Force sensor verification and calibration device convenient to adjust

Abstract

The utility model provides a force sensor verification and calibration device convenient to adjust, which relates to the field of force sensor verification and calibration equipment, and comprises a calibration table, a base, a top plate positioned above the base, and a support column and a calibration assembly positioned between the base and the top plate, comprising a PC controller, a servo air cylinder fixed to the top of the top plate and a loading actuator fixed to the output end of the servo air cylinder. According to the utility model, the position and angle of the multi-dimensional force sensor to be calibrated can be adjusted in the horizontal and vertical directions through the transverse moving assembly and the overturning assembly, the force sensor can be calibrated from multiple dimensions, various stress conditions of the force sensor in actual use can be simulated, the measurement accuracy of the sensor under different working conditions can be ensured, and the measurement precision of the sensor can be improved. A ball screw, a ball nut, a first motor and a speed reducer of the transverse moving assembly work cooperatively, horizontal movement of a supporting plate can be achieved, and the horizontal position of the sensor to be calibrated can be adjusted conveniently.

Description

TECHNICAL FIELD

[0001] The utility model belongs to force sensor calibrating and adjusting device field, concretely is a kind of force sensor calibrating and adjusting device of convenient adjustment. BACKGROUND

[0002] The calibration of force sensor is an important device to ensure its measurement accuracy and reliability, and the calibration method is usually carried out by electric loading, and the weight calibration method, the electric actuator loading method mainly generates force through electric actuator, and measures the actual force value using high-precision sensor, and is suitable for dynamic calibration;And the weight loading method is to directly act on the sensor using the gravity of standard weight, and is suitable for occasions with high precision requirements, and multi-dimensional force sensor needs to be calibrated by force sensor calibration device regularly during use to ensure its detection accuracy;

[0003] According to Chinese patent application No.202420357878.X, a six-dimensional force sensor comprehensive calibration device is disclosed, which is composed of a calibration frame, a support column, a bottom beam frame, a top beam frame, a sensor force device, an adjustable transition plate, a boss, a pulley, a bottom beam, a top support column and a positioning platform. The transition plate is provided with fixing pin holes and bolt holes for fixing the six-dimensional force sensor, and can realize simultaneous multi-directional force loading. The difficulty of manual operation is reduced, the error is reduced, the repeatability of calibration is good, and the measurement accuracy is higher.

[0004] The prior art effectively solves the problem of complex structure and inconvenient operation of the multi-dimensional force sensor calibration device, and has the advantages of simple structure and convenient use, but the multi-dimensional force sensor needs to be calibrated at different positions during calibration, and the traditional calibration device is not convenient for adjusting the calibration position of the multi-dimensional force sensor, thereby affecting the calibration efficiency.

[0005] Therefore, the utility model provides a force sensor calibration device for easy adjustment to solve the above problems. Utility model content

[0006] To solve the above technical problems, the utility model provides the following technical scheme:

[0007] A kind of force sensor verification calibration device of convenient adjustment, including calibration platform, including base, top plate located above the base, and support column between the base and top plate, calibration component, including PC controller, servo cylinder fixed at the top of the top plate, loading executor fixed at the output end of the servo cylinder, standard force sensor fixed at one end of the loading executor, and display fixed on the surface of the support column, transverse shift component, including support plate, ball screw rod fixedly connected with the base by bearing, ball nut and sliding seat fixed at the bottom of the support plate, first motor fixed at the top of the base, speed reducer and guide rod, and drag chain for the guide of the support plate, overturning component, including U-shaped seat, load-bearing table located in the upper end of the inner cavity of the U-shaped seat, second motor fixed on the surface of the U-shaped seat, protective cover and third motor fixed at the bottom of the support plate, worm gear installed in the inner cavity of the protective cover, and worm gear meshing with the worm gear.

[0008] Further, in the utility model, the U-shaped seat is located at the top of the support plate, the output shaft of the second motor is in transmission connection with the load-bearing table, the other end of the load-bearing table is movably connected with the inner wall of the U-shaped seat through bearing, and the load-bearing table is used for bearing multi-dimensional force sensor.

[0009] Further, in the utility model, the output shaft of the third motor is in transmission connection with the worm gear, and the worm gear is connected between the U-shaped seat through transmission shaft.

[0010] Further, in the utility model, the two ends of the support column are fixedly connected with the base and the top plate respectively, and the output end of the servo cylinder penetrates to the bottom of the top plate.

[0011] Further, in the utility model, the output shaft of the first motor is in transmission connection with the input shaft of the speed reducer, the output shaft of the speed reducer is in transmission connection with the ball screw rod, the ball nut is sleeved on the surface of the ball screw rod and is in screw connection with the ball screw rod.

