Torque wrench testing machine
By designing a torque wrench testing machine that includes temperature and humidity control and torque testing mechanisms, the problem that existing equipment cannot comprehensively test the performance of torque wrenches has been solved. This enables comprehensive evaluation of multiple indicators and temperature adaptability testing, thereby improving testing efficiency and accuracy.
Patent Information
- Application Number
- CN202520046602.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-09
AI Technical Summary
Existing torque wrench testing equipment cannot simultaneously and effectively monitor torque accuracy, repeatability, linearity, minimum and maximum torque, display accuracy, and durability, and cannot perform tests under different temperature conditions.
A torque wrench testing machine was designed, comprising a frame, operating table, temperature and humidity control mechanism, torque testing mechanism, and temperature and humidity sensor. Through drive components, clamps, and temperature and humidity control components, multiple performance indicators of torque wrenches can be tested, including performance evaluation under different temperature environments.
It enables comprehensive testing of torque accuracy, linearity, temperature and humidity changes, and durability, improving testing efficiency and accuracy, and ensuring the reliability and stability of the torque wrench.
Smart Images
Figure CN223841363U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of torque wrench testing machines, and in particular to a torque wrench testing machine. Background Technology
[0002] A torque wrench is a tool used to apply precise torque. To ensure its accuracy and reliability, a series of mechanical tests are required. These include: 1. Torque accuracy testing: verifying whether the output torque of the torque wrench at different settings matches the calibrated value; 2. Repeatability testing: evaluating the repeatability of the torque wrench, i.e., the consistency of measurement results when applying the same set torque multiple times; 3. Linearity testing: testing the linearity of the torque wrench throughout its range, ensuring accuracy and consistency across different torque ranges; 4. Minimum and maximum torque testing: ensuring the accuracy of the torque wrench at its lowest and highest torque settings; 5. Display accuracy testing (for digital torque wrenches): verifying the consistency between the displayed value and the actual applied torque value; 6. Durability testing: evaluating the stability and durability of the torque wrench during long-term use; and 7. Temperature effect testing: evaluating the changes in the accuracy of the torque wrench under different temperature environments.
[0003] There is a need for an integrated testing machine that can ensure the accuracy and reliability of torque wrenches by detecting torque accuracy, minimum and maximum torque, linearity, accuracy variation, stability and durability. Utility Model Content
[0004] To overcome the shortcomings of existing methods, this utility model provides a torque wrench testing machine.
[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a torque wrench testing machine, including a frame and an operating table in the middle of the frame. The front side of the frame is provided with a sealed glass door, and the remaining sides are sealed by steel plates. A controller is provided on the left side. A temperature and humidity adjustment mechanism and a temperature and humidity sensor are provided on the steel plate. Two sets of torque testing mechanisms are installed on the operating table via a base. The temperature and humidity sensor, the temperature and humidity adjustment mechanism, and the torque testing mechanism are electrically connected to the controller. The torque testing mechanism includes a drive component one, a clamp, and a drive component two. The drive component one and the drive component two are arranged opposite to each other. The drive component one is installed on the base, and the drive component two is installed at the bottom of the frame. A torque wrench is fixed in the middle by a clamp. The temperature and humidity adjustment mechanism includes a dehumidification component, a humidification component, a temperature adjustment component, and an internal circulation component. The internal circulation component is fixed on the steel plate inside the rear side of the frame and has a temperature adjustment component inside. The temperature and humidity sensor, the dehumidification component, and the humidification component are set on the steel plate at the top of the frame.
[0006] According to another embodiment of the present invention, the drive assembly includes a vertical telescopic cylinder, a rotary motor, a reducer, and a transmission shaft; the vertical telescopic cylinder is fixed on a base, the output rod is connected to a motor base, and a rotary motor is mounted on the motor base; the rotary motor is connected to a rotating shaft through a reducer; a torque wrench is fixed to the bottom of the rotating shaft by a clamp; the vertical telescopic cylinder, the rotary motor, the reducer, and the controller are electrically connected.
[0007] According to another embodiment of the present invention, the drive component two is a three-axis cylinder; the three-axis cylinder is electrically connected to the controller, fixed to the bottom of the operating table by a bracket, and the top output shaft is connected to a push plate; the push plate is provided with a torque wrench mounting seat; the mounting seat is provided with a clamp.
[0008] According to another embodiment of the present invention, the fixture further includes a first fixture and a second fixture symmetrically arranged. The first fixture includes a swing arm cylinder, a positioning claw, and a locking claw. The swing arm cylinder is connected to a drive shaft, and a positioning claw is provided on its side. The output shaft is connected to the locking claw. The second fixture includes claw blocks and a gripper pneumatic cylinder. The gripper pneumatic cylinder has a cylindrical structure with three sets of claw blocks distributed around its top circumference and its bottom is fixed to a mounting base. The claw blocks clamp the bottom of a torque wrench. The swing arm cylinder and the gripper pneumatic cylinder are electrically connected to a controller.
