TWI879642B - Torque tool with automatic compensation value conversion - Google Patents

Abstract

The invention relates to a torque tool with automatic compensation value conversion, which includes a body and a measurement device. One end of the body is provided with a drive head. The measurement device is connected to the body and is capable of measuring the torque of the drive head to obtain a measured torque value. The measurement device is provided with a control panel that includes a display and a setting button. In a correction mode, the display shows the measured torque value, and pressing the setting button allows the input of a standard torque value. The measurement device can calculate a first compensation ratio. In a working mode, the measurement device can measure the torque of the drive head and display a compensation torque value on the display. The compensation torque value is the product of the measured torque value and the first compensation ratio. This structure allows the torque tool to automatically calculate the compensation value through the system.

Description

Torque tool with automatic conversion compensation value

The present invention mainly discloses a torque tool, in particular a torque tool capable of automatically converting compensation values.

In the current technical field of hand tools, torque wrenches are widely used in the assembly or maintenance of precision machinery, and torque wrenches are mainly divided into mechanical torque wrenches and digital torque wrenches. The principle of a mechanical torque wrench is that there is a trip mechanism inside the wrench. The trip mechanism can trip when the wrench outputs the target torque, so that the wrench no longer outputs torque. The digital torque wrench uses a strain gauge, which measures the strain of the wrench and converts it into a torque value. The torque value is output through an electronic panel, and it can also remind the user to output the torque of the wrench to achieve the target torque by making a sound or vibrating.

As a tool that strives for accurate torque output, the torque output of the torque wrench must be tested regularly to see if it is accurate. Generally, a torque tester is used for testing. The torque tester can be used with any torque wrench. The torque wrench outputs torque to the torque tester. The torque tester can measure and display the correct torque value. The user can compare the torque value displayed by the torque tester with the torque or value when the mechanical torque wrench trips. The torque displayed by the mechanical torque wrench can be seen from the torque displayed by the digital torque wrench, but the torque tester can only provide the detection error but cannot make correction adjustments. If the torque when the mechanical torque wrench trips is too different from the torque value displayed by the torque tester, the adjustment screw must be turned to calibrate the mechanical torque wrench. However, the digital torque wrench does not have the above adjustment mechanism. If the error is too large, it can only be sent back to the original factory for repair or use a special calibration instrument.

Please refer to the patent case of "Electronic Torque Tool Calibration Device" of Taiwan Patent No. M497080, which is a torque tool calibration device, which includes: a test part plugged into the electronic torque tool, one end of which is concavely provided with a test slot, and the test slot is sleeved on the driving part of the electronic torque tool; a driving handle, one end of which is connected to the opposite end of the test part with the test slot, and a transmission unit signal is provided on the driving handle. The signal is connected to the electronic instrument panel of the electronic torque tool, and a signal conversion unit and a comparison unit are arranged in the driving handle. The signal conversion unit converts the actual torque value between the electronic torque tool and the tested part and transmits it to the comparison unit, and the comparison unit compares the converted actual torque value with the value of the electronic instrument panel of the electronic torque tool, and further calibrates the value in the electronic instrument panel of the electronic torque tool to match the actual torque value.

The reason why digital torque wrenches need to be sent back to the manufacturer for inspection or use a special calibration instrument is that in order to change the calculation parameters of the electronic torque tool's measurement system, the digital torque wrench must be connected to the computer or calibration instrument with a signal cable. For ordinary consumers or operators who lack calibration instruments, this cannot be done by themselves.

In view of the defects of the above-mentioned known structure, the inventor has designed a torque tool that automatically converts the compensation value, which can overcome all the defects of the above-mentioned known structure.

The main purpose of the torque tool for automatically converting compensation value of the present invention is to provide a torque tool including a body and a measuring device, wherein a driving head is arranged at one end of the body, and the measuring device is connected to the body. The measuring device can measure the torque of the driving head and obtain a measured torque value. The measuring device is provided with a control panel, and the control panel is provided with a display, a mode button and a setting button. Pressing the mode button can switch the measuring device from the working mode to the correction mode and display the measured torque value on the display. , and by pressing the setting button, a standard torque value can be input. The measuring device can calculate a first compensation ratio using the measured torque value and the standard torque value as parameters. The value of the first compensation ratio is greater than 0.5 and less than 1.5. When the measuring device is in working mode, the measuring device can measure the torque of the drive head and display a compensation torque value on the display. The compensation torque value is the product of the measured torque value and the first compensation ratio. The torque tool can adjust and calibrate the compensation through the body operation through the above structure, and the compensation value is automatically converted by the system.

