Circular arc end tooth rounding and chamfering machining method and system

Abstract

The invention provides a circular arc end tooth rounding and chamfering processing method and system, and relates to the technical field of machining, the method comprises the following steps: installing a high-precision measuring head in a five-axis numerical control processing center, planning an outer circle, an inner circle and tooth end face measuring program by self-adaptive software QJCAM according to an end tooth solid model, obtaining point data through contact measurement, and obtaining a chamfering result; leveling and aligning the end teeth, determining the angular position, and updating a machining coordinate system; after a part position is calibrated, the QJCAM generates a rounding adjacent surface feature program, a measurement path is planned based on a new coordinate system, a result is analyzed after operation, and an end tooth model matched with the size of a real object is fitted according to returned data through a specific algorithm; the QJCAM maps an original tool path to a new model, a new tool path is generated through self-adaptive adjustment according to geometric features and precision requirements of the model, a five-axis machining path is precisely controlled, high-precision, high-efficiency and intelligent rounding and chamfering machining is achieved, and it is ensured that the tool path is smooth and precise. High-efficiency and intelligent machining is achieved, and the method is suitable for machining of key components such as aero-engines.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to a method and system for processing rounding and chamfering of arc end teeth. Background Art

[0002] Among the key components of aircraft engine turbine rotors, turbine discs, compressor discs and turbine blades play a vital role. These components rotate continuously at high speeds under high temperature, high pressure and complex dynamic load conditions, and the working environment is extremely harsh.

[0003] The cooperation between the arc end teeth of the turbine disk and the gear constitutes a key part of the transmission structure of the aircraft engine; at the same time, the precise cooperation between the tenon groove of the turbine disk and the compressor disk and the tenon of the blade cannot be ignored. However, due to the complex and diverse force conditions of the blade during operation, in the process of interaction between the tenon groove of the disk and the tenon of the blade, the edges of the tenon groove of the turbine disk and the compressor disk and the tenon edge of the blade become weak areas where stress concentration is very likely to occur.

[0004] In order to give full play to the functions of each part and ensure the stability and reliability of the overall performance of the product, after the parts have obtained the specified dimensional accuracy and geometric accuracy, if their surface quality has not yet met the standards, further relevant work is still required. This mainly involves operations such as removing burrs, flash, and knife marks, with the aim of reducing the roughness value of the part surface, improving the distribution of surface stress, and eliminating various defects remaining on the part surface. It is worth noting that if the rounding and chamfering process is not standardized, irregularities occur, or there are defects such as sharp corners, steps, and missing materials, then when the parts are under high load operation, cracks are very likely to occur due to excessive local stress concentration, which poses a serious threat to the safe operation of aircraft engines.

[0005] In the prior art, there are mainly two methods for rounding the grooves, end teeth and edges of parts such as turbine disks, compressor disks, and turbine blades:

[0006] First, the traditional manual operation method of benchwork has been widely used for a long time. This method is highly dependent on the operator's personal skill level, has great labor intensity, and has low processing efficiency. During manual operation, since it is difficult for the operator to detect the slight tremor of the wrist, this will have an adverse effect on the processing direction of the rotary file head, and it is easy to produce scratches when processing key parts of the surface such as mortise and tenon, end teeth, etc. In addition, sometimes the file may penetrate too deep into the surface of the part, thereby damaging the surface of the part and causing scratches, which are all collateral damage. Especially when there are a large number of mortises and end teeth, such damage marks are difficult to be discovered in time, which will directly lead to unstable surface quality and poor consistency of the parts. Moreover, after shot peening, this surface defect is prone to cause stress concentration, posing a great hidden danger to the flight safety of the engine.

[0007] Secondly, there are some chamfering machines on the market, such as tenon chamfering machines, turbine disc chamfering machines, etc. These machines usually adopt semi-automatic cycle mode, and their worktables can perform different feeding operations. The feeding method can be either tool feeding or workpiece feeding according to actual needs. However, the processing accuracy of this type of machine tool is difficult to meet high-precision requirements. When the part size accuracy requirements are high, the processing effect cannot reach the ideal state and cannot effectively meet the use requirements.

