High-pressure rotor integrated assembly method and system, device, and medium

Abstract

The application discloses a high-pressure rotor integrated assembly method and system, equipment and a medium; the assembly method comprises the following steps: constructing a space rotation evaluation model based on the run-out parameters of a high-pressure rotor; establishing a Jacobian matrix according to preset assembly position information, determining the predicted run-out parameter range of a target single-disc rotor; if the actual run-out parameters meet the predicted run-out parameter range, then continue to perform the assembly based on the target single-disc rotor. The application significantly reduces the preparation time of high-pressure rotor assembly and measurement, and improves the assembly efficiency of the high-pressure rotor. The measurement and analysis process of the integrated high-pressure rotor is integrated, the influence of the shape and position tolerance range of the high-pressure rotor on the run-out of the high-pressure rotor assembly is evaluated, whether the assembly run-out meets the tolerance accumulation requirement is evaluated, whether the assembly is in place is automatically judged, and the optimal assembly phase of the high-pressure rotor is provided. Therefore, the assembly process data can be effectively evaluated by a process personnel, the current assembly state is judged, and the run-out change of the high-pressure rotor is predicted.

Description

Technical Field

[0001] This invention relates to the field of aero-engine manufacturing technology, and in particular to a high-pressure rotor integrated assembly method, system, equipment, and medium. Background Technology

[0002] To address the "surge" phenomenon in compressor operation that threatens normal engine operation, venting ports are typically installed in the intermediate stage of the compressor, or multiple rows of adjustable stator blades are used to alter the flow capacity of the flow path. Alternatively, the compressor is designed with low-pressure and high-pressure sections. Therefore, many existing aero-engines utilize dual-rotor compressors consisting of low-pressure and high-pressure rotors. However, due to the complex assembly process and extremely high precision requirements of the high-pressure rotor, current assembly methods often prioritize accuracy at the expense of assembly efficiency. This is particularly true during the assembly of the high-pressure rotor from the component level to the unit assembly stage, where the assembly, measurement, and runout analysis processes cannot be effectively integrated, failing to meet the dual requirements of quality and efficiency in aero-engine production. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of poor integration and low efficiency in the assembly of high-voltage rotors in the prior art, and to provide a high-voltage rotor integrated assembly method, system, equipment and medium.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] This invention provides an integrated assembly method for high-voltage rotors, comprising the following steps:

[0006] Based on the runout parameters of the reference single-disc rotor of the high-pressure rotor, a spatial spin evaluation model is constructed.

[0007] Based on the preset assembly position information of each single-disc rotor in the single-disc rotor group of the high-pressure rotor, a Jacobian matrix corresponding to the spatial spin evaluation model is established; wherein, one end of the single-disc rotor group is the reference single-disc rotor, and the other end is the target single-disc rotor.

[0008] Based on the spatial spinor evaluation model and the Jacobian matrix, the predicted runout parameter range of the target single-disc rotor is determined;

[0009] If the actual runout parameters of the assembled target single-disc rotor meet the predicted runout parameter range, then the assembly continues based on the target single-disc rotor; otherwise, the single-disc rotor assembly is adjusted.

[0010] Preferably, the runout parameters include cylindrical runout parameters and end-face runout parameters; characterized in that, before the step of determining the runout parameters of the reference single-disc rotor based on the high-pressure rotor, the method further includes:

[0011] Collect the cylindrical feature parameters corresponding to the cylindrical surface of the reference single-disc rotor of the high-pressure rotor;

[0012] The cylindrical feature parameters are fitted to obtain the cylindrical runout parameters corresponding to the cylindrical surface of the reference single-disc rotor.

[0013] Using a laser line device, end-face feature parameters corresponding to the end face of the reference single-disc rotor of the high-voltage rotor are collected to determine the end-face runout parameters corresponding to the end face of the reference single-disc rotor.

[0014] Preferably, the runout parameters include the coaxiality parameters and roundness parameters corresponding to the reference single-disc rotor; the step of establishing the Jacobian matrix corresponding to the single-disc rotor group based on the preset assembly position information of each single-disc rotor in the single-disc rotor group of the high-pressure rotor includes:

[0015] Based on the runout parameter, the coaxiality parameter and the roundness parameter are separated;

[0016] The spatial spinor evaluation model is constructed based on the coaxiality parameter and the roundness parameter.

[0017] Preferably, the coordinate system orientation of each single rotor in the single rotor group is consistent in the Jacobian matrix, and the end face screw and cylindrical screw corresponding to each single rotor are error-transmitted in the tolerance direction based on the Jacobian matrix.

