Riveting tool integrated with stroke detection module and stroke detection method thereof

Abstract

The invention relates to a riveting tool integrated with a stroke detection module and a stroke detection method of the riveting tool, and relates to the technical field of electric tools, the riveting tool comprises a riveting tool body used for completing the riveting action of a rivet, and a controller module is arranged at the bottom of a holding assembly of the riveting tool body; the stroke detection module is arranged on the inner wall of the riveting tool body, electrically connected with the controller module and used for detecting and transmitting a magnetic field change signal of a synchronous magnetic strip arranged on the motor cylinder; the controller module is arranged at the bottom of the holding position of the riveting tool body and used for receiving and converting the magnetic field change signal into the displacement amount of the motor cylinder, correcting the pressing amount and / or the air supply amount in combination with a preset critical displacement threshold value and controlling on-off of the action execution module; movement of the motor cylinder is monitored in real time based on a magnetic field sensing and displacement conversion algorithm, precise control over an air path and a switch is achieved through multi-mode collaborative scheduling and correction calculation, and the automation precision and the collaborative efficiency of the riveting process are remarkably improved.

Description

Technical Field

[0001] This application relates to the field of power tool technology, and in particular to a riveting tool with an integrated stroke detection module and a stroke detection method thereof. Background Technology

[0002] A rivet gun, also known as a riveting tool, is a tool used in the manufacturing industry for fastening and riveting metal sheets, pipes, and other materials. It is widely used in product riveting across various industries. Currently, riveting tools can generally be divided into four types based on their power source: electric riveting tools, hydraulic riveting tools, pneumatic riveting tools, and manual riveting tools. Among these, electric riveting tools are widely used due to their fast and efficient riveting capabilities.

[0003] Since electric riveting tools typically use a stretching method to rivet products, they need to be used with special rivet connectors. Typically, the most commonly used type is the blind rivet.

[0004] Typically, electric riveting tools consist of a housing containing a gripping unit and a power unit. During operation, the gripping unit grips the shank of the pop rivet, and the power unit moves the gripping unit to break the shank, thus completing the riveting.

[0005] The riveting stroke usually relies on the operator to perceive changes in the motor sound by hearing and changes in the vibration frequency of the handle by touch, while also observing the extension and retraction displacement of the piston rod of the gun head based on experience. The trigger should be released immediately at the moment a "click" breaking sound is heard. If an abnormal riveting is encountered, a limit sleeve should be used for mechanical limiting or repeated inching operations should be performed to verify whether the rivet has reached the preset breakage position.

[0006] Existing patents disclose a displacement measurement device and method for a linear intelligent valve positioner. The device includes a control module, a detection module, and a motion module. A linear magnetic strip is located above the linear valve displacement module and is parallel to the screw. The detection module includes a magnetic conductor and a magnetic detection device, which remains fixed during operation. The control module controls the movement of the linear valve displacement module during operation. During the movement of the linear valve displacement module, the magnetic conductor in the detection module feeds back a magnetic signal to the control module. The control module receives and feeds back the magnetic detection signal to a host computer, which then determines the displacement of the linear intelligent valve positioner based on the magnetic detection signal. This invention provides an important detection component for the accuracy of valve position feedback in non-contact linear intelligent positioners, and its non-contact installation is convenient and highly reliable.

[0007] The existing technical solutions mentioned above have the following drawbacks: 1. The traditional riveting tool relies solely on the operator's experience to judge the position where the rivet breaks, which can no longer meet the stringent requirements of modern industry for assembly consistency. Especially on automated production lines, the piston stroke length at the moment the rivet breaks directly determines the forming quality and connection reliability of the riveting joint. Summary of the Invention

[0008] To address the shortcomings of existing technologies, the purpose of this application is to provide a riveting tool with an integrated stroke detection module and its stroke detection method. By integrating stroke sensing and stroke control algorithms, the displacement curve and termination position of the entire riveting process are accurately monitored, thereby effectively avoiding process defects such as weak riveting caused by insufficient stroke or thread damage caused by excessive stroke, and realizing digital control and quality traceability of the riveting process.

