Automatic screw turning machine, control method and storage medium thereof

Abstract

The invention relates to the field of screw machining, in particular to an automatic screw turning machine, a control method and a storage medium thereof.The automatic screw turning machine comprises a bearing mechanism used for bearing an automobile switch shell and moving the automobile switch shell to a machining station; the screw turning mechanism is used for screwing a screw on the automobile switch shell on the bearing mechanism; the feeding mechanism is used for storing and feeding the screws; the conveying mechanism is used for driving the screw turning mechanism to move to the feeding mechanism to take the screws and driving the screw turning mechanism to move to the automobile switch shell on the bearing mechanism. The screw turning device has the effect of improving the screw turning efficiency.

Description

Technical Field

[0001] The present application relates to the field of screw processing, and in particular to an automatic screw tightening machine, a control method and a storage medium thereof. Background Art

[0002] In the processing of automobile switch housings, it is generally necessary to manufacture the automobile switch housings in two parts, and then connect the automobile switch housings together by screws or welding. For stability, multiple screws are often required to be installed. Workers need to find screw holes and then tighten the screws, which is inefficient. Summary of the invention

[0003] In order to improve the problem of low screw installation efficiency in automobile switch housings, the present application provides an automatic screw tightening machine, a control method and a storage medium thereof.

[0004] The present application provides an automatic screw tightening machine, which adopts the following technical solution: An automatic screw tightening machine, comprising: A carrying mechanism, used for carrying the automobile switch housing and moving it to a processing station; A screw tightening mechanism, used for tightening a screw on a vehicle switch housing on the supporting mechanism; A feeding mechanism, used for storing and feeding the screws; The transmission mechanism is used to drive the screw-tightening mechanism to move to the feeding mechanism to take screws, and drive the screw-tightening mechanism to move to the automobile switch housing on the supporting mechanism.

[0005] By adopting the above technical solution, workers only need to place the automobile switch housing on the supporting mechanism, and then the screw-tightening mechanism will automatically tighten the screws, and the feeding mechanism will automatically load the screws, and the transmission mechanism will drive the screw-tightening mechanism to automatically take the screws, which is convenient and fast, and greatly improves the processing efficiency.

[0006] Optionally, the feeding mechanism includes a feeding seat, a feeding turntable embedded and rotatably arranged on the feeding seat, and a feeding vibration box, the feeding turntable is provided with a plurality of clamping grooves for clamping screws, the feeding seat is provided with a feeding track, the feeding vibration box is used to store the screws and vibrate and feed them onto the feeding track, the feeding turntable rotates to connect the clamping grooves with the feeding track in turn, so that the screws enter the clamping grooves from the feeding track, and the feeding turntable rotates so that the side wall of the feeding seat blocks the opening of the clamping groove.

[0007] By adopting the above technical solution, the screws are loaded into the clamping groove through the loading track, and then the screws are turned out by rotating the loading turntable to facilitate the screw tightening mechanism to take them out. Workers only need to add the screws to the loading vibration box once, which is convenient and quick, and improves the loading efficiency.

[0008] Optionally, the screw-tightening mechanism includes an air pipe, an air pump and a drive assembly, a screwdriver for screwing screws is slidably arranged in the air pipe, the drive assembly is used to control the lifting and rotation of the screwdriver, and the air pump is used to control the air pipe to suck the screw into the screwdriver.

[0009] By adopting the above technical solution, automatic screw taking and screw tightening can be achieved, thereby improving the screw tightening efficiency.

[0010] Optional, including: A screw feeding detection module is arranged on the feeding seat, and is used to detect whether there is a screw in the clamping groove, obtain screw feeding data and output it; A screw taking detection module, which is arranged on the screwdriver or the air pipe and is used to detect the pressure on the screwdriver, obtain screwdriver pressure data and output it; An air pressure detection module is arranged in the trachea to detect the air flux between the trachea and the air pump to obtain inspiratory flow data; The data processing module receives the screw feeding data, the screwdriver pressure data and the air intake flow data, processes the data and outputs corresponding data signals for control or outputs them to the user for viewing.

