A wrench clutch automatic torque inspection and calibration all-in-one machine and working method

Abstract

The application provides a wrench clutch automatic torque inspection and calibration all-in-one machine and a working method. The all-in-one machine comprises a machine body, a positioning mechanism, a centering mechanism, a torque adjusting mechanism, a torque testing mechanism and a control mechanism. The centering mechanism is arranged directly above the torque testing mechanism, and the center axes of the two coincide. The centering mechanism provides rotary driving force and cooperates with the torque testing mechanism to perform running-in on the product. The torque adjusting mechanism is used for adjusting the torque of the wrench clutch and comprises an adjusting mechanism and a suspension mechanism. The adjusting mechanism is arranged on the suspension mechanism and can adjust the spring compression amount of the wrench clutch. The suspension mechanism is movably connected with the workbench. The torque testing mechanism is used for torque inspection. The control mechanism comprises a control panel and a man-machine interface. The application adopts intelligent and automatic operation, integrates torque inspection, calibration, running-in and screening, has strong compatibility, reduces production cost and improves production quality and production efficiency.

Description

Technical Field

[0001] This invention relates to the field of wrench and clutch testing technology, and more particularly to an integrated automatic torque testing and calibration machine for wrenches and clutches. This invention also relates to a method for operating the integrated automatic torque testing and calibration machine for wrenches and clutches. Background Technology

[0002] Driven by the widespread application of standard hardware components, rotary handheld power tools have seen further development, resulting in a surge in production capacity. Rotary handheld power tools, depending on their connectors, can be electric drills, screwdrivers, hammer drills, etc. The key component controlling torque within the connector is the wrench clutch. Given the role of the wrench clutch, its torque value is crucial; too low or too high a value will negatively impact overall usability. Therefore, it is necessary to adjust and test the torque of the wrench clutch, and adjust the torque of a qualified wrench clutch to the calibrated position.

[0003] Currently, torque testing of wrenches is mostly done manually. However, manual testing is labor-intensive and inefficient. Furthermore, the instability of manual operation leads to different torque values ​​for products. Manual calibration and break-in are cumbersome, resulting in unstable quality and failing to guarantee effective accuracy and timeliness. This reduces the production efficiency and product qualification rate of enterprises, greatly increases production costs, and is not suitable for mass production. Summary of the Invention

[0004] The present invention aims to provide an integrated automatic torque testing and calibration machine for wrenches and clutches, in order to overcome the shortcomings of the existing technology.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: an integrated automatic torque testing and calibration machine for a wrench clutch, comprising a machine body, a positioning mechanism, a centering mechanism, a torque adjustment mechanism, a torque testing mechanism, and a control mechanism. The machine body is provided with a worktable. The positioning mechanism, centering mechanism, torque adjustment mechanism, and torque testing mechanism are all located on the worktable. The centering mechanism is located directly above the torque testing mechanism, and their central axes coincide. The torque testing mechanism has a positioning mechanism on one side and a torque adjustment mechanism on the opposite side. The centering mechanism provides rotational driving force and cooperates with the torque testing mechanism to run-in the wrench clutch. The torque adjustment mechanism is used to adjust the torque of the wrench clutch and... The torque position of the wrench clutch is calibrated by adjusting the spring compression of the wrench clutch. This includes a suspension mechanism and an adjustment mechanism. The adjustment mechanism is mounted on the suspension mechanism and is used to adjust the spring compression of the wrench clutch. The suspension mechanism is movably connected to the worktable. The adjustment mechanism, through the suspension mechanism, can adapt to the spring compression, i.e., the vertical movement of the adjustment mechanism, ensuring it remains accurately connected to the adjustment position on the wrench clutch and preventing the weight of the torque adjustment mechanism from affecting the torque detection of the wrench clutch. The torque testing mechanism is used to test the torque value of the wrench clutch under different torque conditions. The control mechanism includes a control panel and a human-machine interface (HMI) on the machine body. The control panel has equipment operation buttons such as a power switch, start button, stop button, reset button, and emergency stop button. The HMI is used for torque setting, detection display, alarm prompts, and selection of different product tests.

[0006] Furthermore, in the aforementioned automatic torque testing and calibration machine for wrenches and clutches, the positioning mechanism includes a positioning seat and a clamping cylinder. The positioning seat is located above the worktable, and the positioning seat has a chamber for positioning the wrench and clutch inside. The clamping cylinder is located on one side of the positioning seat and is fixedly connected to the worktable through a cylinder seat. The output end of the clamping cylinder has a clamping plate that cooperates with the wrench and clutch, and the opposite sides of the two clamping plates have clamping parts that cooperate with the outer side of the wrench and clutch.

[0007] Furthermore, in the aforementioned automatic torque testing and calibration machine for wrenches and clutches, the centering mechanism includes a support, a servo motor, a centering clamp, and a lifting module. The support is fixed above the worktable, and the lifting module, which is a ball screw module, is fixed on the support. The output end of the lifting module is connected to the servo motor, and the output end of the servo motor is connected to the centering clamp. The bottom of the centering clamp is provided with a clamping fixture connected to the wrench clutch.

[0008] Furthermore, in the aforementioned automatic torque testing and calibration machine for wrenches and clutches, the suspension mechanism includes a suspension plate, guide columns, spring seats, and constant force springs. The suspension plate is movably connected to the worktable, and guide columns are connected to its four bottom corners. The lower ends of the guide columns pass through the worktable and are slidably connected to it. Linear bearings are fitted on the outer sides of the guide columns, and the guide columns are slidably connected to the worktable via the linear bearings. A limiting plate is provided at the bottom of the guide columns. A spring seat fixed to the worktable is provided on one side of the suspension plate. Multiple constant force springs are arranged in parallel on the spring seat, and the constant force springs are connected to the suspension plate. The constant force springs are steel strip constant force springs, with one end connected to the spring seat and the other end connected to the suspension plate. The constant force springs maintain a certain elastic force throughout all strokes, with a short preload stroke, ensuring the stability of the suspension plate.