The measuring device is set as a limit torque according to the rated upper limit value of the torque that the drive head can withstand, and the measuring device is set with a first intermediate value, which is greater than 0 and less than the limit torque. The measuring device is set with a first torque range and a second torque range based on the first intermediate value, and the torque value of the first torque range is greater than 0 and less than the first intermediate value, and the torque value of the second torque range is greater than the first intermediate value and less than the limit torque. After the measuring device is in the correction mode and the standard torque value is input, if the standard torque value is within the value range of the first torque range, the measuring device obtains the A first compensation ratio, if the standard torque value is within the numerical range of the second torque range, the measuring device can use the measured torque value and the standard torque value as parameters to calculate a second compensation ratio, the numerical value of the second compensation ratio is greater than 0.5 and less than 1.5, when the measuring device is in working mode, if the measured torque value is within the numerical range of the first torque range, the compensation torque value displayed on the display is the product of the measured torque value and the first compensation ratio, if the measured torque value is within the numerical range of the second torque range, the compensation torque value displayed on the display is the product of the measured torque value and the second compensation ratio.

The measuring device is set to have a second intermediate value, the second intermediate value is greater than the first intermediate value and less than the limit torque, the first intermediate value is greater than 0 and less than the second intermediate value, the measuring device is set to have a third torque range based on the second intermediate value, the torque value of the second torque range is greater than the first intermediate value and less than the second intermediate value, the third torque range is greater than the second intermediate value and less than the limit torque, the measuring device is in the correction mode and inputs the After measuring the standard torque value, if the standard torque value is within the numerical range of the third torque range, the measuring device can use the measured torque value and the standard torque value as parameters to calculate a third compensation factor, and the value of the third compensation factor is greater than 0.5 and less than 1.5. When the measuring device is in working mode, if the measured torque value is within the numerical range of the third torque range, the compensation torque value displayed on the display is the product of the measured torque value and the third compensation factor.

The first intermediate value is greater than 0.1 times the limit torque and less than 0.4 times the limit torque, and the second intermediate value is greater than 0.5 times the limit torque and less than 0.8 times the limit torque.

Pressing the mode button can cause the display to display a correction interface, the correction interface displays a first parameter, the first parameter is the digital portion of the measured torque value, and pressing the setting button can cause the correction interface to display a second parameter, the second parameter is the digital portion of the standard torque value, when the standard torque value is within the numerical range of the first torque range, the first compensation ratio is the ratio of the standard torque value to the measured torque value, when the standard torque value is within the numerical range of the second torque range, the second compensation ratio is the ratio of the standard torque value to the measured torque value, if the standard torque value is within the numerical range of the third torque range, the third compensation ratio is the ratio of the standard torque value to the measured torque value.

Other objects, advantages and novelties of the present invention will become more apparent from the following detailed description and the accompanying drawings.

The technology, means and effects adopted by the present invention are described in detail below with reference to a preferred embodiment and accompanying drawings. This is for illustrative purposes only and is not limited to this structure in patent applications.

Referring to FIG. 1 to FIG. 7 , the three-dimensional appearance diagram and the plane appearance diagram of the torque tool of the present invention for automatically converting compensation value are shown. The torque tool 10 of the present invention includes a body 20 and a measuring device 30; wherein:

A driving head 21 is disposed at one end of the body 20 .

The measuring device 30 is connected to the body 20. The measuring device 30 can measure the torque of the drive head 21 and obtain a measured torque value. The measuring device 30 is provided with a control panel 31. The control panel 31 is provided with a display 311, a mode button 312 and a setting button 313. Pressing the mode button 312 can switch the measuring device 30 from the working mode to the correction mode and display the measured torque value on the display 311. Pressing the mode button 312 can switch the measuring device 30 from the working mode to the correction mode and display the measured torque value on the display 311. The setting button 313 can input a standard torque value, and the measuring device 30 can calculate a first compensation factor using the measured torque value and the standard torque value as parameters. The value of the first compensation factor is greater than 0.5 and less than 1.5. When the measuring device 30 is in working mode, the measuring device 30 can measure the torque of the drive head 21 and display a compensation torque value on the display 311. The compensation torque value is the product of the measured torque value and the first compensation factor.

