WO2023000659A1

WO2023000659A1 - Software-defined intelligent fool-proof electric screwdriver

Info

Publication number: WO2023000659A1
Application number: PCT/CN2022/076359
Authority: WO
Inventors: 刘鹏
Original assignee: 苏州超集信息科技有限公司
Priority date: 2021-07-20
Filing date: 2022-02-15
Publication date: 2023-01-26
Also published as: CN113649970B; CN113649970A

Abstract

A software-defined intelligent fool-proof electric screwdriver, comprising a housing and a screw screwing assembly, the screw screwing assembly comprising a rotary shaft (21), which is used for outputting torque, a drive system, a detection system, a first controller (11) and a power source (12), wherein the drive system comprises a rotation driving apparatus (22), which is used for driving the rotation of the rotary shaft, the detection system comprises a torsion detection apparatus (23), and the first controller controls the rotation driving apparatus according to a torsion detected by the torsion detection apparatus. The screw screwing assembly further comprises an AI fool-proof module, the AI fool-proof module comprising a display screen, a camera and a second controller. The first controller also controls the rotation driving apparatus and/or controls an alarm apparatus according to a comparison result of the second controller. By means of the screwdriver, the production efficiency can be improved, the safety of a screw hole of a product can be protected, and damage to the product caused by a manual misoperation can also be avoided.

Description

A smart fool-proof electric screwdriver based on software definition

technical field

The invention relates to the technical field of screw tightening equipment, in particular to an intelligent fool-proof electric screwdriver based on software definition.

Background technique

In the high-performance server industry, especially in motherboard assembly plants, the quality of threaded fastener assembly will directly affect the assembly quality and operational reliability of the entire server. In traditional assembly plants, the order in which workers screw screws is all completed by workers' memory. The requirements of workers are relatively high. Sometimes workers will make wrong screw types, the sequence of screwing may easily lead to rework, and some screw holes may be forgotten to screw, which will affect the assembly efficiency and may cause product damage. How to avoid the above situation is an urgent need in this field. Solved technical problems.

Contents of the invention

For this reason, the technical problem to be solved by the present invention is to overcome the problems in the prior art that workers sometimes make wrong screw types, the order of screwing is easy to cause rework, and some screw holes forget to screw.

In order to solve the above technical problems, the present invention provides a software-defined intelligent anti-fooling electric screwdriver for screwing screws on products, the intelligent anti-fooling electric screwdriver includes a housing and a A screw twisting assembly, the screw twisting assembly includes a rotating shaft for outputting torque, a drive system for driving the rotating shaft, a detection system for detecting the rotating shaft, and a detection system based on the detection information of the detection system. A first controller for controlling the driving system and a power supply for supplying power to the electrical parts of the twisting screw assembly, the driving system includes a rotary driving device for driving the rotating shaft to rotate, and the detection The system includes a torque detection device for detecting the torque on the rotating shaft, and the first controller controls the rotary driving device according to the torque detected by the torque detection device;

The twisting screw assembly also includes an AI fool-proof module, and the AI fool-proof module includes a display screen for displaying the standard assembly information of the current screw and the product, a camera for taking pictures of the actual assembly information of the current screw and the product, and a second controller for comparing the actual assembly information with the standard assembly information and feeding back the comparison result to the first controller, and the first controller also compares the The rotary drive is controlled and/or the alarm is controlled.

Further, the housing includes a first shell and a second shell that are detachably connected, the first controller and the power supply are arranged in the first shell, the rotation drive device and the torque drive The device is arranged in the second shell, the first shell is provided with a first plug-in structure, the second shell is provided with a second plug-in structure, the first controller and the power supply are connected with the first A plug-in structure is electrically connected, and the drive system and the detection system are electrically connected to the second plug-in structure.

Further, the standard assembly information and the actual assembly information include screw models, product models, and screwing processes.

Further, the drive system also includes a telescopic drive mechanism, the telescopic drive mechanism includes a telescopic drive device and a torque adjustment plate, the telescopic part of the telescopic drive device and the torque adjustment plate are connected through pull rods on both sides, so The rotary driving device is mounted on a fixed frame, and the fixed frame is movably arranged between the telescopic driving device and the torque regulating plate, and a spring is installed between the fixed frame and the torque regulating plate. The telescopic driving device drives the torque regulating plate to reciprocate back and forth through the pull rods on both sides, and the torque regulating plate squeezes the spring to control the distance between the torque regulating plate and the rotary driving device.