[0012] Further, in the utility model, the sliding seat is in surface sliding connection with the guide rod, one end of the drag chain is fixedly connected with the support plate, and the other end of the drag chain is fixedly connected with the base.

[0013] Further, in the utility model, the output end of the standard force sensor is connected with the input end of the PC controller, and the output end of the PC controller is connected with the input end of the servo cylinder, the display, the first motor, the second motor and the third motor respectively.

[0014] Beneficial effects, the utility model has following beneficial effects:

[0015] This invention, through a horizontal movement component and a flipping component, allows for the adjustment of the position and angle of the multi-dimensional force sensor to be calibrated in the horizontal and vertical directions. It enables calibration of the force sensor from multiple dimensions, simulating various force conditions encountered in actual use, and ensuring the measurement accuracy of the sensor under different working conditions. The ball screw, ball nut, first motor, and reducer of the horizontal movement component work together to achieve horizontal movement of the support plate. The horizontal position of the sensor to be calibrated can be easily adjusted according to calibration requirements, making operation simple and quick. The second and third motors in the flipping component can respectively control the flipping of the support platform and the rotation of the U-shaped seat, allowing the force sensor to be calibrated at different angles. This multi-angle calibration method greatly improves the applicability of the device and can meet the calibration requirements of different types of force sensors. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the base and the transverse component of this utility model;

[0018] Figure 3 This is a bottom view of the flip-up component of this utility model;

[0019] Figure 4 This is a schematic diagram showing the connection structure of the servo cylinder, the loading actuator, and the standard force sensor of this utility model.

[0020] In the picture:

[0021] 100. Calibration platform; 110. Base; 120. Top; 130. Support column; 200. Calibration assembly; 210. PC controller; 220. Servo cylinder; 230. Loading actuator; 240. Standard force sensor; 250. Display; 300. Lateral movement assembly; 310. Support plate; 320. Ball screw; 330. Ball nut; 340. Cable chain; 350. First motor; 360. Reducer; 370. Slide; 380. Guide rod; 400. Tilting assembly; 410. U-shaped seat; 420. Bearing platform; 430. Second motor; 440. Protective cover; 450. Third motor; 460. Worm gear; 470. Worm wheel. Detailed Implementation

[0022] For a better understanding of the technical content of the present application, specific embodiments are described below with the accompanying drawings. In the present disclosure, the aspects of the present application are described with reference to the accompanying drawings, which show many embodiments of the description. The embodiments of the present disclosure are not necessarily defined in all aspects of the present application. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of a number of ways, as the concepts and embodiments disclosed herein are not limited to any implementation. In addition, some aspects of the present application can be used alone, or in any appropriate combination with other aspects of the present application.

[0023] Embodiment 1

[0024] As Figures 1-4 shown, the first embodiment of the present application provides a force sensor calibration device for easy adjustment, which comprises a calibration table 100, a calibration assembly 200, a horizontal movement assembly 300 and a turnover assembly 400. The calibration table 100 comprises a base 110, a top plate 120 located above the base 110, and a support column 130 located between the base 110 and the top plate 120. The calibration assembly 200 comprises a PC controller 210, a servo cylinder 220 fixed to the top of the top plate 120, a loading actuator 230 fixed to the output end of the servo cylinder 220, a standard force sensor 240 fixed to one end of the loading actuator 230, and a display 250 fixed to the surface of the support column 130. The horizontal movement assembly 300 comprises a support plate 310, a ball screw 320 fixedly connected to the base 110 through a bearing, a ball nut 330 and a sliding seat 370 fixed to the bottom of the support plate 310, a first motor 350, a speed reducer 360 and a guide rod 380 fixed to the top of the base 110, and a drag chain 340 for guiding the support plate 310. The turnover assembly 400 comprises a U-shaped seat 410, a bearing table 420 located at the upper end of the inner cavity of the U-shaped seat 410, a second motor 430 fixed to the surface of the U-shaped seat 410, a protective cover 440 and a third motor 450 fixed to the bottom of the support plate 310, a worm gear 470 installed in the inner cavity of the protective cover 440, and a worm 460 engaged with the worm gear 470.

