Comprehensive calibrating device for tensiometer and torque wrench and calibrating method thereof
By designing a comprehensive verification device including a torque wrench and a tension gauge verification module, the problem that the torque wrench verification device with a single function in the prior art cannot simultaneously detect the tension gauge, and efficient and accurate comprehensive verification of the torque wrench and tension gauge is achieved.
Patent Information
- Application Number
- CN202411711367.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-03-04
AI Technical Summary
In the prior art, the torque wrench has a single function and cannot conduct comprehensive verification of the tension gauge and torque wrench at the same time.
A comprehensive verification device is designed, including a torque wrench verification module and a tension gauge verification module. The torque wrench verification module verifies the torque wrench through the quantitative torque output mechanism and the limit frame, while the tension gauge verification module verifies the tension gauge through the wire, tension mechanism and force sensor.
It realizes simultaneous verification of torque wrench and tension gauge, improves verification efficiency and accuracy, and meets the comprehensive verification needs of a variety of equipment.
Smart Images
Figure CN119555276A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of tension meter and torque wrench verification, and in particular to a comprehensive verification device and a verification method for a tension meter and a torque wrench. Background Art
[0002] A torque wrench, also known as a torque wrench or torque spanner, is a tightening measuring instrument with a torque measuring mechanism. It is used to tighten bolts and nuts and can measure the torque value when tightening. Before the torque wrench leaves the factory, it needs to be calibrated to ensure that the torque wrench can perform accurate measurements. The current torque wrench calibration devices are all specifically used to calibrate torque and have a single function. Therefore, a comprehensive calibration device for a tension meter and a torque wrench is proposed. Summary of the invention
[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a comprehensive calibration device for a tension meter and a torque wrench and a calibration method thereof, which can calibrate both the torque wrench and the tension meter.
[0004] Technical solution: To achieve the above-mentioned purpose, a comprehensive calibration device for a tension meter and a torque wrench of the present invention comprises a torque wrench calibration module and a tension meter calibration module; the torque wrench calibration module comprises a quantitative torque output mechanism and a limit frame, and the quantitative torque output mechanism comprises a torque shaft; when calibrating the torque wrench, the wrench mouth of the torque wrench is sleeved on the torque shaft, and the tail handle of the torque wrench is clamped on the limit frame; after the torque shaft outputs the torque, the output torque value is compared with the torque value measured by the torque wrench to calibrate the torque wrench; the tension meter calibration module comprises a wire, a stretching mechanism and a force sensor, and the force sensor is connected to the wire; when calibrating the tension meter, the stretching mechanism stretches the wire, and after the tension meter measures the tension of the stretched wire, the measurement values of the tension meter and the force sensor are compared to calibrate the tension meter.
[0005] Furthermore, the two ends of the wire are respectively a fixed end and a movable end, and the fixed end of the wire is connected to the support; the stretching mechanism includes a swinging member, which is connected to the movable end of the wire, and the swinging member can swing in a direction away from the fixed end of the wire to stretch the wire.
[0006] Furthermore, the swinging member is a swing arm installed on the torque shaft, and the torque shaft drives the swing arm to swing when it rotates; when the torque shaft adjusts the output torque, the pulling force of the swing arm on the movable end of the wire is changed.
[0007] Furthermore, in the process of the swing arm gradually stretching the wire, the angle between the swing arm and the wire is always an acute angle, and the angle between the two tends to gradually decrease, so that the torque output by the torque shaft is positively correlated with the pulling force of the swing arm on the movable end of the wire.
[0008] Furthermore, the support is installed on a slide rail, one end of which extends toward the location of the torque axis. The support can move closer to or farther away from the torque axis along the slide rail to change the position of the fixed end of the wire, thereby changing the angle between the swing arm and the wire; the slide rail also has a locking mechanism that can fix the support.
[0009] Furthermore, the movable end of the wire is hingedly connected to the swing arm, a rotatable hinge is provided on the support, and the fixed end of the wire is hingedly connected to the hinge, so that the movable end and the fixed end of the wire can adapt to the angle change when the swing arm swings.
[0010] Furthermore, the limit frame is installed on the support; when the support moves closer to or farther away from the torque axis along the slide rail, the distance between the limit frame and the torque axis changes to adapt to torque wrenches of different lengths.
[0011] Furthermore, the hinged member is detachably mounted on the support; the swing arm is detachably mounted on the torque shaft, and the angle of the swing arm when mounted on the torque shaft is adjustable.