[0009] According to another embodiment of the present invention, the dehumidification component further includes an exhaust pipe and a centrifugal fan; the exhaust pipe is disposed on the top steel plate, one end of which is connected to the inner side of the top steel plate, and a centrifugal fan is disposed inside; filters are disposed at both ends of the exhaust pipe; the humidification component includes a water tank, a heater, and an atomizer; the water tank is fixed to the outer side of the top steel plate, and a heater is disposed inside, one end of which is connected to the inside of the top steel plate through the humidification pipe; a solenoid valve and an atomizer are disposed at the port of the humidification pipe; the centrifugal fan, heater, solenoid valve, and atomizer are electrically connected to the controller.
[0010] According to another embodiment of the present invention, the internal circulation component is further included, which is fixed to the outside of the rear steel plate and includes a circulation fan and a circulation duct; the circulation duct includes an exhaust duct and an inlet duct; a circulation fan is provided between the exhaust duct and the inlet duct, and a temperature regulating component is provided inside the exhaust duct; the temperature regulating component includes a cooling element and a heating element, and a heat insulation sheet is provided between the cooling element and the heating element, and is fixed inside the exhaust duct; both the exhaust duct and the inlet duct are connected to the interior of the rear steel plate; the circulation fan, the cooling element, and the heating element are electrically connected to the controller.
[0011] The beneficial effects of this utility model are that it can simultaneously test indicators such as torque accuracy, linearity, temperature and humidity changes, and durability. It also facilitates the placement and replacement of torque wrenches. The overall sealing of the testing machine allows for convenient performance of multiple tests, making the device more convenient and improving testing efficiency. Attached Figure Description
[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 This is a side view of the present invention;
[0015] Figure 3 This is a rear view of the present invention;
[0016] Figure 4 This is a schematic diagram of the fixture's structure;
[0017] Figure 5 This is a schematic diagram of the temperature structure component.
[0018] In the diagram: 1. Frame; 2. Control panel; 3. Controller; 4. Temperature and humidity control mechanism; 5. Temperature and humidity sensor; 6. Torque testing mechanism; 7. Drive component one; 8. Fixture; 9. Drive component two; 10. Dehumidification component; 11. Humidification component; 12. Temperature control component; 13. Internal circulation component; 14. Vertical telescopic cylinder; 15. Rotary motor; 16. Reducer; 17. Drive shaft; 18. Three-axis cylinder; 19. Fixture one; 20. Fixture two; 21. Swing arm cylinder; 22. Positioning claw; 23. Locking claw; 24. Claw block; 25. Grip pneumatic cylinder; 26. Centrifugal fan; 27. Heater; 28. Solenoid valve; 29. Atomizer; 30. Circulating fan; 31. Cooling element; 32. Heating block. Detailed Implementation
[0019] like Figure 1This is a schematic diagram of the structure of this utility model, a torque wrench testing machine, including a frame 1 and an operating platform 2 in the middle of the frame 1. The front of the frame 1 is provided with a sealed glass door, and the other sides are sealed by steel plates. A controller 3 is provided on the left side. A temperature and humidity adjustment mechanism 4 and a temperature and humidity sensor 5 are provided on the steel plate. Two sets of torque testing mechanisms 6 are mounted on the operating platform 2 via a base. The temperature and humidity sensor 5, the temperature and humidity adjustment mechanism 4, and the torque testing mechanism 6 are electrically connected to the controller 3. The torque testing mechanism 6 includes a drive assembly 7, a clamp 8, and a drive group. Part 2 9; The drive assembly 1 7 and drive assembly 2 9 are arranged opposite to each other. The drive assembly 1 7 is mounted on the base, and the drive assembly 2 9 is mounted on the bottom of the frame 1. A torque wrench is fixed in the middle by a clamp 8; The temperature and humidity regulating mechanism 4 includes a dehumidifying assembly 10, a humidifying assembly 11, a temperature regulating assembly 12, and an internal circulation assembly 13. The internal circulation assembly 13 is fixed on the steel plate on the rear side inside the frame 1 and has the temperature regulating assembly 12 inside. The temperature and humidity sensor 5, the dehumidifying assembly 10, and the humidifying assembly 11 are set on the steel plate on the top of the frame 1.
[0020] According to another embodiment of the present invention, the drive assembly 7 further includes a vertical telescopic cylinder 14, a rotary motor 15, a reducer 16, and a transmission shaft 17; the vertical telescopic cylinder 14 is fixed on a base, the output rod is connected to a motor base, and the rotary motor 15 is mounted on the motor base; the rotary motor 15 is connected to a rotating shaft through the reducer 16; a torque wrench is fixed to the bottom of the rotating shaft through a clamp 8; the vertical telescopic cylinder 14, the rotary motor 15, the reducer 16 are electrically connected to the controller 3.
