JP2002250682A - Material testing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a required material testing to be carried out even by a person other than an expert engineer, without the need for understanding the standards, and to reduce the possibility of incorrect execution in the test as reduced as possible, when the material testings are carried out pursunat to various standards. SOLUTION: Test conditions for the various standards are stored preliminarily in a memory 23a, an optional specification number is input by an input means 23b, a corresponding standard is read out from the memory 23a, a load condition is automatically set to a drive control means (14 and the like) according to a content thereof, a required tool in the test is displayed on a display 23c or likely to be notified to an operator, and if the operator inputs only the standard number to conduct the correct testing, without knowing the content of the standard in this manner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a material testing machine.

[0002]

2. Description of the Related Art Generally, in a material testing machine, a load mechanism is driven to apply a load to a test piece, and at the same time, the magnitude of the load and the elongation of the test piece are measured by a load cell or an extensometer.

[0003] Regarding the test conditions in the material test, for example, how to load, the shape and dimensions of the test piece, how to grip the test piece, etc., JIS, ISO, or ASTM
Such standards are defined, and when conducting a material test in accordance with such standards, usually, the operator first,
Read the document of the standard, and select and prepare a test piece of the shape and dimensions necessary for the test and a tool such as a gripper for gripping the test piece according to the description. The test is started after 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 are manually set in the material testing machine.

[0004]

In the procedure for starting a test in a conventional material testing machine as described above, it is necessary to first read and understand various standard documents. It is difficult to read and understand it unless you are a professional engineer, and there is also a problem that it takes time and effort. In addition, even when selecting tools necessary for testing grippers etc. based on the contents of the standard document,
It is necessary to have knowledge of equipment, and this is also not easy unless a skilled technician. Furthermore, when setting the load conditions for the material testing machine, not only is a technician familiar with the operation of the testing machine necessary, but also the operation is difficult and time-consuming, resulting in poor work efficiency. . Furthermore, misrecognition of standards,
There is a possibility that an incorrect test may be performed due to an input error or the like when setting the load conditions for the test machine.

[0005] The present invention has been made in view of such circumstances, and it is possible to perform a required test without having to understand various standards, even if a non-technical engineer, and to perform an incorrect test. It is an object of the present invention to provide a material testing machine capable of minimizing the number of materials.

[0006]

In order to achieve the above object, a material testing machine according to the present invention comprises: a load mechanism for applying a load to a test piece; and a drive control device for controlling the load mechanism under a set load condition. In a material testing machine provided with drive control means
Storage means for storing test conditions of various standards in advance;
An input unit for inputting a standard number, and a test condition corresponding to the standard number input by the input unit are read out from the storage unit, and based on the contents, a load condition is automatically transmitted to the drive control unit. And a means for notifying the operator of other test conditions including necessary tools and test piece information.

[0007] The present invention is based on the JIS or IS
The test conditions in various standards such as O or ASTM are stored, and the corresponding ones are read out by inputting the standard number, and those to be set for the drive control means of the material testing machine are automatically set. The necessary tools and the like are intended to achieve the intended purpose by notifying the operator by display or voice.

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 number is read out from the storage means and the load condition is automatically set. This eliminates the need to perform the setting for the test machine, and eliminates the possibility of performing an erroneous test due to an erroneous recognition or an operation error of the operator.

[0009] In addition, the operator informs the operator of test piece information such as the shape and dimensions of the test piece and the necessary tools such as gripping tools and prompts the operator to prepare the test piece, so that the operator prepares according to the contents of the notification. Therefore, the preparation work can be easily performed correctly without reading and understanding the standard document, and therefore, even without a skilled technician.

In the present invention, it is preferable that the test conditions of various standards stored in the storage means can be rewritten at any time in response to the revision of the standards.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of an embodiment of the present invention, in which a schematic diagram showing a mechanical configuration and a block diagram showing an electrical configuration are shown together.

In the tester main body 1, two screw rods 12a and 12b are vertically arranged on a table 11, and both ends of a crosshead 13 are supported on the screw rods 12a and 12b via nuts. It has the following structure. The screw rods 12a and 12b are rotated by a driving device 14, and the driving of the driving device 14 causes the crosshead 1 to rotate.
3 moves up and down. This crosshead 1
Due to the approach / separation from the table 11 due to the vertical movement of 3, 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 grippers 15a and 15b are mounted on the table 11 and the crosshead 13, and both ends of the test piece W are held by the grippers 15a and 15b. By raising the crosshead 13 in the gripped state, a tensile load is applied to the test piece W.