[0012] Furthermore, a torque wrench calibration method of a comprehensive calibration device of a tension meter and a torque wrench comprises the following steps: step S1: removing the hinge from the support and removing the swing arm from the torque shaft; step S2: putting the wrench mouth of the torque wrench on the torque shaft and clamping the tail handle of the torque wrench on the limit frame; step S3: gradually increasing the torque value output by the torque shaft, and comparing the torque value measured by the torque wrench with the torque value output by the torque shaft for multiple times to calibrate the torque wrench.
[0013] Furthermore, a tension meter calibration method of a comprehensive calibration device for a tension meter and a torque wrench comprises the following steps: Step T1: installing the hinge on the support, installing the swing arm on the torque shaft, and making the length direction of the swing arm perpendicular to the extension direction of the slide rail; Step T2: adjusting the position of the support on the slide rail, sliding the support in a direction away from the torque shaft until the wire is in a state of being tightened, and then fixing the support on the slide rail; Step T3: the torque shaft drives the swing arm to swing in a direction away from the fixed end of the wire to tighten the wire, and the angle between the swing arm and the wire is an acute angle at this time; Step T4: using a tension meter to measure the tension of the tightened wire, and then the torque shaft gradually increases the output torque value to stretch the wire, so that the tension of the wire gradually increases, and the angle between the swing arm and the wire gradually decreases; then the measurement values of the tension meter and the force sensor are compared multiple times to calibrate the tension meter.
[0014] Beneficial effects: The comprehensive calibration device and calibration method of a tension meter and a torque wrench of the present invention have the following beneficial effects:
[0015] 1) By disassembling and assembling the swing arm and hinge on the comprehensive verification device, the working mode of the comprehensive verification device can be switched. In different working modes, the comprehensive verification device can verify the torque wrench or tension meter;
[0016] 2) In the process of the torque shaft driving the swing arm to swing to stretch the wire, the angle between the swing arm and the wire always remains an acute angle, and the angle between the two tends to gradually decrease, so that the torque output by the torque shaft is positively correlated with the pulling force of the swing arm on the movable end of the wire; therefore, the torque output by the torque shaft is also positively correlated with the pulling force measured by the tension meter and the force sensor; in this way, the measurement data of the tension meter and the force sensor can be compared multiple times from small to large in order to calibrate the tension meter. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Attached Figure 1 This is a schematic diagram of the comprehensive verification device verifying the tensiometer;
[0018] Attached Figure 2 This is a schematic diagram of the comprehensive verification device verifying the torque wrench;
[0019] Attached Figure 3 This is the front view of the comprehensive verification device. DETAILED DESCRIPTION
[0020] The present invention will be further described below in conjunction with the accompanying drawings.
[0021] As attached Figures 1 to 3 The comprehensive calibration device for a tension meter and a torque wrench comprises a torque wrench calibration module and a tension meter calibration module. By activating different calibration modules, the calibration device of the present invention can calibrate the torque wrench 4 or the tension meter 7.
[0022] The torque wrench calibration module includes a quantitative torque output mechanism 1 and a limit frame 2. The quantitative torque output mechanism 1 includes a torque motor and a torque shaft 3. The torque motor drives the torque shaft 3 to rotate so that the torque shaft 3 can output torque quantitatively. The top of the torque shaft 3 is simulated into the shape of a bolt. When calibrating the torque wrench 4, the wrench portion of the torque wrench 4 can be sleeved on the top of the torque shaft 3. The tail handle of the torque wrench 4 is stuck on the limit frame 2. The limit frame 2 forms a limit groove. The tail handle of the torque wrench 4 is correspondingly placed in the limit groove. The bottom of the limit groove has a support member, which can be raised and lowered to adapt to the height of the torque wrench 4. There is an electric control screen 14 on the comprehensive calibration device. Through the electric control screen 14, the torque shaft 3 can be allowed to input the required torque. After the torque shaft 3 outputs the torque, the torque wrench 4 will be twisted. The torque wrench 4 can measure the torque on the wrench portion and display it on the display screen of the torque wrench 4. The output torque value is then compared with the torque value measured by the torque wrench 4 to calibrate the torque wrench 4 .
[0023] The tensiometer calibration module includes a wire 5, a stretching mechanism and a force sensor 6, as shown in the attached Figure 1 As shown in , the force sensor 6 is connected to the wire 5. When the wire 5 is stretched, the force sensor 6 can directly measure the pulling force, that is, the tension, on the wire 5. When the tension meter 7 is calibrated, the stretching mechanism stretches the wire 5, and the tension meter 7 measures the tension of the stretched wire 5. The measured values of the tension meter 7 and the force sensor 6 are compared to calibrate the tension meter 7.
