Multifunctional torque test bench

Abstract

The utility model discloses a multifunctional torque test platform, including work table, aluminium profile base, electrical assembly, torsion sensor, overload protection device, torsion assembly, servo drive assembly, spacing sliding table and conversion subassembly, the aluminium profile base is fixedly connected in the middle part of work table top end surface, one side of aluminium profile base is equipped with movable spacing sliding table, two torsion sensors are arranged to the other side of aluminium profile base, the input shaft of overload protection device and torsion sensor bottom is connected, and the torsion output shaft of torsion sensor top is equipped with detachable conversion subassembly, adopt servo motor as torque loading drive source, and the accurate rotation of encoder control servo motor in torque loading process, thereby realizes the accurate control of torque loading, through setting detachable conversion subassembly on the torsion output shaft of torsion sensor top, make the test platform can test electric torque tool and manual torque tool, thereby can be applicable to different torque tool calibration.

Description

Technical Field

[0001] This utility model relates to the field of torque calibration and testing technology, and in particular to a multifunctional torque testing bench. Background Technology

[0002] After torque tools are manufactured, they undergo torque calibration. During the torque calibration process, the torque wrench remains in a state of near-static deformation from the start to the end of loading, resulting in a very short torque loading displacement. However, the manual adjustment method of existing test benches has very low precision and cannot accurately and linearly load torque. Furthermore, existing test benches can only be used to calibrate manual torque tools, while electric torque tools require other types of test benches. This results in a narrow calibration test range for the test bench, making it unsuitable for calibrating different torque tools. Therefore, a multi-functional torque test bench was designed to solve the above problems. Utility Model Content

