A multifunctional mechanical jaw for digital multimeter calibration test

Abstract

A multifunctional mechanical gripper for digital multimeter calibration test relates to the technical field of digital multimeter calibration, which comprises a base, a mechanical arm fixedly installed on the base, a gripper mechanism installed at the end of the mechanical arm, the gripper mechanism comprising a frame body, a clamping part for grabbing a digital multimeter installed in the frame body, the gripper end of the clamping part being capable of extending out of the bottom of the frame body, an operation unit for performing calibration operation being installed on the back of the frame body, and a camera rack and a light source rack being installed on the side of the frame body, which are used to solve the problems of low equipment utilization and high calibration cost.

Description

Technical Field

[0001] The utility model relates to the field of digital multimeter calibration technology, specifically to a multifunctional mechanical gripper for digital multimeter calibration testing. Background Technology

[0002] Digital multimeters are generally divided into three types: handheld, benchtop, and laboratory. Handheld digital multimeters often require calibration after manufacturing to ensure accurate readings during subsequent use.

[0003] The calibration process for digital multimeters also involves the transport and adjustment of the multimeter knobs. Currently, in the calibration pipeline for digital multimeters, the transport operation can be completed by transport equipment, while the knob adjustment operation is generally still done manually. This results in low utilization of transport equipment and increased overall cost of the calibration process due to the addition of labor costs.

[0004] Therefore, we propose a device that can improve equipment utilization and reduce calibration costs. Utility Model Content

[0005] The purpose of this invention is to provide a multifunctional mechanical gripper for calibration testing of digital multimeters, which solves the problems of low equipment utilization and high calibration costs.

[0006] This utility model is achieved through the following technical solution: A multifunctional mechanical gripper for calibration testing of a digital multimeter includes a base on which a robotic arm is fixedly mounted. A gripper mechanism is mounted at the end of the robotic arm. The gripper mechanism includes a frame, in which a clamping part for gripping the digital multimeter is mounted. The gripper end of the clamping part can extend out of the bottom of the frame. An operating unit for performing calibration operations is mounted on the back of the frame. A camera mount and a light source mount are mounted on the side of the frame.

[0007] Furthermore, the robotic arm is a two-degree-of-freedom robotic arm.

[0008] Furthermore, the number of clamping parts is set to two, and the two clamping parts are used to clamp a digital multimeter at the same time.

[0009] Furthermore, the clamping part includes two telescopic cylinders, which are fixedly installed in the frame body, and the telescopic ends of the two telescopic cylinders face opposite directions. The telescopic ends of the two telescopic cylinders are respectively fixedly connected to a clamping rod; the ends of the two clamping rods extend out of the bottom of the frame body and are used to clamp a digital multimeter.

[0010] Furthermore, an extension rod is fixedly provided at the end of each of the two clamping rods, and the two extension rods are used to clamp a digital multimeter.

[0011] Furthermore, the operating unit includes a lifting cylinder, a sliding seat, a paddle, and a pen holder, wherein the lifting cylinder is fixedly installed on the back of the frame, and the telescopic end of the lifting cylinder is fixedly connected to the sliding seat, and the paddle and pen holder are installed at the bottom of the sliding seat.

[0012] Furthermore, the number of lifting cylinders is two.

[0013] The technical solution of this utility model has at least the following advantages and beneficial effects: This utility model discloses a multifunctional mechanical gripper for calibration testing of digital multimeters. The robotic arm can complete the transfer operation, while the clamping part and operating unit integrated on the frame can realize the transfer and knob adjustment operation of digital multimeters, thereby improving the utilization rate of equipment and reducing the cost of calibration operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the gripper mechanism of this utility model.

[0015] Reference numerals: 1. Base; 2. Robotic arm; 3. Gripper mechanism; 31. Frame; 32. Gripping part; 321. Telescopic cylinder; 322. Gripping rod; 323. Extension rod; 33. Operating unit; 331. Lifting cylinder; 332. Sliding seat; 333. Paddle; 334. Pen holder; 34. Camera stand; 35. Light source stand. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Example 1 like Figure 1The multifunctional mechanical gripper shown includes a base 1, on which a mechanical arm 2 is fixedly mounted. A gripper mechanism 3 is mounted at the end of the mechanical arm 2. Specifically, the mechanical arm 2 is a two-degree-of-freedom mechanical arm. The mechanical arm 2 can rotate along the horizontal plane of the base 1. When a transfer operation is required, the gripper 32 grasps the digital multimeter, and then the mechanical arm 2 is rotated to transfer the multimeter. When a knob adjustment operation is required, the mechanical arm 2 is rotated to position the operating unit 33 at the corresponding knob position, and the knob is adjusted. Additionally, the mechanical arm 2 is rotated to position the operating unit 33 at the corresponding probe position and grip the probe; then the mechanical arm 2 is rotated to move the probe to the corresponding position. The gripper mechanism 3 includes a frame 31, inside which a gripping part 32 for gripping a digital multimeter is installed, and the gripper end of the gripping part 32 can extend out of the bottom of the frame 31; an operating unit 33 for performing calibration operations is installed on the back of the frame 31; wherein the calibration operation includes adjusting the knob and connecting the probes to the SCP controller.