[0021] According to another embodiment of the present invention, the drive assembly 2 9 is a three-axis cylinder 18; the three-axis cylinder 18 is electrically connected to the controller 3, and is fixed to the bottom of the operating table 2 by a bracket, with the top output shaft connected to a push plate; the push plate is provided with a torque wrench mounting seat; the mounting seat is provided with a clamp 8.
[0022] Specifically, the vertical telescopic cylinder 14 and the three-axis cylinder 18 work together to perform tensile and compression tests, and then the rotary motor 15 works with the reducer 16 and the drive shaft 17 to perform torsion tests. For example, the torque wrench is set to different torque values, and the actual output torque is measured using the drive assembly 7. The data is transmitted to the controller 3. The accuracy of the test is within the allowable error range of 4%. The displayed value of the digital torque wrench is compared with the measured value of the torque tester to evaluate its display accuracy. Under the same conditions, the same set torque is applied multiple times using the torque wrench, and the results of each measurement are recorded. These results are compared to evaluate its consistency. Within the entire range of the torque wrench, multiple torque values are selected for setting and measurement. The deviations of these measurement results from the set values are compared to evaluate its linearity. Then, through repeated use tests, the performance changes of the torque wrench during use are recorded, including the stability and accuracy of the torque output.
[0023] According to another embodiment of the present invention, the clamp 8 further includes a clamp 19 and a clamp 20 symmetrically arranged. The clamp 19 includes a swing arm cylinder 21, a positioning claw 22, and a locking claw 23. The swing arm cylinder 21 is connected to the transmission shaft 17, and the positioning claw 22 is provided on the side. The output shaft is connected to the locking claw 23. The clamp 20 includes claw blocks 24 and a gripper pneumatic cylinder 25. The gripper pneumatic cylinder 25 has a cylindrical structure with three sets of claw blocks 24 distributed around the top circumference and the bottom is fixed on the mounting base. The claw blocks 24 clamp the bottom of the torque wrench. The swing arm cylinder 21 and the gripper pneumatic cylinder 25 are electrically connected to the controller 3.
[0024] According to another embodiment of the present invention, the dehumidification component 10 further includes an exhaust pipe and a centrifugal fan 26; the exhaust pipe is disposed on the top steel plate, one end of which is connected to the inner side of the top steel plate, and the centrifugal fan 26 is disposed inside; the front and rear ends of the exhaust pipe are provided with filter screens; the humidification component 11 includes a water tank, a heater 27 and an atomizer 29; the water tank is fixed to the outer side of the top steel plate, and the heater 27 is disposed inside, one end of which is connected to the inside of the top steel plate through the humidification pipe; the port of the humidification pipe is provided with a solenoid valve 28 and an atomizer 29; the centrifugal fan 26, the heater 27, the solenoid valve 28 and the atomizer 29 are electrically connected to the controller 3.
[0025] According to another embodiment of the present invention, the internal circulation component 13 is fixed to the outside of the rear steel plate and includes a circulation fan 30 and a circulation duct; the circulation duct includes an exhaust duct and an inlet duct; the circulation fan 30 is provided between the exhaust duct and the inlet duct, and a temperature regulating component 12 is provided inside the exhaust duct; the temperature regulating component 12 includes a cooling element 31 and a heating element 32, and a heat insulation sheet is provided between the cooling element 31 and the heating element 32, and is fixed inside the exhaust duct; both the exhaust duct and the inlet duct are connected to the inside of the rear steel plate; the circulation fan 30, the cooling element 31 and the heating element 32 are electrically connected to the controller 3.
[0026] Specifically, the dehumidification component 10 circulates internal air through the centrifugal fan 26 and the internal circulation component 13 while simultaneously expelling high-humidity air. The humidification component 11 generates water vapor from the heated water tank, which is then atomized into water mist by the atomizer 29. Due to gravity, the water falls freely, increasing the humidity. The cooling chip 31 and the heating block 32 regulate air circulation, and the circulating fan 30 regulates the overall internal air to meet the temperature and humidity standards. During the test, the temperature and humidity regulation structure 4 places the torque wrench in different temperature environments and measures its torque output under these environments. The measurement results at different temperatures are compared to evaluate its temperature stability.
[0027] In the specific operation process, the wrench to be tested is fixed by the clamp 8, the internal temperature and humidity data are collected by the temperature and humidity sensor 5, and then the controller 3 drives the torque testing mechanism 6 and the temperature and humidity adjustment mechanism 4 to perform multi-faceted tests on the torque wrench according to the set temperature and humidity conditions.