[0024] The two ends of the wire 5 are a fixed end 8 and a movable end 9, respectively, and the fixed end 8 of the wire 5 is connected to the support 10. When the wire 5 is stretched, the movable end 9 of the wire 5 is pulled, and the fixed end 8 of the wire 5 is connected to a fixed point on the support 10. The stretching mechanism includes a swinging member, which is connected to the movable end 9 of the wire 5, and the swinging member can swing in a direction away from the fixed end 8 of the wire 5 to stretch the wire 5.
[0025] As attached Figure 1 As shown in , the swing member is a swing arm 11, one end of which is mounted on the torque shaft 3, and the movable end 9 of the wire 5 is connected to the other end of the swing arm 11. When the torque shaft 3 rotates, it can drive the swing arm 11 to swing, thereby stretching the wire 5. When the torque shaft 3 adjusts the output torque, the pulling force of the swing arm 11 on the movable end 9 of the wire 5 is changed, thereby changing the tension value measured by the tension meter 7.
[0026] When the tension meter 7 is calibrated, in order to achieve a better calibration effect, it is necessary to compare the measured values of the tension meter 7 and the force sensor 6 for many times, and for this purpose, it is necessary to change the tension of the wire 5. To change the tension of the wire 5, it is necessary to adjust the torque output by the torque shaft 3. However, the torque output by the torque shaft 3 and the tension on the wire 5 may not be in a one-to-one correspondence. For example, during the swing of the swing arm 11, the angle between the wire 5 and the swing arm 11 gradually changes from 92 degrees to 88 degrees. Since the angle changes from an obtuse angle to an acute angle, the sine value of the angle will increase first and then decrease. Therefore, the torque output by the torque shaft 3 and the tension on the wire 5 may not be in a one-to-one correspondence. There may be a situation where the tension on the wire 5 is different, but the torque output by the torque shaft 3 is the same. Therefore, it is necessary to limit the angle relationship between the swing arm 11 and the wire 5.
[0027] Specifically, in the process of the swing arm 11 gradually stretching the wire 5, the angle between the swing arm 11 and the wire 5 is always kept as an acute angle. In addition, in the process of the swing arm 11 gradually stretching the wire 5, the angle between the swing arm 11 and the wire 5 tends to gradually decrease. Thus, the torque output by the torque shaft 3 is positively correlated with the pulling force of the swing arm 11 on the movable end 9 of the wire 5.
[0028] The support 10 is installed on the slide rail 12, which is a straight rail, and the support 10 can slide along the slide rail 12. One end of the slide rail 12 extends toward the position of the torque shaft 3, and the support 10 can slide along the slide rail 12 to be close to or away from the torque shaft 3 to change the position of the fixed end 8 of the wire 5, thereby changing the angle between the swing arm 11 and the wire 5. The slide rail 12 also has a locking mechanism that can fix the support 10. The support 10 can be fixed on the slide rail 12 by the locking mechanism to prevent the support 10 from sliding on the slide rail 12 during the stretching of the wire 5. Since the support 10 can slide to adjust the position, the position of the fixed end 8 of the wire 5 can also be adjusted. In this way, when the swing arm 11 is installed on the torque shaft 3, the angle between the swing arm 11 and the wire 5 can also be changed by adjusting the position of the fixed end 8 of the wire 5.
[0029] The movable end 9 of the wire 5 is hingedly connected to the swing arm 11, and a rotatable hinge 13 is provided on the support 10, and the fixed end 8 of the wire 5 is hingedly connected to the hinge 13, so that the movable end 9 and the fixed end 8 of the wire 5 can adapt to the angle change when the swing arm 11 swings. Therefore, in the process of the swing arm 11 swinging and stretching the wire 5, the two ends of the wire 5 are in a straight state, and the force sensor 6 measures the tension of the wire 5 more accurately.
[0030] The hinge 13 is detachably mounted on the support 10. Specifically, the hinge 13 is a turntable with a plug-in column at the bottom. The top end of the wire 5 is fixedly connected to the turntable. The support 10 is provided with a plug-in hole. When the plug-in column at the bottom of the turntable is inserted into the plug-in hole, the turntable can rotate on the support 10. The swing arm 11 is detachably mounted on the torque shaft 3. Specifically, one end of the swing arm 11 is provided with a sleeve hole. The top shape of the torque shaft 3 simulates a bolt, and the shape of the sleeve hole simulates a nut, so that the sleeve hole can be sleeved on the torque shaft 3. The angle of the swing arm 11 when it is installed on the torque shaft 3 is adjustable. By rotating the torque shaft 3, the angle of the swing arm 11 can also be changed.