[0011] By adopting the above technical solution, the working status is automatically detected, and then corresponding actions are taken, such as notifying workers or automatically correcting, to facilitate maintenance.

[0012] The present application provides a control method for an automatic screw-tightening machine, which adopts the following technical solution: A control method for an automatic screw-tightening machine, comprising: Obtain screw feeding data, screwdriver pressure data and suction data; Determine and output a screw feeding signal based on the screw feeding data and a preset screw feeding threshold; Determine the abnormal data through the screw feeding data, the screw feeding threshold and the screwdriver pressure data; The screw rotation access signal is determined and outputted by comparing the access abnormal data with a preset rotation correction threshold.

[0013] By adopting the above technical solution, it is automatically determined whether the screw is stuck, and the correction action is automatically performed to achieve automatic correction without the need for workers to perform manual correction, which is convenient and fast and improves efficiency.

[0014] Optionally, after the screw rotation access signal is determined by comparing the access abnormal data with a preset rotation correction threshold and outputted, the method further includes: Acquire the abnormal intake data again, and determine the abnormal intake data through the abnormal intake data and the screw rotation intake signal and output the abnormal intake data; The inspiratory flow data includes air pump flow data and tracheal flow data; Determine and output a tracheal leakage signal based on the abnormal inhalation data, the air pump flow data, the tracheal flow data and a preset flow threshold; The jet clearing signal is determined and outputted according to the tracheal leakage signal and the abnormal inhalation data.

[0015] By adopting the above technical solution, the cause of the trachea failure can be automatically determined and automatically cleaned, which is convenient, fast and efficient.

[0016] Optional, including: Acquire time data, wherein the screwdriver pressure data includes screwdriver head pressure data and screwdriver handle pressure data; Determine screw skew data by using a plurality of screwdriver head pressure data and a preset pressure threshold; Determine handle pressure variable data through the screwdriver handle pressure data and the time data; Determine and output a housing misalignment signal based on the tool handle pressure variable data and a preset installation skew threshold; Determine pressure change data by using the screw skew data, a plurality of screwdriver head pressure data and the time data; Determine the jet cleaning signal through the pressure change data and a preset chip threshold value and output it; A re-access signal is determined by the pressure change data and the chip threshold value and outputted.

[0017] By adopting the above technical solution, the cause of the skewed screw can be automatically determined, and the screw can be automatically cleaned or notified to the worker, thereby improving efficiency.

[0018] The present application provides a computer-readable storage medium, which adopts the following technical solution: A computer-readable storage medium stores a computer program that can be loaded by a processor and executes a control method for an automatic screw-tightening machine.

[0019] By adopting the above technical solution, the computer program is stored in a computer-readable storage medium.

[0020] In summary, the present application includes at least one of the following beneficial technical effects: 1. It realizes automatic loading, automatic taking and automatic tightening of screws, which is convenient and fast, greatly improving the processing efficiency.

[0021] 2. Automatically determine the cause of the fault and automatically correct it to improve efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an automatic screw tightening machine in Example 1 of the present application.

[0023] Figure 2 It is a structural diagram highlighting the feeding mechanism.

[0024] Figure 3 It is a structural schematic diagram highlighting the screw tightening mechanism.

[0025] Figure 4 This is a module schematic diagram of an automatic screw tightening machine in Example 2 of the present application.

[0026] Figure 5 It is a flow chart of a control method of an automatic screw tightening machine in Example 2 of the present application.

[0027] Figure 6 It is a flowchart of steps S2-S23.

[0028] Figure 7 It is a flowchart of steps S3-S36.

[0029] Explanation of the reference numerals in the accompanying drawings: 1. Carrying mechanism; 2. Screwing mechanism; 21. Air pipe; 22. Air pump; 23. Driving assembly; 231. Lifting driving member; 232. Rotating driving member; 24. Screwdriver; 3. Feeding mechanism; 31. Feeding seat; 32. Feeding turntable; 33. Feeding vibration box; 34. Clamping groove; 35. Feeding track; 4. Transmission mechanism; 5. Screw feeding detection module; 51. Screw taking detection module; 52. Air pressure detection module; 53. Data processing module. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-7 This application is described in further detail.