[0008] In summary, the prior art has many deficiencies in the rounding and chamfering of arc-end gear parts, and there is an urgent need for a more efficient, accurate and reliable processing method and system to solve these problems, which also lays a realistic foundation for the proposal of the present invention. Summary of the invention

[0009] To this end, an embodiment of the present invention provides a method and system for processing arc end tooth rounding and chamfering, which is used to solve the problems of difficult processing, inaccurate processing and low processing efficiency of rounding and chamfering of arc end tooth parts in the prior art.

[0010] In order to solve the above problems, an embodiment of the present invention provides a method for rounding and chamfering arc end teeth, the method comprising:

[0011] S1: Install a high-precision probe on the five-axis CNC machining center, plan and generate a measurement program for the end tooth outer circle, inner circle, and tooth end face features through the adaptive software QJCAM, run the program to obtain measurement point data in a contact measurement manner, automatically level and align the end tooth according to the measurement point data, and determine the precise angular position, and update the original machining coordinate system, wherein the planning of the measurement program is based on the physical model of the end tooth in the adaptive software platform, and includes planning a suitable alignment measurement path;

[0012] S2: After the part position is calibrated, the adaptive software QJCAM is used to generate a program for measuring the adjacent surface features of the end teeth that need to be chamfered. The measurement results are analyzed and a specific data processing algorithm is used in the software to fit and generate an end tooth model that is more consistent with the actual size of the product. The operation of this program requires planning a suitable end tooth chamfer adjacent surface measurement path based on the new machining coordinate system. The five-axis CNC machining center runs this path program and returns the measurement point data to the software. The software automatically fits and generates an end tooth adjacent surface model based on these data.

[0013] S3: The original machining tool path is mapped to the newly generated end tooth model through the adaptive software QJCAM to generate a new adaptive chamfering tool path, realize the precise control of the five-axis machining path, and complete the high-precision, high-efficiency, and intelligent chamfering and rounding machining of arc end teeth. In the mapping process, the original tool path is adaptively adjusted according to the geometric features of the end tooth model and the machining accuracy requirements to ensure the smooth transition and precise machining of the tool path.

[0014] Preferably, in step S1, after the end gear part is clamped to the five-axis CNC machining center, the center is roughly found through the machine tool's built-in centering program, and then the software's measurement program is run to automatically return the measurement point data. The measurement point data is then substituted into the position alignment algorithm to calculate the rigid body transformation of the part from the current actual clamping position to the desired theoretical clamping position, and a new machining coordinate system is generated.

[0015] Preferably, in step S2, the specific data processing algorithm includes but is not limited to the least squares method and the cubic spline interpolation algorithm, which are used to improve the fitting accuracy between the end tooth model and the actual size.

[0016] Preferably, in step S3, when a new adaptive filleting and chamfering tool path is generated, the feed speed and cutting depth of the tool can be automatically adjusted according to the surface curvature change of the end tooth model, while optimizing the tool path, reducing the processing time and improving the processing surface quality.

[0017] The embodiment of the present invention further provides a circular arc end tooth chamfering processing system, which is used to implement the circular arc end tooth chamfering processing method described above, specifically comprising:

[0018] The measuring and positioning unit is used to obtain the measuring point data of the end teeth by contact measurement through the high-precision probe installed on the five-axis CNC machining center and the measuring program planned by the adaptive software QJCAM, and automatically level and align the end teeth and determine the precise angular position. The unit plans the alignment measurement path based on the end tooth solid model, and after the part is clamped, the center is roughly found using the machine tool's own centering program, and then the measuring program is run to return the measuring point data, and a new machining coordinate system is calculated and generated through the position registration algorithm;

[0019] The model generation unit is used to generate a program for measuring the adjacent surface features of the end teeth that need to be chamfered through the adaptive software QJCAM after the part position is calibrated, analyze the measurement results, and use a specific data processing algorithm to fit and generate an end tooth model that is more consistent with the actual size of the product. The unit plans the measurement path of the end tooth chamfer adjacent surface based on the new machining coordinate system, receives the measurement point data returned by the machining center, and automatically fits and generates the end tooth adjacent surface model;

[0020] The tool path optimization unit is used to map the original machining tool path to the newly generated end gear model, and adaptively adjust and generate a new chamfering tool path according to the geometric characteristics and machining accuracy requirements of the end gear model to achieve precise control of the machining path. During the mapping process, the tool feed speed and cutting depth are automatically adjusted according to the surface curvature changes of the end gear model, and the tool path is optimized at the same time;