Further, the housing is provided with buttons for inputting the torque value to the first controller and an LED display screen for displaying the torque value.

Further, the camera and the second controller perform network transmission through the MQTT protocol.

Further, the rotary driving device and the first controller are connected through a CAN bus.

Further, the first controller is an MCU controller.

Further, the rotary drive device includes a rotary motor and a reducer, the reducer is connected to the power output end of the rotary motor, and the rotating shaft is connected to the power output end of the reducer.

The above technical solution of the present invention has the following advantages compared with the prior art:

1) According to the software-defined intelligent fool-proof electric screwdriver disclosed in the present invention, the AI fool-proof module can compare the actual assembly information with the standard assembly information and feed it back to the first controller, and at the same time, the first controller makes corresponding warnings and warnings. It is suggested that the present invention not only improves production efficiency and protects the safety of product screw holes, but also greatly avoids damage to products caused by human misoperation.

2) The intelligent fool-proof electric screwdriver based on software definition disclosed in the present invention can directly input the specified torque value to control the torque of the electric screwdriver, and at the same time, a detection system is added to realize the functions of torque feedback and self-calibration.

Description of drawings

In order to make the content of the present invention more easily understood, the present invention will be further described in detail below according to the specific embodiments of the present invention and in conjunction with the accompanying drawings, wherein,

Fig. 1 is the structural representation of electric screwdriver of the present invention;

Fig. 2 is a working structure diagram of the present invention.

Explanation of reference numerals in the manual: 10, first housing; 11, first controller; 12, power supply; 20, second housing; 21, rotating shaft; 22, rotating drive device; 23, torque detection device; 24, telescopic Driving device; 25, torque adjustment plate; 26, pull rod; 27, spring; 28, fixed frame.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

It should be pointed out that the following detailed descriptions are all exemplary, and are intended to serve as further improvement descriptions for the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should be noted that the terms used here are only used to describe specific implementations, and are not intended to limit exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof. In this disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom" etc. refer to The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only a relative term determined for the convenience of describing the structural relationship between the components or elements of the present disclosure. Public restrictions. In the present disclosure, terms such as "fixed", "connected", and "connected" should be understood in a broad sense, which means that they can be fixedly connected, integrally connected or detachably connected; they can be directly connected or can be connected through an intermediate The medium is indirectly connected. For relevant researchers or technical personnel in the field, the specific meanings of the above terms in the present disclosure can be determined according to specific situations, and should not be construed as limitations on the present disclosure.

Referring to Figure 1 and Figure 2, as shown in the legend, a software-defined intelligent fool-proof electric screwdriver is used to screw screws on products. The above-mentioned intelligent fool-proof electric screwdriver includes a shell and is installed on the shell The torsion screw assembly on the above-mentioned torsion screw assembly includes a rotating shaft 21 for outputting torque, a drive system for driving the above-mentioned rotating shaft to move, a detection system for detecting the above-mentioned rotating shaft, and for The first controller 11 controlled by the above-mentioned driving system and the power supply 12 for supplying power to the electrical components of the above-mentioned twisting screw assembly. The above-mentioned driving system includes a rotary drive device 22 for driving the above-mentioned rotating shaft 21 to rotate. The above-mentioned detection system includes a torque detection device 23 for detecting the torque on the rotating shaft, the first controller 11 controls the rotation driving device 22 according to the torque detected by the torque detection device 23;

The above-mentioned twisting screw assembly also includes an AI fool-proof module, and the above-mentioned AI fool-proof module includes a display screen for displaying the standard assembly information of the current screw and the product, a camera for taking pictures of the actual assembly information of the current screw and the product, and a camera for Comparing the actual assembly information with the standard assembly information and feeding back the comparison result to the second controller of the above-mentioned first controller 11, the above-mentioned first controller 11 also compares the above-mentioned rotary drive device according to the comparison result of the above-mentioned first controller 11 22 to control and/or control the alarm device.