[0031] Embodiment 1 of the present application discloses an automatic screw tightening machine. Figure 1 The automatic screw tightening machine includes a carrying mechanism 1, a screw tightening mechanism 2, a feeding mechanism 3 and a transmission mechanism 4. The carrying mechanism 1 is used for workers to place the automobile switch housing on it. The carrying mechanism 1 carries the automobile switch housing and moves it to the processing station. The feeding mechanism 3 is used to store and load screws in batches. The screw tightening mechanism 2 takes the screws from the feeding mechanism 3, and then moves to the corresponding processing station through the transmission mechanism 4 to install and tighten the screws of the automobile switch housing placed on the carrying mechanism 1.

[0032] Reference Figure 2The feeding mechanism 3 includes a feeding seat 31, a feeding turntable 32 embedded and rotatable on the upper end surface of the feeding seat 31, and a feeding vibration box 33, that is, the feeding turntable 32 is embedded in the upper end surface of the feeding seat 31, so that the upper end surface of the feeding turntable 32 is flush with the upper end surface of the feeding seat 31 and rotates, and a feeding track 35 is opened on the feeding seat 31, and the feeding track 35 is a groove, and the feeding track 35 is connected to the discharge end of the feeding vibration box 33, and the discharge end of the feeding vibration box 33 transmits the screw discharge to the feeding track 35, and the subsequent screws continue to push the screws of the feeding track 35 forward, and the feeding track 35 points from the discharge end of the feeding vibration box 33 to the feeding turntable 32. Four clamping grooves 34 for clamping screws are provided on the edge of the outer ring of the loading turntable 32, and the four clamping grooves 34 are evenly distributed in the circumferential direction. The loading vibration box 33 is used to store the screws and vibrate and load them onto the loading track 35. The openings of the clamping grooves 34 are in contact with the inner wall of the loading seat 31 or are connected with the loading track 35. That is, the loading turntable 32 rotates to connect the clamping grooves 34 with the loading track 35 in turn, so that the screws enter the clamping grooves 34 from the loading track 35, and then the loading turntable 32 continues to rotate so that the side walls of the loading seat 31 block the openings of the clamping grooves 34.

[0033] Reference Figure 3 The screw-tightening mechanism 2 includes an air pipe 21, an air pump 22 and a driving assembly 23. The opening diameter of the air pipe 21 is larger than the opening diameter of the clamping groove 34 to fit the nut diameter of the screw. A screwdriver 24 for screwing the screw slides in the air pipe 21. The screwdriver 24 can be lifted, slid and rotated in the air pipe 21. The driving assembly 23 includes a lifting driving member 231 and a rotating driving member 232. The rotating driving member 232 is fixedly connected to the lifting shaft of the lifting driving member 231. The screwdriver 24 is fixedly connected to the rotating shaft of the rotating driving member 232. The driving assembly 23 is used to control the lifting and rotation of the screwdriver 24. The air pump 22 is used to control the air pipe 21 to suck the screw into the screwdriver 24.

[0034] Reference Figure 1 and Figure 2 and Figure 3 The transmission mechanism 4 includes a lifting component, a transverse component and a vertical component. The lifting component is used to control the lifting drive 231 to lift and lower. The transverse component is used to control the lifting component to move laterally, that is, to move in a direction away from or close to the loading seat 31, and at the same time to move in a direction close to or away from the track of the vertical component. The supporting mechanism 1 is on the track of the vertical component. The vertical component is used to control the displacement of the supporting mechanism 1. The displacement directions of the vertical component and the transverse component are perpendicular. In this embodiment, the displacement can be achieved by a cylinder or by a screw track.