[0009] This is achieved through the following technical solutions: In a first aspect, this application provides a riveting tool with an integrated stroke detection module, comprising: The riveting tool body, used to complete the riveting action of rivets, includes a power module and an action execution module; the power module includes a motor cylinder; a synchronous magnetic strip is connected to the end of the power module away from the transmission module; The stroke detection module is located on the inner wall of the riveting tool body and is electrically connected to the controller module. The stroke detection module includes a synchronous magnetic strip and a displacement sensor, which is used to detect and transmit the magnetic field change signal of the synchronous magnetic strip located at one end of the power module through the displacement sensor. The controller module is located at the bottom of the grip position of the riveting tool body. It is used to receive and convert magnetic field change signals, generate motor cylinder displacement, and generate stroke stop signal in combination with preset critical displacement threshold to control the on and off of the action execution module. The action execution module includes an air supply unit and / or a switching unit.

[0010] By adopting the above technical solution, the displacement of the motor cylinder is monitored in real time through the stroke detection module, and the pressing and air delivery volume are corrected in a closed loop by combining pressure and flow data, thus realizing the automated and precise control of the riveting process and significantly improving the riveting quality and consistency.

[0011] This application further specifies that the riveting tool body also includes: The transmission module, with a fastener connected to one end and a power module connected to the other end, includes a drive shaft and a pneumatic motor. It is used to change the operating state of the pneumatic motor according to the stroke on / off signal; by changing the pressure in the control chamber through the pneumatic motor, the drive shaft is driven to make the fastener and the power module move synchronously. The switching unit is used to change the on / off state of the gas supply unit.

[0012] By adopting the above technical solution, the pneumatic drive and switch control structure are integrated through a split, detachable shell, which realizes efficient sliding of the gun head assembly and air circuit switching, significantly improving the convenience, maintainability and reliability of riveting operations.

[0013] This application is further configured such that: the output end of the motor cylinder is connected to a protective box, the stroke detection module is located in the inner cavity of the protective box, and the stroke detection module is connected to the protective box, and the inner cavity of the protective box is in communication with the inner cavity of the retaining shell.

[0014] By adopting the above technical solution and embedding the stroke detection module in the protective box, effective protection of the detection module is achieved, thereby improving the reliability, durability, and detection accuracy of the riveting process.

[0015] The present application is further configured such that: the controller module is located in the inner cavity of the protective cover and is connected to the protective cover; the protective cover includes at least two semi-protective housings and is detachably fixedly connected to adjacent semi-protective housings; the retaining housing includes a grip position and multiple mounting positions; the retaining housing includes two combined housings and is detachably fixedly connected to the two combined housings.

[0016] By adopting the above technical solution, and by embedding the controller in a detachable semi-shell protective cover, a balance between convenient disassembly and effective protection is achieved, significantly improving the maintainability of the controller and the reliability of the system.

[0017] Secondly, this application also provides a method for detecting the stroke of a riveting tool, employing the following technical solution: A stroke detection method for a riveting tool, applied to a riveting tool with an integrated stroke detection module, comprising: Initialize the stroke detection module and establish the movement limit reference of the motor cylinder according to the working status of the riveting tool; The stroke detection module detects the magnetic field generated by the synchronous magnetic strip that moves synchronously with the motor cylinder, and collects and transmits the magnetic field change signal to the controller module; The controller module cleans the magnetic field change signal and converts it into the displacement of the motor cylinder, and calculates the displacement change vector between adjacent time moments. The controller module generates a stroke stop signal based on a preset critical displacement threshold and the displacement change vector. The controller module sends a travel stop signal to the motion execution module to complete the riveting action of the rivet.

[0018] The operation flow of the controller module includes: Based on the preset component coordination mode, the stroke stop signal is allocated and controlled to construct the signal sequence to be implemented; Based on the movement limit reference and timestamp, sort the signal columns to be implemented and determine the signal transmission sequence. According to the component type and the signal transmission sequence, the staged transmission stop signal is sent to the ventilation volume detection module and the pressure detection module to calculate the pressing amount and the air delivery amount. Based on the pressing amount and / or air delivery amount combined with the preset global stroke threshold, the corresponding correction amount is calculated, and the component operation delay is calculated according to the component operating speed. The gas supply unit and the switching unit are controlled according to the component operation delay until the critical termination position is reached.

