Turning device for machining multidirectional fixed connecting piece

Abstract

The invention relates to the technical field of turning machining, and discloses a turning device for machining a multidirectional fixed connecting piece, the turning device comprises a lathe, and a basic gypsum filling system and an embedded micro-supporting structure system which are integrated on the lathe, and a workpiece is stably and fixedly machined into the multidirectional fixed connecting piece through a workpiece clamping mechanism of the lathe; and the basic gypsum filling system comprises a gypsum injection mechanism and a curing control mechanism, the gypsum injection mechanism is used for injecting a gypsum material in a flowing state into an inner cavity of the workpiece, and the curing control mechanism is used for controlling local temperature and humidity of a workpiece filling area so that the gypsum material can be cured according to preset time. According to the turning device for machining the multidirectional fixed connecting piece, the problem of local micro-vibration caused by the complex structure of the multidirectional fixed connecting piece in the turning process is effectively solved through combination of an embedded micro-supporting structure system and a traditional gypsum filling process.

Description

Technical Field

[0001] The present invention relates to the field of turning, and more particularly to a turning device for processing multi-directional fixed connecting parts. Background Art

[0002] Plaster filling of thin-walled workpieces is a specialized method used in cutting processes to address the problem of deformation in thin-walled parts. This process enhances the stability of multi-directional fixed connectors during turning, relying on the solid properties of the plaster to provide support.

[0003] Existing gypsum filling materials have a homogeneous structure and cannot provide differentiated support for the stiffness requirements of different areas of the workpiece. In the complex structure of multi-directional fixed connectors, micro-vibrations still exist in certain key connection parts, affecting the quality of the processed surface. Summary of the Invention

[0004] The present invention provides a turning device for processing a multi-directional fixed connecting piece, which solves the technical problem in the related art that in the complex structure of the multi-directional fixed connecting piece, some key connecting parts still have micro-vibrations, which affects the quality of the processed surface.

[0005] The present invention provides a turning device for machining multi-directional fixed connectors, comprising a lathe and a basic gypsum filling system and an embedded micro-support structure system integrated on the lathe. A workpiece is stably fixed by a workpiece clamping mechanism of the lathe to machine the multi-directional fixed connector.

[0006] The basic gypsum filling system includes a gypsum injection mechanism and a curing control mechanism. The gypsum injection mechanism is used to inject the flowing gypsum material into the inner cavity of the workpiece. The curing control mechanism is used to adjust the local temperature and humidity of the workpiece filling area so that the gypsum material is cured according to the predetermined time.

[0007] The embedded micro-support structure system includes a micro-support element, a micro-support structure implantation unit, and a workpiece vibration analysis module. The micro-support structure implantation unit places the micro-support element at the key vibration nodes inside the workpiece. The workpiece vibration analysis module is used to identify the key vibration node locations where micro-vibration occurs during the turning process.

[0008] The micro-support element is a prefabricated component, and the element types of the micro-support element include axial support type, radial support type and multi-directional composite type;

[0009] The axial support type micro-support element is in the shape of a slender column and is used to bear and disperse the longitudinal cutting force;

[0010] The radial support type micro-support element has a radial or annular structure and is used to resist radial cutting force and torque;

[0011] The multi-directional composite micro-support element adopts a grid or honeycomb structure to resist cutting forces and vibrations in multiple directions at the same time.

[0012] Furthermore, the micro-support structure implantation unit includes a precise positioning mechanism and a micro-support element release mechanism. The precise positioning mechanism includes a robotic arm and a three-dimensional displacement platform. The robotic arm is fixed to the lathe frame to rotate the micro-support element to a suitable angular position. The robotic arm provides fine adjustment in the X, Y, and Z directions and moves the micro-support element to a predetermined position based on the vibration analysis results of the workpiece vibration analysis module.

[0013] The micro-support element release mechanism uses a combination of mechanical clamping and pneumatic pushing to place the micro-support element on the key vibration node inside the workpiece.

[0014] Furthermore, the precise positioning mechanism also includes an optical positioning system, which includes a high-resolution industrial camera, a structured light projector, an image processing unit, and a positioning algorithm module;

[0015] The high-resolution industrial camera adopts a binocular stereo vision design and is equipped with a macro lens to capture the fine structural features of the workpiece cavity. The structured light projector can project a specifically coded structured light pattern into the workpiece cavity to form a three-dimensional spatial reference mark; the image processing unit processes the image data collected by the camera in real time; the positioning algorithm module calculates the precise implantation position coordinates of the micro-support element based on the structured light triangulation measurement principle and feature matching algorithm.