In the above, the AI fool-proof module can compare the actual assembly information with the standard assembly information and feed it back to the first controller. At the same time, the first controller makes corresponding warnings and prompts. This invention not only improves production efficiency and protects product screw holes It is safe and greatly avoids damage to the product due to human misoperation

In a preferred implementation of this embodiment, the housing includes a detachably connected first housing 10 and a second housing 20, the first controller 21 and the power supply 21 are arranged in the first housing 10, and the rotation drive The device 22 and the torque detection device 23 are arranged in the second housing 20, the first housing 10 is provided with a first plug-in structure, the second housing 20 is provided with a second plug-in structure, the first controller 20 and The power supply 21 is electrically connected to the first plug-in structure, and the driving system and the detection system are electrically connected to the second plug-in structure.

In a preferred implementation manner in this embodiment, the above-mentioned standard assembly information and the above-mentioned actual assembly information include screw models, product models, and screw-driving processes.

In the preferred implementation mode of this embodiment, the above-mentioned drive system also includes a telescopic drive mechanism, the above-mentioned telescopic drive mechanism includes a telescopic drive device 24 and a torsion adjustment plate 25, and the telescopic part of the above-mentioned telescopic drive device 24 and the above-mentioned torsion adjustment plate 25 pass through two sides The pull rod 26 is connected, the above-mentioned rotary driving device 22 is installed on a fixed frame 28, and the fixed frame 28 is movably arranged between the described telescopic driving device 24 and the described torque adjusting plate 25, and the above-mentioned rotary driving device 22 and A spring 27 is installed between the above-mentioned torsion adjustment plates 25, and the above-mentioned telescopic drive device 24 drives the above-mentioned torsion adjustment plates 25 to reciprocate back and forth through the pull rods 26 on both sides. The distance between the above-mentioned rotary driving devices 22 .

In a preferred implementation of this embodiment, the housing is provided with a button for inputting a torque value to the first controller and an LED display screen for displaying the torque value.

In the above, the screwdriver can directly input the specified torque value to control the torque of the electric screwdriver, and a detection system is added to realize the torque feedback and self-calibration functions

In a preferred implementation manner in this embodiment, the above-mentioned camera and the above-mentioned second controller perform network transmission through the MQTT protocol.

In the above, the MQTT protocol has the characteristics of being simple and easy to implement, supporting QoS, and small packets.

In a preferred implementation manner in this embodiment, the above-mentioned rotary driving device 22 and the above-mentioned first controller 11 are connected through a CAN bus.

In the above, the CAN bus has a long transmission distance, strong real-time performance and anti-electromagnetic interference ability, and low cost.

In a preferred implementation manner in this embodiment, the above-mentioned first controller 11 is an MCU controller.

In the above, the MCU controller can specifically use stm32 or raspberry pie.

In a preferred implementation of this embodiment, the above-mentioned rotary drive device 22 includes a rotary motor and a reducer, the reducer is connected to the power output end of the rotary motor, and the rotating shaft is connected to the power output end of the reducer.

The present invention provides an intelligent fool-proof electric screwdriver based on software definition. The principle of the present invention is introduced as follows:

The present invention includes a torque adjustment part and an AI fool-proof alarm part:

In the torque adjustment part, the first controller 11 controls the telescopic driving device 24 to drive the torque adjustment plate 25 to squeeze the spring 27 to adjust the maximum torque. Mainly the telescopic driving device 24 moves forward and backward in a straight line, driving the pull rod 26 to drive the torque adjustment plate 25 to move forward and backward to squeeze the spring 27 to achieve the function of electric adjustment. A large number of experimental data prove that the torque adjustment plate The closer the distance between the 25 distance and the rotary drive device 22 is, the larger the torque output by the screwdriver becomes a linear relationship, otherwise the torque becomes smaller and smaller, so that the purpose of controlling the size of the torque can be achieved by controlling the telescopic distance of the telescopic drive device 24. By comparing the feedback torque value of the cutter head torque detection device 23 with the torque value of the AI terminal, the first controller 11 can realize the torque value set by the user and the self-calibration function. One end of the rotating shaft of the electric screwdriver is connected to the torque detection device 23, and the output of the other end can be connected to various types of screwdriver bits, so that the hardware has an actuator (telescopic drive device 24), controlled object (screwdriver bit), measurement With the PID closed-loop control of the unit (torque detection device 23), the start and stop of the motor screwing with PID control will be gentle and stable, which can effectively prevent the screwdriver bit and the screw from slipping.