[0019] By adopting the above technical solution, the movement of the motor cylinder is monitored in real time based on magnetic field sensing and displacement conversion algorithm. Through multi-mode collaborative scheduling and correction calculation, the air circuit and switch are precisely controlled, which significantly improves the automation accuracy and collaborative efficiency of the riveting process.

[0020] A further provision of this application is: a stroke stop signal is allocated and controlled according to a preset component coordination mode, and a signal sequence to be implemented is constructed, including: The preset component collaboration mode is parsed to extract the number of collaborative components and the component communication protocol; The riveting tool is analyzed according to the component type to identify the air flow detection module and the pressure detection module, and to determine the signal action speed of the module. The stroke stop signal is divided into stages based on the number of components working together, forming a stage signal series; According to the component communication protocol, signals are distributed to the ventilation volume detection module and the pressure detection module in stages and signal sequences to obtain module feedback data. The module feedback data is time-sequentially arranged according to the module signal action speed to obtain the signal feedback timing sequence. The stage signal sequence is modified based on the signal feedback timing to construct the signal sequence to be implemented.

[0021] By adopting the above technical solution, based on the cooperative mode analysis and feedback speed matching algorithm, signals are dynamically allocated and timing is corrected to construct a highly efficient cooperative signal train to be implemented, which significantly improves the cooperative accuracy and response efficiency of multi-component control.

[0022] In summary, the beneficial technical effects of this application are as follows: Based on the cooperative mode analysis and feedback speed matching algorithm, signals are dynamically allocated and timing is corrected to construct a highly efficient cooperative signal sequence to be implemented, thereby improving the cooperative accuracy and response efficiency of multi-component control. Based on the real-time monitoring of the motor cylinder movement using magnetic field sensing and displacement conversion algorithms, the precise control of the air circuit and switches is achieved through multi-mode collaborative scheduling and correction calculation, thereby improving the automation accuracy and collaborative efficiency of the riveting process. By monitoring the motor cylinder displacement in real time through the stroke detection module, and combining pressure and flow data to correct the pressing and air delivery volume in a closed loop, the riveting process is automated and precise, improving the riveting quality and consistency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the riveting tool structure of the integrated stroke detection module in this application; Figure 2 This is a perspective view of the riveting tool used in this application when it is a rivet gun; Figure 3 This is a cross-sectional view of the riveting tool used in this application when it is a rivet gun; Figure 4 This is a flowchart illustrating the stroke detection method for riveting tools in this application; Explanation of reference numerals in the attached drawings: 1. Rivet gun body; 11. Retaining housing; 111. Combined housing; 12. Drive shaft; 13. Fastener; 14. Motor cylinder; 15. Cylinder; 16. Press switch; 17. Controller module; 21. Protective cover; 18. Stroke detection module; 181. Displacement sensor; 182. Synchronous magnetic strip; 19. Protective box. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings.

[0025] Reference Figure 1 The riveting tool disclosed in this application, which integrates a stroke detection module, includes: The riveting tool body, used to complete the riveting action of rivets, includes a power module and an action execution module; the power module includes a motor cylinder; a synchronous magnetic strip is connected to the end of the power module away from the transmission module; The stroke detection module is located on the inner wall of the riveting tool body and is electrically connected to the controller module. The stroke detection module includes a synchronous magnetic strip and a displacement sensor, which is used to detect and transmit the magnetic field change signal of the synchronous magnetic strip located at one end of the power module through the displacement sensor. The controller module is located at the bottom of the grip position of the riveting tool body. It is used to receive and convert magnetic field change signals, generate motor cylinder displacement, and generate stroke stop signal in combination with preset critical displacement threshold to control the on and off of the action execution module. The action execution module includes an air supply unit and / or a switching unit.