[0028] The above description is illustrative only and not restrictive of this utility model. Those skilled in the art will understand that many modifications, variations or equivalents can be made without departing from the spirit and scope defined by the appended claims, and all such modifications, variations or equivalents will fall within the protection scope of this utility model.
Claims
1. A torque wrench testing machine, characterized in that, Includes a frame (1) and an operating platform (2) between the frame (1). The frame (1) has a sealed glass door on the front and is sealed with steel plates on the other side. A controller (3) is located on the left side. A temperature and humidity control mechanism (4) and a temperature and humidity sensor (5) are provided on the steel plate. Two sets of torque testing mechanisms (6) are installed on the operating platform (2) via a base. The temperature and humidity sensor (5), the temperature and humidity control mechanism (4), and the torque testing mechanism (6) are electrically connected to the controller (3). The torque testing mechanism (6) includes a drive assembly one (7), a clamp (8), and a drive assembly two (9). The drive assembly one (7) 7) and drive component 2 (9) are arranged opposite to each other. Drive component 1 (7) is installed on the base, drive component 2 (9) is installed at the bottom of the frame (1), and a torque wrench is fixed in the middle by a clamp (8); the temperature and humidity adjustment mechanism (4) includes a dehumidification component (10), a humidification component (11), a temperature adjustment component (12) and an internal circulation component (13). The internal circulation component (13) is fixed on the steel plate on the rear side inside the frame (1) and has a temperature adjustment component (12) inside. The temperature and humidity sensor (5), the dehumidification component (10) and the humidification component (11) are arranged on the steel plate on the top of the frame (1).
2. The torque wrench testing machine according to claim 1, characterized in that, The drive assembly (7) includes a vertical telescopic cylinder (14), a rotary motor (15), a reducer (16), and a drive shaft (17); the vertical telescopic cylinder (14) is fixed on the base, the output rod is connected to the motor base, and the rotary motor (15) is installed on the motor base; the rotary motor (15) is connected to the rotating shaft through the reducer (16); a torque wrench is fixed to the bottom of the rotating shaft through a clamp (8); the vertical telescopic cylinder (14), the rotary motor (15), the reducer (16) are electrically connected to the controller (3).
3. The torque wrench testing machine according to claim 1, characterized in that, The second drive component (9) is a three-axis cylinder (18); the three-axis cylinder (18) is electrically connected to the controller (3), and is fixed to the bottom of the operating table (2) by a bracket, with the top output shaft connected to the push plate; the push plate is provided with a torque wrench mounting seat; the mounting seat is provided with a clamp (8).
4. The torque wrench testing machine according to claim 1, characterized in that, The clamp (8) includes a symmetrically arranged clamp one (19) and clamp two (20). The clamp one (19) includes a swing arm cylinder (21), a positioning claw (22), and a locking claw (23). The swing arm cylinder (21) is connected to the transmission shaft (17), and the positioning claw (22) is provided on the side. The output shaft is connected to the locking claw (23). The clamp two (20) includes a claw block (24) and a gripper pneumatic cylinder (25). The gripper pneumatic cylinder (25) is a cylindrical structure with three sets of claw blocks (24) distributed on the top circumference and the bottom fixed on the mounting base. The claw block (24) clamps the bottom of the torque wrench. The swing arm cylinder (21) and the gripper pneumatic cylinder (25) are electrically connected to the controller (3).
5. The torque wrench testing machine according to claim 1, characterized in that, The dehumidification component (10) includes a dehumidification pipe and a centrifugal fan (26); the dehumidification pipe is set on the top steel plate, one end of which is connected to the inside of the top steel plate, and the centrifugal fan (26) is installed inside; the front and rear ends of the dehumidification pipe are equipped with filter screens; the humidification component (11) includes a water tank, a heater (27) and an atomizer (29); the water tank is fixed on the outside of the top steel plate, and the heater (27) is installed inside, one end of which is connected to the inside of the top steel plate through the humidification pipe; the port of the humidification pipe is equipped with a solenoid valve (28) and an atomizer (29); the centrifugal fan (26), heater (27), solenoid valve (28) and atomizer (29) are electrically connected to the controller (3).
6. The torque wrench testing machine according to claim 1, characterized in that, The internal circulation component (13) is fixed to the outside of the rear steel plate and includes a circulation fan (30) and a circulation duct; the circulation duct includes an exhaust duct and an inlet duct; the circulation fan (30) is provided between the exhaust duct and the inlet duct, and a temperature regulating component (12) is provided inside the exhaust duct; the temperature regulating component (12) includes a cooling element (31) and a heating element (32), and a heat insulation sheet is provided between the cooling element (31) and the heating element (32), and is fixed inside the exhaust duct; the exhaust duct and the inlet duct are both connected to the inside of the rear steel plate; the circulation fan (30), the cooling element (31) and the heating element (32) are electrically connected to the controller (3).