[0025] As Figures 1-4As shown, the calibration table 100 is composed of a base 110, a top plate 120 and support columns 130, the support columns 130 fixedly connect the base 110 and the top plate 120, forming a stable frame structure, providing a basis for installation and operation of the calibration assembly 200, the horizontal moving assembly 300 and the overturning assembly 400, the first motor 350 output shaft in the horizontal moving assembly 300 is in transmission connection with the speed reducer 360 input shaft, the speed reducer 360 output shaft drives the ball screw 320 to rotate, since the ball nut 330 is sleeved on the surface of the ball screw 320 and is in threaded connection, when the ball screw 320 rotates, the support plate 310 fixed with the ball nut 330 is driven to move horizontally and linearly, at the same time, the sliding seat 370 slides on the surface of the guide rod 380, the drag chain 340 guides the support plate 310, ensuring the stability of the movement, so that the multi-dimensional force sensor can be conveniently moved to different horizontal positions for calibration, solving the inconvenience of the traditional calibration device in horizontal position adjustment, the overturning assembly 400 has the function of multi-angle adjustment of the multi-dimensional force sensor, the output shaft of the second motor 430 is in transmission connection with the bearing table 420, so that the bearing table 420 bearing the multi-dimensional force sensor can rotate around the shaft, changing the inclination angle of the multi-dimensional force sensor, in addition, the third motor 450 drives the worm 460 to rotate, the worm 460 is in meshing with the worm wheel 470, the worm wheel 470 and the U-shaped seat 410 are in rotation through a transmission shaft, further increasing the angle adjustment range of the multi-dimensional force sensor, so that different angles of the multi-dimensional force sensor can be calibrated, overcoming the limitation of the traditional calibration device in angle adjustment, through the horizontal moving assembly 300 and the overturning assembly 400, flexible adjustment of the multi-dimensional force sensor in horizontal position and angle is realized, combined with the unified control of the PC controller 210, the inconvenience problem of the traditional calibration device in calibration position adjustment is effectively solved, and the calibration efficiency is improved.

[0026] Embodiment 2

[0027] Refer to Figures 1-4 , the second embodiment of the utility model, this embodiment is based on the last embodiment.

[0028] In this embodiment, the U-shaped seat 410 is located at the top of the support plate 310, the output shaft of the second motor 430 is in transmission connection with the bearing table 420, the other end of the bearing table 420 is movably connected with the inner wall of the U-shaped seat 410 through a bearing, and the bearing table 420 is used for bearing the multi-dimensional force sensor.

[0029] The output shaft of the third motor 450 is in transmission connection with the worm 460, and the worm wheel 470 is connected with the U-shaped seat 410 through a transmission shaft.

[0030] The two ends of the support column 130 are fixedly connected with the base 110 and the top plate 120 respectively, and the output end of the servo air cylinder 220 penetrates to the bottom of the top plate 120.

[0031] The output shaft of the first motor 350 is connected to the input shaft of the reducer 360, the output shaft of the reducer 360 is connected to the ball screw 320, and the ball nut 330 is sleeved on the surface of the ball screw 320 and threadedly connected to the ball screw 320.

[0032] The slide block 370 and the guide rod 380 are slidably connected. One end of the drag chain 340 is fixedly connected to the support plate 310, and the other end of the drag chain 340 is fixedly connected to the base 110.

[0033] The output of the standard force sensor 240 is connected to the input of the PC controller 210, and the output of the PC controller 210 is connected to the input of the servo cylinder 220, the display 250, the first motor 350, the second motor 430 and the third motor 450 respectively.

[0034] like Figures 1-4 As shown, the PC controller 210 serves as the control core of the entire device. Its output terminals are connected to the input terminals of the servo cylinder 220, display 250, first motor 350, second motor 430, and third motor 450, respectively. The operator can use the PC controller 210 to uniformly control each component, enabling rapid and accurate adjustment of the position and angle of the multi-dimensional force sensor. The standard force sensor 240 transmits the detected data to the PC controller 210, which then adjusts each component based on the data and displays the relevant information on the display 250. This allows the operator to monitor the calibration status in real time, greatly improving the calibration efficiency of the multi-dimensional force sensor.

[0035] In use, the multi-dimensional force sensor is first fixed to the surface of the support platform 420 with bolts. The PC controller 210 sends a command to the first motor 350, and the first motor 350 starts to run. Its output shaft drives the input shaft of the reducer 360 to rotate. After the reducer 360 adjusts the speed, it transmits the power to the ball screw 320. Since the ball nut 330 is fitted on the surface of the ball screw 320 and is threaded, the rotation of the ball screw 320 will cause the ball nut 330 to move linearly along the screw, thereby driving the support plate 310 to move. The slide 370 slides on the surface of the guide rod 380 to provide guidance for the movement of the support plate 310. The drag chain 340 ensures the orderly arrangement and protection of the circuit during the movement of the support plate 310, thereby realizing the horizontal position adjustment of the multi-dimensional force sensor.