[0018] The present invention also provides an integrated high-voltage rotor assembly system, comprising:

[0019] The model building module is used to build a spatial spin evaluation model based on the runout parameters of the reference single-disc rotor of the high-pressure rotor.

[0020] The matrix establishment module is used to establish the Jacobian matrix corresponding to the spatial spin evaluation model based on the preset assembly position information of each single-disc rotor in the single-disc rotor group of the high-pressure rotor; wherein, one end of the single-disc rotor group is the reference single-disc rotor, and the other end is the target single-disc rotor.

[0021] The analysis module is used to determine the predicted runout parameter range of the target single-disc rotor based on the spatial spinor evaluation model and the Jacobian matrix.

[0022] The assembly optimization module is used to continue the assembly process based on the target single-disc rotor if the actual runout parameters of the assembled target single-disc rotor meet the predicted runout parameter range; otherwise, the single-disc rotor group is adjusted.

[0023] Preferably, the runout parameters include cylindrical runout parameters and end face runout parameters; characterized in that the integrated assembly system further includes a parameter acquisition module, the parameter acquisition module comprising:

[0024] The cylindrical surface acquisition unit is used to acquire the cylindrical surface feature parameters corresponding to the cylindrical surface of the reference single-disc rotor of the high-pressure rotor;

[0025] A cylindrical surface fitting unit is used to fit the cylindrical surface feature parameters to obtain the cylindrical surface runout parameters corresponding to the cylindrical surface of the reference single-disc rotor.

[0026] The end-face acquisition unit is used to acquire end-face feature parameters corresponding to the end face of the reference single-disc rotor of the high-voltage rotor based on the laser line device, so as to determine the end-face runout parameters corresponding to the end face of the reference single-disc rotor.

[0027] Preferably, the runout parameters include the coaxiality parameters and roundness parameters corresponding to the reference single-disc rotor; the matrix establishment module includes:

[0028] The parameter separation unit is used to separate the coaxiality parameter and the roundness parameter based on the runout parameter;

[0029] A construction unit is used to construct the spatial spinor evaluation model based on the coaxiality parameter and the roundness parameter.

[0030] Preferably, the coordinate system orientation of each single rotor in the single rotor group is consistent in the Jacobian matrix, and the end face screw and cylindrical screw corresponding to each single rotor are error-transmitted in the tolerance direction based on the Jacobian matrix.

[0031] The present invention also provides an electronic 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 implement the above-described high-voltage rotor integrated assembly method.

[0032] The present invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described high-voltage rotor integrated assembly method.

[0033] The significant advantages of this invention are as follows: the integrated high-voltage rotor assembly method, system, equipment, and medium significantly reduce the preparation time for high-voltage rotor assembly and measurement, thereby improving the assembly efficiency. It integrates the measurement and analysis process of the high-voltage rotor, assesses the impact of the high-voltage rotor's form and position tolerance range on the high-voltage rotor assembly runout, evaluates whether the assembly runout meets the tolerance accumulation requirements, automatically determines whether the assembly is in place, and provides the optimal assembly phase for the high-voltage rotor. This effectively assists process engineers in evaluating assembly process data, determining the current assembly status, and predicting changes in high-voltage rotor runout. Attached Figure Description

[0034] Figure 1 This is a flowchart of the integrated assembly method of the high-voltage rotor according to Embodiment 1 of the present invention.

[0035] Figure 2 This is a schematic diagram of an integrated high-voltage rotor assembly platform according to an embodiment of the present invention.

[0036] Figure 3 This is a schematic diagram of the integrated assembly system of the high-pressure rotor in Embodiment 2 of the present invention.

[0037] Figure 4 This is a structural block diagram of the electronic device according to Embodiment 3 of the present invention. Detailed Implementation

[0038] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0039] Example 1

[0040] See Figure 1 This embodiment provides an integrated assembly method for a high-pressure rotor. Based on the measurement and execution effect of a single-disc rotor of the high-pressure rotor, it integrates the measurement and optimization analysis of high-pressure rotor assembly errors. According to the measured runout value of the single-disc rotor, the cylindrical roundness, end-face flatness shape errors, cylindrical eccentricity, end-face tilt, and other positional errors of the high-pressure rotor disc are calculated. The form and position errors of the single disc are expressed by a screw matrix. The height, axial dimension, and assembly phase of the high-pressure rotor are obtained, and a Jacobi matrix for high-pressure rotor error propagation is established. Combining the Jacobi matrix and the screw matrix, an assembly error propagation model is established. By analyzing the relationship between the assembly phase and the final runout of the high-pressure rotor, the optimal assembly result and the influence of the single-disc form and position tolerance on the result are obtained. Furthermore, the influence of the single-disc tolerance variation range on the runout of the high-pressure rotor assembly can be evaluated.

