether or not a password is registered for the currently selected user ID. If it is not registered, the process proceeds to step S14. If it is registered, a password input process is performed in step S12. . Then, it is determined in step S13 whether the password matches the registered password. If the password does not match, the process returns to step S12. If the password matches, the condition file selection screen shown in FIG. Processing related to input is performed, and it is determined in step S15 whether a condition file number has been input. If the condition file number has not been input, the process returns to step S14. If the condition file number has been input, in step S16, the comment input screen of FIG. 7 is displayed, and processing related to the comment input is performed. It is determined whether the input has been completed. If not completed, the process returns to step S16. If completed, in step S18, overwriting and the like are confirmed, a condition file is written together with the comment, and the process ends. Although illustration of the flowchart is omitted, during the above-described processing,
If there are other operations such as the [C / N] key and the [SKIP] key, processing corresponding to each of those operations is performed. Thus, user I
When a password is registered in D, the file cannot be saved or read unless the same password as the registered password is input.

As described above, storage of a condition file and management of reading can be performed by inputting a password.
Next, another example of control using a password will be described. FIG. 13 is a flowchart of a process for newly inputting and overwriting a user ID. A password is used for overwriting a user ID. First, in step S21, a process of selecting and inputting a number of an ID area for setting a user ID is performed.
When the number of the D area is input, a process of inputting a new user ID is performed in step S22. When a new user ID is input, it is determined in step S23 whether a password is registered corresponding to the ID area number. If a password is not registered, step S2 is performed.
Proceed to step 6 if the password has been registered
At 24, the password input processing as described above is performed. Then, it is determined in step S25 whether the password matches the registered password. If the password does not match, the process returns to step S24. It is determined, and if confirmation is specified, the new user ID is overwritten as the user ID of the current ID area, and the process is terminated. Step S26
When the [BS] key is operated, the process returns to step S22. By the above processing, if the password is not registered, the user ID can be newly set or overwritten. However, if the password is registered, the user ID cannot be changed unless the same password is input. .

FIG. 14 is a flowchart of a new password input and overwrite process. In step S31, a process of selecting and inputting a user ID is performed.
Then, it is determined whether or not a password has already been registered for the user ID.
Proceeding to step 5, if the password has already been registered, the password input processing is performed in step S33 as described above. If a password is input, it is determined in step S34 whether the password matches the registered password. If the password does not match, the process returns to step S33. If the password matches, the process returns to step S35.
Perform input processing of a new password. Then, in step S36, it is determined whether or not the confirmation is designated by operating the [SKIP] key or the like. If the confirmation is designated, a new password is registered as the password of the current user ID, and the process ends. When the [BS] key is operated in step S36, the process returns to step S21.

With the above processing, if a password has not been registered, a new password can be registered as it is. However, if a password has been registered, the password is updated and updated unless the same password is input. Can not do.

The operation switch group 12 of the operation display panel unit 1
Has [HELP] key, [LOAD] key, [STROK]
E] key, [STRAIN] key, [TENSION] key and [OTHERS] key
When the [HELP] key is pressed after selecting a test type by operating the keys, a help screen showing samples of each test condition corresponding to the test type is displayed on the liquid crystal display 11 as shown in FIGS. Will be displayed.

In FIG. 15, (A) is a help screen for constant speed load control, (B) is a help screen for constant speed ram stroke control, (C) is a help screen for constant speed strain control, and (D) is a tensile test. (E) is a help screen for concrete compression strength test control, (F) is a help screen for concrete bending strength test control, and (G) is a help screen for concrete tensile strength test control. In FIG. 16, (A) is a help screen for a constant speed load cycle of the cycle test control, (B) is a help screen for a constant speed ram stroke cycle of the cycle test control, and (C) is a constant speed strain cycle of the cycle test control. (D) is the help screen for the constant speed load interval of the interval test control, (E) is the help screen for the constant speed ram stroke interval of the interval test control, and (F) is the help screen for the constant speed strain interval of the interval test control. Help screen.

As described above, since a plurality of test condition samples can be displayed as a help screen,
The settable condition range of the tester itself can be determined. Also,
For tests with JIS standards, the conditions are displayed.
Tests based on standards can be performed reliably. If the contents of this help screen can be rewritten, a help screen suitable for the user can be obtained.