[0026] Reference Figure 2 and Figure 3 When the riveting tool in this application is a rivet gun, the rivet gun includes: The riveting tool body is the rivet gun body 1. The displacement sensor 181 of the stroke detection module 18 is set on the inner wall of the rivet gun body 1 and is electrically connected to the controller module 17. It is used to detect and transmit the magnetic field change signal of the synchronous magnetic strip 182 set at one end of the motor cylinder 14 (power module). The controller module 17 is located at the bottom of the grip position of the rivet gun body 1. It is used to receive and convert magnetic field change signals, generate motor cylinder displacement, and combine with preset critical displacement thresholds to correct the pressing amount and / or air delivery amount, and control the on / off of the action execution module. The action execution module includes a cylinder (air supply unit) 15 and / or a push switch (switching unit) 16.

[0027] In this embodiment, when the riveting tool body starts the riveting action, the stroke detection module set on the inner wall monitors the magnetic field change signal generated by the synchronous magnetic strip fixed at one end of the motor cylinder in real time, and transmits the signal to the controller module located at the bottom of the grip position. The controller module receives and analyzes the magnetic field signal, converts it into the actual displacement of the motor cylinder, and compares this displacement with the internally preset critical displacement threshold to dynamically determine whether the current riveting process is close to or has reached the preset position. If the displacement exceeds or is about to exceed the threshold, the controller module will correct the subsequent pressing amount and / or air supply amount in real time according to the deviation value, and adjust the execution intensity by controlling the on and off of the action execution module. The action execution module includes an air supply unit and a switch unit. The pressure detection module and air supply detection module built into the switch unit can provide real-time feedback on the gas flow and pressure in the air supply unit to form a closed-loop control. Finally, by precisely controlling the coordination of the air supply and the pressing action, the rivet is ensured to be accurately and stably riveted at the preset position, realizing automated and high-precision riveting quality control.

[0028] Preferably, the rivet gun body 1 further includes: The drive shaft 12 has a fastener (fastening module) 13 connected to one end and a motor cylinder 14 connected to the other end, and the fastener 13 and the motor cylinder 14 can slide relative to the retaining housing 11. The cylinder 15 extends into the retaining housing 11 through the air supply pipe 151 and is connected to one end of the control chamber of the drive shaft 12. The pressure in the control chamber is changed by the pneumatic motor, so that the fastener 13 and the motor cylinder 14 slide relative to the retaining housing 11. The push switch 16 is connected to the retaining housing 11 by a spring, and the push switch 16 is used to change the on / off state of the cylinder 15. A synchronous magnetic strip 19 is connected to the end of the motor cylinder 14 away from the drive shaft 12.

[0029] In this embodiment, when the operator presses the switch unit connected to the retaining housing via a spring, the on / off state of the cylinder changes, allowing compressed air from the pneumatic motor to enter or be blocked in the control chamber of the transmission module, thereby changing the gas pressure within the chamber. Driven by the pressure difference, the transmission module drives the fastener connected to one end and the motor cylinder connected to the other end to slide synchronously along the inner wall of the retaining housing, thus completing the riveting action. During this process, a synchronous magnetic strip is fixedly connected to the end of the motor cylinder away from the transmission module. The magnetic strip moves along with the motor cylinder and extends into a protective box that communicates with the inner cavity of the retaining housing. The stroke detection module inside the protective box can sense the magnetic field changes caused by the movement of the magnetic strip in real time, achieving non-contact and accurate monitoring of the displacement of the motor cylinder. The detachable retaining housing, composed of two combined housings, provides a stable mounting and gripping position for each component, and facilitates the maintenance and repair of the internal mechanism, ensuring the stable operation and precise control of the entire pneumatic-mechanical transmission system.

[0030] Preferably, the output end of the motor cylinder 14 is connected to a protective box 19, the stroke detection module 18 is located in the inner cavity of the protective box 19, and the stroke detection module 18 is connected to the protective box 19. The inner cavity of the protective box 19 is in communication with the inner cavity of the retaining shell 11. The controller module 17 is located in the inner cavity of the protective cover 21 and is connected to the protective cover 21; the protective cover 21 includes at least two semi-protective housings and is detachably fixedly connected to adjacent semi-protective housings; the retaining housing 11 includes a grip position and multiple mounting positions; the retaining housing 11 includes two combined housings 111 and is detachably fixedly connected to the two combined housings 111.

