Automatic calibration device for dial-type torque wrench

Abstract

This utility model relates to an automatic calibration device for dial-type torque wrenches, including a torque loading mechanism and a mounting mechanism. The torque loading mechanism includes a rotating component, multiple different torque loading components, and an automatic reading mechanism for reading the dial value of the torque wrench. The multiple torque loading components are spaced apart circumferentially on the rotating component. The mounting mechanism, also spaced apart along a first direction, includes a distance adjustment component, a leveling component, and a clamping component. The distance adjustment component includes a first guide rail and a first movable seat movably mounted on the first guide rail along the first direction. The leveling component is mounted on the first movable seat and includes a second guide rail and a second movable seat movably mounted on the second guide rail along a second direction. The clamping component is mounted on the second movable seat. The first direction is perpendicular to the second direction. This application can be adapted to torque wrenches of different types and lengths.

Description

Technical Field

[0001] This application relates to the field of tool accuracy verification technology, and more specifically, to an automatic verification device for a dial-type torque wrench. Background Technology

[0002] Torque wrenches are widely used in critical assembly fields such as automotive, aerospace, rail transportation, and energy equipment. Torque tools require regular calibration to improve their operational accuracy. However, most calibration devices for torque wrenches in related technologies lack broad applicability; it is difficult to achieve high-precision calibration using the same device for torque wrenches of different sizes and ranges. Utility Model Content

[0003] The technical problem to be solved by this application is to provide an automatic calibration device for dial torque wrenches, addressing the aforementioned deficiencies of the prior art.

[0004] The technical solution adopted by this application to solve its technical problem is: to construct an automatic calibration device for a dial-type torque wrench, comprising: A torque loading mechanism includes a rotating component and multiple different torque loading components, wherein the multiple torque loading components are circumferentially spaced on the rotating component; The mounting mechanism, spaced apart from the torque loading mechanism along a first direction, includes: The distance adjustment assembly includes a first guide rail and a first movable seat movably disposed on the first guide rail along a first direction; A leveling assembly, disposed on the first movable base, includes a second guide rail and a second movable base movably disposed on the second guide rail along a second direction; and A clamping element is disposed on the second movable seat; An automatic reading mechanism for reading the dial values ​​of a torque wrench; Wherein, the first direction is perpendicular to the second direction.

[0005] Furthermore, the rotating assembly includes a rotatable turntable; a plurality of torque loading components are disposed on the turntable and are spaced apart circumferentially along the axis of rotation of the turntable; The torque loading assembly includes a torque sensor, a second drive member, and a connector for connecting a tenon to a torque wrench, wherein the torque sensor is disposed between the second drive member and the connector.

[0006] Furthermore, at least some of the torque loading components have different ranges; and / or At least some of the torque loading components have different connectors.

[0007] Furthermore, the leveling assembly also includes a leveling sensor for verifying the levelness of the torque wrench.

[0008] Furthermore, the automatic reading mechanism includes a camera movably disposed along the first direction, and the camera and the distance adjustment component are spaced apart along the second direction.

[0009] Furthermore, the automatic reading mechanism also includes a position adjustment component; the position adjustment component includes a third guide rail and a third movable seat movably disposed on the third guide rail along the first direction, and the camera is disposed on the third movable seat.

[0010] Furthermore, the automatic reading mechanism also includes a position feedback component for detecting the positional relationship between the camera and the dial; the position feedback component and the camera are synchronously movable along the first direction.

[0011] Furthermore, the position feedback component includes at least two displacement sensors; the at least two displacement sensors are symmetrically arranged on both sides of the camera axis along the first direction, and arranged on one side of the clamping member along a third direction; The third direction is perpendicular to the first direction and the second direction.

[0012] Furthermore, it also includes a working platform and multiple support legs; the multiple support legs are spaced apart at the bottom end of the working platform and are retractable along the second direction; the torque loading mechanism, the installation mechanism and the automatic reading mechanism are respectively disposed on the working platform.

[0013] Furthermore, it also includes a control mechanism, which is electrically connected to the torque loading mechanism, the mounting mechanism, and the automatic reading mechanism, respectively.

