A double-ring group intelligent follow-up auxiliary support clamp for large-blade milling machining and a control method thereof

Abstract

This invention discloses a dual-ring intelligent follow-up auxiliary support fixture for milling thin-walled large turbine blades, belonging to the field of thin-walled large blade machining technology. It includes a dual-ring follow-up auxiliary fixture body, a fixture support device, a control unit, and a PWM speed control unit. The invention employs a dual-ring follow-up structure, with the rotating mechanism consisting of a rotating inner ring, a moving outer ring, and connecting bearings. The inner ring has a grooved structure and an intelligent flexible support column for circumferential positioning. The outer ring and the machining tool follow each other, adapting to the rotational motion of the complex blade surface. Through vibration and force dual-signal feedback and a coordinated PWM module, based on preset fuzzy rules, it dynamically outputs electromagnet current, support leg damping coefficient, and stepper motor adjustment commands. Based on a fuzzy adaptive control algorithm, it achieves follow-up control of the dual-ring auxiliary support fixture and the tool, effectively improving the machining stability of thin-walled large turbine blades, mitigating machining deformation and milling vibration problems, and enhancing machining quality and efficiency.

Description

Technical Field

[0001] This invention belongs to the field of machining technology, specifically relating to a double-ring intelligent follow-up auxiliary support fixture device for milling large blades and its fuzzy adaptive control method, which is suitable for vibration suppression and machining accuracy improvement of thin-walled large blades. Background Technology

[0002] With the development of aerospace and precision equipment manufacturing technologies, the application of irregularly shaped structural parts with complex spatial geometry is becoming increasingly widespread. Among them, the machining of thin-walled large blades presents the following technical challenges: First, due to the non-uniform distribution of the workpiece's stiffness along the axial direction, traditional fixed fixtures are unable to provide effective support throughout the machining process, leading to vibration induced by the cutting tool. Second, the workpiece has multiple large spatial rotation angles in its torsional and straight sections, making it easy for conventional clamping methods to produce positioning deviations. Third, the cutting force application point changes dynamically during the milling cutter feed process, and static fixtures cannot adjust their support positions to follow the tool position, causing local deformation of the workpiece. Fourth, the longer the blade, the weaker the vibration suppression effect of traditional clamping methods and fixtures during blade machining, especially in the machining of the waist of large blades, where accuracy often varies significantly.

[0003] While existing solutions employing accompanying fixtures or flexible supports exist to address the aforementioned issues, these solutions generally suffer from drawbacks such as complex structures, simplistic control logic, and a lack of online vibration detection and active suppression capabilities. In particular, they lack comprehensive solutions with rapid response, adaptive adjustment of rotational attitude, and dynamic decision-making during the machining process. Therefore, there is an urgent need to develop a remotely controllable mobile auxiliary fixture system with intelligent judgment capabilities to solve the challenges of vibration suppression and ensuring dimensional and positional accuracy in the machining of large blades. Summary of the Invention

[0004] The purpose of this invention is to provide a dual-ring intelligent follow-up auxiliary support fixture device and its fuzzy adaptive control method for milling large blades, so as to solve the technical problems of large vibration, low positioning accuracy and lack of active vibration suppression in the machining of the middle part of large blades in the prior art. It adopts multi-sensor fusion analysis and multi-point joint control to assist traditional fixtures, improve the machining effect of thin-walled large blades, and provide a certain reference for improving the surface accuracy and industrial quality of such industrial products.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A movable auxiliary fixture device for turning large blades is characterized in that the auxiliary fixture comprises three parts: a fixture body, a fixture support device, and an intelligent control device; wherein the fixture support device includes: a movable support rail, a transverse stabilizing rod, a longitudinal stabilizing rod, support legs, and a locking nut; the fixture body includes: an outer movable outer ring, an inner rotating inner ring, a transverse movable wheel assembly, an intelligent flexible radial support column within the double-ring auxiliary fixture, and a deep groove ball bearing; the intelligent control device includes: control software, a Bluetooth vibration sensor, a force sensor, an infrared distance monitor, and a drive assembly; the movable support rail has a 60° V-shaped track, and the transverse movable wheel assembly consists of a pair of polyurethane-coated V-shaped wheels symmetrically installed on the inner side of the outer movable outer ring, each V-shaped wheel having a rated load capacity ≥50kg, precisely fitting with the V-shaped track of the movable support rail; the outer movable outer ring is mounted on the movable support rail via this assembly, and its transverse movement is driven by a stepper motor, which is connected to a V-shaped track on one side via a reduction gearbox. The shaft end of the molded wheel is directly connected, and the zero point is detected and confirmed by a limit switch.

[0007] Furthermore, the inner rotating inner ring has grooves on its surface for mounting deep groove ball bearings to achieve rotation. The outer moving outer ring is mounted in the inner mounting cavity of the outer moving outer ring via deep groove ball bearings, and a double-layer sealing structure of dustproof ring and rubber O-ring is provided between the two. The rotating mechanism can ensure smooth clamping and free rotation with the large blade during the processing of the large blade.

[0008] Furthermore, the four sets of radial telescopic support columns are pre-embedded in the radial countersunk mounting cavity at a certain angle along the inner ring circumference of the inner layer. Each set of support columns consists of push-pull electromagnets numbered DT1~DT4, a reset spring, a bushing, an acceleration sensor, and a flexible head. A damping buffer sleeve is fitted in the middle section of the arm body to stably control the telescopic speed at a low speed. The electromagnet extends when energized and retracts when de-energized, and the fixed clamping force is achieved by mechanical limiting.

[0009] Furthermore, the infrared distance monitor is fixed to the front end face of the outer moving ring via an L-shaped bracket, with the detection probe facing the direction of the milling cutter's movement trajectory, and the signal output terminal connected to the intelligent control system; the intelligent control system is used to realize the control functions, including the device self-test after the system is powered on (detecting the on / off response of the electromagnet, the running status of the drive motor, the stability of the infrared module signal, collecting acceleration sensor data, lateral movement positioning control, support column extension and retraction control, and tool following are all controlled by the intelligent control system).

