In-process evaluation method for initial machining state of a part and related device

Abstract

The application discloses a kind of in-machine evaluation methods of the initial processing state of part and related devices, method includes: establishing the initial workpiece coordinate system of part detection;Collect the end face height coordinate value and installation circle position coordinate value of fixture;Sort and compare end face height coordinate value and radius value, output the end face runout value of fixture, circle runout value and corresponding angular direction;Collect the reference end face height coordinate value and reference circle position coordinate value of part;Calculate the radius value of reference circle, sort and compare reference end face height coordinate value and the radius value of reference circle, output the end face runout value of part, circle runout value and corresponding angular direction;Compare the end face runout value and circle runout value of part with pre-set allowable range value;If meet subsequent processing;If not, compare the runout angular direction of part and fixture, judge whether in same angular direction, according to the output alarm information of judging result.The application improves the influence of part clamping state and part individual difference on machining precision, improves reliability.

Description

Technical Field

[0001] This invention belongs to the field of machining technology, specifically relating to an in-machine evaluation method and related apparatus for the initial machining state of a part. Background Technology

[0002] Disc and ring components in aero-engines are among the core components, responsible for supporting and transmitting torque. These components must meet the demands of extreme operating conditions, including high temperature, high speed, and high precision. Therefore, they are typically made from difficult-to-machine materials such as high-temperature alloys, powder metallurgy high-temperature alloys, and titanium alloys. Due to factors such as high initial internal stress in the raw materials, deformation from previous machining processes, and fixture installation errors, the runout of the reference circle and end face of the component needs to be detected and controlled within a certain error range before machining to ensure the dimensional control requirements of subsequent machining. However, currently, the runout of disc and ring components in aero-engines is generally evaluated by workers using dial indicators. This excessive human intervention in the machining process may affect the accuracy of the tooling, and the operation is relatively cumbersome. The effectiveness and reliability of autonomous evaluation need further improvement. Summary of the Invention

[0003] This invention provides an in-machine evaluation method and related apparatus for the initial machining state of parts. The purpose is to solve the problems that currently, for disc and ring-type parts of aero engines, the evaluation of tooling and part runout is generally carried out by workers using dial gauges. This method involves too much human intervention in the machining process, which may affect the accuracy of tooling. The operation process is relatively cumbersome, and the effectiveness and reliability of autonomous evaluation need to be further improved.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: This invention provides an in-machine evaluation method for the initial machining state of a part, comprising the following steps: S1. Based on the clamping position of the fixture for the part to be tested, establish the initial workpiece coordinate system for part inspection; collect the end face height coordinate value and mounting circle position coordinate value of the fixture for the part to be tested through the in-machine probe; S2. Calculate the radius of the mounting circle based on the coordinates of the mounting circle position, sort and compare the end face height coordinates and radius values, and output the end face runout, circular runout and corresponding angular values ​​of the fixture of the part to be measured. S3. When the part to be tested is installed in the fixture, the reference end face height coordinate value and reference circle position coordinate value of the part to be tested are collected by the in-machine probe; the radius value of the reference circle is calculated based on the reference circle position coordinate value, and the reference end face height coordinate value and the radius value of the reference circle are sorted and compared, and the end face runout value, circle runout value and corresponding angular direction of the part to be tested are output. S4. Compare the end face runout and circular runout of the part to be tested with the preset allowable range values. If the preset allowable range values ​​are met, proceed with subsequent processing. If the preset allowable range values ​​are not met, compare the runout angle of the part to be tested and the fixture of the part to be tested to determine whether they are in the same angle direction. Output alarm information according to the judgment result to complete the on-machine evaluation of the initial processing state of the part.

[0005] In some implementations, in S1, the initial workpiece coordinate system is established by attaching the in-machine probe coordinate system to the fixture of the part to be measured.

[0006] In some implementations, in S1 and S3, the end face height coordinates and mounting circle position coordinates of the fixture for the part under test are acquired by multiple measurement points evenly distributed on the fixture for the part under test; the reference end face height coordinates and reference circle position coordinates of the part under test are acquired by multiple measurement points evenly distributed on the part under test.

[0007] Furthermore, in S1 and S3, the number and distribution density of multiple measurement points are set according to the rigidity of the fixture or the part under test.

[0008] In some implementations, the sorting comparison in S2 and S3 is performed using the bubble sort algorithm.

[0009] In some implementations, in S2 and S3, the end face runout of the fixture for the part under test is the difference between the maximum and minimum values ​​of the end face height coordinates, and the circular runout of the fixture for the part under test is the difference between the maximum and minimum values ​​of the radius of the mounting circle; the end face runout of the part under test is the difference between the maximum and minimum values ​​of the reference end face height coordinates, and the circular runout of the part under test is the difference between the maximum and minimum values ​​of the radius of the reference circle.

