JP4109986B2 - Torque tester - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a torque tester over having a management function, a function as a tester for inspecting the torque setting of the registration to that example a torque wrench or a torque screwdriver, torque tester having a function of managing test results It is about.
[0002]
[Prior art]
As the torque wrench or torque driver, a type in which the torque value can be arbitrarily set or a type in which the torque value is fixed is provided.
[0003]
And the accuracy of the set value of such a torque wrench or torque driver was inspected by a tester. As an inspection method, for example, with the torque set value of the torque wrench set to 10 N · m, the torque wrench is mounted at a predetermined position of the tester, and the lever of the torque wrench is rotated manually or automatically. When the display unit provided in the wrench tester shows the set value of 10 N · m, the torque value displayed on the display unit on the tester side is read or output to the printer, and this value is managed in the bookkeeping system. I was trying to fill in a ledger.
[0004]
In this management ledger, the management number of each torque wrench or torque driver is described, and the inspection result is written together with the inspection date.
[0005]
[Problems to be solved by the invention]
However, manually writing the test result of the tester into the bookkeeping management ledger each time is a very complicated task and may lead to a mistake in entry.
[0006]
On the other hand, it is conceivable that the test results measured by a tester are sent to a personal computer via a wired or wireless communication line, and data processing is performed by the personal computer. In terms of portability, there is also a difficulty in portability.
[0007]
The present invention is intended to solve such a problem, and to provide a torque tester having an easy-to-use management function capable of measuring set torque and managing inspection results with a single unit.
[0008]
[Means for Solving the Problems]
According to a first aspect of the present invention, the torque value generated by the tightening operation of the set tightening tool is measured with a tightening tool such as a torque wrench or torque driver having a preset torque value as a measurement object. A torque value measuring means for measuring, a judging means for determining whether the measured value measured by the torque value measuring means is within an allowable range corresponding to the set torque value set by the tightening tool, and a plurality of tightening Management means for managing tool history and pass / fail judgment results determined by the judgment means, management information including the history and pass / fail judgment results , and measured values measured by the torque value measuring means can be digitally displayed A torque tester in which a display means and a selection means for selecting a display item displayed on the display means are housed in a single housing, the management means , A initial screen with the history display portion of the table format for displaying the subsequent history information in quality of the measurement results, the first display screen is the measurement screen, the subsequent history information in the history display portion of the tabular The display means displays the measured value and displays the history display section on the display means so as to be switchable.
[0009]
According to a second aspect of the present invention, as described in the second aspect, in the first aspect described above, the selection unit is a touch panel provided on a display screen of the display unit.
[0010]
According to a third aspect of the present invention, as described in the third aspect, in the first or second aspect described above, the management information can be transmitted to an external management apparatus via the communication means.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below based on the embodiment shown in FIGS.
[0012]
FIG. 1 is an electric block diagram showing the overall configuration of the torque tester, in particular, a circuit configuration for measuring the torque value, and FIG. 2 is a set value of a torque wrench, torque driver, etc. comprising a touch panel provided on the display unit of FIG. It is a block diagram of a circuit configuration for managing relationships such as measured values.
[0013]
In FIG. 1, reference numeral 1 denotes a gauge input portion of a torque tester, which includes four strain gauges attached to a fitting portion (not shown) to which a socket attached to a set torque wrench (not shown) is fitted. It is assembled in a bridge circuit, and the fitted portion is fixed to the tester main body. When the handle portion of the torque wrench for measuring the set torque value is rotated, the screw generated in the fitted portion is The strain gauge detects distortion due to twisting, and a signal corresponding to the torque is arithmetically processed by the CPU 5 that controls the entire tester via the amplifier 3 and the A / D converter 4 assembled to the CPU board 2, and the display unit 6 is displayed.
[0014]
Further, communication between the CPU 5 and an external device can be performed via the interface 8. Further, the power supply to the gauge input unit 1 and each element of the CPU board 2 is performed by a switching power source 7, and the fitted part, the CPU board 2, the display unit 6 and the switching power source 7 are exterior parts of a tester (not shown). It is stored in a case.
[0015]
2, 9 is a touch panel, which is attached to the display surface of the display unit 6 shown in FIG. Information on the touch panel 9 is input to the management CPU 11 via the touch panel controller 10.
[0016]
The management CPU 11 controls the display unit 6 that is a liquid crystal panel by an LCD controller 12 that is configured by a liquid crystal panel.
[0017]
In addition, the management CPU 11 is connected to a kanji screen flash ROM 14 and a data storage SRAM 15 to enable kanji screen display.
[0018]
Further, the liquid crystal display panel 6 is driven by a driver 6 a and an H driver 6 b, and the backlight 6 c is controlled by an inverter 13. The management CPU 11 is connected to the CPU 5 via a serial data bus 11a.
[0019]
An initial screen shown in FIG. 3 is prepared in the flash memory 14, and this initial screen is displayed on the display unit 6 when the power (not shown) in the tester of the present embodiment is turned on.