[0010] Furthermore, an infrared distance detection module, designated JC1, is installed on the outer wall of the outer moving ring along the direction the milling cutter approaches. This module is fixed to the front end of the outer moving ring via an L-shaped bracket, with the detection probe facing the direction of the milling cutter's movement trajectory, transmitting distance signals to the main body of the intelligent control device in real time. The intelligent control device operates by combining the distance information from the two auxiliary fixtures with two pre-stored distance thresholds in the main control unit. The first level is a warning threshold (e.g., distance ≤ 8cm), and the second level is a follow-trigger threshold (e.g., distance ≤ 3cm). When the detected distance reaches the warning threshold, the main control unit triggers an audible and visual alarm, alerting the operator with a sound and flashing warning light. If the distance continues to drop to the follow-trigger threshold without any operator input, the system automatically initiates a coordinated action: sending signals to electromagnets DT1~DT4 to reduce the clamping force (not completely releasing it, maintaining basic clamping to secure the workpiece). Subsequently, the moving outer ring drives the entire fixture to move 5~10cm along the moving support rail towards the milling cutter. Once in position, the system immediately controls the electromagnets to restore the initial clamping force, completing the follow-trigger clamping action.

[0011] Furthermore, an electromagnet is installed at the bottom of the support leg, which, when energized, attracts to the workbench to fix the moving support rail; the support leg is configured from bottom to top as a bottom magnetic attraction section, a lower electromagnetic rheodynamic damping section (252), a lower connecting section (253), an upper electromagnetic rheodynamic damping section (254), an upper connecting section (255), and a top circular mounting position. The bottom magnetic attraction section (251) has a built-in electromagnet, which, when energized, can attract to the workbench to fix the position of the support leg. A matching hole for horizontal and vertical stabilizing rods is reserved above the electromagnet. The stabilizing rods can be fixed to the bottom of the support leg by locking nuts, thus adapting to usage scenarios where the workbench cannot be magnetically attracted; the lower electromagnetic rheodynamic damping section (254) and the upper connecting section (255) are arranged in sequence. Both the damping section (252) and the upper electromagnetic rheological damping section (254) are divided into four independent chambers by a cross-shaped partition. Each chamber is filled with a mixture of electromagnetic rheological fluid and metal damping particles. A micro-damping hole is also provided at the bottom of the chamber. An excitation coil is embedded in the chamber wall. The viscosity of the electromagnetic rheological fluid can be changed by adjusting the excitation current, thereby realizing the dynamic adjustment of the damping coefficient of the support foot. The lower connecting section (253) and the upper connecting section (255) are both integrated threaded plug structures. They are rigidly connected to the lower electromagnetic rheological damping section (252) and the upper electromagnetic rheological damping section (254) respectively through fine threads. Both end faces and thread roots are provided with double O-type threads. The ring can achieve independent sealing of the two damping cavities, effectively preventing the medium from flowing between cavities; a vibration sensor (256) is embedded in the mounting position of the top ring. This sensor is used to detect the vibration amplitude and frequency of the moving support rail mounted on the top ring in real time. At the same time, an oil injection port is provided on the side wall of the top ring. The oil injection port is connected to the lower and upper electromagnetic rheological damping cavities through the internal flow channel. The medium can be replenished without disassembling the parts. The telescopic joint of the support leg is also equipped with a dynamic sealing structure to prevent medium leakage and particle overflow. The movable auxiliary clamp support device adopts four identical support legs arranged in a rectangular layout. The four support legs jointly support the movable support rail and the auxiliary clamp. Vibration sensors (256) are embedded in the top circular mounting positions of the four support legs. Each vibration sensor (256) can collect local vibration data of the movable support rail in real time and transmit the data to the intelligent control center. Based on the multi-source vibration feedback data, the intelligent control center dynamically adjusts the excitation current of the lower electromagnetic rheodynamic damping section (252) and upper electromagnetic rheodynamic damping section (254) of each support leg through a distributed collaborative control algorithm. It can independently adjust the damping coefficient of each support leg to achieve precise matching of the damping force of multiple support legs. When an abnormal local vibration amplitude is detected in the movable support rail, the intelligent control center will prioritize adjusting the damping coefficient of the support leg in the corresponding area and simultaneously adjust the damping output of adjacent support legs. By dispersing the shock absorption load, the impact of the support legs on the bottom magnetic fixing surface is reduced, effectively preventing magnetic fixing failure, thereby significantly improving the overall stability and vibration resistance of the support device.

[0012] Furthermore, a positioning control method for a movable auxiliary fixture device used in large blade turning is characterized by comprising the following steps:

[0013] S1. The two sets of support legs are locked to the worktable by powering on them respectively, and the two sets of support legs are connected and fixed by a stabilizing rod. After the fixation is completed, the movable support rail is mounted to fix one end of the blade to be processed. Then, the two sets of double-ring auxiliary fixtures are mounted and positioned on the movable support rail respectively, and are arranged on the left and right sides of the subsequent tool. Then, the other end of the blade is fixed to realize the mounting and positioning of the whole device and a set of double-sided auxiliary fixtures.

[0014] S2. After the system is powered on, it performs a safety self-test, which tests the on / off response of electromagnets DT1 to DT8 (4 in each group) of a set of fixtures, the running status of two sets of horizontal movement stepper motors, and the signal stability of two JC1 infrared distance detection modules (1 on each side). If any component of any fixture is detected abnormally, an audible and visual alarm is immediately triggered and the system is locked, waiting for manual reset and troubleshooting.

[0015] S3. After passing the safety self-check, wait for the operator to send instructions to control the outer moving rings of the two sets of auxiliary fixtures to move synchronously along the V-shaped track of the moving support to the corresponding position of the workpiece torsion section (separately placed on the left and right sides of the tool); then send energizing signals to electromagnets DT1 to DT8 synchronously, and all eight sets of support columns extend at a uniform speed of 5mm / s. The preset extension stroke is controlled by the mechanical limit structure. Relying on the matching of the rated thrust of the electromagnet and the elastic force of the reset spring, the double-sided coordinated light clamping action is realized.

[0016] S4. Start the main machining program. The system simultaneously starts two JC1 infrared distance detection modules to monitor the initial distance between the left and right clamps and the milling cutter in real time (the initial distance must be ≥20cm). After completing the pre-machining preparation, the machine tool is manually started for cutting. During machining, the intelligent control center, as the core control unit, receives data collected by the built-in wireless vibration sensors of the two clamps in real time, and simultaneously monitors the clamping force of the eight telescopic arms. Based on the vibration data, it dynamically fine-tunes the force of the corresponding support column of each clamp, achieving precise vibration suppression through the coordination of eight points on both sides. At the same time, it integrates the distance data of the two infrared modules to intelligently adjust the relative position of the two clamps, ensuring the balance of the auxiliary support on both sides and the stability of machining.