[0009] Furthermore, in the aforementioned automatic torque testing and calibration machine for wrenches and clutches, the suspension mechanism also includes a lower support plate and a clamping assembly. The clamping assembly fixes the suspension plate, changing it from a flexible connection (suspended state) to a rigid connection. The lower support plate is located below the worktable and is fixedly connected to the worktable via a support sleeve. The lower support plate has through holes for the guide posts to pass through. The clamping assembly is located on the lower support plate and includes two clamping units that clamp diagonally arranged guide posts. Each clamping unit includes a clamping cylinder and a clamping block. The clamping cylinder is fixed to the lower support plate, and its output end has a clamping block that mates with the guide post. The opposite sides of the two clamping blocks have arc-shaped clamping parts that mate with the outer sides of the guide posts. After the adjusting mechanism adjusts the spring compression and retracts, the clamping assembly can be activated to fix the position of the suspension plate, facilitating the subsequent adjustment of the bit and the wrench clutch.

[0010] Furthermore, in the aforementioned automatic torque testing and calibration machine for wrenches and clutches, the adjustment mechanism is mounted on a suspension plate and includes a fixed base, a second servo motor, a reducer, an adjustment bit, and a transverse movement assembly. The fixed base is fixed to the transverse movement assembly, and the reducer is connected to the second servo motor and both are mounted on the fixed base. The output end of the reducer is connected to a fixed fixture, and the adjustment bit is fixed on the fixed fixture. The transverse movement assembly includes a slide rail and two opposing transverse movement units. The slide rail is fixed to the suspension plate, and the fixed base is fixed to the slider of the slide rail and slidably connected to the slide rail. Each transverse movement unit includes a transverse movement cylinder and a push plate. The push plate is fixed to the fixed base, and the output end of the transverse movement cylinder is movably connected to the push plate. Preferably, the suspension plate also provides a limiting plate and a buffer to restrict the stroke of the transverse movement assembly. The limiting plate is located at one end of the slide rail, and the buffer is located on the side of one of the push plates away from the limiting plate. Preferably, the torque adjustment mechanism further includes a laser rangefinder and an angle sensor. The laser rangefinder is mounted on the lower support plate and can monitor the movement distance of the suspension plate. The angle sensor is mounted on the fixed base and cooperates with the sensing plate mounted on the fixed fixture to detect the angle after the bit stops, so that it can accurately align with the adjustment position on the wrench clutch.

[0011] Furthermore, in the aforementioned automatic torque testing and calibration integrated machine for wrenches and clutches, the torque testing mechanism includes a testing mechanism comprising a lower front support, a lower rear support, a flange bearing seat, a torque rotating shaft, and a dynamic torque sensor. The lower front support is fixed to the front side below the worktable, the lower rear support is fixed to the rear side below the worktable, the flange bearing seat is fixed to the worktable, the torque rotating shaft is sleeved in the flange bearing seat and rotatably connected thereto, and a connector inserted into a positioning seat is fixed at the top of the torque rotating shaft. The connector is provided with a hexagonal column connected to the wrench clutch, which can orient the wrench clutch in the X and Z directions. The wrench clutch can rotate with the torque rotating shaft. A coupling is provided at the bottom of the torque rotating shaft and is connected to the dynamic torque sensor through the coupling. The dynamic torque sensor is connected to the lower rear support through a floating pad.

[0012] Furthermore, in the aforementioned automatic torque testing and calibration integrated machine for wrenches and clutches, the torque testing mechanism further includes a braking mechanism. The braking mechanism includes a lower connecting plate, a magnetic powder brake, a clamping cylinder, and friction plates. The lower connecting plate connects the lower front support and the lower rear support. The magnetic powder brake is fixed below the lower connecting plate and connected to the end of the dynamic torque sensor away from the torque rotation shaft via a second coupling. The magnetic powder brake is coaxially arranged with the torque rotation shaft. Two symmetrically arranged clamping cylinders are provided on the outer side of the second coupling. The clamping cylinders are fixed above the lower connecting plate, and their output ends are provided with clamping plates. The clamping plates are provided with friction plates that cooperate with the outer side of the second coupling.

[0013] Furthermore, the aforementioned automatic torque testing and calibration machine for wrenches and clutches includes a lower frame and a soundproof cover located above the lower frame. The lower frame has protective plates on all four sides, electronic components on the inner side, and heat dissipation holes and a cooling fan on the protective plates. The lower frame also has casters and adjustable feet at the four corners of its bottom. The soundproof cover covers the workbench, enclosing the components above the workbench for sound insulation and noise reduction. The soundproof cover has a protective door for installation. The control panel is located on the protective plate on the front side of the lower frame, and the human-machine interface is located on one side of the soundproof cover.

[0014] This invention also provides a method for operating an integrated automatic torque testing and calibration machine for wrenches and clutches, comprising the following steps:

[0015] S1. Place the wrench clutch into the positioning seat, connect its lower end to the connector, and then activate the clamping cylinder. The clamping cylinder clamps the outside of the wrench clutch, positioning the wrench clutch.

[0016] S2. Manually move the torque adjustment mechanism and insert the adjusting bit into the spring compression adjustment position on the wrench clutch;

[0017] S3. The brake mechanism is activated, the clamping cylinder clamps the second coupling, the lifting module is activated, driving the centering clamping part to move down, the clamping fixture is inserted into the upper end of the wrench clutch and connected to the wrench clutch, the clamping cylinder is released, and the clamping of the wrench clutch is released.