[0016] Furthermore, the steps for precise positioning of the optical positioning system are as follows:

[0017] The structured light projector projects a coded grating pattern into the inner cavity of the workpiece, and the coded grating pattern forms deformed light stripes on the surface of the inner cavity of the workpiece;

[0018] The binocular camera captures images of the deformed light stripes from different angles simultaneously;

[0019] The image processing unit pre-processes the acquired image, including noise filtering, light streak extraction and code recognition;

[0020] The positioning algorithm module is based on the principle of triangulation. It reconstructs the three-dimensional point cloud model of the workpiece cavity by analyzing the deformation degree and position offset of the light stripes.

[0021] The reconstructed 3D point cloud model is registered with the workpiece CAD model, and the key node positions determined by vibration analysis are mapped to the actual workpiece coordinate system to calculate the precise implantation position and posture of the micro-support element.

[0022] Furthermore, the micro-support element release mechanism is also provided with a fast-curing glue spraying mechanism, which includes a spray head, a glue tank and a glue pump. The glue pump is connected to the spray head and the glue tank through a pipe. The curing glue is pumped out of the glue tank through the glue pump. The spray head automatically sprays a small amount of fast-curing glue on the contact point between the micro-support element and the inner cavity of the workpiece, so that the micro-support element is fixed at the key vibration node position in the inner cavity of the workpiece.

[0023] Furthermore, the workpiece vibration analysis module includes a vibration signal acquisition mechanism and a vibration modal analysis system. The vibration signal acquisition mechanism includes a high-sensitivity acceleration sensor arranged on the surface of the workpiece, and the vibration data of the workpiece under simulated cutting conditions is collected by the high-sensitivity acceleration sensor;

[0024] Based on the collected vibration data, the vibration modal analysis system calculates the key node positions and vibration characteristics of the workpiece where micro-vibration occurs during the actual turning process.

[0025] Furthermore, the gypsum injection mechanism includes a gypsum storage container, a flow control valve, an injection pump and an injection pipe. The gypsum storage container and the flow control valve are connected by the injection pipe. The injection pump is used to accurately inject the flowing gypsum material into the inner cavity of the workpiece.

[0026] Furthermore, the micro-support element is made of a high-rigidity polymer material or a lightweight metal alloy, and the outer surface of the micro-support element is provided with a texture structure.

[0027] Furthermore, the workpiece clamping mechanism includes a clamping jaw group and a positioning pin group. The clamping jaw group is driven by hydraulic pressure to provide clamping force and maintain the clamping state, and the positioning pin group is used to accurately locate the angular position of the workpiece.

[0028] Furthermore, to accommodate multi-directional fixed connectors of different shapes and sizes, the micro-support structure implant unit is equipped with a replaceable implant head that can be quickly adjusted according to the specific shape and size of the workpiece cavity.

[0029] The beneficial effects of the present invention are:

[0030] The turning device for machining multi-directional fixed connectors provided by the present invention effectively solves the problem of local micro-vibration caused by the complex structure of multi-directional fixed connectors during turning by combining an embedded micro-support structure system with a traditional gypsum filling process. It has the following technical effects:

[0031] First, the embedded micro-support structure system overcomes the technical bottleneck of traditional homogeneous gypsum filling, which is unable to meet differentiated support requirements. Traditional gypsum filling has a homogeneous structure with uniform stiffness, and cannot provide differentiated support for the specific needs of different areas of the workpiece. This embodiment implants micro-support elements with higher stiffness than gypsum at key vibration nodes, forming a "skeleton-filler" composite support system. This provides enhanced support for key parts of multi-directional fixed connectors and specifically addresses the micro-vibration problem caused by insufficient local stiffness.

[0032] Secondly, the precise positioning implantation technology improves the support efficiency. The micro-support structure implantation unit of this embodiment can accurately place the micro-support element on the key vibration node inside the workpiece through the three-dimensional displacement platform and the optical positioning system, avoiding material waste while maximizing the support effect of the micro-support element. In particular, the structured light three-dimensional reconstruction technology and multi-scale feature matching algorithm adopted by the optical positioning system achieve high-precision positioning of ±0.01mm in a complex inner cavity environment, solving the technical problem that traditional positioning methods are difficult to achieve precise positioning under non-direct viewing conditions. The system can adapt to workpiece surfaces with different reflective characteristics, and ensures that clear images can be obtained under various lighting conditions through adaptive exposure control technology, which greatly improves the reliability and adaptability of positioning. The workpiece vibration analysis module can accurately identify key positions that require key support by collecting actual vibration data and combining finite element analysis and cutting force prediction, providing a scientific basis for the placement of micro-support elements.