[0035] The implementation principle of an automatic screw tightening machine in Example 1 of the present application is as follows: the feeding vibration box 33 vibrates the screws to feed them, and the screws enter the clamping groove 34 through the feeding track 35, and the feeding turntable 32 rotates the clamping groove 34 to the corresponding position, and the transmission mechanism 4 controls the screw tightening mechanism 2 to move to the clamping groove 34, and then the screws in the clamping groove 34 are sucked onto the screwdriver 24 in the air pipe 21 through the air pump 22, and then moved to the automobile switch housing on the supporting mechanism 1 on the vertical component through the transmission mechanism 4, the screwdriver 24 is lowered by the lifting drive member 231, and then the screws on the screwdriver 24 are tightened on the automobile switch housing by the rotating drive member 232.

[0036] Embodiment 2: Different from the first embodiment, the second embodiment of the present application discloses an automatic screw tightening machine. Figure 4 The automatic screw tightening machine includes a screw feeding detection module 5, a screw taking detection module 51, an air pressure detection module 52 and a data processing module 53. The screw feeding detection module 5 can use a photoelectric sensor or an infrared sensor, which is mainly aimed at the clamping groove 34 to determine whether there is a screw in the clamping groove 34 at the position where the screw tightening mechanism 2 takes the screw, and obtain the screw feeding data and output it.

[0037] Reference Figure 4 The screw taking detection module 51 can use a low-cost pressure sensor or a high-cost visual sensor. The pressure sensor is installed on the top of the nut on which the screwdriver 24 is used to insert the screw, such as the inner wall of the cross slot of the cross screwdriver, while the visual sensor is installed on the inner wall of the air pipe 21 to directly identify the state of the screw on the end of the screwdriver 24. The present application uses a pressure sensor to obtain the pressure of the nut on which the end of the screwdriver 24 is inserted into the screw, which is the screwdriver pressure data and output. There are at least two air pressure detection modules 52, one at the end where the air pipe 21 is connected to the air pump 22, to detect the air flow input by the air pump 22, and the other at a position near the outlet of the air pipe 21 to detect the suction force on the screw, obtain the suction flow data and output it.

[0038] Reference Figure 4 The data processing module 53 includes a database and a processor. The database is used to store various threshold data, such as screw feeding threshold, rotation correction threshold, flow threshold, access pressure threshold, installation skew threshold and other threshold data. The processor receives data signals such as screw feeding data, screwdriver pressure data and suction flow data, and after calling the corresponding threshold data from the database, calculates and outputs data signals such as screw rotation access signal and screw feeding signal.

[0039] The processor may include a central processing unit such as a CPU or MPU or a host system built around a CPU or MPU, including hardware or software. After the meter has a processor, people can freely control the metering instrument through programming to make it run according to people's wishes. The processor can control local measurement transmission, remote measurement transmission, remote communication, etc. through internal protocols. Internal protocols refer to all protocols that achieve mutual communication or links within the same metering instrument or the same system, including: human-computer interaction protocols, software / hardware (interface) protocols, chip bus (C-Bus) protocols, internal bus (I-Bus) protocols, etc. Part or all of the protocols. With the development of integrated circuit technology, some protocols that belong to the external bus (E-Bus) protocol are also classified as internal protocols after the external bus (E-Bus) is integrated into the chip.

[0040] Embodiment 2 of the present application discloses a control method for an automatic screw tightening machine. Figure 5 , the control method of the automatic screw tightening machine includes the following steps: S1, obtaining screw feeding data, screwdriver pressure data and suction data; S11, determining a screw feeding signal based on the screw feeding data and a preset screw feeding threshold and outputting the signal; S12, determining the abnormal data to be used based on the screw feeding data, the screw feeding threshold and the screwdriver pressure data; S13, determining the screw rotation access signal by using the abnormal data and the preset rotation correction threshold and outputting it.