[0020]
The initial screen shown in FIG. 3 is also a measurement screen, and when the torque display reaches a preset torque value by rotating the measurement display unit 20 and torque wrench displayed in N · m, for example, the tightening is stopped by the operation of the toggle mechanism. In the case of the type torque wrench, the tightening torque immediately before the operation becomes maximum, so that the measurement mode display unit 21 that displays the peak hold or the like as the measurement mode in such a case, or the enlarged screen of the measurement value table is displayed. A measurement value table indicating unit 22 for indicating whether or not, a model data display unit 23 for displaying a model of a torque wrench or torque driver to be measured, and a management number data display unit for displaying a management number of a torque wrench or torque driver to be measured 24, a tool type display unit 25 for displaying the type of a tool to be measured, a management source number display unit 26 for displaying a management source number as a serial number, and management Decrease instruction display unit 27 for performing an increase or decrease in number, the history display section 28 for displaying the history of the measured tool in tabular form as shown in FIG. 3, is displayed.
[0021]
Further, a memory display unit 29 for instructing saving of measured values as a function display unit, a data transmission display unit 30 for instructing transmission of measurement data or history data, a setting display unit 31 for instructing switching of display screens, and an end instruction An end display unit 32 is displayed.
[0022]
In a state where the initial screen shown in FIG. 3 is displayed, the touch panel 9 functions as a switch unit corresponding to the memory display unit 29, the data transmission display unit 30, the setting display unit 31, and the end display unit 32. In addition, a switch unit corresponding to the measurement mode display unit 21, the measurement value table instruction unit 22, and the increase / decrease instruction display unit 27 also functions.
[0023]
Calling up when measuring a torque wrench that has already been registered can be performed by pressing the increase / decrease switch unit to display a desired management source number if the management source number is known, or by pressing the setting display unit 31 of the touch panel 9. 5 is displayed.
[0024]
Also, when newly registering, the data input screen of FIG. 5 is displayed by pressing the touch panel 9 corresponding to the setting display unit 31.
[0025]
The following display section is displayed on the data input screen shown in FIG.
[0026]
An instruction unit 23a for instructing input of format data to the format data display unit 23, an instruction unit 24a for instructing input of management number data to the management number data display unit 24, the format data display unit 23, and the management number data display unit 24 The increase / decrease instruction display units 23b and 24b, the numeric keypad display unit 33, and the alphabet display unit 34 for increasing / decreasing, respectively, are displayed. In addition, display units 35, 36, and 37 for instructing change, deletion, and insertion of input data are displayed.
[0027]
This data input screen is also a new registration screen. By pressing the touch panel 9 corresponding to the instruction unit 23a for the model data and the instruction unit 24a for the management number data, the numeric keypad display unit 33 and the alphabet are displayed. By pressing the touch panel 9 on the display unit 34, data can be input manually.
[0028]
Here, in the case of new registration, when the input of necessary data is completed, the registration is completed by pressing the touch panel 9 corresponding to the registration display unit 38, and the management number is used to call the registered torque wrench. A management number, which is a management number unique to the torque wrench, is input to the display unit 24 by pressing the touch panel 9 on the numeric keypad display unit 33 and the alphabet display unit 34, and displayed on the measurement screen. When 9 is pressed, the initial screen shown in FIG. 3 is restored, and the set torque can be measured. At this time, the type of the called torque wrench is also displayed on the model data display unit 23, and the number is also displayed on the management source number display unit 26.
[0029]
In the measurement screen, which is the initial screen shown in FIG. 3, the history display unit 28 is formed in a table so that a plurality of measurement results (indicated by 10, 50, 100 in the figure) can be determined for a plurality of measurement results. If the torque value to be measured by the torque tester is selected with a selection switch (not shown) or the like, the selected torque value, for example, 50 N · m, is measured for the third time. “Meg” is displayed. Then, when the torque value is measured in the peak hold mode, the CPU 5 calculates whether or not the measured value for 50 N · m set by the torque wrench is within the allowable range, and the “Meg” in the corresponding frame is calculated. "Is switched to" OK "if it is within the allowable range, and" NG "if it is outside the allowable range.
[0030]
When the measurement result is stored, when the touch switch 9 corresponding to the memory display unit 29 is pressed, the measurement result is stored in the memory 15. The data stored together with the measurement value includes the measurement date and time, the measurer, the measurement environment (temperature, humidity), and the like. The date of registration is also stored. These data can also be displayed.
[0031]
In the initial screen shown in FIG. 3, since the history display unit 28 is a small space in relation to other displays, only the pass / fail judgment results are displayed. When actual measurement data is to be displayed, When a corresponding part is pressed on the measurement value table instruction unit 22 on the touch panel 9, an enlarged history display unit 40 is displayed as shown in FIG. 4, and the measurement value is displayed in each frame.
