JP4506923B2 - Material testing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a material testing machine.
[0002]
[Prior art]
In a material testing machine, generally, the load mechanism, the elongation of a test piece, and the like are measured by a load cell, an extensometer or the like while driving a load mechanism to apply a load to the test piece.
[0003]
Various standards such as JIS, ISO, and ASTM have been established for test conditions in material tests, such as loading method, test piece shape / dimension, and test piece gripping method. When a material test is performed in accordance with the above, usually the operator first reads the document of the standard, and in accordance with the description, a test piece having a shape and size necessary for the test and a grip for holding the test piece. Select and prepare tools such as tools. Further, the test is started after manually setting the operating conditions of the material testing machine such as the target pattern of the load, that is, the load conditions for the test piece in the material testing machine.
[0004]
[Problems to be solved by the invention]
By the way, in the procedure for starting the test in the conventional material testing machine as described above, first, it is necessary to read and understand various standard documents. However, reading and understanding such standard documents is an expert. There is also a problem that it is difficult and time-consuming if it is not an engineer. In addition, even when selecting tools necessary for testing such as gripping tools based on the contents of the standard document, it is necessary to have knowledge of the tools. Absent. Furthermore, when setting the load conditions for the material testing machine, not only an engineer who is familiar with the operation of the testing machine is required, but also the operation is difficult and time-consuming, resulting in poor work efficiency. . Furthermore, there is a possibility that an erroneous test is performed due to misrecognition of a standard or an input error when setting a load condition for a testing machine.
[0005]
The present invention has been made in view of such circumstances, so that it is possible to perform a necessary test without understanding various standards, and even a non-specialist engineer, and possible the possibility of performing a wrong test. The purpose is to provide a material testing machine that can be reduced in number.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a material testing machine according to the present invention comprises a load mechanism that applies a load to a test piece, and a material test that includes a drive control unit that drives and controls the load mechanism under a set load condition. In the machine, the test conditions of various standards are stored in advance, the storage means for storing the mounting method of the tool used in each of these standards as image data, the input means for inputting the standard number, and the input means for input The test condition corresponding to the specified standard number is read from the storage means, and based on the content, the load condition is automatically set for the drive control means, and the shape of the test piece defined in the standard this to and including a means for notifying size, and other test conditions, including the need for tools to the operator, and a display means for displaying the mounting method of the necessary equipment in the image data It characterized by.
[0007]
The present invention stores the test conditions in various standards such as JIS, ISO, or ASTM in the material tester itself, reads out the corresponding one by inputting the standard number, and drives the drive control means of the material tester. Items to be set are automatically set, the shape and dimensions of the test piece used in the test, other necessary tools, etc. are notified to the operator by display and voice , and further, the mounting method of the necessary tools is image data. By displaying with, it is intended to achieve the intended purpose.
[0008]
That is, in the material testing machine of the present invention, when the standard number to be tested is input by the input means, the corresponding one is read from the storage means and the load condition is automatically set, so that the operator can set the material testing machine. On the other hand, it is not necessary to perform the setting, and there is no possibility of performing a wrong test due to an operator's misrecognition or operation error.
[0009]
In addition, for the test piece information such as the shape and dimensions of the test piece and the necessary tools such as the gripping tool, the operator may prepare by informing the operator and prompting the preparation thereof. Therefore, since the method for attaching the necessary tool is displayed as image data without reading and understanding the standard document, the preparation work can be easily and correctly performed even by a skilled engineer.
[0010]
In the present invention, it is preferable that the test conditions of various standards stored in the storage means can be rewritten as needed in accordance with the revision of the standards.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a configuration diagram of an embodiment of the present invention, and is a diagram illustrating a schematic diagram showing a mechanical configuration and a block diagram showing an electrical configuration.
[0012]
The testing machine main body 1 has a structure in which two screw rods 12a and 12b are vertically arranged on a table 11, and both ends of the crosshead 13 are supported on the screw rods 12a and 12b via nuts. Have. The screw rods 12 a and 12 b are rotated by a driving device 14, and the driving of the driving device 14 moves the cross head 13 up and down. By approaching / separating the table 11 due to the vertical movement of the cross head 13, a tensile or compressive load is applied to the test piece W attached therebetween. FIG. 1 shows an example in which a tensile test is performed. In this case, a pair of gripping tools 15a and 15b are attached to the table 11 and the cross head 13, and both ends of the test piece W are attached by the gripping tools 15a and 15b. A tensile load is applied to the test piece W by raising the crosshead 13 in the gripped state.
[0013]