[0014] Implementing the technical solution constructed in this application has at least the following beneficial effects: This application, by incorporating a rotating component and multiple different torque loading components, enables it to adapt to various types of torque wrenches. By adding a distance adjustment component, it can adapt to torque wrenches of different lengths. This improves the versatility of the dial-type torque wrench automatic calibration device. The leveling component ensures the torque wrench remains horizontal during calibration, reducing errors and improving calibration accuracy. The automatic dial data reading mechanism enhances the automation level of the equipment, reducing manual labor and increasing inspection speed. Attached Figure Description

[0015] The present application will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1This is a schematic diagram of the structure of an automatic calibration device for a dial-type torque wrench according to an embodiment of this application; Figure 2 yes Figure 1 A schematic diagram of the torque loading mechanism in the diagram; Figure 3 yes Figure 1 A schematic diagram of the installation mechanism in the diagram; Figure 4 yes Figure 1 A schematic diagram of the automatic reading mechanism in the image. Detailed Implementation

[0016] To provide a clearer understanding of the technical features, objectives, and effects of this application, the specific embodiments of this application are now described in detail with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0017] In the description of this application, it should be understood that the terms "longitudinal", "lateral", "up", "down", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0019] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0020] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] Figures 1 to 4 This application illustrates an embodiment of an automatic calibration device 1 for dial-type torque wrenches, capable of performing high-precision calibration of torque wrenches 2 of different sizes and ranges. The automatic calibration device 1 includes a torque loading mechanism 10, a mounting mechanism 20, an automatic reading mechanism 30, a working platform 40, and a control mechanism 50. The torque loading mechanism 10, mounting mechanism 20, automatic reading mechanism 30, and control mechanism 50 are all mounted on the working platform 40, and are electrically connected to the control mechanism 50. The control mechanism 50 controls the automatic calibration device 1 to perform calibration operations on the torque wrenches 2.

[0022] like Figure 1 and Figure 4 As shown, it should be understood that the torque wrench 2 is longitudinally elongated, with its two ends defined as a head 201 and a tail 202. The head 201 has a tenon 203 for transmitting torque. The torque wrench 2 also includes a dial 3 for displaying the torque value, located between the head 201 and the tail 202.

[0023] The mounting mechanism 20 and the torque loading mechanism 10 are spaced apart along the first direction X. The torque loading mechanism 10 is used to assemble with the head 201 of the torque wrench 2 and apply torque to its tenon 203. The mounting mechanism 20 is used to clamp the tail 202 of the torque wrench 2, so that the torque wrench 2 is relatively positioned during the calibration process, ensuring the accuracy of the calibration. The automatic reading mechanism 30 is used to accurately read the values ​​displayed on the dial 3.

[0024] During the calibration process, the two ends of the torque wrench 2 can be respectively attached to the torque loading mechanism 10 and the mounting mechanism 20. Then, the control mechanism 50 controls the torque loading mechanism 10 to apply a preset torque value to the tenon 203. Subsequently, the automatic reading mechanism 30 reads the value displayed on the dial 3 and outputs the value to the control mechanism 50. The control mechanism 50 can compare the read value with the torque value displayed by the torque loading mechanism 10 to calibrate the torque wrench 2.

[0025] This application enables automated calibration of the torque wrench 2 through the coordinated operation of various mechanisms. Compared to manual reading and comparison, the automatic reading mechanism 30 avoids subjective errors caused by manual reading and recording, reducing human intervention issues. Simultaneously, by controlling the torque loading mechanism 10 to apply a preset torque value through the control mechanism 50, problems such as unstable torque loading, low accuracy, and slow processing time caused by manual torque application can be avoided, improving calibration accuracy and efficiency.

[0026] like Figure 1 and Figure 2 As shown, in some embodiments, the torque loading mechanism 10 may include a rotating component 11 and multiple torque loading components 12. All torque loading components 12 are disposed on the rotating component 11 and are evenly spaced circumferentially. The different arrangements of each torque loading component 12 allow for adaptation to different torque wrenches 2, enabling a single calibration device to perform calibration operations on multiple torque wrenches 2.

[0027] Specifically, the rotating assembly 11 may include a turntable 111, a first driving member 112, and a first reducer 113. The turntable 111 is generally circular and can rotate under the drive of the first driving member 112. The first driving member 112 is fixed to the working platform 40, and its output end is the input end of the first reducer 113. The output end of the first reducer 113 is connected to the rotating shaft of the turntable 111. The first driving member 112 and the first reducer 113 are electrically connected to the control mechanism 50. Thus, the control mechanism 50 can control the rotation of the turntable 111 by controlling the rotation of the first driving member 112.

[0028] All torque loading components 12 are mounted on the turntable 111 and spaced circumferentially along the axis of rotation of the turntable 111, that is, spaced circumferentially along the first drive member 112. Thus, for different specifications and types of torque wrenches 2, the first drive member 112 and the first reducer 113 can be controlled by the control mechanism 50 to rotate the turntable 111, quickly switching the appropriate torque loading component 12 to the corresponding position for mounting the torque wrench 2.