[0018] A camera mount 34 and a light source mount 35 are installed on the side of the frame 31. A 3D camera is installed on the camera mount 34, and a supplementary light source is installed on the light source mount 35. The 3D camera can acquire image data below the frame 31, and then the image data is sent to the host computer for analysis and recognition, and finally the position of the digital multimeter below the frame 31 is obtained.

[0019] Example 2 In one embodiment, the number of clamping parts 32 is set to two, and the two clamping parts 32 are used to clamp a digital multimeter at the same time; the joint clamping of the two clamping parts 32 can improve the clamping stability of the digital multimeter and prevent the digital multimeter from falling off. Furthermore, the clamping part 32 includes two telescopic cylinders 321, which are fixedly installed inside the frame 31. The telescopic ends of the two telescopic cylinders 321 face opposite directions, and each telescopic end of the two telescopic cylinders 321 is fixedly connected to a clamping rod 322. The ends of the two clamping rods 322 extend out of the bottom of the frame 31 and are used to clamp the digital multimeter. When the two telescopic cylinders 321 extend simultaneously, the distance between the ends of the two clamping rods 322 will increase, thereby releasing the clamping state of the digital multimeter. When the two telescopic cylinders 321 retract simultaneously, the distance between the ends of the two clamping rods 322 will decrease, thereby achieving the clamping of the digital multimeter.

[0020] In addition, an extension rod 323 is fixedly provided at the end of each of the two clamping rods 322. The two extension rods 323 are used to clamp the digital multimeter, which can improve the clamping ability of small digital multimeters.

[0021] Example 3 As one embodiment, the operation unit 33 includes a lifting cylinder 331, a sliding seat 332, a lever 333, and a pen holder 334. The lifting cylinder 331 is fixedly installed on the back of the frame 31, and its telescopic end is fixedly connected to the sliding seat 332. The lever 333 and the pen holder 334 are installed at the bottom of the sliding seat 332. With the cooperation of the robotic arm 2, the operation unit 33 can adjust the knob of the digital multimeter and connect the probes to the SCPI programmable controller. The specific operation process of the operation unit 33 is as follows: After the clamping part 32 completes the transfer of the digital multimeter, the lifting cylinder 331 is first controlled to lower the sliding seat 332, so that the pen holder 334 is lower than the clamping part 32. Then the pen holder 334 clamps the digital multimeter's leads. After that, the robotic arm 2 moves to transfer the leads to the corresponding positions. Finally, the telescopic cylinder 321 retracts the sliding seat 332. When it is necessary to adjust the digital multimeter's knob, the lifting cylinder 331 is first controlled to lower the sliding seat 332, so that the dial 333 is lower than the clamping part 32 and the dial 333 is located at the knob. Then, according to the calibration process, the robotic arm 2 is controlled to rotate along the horizontal plane, and the digital multimeter's knob is adjusted through the dial 333. After the calibration process is completed, the telescopic cylinder 321 retracts the sliding seat 332.

[0022] In addition, there are two lifting cylinders 331, which can improve the support effect on the sliding seat 332.

[0023] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multifunctional mechanical gripper for calibration testing of digital multimeters, characterized in that, The device includes a base (1), on which a robotic arm (2) is fixedly mounted. At the end of the robotic arm (2) is a gripper mechanism (3). The gripper mechanism (3) includes a frame (31), inside which a gripping part (32) for gripping a digital multimeter is installed. The gripper end of the gripping part (32) can extend out of the bottom of the frame (31). An operating unit (33) for performing calibration operations is installed on the back of the frame (31). A camera stand (34) and a light source stand (35) are installed on the side of the frame (31).

2. The multifunctional mechanical gripper for calibration testing of digital multimeters according to claim 1, characterized in that: The robotic arm (2) is a two-degree-of-freedom robotic arm (2).

3. The multifunctional mechanical gripper for calibration testing of digital multimeters according to claim 1, characterized in that: The number of clamping parts (32) is set to two, and the two clamping parts (32) are used to clamp a digital multimeter at the same time.

4. The multifunctional mechanical gripper for calibration testing of digital multimeters according to claim 1, characterized in that: The clamping part (32) includes two telescopic cylinders (321), which are fixedly installed inside the frame (31). The telescopic ends of the two telescopic cylinders (321) face opposite directions. The telescopic ends of the two telescopic cylinders (321) are respectively fixedly connected to a clamping rod (322). The ends of the two clamping rods (322) extend out of the bottom of the frame (31) and are used to clamp a digital multimeter.

5. The multifunctional mechanical gripper for calibration testing of a digital multimeter according to claim 4, characterized in that: Both of the clamping rods (322) are fixedly provided with extension rods (323) at their ends, and the two extension rods (323) are used to clamp a digital multimeter.

6. The multifunctional mechanical gripper for calibration testing of a digital multimeter according to claim 1, characterized in that: The operating unit (33) includes a lifting cylinder (331), a sliding seat (332), a paddle (333), and a pen holder (334). The lifting cylinder (331) is fixedly installed on the back of the frame (31), and the telescopic end of the lifting cylinder (331) is fixedly connected to the sliding seat (332). The bottom of the sliding seat (332) is equipped with a paddle (333) and a pen holder (334).

7. The multifunctional mechanical gripper for calibration testing of digital multimeters according to claim 6, characterized in that: The number of lifting cylinders (331) is two.

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