The measuring device 30 is set as a limit torque according to the rated upper limit value of the torque that the drive head 21 can withstand. The measuring device 30 is set with a first intermediate value, which is greater than 0 and less than the limit torque. The measuring device 30 is set with a first torque range and a second torque range based on the first intermediate value. The torque value of the first torque range is greater than 0 and less than the first intermediate value, and the torque value of the second torque range is greater than the first intermediate value and less than the limit torque. After the measuring device 30 is in the correction mode and the standard torque value is input, if the standard torque value is within the value range of the first torque range, the measuring device 30 obtains The first compensation factor, if the standard torque value is within the numerical range of the second torque range, the measuring device 30 can use the measured torque value and the standard torque value as parameters to calculate a second compensation factor, and the value of the second compensation factor is greater than 0.5 and less than 1.5. When the measuring device 30 is in the working mode, if the measured torque value is within the numerical range of the first torque range, the compensation torque value displayed on the display 311 is the product of the measured torque value and the first compensation factor, and if the measured torque value is within the numerical range of the second torque range, the compensation torque value displayed on the display 311 is the product of the measured torque value and the second compensation factor.

The measuring device 30 is set with a second intermediate value, the second intermediate value is greater than the first intermediate value and less than the limit torque, the first intermediate value is greater than 0 and less than the second intermediate value, the measuring device 30 is set with a third torque range based on the second intermediate value, the torque value of the second torque range is greater than the first intermediate value and less than the second intermediate value, the third torque range is greater than the second intermediate value and less than the limit torque, the measuring device 30 is in the correction mode and inputs the standard After measuring the standard torque value, if the standard torque value is within the numerical range of the third torque range, the measuring device 30 can use the measured torque value and the standard torque value as parameters to calculate a third compensation factor, and the value of the third compensation factor is greater than 0.5 and less than 1.5. When the measuring device 30 is in working mode, if the measured torque value is within the numerical range of the third torque range, the compensation torque value displayed on the display 311 is the product of the measured torque value and the third compensation factor.

The first intermediate value is greater than 0.1 times the limit torque and less than 0.4 times the limit torque, and the second intermediate value is greater than 0.5 times the limit torque and less than 0.8 times the limit torque.

Pressing the mode button 312 enables the display 311 to display a correction interface F, wherein the correction interface F displays a first parameter P1, which is the digital portion of the measured torque value, and pressing the setting button 313 enables the correction interface F to display a second parameter P2, which is the digital portion of the standard torque value. When the standard torque value is within the first torque value, the correction interface F displays a second parameter P2. When the standard torque value is within the numerical range of the torque range, the first compensation ratio is the ratio of the standard torque value to the measured torque value; when the standard torque value is within the numerical range of the second torque range, the second compensation ratio is the ratio of the standard torque value to the measured torque value; if the standard torque value is within the numerical range of the third torque range, the third compensation ratio is the ratio of the standard torque value to the measured torque value.

The relative relationship between the first compensation ratio and the measured torque value and the standard torque value can be expressed as the following equation 1, the relative relationship between the second compensation ratio and the measured torque value and the standard torque value can be expressed as the following equation 2, and the relative relationship between the third compensation ratio and the measured torque value and the standard torque value can be expressed as the following equation 3, wherein X1, X2, and X3 represent the first compensation ratio, the second compensation ratio, and the third compensation ratio, respectively: …Equation 1 …Equation 2 …Formula 3