[0010] In some implementations, in S4, determining whether they are in the same angular direction includes: comparing whether the runout angular direction of the part under test is consistent with the runout angular direction of the fixture for the part under test; the alarm information includes a first alarm information for indicating the accumulation of error in the fixture for the part under test and a second alarm information for indicating that the runout of the part under test exceeds the tolerance.

[0011] This invention also provides a system for in-machine evaluation of the initial machining state of a part. The system implements the aforementioned in-machine evaluation method for the initial machining state of a part. The system includes an initial workpiece coordinate system module, a fixture parameter output module for the part under test, a parameter output module for the part under test, and an in-machine evaluation module; wherein: Initial workpiece coordinate system module: used to establish the initial workpiece coordinate system for part inspection based on the clamping position of the fixture of the part to be tested; and to collect the end face height coordinate value and mounting circle position coordinate value of the fixture of the part to be tested through the in-machine probe; The parameter output module for the fixture of the part under test is used to calculate the radius value of the mounting circle based on the coordinate value of the mounting circle position, sort and compare the end face height coordinate value and the radius value, and output the end face runout value, circular runout value and corresponding angular direction of the fixture of the part under test; The parameter output module for the part under test is used to collect the reference end face height coordinates and reference circle position coordinates of the part under test through the in-machine probe when the part under test is installed in the part under test fixture; calculate the radius of the reference circle based on the reference circle position coordinates; sort and compare the reference end face height coordinates and the radius of the reference circle; and output the end face runout value, circular runout value and corresponding angular direction of the part under test. In-machine evaluation module: Used to compare the end face runout and circular runout of the part under test with the preset allowable range values; if the preset allowable range values ​​are met, subsequent processing is performed; if the preset allowable range values ​​are not met, the runout angle of the part under test and the fixture of the part under test are compared to determine whether they are in the same angle direction, and alarm information is output according to the judgment result to complete the in-machine evaluation of the initial processing state of the part.

[0012] The present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to perform the in-machine evaluation of the initial machining state of the part as described above.

[0013] The present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the in-machine evaluation steps for the initial machining state of the part as described above.

[0014] Compared with the prior art, the in-machine evaluation method and related apparatus for the initial processing state of parts of the present invention have the following beneficial effects: This invention discloses an in-machine evaluation method for the initial machining state of a part. It utilizes an in-machine probe on a CNC machine tool to automatically evaluate the runout and deformation of the part after clamping. Considering that disc-shaped parts are often made of difficult-to-machine materials such as titanium alloys, high-temperature alloys, and powder metallurgy high-temperature alloys, it is necessary to evaluate the machining datum before machining to ensure that the initial accuracy of the part meets machining requirements. This invention addresses the problem of probe movement without a reference by attaching the probe coordinate system to the fixture and using this as a reference to establish the initial working coordinate system of the probe. Before machining, the coordinate positions and distribution density of the acquisition points are set according to the rigidity of the part. The reference circle, reference surface, and key features that may interfere with subsequent machining are measured. By comparing and judging the information from the acquisition points, an initial machining datum runout model of the part can be accurately constructed, outputting the magnitude and orientation of the part's runout. This relatively accurate and efficient automatic evaluation of whether the part's installation state meets the requirements of subsequent machining avoids the influence of the part's clamping state and individual differences on machining accuracy, improves the reliability of the part, and has certain engineering applicability. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and constitute a part of this invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0016] Figure 1 This is a flowchart illustrating an in-machine evaluation method for the initial processing state of a part according to the present invention. Figure 2 This is a schematic diagram of the circular runout evaluation method in an embodiment of an in-machine evaluation method for the initial machining state of a part according to the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0019] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0020] It should be noted that the apparatus and methods disclosed in the embodiments herein can also be implemented in other ways. The apparatus embodiments described above are merely illustrative; for example, the flowcharts and block diagrams in the accompanying drawings show the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments herein. In this regard, each block in a flowchart or block diagram may represent a module, program, or part of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system to perform the specified function or action, or can be implemented using a combination of dedicated hardware and computer instructions.

[0021] In addition, the functional modules in the various embodiments of this article can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0022] How to propose a programming method that uses an in-machine probe to automatically detect and make machining decisions based on the runout and angularity of parts and tooling installation states, thereby improving and optimizing the reliability of autonomous evaluation of the initial clamping runout state during the machining of disc and ring-type parts.

