JPH0587595A - Measured value indicator for material testing machine - Google Patents

Abstract

PURPOSE:To obtain an indicator having a small size and light weight indication mechanism and capable of switching the indication between needle type and graph type depending on the testing work and test items. CONSTITUTION:Provided for indicator of measured value are a liquid crystal indicator 7, needle type indicator drive circuit 19 to indicate test measurement value with a needle on an indicator in a liquid crystal drive circuit, a graph type indicator drive circuit 20 to indicate the test measurement value on a graph in an indicator and a switch mechanism to switch each of indicator drive circuit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a measurement value display device for displaying a test measurement value by a material test on a liquid crystal display.

[0002]

2. Description of the Related Art Conventionally, as a test measured value display device based on this kind of material test, what is displayed by a pointer type on a so-called load gauge, and recently what is displayed by a CRT is widely used.

[0003]

The pointer-type measured value display device has the advantage that the operator can visually read the measured value such as the load and smoothly carry out the test control in operation. It is necessary to convert the measured value such as load into this rotation amount. Therefore, there is a problem in that the structure of the load measuring machine is complicated and a failure is likely to occur. On the other hand, the device displayed on the CRT does not have a mechanical part such as converting the measured value into this rotation amount and has a good system, but there is a problem that the device is heavy and the cost is increased due to the increase in size.

The present invention provides a measurement value display device in a material testing machine which solves such problems.

[0005]

The present invention uses a liquid crystal display as a measurement value display device.

In the apparatus provided by the present invention, the pointer is displayed on the liquid crystal drive circuit on the display and the pointer type display drive circuit for displaying the test measurement value on the pointer and the graph is displayed on the display. It is provided with a graph type display drive circuit for displaying the test measurement values in a graph and a switching mechanism for switching between the both display drive circuits.

[0007]

The liquid crystal display is small and lightweight, has no mechanical parts, and can be easily switched between the pointer display and the graph display.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. 1 and 2 are perspective views showing the overall appearance of a measured value display device in a material testing machine according to the present invention. The material testing machine of FIG. 2 is an example in which the present invention is carried out, and the material testing machine of FIG. 2 is a so-called electric measuring material testing machine in which a load test is carried out by a screw feed type and measured by a load meter. Shows. In the case of a universal testing machine, the machine base 1 has a built-in load cylinder, and the upper and lower crossheads 2,
The test piece 4 is loaded by expanding and contracting 3 intervals. The load value is transmitted to the force gauge 6 through the transmission pipe 8, converted into an electric signal, and not displayed on the display 7. In the case of the electric measurement type material testing machine, the electric signal from the load meter 5 is directly transmitted to the force gauge 6 and displayed on the display unit 7.
However, the indicator 7 of the electrical measuring material testing machine shown in FIG. 2 has an open / close lid shape, and can be closed with a lid when not in use.

The present invention is basically characterized in that the display 7 is a liquid crystal type display composed of liquid crystal. Therefore, this indicator 7 does not have a conventional pointer.

The liquid crystal type display 7 can display in the form of a graph as shown in FIG.
As shown in the figure, the load can also be displayed by a pointer. Switching between the graph type display and the pointer type display is performed by the electric circuit shown in FIG. That is, the electric signal from the load meter 5 is directly introduced into the force gauge 6, but A /
It is D-converted and input to the computer CPU. Then, the output signal is input to the control circuit 18. Control circuit 1
The output signal inputted to 8 is controlled by an instruction from the operation switch group 8 or the control switch group 9 and is inputted to either the pointer type display drive circuit 19 or the graph type display drive circuit 20, and the liquid crystal type display 7 Is displayed in. The operation switch group 8 is used to switch whether to input the electric signal from the load meter 5 to the pointer type display drive circuit 19 or the graph type display drive circuit 20.
The pointer type display switch 16 and the graph type display switch 17 in FIG.

By the way, in the case of the graphic display, as shown in FIG. 3, the graph 10 is displayed so as to extend from the origin of the vertical axis Y and the horizontal axis XK, but a particularly important portion (area of a specific portion).
11 can be enlarged and displayed in the right zone. 12 is an enlarged view thereof. The setting of this important portion (area) 11 is performed by the cursor adjustment switch 15. By the way, display 7
The test stress value is displayed on the vertical axis Y, and the graph 10 showing the test strain value is displayed on the horizontal axis X, and the test measured values YP, A measured value display drive circuit for displaying XP is provided in the control circuit 18. In FIG. 3, reference numeral 13 is a high yield point and 14 is a low yield point digitally. The control switch group 9 is provided with a large number of switches for control as a material tester, but since these are not different from the conventional ones, detailed description thereof will be omitted. FIG. 4 shows a display example of the pointer type. The pointer T and the surrounding scale M are also displayed on the liquid crystal, and these displays are performed by the pointer type display drive circuit 19.

[0012]

As has been described above, the present invention provides a display device which can have a very simple structure and which is small, lightweight and inexpensive. Further, there is an advantage that both the display of the pointer type table and the display of the graph type can be switched and realized, and either one can be displayed according to the test work or the test content. Furthermore, in the case of a graph type display, a specific graph can be enlarged and the measured values can be displayed on the vertical and horizontal axes, providing a measured value display device in a material testing machine that facilitates observation and has good test operability. To do.

[Brief description of drawings]

FIG. 1 is a perspective view showing an appearance of a measured value display device according to the present invention.

FIG. 2 is a perspective view showing an appearance of a measured value display device according to the present invention.

FIG. 3 is a perspective view showing a force gauge equipped with a measured value display device according to the present invention.

FIG. 4 is a perspective view showing a force gauge equipped with a measured value display device according to the present invention.

FIG. 5 is a diagram showing a drive electric circuit of the measured value display device according to the present invention.

[Explanation of symbols]

 1 ... Machine stand 2 ... Upper crosshead 3 ... Lower crosshead 4 ... Test piece 5 ... Load meter 6 ... Manometer 7 ... Liquid crystal display 8 ... Operation switch group 9 ... Control switch group 10 ... Graph 11 ... Specific portion 12 ... Enlarged graph 15 ... Cursor adjustment switch 16 ... Pointer type display switch 17 ... Graph type display switch 18 ... Control circuit 19 ... Pointer type display drive circuit 20 ... Graph type display drive circuit

Claims (1)

[Claims] 1. A display device in which a test measurement value of a material test is input to a drive circuit for displaying on a liquid crystal display, and the test measurement value is displayed on the liquid crystal display. The indicator displays a pointer on the display and the pointer type display for displaying the test measured value with the pointer.The drive circuit, and the graph display for displaying the graph on the display to display the test measured value on the graph. A measurement value display device in a material testing machine, comprising: a drive circuit and a switching mechanism for switching between the both display drive circuits.