[0003] To address the shortcomings of existing torque testing technologies, the purpose of this invention is to provide a multifunctional torque testing bench with advantages such as high adjustment accuracy and wide applicability.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a multi-functional torque testing bench, comprising a worktable, an aluminum profile base, electrical components, a torque sensor, an overload protection device, a torque component, a servo drive component, a limit slide, and a conversion component; An aluminum profile base is fixedly connected to the center of the top surface of the workbench. Electrical components for data acquisition and power supply are installed inside the workbench. A movable limiting slide is provided on one side of the aluminum profile base, and two torque sensors are arranged on the other side of the aluminum profile base. The torque sensors are fixedly connected to the aluminum profile base and extend through the workbench. The torque sensor has a torque output shaft at its top and a torque input shaft at its bottom. The overload protection device is connected to the input shaft at the bottom of the torque sensor. The torque output shaft at the top of the torque sensor has a detachable conversion component. Both the servo drive component and the torque component are located inside the workbench. The torque component converts the power from the servo drive component into torque to drive the overload protection device. Preferably, the torque assembly includes a lead screw, a guide rod, a drive block, a U-shaped bracket, a swing arm, and a sliding shaft. The U-shaped bracket has a horizontal leg and vertical legs arranged on both sides. The horizontal leg of the U-shaped bracket is fixedly connected to the bottom surface of the workbench. The two ends of the lead screw pass through the two vertical legs of the U-shaped bracket and are rotatably connected to them. The two sides of the lead screw are provided with guide rods fixedly connected to the vertical legs of the U-shaped bracket. The drive block is located in the middle of the two vertical legs of the U-shaped bracket. The lead screw passes through the drive block and engages with it. The guide rod passes through the drive block and is slidably connected to it. A sliding shaft is fixedly connected to the center of the bottom surface of the drive block. One end of the swing arm is fixedly connected to an overload protection device. The other end of the swing arm has an oblong groove, and the sliding shaft slides inside the oblong groove. Preferably, the servo drive assembly includes a servo motor, a driving synchronous pulley, a driven synchronous pulley, and a synchronous belt. The servo motor is fixedly connected to the worktable via a bracket. The output shaft of the servo motor is parallel to the axis of the lead screw. The output shaft of the servo motor is fixedly connected to the driving synchronous pulley. The driven synchronous pulley is sleeved and fixed to one end of the lead screw. The synchronous belt is sleeved on the outer edges of the driving synchronous pulley and the driven synchronous pulley. Preferably, the limiting slide has abutment posts, U-shaped auxiliary rods, horizontal locking nuts, and lifting clamps. The two abutment posts are vertically arranged on the top surface of the limiting slide. The lifting clamps are detachably clamped and fixed on any abutment post. The U-shaped auxiliary rods are fixedly connected to the side of the limiting slide. The horizontal locking nuts are screwed onto the top surface of the limiting slide. The horizontal locking nuts are used to press the aluminum profile base to lock the limiting slide. Preferably, the overload protection device includes a locking nut, pressure pads, annular elastic plates, friction plates, a rotating column, and a pressure ring sleeved on the torque input shaft. The rotating column has pressure rings at both the top and bottom. The rotating column is radially and fixedly connected to one end of the rocker arm. The bottom end of the pressure ring at the bottom of the rotating column is provided with a locking nut that is screwed and fixed to the torque input shaft. The pressure ring and the torque input shaft are axially slidably connected through a keyway. Friction plates are provided on the contact end faces of the pressure ring and the rotating column. Multiple annular elastic plates are stacked on the top surface of the pressure ring at the top of the rotating column. A pressure pad is provided at the top of the annular elastic plate. A locking nut that is screwed and fixed to the torque input shaft is provided at the top of the pressure pad. The annular elastic plate forces the pressure ring to press the friction plate against the end face of the rotating column. Preferably, the conversion assembly includes a conversion column and a buffer column. The top of the conversion column has a hexagonal groove for inserting and fixing the buffer column, and the bottom of the conversion column has a square shaft for inserting the output shaft of the torque sensor. The buffer column has a housing, a telescopic rod, a sleeve rod, a compression ring, a return spring, and an annular spring. The bottom of the telescopic rod is screwed into the bottom opening of the housing through a thread. The sleeve rod is rotatably connected to the top opening of the housing. The top of the sleeve rod has a quadrilateral slot for inserting the output shaft of the torque tool. The top of the telescopic rod is axially slidably connected to the bottom of the sleeve rod through a spline. The telescopic rod has an abutment flange in the middle. The return spring is sleeved on the outer edge of the telescopic rod located between the sleeve rod and the abutment flange. The bottom of the abutment flange is sequentially sleeved with a compression ring and an annular spring. The compression ring is rotatably connected to the abutment flange. Preferably, the workbench end face is also provided with an emergency stop button and multiple control buttons; Preferably, a display screen for displaying data is fixedly connected to the side of the workbench via a bracket; The beneficial effects of this utility model are: 1. By using a servo motor as the torque loading drive source, the encoder controls the servo motor to rotate precisely during the torque loading process, thereby achieving precise control of torque loading; 2. By setting a detachable conversion component on the torque output shaft at the top of the torque sensor, the test bench can test electric torque tools and manual torque tools, thus making it suitable for tool calibration with different torques. Attached Figure Description

[0005] Figure 1 This is a three-dimensional structural view of the present invention; Figure 2 This is a cross-sectional structural view of the conversion component of this utility model; Figure 3 This is a view of the internal assembly structure of the workbench of this utility model; Figure 4 This is a three-dimensional structural view of the limiting slide of this utility model; Figure 5 This is a three-dimensional structural view of the overload protection device of this utility model. Detailed Implementation