[0031] The present invention provides a tensiometer calibration method of a comprehensive calibration device for a tensiometer and a torque wrench, comprising the following steps:
[0032] Step T1: As attached Figure 1 As shown in , the hinge 13 is installed on the support 10, and the swing arm 11 is installed on the torque shaft 3, so that the length direction of the swing arm 11 is perpendicular to the extension direction of the slide rail 12; at this time, the fixed end 8 of the wire 5 is connected to the hinge 13, and the movable end 9 of the wire 5 is connected to one side of the swing arm 11;
[0033] Step T2: adjusting the position of the support 10 on the slide rail 12, sliding the support 10 in a direction away from the torque axis 3 until the wire 5 is in a state of being tightened, and then fixing the support 10 on the slide rail 12;
[0034] Step T3: The torque shaft 3 drives the swing arm 11 to swing in a direction away from the fixed end 8 of the wire 5, thereby tightening the wire 5; since the swing arm 11 is perpendicular to the slide rail 12 before the swing, the angle between the swing arm 11 and the wire 5 must be an acute angle after the swing;
[0035] Step T4: Use the tension meter 7 to measure the tension of the stretched wire 5, and then gradually increase the output torque value of the torque shaft 3 to stretch the wire 5, so that the tension of the wire 5 gradually increases; in the process of gradually increasing the output torque of the torque shaft 3, the angle between the swing arm 11 and the wire 5 will gradually decrease; then compare the measured values of the tension meter 7 and the force sensor 6 for multiple times to obtain multiple groups of comparison data, and calibrate the tension meter 7 through the multiple groups of comparison data, so that the calibration result of the tension meter 7 is more reliable.
[0036] In the process of calibrating the tension meter 7, the torque value output by the torque shaft 3, the measured value of the force sensor 6, and the measured value of the tension meter 7 are all indispensable and positively correlated. Therefore, when the torque value output by the torque shaft 3 is increased, the measured values of the force sensor 6 and the tension meter 7 can increase accordingly. Therefore, when comparing the measured values of the two, they can be compared gradually from small to large.
[0037] The limiting frame 2 is also mounted on the support 10. When the support 10 moves closer to or farther from the torque shaft 3 along the slide rail 12, the spacing between the limiting frame 2 and the torque shaft 3 will change to accommodate torque wrenches 4 of different lengths.
[0038] The present invention also provides a torque wrench calibration method of a comprehensive calibration device for a tension meter and a torque wrench, comprising the following steps:
[0039] Step S1: As shown in the attached Figure 2 As shown in , the hinge 13 is removed from the support 10, and the swing arm 11 is removed from the torque shaft 3;
[0040] Step S2: The mouth of the torque wrench 4 is put on the torque shaft 3, and the tail handle of the torque wrench 4 is clamped on the limit frame 2;
[0041] Step S3: the torque shaft 3 gradually increases the torque value output, and the torque value measured by the torque wrench 4 is compared with the torque value output by the torque shaft 3 for multiple times to obtain multiple groups of comparison data. The torque wrench 4 is calibrated by the multiple groups of comparison data, and the calibration result of the torque wrench 4 is more reliable.
[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A comprehensive calibration device for a tension meter and a torque wrench, characterized in that: Including torque wrench calibration module and tension meter calibration module; The torque wrench verification module comprises a quantitative torque output mechanism (1) and a limit frame (2), wherein the quantitative torque output mechanism (1) comprises a torque shaft (3); when verifying a torque wrench (4), the wrench mouth of the torque wrench (4) is sleeved on the torque shaft (3), and the tail handle of the torque wrench (4) is clamped on the limit frame (2); after the torque shaft (3) outputs the torque, the output torque value is compared with the torque value measured by the torque wrench (4) to verify the torque wrench (4); The tension meter calibration module comprises a wire (5), a stretching mechanism and a force sensor (6), wherein the force sensor (6) is connected to the wire (5); when calibrating the tension meter (7), the stretching mechanism stretches the wire (5), and the tension meter (7) measures the tension of the stretched wire (5), and then compares the measured values of the tension meter (7) with those of the force sensor (6) to calibrate the tension meter (7).