[0036] The PC controller 210 controls the third motor 450 to start, the output shaft of the third motor 450 drives the worm 460 to rotate, the worm 460 is engaged with the worm gear 470, so that the worm gear 470 rotates, because the worm gear 470 is connected with the U-shaped seat 410 through the transmission shaft, the rotation of the worm gear 470 drives the U-shaped seat 410 to rotate, so that the rotation of the multi-dimensional force sensor on the bearing table 420 is realized, at the same time, the PC controller 210 can also control the second motor 430, the output shaft of the second motor 430 drives the bearing table 420 to rotate, so that the multi-dimensional force sensor is further adjusted in the U-shaped seat 410, after the position adjustment is completed, the PC controller 210 controls the servo air cylinder 220 to work, the output end of the servo air cylinder 220 extends, pushes the loading executor 230 to move downwards, the loading executor 230 applies force to the multi-dimensional force sensor, the standard force sensor 240 can measure the force value in real time, and the data is transmitted to the PC controller 210, the PC controller 210 receives the data transmitted by the standard force sensor 240, compares and analyzes the measurement data of the multi-dimensional force sensor, and the analysis result is displayed through the display 250, so that the operator can intuitively see various data and results in the calibration process, so that the force loading calibration of the multi-dimensional force sensor at different positions and angles is realized.

[0037] The standard parts used in the application file can be purchased from the market, and can be ordered according to the description and drawings, and the specific connection mode of each part adopts the conventional bolt, rivet, welding and other conventional means in the prior art, the mechanical, parts and equipment adopt the conventional type in the prior art, the control mode is automatically controlled through the controller, and the control circuit of the controller can be realized by simple programming of the person skilled in the art, which belongs to the common knowledge in the art, and the application is mainly used to protect the mechanical device, so the control mode and circuit connection are not explained in detail.

[0038] Although the utility model has disclosed as above with preferred embodiment, it is not used to limit the utility model. Those skilled in the art of the utility model belong to, when can make various changes and decorations without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model should be defined as the right claim.

Claims

1. A force sensor verification calibration device that facilitates adjustment, characterized by: The utility model relates to a multi-dimensional force sensor calibration device, including, The calibration assembly (200) includes a PC controller (210), a servo cylinder (220) fixed to the top of the top plate (120), a loading executor (230) fixed to the output end of the servo cylinder (220), a standard force sensor (240) fixed to one end of the loading executor (230), and a display (250) fixed to the surface of the support column (130); The horizontal moving assembly (300) includes a support plate (310), a ball screw (320) fixedly connected with the base (110) through a bearing, a ball nut (330) and a sliding seat (370) fixed to the bottom of the support plate (310), a first motor (350) fixed to the top of the base (110), a speed reducer (360) and a guide rod (380), and a drag chain (340) for guiding the support plate (310); The overturning assembly (400) includes a U-shaped seat (410), a bearing table (420) located at the upper end of the inner cavity of the U-shaped seat (410), a second motor (430) fixed to the surface of the U-shaped seat (410), a protective cover (440) and a third motor (450) fixed to the bottom of the support plate (310), a worm gear (470) installed in the inner cavity of the protective cover (440), and a worm (460) engaged with the worm gear (470). The U-shaped seat (410) is located at the top of the support plate (310), the output shaft of the second motor (430) is drivingly connected with the bearing table (420), the other end of the bearing table (420) is movably connected with the inner wall of the U-shaped seat (410) through a bearing, and the bearing table (420) is used for bearing a multi-dimensional force sensor.

2. The force sensor calibration device of claim 1, wherein: The output shaft of the third motor (450) is drivingly connected with the worm (460), and the worm gear (470) is connected with the U-shaped seat (410) through a transmission shaft.

3. The force sensor calibration device of claim 1, wherein: The two ends of the support column (130) are fixedly connected with the base (110) and the top plate (120) respectively, and the output end of the servo cylinder (220) penetrates to the bottom of the top plate (120).

4. The force sensor calibration device of claim 1, wherein: The output shaft of the first motor (350) is drivingly connected with the input shaft of the speed reducer (360), the output shaft of the speed reducer (360) is drivingly connected with the ball screw (320), the ball nut (330) is sleeved on the surface of the ball screw (320) and is threadedly connected with the ball screw (320).

5. The force sensor calibration and verification device that is easy to adjust as described in claim 1, characterized in that: The sliding seat (370) is slidingly connected with the surface of the guide rod (380), one end of the drag chain (340) is fixedly connected with the support plate (310), and the other end of the drag chain (340) is fixedly connected with the base (110).

6. The force sensor calibration device of claim 1, wherein: ​ 7. The force sensor calibration and verification device that is easy to adjust as described in claim 1, characterized in that: The output end of the standard force sensor (240) is connected with the input end of the PC controller (210), and the output end of the PC controller (210) is respectively connected with the input end of the servo cylinder (220), the display (250), the first motor (350), the second motor (430) and the third motor (450).

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