[0006] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0007] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0008] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "equipped with," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0009] Please see Figures 1 to 5 The embodiments of this utility model include: A multifunctional torque testing bench includes a worktable 1, an aluminum profile base 2, electrical components 3, a torque sensor 4, an overload protection device 5, a torque component 6, a servo drive component 7, a limit slide 8, and a conversion component 9. An aluminum profile base 2 is fixedly connected to the center of the top surface of the workbench 1. An electrical component 3 for data acquisition and power supply is provided inside the workbench 1. A movable limiting slide 8 is provided on one side of the aluminum profile base 2. Two torque sensors 4 are arranged on the other side of the aluminum profile base 2. The torque sensors 4 are fixedly connected to the aluminum profile base 2 and extend into the workbench 1. The top of the torque sensor 4 has a torque output shaft, and the bottom of the torque sensor 4 has a torque input shaft. The overload protection device 5 is connected to the input shaft at the bottom of the torque sensor 4. The torque output shaft at the top of the torque sensor 4 is provided with a detachable conversion component 9. The servo drive component 7 and the torque component 6 are both located inside the workbench 1. The torque component 6 converts the power of the servo drive component 7 into torque to drive the overload protection device 5. The torque assembly 6 includes a lead screw 61, a guide rod 62, a drive block 63, a U-shaped bracket 64, a swing rod 65, and a sliding shaft 66. The U-shaped bracket 64 has a horizontal leg and vertical legs arranged on both sides. The horizontal leg of the U-shaped bracket 64 is fixedly connected to the bottom surface of the workbench 1. The two ends of the lead screw 61 pass through the vertical legs on both sides of the U-shaped bracket 64 and are rotatably connected to them. The two sides of the lead screw 61 are provided with guide rods 62 that are fixedly connected to the vertical legs of the U-shaped bracket 64. The drive block 63 is located in the middle of the two vertical legs on both sides of the U-shaped bracket 64. The lead screw 61 passes through the drive block 63 and engages with it. The guide rod 62 passes through the drive block 63 and is slidably connected to it. The center of the bottom surface of the drive block 63 is fixedly connected to the sliding shaft 66. One end of the swing rod 65 is fixedly connected to the overload protection device 5. The other end of the swing rod 65 is provided with a waist-shaped groove 651. The sliding shaft 66 slides in the waist-shaped groove 651. The servo drive assembly 7 includes a servo motor 71, a driving synchronous pulley 72, a driven synchronous pulley 73, and a synchronous belt 74. The servo motor 71 is fixedly connected to the worktable 1 by a bracket. The output shaft of the servo motor 71 is parallel to the axis of the lead screw 61. The output shaft of the servo motor 71 is fixedly connected to the driving synchronous pulley 72. The driven synchronous pulley 73 is sleeved and fixed to one end of the lead screw 61. The synchronous belt 74 is sleeved on the outer edge of the driving synchronous pulley 72 and the driven synchronous pulley 73. The limiting slide 8 has abutment posts 81, U-shaped auxiliary rods 82, horizontal locking nuts 83, and lifting clamps 84. The two abutment posts 81 are vertically arranged on the top surface of the limiting slide 8. The lifting clamps 84 are detachably clamped and fixed on any abutment post 81. The U-shaped auxiliary rods 82 are fixedly connected to the side of the limiting slide 8. The horizontal locking nuts 83 are screwed onto the top surface of the limiting slide 8. The horizontal locking nuts 83 are used to press the aluminum profile base 2 to lock the limiting slide 8. The overload protection device 5 includes a locking nut 51, a pressure pad 52, an annular elastic plate 53, a friction plate 54, a rotating column 55, and a pressure ring 56, all sleeved on the torque input shaft. The rotating column 55 has pressure rings 56 at both its top and bottom. The rotating column 55 is radially and fixedly connected to one end of the rocker arm 65. The bottom end of the pressure ring 56 at the bottom of the rotating column 55 is provided with a locking nut 51 that is screwed and fixed to the torque input shaft. The pressure ring 56 is axially slidably connected to the torque input shaft through a keyway. Friction plates 54 are provided on the contact end faces of the pressure ring 56 and the rotating column 55. Multiple annular elastic plates 53 are stacked on the top surface of the pressure ring 56 at the top of the rotating column 55. The top end of the annular elastic plate 53 is provided with a pressure pad 52. The top end of the pressure pad 52 is provided with a locking nut 51 that is screwed to the torque input shaft. The annular elastic plate 53 forces the pressure ring 56 to press the friction plate 54 against the end face of the rotating column 55. The conversion assembly 9 includes a conversion post 91 and a buffer post 92. The top end of the conversion post 91 has a hexagonal groove for inserting and fixing the buffer post 92, and the bottom end of the conversion post 91 has a square shaft for inserting the output shaft of the torque sensor. The buffer post 92 has a housing 921, a telescopic rod 922, a sleeve rod 923, a compression ring 924, a return spring 925, and an annular spring 926. The bottom end of the telescopic rod 922 is screwed into the bottom opening of the housing 921 via a thread, and the sleeve rod 923 is rotatably connected. The outer casing 921 has an opening at the top. The top of the sleeve rod 923 has a quadrilateral groove for inserting the torque tool output shaft. The top of the telescopic rod 922 is axially slidably connected to the bottom of the sleeve rod 923 via a spline. The telescopic rod 922 has an abutment flange in the middle. The return spring 925 is sleeved on the outer edge of the telescopic rod 922 located between the sleeve rod 923 and the abutment flange. The bottom end of the abutment flange is sequentially sleeved with a compression ring 924 and an annular spring 926. The compression ring 924 is rotatably connected to the abutment flange. The workbench 1 end face is also equipped with an emergency stop button and multiple control buttons; A display screen for displaying data is fixedly connected to the side of the workbench 1 via a bracket; With the above settings, its specific working principle in actual operation is as follows: When calibrating a manual torque tool: According to the torque value of the tool, insert and fix the rotating end of the tool onto the torque output shaft at the top of the appropriate torque sensor 4, and ensure that the handle of the tool is against the side of the abutment post 81 of the limit slide 8. Then press the start button on the end face of the worktable 1 to start the servo motor 71. The power of the servo motor 71 drives the lead screw 61 to rotate through the active synchronous pulley 72, the driven synchronous pulley 73 and the synchronous belt 74. The lead screw 61 drives the drive block 63 to move to one side. Since the sliding shaft 66 at the bottom of the drive block 63 is inserted into the waist-shaped groove 651 opened at one end of the rocker arm 65, and the other end of the rocker arm 65 is fixedly connected to the rotating column 55, the drive block 63 can drive the rotating column 55 to rotate through the rocker arm 65 when it moves to one side. Because the ring-shaped elastic plate 53 forces the pressure ring 56 to press the friction plate 54 against the end face of the rotating column 55, the rotating column 55 and the pressure ring 56 are in a static friction state. At this time, the rotating column 55 synchronously drives the pressure ring 56 to rotate during the rotation process. Since the pressure ring 56 and the torque input shaft are axially slidably connected through a keyway, the pressure ring 56 can synchronously drive the torque input shaft to rotate. The torque sensor 4 can calibrate and set manual torque tools by detecting the torque values ​​of the torque input shaft and the torque output shaft.