[0017] S5. During the machining process, two infrared distance detection modules continuously and synchronously monitor the distance between the corresponding side fixture and the milling cutter: when the distance on either side is ≤8cm, the system triggers an audible and visual warning to remind the operator to pay attention; if the distance on that side continues to drop to ≤3cm and no manual operation command is received, the intelligent control center will coordinate and control the two sets of fixtures to move synchronously and start the following clamping program—first, send a signal to the corresponding side electromagnets DT1~DT4 to weaken the clamping force (not completely released, maintaining basic clamping and fixing of the workpiece), and synchronously drive the two sets of fixtures to finely adjust their positions along the moving support rail in the matching direction (the side closer to the milling cutter moves 5~10cm, and the other side is simultaneously finely adjusted to maintain balance). After reaching the position, the initial clamping force of all support columns is immediately restored to ensure machining continuity and the stability of the double-sided support.

[0018] S6. After processing is completed, a power-off signal is sent synchronously to electromagnets DT1 to DT8. The eight sets of support columns retract at a constant speed under the action of the reset spring. The two sets of horizontal stepper motors drive the corresponding circular clamps to return to the zero point. The zero point is accurately detected by the limit switch. After both sets of clamps are reset, the system sends a processing completion signal and enters the standby state.

[0019] Furthermore, the movable large blade machining auxiliary fixture is characterized by its modular, layered structural design. The core consists of a movable support rail, inner and outer double-layered rings, radial clamping components, and an intelligent control module. Each structural unit achieves coordinated action through precision transmission pairs and signal interfaces. Its structural innovation lies in its multi-dimensional adaptation to the specialized design for large blade machining.

[0020] Preferably, the top surface of the movable support rail is directly milled into a 60° V-shaped rail, and small DC electromagnetic chucks are installed on both sides of the beam. The connection between the double-ring auxiliary clamp body and the bottom clamp support device and the movement and positioning of the double-ring clamp body are completed through the support legs.

[0021] Preferably, the double-layer ring clamp is the core adapting structure of the clamp, comprising an outer movable outer ring and an inner rotating inner ring. The outer movable outer ring is mounted on the V-shaped track of the movable support rail via V-shaped wheel assemblies symmetrically assembled on both sides, and is driven by a stepper motor. The motor is directly connected to the shaft end of one V-shaped wheel via a reduction gearbox, enabling precise axial movement of the device along the movable support rail. The inner rotating inner ring is mounted on the outer movable outer ring at a surface groove via a lightweight deep groove ball bearing, achieving 0-360° rotation. The double-ring structure, through axial-circumferential two-dimensional linkage, adapts to the spatial angle changes of the torsional section generatrix of large blades (such as thin-walled aerospace blades), solving the positioning problem of traditional clamps being unable to match the complex curved surface generatrix of large blades.

[0022] Preferably, the four sets of radial telescopic support columns are symmetrically distributed circumferentially along the inner rotating ring of the invention, and are pre-embedded in radial countersunk mounting cavities. The depth of the mounting cavity is adapted to the retracted length of the support columns to prevent protrusion from the inner wall and avoid interference during workpiece clamping and rotation. The four sets of symmetrical layout can achieve multi-point uniform force distribution, avoid uneven load deformation of the workpiece waist, and improve clamping stability, providing precise support for waist processing. Each set of mounting cavities is equipped with a common gap guide bushing and a rubber damping sleeve. The damping sleeve wraps around the arm body to achieve extension / retraction speed limiting. The rubber gasket at the end of the mounting cavity works with a reset spring to buffer the retraction impact and prevent damage. The support columns are driven by DT1~DT4 type push-pull electromagnets (DC24V, stroke 20mm, thrust 50N). The electromagnets are pre-embedded in the fixed seat at the end of the mounting cavity. The push rod end is connected to the tail of the arm body through an elastic pad with an anti-loosening cotter pin to compensate for slight differences in workpiece dimensions and vibration. Equipped with a low-cost PWM speed control module, four sets of parallel drives ensure consistent action; a reset spring is connected to the tail of the support column (preload matches the electromagnetic thrust), a travel proximity switch is installed in the middle section of the pole, a miniature force sensor is embedded in the middle section of the pole, and a Bluetooth vibration sensor is embedded in the flexible clamping head at the end. Both share a single BLE Bluetooth module, independently powered by a lithium-ion battery (battery life ≥2 years), forming a "force-vibration" dual feedback system. The detection signal is transmitted to the computer control system through the BLE module, completely avoiding the problem of rotational wiring. During extension, the PWM module adjusts the current to ensure smooth extension of the arm, the rubber damping sleeve limits speed and prevents impact, and the mechanical limit block controls the stroke to indirectly control the force, achieving light clamping and preventing deformation. During operation, dual sensors collect vibration data and clamping force data of the blade waist processing in real time and transmit them synchronously to the computer control system. The system adopts a dual-input fuzzy adaptive control algorithm, using dual feedback data as input to link the PWM module to precisely fine-tune the corresponding electromagnet current, dynamically and differentially adjust the clamping force, suppress vibration and improve waist processing stability. When retracting, the electromagnet is de-energized, the reset spring pulls the arm body back, the rubber pad buffers the impact until the stroke proximity switch feedback resets to the correct position, and the arm body returns to the pre-embedded state.

[0023] The double-ring clamping device of this invention is characterized by: the movable support rail providing stable support and a moving base, its integrated milled V-shaped rail combined with the electromagnetic chuck quick-locking structure of the clamping support device, which simplifies the clamping process and ensures positioning accuracy; the double-layer circular clamping body composed of the outer movable outer ring and the inner rotating inner ring, driven by a stepper motor to achieve axial movement and connected by bearings to achieve circumferential rotation, realizing axial-circumferential two-dimensional precise adaptation of the generatrix of the large blade torsion section; the radial telescopic clamping assembly driven by four sets of electromagnets, combined with a damping buffer sleeve and a flexible head, achieves flexible clamping with uniform telescopic movement and stable clamping force, avoiding clamping deformation and rigid impact of thin-walled large blades. The synergistic effect of structural rigidity and flexible clamping effectively suppresses processing vibration, thereby improving the processing quality and surface accuracy of thin-walled large blades.

[0024] A positioning and clamping control method for a movable auxiliary fixture device used in turning large blades includes the following steps:

[0025] S1. The two sets of support legs are locked to the worktable by powering on them respectively, and the two sets of support legs are connected and fixed by a stabilizing rod. After the fixation is completed, the movable support rail is mounted to fix one end of the blade to be processed. Then, the two sets of double-ring auxiliary fixtures are mounted and positioned on the movable support rail respectively, and are arranged on the left and right sides of the subsequent tool. Then, the other end of the blade is fixed to realize the mounting and positioning of the whole device and the double-sided auxiliary fixtures.