[0021] The machining control unit is used to control the five-axis CNC machining center to perform machining according to the adaptive chamfering tool path generated by the tool path optimization unit, and complete the chamfering and rounding operation of the arc end teeth. The unit has the function of real-time monitoring of the machining status, and can monitor the tool wear, cutting force and other parameters during the machining process, and make adjustments or alarms according to the preset thresholds;

[0022] The data storage unit is used to store measurement point data, end tooth model data, machining tool path data and various monitoring data during the machining process for subsequent analysis and tracing. The stored data format adopts a standardized format to facilitate data reading and sharing.

[0023] Preferably, the high-precision probe in the measuring and positioning unit has micron-level measurement accuracy and high repeatability accuracy, and its measurement range covers various characteristic dimensions of end teeth, and can adapt to the measurement of end teeth of different materials and surface roughness.

[0024] Preferably, the specific data processing algorithm in the model generation unit has adjustable parameters and can be optimized according to different end tooth product requirements to improve the accuracy and versatility of model generation.

[0025] Preferably, when generating a new chamfering tool path, the tool path optimization unit can preset and select different types of end tooth processing processes to meet diverse processing requirements, and at the same time has tool path simulation and verification functions to ensure the feasibility and safety of the generated tool path.

[0026] Preferably, the processing control unit can communicate with external equipment to achieve remote monitoring and operation, and supports multi-task processing mode, which can handle the processing tasks of multiple end gear parts at the same time, thereby improving processing efficiency.

[0027] Preferably, the system also includes a user interface unit for the operator to input processing parameters and view processing status and data. The user interface unit has an intuitive and friendly operation interface and supports graphical display of end tooth models, processing tool paths and monitoring data during the processing, which is convenient for the operator to operate and monitor.

[0028] It can be seen from the above technical solutions that the present invention has the following beneficial effects:

[0029] (1) High precision: Using high-precision probes and adaptive software QJCAM, we can obtain accurate measurement data, generate precise end gear models, map machining tool paths, strictly control each link, effectively solve the problem of inaccurate machining, significantly improve product quality, and meet the high-precision requirements of high-end fields.

[0030] (2) High efficiency: Adopting adaptive processing scheme and software automatic data processing to replace traditional processing methods, reduce manual operation, reduce labor intensity, optimize processing path, shorten processing time, and is suitable for mass production.

[0031] (3) Intelligence: The adaptive software QJCAM runs through the entire processing process to achieve automatic control, from end tooth positioning to model generation and tool path adjustment. The processing control unit monitors parameters in real time and makes intelligent adjustments to ensure stable and safe processing and improve processing reliability and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the implementation cases of the present invention or the technical solutions in the prior art, the following is a brief description of the drawings required for use in the embodiments. By referring to the drawings, the features and advantages of the present invention will be more clearly understood. The drawings are schematic and should not be understood as limiting the present invention in any way. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0033] Figure 1 It is a flow chart of a method for rounding and chamfering arc end teeth provided in an embodiment;

[0034] Figure 2 It is a block diagram of a circular arc end tooth chamfering processing system provided in an embodiment. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Embodiment 1

[0037] In order to solve the problems of difficult processing, inaccurate processing and low processing efficiency of rounded corners of arc end gear parts in the prior art. Figure 1 As shown, an embodiment of the present invention provides a method for rounding and chamfering arc end teeth, the method comprising:

[0038] S1: Install a high-precision probe on the five-axis CNC machining center, plan and generate a measurement program for the end tooth outer circle, inner circle, and tooth end face features through the adaptive software QJCAM, run the program to obtain measurement point data in a contact measurement manner, automatically level and align the end tooth according to the measurement point data, and determine the precise angular position, and update the original machining coordinate system, wherein the planning of the measurement program is based on the physical model of the end tooth in the adaptive software platform, and includes planning a suitable alignment measurement path;

[0039] S2: After the part position is calibrated, the adaptive software QJCAM is used to generate a program for measuring the adjacent surface features of the end teeth that need to be chamfered. The measurement results are analyzed and a specific data processing algorithm is used in the software to fit and generate an end tooth model that is more consistent with the actual size of the product. The operation of this program requires planning a suitable end tooth chamfer adjacent surface measurement path based on the new machining coordinate system. The five-axis CNC machining center runs this path program and returns the measurement point data to the software. The software automatically fits and generates an end tooth adjacent surface model based on these data.