[0029] Each torque loading component 12 may include a connector 121, a torque sensor 122, a second drive component 123, and a second reducer 124. The torque sensor 122, the second drive component 123, and the second reducer 124 may be electrically connected to the control mechanism 50. The output end of the second drive component 123 is connected to the input end of the second reducer 124. The torque sensor 122 is disposed between the output end of the second reducer 124 and the connector 121. The connector 121 is used to assemble with the tenon 203 of the torque wrench 2 to output torque to the tenon 203.

[0030] During the calibration process, the control mechanism 50 receives the torque values ​​output by the torque sensor 122 and the automatic reading mechanism 30 respectively, and compares the torque values ​​output by the two to calibrate the torque wrench 2.

[0031] By incorporating torque sensor 122, optimal measurement accuracy within the measurement range can be ensured, further improving the precision of the calibration. By combining second drive unit 123 with second reducer 124, stable torque output can be provided, improving calibration reliability.

[0032] It should be noted that the connector 121 may specifically be provided with a mortise for assembly with the tenon 203 at the head 201 of the torque wrench 2. The specific structure of the mortise can be flexibly designed according to the structure of the tenon 203 of the torque wrench 2, and is not specifically limited here.

[0033] It should be noted that the torque loading component 12 is disposed on the turntable 111. Specifically, the torque loading component 12 may pass through the turntable 111, with at least the connecting piece 121 located on the upper side of the turntable 111, to facilitate the assembly of the torque wrench 2. Other components may partially pass through the through holes of the turntable 111, and partially be located on the lower side of the turntable 111. Alternatively, other components may partially be located on the upper side of the turntable 111, partially pass through the through holes of the turntable 111, and partially be located on the lower side of the turntable 111. Or, other components may be entirely located on the upper side of the turntable 111, etc. No specific limitations are made here.

[0034] It should be noted that the output end of the first reducer 113 is connected to the shaft of the turntable 111. Specifically, this can be achieved by setting a keyway at the shaft of the turntable 111, so that the output shaft of the first reducer 113 is key-connected to the turntable 111. Of course, the two can also be connected by other detachable or non-detachable methods such as threaded connection, bolt connection, welding, etc., which are not specifically limited here.

[0035] exist Figure 2 In the embodiment shown, both the first driving element 112 and the second driving element 123 are motors.

[0036] In some other embodiments, the turntable 111 may also be configured as a disc in other shapes such as ellipse, rectangle, polygon, semicircle, or irregular shape.

[0037] In some other embodiments, the rotating assembly 11 may not have the first reducer 113. Similarly, the torque loading assembly 12 may not have the second reducer 124.

[0038] In some other embodiments, the first drive member 112 may also be implemented as other types of existing drive mechanisms such as pneumatic drive mechanism, electromagnetic drive mechanism, and hydraulic drive mechanism.

[0039] In some embodiments, at least some of the torque loading components 12 have different ranges. In this way, the versatility of the dial-type torque wrench automatic calibration device 1 can be improved. For torque wrenches 2 with different ranges, only by rotating the rotating component 11 and replacing the torque loading component 12 with the one of different range, a more suitable preset value of torque can be applied to it to improve the accuracy of calibration, and there is no need to replace other calibration devices.

[0040] For example, there are three torque loading components 12, each with a corresponding torque range of... , , wait.

[0041] Specifically, the torque loading component 12 has different ranges, which can be understood as the second drive component 123, the second reducer 124, and the torque sensor 122 all having different ranges.

[0042] In some embodiments, the connectors 121 of each torque loading component 12 are configured differently to accommodate different tenons 203 of the torque wrench 2. This further improves the versatility of the dial-type automatic torque wrench calibration device 1. For torque wrenches 2 with different tenons 203, calibration can be performed simply by rotating the rotating component 11 and replacing the different torque loading components 12, without needing to replace other calibration devices.

[0043] In some other embodiments, the plurality of torque loading components 12 may have different ranges for some torque loading components 12, and the torque loading components 12 may have the same range but different connecting parts 121.

[0044] It should be noted that the connecting part 121 of the torque loading component 12 may have different settings, specifically the mortise structure on the connecting part 121 corresponding to the tenon 203 may be different, or the size may be different, which is not specifically limited here.