[0023] like Figure 1 As shown, the present invention provides an in-machine evaluation method for the initial machining state of a part, comprising the following steps: S1. Based on the clamping position of the fixture for the part to be tested, establish the initial workpiece coordinate system for part inspection; collect the end face height coordinate value and mounting circle position coordinate value of the fixture for the part to be tested through the in-machine probe; S2. Calculate the radius of the mounting circle based on the coordinates of the mounting circle position, sort and compare the end face height coordinates and radius values, and output the end face runout, circular runout and corresponding angular values ​​of the fixture of the part to be measured. S3. When the part to be tested is installed in the fixture, the reference end face height coordinate value and reference circle position coordinate value of the part to be tested are collected by the in-machine probe; the radius value of the reference circle is calculated based on the reference circle position coordinate value, and the reference end face height coordinate value and the radius value of the reference circle are sorted and compared, and the end face runout value, circle runout value and corresponding angular direction of the part to be tested are output. S4. Compare the end face runout and circular runout of the part to be tested with the preset allowable range values. If the preset allowable range values ​​are met, proceed with subsequent processing. If the preset allowable range values ​​are not met, compare the runout angle of the part to be tested and the fixture of the part to be tested to determine whether they are in the same angle direction. Output alarm information according to the judgment result to complete the on-machine evaluation of the initial processing state of the part.

[0024] This invention provides an in-machine evaluation method for the initial machining state of parts. It establishes an initial workpiece coordinate system and collects the coordinate data of the fixture, providing a benchmark for subsequent measurements. The method calculates the runout and angular displacement of the fixture to quantify clamping errors. After part installation, it collects the benchmark coordinate data and calculates the part's runout and angular displacement. Finally, by comparing the part's runout value with a preset allowable range, it automatically decides whether to proceed with machining or issue an alarm. This avoids manual intervention, improves the accuracy and efficiency of inspection, ensures the reliability of the part's clamping state, and fundamentally reduces machining defects caused by improper clamping, thereby improving the level of production automation and product quality consistency. Furthermore, this method integrates an in-machine probe into the CNC system, achieving standardization and repeatability of the inspection process, making it suitable for high-precision machining scenarios involving disc and ring-shaped parts.

[0025] In some embodiments, the in-machine evaluation method for the initial machining state of a part according to the present invention includes the following specific steps: Establish an initial workpiece coordinate system for part inspection based on the fixture clamping position; Based on the rigidity of the fixture, the height coordinate value Zi of the end face of the clamping stop and the position coordinate values ​​(Xi, Yi) of the 8 points of the mounting circle are collected at 8 evenly distributed points (the number of measurement points can be increased as needed); Calculate the radius Ri of the installation circle based on the position coordinates (Xi, Yi). Compare the height Zi and radius Ri in the CNC program using the bubble sorting method according to the detection position order. Output the maximum and minimum values ​​in the height and radius directions and the angular direction. The end face runout value is Zmax-Zmin, and the circle runout value is Rmax-Rmin. Install the parts and tighten them; Based on the rigidity and machining accuracy of the part, the height coordinate value Zi of the machining reference end face and the position coordinate values ​​(Xi, Yi) of the reference circle are collected at 8 evenly distributed points (the number of measurement points can be increased as needed); Calculate the radius Ri of the installation circle based on the position coordinates (Xi, Yi). Compare the height Zi and radius Ri in the CNC program using the bubble sorting method according to the detection position order. Output the maximum and minimum values ​​in the height and radius directions and the angular direction. The end face runout value is Zmax-Zmin, and the circle runout value is Rmax-Rmin. The program compares the calculated runout value with the allowable range value for part machining alignment. If the requirements are met, the program automatically proceeds with subsequent machining. If the requirements are not met, the program compares and analyzes the runout magnitude and angular direction of the part and the fixture to determine whether they are in the same angular direction, whether the runout is caused by the accumulation of fixture clamping errors, and then exits the program and issues an alarm to find out the cause.

[0026] In certain operating conditions, this invention ensures the stability and accuracy of the coordinate system by attaching the in-machine probe coordinate system to the fixture, reducing accumulated errors during coordinate system transformation, and providing a reliable reference for subsequent coordinate data acquisition, thereby improving the repeatability and accuracy of the overall measurement results. By evenly distributing multiple measurement points, this invention comprehensively covers the key features of the fixture and parts, obtaining more representative data samples and avoiding random deviations at local points, thus improving the comprehensiveness and accuracy of runout evaluation.

[0027] Furthermore, this invention adjusts the number and distribution density of points based on the rigidity of the fixture or part, enabling precise measurement for different rigidity characteristics. It increases the point density in areas of weaker rigidity to capture subtle deformations. The sorting comparison method employed in this invention uses bubble sort, which is simple, reliable, and suitable for processing small datasets in CNC programs.