[0033] Thirdly, the diverse design of micro-support elements adapts to the multi-directional support requirements of complex workpieces. The three basic forms of micro-support elements provided in this embodiment are axial support, radial support, and multi-directional composite. These can provide targeted support for cutting forces and vibration characteristics in different directions, forming a full-range support network. The special texture structure on the outer surface of the micro-support element enhances the bonding strength with the surrounding gypsum material, enabling the entire support system to work in synergy, further improving the support effect.

[0034] Furthermore, this embodiment maintains the convenience and operability of the traditional plaster filling process. The size and number of micro-support elements are relatively small, which does not significantly increase process complexity and cost. The plaster filling and curing process is similar to the traditional process, and operators can master it without additional training. Flexible and diverse methods are available for removing support material, and the appropriate removal method can be selected based on the material properties of the micro-support elements to ensure that the workpiece itself is not damaged.

[0035] Experimental verification shows that when using the embedded micro-support structure system of this embodiment, the vibration amplitude of key connection parts of multi-directional fixed connectors under high-speed precision turning conditions is significantly reduced, the surface roughness is reduced by more than 30%, and the processing accuracy is improved by more than 40%, effectively improving the processing quality and efficiency of multi-directional fixed connectors, and providing reliable process guarantees for the turning processing of high-precision multi-directional fixed connectors. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of a turning device for processing a multi-directional fixed connection part proposed by the present invention;

[0037] Figure 2 The present invention Figure 1 Schematic diagram of the connection structure between the embedded micro-support structure system and the basic gypsum filling system;

[0038] Figure 3 Schematic diagram of the clamping structure of the micro-support element of the present invention;

[0039] Figure 4 Schematic diagram of various types of micro-support elements of the present invention.

[0040] In the figure: 100, lathe; 110, workpiece clamping mechanism; 200, micro-support structure implantation unit; 210, robotic arm; 211, clamping jaw group; 220, three-dimensional displacement platform; 230, high-resolution industrial camera; 300, micro-support element; 310, multi-directional composite micro-support element; 320, radial support type micro-support element; 330, axial support type micro-support element; 400, gypsum injection mechanism; 410, gypsum storage container; 420, flow control valve; 430, injection pump; 440, injection pipeline; 500, fast-curing glue spraying mechanism; 510, glue pump; 520, glue tank; 530, spray head. DETAILED DESCRIPTION

[0041] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0042] like Figures 1-4 As shown, a turning device for processing multi-directional fixed connecting parts includes a lathe 100 and two parts: a basic gypsum filling system and an embedded micro-support structure system integrated on the lathe 100;

[0043] The basic plaster filling system includes a plaster injection mechanism 400 and a curing control mechanism. The plaster injection mechanism 400 includes a plaster storage container 410, a flow control valve 420, an injection pump 430, and an injection pipe 440. The injection pipe 440 connects the plaster storage container 410 and the injection pump 430. The injection pump 430 is used to accurately inject the flowing plaster material into the inner cavity of the workpiece.

[0044] The curing control mechanism is used to control the local temperature and humidity of the workpiece filling area, and achieves temperature and humidity coordination through a sealed cavity or a directional temperature control nozzle to ensure that the gypsum material completes the curing process according to the scheduled time.

[0045] The workpiece is clamped by the workpiece clamping mechanism 110 of the lathe 100, wherein the workpiece clamping mechanism 110 of the lathe 100 includes a clamping jaw group 211 and a positioning pin group. The clamping jaw group 211 is provided with a clamping force by a hydraulic drive device and maintains a clamping state. The positioning pin group ensures that the angular position of the workpiece is accurately positioned. Together, they are used to stably fix the workpiece to ensure that it does not move during the filling process.

[0046] The embedded micro-support structure system includes a micro-support element 300, a micro-support structure implantation unit 200 and a workpiece vibration analysis module;

[0047] The micro-support element 300 is a prefabricated component made of an engineering material with higher rigidity than gypsum. Its shape design follows the principle of mechanical optimization and mainly includes three basic forms: axial support micro-support element 330, radial support micro-support element 320, and multi-directional composite micro-support element 310.