2. A comprehensive calibration device for a tension meter and a torque wrench according to claim 1, characterized in that: The two ends of the wire (5) are respectively a fixed end (8) and a movable end (9), and the fixed end (8) of the wire (5) is connected to a support (10); the stretching mechanism comprises a swinging member, the swinging member is connected to the movable end (9) of the wire (5), and the swinging member can swing in a direction away from the fixed end (8) of the wire (5) to stretch the wire (5).
3. A comprehensive calibration device for a tension meter and a torque wrench according to claim 2, characterized in that: The swing member is a swing arm (11) mounted on the torque shaft (3). When the torque shaft (3) rotates, the swing arm (11) is driven to swing. When the torque shaft (3) adjusts the magnitude of the output torque, the magnitude of the pulling force exerted by the swing arm (11) on the movable end (9) of the wire (5) is changed.
4. A comprehensive calibration device for a tension meter and a torque wrench according to claim 3, characterized in that: In the process of the swing arm (11) gradually stretching the wire (5), the angle between the swing arm (11) and the wire (5) is always an acute angle, and the angle between the two tends to gradually decrease, so that the torque output by the torque shaft (3) is positively correlated with the pulling force of the swing arm (11) on the movable end (9) of the wire (5).
5. A comprehensive calibration device for a tension meter and a torque wrench according to claim 4, characterized in that: The support (10) is installed on a slide rail (12), one end of the slide rail (12) extends toward the position of the torque axis (3), and the support (10) can move closer to or farther away from the torque axis (3) along the slide rail (12) to change the position of the fixed end (8) of the wire (5), thereby changing the angle between the swing arm (11) and the wire (5); the slide rail (12) also has a locking mechanism that can fix the support (10).
6. A comprehensive calibration device for a tension meter and a torque wrench according to claim 5, characterized in that: The movable end (9) of the wire (5) is hingedly connected to the swing arm (11); a rotatable hinge (13) is provided on the support (10); and the fixed end (8) of the wire (5) is hingedly connected to the hinge (13), so that both the movable end (9) and the fixed end (8) of the wire (5) can adapt to the angle change when the swing arm (11) swings.
7. A comprehensive calibration device for a tension meter and a torque wrench according to claim 6, characterized in that: The limit frame (2) is installed on the support (10); when the support (10) approaches or moves away from the torque shaft (3) along the slide rail (12), the distance between the limit frame (2) and the torque shaft (3) is changed to adapt to torque wrenches (4) of different lengths.
8. A comprehensive calibration device for a tension meter and a torque wrench according to claim 7, characterized in that: The hinge (13) is detachably mounted on the support (10); the swing arm (11) is detachably mounted on the torque shaft (3), and the angle of the swing arm (11) when mounted on the torque shaft (3) is adjustable.
9. The torque wrench calibration method of the comprehensive calibration device of a tension meter and a torque wrench according to claim 8, characterized in that: The following steps are involved: Step S1: Remove the hinge (13) from the support (10), and remove the swing arm (11) from the torque shaft (3); Step S2: The mouth of the torque wrench (4) is put on the torque shaft (3), and the tail handle of the torque wrench (4) is clamped on the limit frame (2); Step S3: the torque shaft (3) gradually increases the torque value output, and the torque value measured by the torque wrench (4) is compared with the torque value output by the torque shaft (3) for multiple times to calibrate the torque wrench (4).
10. The tensiometer calibration method of the comprehensive calibration device of a tensiometer and a torque wrench according to claim 8, characterized in that: The following steps are involved: Step T1: Install the hinge (13) on the support (10), install the swing arm (11) on the torque shaft (3), and make the length direction of the swing arm (11) perpendicular to the extension direction of the slide rail (12); Step T2: adjusting the position of the support (10) on the slide rail (12), sliding the support (10) in a direction away from the torque axis (3) until the wire (5) is in a state of being about to be tightened, and then fixing the support (10) on the slide rail (12); Step T3: the torque shaft (3) drives the swing arm (11) to swing in a direction away from the fixed end (8) of the wire (5), thereby tightening the wire (5). At this time, the angle between the swing arm (11) and the wire (5) is an acute angle; Step T4: Use the tension meter (7) to measure the tension of the stretched wire (5), then gradually increase the torque value output by the torque shaft (3) to stretch the wire (5), so that the tension of the wire (5) gradually increases, and the angle between the swing arm (11) and the wire (5) gradually decreases; then compare the measured values of the tension meter (7) and the force sensor (6) for multiple times to calibrate the tension meter (7).