The movement of the crosshead 13 is detected by the displacement sensor 16 every moment, and the load acting on the test piece W is detected every moment by the load cell 17. The outputs of the displacement sensor 16 and the load cell 17 are digitized by the A / D converters 22a and 22b via the amplifiers 21a and 21b, respectively, and then taken into the computer 23.
[0014]
The computer 23 uses the above-described displacement data and load data to test specimens under a preset load condition, for example, a load target pattern consisting of load speed control, constant speed control, strain speed control, and the like. In order to apply a load to W, the drive device 14 is feedback-controlled via the DA converter 24.
[0015]
In the storage device 23a of the computer 23, test conditions of various standards relating to material tests such as JIS, ISO, and ASTM, that is, the shape and dimensions of the test piece W, and the test piece W when the test piece W is mounted on the material testing machine. A load condition such as a load pattern for a test piece W, a load pattern for the test piece W, and the like are written. In this example, the storage device 23a also stores in advance image data on how to attach the tool to the material testing machine in accordance with various standards. The contents stored in the storage device 23a are read out according to the following procedure, and items to be notified to the operator are displayed on the display 23c, and the load condition by the drive device 14, that is, the load target. Set the pattern automatically.
[0016]
FIG. 2 is a flowchart showing the operation procedure. First, when the operator inputs a desired standard number from the keyboard 23b, the computer 23 reads out the corresponding one from the storage device 23a, and performs the test with the shape and size of the test piece defined in the standard. A tool such as a gripping tool necessary for hitting is displayed on the display 23c. At the same time, the load condition for the test piece stipulated in the standard, that is, the target pattern of the load to be supplied to the driving device 14 is automatically set to be in a standby state.
[0017]
When the operator prepares a test piece and a tool according to the display on the display unit 23c and inputs the information, the computer 23 then displays the mounting method of the tool on the display unit 23c as image data. According to this display, after the operator wears the tool and attaches the test piece W, the drive device 14 is driven and controlled based on the target pattern of the load that has already been set simply by giving a start command. The test is performed.
[0018]
According to the above embodiment, the operator of the material testing machine does not read the documents described in the standards such as JIS and ISO, and therefore does not understand the contents, and further, how to install the tool. Without knowing, it is possible to automatically perform a test according to the standard simply by inputting the standard number and preparing for the test according to the display on the display 23c.
[0019]
Here, if the standard stored in the storage device 23a can be rewritten at any time, revision of the standard can be dealt with.
[0020]
Further, if the storage device 23a can store the operator's own test conditions that are a little customized for any standard, in addition to various standards, the load can be reduced even when performing an original test different from the standard. There is no need to manually set patterns and the like each time.
[0021]
【The invention's effect】
As described above, according to the present invention, test conditions of various standards such as JIS, ISO, or ASTM are stored in advance, and the corresponding one is read by inputting an arbitrary standard number. Items to be prepared before the test by the operator such as the shape and dimensions of the tool and the necessary tools such as grippers are notified by display etc., and the load conditions such as the target pattern when controlling the load mechanism are automatically Since the setting method is displayed and the necessary tool mounting method is displayed as an image, the operator prepares the tool after reading and understanding the standard document as before, and further sets the load target pattern, etc. This eliminates the need for the operator, greatly reducing the labor of the operator during the test, and allows the test to be performed without knowledge of the standards and tools. In addition, since it is possible to prevent the operator from recognizing and setting errors, the possibility of performing a wrong test can be extremely reduced.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an embodiment of the present invention, and is a diagram illustrating a schematic diagram showing a mechanical configuration and a block diagram showing an electrical configuration.
FIG. 2 is a flowchart showing an operation when performing a test according to a standard according to the embodiment of the present invention;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Test machine main body 11 Table 12a, 12b Screw rod 13 Cross head 14 Driving device 15a, 15b Grasp 16 Displacement sensor 17 Load cell 21a, 21b Amplifier 22a, 22b AD converter 23 Computer 23a Storage device 23b Keyboard 23c Display 24 D-A converter W Test piece

Claims (1)

In a material testing machine equipped with a load mechanism that applies a load to a test piece, and a drive control means that drives and controls the load mechanism under a set load condition.
The test conditions of various standards are stored in advance, the storage means for storing the mounting method of the tools used in each of these standards as image data, the input means for inputting the standard number, and the standard input by the input means The test condition corresponding to the number is read from the storage means, and based on the content, the load condition is automatically set for the drive control means, and the shape and size of the test piece defined in the standard, and comprising means for informing the operator of other test conditions including the need for tools and materials testing machine, characterized by comprising display means for displaying the mounting method of the necessary equipment in the image data.

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