[0045] like Figure 1 and Figure 3As shown, in some embodiments, the mounting mechanism 20 may include a distance adjustment component 21, a leveling component 22, and a clamping member 23. The clamping member 23 is disposed on the leveling component 22 and is used to clamp the torque wrench 2, applying a reaction force to the torque wrench 2 to cooperate with the torque loading mechanism 10, preventing the torque wrench 2 from rotating during the calibration process, thereby improving calibration accuracy. The leveling component 22 is disposed on the distance adjustment component 21 and is used to adjust the horizontal position of the torque wrench 2 so that it is in a horizontal state during the calibration process, ensuring that the wrench axis is perpendicular to the torque loading direction and eliminating gravity error. The distance adjustment component 21 is used to adjust the distance between the clamping member 23 and the torque loading mechanism 10, so that the mounting mechanism 20 can be adapted to install torque wrenches 2 of different lengths, further improving the versatility of the dial-type torque wrench automatic calibration device 1.

[0046] It should be noted that during operation, the clamping component 23 can be clamped at the tail 202 of the torque wrench 2, or at the middle position of the torque wrench 2, etc. The specific clamping position can be determined by cooperating with the torque loading mechanism 10 to assemble the torque wrench 2, and is not specifically limited here.

[0047] Specifically, the clamping component 23 can be implemented using existing clamping structures such as adjustable wing nut clamps, for example, by rotating the nut of the clamp to clamp the tail 202 of the torque wrench 2, etc., without specific limitations.

[0048] Furthermore, the mounting mechanism 20 may also include a mounting plate 24. The distance adjustment component 21, the leveling component 22, and the clamping component 23 are all mounted on the mounting plate 24. A clearance hole 411 may also be provided on the surface of the work platform 40. The mounting plate 24 can be fixed below the surface of the work platform 40, and part of the structure of the mounting mechanism 20 extends above the surface through the clearance hole 411 for mounting the torque wrench 2. This improves the cleanliness of the work platform 40 surface and also provides some protection for the mounting mechanism 20.

[0049] In some other embodiments, the mounting mechanism 20 may also be entirely mounted on the platform 40.

[0050] In some embodiments, the distance adjustment assembly 21 may include a first guide rail 211, a first movable seat 212, and a third drive member 213. The first guide rail 211 extends along a first direction X, the first movable seat 212 is movably disposed on the first guide rail 211 along the first direction X, and the third drive member 213 is electrically connected to a control mechanism 50 for driving the first movable seat 212 to move back and forth along the first guide rail 211 under the control of the control mechanism 50. The leveling assembly 22 is disposed on the first movable seat 212 such that the clamping member 23 located on the leveling assembly 22 can be movably disposed along the first movable seat 212 along the first direction X.

[0051] Thus, when assembling the torque wrench 2, for torque wrenches 2 of different lengths, the control mechanism 50 can control the third drive member 213 to drive the first moving seat 212 to move along the first guide rail 211, so as to adjust the distance between the clamping member 23 and the torque loading mechanism 10 along the first direction X to match the length of the torque wrench 2. When the tenon 203 of the head 201 of the torque wrench 2 is assembled into the mortise of the connecting member 121 of the corresponding torque loading assembly 12, the clamping member 23 can be clamped at the tail 202 of the torque wrench 2.

[0052] It should be noted that the first guide rail 211, the first moving seat 212 and the third driving component 213 can be implemented using existing combination structures such as a motor and a ball screw, which will not be elaborated on here.

[0053] In some embodiments, the leveling assembly 22 may include a second guide rail 221, a second movable seat 222, and a fourth driving member 223. The second guide rail 221 extends along a second direction Y, and the second movable seat 222 is movably disposed on the second guide rail 221 along the second direction Y. The fourth driving member 223 is electrically connected to a control mechanism 50 and is used to drive the second movable seat 222 to move back and forth along the second guide rail 221 under the control of the control mechanism 50. The clamping member 23 is disposed on the second movable seat 222 and is movably disposed along the second direction Y, following the second movable seat 222.

[0054] Wherein, the first direction X is perpendicular to the second direction Y. For example, in Figure 1 In the embodiment shown, the first direction X is the horizontal direction, and the second direction Y is the vertical direction.

[0055] By cooperating with the distance adjustment component 21 and the leveling component 22, the clamping member 23 can be movably positioned along the first direction X and the second direction Y, respectively. Thus, based on the structure of the torque wrench 2, the positional relationship between the clamping member 23 and the torque loading mechanism 10 can be flexibly adjusted to further improve the versatility of the dial-type torque wrench automatic calibration device 1.

[0056] Furthermore, the leveling assembly 22 may also include a leveling detection element 224 for verifying the levelness of the torque wrench 2.