[0040] S3: The original machining tool path is mapped to the newly generated end tooth model through the adaptive software QJCAM to generate a new adaptive chamfering tool path, realize the precise control of the five-axis machining path, and complete the high-precision, high-efficiency, and intelligent chamfering and rounding machining of arc end teeth. In the mapping process, the original tool path is adaptively adjusted according to the geometric features of the end tooth model and the machining accuracy requirements to ensure the smooth transition and precise machining of the tool path.

[0041] From the above technical scheme, it can be seen that the present invention proposes a method for rounding and chamfering of arc end teeth, which is carried out in a five-axis CNC machining center, and a high-precision probe is installed. The adaptive software QJCAM plans the measurement program based on the end tooth solid model, obtains data by contact measurement, and level and align the end teeth and determine the angular position accordingly, and updates the machining coordinate system. The intervention of the software in this process ensures the accuracy of the operation, effectively solves the problem of inaccurate machining, and realizes high-precision machining. Then, after the part position is calibrated, QJCAM generates a joint surface feature program, plans the path based on the new coordinate system and runs it, the software analyzes the measurement results, and fits a more physical end tooth model through a specific algorithm. This intelligent data processing method avoids manual operation errors and improves efficiency. Finally, the original tool path is mapped to the new model, and the new tool path is adaptively adjusted and generated according to its geometric features and precision requirements to achieve precise control of the machining path. During the whole process, the software intelligently optimizes the tool path to ensure smooth transition, reduce machining time and avoid stress concentration, and realizes high-efficiency and intelligent machining, which is suitable for the machining of key components such as aircraft engines.

[0042] In this embodiment, first, a high-precision probe is installed on the five-axis CNC machining center. The probe has a micron-level accuracy, and the measurement range fully covers all kinds of characteristic dimensions of the end teeth. It has high repeatability accuracy and can adapt to the measurement of end teeth with different materials and surface roughness. The solid model of the end teeth is imported into the adaptive software QJCAM platform, and the appropriate alignment measurement path is carefully planned in the platform according to the outer circle, inner circle, tooth end face and other features of the end teeth.

[0043] Clamp the end gear part onto the five-axis CNC machining center, and start the machine's built-in centering program to perform a rough centering operation. Then run the measurement program planned by the software. At this time, the probe measures the characteristic points of the end gear along the planned path in a contact measurement manner, obtains accurate measurement point data, and automatically transmits it back to the QJCAM software. Substitute the measurement point data into the position registration algorithm, which comprehensively considers multiple factors such as the spatial distribution and geometric relationship of the measurement points, and calculates the rigid body transformation of the part from the current actual clamping position to the expected theoretical clamping position, thereby generating a new machining coordinate system.

[0044] In this embodiment, based on the newly generated machining coordinate system, the measurement path of the end tooth chamfer adjacent surface is planned in the QJCAM software. This path planning fully considers the geometric shape of the adjacent surface and the positional relationship with other features to ensure that comprehensive and accurate measurement data is obtained. The five-axis CNC machining center runs the program, measures the end tooth chamfer adjacent surface, obtains the measurement point data and transmits it back to the software.

[0045] The software uses specific data processing algorithms, such as the least squares method, cubic spline interpolation algorithm, etc. (these algorithms can be selected or used in combination according to actual needs) to analyze the measurement point data. By minimizing the sum of square errors between the measurement points and the fitting curve or surface, an end tooth model that is more consistent with the actual size of the product is accurately fitted. The model can accurately reflect the actual shape of the end tooth and provide an accurate geometric basis for subsequent tool path generation.

[0046] In this embodiment, the QJCAM software maps the original machining tool path to the newly generated end tooth model. During the mapping process, the original tool path is adaptively adjusted according to the geometric features of the end tooth model, such as the change in tooth surface curvature, the transition of tooth root fillet, etc., as well as the pre-set machining accuracy requirements. In areas with large tooth surface curvature, the tool feed speed is automatically reduced, the cutting depth is refined, and the machining accuracy is ensured; in areas with gentle curvature, the machining efficiency is reasonably improved. At the same time, the tool path is optimized, unnecessary idle strokes and tool reversal times are reduced, so that the tool movement is smoother and more efficient, and finally a new adaptive chamfering tool path is generated.