[0010] When calibrating the electric torque tool: insert the square shaft at the bottom of the conversion column 91 into the output shaft of the torque sensor, insert the buffer column 92 into the hexagonal groove at the top of the conversion column 91, insert the output shaft of the electric torque tool into the quadrilateral slot of the sleeve 923 at the top of the buffer column 92, and limit the handle of the electric torque tool through the limiting slide 8; During the test, the electric torque tool is started, which drives the sleeve 923 to rotate. The sleeve 923 drives the telescopic rod 922 to rotate synchronously through the spline. Since the bottom end of the telescopic rod 922 is screwed into the bottom opening of the outer shell 921 through the thread, the telescopic rod 922 is screwed downwards while rotating. During this process, the compression ring 924 in the middle of the telescopic rod 922 compresses the spring piece 924. When the ring spring piece 926 is fully compressed, the telescopic rod 922 can no longer be screwed downwards. During this process, the torque output by the electric tool is linearly transmitted to the torque sensor 4, thereby realizing the calibration of the electric torque tool.

[0011] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A multifunctional torque testing bench, characterized in that, It includes a worktable, an aluminum profile base, electrical components, a torque sensor, an overload protection device, a torque assembly, a servo drive assembly, a limit slide, and a conversion assembly; An aluminum profile base is fixedly connected to the center of the top surface of the workbench. Electrical components for data acquisition and power supply are installed inside the workbench. A movable limiting slide is provided on one side of the aluminum profile base, and two torque sensors are arranged on the other side of the aluminum profile base. The torque sensors are fixedly connected to the aluminum profile base and extend into the workbench. The top of the torque sensor has a torque output shaft, and the bottom of the torque sensor has a torque input shaft. The overload protection device is connected to the input shaft at the bottom of the torque sensor. The torque output shaft at the top of the torque sensor has a detachable conversion component. Both the servo drive component and the torque component are located inside the workbench. The torque component converts the power from the servo drive component into torque to drive the overload protection device.