[0057] When assembling the torque wrench 2, first assemble the torque wrench 2 onto the clamping member 23 and the torque loading mechanism 10 after adjustment. Then place the horizontal detection member 224 on the torque wrench 2 and determine whether the torque wrench 2 is horizontal by observing the detection status displayed by the horizontal detection member 224. When the horizontal detection member 224 indicates that the torque wrench 2 is not horizontal, the control mechanism 50 can control the fourth driving member 223 to adjust the position of the second moving seat 222 along the second direction Y, thereby adjusting the vertical position of the clamping member 23. This continues until the horizontal detection member 224 indicates that the torque wrench 2 is horizontal.

[0058] It is important to understand that the horizontal position of the torque wrench 2 will affect the accuracy of the calibration during the calibration process.

[0059] By setting a horizontal detection element 224, it is possible to accurately detect whether the torque wrench 2, which is mounted on the clamping member 23 and the torque loading mechanism 10, is in a horizontal state. By setting a second guide rail 221 and a second movable seat 222, the position of the clamping member 23 along the second direction Y can be adjusted, thereby cooperating with the horizontal detection element 224 to ensure that the torque wrench 2 is in a horizontal state during the detection process, so as to further improve the accuracy of the detection.

[0060] It should be noted that the level detection component 224 can be implemented using existing level detection instruments such as gyroscopes and electronic levels, and no specific limitation is made here. The level detection component 224 can be flexibly and independently set based on its detection method, allowing operators to judge the level detection result by observation (for example, when the gyroscope value shows 0, it indicates that the torque wrench 2 is in a level state). The level detection component 224 can also be electrically connected to the control mechanism 50 based on its detection method, outputting the detection result to the control mechanism 50. No specific limitation is made here.

[0061] It should be noted that the second guide rail 221, the second moving seat 222, and the fourth driving component 223 can be implemented using existing combination structures such as a motor and a ball screw, which will not be elaborated on here.

[0062] like Figure 1 and Figure 4As shown, in some embodiments, the automatic reading mechanism 30 may include a camera 31, a position adjustment component 32, and a position feedback component 33. Both the camera 31 and the position feedback component 33 are mounted on the position adjustment component 32. The position adjustment component 32 is mounted on the work platform 40 and is used to adjust their positions along the first direction X, aligning them with the dial 3 of the torque wrench 2. The camera 31 is electrically connected to the control mechanism 50 and is movably positioned along the first direction X under the drive of the position adjustment component 32, for capturing the values ​​displayed on the dial 3 of the torque wrench 2. The position feedback component 33 provides feedback on the position of the camera 31, ensuring that the camera 31 is directly above the dial 3 during the verification process.

[0063] Specifically, the position adjustment component 32 is positioned on one side of the first guide rail 211 along the third direction Z. The camera 31 is mounted on the position adjustment component 32 via a connecting plate or connecting rod, and is spaced apart from the distance adjustment component 21 along the second direction Y. The lens of the camera 31 is positioned downwards, and its axis is coplanar with the center line of the dial 3 and tenon 203 of the torque wrench 2 to be calibrated.

[0064] Among them, the third direction X is perpendicular to the first direction X and the second direction Y.

[0065] Thus, when the torque wrench 2 is assembled to the torque loading mechanism 10 and the mounting mechanism 20, the camera 31 can be positioned directly above the torque wrench 2. Since the torque wrench 2 extends along the first direction X at this time, the camera 31 can be moved along the first direction X by the position adjustment component 32, so that the camera 31 is finally positioned directly above the dial 3, thereby reducing visual errors in the shooting.

[0066] During the verification process, the control mechanism 50 can receive the photos taken by the camera 31 and the torque value detected by the torque sensor 122, and combine them with image processing algorithms (such as OCR digital recognition) to automatically read the torque value on the dial and compare it with the value detected by the torque sensor 122 to verify the torque wrench 2.

[0067] By setting up camera 31, automatic reading and numerical comparison of dial 3 can be achieved during the verification process, further improving the automation and efficiency of the verification process. It also avoids visual errors caused by manual reading by operators, thereby further improving verification accuracy.

[0068] Furthermore, the automatic reading mechanism 30 may also include a fixing member 34, and the position adjustment component 32 is installed on the work platform 40 through the fixing member 34, so as to flexibly set the relative position of the position adjustment component 32 and the distance adjustment component 21.

[0069] In some other embodiments, the position adjustment component 32 may also be positioned directly above the first guide rail 211 via a fastener 34.

[0070] In some other embodiments, the dial-type torque wrench automatic calibration device 1 may not have an automatic reading mechanism 30. The operator can manually read and record the values ​​displayed on the dial 3 by visual inspection, taking pictures, or other means.