For example, in actual use, the user can use a torque tester generally available on the market to test the torque tool 10 and obtain the standard torque value (i.e., the second parameter P2). If the limit torque is 200 Newton meters (N·m), the first intermediate value can be 40N·m, and the second intermediate value can be 120N·m. When the measuring device 30 is in the correction mode and the torque tool 10 is used to torque the torque tester and the first parameter P1 is displayed as 30 (as shown in FIG. 2 ), and the setting button 313 is pressed to input the second parameter P2 as 30.3 ( As shown in FIG. 3 ), it means that the measured torque value is smaller than the standard torque value and the error is 1%. Because the data of the standard torque value is less than 40 N·m, the measuring device 30 will set the first compensation factor to 1.01, so that the compensation torque value displayed on the display 311 when the measured torque value is within the first torque range is the measured torque value multiplied by 1.01. When the measuring device 30 is in the correction mode and the torque tool 10 is used to twist the torque tester and the first parameter P1 is displayed as 100 (as shown in FIG. 4 ), and the setting button 3 is pressed, 13 The second parameter P2 is input as 99 (as shown in FIG. 5 ), which means that the measured torque value is larger than the standard torque value and the error is 1%. Since the data of the standard torque value is greater than 40 N·m and less than 120 N·m, the measuring device 30 will set the second compensation factor to 0.99, so that the compensation torque value displayed on the display 311 when the measured torque value is within the second torque range is the measured torque value multiplied by 0.99. When the measuring device 30 is in the correction mode and the torque tool 10 is used to twist the torque tester and the first parameter P2 is set to 0.99, the compensation factor is 0.99. The number P1 is displayed as 140 (as shown in FIG. 6 ), and the setting button 313 is pressed to input the second parameter P2 as 142.1 (as shown in FIG. 7 ), which means that the measured torque value is smaller than the standard torque value and the error is 1.5%. Because the standard torque value is greater than 120 N·m and less than 200 N·m, the measuring device 30 will set the second compensation factor to 1.015, so that the compensation torque value displayed on the display 311 in the future when the measured torque value is within the third torque range is the measured torque value multiplied by 1.015.

The torque tool 10 can be adjusted and compensated by operating the body through the above structure, and the compensation value is automatically converted by the system. The error can be directly corrected by operating the torque tool 10 body, without the need for an external computer or other special calibration instruments, and can be completed with any torque testing machine, thereby improving the convenience of adjustment, correction and compensation. Moreover, when most materials are subjected to force, the relationship between the force magnitude and the generated strain is not linear. Similarly, when the torque tool 10 outputs torque, the relationship between the output torque value and the strain value detected by the strain gauge is also nonlinear. The torque tool 10 can further provide different compensation values for different torque ranges based on the torque value, thereby improving the accuracy of the compensation torque value output by the torque tool 10, making the compensation torque value closer to the actual output torque value.

Based on the above, it can be concluded that the present invention has the following advantages:

1. The torque tool of the present invention automatically converts the compensation value, wherein the torque tool includes a body and a measuring device, a driving head is provided at one end of the body, the measuring device is connected to the body, the measuring device can measure the torque of the driving head and obtain a measured torque value, the measuring device is provided with a control panel, the control panel is provided with a display, a mode button and a setting button, pressing the mode button can switch the measuring device from the working mode to the correction mode and display the measured torque value on the display, and pressing The setting button can input a standard torque value, and the measuring device can calculate a first compensation ratio using the measured torque value and the standard torque value as parameters. The value of the first compensation ratio is greater than 0.5 and less than 1.5. When the measuring device is in working mode, the measuring device can measure the torque of the drive head and display a compensation torque value on the display. The compensation torque value is the product of the measured torque value and the first compensation ratio. The torque tool can adjust and calibrate the compensation through the body operation through the above structure, and the compensation value is automatically converted by the system.

However, the above is only a preferred embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Therefore, any changes in numerical values or replacement of equivalent components, or equivalent changes and modifications made according to the scope of the patent application of the present invention should still fall within the scope of the patent of the present invention.

10: Torque tool 20: Main body 21: Drive head 30: Measuring device 31: Control panel 311: Display 312: Mode button 313: Setting button F: Correction interface P1: First parameter P2: Second parameter

Figure 1: A three-dimensional external view of a torque tool for automatically converting compensation values according to the present invention. Figure 2: A plane external view of a torque tool display for automatically converting compensation values according to the present invention showing a first parameter. Figure 3: A plane external view of a torque tool display for automatically converting compensation values according to the present invention showing a second parameter. Figure 4: A plane external view of a torque tool display for automatically converting compensation values according to the present invention showing a first parameter. Figure 5: A plane external view of a torque tool display for automatically converting compensation values according to the present invention showing a second parameter. Figure 6: A plane external view of a torque tool display for automatically converting compensation values according to the present invention showing a first parameter. Figure 7: A plan view showing the second parameter of the torque tool display that automatically converts the compensation value of the present invention.