[0026] S2. After the system is powered on, it performs a safety self-test, which tests the on / off response of electromagnets DT1 to DT8 (4 in each group) of a set of fixtures, the running status of two sets of horizontal movement stepper motors, and the signal stability of two JC1 infrared distance detection modules (1 on each side). If any component of any fixture is detected abnormally, an audible and visual alarm is immediately triggered and the system is locked, waiting for manual reset and troubleshooting.

[0027] S3. After passing the safety self-check, wait for the operator to send instructions to control the outer moving rings of the two sets of auxiliary fixtures to move synchronously along the V-shaped track of the moving support to the corresponding position of the workpiece torsion section (separately placed on the left and right sides of the tool); then send energizing signals to electromagnets DT1 to DT8 synchronously, and all eight sets of support columns extend at a uniform speed of 5mm / s. The preset extension stroke is controlled by the mechanical limit structure. Relying on the matching of the rated thrust of the electromagnet and the elastic force of the reset spring, the double-sided coordinated light clamping action is realized.

[0028] S4. Start the main machining program. The system simultaneously starts two JC1 infrared distance detection modules to monitor the initial distance between the left and right clamps and the milling cutter in real time (the initial distance must be ≥20cm). After completing the pre-machining preparation, the machine tool is manually started for cutting. During machining, the intelligent control center, as the core control unit, receives data collected by the built-in wireless vibration sensors of the two clamps in real time, and simultaneously monitors the clamping force of the eight telescopic arms. Based on the vibration data, it dynamically fine-tunes the force of the corresponding support column of each clamp, achieving precise vibration suppression through the coordination of eight points on both sides. At the same time, it integrates the distance data of the two infrared modules to intelligently adjust the relative position of the two clamps, ensuring the balance of the auxiliary support on both sides and the stability of machining.

[0029] S5. During the machining process, two infrared distance detection modules continuously and synchronously monitor the distance between the corresponding side fixture and the milling cutter: when the distance on either side is ≤8cm, the system triggers an audible and visual warning to remind the operator to pay attention; if the distance on that side continues to drop to ≤3cm and no manual operation command is received, the intelligent control center will coordinate and control the two sets of fixtures to move synchronously and start the following clamping program—first, send a signal to the corresponding side electromagnets DT1~DT4 to weaken the clamping force (not completely released, maintaining basic clamping and fixing of the workpiece), and synchronously drive the two sets of fixtures to finely adjust their positions along the moving support rail in the matching direction (the side closer to the milling cutter moves 5~10cm, and the other side is simultaneously finely adjusted to maintain balance). After reaching the position, the initial clamping force of all support columns is immediately restored to ensure machining continuity and the stability of the double-sided support.

[0030] S6. After processing is completed, a power-off signal is sent synchronously to electromagnets DT1 to DT8. The eight sets of support columns retract at a constant speed under the action of the reset spring. The two sets of horizontal stepper motors drive the corresponding circular clamps to return to the zero point. The zero point is accurately detected by the limit switch. After both sets of clamps are reset, the system sends a processing completion signal and enters the standby state. Attached Figure Description

[0031] Figure 1 A schematic diagram of the intelligent follow-up auxiliary support fixture and control system for the large blade double-ring assembly;

[0032] Figure 2 This is a schematic diagram of a double-ring auxiliary support fixture structure;

[0033] Figure 3 Exploded view of a double-ring auxiliary support fixture;

[0034] Figure 4 A schematic diagram of the intelligent flexible radial support column inside the double-ring auxiliary fixture;

[0035] Figure 5 Schematic diagram of fuzzy adaptive variable damping four-legged and movable support cross rail structure

[0036] Figure 6 Workflow diagram of the intelligent follow-up auxiliary support fixture for large blade double ring assembly;

[0037] Figure 7 Flowchart of the fuzzy adaptive control algorithm for the clamping force of the dual-ring auxiliary support;

[0038] In the picture:

[0039] 100. Double-ring auxiliary clamp; 101, 102. Moving outer ring; 103. Rotating inner ring; 104, 105. Moving wheel; 106, 107, 108, 109. Intelligent flexible radial support column; 110. Lightweight deep groove ball bearing; 111. Moving wheel drive assembly; 112. Ordinary clearance guide bushing and rubber damping sleeve;

[0040] 200. Clamp support device; 210. Moving crossbeam; 220. Lateral stabilizer bar; 230. Longitudinal stabilizer bar; 240. Locking nut; 250. Support leg; 251. Magnetic suction section at the bottom of the support leg; 252. Lower electromagnetic rheodynamic damping section; 253. Lower connecting section; 254. Upper electromagnetic rheodynamic damping section; 255. Upper connecting section; 256. Vibration sensor;

[0041] 300. Tenon clamp;

[0042] 400. Square-head clamp;

[0043] 500. Workbench.

[0044] 600. Intelligent control system; 610. Infrared distance detector; 620. Bluetooth vibration sensor; 630. Force sensor; 640. Mobile wheel drive assembly; Detailed Implementation

[0045] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention. Unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art.

[0046] like Figures 1-3 As shown, this embodiment discloses a movable auxiliary fixture device for turning large blades, including fixture support devices 210, 220, 230, 240, and 250; auxiliary fixture bodies 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, and 112; an intelligent control system; an infrared distance detector 610; a Bluetooth vibration sensor 620; a force sensor 630; and a moving wheel drive assembly 640.