[0071] In some embodiments, the position adjustment assembly 32 may include a third guide rail 321, a third movable seat 322, and a fifth driving member 323. The third guide rail 321 extends along a first direction X, and the third movable seat 322 is movably disposed on the third guide rail 321 along the first direction X. The fifth driving member 323 is electrically connected to a control mechanism 50 and is used to drive the third movable seat 322 to move back and forth along the third guide rail 321 under the control of the control mechanism 50. The camera 31 is disposed on the third movable seat 322 and can be movably disposed along the first direction X following the third movable seat 322.

[0072] Specifically, the third guide rail 321 can be mounted on the fixing member 34 and positioned above and to the side of the first guide rail 211 by the fixing member 34, and spaced apart from the first guide rail 211 along the second direction Y. In this way, the camera 31 extends along the third direction Z through the connecting structure so that it is positioned directly above the installed torque wrench 2.

[0073] Thus, before verification, the third moving seat 322 can be controlled by the control mechanism 50 to move the camera 31 along the third guide rail 321 until the camera 31 is directly above the dial 3.

[0074] It should be noted that the third guide rail 321, the third moving seat 322, and the fifth driving component 323 can be implemented using existing combination structures such as a motor with a ball screw or a slide motor with a linear slide, which will not be elaborated on here.

[0075] In some other embodiments, the third guide rail 321 may also be directly mounted on the work platform 40, in the same position as the first guide rail 211 in the second direction Y. The camera 31 extends along the second direction Y and the third direction Z via a connecting structure, positioning it directly above the installed torque wrench 2.

[0076] In some embodiments, the position feedback component 33 may include at least two displacement sensors, each electrically connected to the control mechanism 50, for detecting the relative positional relationship between the camera 31 and the dial 3. The displacement sensors are mounted on a third movable base 322 to move back and forth synchronously with the camera 31 along the first direction X.

[0077] Specifically, each displacement sensor is positioned on one side of the clamping member 23 along the third direction Z, and its position in the second direction Y corresponds to the position of the dial 3 of the installed torque wrench 2 in the second direction Y. At least two displacement sensors are symmetrically arranged on opposite sides of the axis of the camera 31 along the first direction X.

[0078] It is important to understand that the dial 3 of the torque wrench 2 is disc-shaped and positioned above the main body of the torque wrench 2 along the second direction Z. Therefore... Figure 4 As shown, after the torque wrench 2 is assembled to the torque loading mechanism 10 and the mounting mechanism 20, along the first direction X, two symmetrical points on either side of the axis of any dial 3 are equidistant from the third guide rail 321 along the third direction Z. Two displacement sensors symmetrically arranged on opposite sides of the axis of the camera 31 along the first direction X are equidistant from the main body of the torque wrench 2 along the third direction Z.

[0079] For example in Figure 4 In the illustrated embodiment, the position feedback component 33 includes two displacement sensors, which are hereby defined as a first displacement sensor 331 and a second displacement sensor 332, respectively, and are symmetrically spaced along the first direction X relative to the axis of the camera 31.

[0080] When the torque wrench 2 is assembled to the torque loading mechanism 10 and the mounting mechanism 20, during the process of controlling the third moving seat 322 to move along the first direction X, when the displacement sensor moves to the position of the dial 3, the value detected by the displacement sensor will change because the dial 3 is circular. When the first displacement sensor 331 and the second displacement sensor 332 are equal and neither is equal to 0, it indicates that the two are symmetrically arranged with respect to the axis of the dial 3 in the first direction X, and the camera 31 is located directly above the dial 3.

[0081] The control mechanism 50 can control the fifth drive unit 323 to drive the third moving seat 322 based on the value of the displacement sensor, thereby realizing the automatic adjustment of the position of the camera 31.

[0082] It should be noted that the displacement sensor can be optionally mounted on the third movable seat 322 via a connecting structure such as a connecting plate or a connecting rod, based on factors such as the relative position of the position adjustment component 32 and the distance adjustment component 21 and its own structural dimensions. No specific limitation is made here.

[0083] It should be noted that the displacement sensor can be either an existing contact displacement sensor or a non-contact displacement sensor, and no specific limitation is made here. When a contact displacement sensor is used, the position of the position adjustment component 32 must ensure that when the camera 31 is directly above the dial 3, the displacement sensor must be in contact with the dial 3 and produce a numerical change.

[0084] In some other embodiments, the number of displacement sensors may also be set to three, four, five, or more.

[0085] In other embodiments, for dials 3 of other shapes and sizes, the control mechanism 50 can be configured such that when the reading difference of at least two displacement sensors corresponds to the structure of the dial 3, the control mechanism 50 responds to the camera 31 moving to directly above the dial 3.