[0047] In this embodiment, the five-axis CNC machining center runs the generated adaptive chamfering tool path for machining. The machining control unit monitors the machining status in real time during the machining process, and obtains parameters such as tool wear and cutting force through various sensors such as force sensors and displacement sensors installed on the machine tool. When the tool wear reaches the preset threshold, the machine tool is controlled to suspend machining and prompt the operator to replace the tool; if the cutting force exceeds the safe range, the tool feed speed or cutting depth is adjusted in time to ensure the stability and safety of the machining process, and to achieve high-precision, high-efficiency, and intelligent machining of arc end tooth chamfering and rounding.

[0048] Embodiment 2

[0049] like Figure 2 As shown, the present invention provides a circular arc end tooth chamfering processing system, which is used to implement the circular arc end tooth chamfering processing method of the above-mentioned embodiment 1, and specifically includes:

[0050] The measuring and positioning unit is used to obtain the measuring point data of the end teeth by contact measurement through the high-precision probe installed on the five-axis CNC machining center and the measuring program planned by the adaptive software QJCAM, and automatically level and align the end teeth and determine the precise angular position. The unit plans the alignment measurement path based on the end tooth solid model, and after the part is clamped, the center is roughly found using the machine tool's own centering program, and then the measuring program is run to return the measuring point data, and a new machining coordinate system is calculated and generated through the position registration algorithm;

[0051] The model generation unit is used to generate a program for measuring the adjacent surface features of the end teeth that need to be chamfered through the adaptive software QJCAM after the part position is calibrated, analyze the measurement results, and use a specific data processing algorithm to fit and generate an end tooth model that is more consistent with the actual size of the product. The unit plans the measurement path of the end tooth chamfer adjacent surface based on the new machining coordinate system, receives the measurement point data returned by the machining center, and automatically fits and generates the end tooth adjacent surface model;

[0052] The tool path optimization unit is used to map the original machining tool path to the newly generated end gear model, and adaptively adjust and generate a new chamfering tool path according to the geometric characteristics and machining accuracy requirements of the end gear model to achieve precise control of the machining path. During the mapping process, the tool feed speed and cutting depth are automatically adjusted according to the surface curvature changes of the end gear model, and the tool path is optimized at the same time;

[0053] The machining control unit is used to control the five-axis CNC machining center to perform machining according to the adaptive chamfering tool path generated by the tool path optimization unit, and complete the chamfering and rounding operation of the arc end teeth. The unit has the function of real-time monitoring of the machining status, and can monitor the tool wear, cutting force and other parameters during the machining process, and make adjustments or alarms according to the preset thresholds;

[0054] The data storage unit is used to store measurement point data, end tooth model data, machining tool path data and various monitoring data during the machining process for subsequent analysis and tracing. The stored data format adopts a standardized format to facilitate data reading and sharing.

[0055] Specifically, the high-precision probe in the measurement and positioning unit works in conjunction with the five-axis CNC machining center. Based on the alignment measurement path planned on the QJCAM platform based on the end gear solid model, the probe measures the end gear under the control of the machining center. After the part is clamped, the center is roughly found by the machine tool's own centering program, and then the measurement program is run. The probe obtains the measurement point data and transmits it back. The position registration algorithm in the software uses this data to calculate the rigid body transformation and generate a new machining coordinate system, providing an accurate benchmark for subsequent processing and ensuring the accuracy and consistency of the entire processing process.

[0056] Specifically, after the machining coordinate system is updated, the model generation unit plans the end tooth chamfer adjacent surface measurement path in the QJCAM software based on the new coordinate system. The path is optimized to fully cover the key feature points of the adjacent surface. The five-axis CNC machining center measures and transmits data based on this path. The unit uses a specific data processing algorithm (with adjustable parameters to meet different product requirements) to process the data, and generates an end tooth model that is highly consistent with the actual size through complex calculations and fitting, providing a reliable basis for tool path generation.