The AI fool-proof alarm part is divided into two parts. One is the display screen used to display the standard assembly information of the current screw and the product, and the camera used to take pictures of the actual assembly information of the current screw and the product, and the actual assembly information and the camera. The standard assembly information is compared and the comparison result is fed back to the second controller of the first controller 11 . The display screen shows the product model to be screwed next, the screw model and the sequence of the next screw to be screwed and the situation of missing screws in the product. The sequence and the screw hole of the product are photographed and uploaded to the second controller. The second controller performs real-time artificial intelligence identification and collects data from the controller to make standard judgments and feeds back to the first controller 11 and the front end to make corresponding early warnings. And tips to ensure the safety of workers, screws and products.

Apparently, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in various forms can also be made. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the scope of protection of the present invention.

Claims

A software-defined intelligent anti-fooling electric screwdriver for screwing screws on products, the intelligent anti-fooling electric screwdriver includes a housing and a twisting screw assembly installed on the housing, the twisting screw assembly includes A rotating shaft for outputting torque, a driving system for driving the rotating shaft to move, a detection system for detecting the rotating shaft, and a first device for controlling the driving system according to the detection information of the detection system. A controller and a power supply for supplying power to the electrical parts of the twisting screw assembly, the driving system includes a rotating drive device for driving the rotating shaft to rotate, and the detection system includes A torque detection device for torque, the first controller controls the rotation driving device according to the torque detected by the torque detection device;

It is characterized in that, the twisting screw assembly also includes an AI fool-proof module, and the AI fool-proof module includes a display screen for displaying the standard assembly information of the current screw and the product, and is used to carry out the actual assembly information of the current screw and the product. A camera for taking pictures and a second controller for comparing the actual assembly information with the standard assembly information and feeding back the comparison result to the first controller. As a result, the rotary drive is actuated and/or the warning device is actuated.
The intelligent fool-proof electric screwdriver based on software definition according to claim 1, wherein the housing includes a first shell and a second shell that are detachably connected, and the first controller and the The power supply is arranged in the first casing, the rotation driving device and the torque driving device are arranged in the second casing, the first casing is provided with a first plug-in structure, and the second casing is provided with In the second plug-in structure, the first controller and the power supply are electrically connected to the first plug-in structure, and the driving system and the detection system are electrically connected to the second plug-in structure.
The intelligent fool-proof electric screwdriver based on software definition according to claim 1, wherein the standard assembly information and the actual assembly information include screw model, product model and screwing process.
The intelligent fool-proof electric screwdriver based on software definition according to claim 1, wherein the drive system further includes a telescopic drive mechanism, the telescopic drive mechanism includes a telescopic drive device and a torque adjustment plate, and the telescopic The telescopic part of the driving device is connected with the torque regulating plate through the pull rods on both sides, the rotating driving device is installed on a fixed frame, and the fixed frame is movable between the telescopic driving device and the torque regulating plate Between the fixed frame and the torque adjustment plate, a spring is installed, and the telescopic drive device drives the torque adjustment plate to reciprocate back and forth through the pull rods on both sides, and the torque adjustment plate squeezes the spring to control The distance between the torque adjustment plate and the rotary driving device.
The intelligent fool-proof electric screwdriver based on software definition according to claim 1, wherein the housing is provided with a key for inputting a torque value to the first controller and a key for displaying the torque value LED display.
The intelligent fool-proof electric screwdriver based on software definition according to claim 1, wherein the camera and the second controller perform network transmission through the MQTT protocol.
The intelligent fool-proof electric screwdriver based on software definition according to claim 1, characterized in that, the rotary driving device and the first controller are connected through a CAN bus.
The intelligent fool-proof electric screwdriver based on software definition according to claim 1, wherein the first controller is an MCU controller.
The intelligent fool-proof electric screwdriver based on software definition according to claim 1, wherein the rotary driving device comprises a rotary motor and a reducer, and the reducer is connected to the power output end of the rotary motor, The rotating shaft is connected to the power output end of the reducer.