[0048] The axial support type micro-support element 330 is in the shape of a slender column and is mainly used to bear and disperse the longitudinal cutting force;

[0049] The radial support type micro-support element 320 is a radial or annular structure, and is mainly used to resist radial cutting force and torque;

[0050] The multi-directional composite micro-support element 310 adopts a grid or honeycomb structure, which can simultaneously resist cutting forces and vibrations in multiple directions;

[0051] The micro-support structure implant unit 200 includes a precise positioning mechanism and a micro-support element 300 release mechanism;

[0052] The precise positioning mechanism consists of a robotic arm 210, a three-dimensional displacement platform 220, and an optical positioning system. The robotic arm 210 is fixed to the lathe 100 frame and can move along the main axis of the lathe 100. The rotation of the main axis of the lathe 100 rotates the workpiece to a suitable angular position. The three-dimensional displacement platform 220 on the robotic arm 210 provides fine adjustment capabilities in the X, Y, and Z directions. This combined motion method can accurately move the micro-support element 300 to a predetermined position based on the workpiece vibration analysis results.

[0053] The release mechanism of the micro-support element 300 uses a combination of mechanical clamping and pneumatic pushing to accurately place the micro-support element 300 on the key vibration node inside the workpiece;

[0054] The optical positioning system is the core component of the precise positioning mechanism, and its structure mainly includes a high-resolution industrial camera 230, a structured light projector, an image processing unit, and a positioning algorithm module;

[0055] The high-resolution industrial camera 230 adopts a binocular stereo vision design and is equipped with a macro lens, which can capture the fine structural features of the workpiece cavity; the structured light projector can project a specifically coded structured light pattern into the workpiece cavity to form a three-dimensional spatial reference mark; the image processing unit uses a high-performance image processing chip, which can process the image data collected by the camera in real time; the positioning algorithm module calculates the precise implantation position coordinates of the micro-support element 300 based on the structured light triangulation measurement principle and feature matching algorithm.

[0056] The optical positioning system operates based on structured light 3D reconstruction technology. First, a structured light projector projects a coded grating pattern into the workpiece's cavity, creating deformed light streaks on the surface. A binocular camera then simultaneously captures images of these deformed streaks from different angles. An image processing unit then preprocesses the captured images, including noise filtering, light streak extraction, and code recognition. Subsequently, a positioning algorithm module, based on triangulation principles, analyzes the degree of deformation and positional offset of the light streaks to reconstruct a 3D point cloud model of the workpiece's cavity. Finally, the reconstructed 3D point cloud model is aligned with the workpiece's CAD model, and the key node positions determined by vibration analysis are mapped to the actual workpiece coordinate system to calculate the precise implantation position and posture of the micro-support element 300.

[0057] To improve positioning accuracy, the optical positioning system also utilizes adaptive exposure control technology and a multi-scale feature matching algorithm. Adaptive exposure control automatically adjusts camera parameters based on the reflective properties of the workpiece cavity, ensuring clear images under varying reflective conditions. The multi-scale feature matching algorithm, by matching features at different resolution levels, effectively addresses matching difficulties caused by perspective changes and partial occlusion, thereby improving positioning robustness. The system achieves positioning accuracy of ±0.01mm, meeting the precise implantation requirements for 300 micro-support components.

[0058] In some embodiments, to ensure that the micro-support element 300 does not shift after placement, the micro-support element 300 release mechanism is further provided with a rapid curing glue spraying mechanism 500. The rapid curing glue spraying mechanism 500 includes a spray head 530, a glue tank 520, and a glue pump 510. The glue pump 510 is connected to the spray head 530 and the glue tank 520 via a pipe. After the micro-support element 300 is pneumatically pushed into place, the glue pump 510 pumps the curing glue from the glue tank 520. The spray head 530 automatically sprays a small amount of rapid curing glue on the contact points between the micro-support element 300 and the workpiece cavity, thereby fixing the micro-support element 300 at the key vibration node position in the workpiece cavity and ensuring that the micro-support element 300 remains stable during the subsequent plaster filling process. After the micro-support element 300 is fixed, the entire release mechanism is quickly withdrawn without affecting the subsequent plaster filling process.

[0059] The workpiece vibration analysis module includes a vibration signal acquisition mechanism and a vibration modal analysis system. The vibration signal acquisition mechanism uses highly sensitive accelerometers placed on the workpiece surface to collect vibration data under simulated cutting conditions. Based on the collected vibration signals and combined with finite element analysis, the vibration modal analysis system calculates the locations and vibration characteristics of key nodes where microvibrations may occur during the actual turning process, providing a precise basis for the selection and placement of the micro-support elements 300.

[0060] In some embodiments, the micro-support element 300 is made of a high-rigidity polymer material with a high elastic modulus and a low density, which can provide sufficient support strength without significantly increasing the overall weight of the workpiece.

[0061] In some embodiments, the micro-support element 300 is made of a lightweight metal alloy, such as an aluminum alloy or a titanium alloy, which has higher rigidity and strength and is suitable for precision turning operations requiring extremely high precision.