[0057] Specifically, when the tool path optimization unit maps the original machining tool path to the end gear model, its intelligent algorithm deeply analyzes the model's geometric features (such as tooth surface curvature changes, tooth root fillet, etc.) and machining accuracy requirements (such as surface roughness, dimensional tolerance, etc.). Based on this, the tool feed speed and cutting depth are dynamically adjusted, and machining is finely controlled in complex curvature areas, and efficiency is improved in simple areas. The tool path is optimized to reduce unnecessary movement, ensure smooth and continuous tool paths, avoid machining vibration and impact, and generate high-quality adaptive chamfering tool paths.

[0058] Specifically, the machining control unit is closely connected to the five-axis CNC machining center, and controls the machining process to execute according to the adaptive chamfering tool path. The machining status is monitored by real-time acquisition of sensor data, and the machining is adjusted or suspended in time when the tool is worn or the cutting force is abnormal to ensure machining accuracy and stability. The unit supports multi-task machining mode, reasonably dispatches resources, improves machining efficiency, and also has communication functions, which can realize remote monitoring and operation, making it convenient for technicians to manage.

[0059] Specifically, the data storage unit uses a large-capacity, high-speed storage device to store measurement point data, end tooth model data, machining tool path data, and machining process monitoring data (such as tool wear, cutting force change data, etc.) in a standardized format. During machining, data is received and stored in categories in real time, providing historical records for the current machining, facilitating query and analysis, and also providing a reference for the machining of similar products, which helps to optimize the process and trace quality issues.

[0060] In addition, the system also includes a user interface unit, which provides an intuitive and friendly operating interface for operators. Operators can input processing parameters (such as processing technology type, precision requirements, tool parameters, etc.) through this interface. During processing, the interface displays the end tooth model, processing tool path and monitoring data in a graphical way (such as a three-dimensional view showing the model and processing parts, and a chart showing the monitoring data trend, etc.), which is convenient for operators to observe the processing progress, predict problems, grasp the status and make adjustments. At the same time, operation guides, help documents and error prompts are provided to help operators operate proficiently.

[0061] Through the above specific implementation methods, the arc end tooth rounding and chamfering method and system of the present invention can effectively solve the problems existing in the prior art, realize high-precision, high-efficiency and intelligent arc end tooth processing, and have important application value in high-end manufacturing fields such as aircraft engines. In the actual application process, the parameters of each step and unit can be further optimized and adjusted according to the specific processing requirements and equipment conditions to achieve the best processing effect and meet different production requirements.

[0062] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0063] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0064] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide for implementing the process in the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0065] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention.

Claims

1. A method for rounding and chamfering arc end teeth, characterized in that: include: S1: Install a high-precision probe on the five-axis CNC machining center, plan and generate a measurement program for the end tooth outer circle, inner circle, and tooth end face features through the adaptive software QJCAM, run the program to obtain measurement point data in a contact measurement manner, automatically level and align the end tooth according to the measurement point data, and determine the precise angular position, and update the original machining coordinate system, wherein the planning of the measurement program is based on the physical model of the end tooth in the adaptive software platform, and includes planning a suitable alignment measurement path; S2: After the part position is calibrated, the adaptive software QJCAM is used to generate a program for measuring the adjacent surface features of the end teeth that need to be chamfered. The measurement results are analyzed and a specific data processing algorithm is used in the software to fit and generate an end tooth model that is more consistent with the actual size of the product. The operation of this program requires planning a suitable end tooth chamfer adjacent surface measurement path based on the new machining coordinate system. The five-axis CNC machining center runs this path program and returns the measurement point data to the software. The software automatically fits and generates an end tooth adjacent surface model based on these data. S3: The original machining tool path is mapped to the newly generated end tooth model through the adaptive software QJCAM to generate a new adaptive chamfering tool path, realize the precise control of the five-axis machining path, and complete the high-precision, high-efficiency, and intelligent chamfering and rounding machining of arc end teeth. In the mapping process, the original tool path is adaptively adjusted according to the geometric features of the end tooth model and the machining accuracy requirements to ensure the smooth transition and precise machining of the tool path.

2. The method for rounding and chamfering arc end teeth according to claim 1, characterized in that: In step S1, after the end gear part is clamped to the five-axis CNC machining center, the center is roughly found through the machine tool's built-in centering program, and then the software's measurement program is run to automatically send back the measurement point data. The measurement point data is then substituted into the position alignment algorithm to calculate the rigid body transformation of the part from the current actual clamping position to the desired theoretical clamping position, and a new machining coordinate system is generated.