[0018] S4. Set the torque value to 1, adjust the spring compression, start the adjustment mechanism, adjust the spring compression of the wrench clutch to the set maximum torque value, then the adjustment mechanism returns to the safe position, the clamping component starts, the clamping cylinder clamps the guide column, and positions the suspension plate.

[0019] S5. Torque test of torque value one: When the servo motor starts, the centering clamping part drives the wrench clutch to rotate. The torque testing mechanism monitors the torque data of the wrench clutch at the set maximum value and uploads it to the human machine.

[0020] S6. The HMI processes the torque data and generates a torque data table and graph. When processing the torque data, the HMI will alarm if the product does not reach the torque value, indicating that the product is unqualified and requiring manual unloading. If the test is qualified, the next step will begin.

[0021] S7. Set torque value two, adjust spring compression, start the lateral movement component, drive the adjusting bit of the adjusting mechanism to insert into the spring compression adjustment position on the wrench clutch, then the clamping component is released, and the suspension plate is in a suspended state; start the adjusting mechanism, adjust the spring compression of the wrench clutch to the set minimum torque value, then the adjusting mechanism returns to the safe position, the clamping component is started, the clamping cylinder clamps the guide column, and positions the suspension plate;

[0022] S8. Torque test of torque value two: When the servo motor is started, the centering clamping part drives the wrench clutch to rotate. The torque testing mechanism monitors the torque data of the wrench clutch at the set minimum value and uploads it to the human machine.

[0023] S9. The HMI processes the torque data and generates a torque data table and graph. When processing the torque data, the HMI will alarm if the product does not reach the torque value and the product is unqualified, requiring manual unloading. If the product passes the test, the next step will begin.

[0024] S10. Follow steps S7-S9 to complete the torque test of the wrench clutch at the intermediate torque value (torque value three);

[0025] S11, Calibration position, the transverse component starts, driving the adjustment bit to insert into the spring compression adjustment position on the wrench clutch, and then the clamping component is released; the adjustment mechanism starts, adjusting the spring compression of the wrench clutch to the calibration position, and then the adjustment mechanism returns to the safe position, the clamping component starts, the clamping cylinder clamps the guide column, and the suspension plate is positioned;

[0026] S12, break-in: the brake mechanism is released, the clamping cylinder releases the second coupling, the servo motor starts, the centering clamping part drives the wrench clutch to rotate, and the wrench clutch is broken in.

[0027] S13. Calibration torque test: When the speed of the wrench clutch reaches the set value, the brake mechanism is activated again, the clamping cylinder clamps the coupling two, the torque test mechanism monitors the torque data and uploads it to the PC, and the human-machine interface processes the torque data to generate a torque data table and curve.

[0028] S14. If the calibration torque test fails, the manual alarm will indicate that the product is unqualified, and the material will be manually unloaded. After the calibration torque test passes, the wrench clutch will be manually removed and placed into the finished product box.

[0029] Compared with the prior art, the beneficial effects of the present invention are: it adopts intelligent and automated operation, integrates torque testing, torque position calibration, break-in, and screening into one, has strong compatibility, can eliminate manual operations in multiple links, reduce production costs, improve production quality and efficiency, and adapt to the ever-increasing production capacity. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the external structure of the automatic torque testing and calibration machine for wrenches and clutches of the present invention.

[0032] Figure 2 This is a partial structural diagram of the automatic torque testing and calibration machine for wrenches and clutches of the present invention. Figure 1 ;

[0033] Figure 3 This is a partial structural diagram of the automatic torque testing and calibration machine for wrenches and clutches of the present invention. Figure 2 ;

[0034] Figure 4 This is a schematic diagram of the centering clamping component of the automatic torque testing and calibration integrated machine for wrenches and clutches of the present invention.

[0035] Figure 5 This is a schematic diagram of the torque adjustment mechanism of the automatic torque testing and calibration integrated machine for wrenches and clutches of the present invention. Figure 1 ;

[0036] Figure 6 This is a schematic diagram of the torque adjustment mechanism of the automatic torque testing and calibration integrated machine for wrenches and clutches of the present invention. Figure 2 ;

[0037] Figure 7 This is a schematic diagram of the torque testing mechanism of the automatic torque testing and calibration machine for wrenches and clutches of the present invention. Figure 1 ;

[0038] Figure 8 for Figure 7 The left view;

[0039] In the diagram: 1. Machine body; 11. Workbench; 12. Lower frame; 121. Protective plate; 122. Casters; 123. Adjustable feet; 13. Soundproof cover; 131. Install protective door;

[0040] 2. Positioning mechanism; 21. Positioning seat; 22. Clamping cylinder; 23. Cylinder seat; 24. Clamping plate;

[0041] 3. Centering mechanism; 31. Support; 32. Servo motor 1; 33. Centering clamping component; 331. Clamping fixture; 34. Lifting module;

[0042] 4. Torque adjustment mechanism; 41. Suspension mechanism; 411. Suspension plate; 412. Guide column; 413. Spring seat; 414. Constant force spring; 415. Limiting plate; 416. Lower support plate; 417. Clamping cylinder; 418. Clamping block; 419. Support sleeve; 42. Adjustment mechanism; 421. Fixed seat; 422. Servo motor II; 423. Reducer; 424. Adjusting bit; 425. Fixture; 426. Slide rail; 427. Lateral movement cylinder; 428. Push plate; 401. Laser rangefinder sensor; 402. Angle sensor; 403. Sensing plate;

[0043] 5. Torque testing mechanism; 51. Testing mechanism; 511. Lower front support; 512. Lower rear support; 513. Flange bearing housing; 514. Torque rotating shaft; 515. Dynamic torque sensor; 516. Connector; 517. Hexagonal column; 518. Coupling one; 52. Braking mechanism; 521. Lower connecting plate; 522. Magnetic powder brake; 523. Clamping cylinder; 524. Friction plate; 525. Coupling two; 526. Clamping plate;