[0047] Preferably, the auxiliary clamping device of the present invention is divided into three parts: clamping body, clamping support device, and intelligent control part; wherein the clamping support device includes a movable support rail, support feet, a transverse stabilizing rod, a longitudinal stabilizing rod, and a locking nut. The support feet are arranged from bottom to top as a bottom magnetic suction section (251), a lower electromagnetic rheological damping section (252), a lower connecting section (253), an upper electromagnetic rheological damping section (254), an upper connecting section (255), and a top circular mounting position. The bottom magnetic suction section (251) has a built-in electromagnet, which can be attracted to the workbench after being energized to fix the position of the support feet. The electromagnet has pre-drilled holes for the transverse and longitudinal stabilizing rods. The stabilizing rods can be fixed to the bottom of the support feet by locking nuts, thus adapting to the use scenario where the workbench cannot be magnetically attracted; the lower electromagnetic rheological damping section (252) and the upper electromagnetic rheological damping section (253) are connected to the upper electromagnetic rheological damping section (254). Section (254) is divided into four independent chambers by a cross-shaped partition. Each chamber is filled with a mixture of electromagnetic rheological fluid and metal damping particles. A micro-damping hole is also provided at the bottom of the chamber. An excitation coil is embedded in the chamber wall. The viscosity of the electromagnetic rheological fluid can be changed by adjusting the excitation current, thereby realizing the dynamic adjustment of the damping coefficient of the support leg. The lower connecting section (253) and the upper connecting section (255) are both integrated threaded plug structures. They are rigidly connected to the lower electromagnetic rheological damping section (252) and the upper electromagnetic rheological damping section (254) respectively through fine threads. Both of them are provided with double O-type threads on their end faces and thread roots. The ring can achieve independent sealing of the two damping cavities, effectively preventing the medium from crossing the cavities; a vibration sensor (256) is embedded in the top ring mounting position; the horizontal and vertical stabilizer bars are positioned by the preset assembly positions at the bottom of the support feet, and the horizontal and vertical stabilizer bars are fixed to the four support feet by locking nuts. The moving support rail passes through the top ring of the support feet to realize the construction of the clamp support device. During operation, the clamp support device is first built, and then one end is fixed by the main clamp on one side (connected to the workbench, not part of this equipment). Then, the large blade passes through the hole in the center clamping part of the auxiliary clamp body, and then is mounted by the reserved track holes on both sides of the outer rotating inner ring and the moving support rail. The moving wheel loaded in the hole of the rotating inner ring rolls in the groove of the moving support rail to realize lateral movement and positioning. After completion, the other end is clamped to complete the overall mounting.

[0048] Preferably, the clamping support device of the large-blade double-ring intelligent follow-up auxiliary support fixture of the present invention adopts four identical support legs arranged in a rectangular layout. The four support legs jointly support the moving support rail and the auxiliary fixture, and each of the four support legs has a vibration sensor (256) embedded in the top circular mounting position. Each vibration sensor (256) can collect local vibration data of the moving support rail in real time and transmit the data to the intelligent control center. Based on the multi-source vibration feedback data, the intelligent control center dynamically adjusts the movement of each support leg through a distributed collaborative control algorithm. The excitation current of the electromagnetic rheodynamic damping section (252) and the upper electromagnetic rheodynamic damping section (254) can independently adjust the damping coefficient of each support leg, so as to achieve precise matching of the damping force of multiple support legs. When the abnormal local vibration amplitude of the moving support rail is detected, the intelligent control center will prioritize adjusting the damping coefficient of the support leg in the corresponding area, and at the same time adjust the damping output of the adjacent support legs. By dispersing the shock absorption load, the impact of the support legs on the bottom magnetic fixing surface is reduced, effectively preventing magnetic fixing failure, thereby significantly improving the overall stability and vibration resistance of the clamp support device.

[0049] Preferably, the auxiliary clamping device of this invention further includes a clamping body, comprising: 101, 102 a movable outer ring; 103, a rotating inner ring; 104, 105 movable wheels; 106, 107, 108, 109 intelligent flexible radial support columns; 110, a lightweight deep groove ball bearing; 111; a movable wheel drive assembly; and 112 a common clearance guide bushing and a rubber damping sleeve. The movable wheels include two sets of V-shaped movable wheel assemblies and one set of transverse drive assemblies, enabling smooth rolling on the V-shaped track of the movable support rail. The transverse drive assembly includes a stepper motor, a gearbox, and a microstepping driver. The stepper motor is used to adjust the axial position of the outer movable outer ring along the movable support rail, and the zero-point position of the outer movable outer ring is detected and confirmed by a limit switch. An infrared rangefinder is fixed to one front end face of the outer movable outer ring via an L-shaped bracket, with the detection probe facing the direction of the milling cutter's movement trajectory. Its signal output terminal is connected to the main control unit (microcontroller) of the clamping device for subsequent milling cutter following during machining. Four sets of radial telescopic clamping assemblies are distributed circumferentially along the inner rotating inner ring. Each set of clamping assemblies includes a push-pull electromagnet, a reset spring, a guide bushing, a damping buffer sleeve, and a polyurethane flexible head. The electromagnet is embedded in the radial mounting cavity of the inner rotating inner ring, and its push rod end is connected to the support column body. The reset spring is sleeved in the middle section of the rod body, and the damping buffer sleeve is fixed to the inner wall of the mounting cavity, which can limit the telescopic speed of the support column.

[0050] The preferred embodiment of this invention features a rotating inner ring (103) with grooves on both sides. A lightweight deep groove ball bearing (110) is secured inside the rotating inner ring via these grooves. A movable outer ring (101) engages with the inner rotating inner ring via a protruding portion at its central cavity, thus enabling the inner ring to drive an intelligent flexible radial support column that follows the rotation of the large blade during processing. This mechanism can also be used for clamping at different positions. The rotating mechanism also includes a double-layer sealing assembly: an outer layer of polyurethane lip-shaped dustproof ring and an inner layer of a combination of nitrile rubber O-rings and polytetrafluoroethylene retaining rings. This prevents cutting chips and cutting fluid from intruding into the bearing and friction mating surfaces, making it suitable for various processing environments and effectively improving the lifespan and stability of the auxiliary fixture. The movable outer ring and the rotating inner ring, connected in the above manner, enable the large blade double-ring intelligent follow-up auxiliary support fixture to achieve lateral movement and arbitrary axial rotation during processing. Combined with an intelligent control system, it can achieve clamping of the large blade at any position and tool following, thus achieving effective vibration suppression throughout the entire process.

[0051] Preferably, the intelligent control system of this invention includes a computer, a microcontroller, a Bluetooth vibration sensor, a force sensor, an audible and visual alarm, and a relay module. The microcontroller pre-stores two levels of distance thresholds. When the infrared rangefinder detects a distance ≤ 8cm, it can trigger the audible and visual alarm to issue a warning. When the distance is ≤ 3cm and no manual operation command is received, the microcontroller first sends a power-off signal to four sets of electromagnets through the relay module, causing the support column to retract and release the workpiece under the action of the reset spring. Then, it sends a reverse drive command to the transverse drive assembly, driving the outer moving ring to move away from the milling cutter, thereby achieving automatic tool avoidance and avoiding hard interference. At the same time, the computer can monitor the changes in the bearing force of the eight intelligent flexible radial support columns of the two auxiliary fixtures, and adjust the bearing force changes in real time through manual or computer judgment, realizing multi-point collaborative control.