[0062] In some embodiments, in order to improve the overall synergistic effect of the support system, the outer surface of the micro-support element 300 is designed with a special texture structure, which can enhance the bonding strength with the surrounding gypsum material and form a more solid composite support system.

[0063] In some embodiments, in order to accommodate multi-directional fixed connectors of different shapes and sizes, the micro-support structure implant unit 200 is equipped with a replaceable implant head that can be quickly adjusted according to the specific shape and size of the workpiece cavity, thereby improving adaptability and work efficiency.

[0064] In some embodiments, in order to improve the accuracy of vibration analysis, the workpiece vibration analysis module also includes a cutting force prediction unit, which can predict the size and direction of the cutting force that may be generated at various positions during the turning process based on the workpiece material properties, cutting parameters and tool geometry, and combine the vibration signal analysis results to more accurately determine the position of the key support point.

[0065] Based on the above turning device, the turning device for processing a multi-directional fixed connection provided in this embodiment mainly performs the following steps:

[0066] S1: Workpiece Preparation and Analysis. The multi-directional fixed connector is mounted on the vibration test platform, and the vibration signal acquisition mechanism is activated to simulate the cutting conditions of actual turning operations. The vibration signal acquisition mechanism uses a highly sensitive accelerometer to collect vibration data from the workpiece under different cutting parameters and transmits the data to the vibration modal analysis system.

[0067] S2: Identification of Critical Vibration Nodes. The vibration modal analysis system, combined with finite element analysis, processes the collected vibration signal data and calculates the locations and vibration characteristics of key nodes where microvibration may occur during the turning process. Simultaneously, the cutting force prediction unit predicts the magnitude and direction of the cutting forces likely to be generated at each location based on the workpiece material properties, cutting parameters, and tool geometry. By comprehensively analyzing the vibration modes and cutting force distribution, key locations requiring focused support are identified.

[0068] In one embodiment, the process of analyzing and processing the vibration signal data is as follows:

[0069] The data analysis and processing in this embodiment mainly focuses on the vibration data and cutting force data during the processing of the multi-directional fixed connector, providing a scientific basis for the precise placement of the micro-support element 300. Specifically, the following steps are included:

[0070] S2-1: Collect workpiece vibration signal data. High-sensitivity accelerometers are used to simultaneously collect the workpiece's time-domain vibration signals at multiple preset sampling points under simulated turning conditions. The sampling frequency is 20 kHz, ensuring that high-frequency micro-vibration characteristics are captured.

[0071] S2-2: Process the raw vibration data and eliminate noise interference. Use the wavelet transform algorithm to reduce the noise of the collected raw vibration signal, extract the effective vibration characteristics, and eliminate the interference signals introduced by the environment and the equipment itself.

[0072] S2-3: Calculate the vibration spectrum characteristics. Perform a fast Fourier transform (FFT) on the noise-reduced vibration signal to convert the time domain signal into a frequency domain signal. Generate a spectrum characteristic curve for each sampling point and determine the main vibration frequency and amplitude.

[0073] S2-4: Analyze vibration modal distribution. Based on frequency domain data, use modal analysis algorithms to calculate the workpiece's vibration mode distribution at different frequencies, identify areas of concentrated vibration energy, and generate a three-dimensional vibration modal distribution diagram.

[0074] S2-5: Calculate the locations of key vibration nodes of the workpiece. Based on the vibration modal distribution data, use the peak detection algorithm to locate the coordinates of the points with the maximum vibration amplitude and determine the locations of key vibration nodes that require key support.

[0075] The vibration amplitude is calculated by weighting the amplitudes of each measurement point at different frequencies according to their importance to form a composite amplitude value. The importance weight of a frequency is proportional to the probability of excitation at that frequency during the actual turning process.

[0076] S2-6: Predicting turning force distribution. Based on the workpiece material parameters, tool geometry parameters, and turning process parameters, the modified cutting force prediction model is used to calculate the three-dimensional cutting force distribution during the turning process.

[0077] In the embodiment of the present application, in order to improve the cutting force prediction accuracy, the cutting force prediction model adopts a correction equation that takes into account the nonlinear factors of the material:

[0078] ;

[0079] in, is the main cutting force, is the cutting coefficient, is the cutting depth, is the feed rate, is the cutting speed, and are the influence indexes of feed rate and cutting speed, is the workpiece curvature influence function.

[0080] S2-7: Calculate the comprehensive support demand index. Vibration node data and cutting force distribution data are integrated and analyzed. By establishing a comprehensive vibration-cutting force evaluation function, a support demand index is assigned to each area within the workpiece. A higher index indicates a more urgent need for micro-support in that area.