[0032]
As described above, the history display unit 28 displays only the determination result of whether or not the set torque value of the torque wrench is within the allowable error range during the torque measurement, and switches to the display screen shown in FIG. Since the detailed measurement data is displayed on the history display unit 40, it is usually possible to determine whether or not the torque wrench can be used continuously only by looking at the display of the history display unit 28 shown in FIG. Then, by switching to the display screen of the history display unit 40 shown in FIG. 4, for example, the characteristics of individual torque wrench, the degree of error, and the like can be confirmed from the past measurement values of the torque wrench.
[0033]
In addition, since the tester is a dedicated device with a function that can display the history, it is not necessary to prepare a personal computer separately, and it is portable without requiring installation space.
[0034]
Although the above embodiment has shown an example of measuring the torque value of a torque wrench, the torque tester of the present invention is not limited to a torque wrench, and the torque value of a torque driver or the like is preliminarily determined. It can be applied to the set tightening tool.
[0035]
In addition, new registration to the torque tester can be made with the management number, model, etc. of the torque wrench of the customer registered in advance, for example, at the time of delivery to the customer, and the torque tester can be registered using the Internet. You may make it register the management number, model, etc., such as a torque wrench purchased after delivery.
[0036]
Furthermore, the torque tester on the customer side and the delivery side of the torque tester can communicate with each other via the Internet, and the torque wrench determined to have a short life on the delivery side is notified before the pass / fail judgment is judged as “No”. May be.
[0037]
【The invention's effect】
As described above, according to the present invention, on the first screen, during the torque measurement, for example, a determination result as to whether the set torque value of the torque wrench is within the allowable error range is displayed. Since the detailed history of measurement data can be displayed on the second screen, it is usually possible to determine whether or not the torque wrench can be used continuously only by looking at the first screen. By switching to the second screen, for example, the characteristics of individual torque wrench, the degree of error, and the like can be confirmed from past measured values of the torque wrench.
[0038]
In addition, since the torque tester is a dedicated device with a function that can display the history, it is not necessary to prepare a personal computer separately, and it is easy to port without requiring installation space.
[0039]
Further, by enabling communication between the customer-side torque tester and the torque tester delivery side via a communication line, for example, for a torque wrench that has been determined to have a short life on the delivery side, the pass / fail judgment is determined as “No”. The effect of being able to be notified is obtained.
[Brief description of the drawings]
FIG. 1 is an electric block diagram showing a circuit configuration for measuring a torque value of a torque tester according to an embodiment of the present invention.
2 is a block diagram of a circuit configuration for managing a relationship between a set value and a measured value of a torque wrench, a torque driver, or the like including a touch panel provided in the display unit of FIG.
FIG. 3 is a diagram showing an initial screen in the display unit of FIGS.
4 is a diagram showing an enlarged display screen of a history display unit in FIG. 3;
FIG. 5 is a diagram showing an input display screen in the display unit of FIGS.
[Explanation of symbols]
1 Gauge Input Unit 2 CPU Board 3 Amplifier 4 A / D Converter 5 CPU
6 Display unit 6a Driver 6b H driver 6c Backlight 7 Switching power supply 8 Interface 9 Touch panel 10 Touch panel controller 11 Management CPU 11a Serial data bus 12 LCD controller 13 Inverter 14 Flash ROM
15 SRAM
DESCRIPTION OF SYMBOLS 20 Measurement display part 21 Measurement mode display part 22 Measurement value table instruction | indication part 23 Model data display part 24 Management number data display part 25 Tool type display part 26 Management source number display part 27 Increase / decrease instruction display part 28 History display part 29 Memory display part 30 Data transmission display section 31 Setting display section 32 End display section 33 Numeric keypad display section 34 Alphabet display section 35 Data change instruction display section 36 Data deletion instruction display section 37 Data insertion instruction display section 38 Registration display section 39 Measurement screen transition 40 History display Part

Claims (3)

A torque value measuring means for measuring a torque value generated by a tightening operation of the set tightening tool, and a setting set by the tightening tool, with a tightening tool such as a torque wrench or a torque driver having a preset torque value as a measurement target Corresponding to the torque value, determination means for determining whether or not the measured value measured by the torque value measuring means is within an allowable range, a history of a plurality of tightening tools, and the determination result of the quality determined by the determination means Management means for managing the history, management information including the history and pass / fail judgment results , display means capable of digitally displaying the measured values measured by the torque value measuring means, and display items displayed on the display means A torque tester that houses a selection means for selecting a single housing,
The management means is an initial screen provided with a tabular history display section that displays the history information according to the quality of the measurement results, and includes a first display screen that is a measurement screen and a tabular history display section. A torque tester characterized in that the history information is displayed as a measured value , and a second display screen for enlarging and displaying the history display section is displayed on the display means in a switchable manner.   The torque tester according to claim 1, wherein the selection unit is a touch panel provided on a display screen of the display unit.   The torque tester according to claim 1 or 2, wherein the management information can be transmitted to an external management device via a communication means.

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