[0052] In one example, the present invention provides a method for controlling the moving mechanism of the device, characterized by comprising the following six steps:

[0053] S1. The two sets of support legs are locked to the worktable by powering on them respectively, and the two sets of support legs are connected and fixed by a stabilizing rod. After the fixation is completed, the movable support rail is mounted to fix one end of the blade to be processed. Then, the two sets of double-ring auxiliary fixtures are mounted and positioned on the movable support rail respectively, and are arranged on the left and right sides of the subsequent tool. Then, the other end of the blade is fixed to realize the mounting and positioning of the whole device and the double-sided auxiliary fixtures.

[0054] S2. After the system is powered on, it performs a safety self-test, which checks the on / off response of electromagnets DT1~DT8 (4 in each group) for the two sets of fixtures, the running status of the two sets of horizontal movement stepper motors, and the signal stability of the two JC1 infrared distance detection modules (1 on each side). If any component of the fixture is detected abnormally, an audible and visual alarm is immediately triggered and the system is locked, waiting for manual reset and troubleshooting.

[0055] S3. After passing the safety self-check, wait for the operator to send instructions to control the outer moving rings of the two sets of auxiliary fixtures to move synchronously along the V-shaped track of the moving support to the corresponding position of the workpiece torsion section (separately placed on the left and right sides of the tool); then send energizing signals to electromagnets DT1 to DT8 synchronously, and all eight sets of support columns extend at a uniform speed of 5mm / s. The preset extension stroke is controlled by the mechanical limit structure. Relying on the matching of the rated thrust of the electromagnet and the elastic force of the reset spring, the double-sided coordinated light clamping action is realized.

[0056] S4. Start the main machining program. The system simultaneously starts two JC1 infrared distance detection modules to monitor the initial distance between the left and right clamps and the milling cutter in real time (the initial distance must be ≥20cm). After completing the pre-machining preparation, the machine tool is manually started for cutting. During machining, the intelligent control center, as the core control unit, receives data collected by the built-in wireless vibration sensors of the two clamps in real time, and simultaneously monitors the clamping force of the eight telescopic arms. Based on the vibration data, it dynamically fine-tunes the force of the corresponding support column of each clamp, achieving precise vibration suppression through the coordination of eight points on both sides. At the same time, it integrates the distance data of the two infrared modules to intelligently adjust the relative position of the two clamps, ensuring the balance of the auxiliary support on both sides and the stability of machining.

[0057] S5. During the machining process, two infrared distance detection modules continuously and synchronously monitor the distance between the corresponding side fixture and the milling cutter: when the distance on either side is ≤8cm, the system triggers an audible and visual warning to remind the operator to pay attention; if the distance on that side continues to drop to ≤3cm and no manual operation command is received, the intelligent control center will coordinate and control the two sets of fixtures to move synchronously and start the following clamping program—first, send a signal to the corresponding side electromagnets DT1~DT4 to weaken the clamping force (not completely released, maintaining basic clamping and fixing of the workpiece), and synchronously drive the two sets of fixtures to finely adjust their positions along the moving support rail in the matching direction (the side closer to the milling cutter moves 5~10cm, and the other side is simultaneously finely adjusted to maintain balance). After reaching the position, the initial clamping force of all support columns is immediately restored to ensure machining continuity and the stability of the double-sided support.

[0058] S6. After processing is completed, a power-off signal is sent synchronously to electromagnets DT1 to DT8. The eight sets of support columns retract at a constant speed under the action of the reset spring. The two sets of horizontal stepper motors drive the corresponding circular clamps to return to the zero point. The zero point is accurately detected by the limit switch. After both sets of clamps are reset, the system sends a processing completion signal and enters the standby state.

[0059] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A double-ring intelligent follow-up auxiliary support fixture for milling large blades, characterized in that: The auxiliary fixture consists of three parts: fixture body (100), fixture support device, and intelligent control system (600); wherein the fixture body (100) includes a movable outer ring (101, 102); a rotating inner ring (103); movable wheels (104, 105); radial telescopic support columns (106, 107, 108, 109); a lightweight deep groove ball bearing (110); a movable wheel drive assembly (111); and a general clearance guide bushing and rubber damping sleeve (112). The clamp support device includes: a pair of movable support rails (210); a pair of lateral stabilizers (220); a pair of longitudinal stabilizers (230); and a locking nut (240); support legs (250); and an intelligent control system (600) including: an infrared distance detector (610); a Bluetooth vibration sensor (620); a Bluetooth force sensor (630); a movable wheel drive assembly (640); and the main body of the intelligent control device (650). The pair of moving horizontal rails (210) with a 60° V-shaped rail above them are used to realize the lateral movement of the mechanism. The mechanism is mounted on the worktable by four supporting feet (250). The moving wheels (104, 105) are equipped with motors. The moving wheels (104, 105) are symmetrically installed on the inner side of the moving outer ring. The moving outer ring is divided into two parts and connected by rivets. A lightweight deep groove ball bearing (110) is used as the core rotating pair to connect the inner rotating inner ring and the outer moving outer ring. The fixture is connected and coordinated in two parts. It can achieve 360° rotation, which is suitable for large blade rotation machining and can be adapted to clamping different shapes and positions of large blades. At the same time, it can realize autonomous tool following without manual adjustment of the clamping position, which can greatly improve the machining accuracy.

2. The movement mode of the clamping device according to claim 1, characterized in that: A pair of moving wheel assemblies are symmetrically mounted radially on the outer moving ring. The moving wheels of the moving wheel assemblies are polyurethane-coated V-shaped wheels. An infrared rangefinder is installed on the surface of the outer moving ring, which can detect and collect the distance data between the clamping device and the milling cutter in real time. This data is used by the intelligent control system to adjust the two-phase stepper motor, which serves as the drive end. The output shaft of the two-phase stepper motor is directly connected to the axle of the walking wheel of one of the moving wheel assemblies through a planetary gearbox with a reduction ratio of 1:10, in order to avoid inertial impacts generated during high-speed movement of the device. The V-shaped wheels are mounted by fitting with V-grooves on the moving horizontal rail. The intelligent control system receives the real-time distance data from the infrared rangefinder and compares it with a preset target distance threshold. When the real-time distance exceeds the preset threshold range, the system outputs a control command to drive the two-phase stepper motor to move the moving wheel assembly, thereby realizing the movement of the clamping device along the axial direction of the moving horizontal rail and the correction of the distance.