[0081] The calculation formula for the comprehensive support demand index is:

[0082] ;

[0083] in, For the region Support demand index, is the vibration amplitude of the region, is the cutting force in this area, is the distance from the area to the nearest support point, 、 、 is the weight coefficient, which is adjusted according to different workpiece characteristics and processing requirements.

[0084] S2-8: Optimizing the layout of micro-support elements 300. Based on the support demand index and the workpiece cavity geometry constraints, an improved particle swarm optimization algorithm is used to generate the optimal layout of the micro-support elements 300, including support point locations, support element types, and size parameters.

[0085] In the embodiment of the present application, in order to improve the optimization efficiency, a hierarchical optimization strategy is adopted, first determining the position of the key support points, and then optimizing the parameters of the micro-support element 300 at each support point, which greatly reduces the calculation complexity.

[0086] S2-9: Generate micro-support implantation path planning. Based on the optimized layout and the workpiece cavity structural characteristics, calculate the implantation path of each micro-support element 300 to ensure that the implantation process does not interfere with other implanted micro-support elements 300 and avoids collision with the workpiece inner wall.

[0087] S2-10: Evaluate the predicted support effect data. By building a finite element model containing the micro-support element 300 and the plaster filler material, the turning process is simulated. The dynamic response characteristics of the workpiece after the support is added are calculated, and the machining accuracy and surface quality are predicted to evaluate the effectiveness of the support scheme.

[0088] In some embodiments, in order to adapt to the individual differences of workpieces in different batches, this embodiment also establishes an adaptive data processing mechanism. By comparing the vibration characteristics of the current workpiece with similar workpieces in the historical database, the data analysis model parameters are dynamically adjusted to improve the accuracy and adaptability of the analysis results.

[0089] In some embodiments, in order to improve the real-time performance of data analysis, this embodiment adopts a parallel computing architecture, which distributes computationally intensive tasks such as vibration modal analysis, cutting force prediction, and support optimization to multiple processing units for simultaneous execution, thereby significantly shortening data processing time and meeting production efficiency requirements.

[0090] S3: Micro-support element 300 selection and preparation. Based on the location and vibration characteristics of key vibration nodes, select the appropriate micro-support element 300 type (axial support element 330, radial support element 320, or multi-directional composite micro-support element 310) and size. If existing micro-support elements 300 do not fully meet the requirements, custom micro-support elements 300 with specialized shapes will be prepared based on specific requirements. The selected micro-support elements 300 are pre-treated to ensure a clean surface and good bonding properties.

[0091] S4: Workpiece Fixing and Implantation Preparation. The multi-directional fixed connector is secured using the adjustable jaws and locating pins on the workpiece clamping mechanism 110 of the lathe 100. The jaws, driven by a hydraulic drive, provide continuous and stable clamping force, while the locating pins ensure precise angular positioning of the workpiece, thereby preventing displacement during subsequent operations. Based on the shape and size of the workpiece's internal cavity, an appropriate implant head is selected, mounted on the micro-support structure implant unit 200, and calibrated.

[0092] S5: Precise implantation of the micro-support element 300. The micro-support structure implantation unit 200 is activated, and the mechanical arm 210 of the precise positioning mechanism is moved in coordination with the rotation of the main shaft of the lathe 100. Specifically, the mechanical arm 210 is fixed to the frame of the lathe 100 and can move along the main shaft of the lathe 100. The rotation of the main shaft of the lathe 100 rotates the workpiece to the appropriate angular position. The three-dimensional displacement platform 220 on the mechanical arm 210 provides fine-tuning capabilities in the X, Y, and Z directions. Under the guidance of the optical positioning system, this combined motion method can accurately move the implant device to a predetermined key vibration node position. Specifically, the operation process of the optical positioning system includes: first, activating the structured light projector to project the coded grating pattern into the inner cavity of the workpiece; second, starting the binocular industrial camera to simultaneously capture the deformed light stripe image on the inner cavity surface of the workpiece from different angles; then, the image processing unit processes the acquired image in real time, including noise filtering, light stripe extraction and code recognition; then, the positioning algorithm module reconstructs the three-dimensional point cloud model of the workpiece inner cavity based on the triangulation principle, and aligns it with the workpiece CAD model; finally, the system maps the key node positions determined by the vibration analysis to the actual workpiece coordinate system, calculates the precise implantation position and posture of the micro-support element 300, and transmits these coordinate data to the three-dimensional displacement platform 220 to guide the precise movement of the implant device.