[0031] In this embodiment, the protective box fixed to the inner wall of the outer shell provides a stable mounting base for the travel detection module, enabling it to accurately sense the magnetic field changes caused by the movement of the synchronous magnetic strip. At the same time, the controller module is encapsulated in a protective cover composed of multiple detachable semi-protective shells, forming an independent protective cavity. This split protection design not only ensures that electronic components are protected from external impacts and dust interference, but also facilitates independent inspection and replacement of the module through the detachable structure, thereby ensuring the stable operation of magnetic field signal detection and command control.

[0032] Reference Figure 4 A stroke detection method for a riveting tool, applied to a riveting tool with an integrated stroke detection module, comprising: A: Initialize the stroke detection module 18 and establish the movement limit reference of the motor cylinder 14 according to the working status of the riveting tool; B: The stroke detection module 18 detects the magnetic field generated by the synchronous magnetic strip 19 that moves synchronously with the motor cylinder 14, and collects and transmits the magnetic field change signal to the controller module 17. C: After cleaning the magnetic field change signal, the controller module 17 converts it into the displacement of the motor cylinder and calculates the displacement change vector between adjacent time moments. D: The controller module 17 generates a stroke stop signal based on a preset critical displacement threshold and the displacement change vector; E: Controller module 17 sends a stroke stop signal to the action execution module to complete the riveting action of the rivet.

[0033] The operation flow of controller module 17 includes: S1: Allocate and control stroke stop signals according to the preset component coordination mode, and construct a signal sequence to be implemented; S2: Sort the signal columns to be implemented according to the movement limit reference and timestamp, and determine the signal transmission sequence; S3: Based on the component type and the signal transmission sequence, the stroke stop signal is transmitted in stages to the ventilation volume detection module and the pressure detection module to calculate the pressing amount and the air delivery amount; S4: Calculate the corresponding correction amount based on the pressing amount and / or air delivery amount combined with the preset global stroke threshold, and calculate the component operation delay according to the component operating speed; S5: Control the on / off state of the air supply unit 15 and the switching unit 16 according to the component operation delay until the critical termination position.

[0034] The implementation principle of this embodiment is as follows: When the riveting tool is performing rivet installation, the motor cylinder movement limit reference is first established according to the specifications of the rivet to be installed, and the stroke detection module is initialized. After the gun body is started, the stroke detection module captures the magnetic field change signal generated by the magnetic strip that moves synchronously with the motor cylinder in real time, and transmits it to the controller module for filtering and cleaning, accurately converting it into the displacement of the motor cylinder and generating a stroke displacement curve. The controller calculates the displacement change vector at adjacent moments to determine the movement direction of the motor cylinder in real time, ensuring that the riveting action is pushed forward. When the displacement reaches the preset critical displacement threshold, the system immediately generates a stroke stop signal and allocates and controls the signal as a signal to be implemented according to the component coordination mode. Then, the signal transmission sequence is sorted according to the timestamp, and the stop command is sent to the air volume detection module and the pressure detection module in stages to accurately calculate the current required pressing amount and air volume. Combined with the global stroke threshold, the system further calculates the correction amount and component operation delay, and finally controls the on and off of the air supply unit and the switch unit precisely according to this delay, so that the fastener stops at the critical termination position, ensuring that the rivet is installed smoothly and firmly in place.

[0035] During rivet removal, the movement limit reference is redefined and initialized according to the rivet removal requirements. Subsequently, the detection module continuously monitors the magnetic field changes of the magnetic strip during the retraction of the motor cylinder, and transmits the signal to the controller, which converts it into a displacement curve reflecting the withdrawal process. By analyzing the displacement change vector, the direction of movement of the motor cylinder is determined to be retraction. When the displacement reaches the preset disassembly critical threshold, a stop signal is generated to avoid excessive withdrawal and damage to the workpiece. This signal is processed by the collaborative mode to form a signal series, which is sorted in time sequence and transmitted to the detection module in stages to calculate the pressing and air supply parameters required to maintain smooth disassembly. Combining the global threshold and component speed, the correction amount and delay are calculated. Finally, by controlling the on / off of the air supply unit and the switching unit, the motor cylinder is precisely stopped at the critical position where the rivet is completely loosened, completing the non-destructive disassembly.