3. The fuzzy adaptive control algorithm for the movement mode of the clamping device according to claim 2, characterized in that: The computer control system utilizes a fuzzy adaptive control algorithm to achieve closed-loop control of the distance between the clamping device and the milling cutter. The fuzzy adaptive control algorithm takes the distance deviation and the rate of change of the distance between the clamping device and the milling cutter as input variables, and the correction values ​​of proportional, integral, and derivative parameters as output variables. It presets fuzzy control rules adapted to milling cutter distance correction. Based on the fuzzy adaptive control algorithm, the computer control system calculates the distance deviation and the rate of change of the distance deviation from real-time distance data collected by an infrared rangefinder. After reasoning through the fuzzy control rules, it dynamically and adaptively adjusts the proportional, integral, and derivative parameters. Then, based on the adjusted parameters, it calculates the pulse output of the two-phase stepper motor and optimizes the output control command. The control command adapts to the transmission characteristics of the two-phase stepper motor and the 1:10 planetary gearbox, driving the two-phase stepper motor to move precisely according to the pulse output, achieving precise positioning and follow-up of the moving wheel assembly, and ensuring that the distance control accuracy between the clamping device and the milling cutter reaches ±0.05mm, achieving high-precision closed-loop correction of their distance.

4. This section describes a support leg for a movable auxiliary fixture. The support leg, from bottom to top, consists of a bottom magnetic section (251), a lower electromagnetic rheodynamic damping section (252), a lower connecting section (253), an upper electromagnetic rheodynamic damping section (254), an upper connecting section (255), and a top circular mounting position. The bottom magnetic section (251) has a built-in electromagnet that, when energized, can be attracted to the worktable to fix the support leg's position. The electromagnet has pre-drilled holes for horizontal and vertical stabilizing rods. The stabilizing rods can be fixed to the bottom of the support leg using locking nuts, thus adapting to scenarios where the worktable cannot be magnetically attracted; the lower electromagnetic rheodynamic damping section (251)... 252) and the upper electromagnetic rheological damping section (254) are divided into four independent chambers by a cross-shaped partition. Each chamber is filled with a mixture of electromagnetic rheological fluid and metal damping particles. The bottom of the chamber is also provided with micro damping holes. The chamber wall is embedded with an excitation coil. The viscosity of the electromagnetic rheological fluid can be changed by adjusting the excitation current, thereby realizing the dynamic adjustment of the damping coefficient of the support leg. The lower connecting section (253) and the upper connecting section (255) are both integrated threaded plug structures. They are rigidly connected to the lower electromagnetic rheological damping section (252) and the upper electromagnetic rheological damping section (254) respectively by fine threads. Both of them are provided with double O-type threads on their end faces and thread roots. The ring can achieve independent sealing of the two damping cavities, effectively preventing the medium from flowing between cavities; a vibration sensor (256) is embedded in the mounting position of the top ring. This sensor is used to detect the vibration amplitude and frequency of the moving support rail mounted on the top ring in real time. At the same time, an oil injection port is provided on the side wall of the top ring. The oil injection port is connected to the lower and upper electromagnetic rheological damping cavities through the internal flow channel. The medium can be replenished without disassembling the parts. The telescopic joint of the support leg is also equipped with a dynamic sealing structure to prevent medium leakage and particle overflow. The movable auxiliary clamp support device adopts four identical support legs arranged in a rectangular layout. The four support legs jointly support the moving horizontal rail and the auxiliary clamp. Vibration sensors (256) are embedded in the top circular mounting positions of the four support legs. Each vibration sensor (256) can collect local vibration data of the moving horizontal rail in real time and transmit the data to the intelligent control center. Based on the multi-source vibration feedback data, the intelligent control center dynamically adjusts the excitation current of the lower electromagnetic rheodynamic damping section (252) and upper electromagnetic rheodynamic damping section (254) of each support leg through a distributed collaborative control algorithm. It can independently adjust the damping coefficient of each support leg to achieve precise matching of the damping force of multiple support legs. When an abnormal local vibration amplitude is detected in the moving horizontal rail, the intelligent control center will prioritize adjusting the damping coefficient of the support leg in the corresponding area and simultaneously adjust the damping output of adjacent support legs. By dispersing the shock absorption load, the impact of the support legs on the bottom magnetic fixing surface is reduced, effectively preventing magnetic fixing failure, thereby significantly improving the overall stability and vibration resistance of the clamp support device.

5. The multi-point clamping design of a thin-walled large blade auxiliary processing equipment according to claim 1, characterized in that: Four sets of intelligent flexible radial support columns, symmetrically distributed circumferentially along the inner rotating ring of the double-ring auxiliary fixture, are pre-embedded in radial countersunk mounting cavities. The depth of the mounting cavity matches the retracted length of the support columns, preventing protrusion from the inner wall and avoiding interference during workpiece clamping and rotation. The four sets of symmetrical layouts enable multi-point uniform force distribution, avoiding uneven load deformation on the workpiece waist and improving clamping stability, providing precise support for waist machining. Each mounting cavity contains a standard clearance guide bushing and a rubber damping sleeve. The damping sleeve wraps around the arm body to limit extension / retraction speed. A rubber gasket at the end of the mounting cavity, in conjunction with a reset spring, buffers the retraction impact and prevents damage. The support columns are driven by DT1~DT4 type push-pull electromagnets (DC24V, 20mm stroke, 50N thrust). The electromagnets are pre-embedded in the fixed seat at the end of the mounting cavity. The push rod end is connected to the tail of the arm body through an elastic pad with an anti-loosening cotter pin, compensating for slight workpiece dimensional differences and vibrations. Equipped with a low-cost PWM speed control module, four sets of parallel drives ensure consistent operation; a reset spring is connected to the tail of the support column (preload matches the electromagnet thrust), a travel proximity switch is installed in the middle section of the rod, and a low-cost wireless vibration sensor (collecting amplitude and frequency) is built into the flexible clamping head at the end, transmitting signals via BLE and powered by a lithium-ion battery (battery life ≥2 years), avoiding the difficulties of rotational wiring. During extension, the PWM module adjusts the current to ensure smooth extension of the arm, the rubber damping sleeve limits speed and prevents impact, and the mechanical limit block controls the stroke to indirectly control the force, achieving light clamping and preventing deformation. During operation, the vibration sensor collects vibration data of the blade waist processing in real time and transmits it to the control system. The system, according to a preset threshold, links the PWM module to fine-tune the current and dynamically adjust the clamping force to suppress vibration and improve waist processing stability; during retraction, the electromagnet is de-energized, the reset spring pulls the arm back, the rubber pad buffers the impact, until the travel proximity switch feedback resets to the correct position, and the arm returns to the pre-embedded state.