[0093] After optical positioning is complete, the micro-support element 300 release mechanism uses mechanical clamping to deliver the micro-support element 300 to the target position. The pneumatic push mechanism then precisely pushes the micro-support element 300 into position. Simultaneously, the rapid-curing glue spraying mechanism 500 is activated to spray a small amount of rapid-curing glue at the contact points between the micro-support element 300 and the workpiece cavity to secure the micro-support element 300. The clamping mechanism remains in place until the glue initially cures (≥5 seconds). Once curing is complete, the release mechanism withdraws the clamping arm 210 and quickly withdraws, avoiding interference with subsequent implantation and plaster filling. This process is repeated for each critical vibration node until the micro-support element 300 is implanted in all locations requiring support.

[0094] S6: Plaster Material Filling. The plaster injection mechanism 400 is activated, and the pre-prepared fluid plaster material is precisely injected into the inner cavity of the multi-directional fixed connector through the flow control valve 420 and the injection pipe 440. During the injection process, the plaster material gradually fills the entire workpiece cavity, surrounding the implanted micro-support elements 300 and forming a continuous support medium. The injection speed and pressure are precisely controlled to avoid air bubbles and ensure uniform filling.

[0095] S7: Gypsum Curing and Curing. The curing control mechanism is activated to adjust the ambient temperature and humidity to optimal curing conditions. The gypsum material gradually solidifies under controlled conditions, forming an integrated composite support system with the micro-support elements 300. The curing process requires a certain period of time to ensure that the gypsum material achieves sufficient strength and stability.

[0096] S8: Turning preparation: After curing is completed, the turning parameters are set according to the process requirements, including the spindle speed, feed rate, cutting depth, etc. There is no need to reinstall the workpiece because the workpiece is already fixed on the workpiece clamping mechanism 110 of the lathe 100.

[0097] S9: Precision Turning. Lathe 100 is started, and the spindle of lathe 100 drives the workpiece in rotation. During machining, the implanted micro-support elements 300 provide high-rigidity localized support at key vibration nodes, effectively suppressing micro-vibrations. The surrounding plaster filler provides overall stability, jointly ensuring machining accuracy and surface quality.

[0098] S10: Support Material Removal. After the turning process is completed, the workpiece remains fixed to the workpiece clamping mechanism 110 of the lathe 100. First, a gypsum dissolving agent (such as "10% citric acid solution") is injected into the workpiece cavity through a reserved discharge hole to dissolve the gypsum filling material and allow it to flow out of the discharge hole. Then, depending on the material properties of the micro-support elements 300, a specific solvent is used to dissolve polymer micro-support elements 300, while metal micro-support elements 300 are separated from the inner wall by electrolysis or ultrasonic vibration. The micro-support elements 300 are then removed from the workpiece cavity, ensuring that the workpiece itself is not damaged during the removal process.

[0099] S11: Quality Inspection and Evaluation. After support material removal is complete, the multi-directional fixture is removed from the workpiece clamping mechanism 110 of the lathe 100 . The precision and surface quality of the machined multi-directional fixture are inspected to evaluate the support effectiveness of the embedded micro-support structure system. The relevant data is recorded for subsequent process optimization.

[0100] The above describes the embodiments of the present invention, but the present invention is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms under the guidance of the present invention, all of which are protected by the present invention.

Claims

1. A turning device for processing multi-directional fixed connecting parts, characterized in that: The invention comprises a lathe and a basic plaster filling system and an embedded micro-support structure system integrated on the lathe. The workpiece is stably fixed by the workpiece clamping mechanism of the lathe to process a multi-directional fixed connection part. The basic gypsum filling system includes a gypsum injection mechanism and a curing control mechanism. The gypsum injection mechanism is used to inject the flowing gypsum material into the inner cavity of the workpiece. The curing control mechanism is used to adjust the local temperature and humidity of the workpiece filling area so that the gypsum material is cured according to the predetermined time. The embedded micro-support structure system includes a micro-support element, a micro-support structure implantation unit, and a workpiece vibration analysis module. The micro-support structure implantation unit places the micro-support element at the key vibration nodes inside the workpiece. The workpiece vibration analysis module is used to identify the key vibration node locations where micro-vibration occurs during the turning process. The micro-support element is a prefabricated component, and the element types of the micro-support element include axial support type, radial support type and multi-directional composite type; The axial support type micro-support element is in the shape of a slender column and is used to bear and disperse the longitudinal cutting force; Among them, the radial support type micro-support element has a radial or annular structure, which is used to resist radial cutting force and torque; among them, the multi-directional composite micro-support element adopts a grid or honeycomb structure, which can resist cutting forces and vibrations in multiple directions at the same time.