[0036] Preferably, step S1 includes: The preset component collaboration modes are parsed to extract the number of collaborative components and the component communication protocol. The component collaboration modes include timing collaboration mode, master-slave collaboration mode, parallel collaboration mode, feedback collaboration mode, coupled collaboration mode, and trigger collaboration mode. In this embodiment, the timing coordination mode controls the actions of each component according to a preset time sequence. For example, the ventilation volume detection module is started first to collect data, and the pressure detection module is triggered after a certain delay, so as to ensure that the order of signal acquisition matches the physical process.

[0037] In the master-slave collaborative mode, one component acts as the main control core, and other components adjust according to its state. For example, the position signal of the switch unit is the main control signal, and the opening degree of the air supply unit is adjusted in real time according to the pressing depth to maintain the match between pressure and flow.

[0038] In parallel collaborative mode, multiple components execute tasks simultaneously without waiting for each other, but achieve overall control through data fusion. For example, the ventilation volume detection module and the pressure detection module collect data simultaneously, and the system calculates the correction amount by combining the feedback from both.

[0039] The feedback coordination mode dynamically adjusts the output of the actuators based on real-time feedback from the detection module. For example, the opening degree of the air supply unit or the stroke speed of the switching unit can be corrected in real time based on the pressure value returned by the pressure detection module.

[0040] The trigger-coordination mode activates other components when a certain component reaches a preset threshold. For example, if the press amount exceeds the global stroke threshold, the air supply unit is immediately shut off to prevent overshoot.

[0041] The coupled and coordinated mode combines stroke position and pressure feedback for linkage control. For example, when the pressure approaches the critical termination position, the air volume is gradually reduced to achieve a soft landing.

[0042] The riveting tool is analyzed according to the component type to identify the air flow detection module and the pressure detection module, and to determine the signal action speed of the module. The stroke stop signal is divided into stages based on the number of components working together, forming a stage signal series; According to the component communication protocol, signals are distributed to the ventilation volume detection module and the pressure detection module in stages and signal sequences to obtain module feedback data. The module feedback data is time-sequentially arranged according to the module signal action speed to obtain the signal feedback timing sequence. The stage signal sequence is modified based on the signal feedback timing to construct the signal sequence to be implemented.

[0043] In this embodiment, when the riveting tool is installing rivets, the preset component coordination mode is first analyzed to extract the number of components participating in the coordination control and the corresponding component communication protocols. In installation scenarios, a combination of timing-based coordination mode and master-slave coordination mode is typically used to ensure that the ventilation volume detection module and pressure detection module respond in a predetermined order. Subsequently, based on the component type of the riveting tool, the ventilation volume detection module and pressure detection module are accurately identified, and their respective signal action speeds are measured, laying the foundation for subsequent timing control. Based on the number of coordinating components, the generated stroke stop signals are processed in stages according to key nodes in the installation process. The system is divided into ordered phase signal sequences. Following the analyzed component communication protocol, each phase signal is sequentially distributed to the ventilation volume detection module and pressure detection module, and the flow and pressure data from these modules are acquired in real time. Next, based on the pre-determined signal action speed of each module, the collected module feedback data is time-sequentially arranged to obtain a precise signal feedback timing sequence. Finally, the initial phase signal sequence is dynamically corrected based on this feedback timing sequence to construct a signal sequence to be implemented that highly matches the actual installation process. This ensures that when the rivet is pulled to the preset position, the ventilation volume and pressing volume are precisely controlled, achieving a stable installation of the rivet.

[0044] When riveting tools are used for rivet removal, the preset component coordination mode for the disassembly scenario is first analyzed. This typically involves using feedback and trigger coordination modes to handle potential jamming or other anomalies during disassembly. The number of components involved in the coordination and their corresponding communication protocols are extracted. Subsequently, based on disassembly requirements, the current status of the ventilation volume detection module and pressure detection module is re-identified, and their signal action speed under retraction conditions is measured to ensure control accuracy. According to the required precision of the disassembly process, the stroke stop signal used to control the motor cylinder retraction is divided into stages according to displacement intervals, forming... A phased signal sequence adapted to the disassembly characteristics is established. Following the analyzed communication protocol, these phased signals are distributed systematically to each detection module, and the current air pressure and piston position data fed back by the modules are acquired in real time. Based on the signal action speed of each module under disassembly conditions, the feedback data is time-sequentially arranged to generate a signal feedback timing sequence reflecting the actual withdrawal process. Finally, this feedback timing sequence is used to correct the phased signal sequence in real time, constructing a signal sequence to be implemented that can dynamically adapt to the rivet loosening process. This ensures that at the critical position where the rivet is completely withdrawn without damaging the workpiece, the air supply unit and the switching unit are precisely cut off, completing non-destructive disassembly.