[0041] In detail: let the screw feeding threshold be 1 for screws present at the feeding position and 0 for screws not present at the feeding position. For example, the photoelectric sensor transmitting end emits light. If it directly passes through the clamping slot 34 into the receiving end, it means that there is no obstruction in the clamping slot 34, that is, there is no screw. At this time, the receiving end is at a high level, that is, 1. If there is a screw in the clamping slot 34, the receiving end will not receive light, and it is 0 at this time. The screw feeding data is whether there is an obstruction in the clamping slot 34, so as to judge whether there is a screw in the clamping slot 34. This is the screw feeding signal. The screw feeding signal needs to be output to the worker. Or it is output to the database to form a work log; if the screw feeding data is combined with the screw feeding threshold to indicate that there is a screw, but the screwdriver pressure data is 0, that is, the screw has not been sucked up, then the abnormal access data indicating the abnormality is output. At this time, there may be two situations. One is that the suction force is abnormal and the screw cannot be sucked up, and the other is that the thread of the screw is stuck on the inner wall of the clamping groove 34 or the inner wall of the loading seat 31 by coincidence. At this time, you only need to turn the screw slightly. This is the rotation correction threshold, so the screw rotation access signal is output to control the screwdriver 24 to descend and turn the screw and then suck it up again to take the screw.

[0042] Reference Figure 6If the screw still does not come up after turning it, the following steps are also required: S2, obtaining the abnormal data again, and determining the abnormal data of inhalation through the abnormal data and the screw rotation acquisition signal, and outputting the data; S21, the inspiratory flow data includes the air pump flow data and the tracheal flow data; S22, determining and outputting a tracheal leakage signal based on the abnormal inhalation data, the air pump flow data, the tracheal flow data and a preset flow threshold; S23, determining the jet cleaning signal through the tracheal leakage signal and the abnormal inhalation data and outputting it.

[0043] In detail: after turning the screw in step S13, repeat steps S11-S12. If there is still a screw but it is not sucked up, it is determined that the suction force is abnormal, and go to step S2; the air pump flow data is the air flow of the air pump 22 sucking the air pipe 21, and the air pipe flow data is the air flow of the air pipe 21 sucking the screw, and the difference between the air pump flow data and the air pipe flow data is the difference between the air flow of the air pipe 21 opening sucking the screw and the air flow provided by the air pump 22. If the difference is too large, it means that the air pipe 21 is leaking. Whether the difference is too large is determined by the flow threshold. If the flow threshold is too large, it means that the air pipe 21 is leaking. If the value is 5%, it means that the difference is within the range of ±5% of the air pump flow data and is a normal measurement error. If it exceeds this range, that is, the air pipe flow data is lower than 95% of the air pump flow data, it indicates that there is a leak. At this time, an air pipe leakage signal indicating an air leak is output to the user for easy maintenance. If there is no leak, it means that the inner wall of the air pipe 21 is blocked. For example, iron filings and lubricating oil on the screws adhere to the inner wall of the air pipe 21 during long-term work, resulting in airflow blockage. Therefore, a jet cleaning signal is output to enable the air pump 22 to suddenly provide a large amount of air flow to flush away the adhering iron filings.

[0044] Reference Figure 7 , further comprising the following steps: S3, obtaining time data, the screwdriver pressure data includes screwdriver head pressure data and screwdriver handle pressure data; S31, determining screw skew data through a plurality of screwdriver head pressure data and a preset pressure threshold; S32, determining handle pressure variable data through screwdriver handle pressure data and time data; S33, determining and outputting a housing misalignment signal through the tool handle pressure variable data and a preset installation skew threshold; S34, determining pressure change data through screw skew data, multiple screwdriver head pressure data and time data; S35, determining an air jet cleaning signal based on the pressure change data and a preset chip threshold and outputting the signal; S36, determining a re-use signal based on the pressure change data and the chip threshold value and outputting the signal.