[0044] 61. Control panel; 62. Human-machine interface. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Example 1

[0047] like Figure 1-8As shown, an automatic torque testing and calibration machine for a wrench clutch includes a body 1, a positioning mechanism 2, a centering mechanism 3, a torque adjustment mechanism 4, a torque testing mechanism 5, and a control mechanism. The body 1 has a worktable 11. The positioning mechanism 2, centering mechanism 3, torque adjustment mechanism 4, and torque testing mechanism 5 are all located on the worktable. The centering mechanism 3 is positioned directly above the torque testing mechanism 5, and their central axes coincide. The torque testing mechanism 5 has the positioning mechanism 2 on one side and the torque adjustment mechanism 4 on the opposite side. The centering mechanism 3 provides rotational driving force and cooperates with the torque testing mechanism 5 to break in the wrench clutch. The torque adjustment mechanism 4 includes a suspension mechanism 41 and an adjustment mechanism 42, used to adjust the torque of the wrench clutch and calibrate its torque position. Adjustment and calibration are achieved by adjusting the spring compression of the wrench clutch. The adjustment mechanism 42 is mounted on the suspension mechanism 41. The adjustment mechanism 42 is used to adjust the spring compression of the wrench clutch. The suspension mechanism 41 is movably connected to the worktable 11. The adjustment mechanism 42 can adapt to the spring compression through the suspension mechanism 41, that is, the vertical movement of the adjustment mechanism 42, ensuring that it can always be accurately connected to the adjustment position on the wrench clutch, and avoiding the influence of the self-weight of the torque adjustment mechanism 4 on the torque detection of the wrench clutch. The torque testing mechanism 5 is used to test the torque value of the wrench clutch under different torque conditions. The control mechanism includes a control panel 61 and a human-machine interface 62 mounted on the machine body 1. The control panel 61 is equipped with equipment operation buttons such as a power switch, start button, stop button, reset button, and emergency stop button for easy operation. The human-machine interface 62 is used for torque setting, detection display, alarm prompts, and selection of different product tests, and can automatically filter products. The torque adjustment mechanism 4 adjusts the product torque to the set maximum, minimum, and intermediate values, and tests the product torque at the set values, ensuring comprehensive testing. The centering mechanism 3, torque adjustment mechanism 4, torque testing mechanism 5, and control mechanism automatically test, calibrate, and screen the torque of the wrench clutch. It has strong compatibility, can eliminate manual operations in multiple steps, reduce production costs, improve production quality and efficiency, and adapt to the ever-increasing production capacity.

[0048] like Figure 1 As shown, the machine body 1 includes a lower frame 12 and a soundproof cover 13 located above the lower frame 12. The lower frame 12 has protective plates 121 on its four sides, and electronic components are located on the inner side of the lower frame. The protective plates 121 have heat dissipation holes and a cooling fan. The four corners of the bottom of the lower frame 12 are also equipped with casters 122 and adjustable feet 123 for easy movement and leveling. The soundproof cover 13 covers the workbench 11, covering the components above the workbench 11 for sound insulation and noise reduction. The soundproof cover 13 has a protective door 131 for easy loading and unloading. The control panel 61 is located on the protective plate 121 on the front side of the lower frame 12, and the human-machine interface 62 is located on one side of the soundproof cover 13.

[0049] Example 2

[0050] Based on the structure of Embodiment 1, such as Figure 2-3 As shown, the positioning mechanism 2 includes a positioning seat 21 and a clamping cylinder 22. The positioning seat 21 is located above the worktable 11, and its interior contains a chamber for a positioning wrench clutch. The clamping cylinder 22 is located on one side of the positioning seat 21 and is fixedly connected to the worktable 11 via a cylinder seat 23. The output end of the clamping cylinder 22 has a clamping plate 24 that engages with the wrench clutch. The opposite sides of the two clamping plates 24 have clamping portions that engage with the outer side of the wrench clutch. During positioning, the wrench clutch is inserted into the positioning seat 21, and then the clamping cylinder 22 is activated. The clamping plates 24 clamp the outer side of the product, completing the positioning.

[0051] like Figure 2-4 As shown, the centering mechanism 3 includes a support 31, a servo motor 32, a centering clamping component 33, and a lifting module 34. The support 31 is fixed above the worktable 11, and the lifting module 34 is fixed on the support 31. The lifting module 34 is a lead screw module driven by a servo motor. The output end of the lifting module 34 is connected to the servo motor 32, and the output end of the servo motor 32 is connected to the centering clamping component 33. The bottom of the centering clamping component 33 is provided with a clamping fixture 331 connected to a wrench clutch. The rotation of the clamping fixture 331 can drive the wrench clutch connected to it to rotate, and the clamping fixture 331 and the wrench clutch are elastically connected in the axial direction. The centering mechanism 3 is composed of a lead screw module and an absolute value servo motor, which has high precision and stable operation.

[0052] like Figure 2 , 3 As shown in Figures 5 and 6, the suspension mechanism 41 includes a suspension plate 411, guide columns 412, spring seats 413, and constant force springs 414. The suspension plate 411 is movably connected to the worktable 11, and guide columns 412 are connected to its four bottom corners. The lower end of the guide column 412 passes through the worktable 11 and is slidably connected to the worktable 11. A linear bearing is sleeved on the outside of the guide column 412, and it is slidably connected to the worktable 11 through the linear bearing. A limiting plate 415 is provided at the bottom of the guide column 412 to prevent the guide column 412 from falling out and to limit the stroke of the suspension plate 411. A spring seat 413 fixed on the worktable 11 is provided on one side of the suspension plate 411. A plurality of constant force springs 414 are arranged in parallel on the spring seat 413. In this embodiment, there are two constant force springs 414. The constant force springs 414 are connected to the suspension plate 411. The constant force spring 414 is a steel strip constant force spring, with one end connected to the spring seat 413 and the other end connected to the suspension plate 411. The constant force spring 414 maintains a certain elastic force in all strokes, and the preload stroke is short, which can ensure the stability of the suspension plate 411 during torque adjustment.