[0086] In some other embodiments, the automatic reading mechanism 30 may not include a position feedback component 33. Operators can manually determine whether the camera 31 has reached its correct position through visual inspection or other means.

[0087] It should be understood that the verification device set up by the relevant technology needs to be operated by hand-cranked screw or manual hydraulic method, which has problems such as unstable torque loading, poor structural stability, and easy shaking of torque wrench 2 during the verification process, which affects the verification accuracy. It also has problems such as low verification efficiency, and it takes 10 to 15 minutes to verify a single torque wrench 2.

[0088] There is also a calibration device that can perform semi-automatic torque calibration. However, it relies on a digital interface to obtain the torque value of torque wrench 2. For the dial-type torque wrench 2, there is no data output interface, making it difficult to transmit the torque value of torque wrench 2 to the control mechanism. Furthermore, in this semi-automatic calibration process, reading and data processing still require manual intervention.

[0089] This application, through the cooperation of the torque loading mechanism 10, the mounting mechanism 20, and the automatic reading mechanism 30, can improve the automation level of calibration, eliminating the need for manual operation by operators during both calibration and value reading processes. It can also improve calibration efficiency, reducing the calibration time of a single torque wrench 2 by one-fifth. Furthermore, it can improve calibration accuracy, reducing calibration errors to within ±1%. By setting the automatic reading mechanism 30, accurate acquisition of the torque value of the dial-type torque wrench 2 can be achieved.

[0090] like Figure 1 As shown, in some embodiments, the work platform 40 may be in the shape of a rectangular frame with a rectangular tabletop at the top for setting up other mechanisms and facilitating operation by workers.

[0091] Furthermore, the dial-type torque wrench automatic calibration device 1 may also include multiple support feet 42, which are spaced apart at the bottom of the work platform 40 and are telescopically arranged along the second direction Y, for adjusting the level of the work platform 40 and avoiding the impact of the tilt of the platform on the calibration accuracy.

[0092] During the process of adjusting the level of the tabletop, the leveling component 222 can be placed on the tabletop to help adjust the level of the tabletop.

[0093] It should be noted that the support leg 42 can be an electronic support structure, which, by being electrically connected to the control mechanism 50, enables electronic adjustment of the table's level. Alternatively, the support leg 42 can be a non-electronic support structure, allowing operators to manually adjust its support height.

[0094] In some other embodiments, the work platform 40 may also be in other shapes such as a box, and its table surface may be in other shapes such as a circle, polygon, ellipse, or irregular shape.

[0095] In some embodiments, the control mechanism 50 may include an industrial computer 51 and an input device 52. The industrial computer 51 is electrically connected to the electronic components in each mechanism to control the operation of each mechanism. The input device 52 is electrically connected to the industrial computer 51 and is used for operation by personnel.

[0096] exist Figure 1 In the illustrated embodiment, the input device 52 may include a mouse, keyboard, etc.

[0097] Furthermore, the industrial control computer 51 can also automatically record and archive verification data to ensure data traceability.

[0098] In some other embodiments, the input device 52 may also be a touch-screen display or the like.

[0099] It should be noted that the control mechanism 50 can be implemented using existing technologies, which will not be elaborated on here.

[0100] During the verification process, the support height of the support foot 42 can be adjusted by using the level detection component 224 to ensure that the platform surface of the work platform 40 is level.

[0101] Furthermore, based on the torque value to be verified of the torque wrench 2, the control mechanism 50 controls the first driving component 112 to drive the turntable 111 to rotate, so as to select the torque loading component 12 with the appropriate range.

[0102] Furthermore, based on the length of the torque wrench 2 to be verified, the control mechanism 50 controls the third driving member 213 to drive the first moving seat 212 to move along the first guide rail 211, so that the spacing between the clamping member 23 and the connecting member 121 along the first direction X is adapted to the length of the torque wrench 2.

[0103] Furthermore, the torque wrench 2 to be checked is assembled, so that the tenon 203 of its head 201 is fitted into the mortise of the connector 121, and its tail 202 is clamped and fixed at the clamping member 23.

[0104] Furthermore, the level detection component 224 is placed on the torque wrench 2, and the control mechanism 50 controls the fourth drive component 223 to drive the second moving seat 222 to move along the second guide rail 221 until the level detection component 224 detects that the torque wrench 2 is in a level state.

[0105] Furthermore, the control mechanism 50 controls the fifth driving element 323 to drive the third moving seat 322 to move along the third guide rail 321 until the values ​​of the two displacement sensors are equal and not zero.