6. The intelligent flexible radial support column in the auxiliary clamp according to claim 5, characterized in that: Each radial telescopic support column is equipped with a flexible clamping end, which is integrally molded from polyurethane material of Shore A50~70. The end is detachably connected to the support column body via internal threads for easy replacement after wear. The flexible clamping end is located at the top of the support column and has a pre-embedded Bluetooth vibration sensor. A miniature force sensor is embedded in the middle of the support column body. Both share a BLE Bluetooth module for signal connection with the computer control system, forming a "force-vibration" dual feedback system. The clamping surface of the flexible clamping end is designed with a spherical protrusion structure to match the waist contour of the large blade to be processed, which can increase the clamping contact area, disperse the clamping pressure, and avoid local stress concentration that could lead to deformation of the thin-walled blade. The computer control system adopts a dual-input fuzzy adaptive adaptive control algorithm, using real-time clamping force data from the middle force sensor and processing vibration data from the top Bluetooth vibration sensor as dual inputs. It links the PWM speed control module to precisely fine-tune the corresponding electromagnet current, realizing differentiated force control for the four sets of support columns, taking into account clamping stability, thin-walled component protection requirements, and chatter suppression effects.

7. The fuzzy adaptive algorithm for multi-point clamping control of auxiliary processing equipment for thin-walled large blades according to claim 5, characterized in that: The control system employs a dual-input fuzzy adaptive control algorithm, linking a Bluetooth vibration sensor, a miniature force sensor, a PWM speed control module, and a travel proximity switch on an intelligent flexible radial support column. This algorithm uses the blade vibration amplitude and frequency, along with the real-time clamping force, as dual inputs, and the electromagnet PWM duty cycle correction as the output. It pre-defines a fuzzy rule library adapted to the working conditions of thin-walled blades. During extension clamping, the algorithm outputs a reference PWM command to drive four sets of electromagnets to extend synchronously. Calibration of current deviation ensures synchronized action, and the speed is fine-tuned using a rubber damping sleeve. After reaching the preset travel distance, feedback from the force sensor achieves ±0.3N. Precision lightweight clamping; during machining, dual sensors transmit data in real time. After comparing the data with thresholds, the algorithm increases the adaptive proportional parameter to increase the clamping force if the vibration exceeds the threshold and the clamping force is within the safe range (≤40N). If the vibration exceeds the threshold but the clamping force has reached the upper limit, a tool warning is triggered. If the vibration is too low and the clamping force is too high, the adaptive integral parameter is reduced to decrease the force, stabilizing the vibration amplitude at ≤0.015mm and achieving a suppression efficiency of ≥45%. During retraction and return, the algorithm controls the electromagnet to de-energize and monitors the retraction status through the stroke signal. If the speed is too fast, a weak current is output for buffering. After all four groups are reset to their positions, the pre-embedded state is locked. This algorithm takes into account the requirements of clamping synchronization, vibration suppression, and anti-deformation through dual input feedback and adaptive parameter adjustment.

8. A fuzzy adaptive control method for a movable auxiliary fixture for machining irregularly shaped parts, characterized in that, The auxiliary clamp according to any one of claims 1-6 is used, comprising the following steps: S1. The two sets of support legs are locked to the worktable by powering on them respectively, and the two sets of support legs are connected and fixed by a stabilizing rod. After the fixation is completed, the moving horizontal rail is mounted to fix one end of the blade to be processed. Then, the two sets of double-ring auxiliary fixtures are mounted and positioned on the moving horizontal rail respectively, and are arranged on the left and right sides of the subsequent tool. Then, the other end of the blade is fixed to realize the mounting and positioning of the whole device and the double-sided auxiliary fixtures. 9.S2. After the system is powered on, a safety self-test is performed. The on / off response of electromagnets DT1~DT8 (4 in each group) of the two sets of fixtures is tested, as well as the running status of the two sets of horizontal movement stepper motors and the signal stability of the two JC1 infrared distance detection modules (1 on each side). If any component of the fixture is detected abnormally, an audible and visual alarm is immediately triggered and the system is locked, waiting for manual reset and troubleshooting. 10.S3 After the safety self-check passes, wait for the operator to send instructions to control the outer moving rings of the two sets of auxiliary fixtures to move synchronously along the V-shaped moving rails to the corresponding positions of the workpiece torsion section (separately placed on the left and right sides of the tool); then send energizing signals to electromagnets DT1 to DT8 synchronously, and all eight sets of support columns extend at a uniform speed of 5mm / s. The preset extension stroke is controlled by the mechanical limit structure, and the double-sided coordinated light clamping action is achieved by matching the rated thrust of the electromagnet with the elastic force of the reset spring. 11.S4 Start the main machining program. The system will simultaneously start two JC1 infrared distance detection modules to monitor the initial distance between the left and right side fixtures and the milling cutter in real time (the initial distance must be ≥20cm). After completing the pre-machining preparation, the machine tool will be manually started for cutting. During processing, the intelligent control center, as the core control unit, receives data collected in real time from the built-in wireless vibration sensors of the two sets of fixtures, and simultaneously monitors the clamping force of the eight telescopic arms. It dynamically fine-tunes the force of the corresponding support column of each fixture by combining the vibration data, and achieves precise chatter suppression through the coordination of eight points on both sides. At the same time, it integrates the distance data of the two infrared modules to intelligently adjust the relative position of the two sets of fixtures to ensure the balance of the auxiliary support on both sides and the stability of processing. 12.S5 During the machining process, two infrared distance detection modules continuously and synchronously monitor the distance between the corresponding side fixture and the milling cutter: when the distance on either side is ≤8cm, the system triggers an audible and visual warning to remind the operator to pay attention; if the distance on that side continues to drop to ≤3cm and no manual operation command is received, the intelligent control center will control the two sets of fixtures to move synchronously and start the following clamping program—first, send a signal to the corresponding side electromagnets DT1~DT4 to weaken the clamping force (not completely released, maintaining basic clamping and fixing of the workpiece), and synchronously drive the two sets of fixtures to finely adjust their positions along the moving horizontal rail in the matching direction (the side closer to the milling cutter moves 5~10cm, and the other side is simultaneously finely adjusted to maintain balance). After reaching the position, the initial clamping force of all support columns is immediately restored to ensure machining continuity and the stability of the double-sided support. 13.S6 After processing is completed, a power-off signal is sent synchronously to electromagnets DT1 to DT8. The eight sets of support columns retract at a constant speed under the action of the reset spring. The two sets of horizontal stepper motors drive the corresponding circular clamps to return to the zero point. The zero point is accurately detected by the limit switch. After both sets of clamps are reset, the system sends a processing completion signal and enters the standby state.

Images