[0045] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A riveting tool with an integrated stroke detection module, characterized in that, include: The riveting tool body, used to complete the riveting action of rivets, includes a motor cylinder, an action execution module, a controller module, and a stroke detection module; The stroke detection module is located on the inner wall of the riveting tool body and is electrically connected to the controller module. It includes a synchronous magnetic strip and a displacement sensor, and is used to detect and transmit the magnetic field change signal of the synchronous magnetic strip located at one end of the motor cylinder through the displacement sensor. The controller module is located at the bottom of the grip position of the riveting tool body. It is used to receive and convert the magnetic field change signal, generate the motor cylinder displacement, and generate a stroke stop signal in combination with a preset critical displacement threshold to control the on / off state of the action execution module. The action execution module includes an air supply unit and / or a switching unit.

2. The riveting tool with an integrated stroke detection module according to claim 1, characterized in that, The riveting tool body also includes: The transmission module has a fastener connected to its signal output end and a power module connected to its signal input end. It includes a drive shaft and a pneumatic motor, and is used to change the operating state of the pneumatic motor according to the stroke stop signal. The pneumatic motor changes the pressure in the control chamber, which drives the drive shaft to move the fastener and the motor cylinder synchronously. A synchronous magnetic strip is connected to the end of the motor cylinder furthest from the transmission module; The switching unit is used to change the on / off state of the gas supply unit.

3. A stroke detection method for a riveting tool, applied to the riveting tool with the integrated stroke detection module as described in any one of claims 1 to 2, characterized in that, include: Initialize the stroke detection module and establish the movement limit reference of the power module according to the working status of the riveting tool; The stroke detection module detects the magnetic field generated by the synchronous magnetic strip that moves synchronously with the power module, and collects and transmits the magnetic field change signal to the controller module; The controller module cleans the magnetic field change signal and converts it into the displacement of the motor cylinder, and calculates the displacement change vector at adjacent time points. The controller module generates a stroke stop signal based on a preset critical displacement threshold and the displacement change vector. The controller module distributes the travel stop signal to the action execution module to complete the riveting action of the rivet.

4. The stroke detection method for riveting tools according to claim 3, characterized in that, The operation flow of the controller module includes: Based on the preset component coordination mode, the stroke stop signal is allocated and controlled to construct the signal sequence to be implemented; The signal transmission sequence is determined by sorting the signal columns to be implemented based on the movement limit reference and timestamp. According to the component type and the signal transmission sequence, the stroke stop signal is transmitted in stages to the ventilation volume detection module and the pressure detection module to calculate the pressing amount and the air delivery amount. Based on the pressing amount and / or air delivery amount combined with a preset global stroke threshold, the corresponding correction amount is calculated, and the component running delay is calculated according to the component running speed. The gas supply unit and the switching unit are controlled by the operating delay of the components until the critical termination position is reached.

5. The stroke detection method for riveting tools according to claim 4, characterized in that, The process of allocating and controlling stroke stop signals according to a preset component coordination mode, and constructing a signal sequence to be implemented, includes: The preset component collaboration mode is parsed to extract the number of collaborative components and the component communication protocol; The riveting tool is analyzed according to the component type to identify the air flow detection module and the pressure detection module, and to determine the signal action speed of the module. The stroke stop signal is divided into stages based on the number of components working together, forming a stage signal series; According to the component communication protocol and the stage signal sequence, the ventilation volume detection module and the pressure detection module are signaled to obtain module feedback data. The feedback data of the module is time-sequenced according to the signal action speed of the module to obtain the signal feedback timing sequence. The stage signal sequence is modified according to the signal feedback timing to construct the signal sequence to be implemented.

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