JP2594755Y2 - Material testing machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention displays a load value during measurement, and displays a maximum load value, a scale value associated with range switching, a read value per scale, and the like. The present invention relates to a material testing machine provided with a load indicating device that can easily display the information. 2. Description of the Related Art For example, a pointer type digital display type and a digital type load display device of a material testing machine for performing a tensile test, a compression test, a bending test and the like are used. . FIG. 4 shows a conventional pointer-type load indicator 20.
A pointer 21 for indicating a load value currently being measured and a pointer (hereinafter, referred to as a “needle”) 22 for indicating the maximum value of the load value are provided for the scale plate 23. The pointer 22 is semi-fixed by a spring or the like, and the pointer 22 is rotated by a pointer 21 that moves in proportion to the applied load.When the pointer 21 rotates in the opposite direction when the load decreases, the pointer 22 has a maximum load value. Stop in the state indicating The range displayed by the hands 21 and 22 is switched by the range switching knob 5. FIG. 5 shows a conventional digital load indicator 30, in which the present value of the load is displayed on a digital display section 31,
The maximum load value is displayed on the digital display 32. The range switching is performed by a push button type range switching unit 33. [0005] In the above-mentioned pointer indicator of the analog display, the pointer is set in a semi-fixed state by a spring and the like.
Since the movement is performed by using the friction with one of the hands, there is a problem that an instruction error due to the friction is inevitable. In addition, when the current measurement is completed and the next measurement is performed, the pointer must be returned to the vicinity of another pointer in the opposite direction to the load instruction by manual operation every time,
If this return operation is forgotten, the maximum load value at the next measurement cannot be read. In addition, there is a problem that there is an individual difference in reading the pointer. [0006] The digital indicator does not cause the above-mentioned problems in the pointer type, but the load level cannot be confirmed in an analog sense by visually observing the advance and the remaining degree of the pointer with respect to the full scale as in the pointer type. . In addition, since there is no sense of speed of the load corresponding to the speed at which the pointer advances or a sense of smoothness to which the load is applied, it is inconvenient to operate the load, and operation problems such as the need to check by combining an XY recorder or the like. was there. In the indicating device of the material testing machine, the range is switched, but it is difficult to determine the read value per scale just by switching the display of the scale value. Therefore, an object of the present invention is to provide a material testing machine which can perform a test like an analog feeling, can accurately read a load value without individual difference, and has excellent operability. [0007] In order to solve the above problems, the present invention employs the following configuration. That is, the material testing machine according to the present invention comprises:
A material testing machine including a load display device that displays a load value detected by a detector, wherein the load indicating device includes:
It has a pointer type indicator for indicating the detected load value in an analog manner, a digital load display unit for indicating the detected load value as a digital value, and a digital maximum load display unit for displaying the maximum load value. The pointer-type indicator has a digital display unit for displaying a scale value on a scale plate when the range is switched, and a digital display unit for displaying a read value per scale on the scale plate as a digital value in response to the range change. 1
And a scale value display section, and the digital load display section and the digital maximum load display section are arranged in the pointer type indicator. FIG. 1 is a perspective view showing the structure of a material testing machine provided with a load indicating device according to an embodiment of the present invention. A machine base box and the like in which a hydraulic pressure generating source for sending pressure oil to a load device installed in the main body 1 is arranged in parallel with the main body 1 of the material testing machine. The machine box 5 further includes a load control device 3 for performing hydraulic control, a load speed control device 4 for performing load speed control, and a load indicating device 2 for indicating a measured load value. FIG. 2 is a view showing the structure of a load indicating device 2 which is a main part of an embodiment of the present invention. On the indicating surface, a load indicator for indicating a load value currently being measured to a scale plate 7 is shown. 8, a digital display unit 9 for indicating the present value being measured by a digital value, a digital display unit 10 for indicating the maximum load value by a digital value, and a scale plate 7 switched by an instruction from the key range switching unit 14. A digital display unit 12 for displaying a read value per scale as a digital value and a digital display unit 13 for displaying a scale value on a scale plate in accordance with range switching are provided. Since the measurement value currently being measured is indicated by the load pointer 8, the test can proceed smoothly by grasping the moving speed of the load pointer 8 and the position with respect to the full scale in an analog sense. At the same time, since the current value is displayed on the digital display section 9, the load value can be accurately confirmed without an error in reading the hands. Since the maximum load value is held and displayed separately on the digital display unit 10 when the test piece breaks, etc., there is no error caused by friction caused by the needle holder as in the related art. The maximum value can be read accurately without individual differences in reading. The reason why the scale value and the read value per scale when the range is switched is digitally displayed is to make it possible to immediately and easily determine the scale value and the read value per scale by the range switch. FIG. 3 is an enlarged view of the scale plate 7 and shows an example in which specific values are displayed on each display unit. In the above embodiment, each digital display is installed on a horizontal line passing through the axis of the pointer in the scale plate. However, if it is installed in a convenient place for operation and visual confirmation according to the structure of each model. Good. A digital display can be placed outside the analog display area. As is clear from the above description, the material testing machine according to the present invention has the advantages of the analog display method which exhibits excellent functions in the operation of the testing machine and the accurate digital display method. With a load indicating device that demonstrates the advantages of the above, it has excellent operational feeling and can accurately measure the yield point and the maximum load value, which are indispensable measurement items in material testing. When the operation is returned manually, the complicated operation performed becomes unnecessary, and the test can be performed efficiently. Further, since both digital displays are provided for displaying the scale value and the read value per scale when the range is changed, the scale on the scale plate is always maintained even if the range is changed at any time in the test operation. The values and the read values per scale can be accurately and immediately determined without being affected by individual differences. Furthermore, since the digital display of the present value and the maximum value of the load is arranged in the pointer-type indicator, the pointer and the digital display, which are the analog display, can be easily visually checked at the same time for easy confirmation.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a configuration of a material testing machine provided with a load indicating device according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a configuration of a load indicating device. FIG. 3 is an enlarged view of a main part. FIG. 4 is a diagram showing a conventional pointing device. FIG. 5 is a diagram showing a conventional pointing device. [Explanation of Signs] 2 ... Load indicating device 7 ... Scale plate 8 ... Load indicator 9 ... Digital display (current value) 10 ... Digital display (maximum value)

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Keiji Shigesawa 1 Shiino Nishi Goshoda-cho, Kita-ku, Kyoto Shimazu Works Inside the Shiino Plant (72) Inventor Shinichi Takada 1 Shiono Nishi-Goshoda-cho, Kita-ku, Kyoto-shi Address Co., Ltd. Shimanzu Seisakusho's Shino Plant (72) Inventor Hitoshi Hiraki 1 Shinozu Nishigoshoda-cho, Kita-ku, Kyoto-shi Shimadzu Seisakusho's Shiono Plant (56) References Real Opening Sho53-45048 (JP, U) 58-47994 (JP, U) Jiko 7-42118 (JP, Y2) (58) Fields investigated (Int. Cl. ⁶ , DB name) G01N 3/00-3/62

Claims (1)

(57) [Rules for requesting registration of utility model] A material testing machine including a load display device that displays a load value detected by a detector, wherein the load indicating device includes a pointer-type indicator that indicates a detected load value in an analog manner, A digital load display unit for indicating a load value by a digital value, and a digital maximum load display unit for displaying a maximum load value are provided. A digital type display unit for displaying a read value per scale on the scale plate as a digital value in response to range switching, and a digital load display unit; A material testing machine, wherein a maximum load display section is arranged in the pointer type indicator.