The movement of the crosshead 13 is performed by a displacement sensor 16.
, And the load acting on the test piece W is detected every moment by the load cell 17. Outputs of the displacement sensor 16 and the load cell 17 are digitized by A / D converters 22a and 22b via amplifiers 21a and 21b, respectively, and then taken into a computer 23.

The computer 23 uses the above-mentioned displacement data and load data to obtain a predetermined load condition, for example, a load target pattern consisting of load speed control, constant speed control, or strain speed control. In order to apply a load to the test piece W, the DA converter 24
The feedback control of the drive device 14 is carried out via the.

Now, the storage device 23a of the computer 23
The test conditions of various standards related to material tests such as JIS, ISO, ASTM, etc., that is, the shape and dimensions of the test piece W, tools such as grippers when the test piece W is mounted on the material testing machine, and test conditions A load condition including a load pattern for the piece W is written. Also,
In this example, the storage device 23a also stores in advance image data on the method of mounting tools to the material testing machine according to 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. Set the pattern automatically.

FIG. 2 is a flowchart showing the operation procedure. First, the operator inputs a desired standard number to the keyboard 2.
3b, the computer 23 becomes the storage device 23
The corresponding one is read out of the data a, and the shape and dimensions of the test piece specified in the standard and tools such as gripping tools necessary for performing the test are displayed on the display 23c.
At the same time, the load condition for the test piece specified 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.

When the operator prepares the test piece and the tool according to the display on the display 23c and inputs the fact, the computer 23 displays the mounting method of the tool on the display 23c as image data. According to this display, when the operator wears the tool and mounts the test piece W, the drive device 14 is driven and controlled based on the preset load target pattern only by giving a start command thereafter. ,
The test is performed.

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, mounts the tools. Even if the user does not know the method or the like, the test can be automatically performed in accordance with the standard only by inputting the standard number and preparing the test according to the display on the display 23c.

Here, the standard stored in the storage device 23a can cope with revision of the standard if its contents can be rewritten at any time.

In addition, if the storage device 23a can store operator-specific test conditions, which are slightly customized from arbitrary standards, separately from various standards, it can be used when performing an original test different from the standards. This also eliminates the need to manually set the load pattern and the like each time.

[0021]

As described above, according to the present invention, the JIS
The test conditions of various standards such as ISO, ISO, and ASTM are stored in advance, and the corresponding items are read out by inputting an arbitrary standard number, and the shape and dimensions of the test piece and necessary tools such as gripping tools are used. The operator is notified by a display etc. of items to be facilitated before the test, and the load conditions such as the target pattern when controlling the load mechanism are automatically set. However, it is not necessary to prepare tools and the like after reading and understanding the standard document, and furthermore, it is not necessary to set the target pattern of the load and the like. Testing can be performed without knowledge of the equipment. Further, since it is possible to prevent erroneous recognition of the operator, erroneous setting, and the like, the possibility of performing an erroneous test can be extremely reduced.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention, in which a schematic diagram showing a mechanical configuration and a block diagram showing an electrical configuration are shown together.

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 Tester main body 11 Table 12a, 12b Screw rod 13 Cross head 14 Drive device 15a, 15b Gripping tool 16 Displacement sensor 17 Load cell 21a, 21b Amplifier 22a, 22b A / D converter 23 Computer 23a Storage device 23b Keyboard 23c Display 24 DA converter W test piece

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kawa ▲ saki ▼ Takeshi F-term in Shimadzu Corporation, No. 1 Nishinokyo Kuwaharacho, Nakagyo-ku, Kyoto 2G061 AA01 AA02 DA03 EA01 EA02 EB05

Claims (1)

[Claims] 1. A material testing machine comprising a load mechanism for applying a load to a test piece and drive control means for driving and controlling the load mechanism under set load conditions, wherein test conditions of various standards are stored in advance. Storage means for performing
An input unit for inputting a standard number, and a test condition corresponding to the standard number input by the input unit are read out from the storage unit. Based on the contents, a load condition is automatically transmitted to the drive control unit. And a means for notifying an operator of other test conditions including necessary tools and test piece information.