[0053] In the above structure, the suspension mechanism 41 also includes a lower support plate 416 and a clamping assembly. The clamping assembly can fix the suspension plate 411, changing it from a flexible connection (suspended state) to a rigid connection. The lower support plate 416 is located below the workbench 11 and is fixedly connected to the workbench 11 through a support sleeve 419. The lower support plate 416 has through holes for the guide column 412 to pass through. The clamping assembly is located on the lower support plate 416 and includes two clamping units that clamp the guide column 412 diagonally. The clamping unit includes a clamping cylinder 417 and a clamping block 418. The clamping cylinder 417 is fixed on the lower support plate 416. The output end of the clamping cylinder 417 is provided with a clamping block 418 that cooperates with the guide column 412. The opposite sides of the two clamping blocks 418 are provided with arc-shaped clamping parts that cooperate with the outer side of the guide column 412. After the adjusting mechanism 42 adjusts the spring compression and retracts, the clamping assembly can be activated. The two clamping units clamp the diagonally arranged guide columns 412, thereby fixing the position of the suspension plate 411, so as to facilitate the subsequent engagement of the adjusting bit 424 with the wrench clutch.

[0054] In addition, such as Figure 2 , 3 As shown in Figures 5 and 6, the adjustment mechanism 42 is mounted on the suspension plate 411 and includes a fixed base 421, a second servo motor 422, a reducer 423, an adjustment bit 424, and a transverse movement assembly. The fixed base 421 is fixed on the transverse movement assembly. The reducer 423 is connected to the second servo motor 422 and is also mounted on the fixed base 421. The fixed base 421 is also provided with a protective cover for the reducer 423 and the second servo motor 422. The output end of the reducer 423 is connected to a fixing fixture 4. 25. An adjusting bit 424 is fixed on the fixing fixture 425; the transverse movement assembly includes a slide rail 426 and two oppositely arranged transverse movement units. The slide rail 426 is fixed on the suspension plate 411, and the fixing seat 421 is fixed on the slider of the slide rail 426 and slidably connected to the slide rail 426. The transverse movement unit includes a transverse movement cylinder 427 and a push plate 428. The push plate 428 is fixed on the fixing seat 421, and the output end of the transverse movement cylinder 427 is movably connected to the push plate 428. Preferably, the suspension plate 411 is also provided with a limiting plate and a buffer to limit the stroke of the transverse movement assembly. The limiting plate is located at one end of the slide rail 426, and the buffer is located on the side of one of the push plates 428 away from the limiting plate.

[0055] In addition, the torque adjustment mechanism 4 also includes a laser rangefinder 401 and an angle sensor 402. The laser rangefinder 401 is mounted on the lower support plate 416 and can monitor the moving distance of the suspension plate 411. The angle sensor 402 is mounted on the fixed base 421 and cooperates with the sensing plate 403 mounted on the fixed fixture 425 to detect the angle after the adjustment bit 424 stops, so that it can accurately align with the adjustment position on the wrench clutch.

[0056] The two transverse cylinders 427 are a forward transverse cylinder 427 and a backward transverse cylinder 427, respectively. When the spring compression needs to be adjusted, the forward transverse cylinder 427 is activated to push the push plate 428. The push plate 428 drives the fixed seat 421 to move towards the positioning seat 21, and the adjusting bit 424 is inserted into the adjustment position of the wrench clutch. The rotation of the adjusting bit 424 drives the toothed ring on the wrench clutch to rotate, compressing or extending the spring, thereby adjusting the spring compression of the wrench clutch. During the adjustment process, as the spring compression or extension changes the height of the adjustment position, the position of the suspension plate 411 is adaptively adjusted to the height change through the suspension mechanism 41. After the adjustment is completed, the backward transverse cylinder 427 is activated, pushing the push plate 428 to move the fixed seat 421 backward to its original position, and the clamping assembly is activated to fix the suspension plate 411. The torque adjustment mechanism 4 adopts servo adjustment and adjusts smoothly, efficiently, safely and reliably by adaptively adjusting the displacement of the adjustment position during the adjustment process through the suspension mechanism.

[0057] like Figure 2 , 3 As shown in Figures 7 and 8, the torque testing mechanism 5 includes a testing mechanism 51, which includes a lower front support 511, a lower rear support 512, a flange bearing seat 513, a torque rotation shaft 514, and a dynamic torque sensor 515. The lower front support 511 is fixed to the front side below the worktable 11, the lower rear support 512 is fixed to the rear side below the worktable 11, the flange bearing seat 513 is fixed on the worktable 11, and the torque rotation shaft 514 is sleeved in the flange bearing seat 513 and connected to it. The torque rotating shaft 514 is rotaryly connected, with a connector 516 fixed at its top and inserted into the positioning seat 21. The connector 516 has a hexagonal post 517 connected to the wrench clutch, allowing the wrench clutch to be oriented in the X and Z directions. The wrench clutch can rotate with the torque rotating shaft 514. A coupling 518 is located at the bottom of the torque rotating shaft 514, and it is connected to a dynamic torque sensor 515 via the coupling 518. The dynamic torque sensor 515 is connected to the lower rear support 512 via a floating pad. When the servo motor 32 is started, it drives the wrench clutch to rotate, thereby driving the connector 516 and the torque rotating shaft 514 to rotate. The dynamic torque sensor 515 monitors the torque value of the wrench clutch and captures torque data.