[0045] In detail: The screwdriver head pressure data is the pressure on the end of the screwdriver 24 that contacts the screw, and the screwdriver handle pressure data is the pressure on the handle of the screwdriver 24. There are at least two screwdriver handle pressure data, which are located on both sides of the handle of the screwdriver 24, mainly twisting force. There are multiple screwdriver head pressure data. For example, for a cross screw slot, there are at least four screwdriver head pressure data. Assuming the pressure threshold is 100±10N, it means that when all the screwdriver head pressure data are within this interval, it is normal. If there is a screwdriver head pressure data greater than this interval, and the corresponding screwdriver head pressure data is less than this interval, it means that the screw is skewed. Using the cross screw slot as an example, the pressure data of the four screwdriver heads are respectively from 1 to 4. The cross slot is named after the number. The cross slot is composed of two slots. No. 1 and No. 3 are at the two ends of the same slot. At this time, if the pressure data of the screwdriver head of No. 1 is 150N, which exceeds the range of 110N, and the pressure data of the screwdriver head of No. 3 is 700N, which is lower than the range of 90N, it means that the screw is skewed in the direction of the pressure data of the screwdriver head of No. 1. However, there are also many possibilities for skewness, such as skewed screw holes on the automotive switch housing or misaligned screw holes between two automotive switch housings, resulting in misalignment, or iron filings accumulated in the cross screw slot of the screwdriver head, resulting in the screw being unable to lie flat. If the screw is skewed, the data indicates that it is not skewed. In the process of screwing the screw into the automotive switch housing, the pressure data of the screwdriver handle is combined with the change of the time data. If the time data is 0s , the pressure data of the first screwdriver handle is 20N, the pressure data of the second screwdriver handle is 20N, and the time data is 0.1s. The pressure data of the first screwdriver handle is 20N, the pressure data of the second screwdriver handle is 20N, and the time data is 0.2s. The pressure data of the first screwdriver handle is 10N, and the pressure data of the second screwdriver handle is 30N. Thus, the pressure variable data of the first screwdriver handle is -100N / s, and the pressure variable data of the second screwdriver handle is 100N / s. Assuming the installation skew threshold is ±30N / s, the pressure variable data of the screwdriver handle at this time exceeds the range of the installation skew threshold, which means that the screw-in direction is tilted toward the position where the pressure data of the second screwdriver handle is located, thereby oppressing the screwdriver where the pressure data of the second screwdriver handle is located. 24. If the variable value is large and changes suddenly, it means that the switch housing of the previous car is skewed when it is screwed into the next car switch housing. The screw holes on the two car switch housings are not aligned, and the corresponding housing misalignment signal is output to the worker; if the screw skew data indicates that the screw is skewed, the previous data is pulled from the database. For example, if the skew occurs when the time data is 1s, the screwdriver head pressure data between 0.5-1s is pulled from the database. If the time data is 0.5s, the first screwdriver head pressure data is 5N, the second screwdriver head pressure data is 5N, the third screwdriver head pressure data is 5N, and the fourth screwdriver head pressure data is 5N. At this time, the force is uniform, indicating that the screw is sucked up without skew. If the time data is 0.6s, the first screwdriver head pressure data is 6N, the second screwdriver head pressure data is 5N, the third screwdriver head pressure data is 4N, and the fourth screwdriver head pressure data is 5N. At this time, the first pressure change data is 10N / s, and the third pressure change data is -10N / s. Assuming the chip accumulation threshold is ±10N / s, if the pressure change data exceeds this range, it means that the screwdriver 24 is skewed due to the accumulation of iron chips in the screw groove. At this time, the air jet signal is output to make the air pump 22 jet to clean the screwdriver 24, and then the re-use signal is output to re-control the lifting drive 231, the rotating drive 232 and the air pump 22 to absorb the screw again. .

[0046] Embodiment 2 of the present application discloses a computer-readable storage medium. The computer-readable storage medium stores a computer program that can be loaded by a processor and execute a control method for an automatic screw-tightening machine.

[0047] Computer-readable storage media include, for example, various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic screw tightening machine, characterized in that: include: A carrying mechanism (1), used for carrying the automobile switch housing and moving it to a processing station; A screw tightening mechanism (2) for tightening a screw on a vehicle switch housing on the supporting mechanism (1); A feeding mechanism (3), used for storing and feeding the screws; The transmission mechanism (4) is used to drive the screw tightening mechanism (2) to move to the feeding mechanism (3) to take screws, and to drive the screw tightening mechanism (2) to move to the automobile switch housing on the supporting mechanism (1).