[0106] Furthermore, the second drive member 123 is driven by the control mechanism 50, so that the connector 121 outputs torque to the tenon 203 of the torque wrench 2.

[0107] Furthermore, the control mechanism 50 acquires the readings of the camera 31 on the dial 3 and the torque sensor 122 on the torque, and compares the two values ​​to complete the verification.

[0108] Furthermore, the control mechanism 50 drives the second drive component 123 to unload the torque of the connecting component 121 on the torque wrench 2, disassembles the calibrated torque wrench 2, and resets the other mechanisms.

[0109] Understandably, the above-mentioned technical features can be used in any combination without restriction.

[0110] The above embodiments merely illustrate specific implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this application's patent. It should be noted that those skilled in the art can freely combine the above technical features without departing from the concept of this application, and can also make several modifications and improvements, all of which fall within the protection scope of this application. Therefore, any equivalent transformations and modifications made within the scope of the claims of this application should be covered by the claims of this application.

Claims

1. An automatic calibration device for a dial-type torque wrench, characterized in that, include: The torque loading mechanism (10) includes a rotating component (11) and a plurality of different torque loading components (12), wherein the plurality of torque loading components (12) are arranged circumferentially on the rotating component (11); The mounting mechanism (20), spaced apart from the torque loading mechanism (10) along a first direction, includes: The distance adjustment assembly (21) includes a first guide rail (211) and a first movable seat (212) movably disposed on the first guide rail (211) along a first direction. A leveling assembly (22), disposed on the first movable base (212), includes a second guide rail (221) and a second movable base (222) movably disposed on the second guide rail (221) along a second direction; and A clamping member (23) is disposed on the second movable seat (222); and Automatic reading mechanism (30) for reading the value of the dial (3) of the torque wrench (2); Wherein, the first direction is perpendicular to the second direction.

2. The automatic calibration device for dial-type torque wrenches according to claim 1, characterized in that, The rotating assembly (11) includes a rotatably mounted turntable (111); a plurality of torque loading assemblies (12) are disposed on the turntable (111) and are spaced circumferentially along the axis of rotation of the turntable (111); The torque loading assembly (12) includes a torque sensor (122), a second drive member (123), and a connector (121) for connecting a tenon (203) of a torque wrench (2). The torque sensor (122) is disposed between the second drive member (123) and the connector (121).

3. The automatic calibration device for dial-type torque wrenches according to claim 2, characterized in that, At least some of the torque loading components (12) have different ranges; and / or At least some of the connecting parts (121) of the torque loading assembly (12) are different.

4. The automatic calibration device for dial-type torque wrenches according to claim 1, characterized in that, The leveling assembly (22) also includes a leveling detection element (224) for verifying the leveling status of the torque wrench (2).

5. The automatic calibration device for dial-type torque wrenches according to claim 1, characterized in that, The automatic reading mechanism (30) includes a camera (31) movably disposed along the first direction, and the camera (31) and the distance adjustment component (21) are spaced apart along the second direction.

6. The automatic calibration device for dial-type torque wrenches according to claim 5, characterized in that, The automatic reading mechanism (30) further includes a position adjustment component (32); the position adjustment component (32) includes a third guide rail (321) and a third movable seat (322) movably disposed on the third guide rail (321) along the first direction, and the camera (31) is disposed on the third movable seat (322).

7. The automatic calibration device for dial-type torque wrenches according to claim 5, characterized in that, The automatic reading mechanism (30) further includes a position feedback component (33) for detecting the positional relationship between the camera (31) and the dial (3); the position feedback component (33) and the camera (31) are arranged to move synchronously along the first direction.

8. The automatic calibration device for dial-type torque wrenches according to claim 7, characterized in that, The position feedback component (33) includes at least two displacement sensors; the at least two displacement sensors are symmetrically arranged on both sides of the axis of the camera (31) along the first direction, and arranged on one side of the clamping member (23) along the third direction; The third direction is perpendicular to the first direction and the second direction.

9. The automatic calibration device for dial-type torque wrenches according to any one of claims 1 to 8, characterized in that, It also includes a working platform (40) and multiple support feet (42); the multiple support feet (42) are spaced apart at the bottom of the working platform (40) and are telescopically arranged along the second direction; the torque loading mechanism (10), the installation mechanism (20) and the automatic reading mechanism (30) are respectively arranged on the working platform (40).

10. The automatic calibration device for a dial-type torque wrench according to any one of claims 1 to 8, characterized in that, It also includes a control mechanism (50), which is electrically connected to the torque loading mechanism (10), the mounting mechanism (20) and the automatic reading mechanism (30), respectively.

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