[0058] In addition, the torque testing mechanism 5 also includes a braking mechanism 52, which includes a lower connecting plate 521, a magnetic powder brake 522, a clamping cylinder 523, and a friction plate 524. The lower connecting plate 521 is connected between the lower front support 511 and the lower rear support 512. The magnetic powder brake 522 is fixed below the lower connecting plate 521 and is connected to the end of the dynamic torque sensor 515 away from the torque rotation shaft 514 through a second coupling 525. The magnetic powder brake 522 is coaxially arranged with the torque rotation shaft 514. Two symmetrically arranged clamping cylinders 523 are provided on the outside of the second coupling 524. The clamping cylinders 523 are fixed above the lower connecting plate 521, and their output ends are provided with clamping plates 526. The clamping plates 526 are provided with friction plates 524 that cooperate with the outside of the second coupling 525. The brake uses a magnetic powder brake 522, which has a small impact on the torque of product testing, high precision, and is stable, efficient, safe and reliable during operation.

[0059] In summary, the working method of an integrated automatic torque testing and calibration machine for wrenches and clutches includes the following steps:

[0060] S1. Place the wrench clutch into the positioning seat 21 and connect its lower end to the connector 516. The workbench 11 is equipped with a light to facilitate manual loading and unloading. Then start the clamping cylinder 22 to clamp the outside of the wrench clutch and position the wrench clutch.

[0061] S2. Manually move the torque adjustment mechanism 4 and insert the adjustment bit 424 into the spring compression adjustment position on the wrench clutch;

[0062] S3, the brake mechanism 52 is activated, the clamping cylinder 523 clamps the coupling 2 525, the lifting module 34 is activated, driving the centering clamping piece 33 to move down, the clamping fixture 331 is inserted into the upper end of the wrench clutch and connected to the wrench clutch, the clamping cylinder 22 is released, releasing the clamping of the wrench clutch.

[0063] S4. Set the torque value to 1, adjust the spring compression, start the adjustment mechanism 42, adjust the spring compression of the wrench clutch to the set maximum torque value, then the adjustment mechanism 42 returns to the safe position, the clamping component starts, the clamping cylinder 417 clamps the guide column 412, and the positioning suspension plate 411.

[0064] S5. Torque test of torque value one: Servo motor one 32 starts, centering clamp 33 drives the wrench clutch to rotate, torque testing mechanism 5 monitors the torque data of the wrench clutch at the set maximum value and uploads it to human machine 62, specifically the PC terminal of human machine 62.

[0065] S6. The HMI 62 processes the torque data, generates a torque data table and graph, and saves the data table for easy manual review or re-inspection. When processing the torque data, the HMI 62 will alarm and indicate that the product is unqualified if the torque value is not met, and the product will be manually unloaded. If the test is qualified, the next step will begin.

[0066] S7. Set the torque value to two, adjust the spring compression, start the lateral movement component, drive the adjusting bit 424 of the adjusting mechanism 42 to insert into the spring compression adjustment position on the wrench clutch, then the clamping component is released, and the suspension plate 411 is in a suspended state; start the adjusting mechanism 42, adjust the spring compression of the wrench clutch to the set minimum torque value, then the adjusting mechanism 42 returns to the safe position, the clamping component is started, the clamping cylinder 417 clamps the guide column 412, and positions the suspension plate 411;

[0067] S8. Torque test of torque value two: Servo motor one 32 starts, centering clamp 33 drives the wrench clutch to rotate, torque testing mechanism 5 monitors the torque data of the wrench clutch at the set minimum value and uploads it to human machine 62, specifically the PC terminal of human machine 62.

[0068] S9, HMI 62 processes torque data, generates torque data tables and graphs, and saves the data tables for easy manual review or re-inspection; when processing torque data, HMI 62 will alarm to indicate that products that do not reach the torque value are unqualified, and manual unloading will be required; if the test is qualified, the next step will begin.

[0069] S10. Follow steps S7-S9 to complete the torque test of the wrench clutch at the intermediate torque value (torque value three); it should be noted that torque tests at other set torque values ​​can also be performed as needed.

[0070] S11, calibrating position, the transverse component starts, driving the adjusting bit 424 to insert into the spring compression adjustment position on the wrench clutch, and then the clamping component is released; the adjusting mechanism 42 starts, adjusting the spring compression of the wrench clutch to the calibrated position, and then the adjusting mechanism 42 returns to the safe position, the clamping component starts, the clamping cylinder 417 clamps the guide column 412, and the positioning suspension plate 411;

[0071] S12, break-in: brake mechanism 52 is released, clamping cylinder 523 releases coupling 2 525, servo motor 1 32 restarts, centering clamping piece 33 drives wrench clutch to rotate, and break-in of wrench clutch is performed.

[0072] S13, Calibration torque test: When the speed of the wrench clutch reaches the set value, the brake mechanism 52 is restarted, the clamping cylinder 523 clamps the coupling 2 525, the torque test mechanism 5 monitors the torque data and uploads it to the PC, and the human machine 62 processes the torque data to generate a torque data table and curve.

[0073] S14. If the calibration torque test fails, the HMI 62 will alarm and indicate that the product is unqualified. The manual unloading is required. After the calibration torque test passes, the manual removal of the wrench clutch is placed into the finished product box.

[0074] The entire implementation process adopts intelligent and automated operation, integrating torque testing, torque position calibration, break-in, and screening. It has strong compatibility, can eliminate manual operations in many links, reduce production costs, improve production quality and efficiency, and adapt to the ever-increasing production capacity.