[0028] The runout value calculation method of this invention is determined by the difference between the maximum and minimum coordinate values, ensuring the consistency and comparability of the runout results. The angular comparison and alarm information, by comparing whether the runout angular direction of the part and the fixture is consistent, can accurately diagnose the root cause of the problem, such as distinguishing between accumulated fixture errors or excessive runout of the part itself. This guides operators to quickly take corrective measures, reducing downtime and debugging costs, and improving the efficiency and quality control level of the production process.

[0029] like Figure 2 The diagram shown is a schematic of the circular runout evaluation method; in Figure 2 In the diagram, (X0, Y0) is the rotation center of the machine tool. This represents the maximum radius of the sampling point for the part. This represents the minimum radius of the part sampling point. , is the angular direction of the point where the part's runout is maximum. This represents the maximum radius of the fixture's sampling point. This represents the minimum radius of the fixture's sampling point. The angle of the point where the clamp runout is maximum.

[0030] This embodiment includes a fixture runout detection and evaluation program, a part runout detection and evaluation program, and a deviation judgment program. The program can automatically acquire and judge the coordinates of measurement points, automatically evaluate the part's condition, and provide feedback on any issues. It can automatically determine the runout value and angular direction based on the measurement points, preparing for subsequent machining, saving operation time, reducing machining risks, and can be used for on-machine evaluation of the clamping status of various disc-ring type parts before machining.

[0031] In a specific embodiment, the present invention processes parts containing two sets of holes with diameters of 32-Φ10 distributed on different pitch circles using an in-machine evaluation method based on the initial machining state of the part. +0.05 16-Φ8 +0.012 For disc-shaped parts, the runout of the reference surface and the circular runout must not exceed 0.01mm before machining. First, establish a measurement reference coordinate system on the fixture using an in-machine probe and write it into different machine tool working offsets (preset table). Use the probe to detect the circular and end face runout of the fixture stop and find the angular direction of the maximum runout. Clamp the part and use the probe to detect the reference circular and end face runout, calculate the maximum runout, and determine the angular direction. If the reference circular and end face runout is less than 0.01mm, continue machining. If it is greater than 0.01mm, check if the maximum runout of the part and the fixture accumulates. If so, exit the program and output error "JIA JUWU CHA LEI JI"; otherwise, exit the program and output error "LING JIA TIAO DONG CHAO CHA".

[0032] This invention also provides a system for in-machine evaluation of the initial machining state of a part. The system implements the aforementioned in-machine evaluation method for the initial machining state of a part. The system includes an initial workpiece coordinate system module, a fixture parameter output module for the part under test, a parameter output module for the part under test, and an in-machine evaluation module; wherein: Initial workpiece coordinate system module: used to establish the initial workpiece coordinate system for part inspection based on the clamping position of the fixture of the part to be tested; and to collect the end face height coordinate value and mounting circle position coordinate value of the fixture of the part to be tested through the in-machine probe; The parameter output module for the fixture of the part under test is used to calculate the radius value of the mounting circle based on the coordinate value of the mounting circle position, sort and compare the end face height coordinate value and the radius value, and output the end face runout value, circular runout value and corresponding angular direction of the fixture of the part under test; The parameter output module for the part under test is used to collect the reference end face height coordinates and reference circle position coordinates of the part under test through the in-machine probe when the part under test is installed in the part under test fixture; calculate the radius of the reference circle based on the reference circle position coordinates; sort and compare the reference end face height coordinates and the radius of the reference circle; and output the end face runout value, circular runout value and corresponding angular direction of the part under test. In-machine evaluation module: Used to compare the end face runout and circular runout of the part under test with the preset allowable range values; if the preset allowable range values ​​are met, subsequent processing is performed; if the preset allowable range values ​​are not met, the runout angle of the part under test and the fixture of the part under test are compared to determine whether they are in the same angle direction, and alarm information is output according to the judgment result to complete the in-machine evaluation of the initial processing state of the part.

[0033] The present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to perform the in-machine evaluation of the initial machining state of the part as described above.