2. The multifunctional torque testing bench according to claim 1, characterized in that, The torque assembly includes a lead screw, guide rods, a drive block, a U-shaped bracket, a swing arm, and a sliding shaft. The U-shaped bracket has a horizontal leg and vertical legs arranged on both sides. The horizontal leg of the U-shaped bracket is fixedly connected to the bottom surface of the workbench. The two ends of the lead screw pass through the two vertical legs of the U-shaped bracket and are rotatably connected to them. Guide rods are provided on both sides of the lead screw and are fixedly connected to the vertical legs of the U-shaped bracket. The drive block is located in the middle of the two vertical legs of the U-shaped bracket. The lead screw passes through the drive block and engages with it. The guide rod passes through the drive block and is slidably connected to it. A sliding shaft is fixedly connected to the center of the bottom surface of the drive block. One end of the swing arm is fixedly connected to an overload protection device. The other end of the swing arm has an oblong groove, and the sliding shaft slides inside the oblong groove.

3. The multifunctional torque testing bench according to claim 1, characterized in that, The servo drive assembly includes a servo motor, a driving synchronous pulley, a driven synchronous pulley, and a synchronous belt. The servo motor is fixedly connected to the worktable via a bracket. The output shaft of the servo motor is parallel to the axis of the lead screw. The driving synchronous pulley is fixedly connected to the output shaft of the servo motor. The driven synchronous pulley is sleeved and fixed to one end of the lead screw. The synchronous belt is sleeved on the outer edges of the driving and driven synchronous pulleys.

4. The multifunctional torque testing bench according to claim 1, characterized in that, The limiting slide has abutment posts, U-shaped auxiliary rods, horizontal locking nuts, and lifting clamps. Two abutment posts are vertically arranged on the top surface of the limiting slide. The lifting clamp is detachably clamped and fixed on any abutment post. The U-shaped auxiliary rod is fixedly connected to the side of the limiting slide. The horizontal locking nut is screwed onto the top surface of the limiting slide and is used to press the aluminum profile base to lock the limiting slide.

5. A multifunctional torque testing bench according to claim 1, characterized in that, The overload protection device includes a locking nut, pressure pads, annular elastic plates, friction plates, a rotating column, and a pressure ring, all sleeved on the torque input shaft. The rotating column has pressure rings at both its top and bottom. The rotating column is radially and fixedly connected to one end of a rocker arm. The bottom end of the pressure ring at the bottom of the rotating column is provided with a locking nut that screws onto the torque input shaft. The pressure ring and the torque input shaft are axially slidably connected via a keyway. Friction plates are provided on the contact surfaces of the pressure ring and the rotating column. Multiple annular elastic plates are stacked on the top surface of the pressure ring at the top of the rotating column. A pressure pad is provided at the top of each annular elastic plate, and a locking nut that screws onto the torque input shaft is provided at the top of each pressure pad. The annular elastic plates force the pressure ring to press the friction plates against the end face of the rotating column.

6. A multifunctional torque testing bench according to claim 1, characterized in that, The conversion assembly includes a conversion column and a buffer column. The top of the conversion column has a hexagonal groove for inserting and fixing the buffer column, and the bottom of the conversion column has a square shaft for inserting the output shaft of the torque sensor. The buffer column has a housing, a telescopic rod, a sleeve rod, a compression ring, a return spring, and an annular spring. The bottom of the telescopic rod is screwed into the bottom opening of the housing through a thread. The sleeve rod is rotatably connected to the top opening of the housing. The top of the sleeve rod has a quadrilateral slot for inserting the output shaft of the torque tool. The top of the telescopic rod is axially slidably connected to the bottom of the sleeve rod through a spline. The telescopic rod has an abutment flange in the middle. The return spring is sleeved on the outer edge of the telescopic rod located between the sleeve rod and the abutment flange. The bottom end of the abutment flange is sequentially sleeved with a compression ring and an annular spring. The compression ring is rotatably connected to the abutment flange.

7. A multifunctional torque testing bench according to claim 1, characterized in that, The workbench end face is also equipped with an emergency stop button and multiple control buttons.

8. A multifunctional torque testing bench according to claim 1, characterized in that, The workbench is fixedly connected to a display screen for displaying data via a bracket.

Images