[0075] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0076] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An integrated automatic torque testing and calibration machine for wrenches and clutches, characterized in that: The system includes a body (1), a positioning mechanism (2), a centering mechanism (3), a torque adjustment mechanism (4), a torque testing mechanism (5), and a control mechanism. The body (1) has a worktable (11). The positioning mechanism (2), centering mechanism (3), torque adjustment mechanism (4), and torque testing mechanism (5) are all located on the worktable. The centering mechanism (3) is positioned directly above the torque testing mechanism (5), and their central axes coincide. The torque testing mechanism (5) has a positioning mechanism (2) on one side and a torque adjustment mechanism (4) on the opposite side. The centering mechanism (3) provides rotational driving force and interacts with the torque testing machine. The structure (5) is used to break in the wrench clutch; the torque adjustment mechanism (4) is used to adjust the torque of the wrench clutch and calibrate the torque position of the wrench clutch, including the suspension mechanism (41) and the adjustment mechanism (42). The adjustment mechanism (42) is located on the suspension mechanism (41) and is used to adjust the spring compression of the wrench clutch. The suspension mechanism (41) is movably connected to the worktable (11); the torque testing mechanism (5) is used to test the torque value of the wrench clutch under different torque conditions; the control mechanism includes the control panel (61) and the human-machine interface (62) located on the machine body (1).

2. The automatic torque testing and calibration machine for wrenches and clutches according to claim 1, characterized in that: The positioning mechanism (2) includes a positioning seat (21) and a clamping cylinder (22). The positioning seat (21) is located above the workbench (11). The positioning seat (21) has a chamber for a positioning wrench clutch inside. The clamping cylinder (22) is located on one side of the positioning seat (21) and is fixedly connected to the workbench (11) through a cylinder seat (23). The output end of the clamping cylinder (22) is provided with a clamping plate (24) that cooperates with the wrench clutch.

3. The automatic torque testing and calibration machine for wrenches and clutches according to claim 1, characterized in that: The centering mechanism (3) includes a support (31), a servo motor (32), a centering clamp (33), and a lifting module (34). The support (31) is fixed above the workbench (11), and the lifting module (34) is fixed on the support (31). The output end of the lifting module (34) is connected to the servo motor (32), and the output end of the servo motor (32) is connected to the centering clamp (33). The bottom of the centering clamp (33) is provided with a clamping fixture (331) connected to the wrench clutch.

4. The automatic torque testing and calibration machine for wrenches and clutches according to claim 1, characterized in that: The suspension mechanism (41) includes a suspension plate (411), a guide column (412), a spring seat (413), and a constant force spring (414). The suspension plate (411) is movably connected to the worktable (11), and the four corners of its bottom are connected to the guide column (412). The lower end of the guide column (412) passes through the worktable (11) and is slidably connected to the worktable (11). The bottom of the guide column (412) is provided with a limiting plate (415). The side of the suspension plate (411) is provided with a spring seat (413) fixed on the worktable (11). The spring seat (413) is provided with a plurality of constant force springs (414) arranged in parallel. The constant force springs (414) are connected to the suspension plate (411).

5. The automatic torque testing and calibration machine for wrenches and clutches according to claim 4, characterized in that: The suspension mechanism (41) also includes a lower support plate (416) and a clamping assembly. The lower support plate (416) is located below the workbench (11) and is fixedly connected to the workbench (11) through a support sleeve (419). The clamping assembly is located on the lower support plate (416) and includes a clamping unit with two clamping guide columns (412) arranged diagonally. The clamping unit includes a clamping cylinder (417) and a clamping block (418). The clamping cylinder (417) is fixed on the lower support plate (416), and the output end of the clamping cylinder (417) is provided with a clamping block (418) that cooperates with the guide column (412).

6. The automatic torque testing and calibration machine for wrenches and clutches according to claim 5, characterized in that: The adjustment mechanism (42) is mounted on the suspension plate (411) and includes a fixed base (421), a second servo motor (422), a reducer (423), an adjustment bit (424), and a transverse movement assembly. The fixed base (421) is fixed on the transverse movement assembly. The reducer (423) is connected to the second servo motor (422) and is mounted on the fixed base (421). The output end of the reducer (423) is connected to a fixing fixture (425), and an adjustment bit is fixed on the fixing fixture (425). Head (424); The transverse component includes a slide rail (426) and two oppositely arranged transverse units. The slide rail (426) is fixed on the suspension plate (411). The fixed seat (421) is fixed on the slider of the slide rail (426) and slidably connected to the slide rail (426). The transverse unit includes a transverse cylinder (427) and a push plate (428). The push plate (428) is fixed on the fixed seat (421). The output end of the transverse cylinder (427) is movably connected to the push plate (428).

7. The automatic torque testing and calibration machine for wrenches and clutches according to claim 1, characterized in that: The torque testing mechanism (5) includes a testing mechanism (51), which includes a lower front support (511), a lower rear support (512), a flange bearing seat (513), a torque rotating shaft (514), and a dynamic torque sensor (515). The lower front support (511) is fixed to the front side below the worktable (11), the lower rear support (512) is fixed to the rear side below the worktable (11), the flange bearing seat (513) is fixed on the worktable (11), and the torque rotating shaft (514) is... The torque rotating shaft (514) is fitted into the flange bearing seat (513) and rotated thereto. The top of the torque rotating shaft (514) is fixed with a connector (516) inserted into the positioning seat (21). The connector (516) is provided with a hexagonal column (517) connected to the wrench clutch. The bottom of the torque rotating shaft (514) is provided with a coupling (518) and is connected to the dynamic torque sensor (515) through the coupling (518). The dynamic torque sensor (515) is connected to the lower rear support (512) through a floating pad.