[0034] The present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the in-machine evaluation steps for the initial machining state of the part as described above.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Anyone skilled in the art can readily implement the present invention according to the description and above. Any modifications, alterations, or equivalent variations made using the technical content disclosed above are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A method for evaluating the initial machining state of a part, characterized in that, Includes the following steps: S1. Based on the clamping position of the fixture for the part to be tested, establish the initial workpiece coordinate system for part inspection; collect the end face height coordinate value and mounting circle position coordinate value of the fixture for the part to be tested through the in-machine probe; S2. Calculate the radius of the mounting circle based on the coordinates of the mounting circle position, sort and compare the end face height coordinates and radius values, and output the end face runout, circular runout and corresponding angular values ​​of the fixture of the part to be measured. S3. When the part to be tested is installed in the part to be tested fixture, the reference end face height coordinate value and reference circle position coordinate value of the part to be tested are collected by the in-machine probe. The radius of the reference circle is calculated based on the coordinates of the reference circle position, and the reference end face height coordinates and the radius of the reference circle are sorted and compared to output the end face runout, circular runout, and corresponding angular values ​​of the part under test. S4. Compare the end face runout and circular runout of the part to be tested with the preset allowable range values. If the preset allowable range values ​​are met, proceed with subsequent processing. If the preset allowable range values ​​are not met, compare the runout angle of the part to be tested and the fixture of the part to be tested to determine whether they are in the same angle direction. Output alarm information according to the judgment result to complete the on-machine evaluation of the initial processing state of the part. Determining whether they are in the same angular direction includes: comparing whether the runout angular direction of the part to be measured is consistent with the runout angular direction of the fixture of the part to be measured; The alarm information includes a first alarm message indicating the accumulation of fixture error of the part under test and a second alarm message indicating that the runout of the part under test exceeds the tolerance.

2. The in-machine evaluation method for the initial machining state of a part according to claim 1, characterized in that, In S1, the initial workpiece coordinate system is established by attaching the in-machine probe coordinate system to the fixture of the part to be measured.

3. The in-machine evaluation method for the initial machining state of a part according to claim 1, characterized in that, In S1 and S3, the end face height coordinates and mounting circle position coordinates of the fixture of the part under test are collected by multiple measurement points evenly distributed on the fixture of the part under test; the reference end face height coordinates and reference circle position coordinates of the part under test are collected by multiple measurement points evenly distributed on the part under test.

4. The on-machine evaluation method for the initial machining state of a part according to claim 3, characterized in that, In S1 and S3, the number and distribution density of multiple measurement points are set according to the rigidity of the fixture or the part to be measured.

5. The in-machine evaluation method for the initial machining state of a part according to claim 1, characterized in that, In S2 and S3, the sorting comparison is performed using the bubble sort algorithm.

6. The in-machine evaluation method for the initial machining state of a part according to claim 1, characterized in that, In S2 and S3, the end face runout of the fixture for the part to be tested is the difference between the maximum and minimum values ​​of the end face height coordinates, and the circular runout of the fixture for the part to be tested is the difference between the maximum and minimum values ​​of the radius of the mounting circle; the end face runout of the part to be tested is the difference between the maximum and minimum values ​​of the reference end face height coordinates, and the circular runout of the part to be tested is the difference between the maximum and minimum values ​​of the radius of the reference circle.

7. A system for in-machine evaluation of the initial machining state of a part, said system being used to implement the in-machine evaluation method for the initial machining state of a part according to any one of claims 1-6, characterized in that, The system includes an initial workpiece coordinate system module, a fixture parameter output module for the part under test, a parameter output module for the part under test, and an in-machine evaluation module; wherein: Initial workpiece coordinate system module: used to establish the initial workpiece coordinate system for part inspection based on the clamping position of the fixture of the part to be tested; and to collect the end face height coordinate value and mounting circle position coordinate value of the fixture of the part to be tested through the in-machine probe; The parameter output module for the fixture of the part under test is used to calculate the radius value of the mounting circle based on the coordinate value of the mounting circle position, sort and compare the end face height coordinate value and the radius value, and output the end face runout value, circular runout value and corresponding angular direction of the fixture of the part under test; The parameter output module for the part under test is used to collect the reference end face height coordinates and reference circle position coordinates of the part under test through the in-machine probe when the part under test is installed in the part under test fixture; calculate the radius of the reference circle based on the reference circle position coordinates; sort and compare the reference end face height coordinates and the radius of the reference circle; and output the end face runout value, circular runout value and corresponding angular direction of the part under test. In-machine evaluation module: Used to compare the end face runout and circular runout of the part under test with the preset allowable range values; if the preset allowable range values ​​are met, subsequent processing is performed; if the preset allowable range values ​​are not met, the runout angle of the part under test and the fixture of the part under test are compared to determine whether they are in the same angle direction, and alarm information is output according to the judgment result to complete the in-machine evaluation of the initial processing state of the part.

8. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it performs the step of in-machine evaluation of the initial machining state of the part as described in any one of claims 1-6.

9. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it performs the step of in-machine evaluation of the initial machining state of the part as described in any one of claims 1-6.

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