3. The method for rounding and chamfering arc end teeth according to claim 1, characterized in that: In step S2, the specific data processing algorithm includes but is not limited to the least squares method and the cubic spline interpolation algorithm, which is used to improve the fitting accuracy between the end tooth model and the actual size.

4. The method for rounding and chamfering arc end teeth according to claim 1, characterized in that: In step S3, when a new adaptive chamfering tool path is generated, the feed speed and cutting depth of the tool can be automatically adjusted according to the surface curvature change of the end tooth model, while optimizing the tool path, reducing the processing time and improving the processing surface quality.

5. A circular arc end tooth chamfering processing system, characterized in that: The system is used to implement the arc end tooth rounding and chamfering processing method according to any one of claims 1 to 4, specifically comprising: The measuring and positioning unit is used to obtain the measuring point data of the end teeth by contact measurement through the high-precision probe installed on the five-axis CNC machining center and the measuring program planned by the adaptive software QJCAM, and automatically level and align the end teeth and determine the precise angular position. The unit plans the alignment measurement path based on the end tooth solid model, and after the part is clamped, the center is roughly found using the machine tool's own centering program, and then the measuring program is run to return the measuring point data, and a new machining coordinate system is calculated and generated through the position registration algorithm; The model generation unit is used to generate a program for measuring the adjacent surface features of the end teeth that need to be chamfered through the adaptive software QJCAM after the part position is calibrated, analyze the measurement results, and use a specific data processing algorithm to fit and generate an end tooth model that is more consistent with the actual size of the product. The unit plans the measurement path of the end tooth chamfer adjacent surface based on the new machining coordinate system, receives the measurement point data returned by the machining center, and automatically fits and generates the end tooth adjacent surface model; The tool path optimization unit is used to map the original machining tool path to the newly generated end gear model, and adaptively adjust and generate a new chamfering tool path according to the geometric characteristics and machining accuracy requirements of the end gear model to achieve precise control of the machining path. During the mapping process, the tool feed speed and cutting depth are automatically adjusted according to the surface curvature changes of the end gear model, and the tool path is optimized at the same time; The machining control unit is used to control the five-axis CNC machining center to perform machining according to the adaptive chamfering tool path generated by the tool path optimization unit, and complete the chamfering and rounding operation of the arc end teeth. The unit has the function of real-time monitoring of the machining status, and can monitor the tool wear, cutting force and other parameters during the machining process, and make adjustments or alarms according to the preset thresholds; The data storage unit is used to store measurement point data, end tooth model data, machining tool path data and various monitoring data during the machining process for subsequent analysis and tracing. The stored data format adopts a standardized format to facilitate data reading and sharing.

6. The arc end tooth chamfering processing system according to claim 5, characterized in that: The high-precision probe in the measuring and positioning unit has micron-level measurement accuracy and high repeatability accuracy. Its measurement range covers various characteristic dimensions of end teeth and can adapt to the measurement of end teeth of different materials and surface roughness.

7. The arc end tooth chamfering processing system according to claim 5, characterized in that: The specific data processing algorithm in the model generation unit has adjustable parameters and can be optimized according to different end gear product requirements to improve the accuracy and versatility of model generation.

8. The arc end tooth chamfering processing system according to claim 5, characterized in that: When generating a new chamfering tool path, the tool path optimization unit can preset and select different types of end tooth processing processes to meet diverse processing needs. It also has tool path simulation and verification functions to ensure the feasibility and safety of the generated tool path.

9. The arc end tooth chamfering processing system according to claim 5, characterized in that: The processing control unit can communicate with external equipment to achieve remote monitoring and operation, and supports multi-task processing mode, which can handle the processing tasks of multiple end gear parts at the same time, thereby improving processing efficiency.

10. The arc end tooth rounding and chamfering processing system according to claim 5, characterized in that: The system also includes a user interface unit for operators to input processing parameters and view processing status and data. The user interface unit has an intuitive and friendly operation interface and supports graphical display of end tooth models, processing tool paths and monitoring data during the processing, which is convenient for operators to operate and monitor.

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