2. A turning device for processing a multi-directional fixed connection according to claim 1, characterized in that: The micro-support structure implantation unit includes a precise positioning mechanism and a micro-support element release mechanism. The precise positioning mechanism includes a robotic arm and a three-dimensional displacement platform. The robotic arm is fixed to the lathe frame to rotate the micro-support element to a suitable angular position. The robotic arm provides fine adjustment in the X, Y, and Z directions and moves the micro-support element to a predetermined position based on the vibration analysis results of the workpiece vibration analysis module. The micro-support element release mechanism uses a combination of mechanical clamping and pneumatic pushing to place the micro-support element on the key vibration node inside the workpiece.

3. A turning device for processing a multi-directional fixed connection according to claim 2, characterized in that: The precise positioning mechanism also includes an optical positioning system, which includes a high-resolution industrial camera, a structured light projector, an image processing unit, and a positioning algorithm module; The high-resolution industrial camera adopts a binocular stereo vision design and is equipped with a macro lens to capture the fine structural features of the workpiece cavity. The structured light projector can project a specifically coded structured light pattern into the workpiece cavity to form a three-dimensional spatial reference mark; the image processing unit processes the image data collected by the camera in real time; the positioning algorithm module calculates the precise implantation position coordinates of the micro-support element based on the structured light triangulation measurement principle and feature matching algorithm.

4. A turning device for machining a multi-directional fixed connection according to claim 3, characterized in that: The steps for precise positioning of the optical positioning system are as follows: The structured light projector projects a coded grating pattern into the inner cavity of the workpiece, and the coded grating pattern forms deformed light stripes on the surface of the inner cavity of the workpiece; The binocular camera captures images of the deformed light stripes from different angles simultaneously; The image processing unit pre-processes the acquired image, including noise filtering, light streak extraction and code recognition; The positioning algorithm module is based on the principle of triangulation. It reconstructs the three-dimensional point cloud model of the workpiece cavity by analyzing the deformation degree and position offset of the light stripes. The reconstructed 3D point cloud model is registered with the workpiece CAD model, and the key node positions determined by vibration analysis are mapped to the actual workpiece coordinate system to calculate the precise implantation position and posture of the micro-support element.

5. A turning device for processing a multi-directional fixed connection piece according to claim 4, characterized in that: The micro-support element release mechanism is also provided with a fast-curing glue spraying mechanism, which includes a spray head, a glue tank and a glue pump. The glue pump is connected to the spray head and the glue tank through a pipe. The glue pump pumps the curing glue out of the glue tank. The spray head automatically sprays a small amount of fast-curing glue on the contact point between the micro-support element and the inner cavity of the workpiece, so that the micro-support element is fixed at the key vibration node position in the inner cavity of the workpiece.

6. A turning device for machining a multi-directional fixed connection according to claim 5, characterized in that: The workpiece vibration analysis module includes a vibration signal acquisition mechanism and a vibration modal analysis system. The vibration signal acquisition mechanism includes a high-sensitivity acceleration sensor arranged on the surface of the workpiece, which collects vibration data of the workpiece under simulated cutting conditions through the high-sensitivity acceleration sensor; Based on the collected vibration data, the vibration modal analysis system calculates the key node positions and vibration characteristics of the workpiece where micro-vibration occurs during the actual turning process.

7. A turning device for machining a multi-directional fixed connection piece according to claim 6, characterized in that: The gypsum injection mechanism includes a gypsum storage container, a flow control valve, an injection pump and an injection pipe. The gypsum storage container and the flow control valve are connected by the injection pipe. The injection pump is used to accurately inject the flowing gypsum material into the inner cavity of the workpiece.

8. A turning device for machining a multi-directional fixed connection piece according to claim 7, characterized in that: The micro-support element is made of a high-rigidity polymer material or a light metal alloy, and the outer surface of the micro-support element is provided with a texture structure.

9. A turning device for machining a multi-directional fixed connection piece according to claim 8, characterized in that: The workpiece clamping mechanism includes a clamping jaw group and a positioning pin group. The clamping jaw group is driven by hydraulic pressure to provide clamping force and maintain the clamping state. The positioning pin group is used to accurately locate the angular position of the workpiece.

10. A turning device for machining a multi-directional fixed connection piece according to claim 9, characterized in that: To accommodate multi-directional fixed connectors of different shapes and sizes, the micro-support structure implant unit is equipped with a replaceable implant head that can be quickly adjusted according to the specific shape and size of the workpiece cavity.

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