2. The automatic screw tightening machine according to claim 1, characterized in that: The feeding mechanism (3) comprises a feeding seat (31), a feeding turntable (32) rotatably mounted on the feeding seat (31), and a feeding vibration box (33); the feeding turntable (32) is provided with a plurality of clamping grooves (34) for clamping screws; the feeding seat (31) is provided with a feeding track (35); the feeding vibration box (33) is used to store screws and vibrate and feed them onto the feeding track (35); the feeding turntable (32) rotates to connect the clamping grooves (34) with the feeding track (35) in turn, so that the screws enter the clamping grooves (34) from the feeding track (35); the feeding turntable (32) rotates to block the opening of the clamping groove (34) with the side wall of the feeding seat (31).

3. The automatic screw tightening machine according to claim 2, characterized in that: The screw-tightening mechanism (2) comprises an air pipe (21), an air pump (22) and a drive assembly (23); a screwdriver (24) for screwing a screw is slidably arranged in the air pipe (21); the drive assembly (23) is used to control the lifting and rotation of the screwdriver (24); and the air pump (22) is used to control the air pipe (21) to suck the screw onto the screwdriver (24).

4. The automatic screw tightening machine according to claim 3, characterized in that: include: A screw feeding detection module (5) is arranged on the feeding seat (31) and is used to detect whether a screw is present in the clamping groove (34), obtain screw feeding data and output it; A screw removal detection module (51), arranged on the screwdriver (24) or the air pipe (21), and used to detect the pressure applied to the screwdriver (24), obtain screwdriver pressure data, and output the data; An air pressure detection module (52) is arranged in the trachea (21) to detect the air flow rate between the trachea (21) and the air pump (22) to obtain inhalation flow rate data; The data processing module (53) receives the screw feeding data, the screwdriver pressure data and the air intake flow data, processes the data and outputs a corresponding data signal for control or outputs it to a user for viewing.

5. A control method for an automatic screw-tightening machine, using the automatic screw-tightening machine according to claim 4, characterized in that: include: Obtain screw feeding data, screwdriver pressure data and suction data; Determine and output a screw feeding signal based on the screw feeding data and a preset screw feeding threshold; Determine the abnormal data through the screw feeding data, the screw feeding threshold and the screwdriver pressure data; The screw rotation access signal is determined and outputted by comparing the access abnormal data with a preset rotation correction threshold.

6. The control method of an automatic screw-tightening machine according to claim 5, characterized in that: After the screw rotation access signal is determined and outputted by using the access abnormal data and the preset rotation correction threshold, the method further includes: Acquire the abnormal intake data again, and determine the abnormal intake data through the abnormal intake data and the screw rotation intake signal and output the abnormal intake data; The inspiratory flow data includes air pump flow data and tracheal flow data; Determine and output a tracheal leakage signal based on the abnormal inhalation data, the air pump flow data, the tracheal flow data and a preset flow threshold; The jet clearing signal is determined and outputted according to the tracheal leakage signal and the abnormal inhalation data.

7. The control method of an automatic screw-tightening machine according to claim 6, characterized in that: include: Acquire time data, wherein the screwdriver pressure data includes screwdriver head pressure data and screwdriver handle pressure data; Determine screw skew data by using a plurality of screwdriver head pressure data and a preset pressure threshold; Determine handle pressure variable data through the screwdriver handle pressure data and the time data; Determine and output a housing misalignment signal based on the tool handle pressure variable data and a preset installation skew threshold; Determine pressure change data by using the screw skew data, a plurality of screwdriver head pressure data and the time data; Determine the jet cleaning signal through the pressure change data and a preset chip threshold value and output it; A re-access signal is determined by the pressure change data and the chip threshold value and outputted.

8. A computer-readable storage medium, characterized in that: A computer program is stored which can be loaded by a processor and execute the control method of any one of claims 5 to 7 for an automatic screw-tightening machine.

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