8. The automatic torque testing and calibration machine for wrenches and clutches according to claim 7, characterized in that: The torque testing mechanism (5) also includes a braking mechanism (52), which includes a lower connecting plate (521), a magnetic powder brake (522), a clamping cylinder (523), and a friction plate (524). The lower connecting plate (521) connects the lower front support (511) and the lower rear support (512). The magnetic powder brake (522) is fixed below the lower connecting plate (521) and is connected to the dynamic torque sensor (524) via a coupling (525). 15) The end away from the torque rotating shaft (514) is connected. The magnetic powder brake (522) is coaxially arranged with the torque rotating shaft (514). Two symmetrically arranged clamping cylinders (523) are provided on the outside of the coupling two (525). The clamping cylinder (523) is fixed above the lower connecting plate (521). Its output end is provided with a clamping plate (526). The clamping plate (526) is provided with a friction plate (524) that cooperates with the outside of the coupling two (525).

9. The automatic torque testing and calibration machine for wrenches and clutches according to claim 1, characterized in that: The machine body (1) includes a lower frame (12) and a soundproof cover (13) located above the lower frame (12). The lower frame (12) has protective plates (121) on its four sides. The lower frame (12) also has casters (122) and adjustable feet (123) at the four corners of its bottom. The soundproof cover (13) covers the workbench (11) and has a protective door (131) installed on it. The control panel (61) is located on the protective plate (121) on the front side of the lower frame (12), and the human-machine interface (62) is located on one side of the soundproof cover (13).

10. The working method of the automatic torque testing and calibration integrated machine for wrenches and clutches according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1. Place the wrench clutch into the positioning seat (21) of the positioning mechanism (2), connect its lower end to the connector (516) of the torque testing mechanism (5), and then start the clamping cylinder (22) of the positioning mechanism (2). The clamping cylinder (22) clamps the outside of the wrench clutch and positions the wrench clutch. S2. Manually move the torque adjustment mechanism (4) and insert the adjustment bit (424) of the torque adjustment mechanism (4) into the spring compression adjustment position on the wrench clutch; S3, the brake mechanism (52) of the torque testing mechanism (5) is activated, the clamping cylinder (523) of the brake mechanism (52) clamps the coupling two (525) connected to the lower end of the wrench clutch, the lifting module (34) of the centering mechanism (3) is activated, driving the centering clamping part (33) to move down, the clamping fixture (331) at the lower end of the centering clamping part (33) is inserted into the upper end of the wrench clutch and connected to the wrench clutch, the clamping cylinder (22) is released, and the clamping of the wrench clutch is released; S4. Set the torque value to 1, adjust the spring compression, start the adjustment mechanism (42) of the torque adjustment mechanism (4), adjust the spring compression of the wrench clutch to the set maximum torque value, then the adjustment mechanism (42) returns to the safe position, start the clamping component of the torque adjustment mechanism (4), the clamping cylinder (417) of the clamping component clamps the guide column (412) of the suspension mechanism (41), and positions the suspension plate (411) of the suspension mechanism (41). S5. Torque test of torque value one: the drive servo motor one (32) of the centering mechanism (3) is started, the centering clamp (33) drives the wrench clutch to rotate, the torque test mechanism (5) monitors the torque data of the wrench clutch at the set maximum value and uploads it to the human machine (62). S6. The human-machine interface (62) processes the torque data and generates a torque data table and curve. When the human-machine interface processes the torque data, if the product does not reach the torque value, the human-machine interface (62) will alarm and prompt that the product is unqualified and manually unload it. If the test is qualified, the next step will begin. S7. Set the torque value to two, adjust the spring compression, start the transverse component of the adjustment mechanism (42), drive the adjustment bit (424) of the adjustment mechanism (42) to insert into the spring compression adjustment position on the wrench clutch, then the clamping component is released, and the suspension plate (411) is in a suspended state; start the adjustment mechanism (42), adjust the spring compression of the wrench clutch to the set minimum torque value, then the adjustment mechanism (42) returns to the safe position, the clamping component is started, the clamping cylinder (417) clamps the guide column (412), and positions the suspension plate (411). S8. Torque test of torque value two: the drive servo motor one (32) of the centering mechanism (3) is started, the centering clamp (33) drives the wrench clutch to rotate, the torque test mechanism (5) monitors the torque data of the wrench clutch at the set minimum value and uploads it to the human machine (62). S9. The human-machine interface (HMI) (62) processes the torque data and generates a torque data table and curve. When processing the torque data, if the product does not reach the torque value, the HMI (62) will alarm and prompt that the product is unqualified, and the manual unloading will be performed. If the product passes the test, the next step will begin. S10. Follow steps S7-S9 to complete the torque test of the wrench clutch at the intermediate torque value. S11, Calibration position, the transverse component of the adjustment mechanism (42) is activated, driving the adjustment bit (424) to insert into the spring compression adjustment position on the wrench clutch, and then the clamping component is released; the adjustment mechanism (42) is activated, adjusting the spring compression of the wrench clutch to the calibration position, and then the adjustment mechanism (42) returns to the safe position, the clamping component is activated, the clamping cylinder (417) clamps the guide column (412), and the positioning suspension plate (411) is positioned. S12, break-in, the brake mechanism (52) is released, the clamping cylinder (523) of the brake mechanism (52) releases the coupling two (525), the drive servo motor one (32) of the centering mechanism (3) is restarted, the centering clamping part (33) drives the wrench clutch to rotate, and the wrench clutch is broken in. S13, Calibration torque test: When the speed of the wrench clutch reaches the set value, the brake mechanism (52) is restarted, the clamping cylinder (523) clamps the coupling two (525), the torque test mechanism (5) monitors the torque data and uploads it to the human machine (62), the human machine (62) processes the torque data and generates a torque data table and curve; S14. If the calibration torque test fails, the machine (62) will alarm and indicate that the product is unqualified. Manual unloading is required. After the calibration torque test passes, the manual wrench clutch is removed and placed into the finished product box.

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