[0030]

As described above, according to the first aspect of the present invention,
According to the material testing machine, a password corresponding to a group of a plurality of condition files of a plurality of test conditions can be set by a dynamometer, and a condition file corresponding to the password can be set by inputting the set password. Can be read and rewritten, so that only the operator who knows the password cannot easily overwrite the condition file, and the operator can secure the necessary condition file. By simplifying the setting of the test conditions, the usability is improved and the labor of the test can be saved.

According to the material testing machine of claim 2 of the present invention,
With the dynamometer, a password corresponding to a group of a plurality of condition files of a plurality of test conditions can be set, and reading and rewriting of a condition file corresponding to the password can be performed by inputting the set password. Further, identification information corresponding to the condition file is stored in association with the condition file, and when the condition file is read out by inputting the password, the condition file number and the identification information corresponding to each condition file are displayed. Therefore, by using this identification information, the test contents corresponding to the condition file can be easily identified, and the necessary condition file can be immediately read out. You can save time and effort.

According to the material testing machine of claim 3 of the present invention,
The same effect as that of claim 1 or claim 2 is obtained, and the condition file includes a predetermined test condition and a recommended value of the test condition. Test conditions, including recommended values, are displayed.
It is not necessary to set the test conditions while observing the standards, etc., even if you are unfamiliar with the test, you can easily understand the test conditions, and by setting the test conditions easily, you can improve the usability and improve the test performance. You can save time and effort.

[Brief description of the drawings]

FIG. 1 is a block diagram of a material test system according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a main part of a dynamometer according to the embodiment.

FIG. 3 is a diagram illustrating a panel surface of an operation display panel unit according to the embodiment.

FIG. 4 is a diagram showing a structure of a condition file database in the embodiment.

FIG. 5 is a diagram illustrating a display example of a password input screen according to the embodiment.

FIG. 6 is a diagram illustrating a display example of a condition file selection screen according to the embodiment.

FIG. 7 is a diagram showing a display example of a comment input screen in the embodiment.

FIG. 8 is a diagram showing a display example of a screen of a confirmation message in the embodiment.

FIG. 9 is a diagram illustrating a display example of a user selection screen according to the embodiment.

FIG. 10 is a diagram showing another display example of the condition file selection screen in the embodiment.

FIG. 11 is a diagram showing another display example of the comment screen in the embodiment.

FIG. 12 is a flowchart of a condition file writing process in the embodiment.

FIG. 13 is a flowchart of a process for newly inputting and overwriting a user ID in the embodiment.

FIG. 14 is a flowchart of a new password input and overwrite process in the embodiment.

FIG. 15 is a diagram illustrating a display example of a help screen according to the embodiment.

FIG. 16 is a diagram illustrating another display example of the help screen in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operation display panel part 2 CPU 3 ROM 4 RAM 5 EEPROM 10 Tester main body 11 Liquid crystal display 12 Operation switch group 12a Numeric keypad 20 Dynamometer 20c Control part

Claims (3)

[Claims] 1. A test machine main body for applying a load to a test piece, and a dynamometer for driving and controlling the test machine main body, wherein a plurality of condition files corresponding to a plurality of test conditions are stored in the dynamometer. In a material testing machine having a control unit for performing a test in accordance with a test condition of a set condition file, a display unit for displaying various information on the control unit, and a condition file setting unit for setting a condition file A password setting unit capable of setting a password corresponding to the group of the plurality of condition files; and enabling reading and rewriting of the condition file corresponding to the password by inputting the password set by the password setting unit. A material testing machine comprising: condition file management means. 2. A tester main body for applying a load to a test piece, and a dynamometer for driving and controlling the tester main body, wherein a plurality of condition files corresponding to a plurality of test conditions are stored in the dynamometer. In a material testing machine having a control unit for performing a test in accordance with a test condition of a set condition file, a display unit for displaying various information on the control unit, and a condition file setting unit for setting a condition file A password setting unit capable of setting a password corresponding to the group of the plurality of condition files; and enabling reading and rewriting of the condition file corresponding to the password by inputting the password set by the password setting unit. At the same time, identification information indicating the character of the test condition of the read condition file is stored in association with the condition file, and the password is stored. Condition file management means for displaying, on the display means, each condition file number of a plurality of condition files corresponding to the password and identification information corresponding to each condition file when the condition file is read by inputting the password. Material testing machine characterized by the following. 3. A test condition for executing a test and a recommended value thereof are stored in advance in the plurality of condition files. When setting the condition file in the control unit, the condition file setting means searches the condition file. 3. The material testing machine according to claim 1, wherein the test condition and the recommended value are displayed on the display unit in accordance with an operation.