10: Torque tools

20: Body

21: Drive head

30: Measuring device

31: Control Panel

311: Display

312: Mode button

313: Settings button

F: Correction interface

P2: Second parameter

Claims (5)

A torque tool for automatically converting compensation values comprises: a main body, a driving head is arranged at one end of the main body; a measuring device, the measuring device is connected to the main body, the measuring device can measure the torque of the driving head and obtain a measured torque value, the measuring device is provided with a control panel, the control panel is provided with a display, a mode button and a setting button, pressing the mode button can switch the measuring device from the working mode to the correction mode and display the measured torque value on the display, and pressing the setting button can A standard torque value can be input, and the measuring device can calculate a first compensation ratio using the measured torque value and the standard torque value as parameters. The value of the first compensation ratio is greater than 0.5 and less than 1.5. When the measuring device is in working mode, the measuring device can measure the torque of the drive head and display a compensation torque value on the display. The compensation torque value is the product of the measured torque value and the first compensation ratio. A torque tool for automatically converting compensation values as described in claim 1, wherein the measuring device is set as a limit torque based on the rated upper limit value of the torque that the drive head can withstand, the measuring device is set with a first intermediate value, the first intermediate value is greater than 0 and less than the limit torque, the measuring device is set with a first torque range and a second torque range based on the first intermediate value, the torque value of the first torque range is greater than 0 and less than the first intermediate value, the torque value of the second torque range is greater than the first intermediate value and less than the limit torque, and after the measuring device is in the correction mode and the standard torque value is input, if the standard torque value is within the value of the first torque range range, the measuring device obtains the first compensation ratio; if the standard torque value is within the numerical range of the second torque range, the measuring device can calculate a second compensation ratio using the measured torque value and the standard torque value as parameters, and the numerical value of the second compensation ratio is greater than 0.5 and less than 1.5. When the measuring device is in working mode, if the measured torque value is within the numerical range of the first torque range, the compensation torque value displayed on the display is the product of the measured torque value and the first compensation ratio; if the measured torque value is within the numerical range of the second torque range, the compensation torque value displayed on the display is the product of the measured torque value and the second compensation ratio. A torque tool for automatically converting compensation values as described in claim 2, wherein the measuring device is set to have a second intermediate value, the second intermediate value is greater than the first intermediate value and less than the ultimate torque, the first intermediate value is greater than 0 and less than the second intermediate value, the measuring device is set to have a third torque range based on the second intermediate value, the torque value of the second torque range is greater than the first intermediate value and less than the second intermediate value, the third torque range is greater than the second intermediate value and less than the ultimate torque, and the measuring device After being placed in the correction mode and inputting the standard torque value, if the standard torque value is within the numerical range of the third torque range, the measuring device can calculate a third compensation factor using the measured torque value and the standard torque value as parameters, and the numerical value of the third compensation factor is greater than 0.5 and less than 1.5. When the measuring device is in the working mode, if the measured torque value is within the numerical range of the third torque range, the compensation torque value displayed on the display is the product of the measured torque value and the third compensation factor. A torque tool with automatic conversion compensation value as described in claim 3, wherein the first intermediate value is greater than 0.1 times the limit torque and less than 0.4 times the limit torque, and the second intermediate value is greater than 0.5 times the limit torque and less than 0.8 times the limit torque. A torque tool for automatically converting compensation values as described in claim 3, wherein pressing the mode button enables the display to display a correction interface, wherein the correction interface displays a first parameter, which is the digital portion of the measured torque value, and pressing the setting button enables the correction interface to display a second parameter, which is the digital portion of the standard torque value. When the standard torque value is within the first The first compensation ratio is the ratio of the standard torque value to the measured torque value when the standard torque value is within the numerical range of the torque range, the second compensation ratio is the ratio of the standard torque value to the measured torque value when the standard torque value is within the numerical range of the second torque range, and the third compensation ratio is the ratio of the standard torque value to the measured torque value if the standard torque value is within the numerical range of the third torque range.

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