[0041] The high-voltage rotor integrated assembly method of this embodiment includes the following steps:

[0042] S1. Based on the runout parameters of the benchmark single-disc rotor of the high-pressure rotor, construct a spatial spinor evaluation model;

[0043] S2. Based on the preset assembly position information of each single-disc rotor in the single-disc rotor group of the high-pressure rotor, establish the Jacobian matrix corresponding to the spatial spin evaluation model; where one end of the single-disc rotor group is the reference single-disc rotor and the other end is the target single-disc rotor.

[0044] S3. Determine the predicted runout parameter range of the target single-disc rotor based on the spatial spinor evaluation model and the Jacobian matrix;

[0045] S4. If the actual runout parameters of the assembled target single-disc rotor meet the predicted runout parameter range, then continue the assembly based on the target single-disc rotor; otherwise, adjust the single-disc rotor group.

[0046] This embodiment of the high-voltage rotor integrated assembly method integrates assembly, error testing, and analysis and optimization functions, providing a one-stop solution for measurement and result analysis. The main characteristic of a single high-voltage rotor disc is that it has front and rear mounting edges, which are both assembly positioning surfaces. The mating surfaces of a single disc include two typical features. The first typical feature is a cylindrical surface, which can be an outer cylindrical surface or an inner cylindrical surface. The mating feature of the cylindrical surfaces is usually a match between the inner and outer cylindrical surfaces. The inner cylindrical surface typically has a larger diameter than the mating outer cylindrical surface. The mating of the inner and outer cylindrical surfaces serves a centering function.

[0047] In a preferred embodiment, the runout parameters include cylindrical runout parameters and end-face runout parameters; prior to the step of determining the runout parameters of a reference single-disc rotor based on a high-pressure rotor, the following steps are also included:

[0048] Collect the cylindrical feature parameters corresponding to the cylindrical surface of the reference single-disc rotor of the high-pressure rotor;

[0049] The cylindrical feature parameters are fitted to obtain the cylindrical runout parameters corresponding to the cylindrical surface of the reference single-disc rotor.

[0050] Using laser line equipment, end-face feature parameters corresponding to the end face of the reference single-disc rotor of the high-voltage rotor are collected to determine the end-face runout parameters corresponding to the end face of the reference single-disc rotor.

[0051] The features of the inner and outer cylindrical surfaces can be acquired by measuring a full circle using a displacement sensor, or by simultaneously acquiring data for a single cross-section using laser ranging. Alternatively, the features can be obtained by scanning point clouds using a vision sensor. After acquiring the features of a typical cylindrical surface, fitting processing can yield the runout data of the inner or outer cylindrical surface. This runout data reflects the overall characteristics of a single cylindrical surface. The overall characteristics of the runout data include the roundness and eccentricity of the cylindrical surface. The roundness and eccentricity of the cylindrical surface are described using a spinor matrix.

[0052] Another typical feature of a high-pressure rotor single disc is its end face positioning surface. The typical structure of the end face positioning surface is that it has evenly distributed bolt holes. After the end faces of two single discs are placed together, bolts and self-locking nuts are used to tighten and press the two discs together. The end faces of a high-pressure rotor single disc have two typical structures: one where the outer cylindrical surface is used for positioning, and the other where the inner cylindrical surface is used for positioning. The end face characteristics are usually collected by using mechanical or digital dial indicators to collect point runout data. Simultaneously, the platform can use a line laser meter to measure the end face runout. The advantage of a line laser meter over mechanical or digital dial indicators is that it emits a single laser line onto the end face of the single disc at the same time. By measuring the laser's return time difference, the runout data of the end face along that laser line can be measured. The runout data essentially represents the microscopic undulation distribution of the end face. Mechanical or digital dial indicators can only measure the runout data of a single point on the end face at a time; only by rotating the part 360° can the runout data of a concentric circular cross-section be obtained. This invention uses a turntable to measure runout data by projecting a laser line onto the end face. After one full rotation of the turntable, the runout of an entire surface can be collected. Compared to traditional mechanical or digital lever indicators, the number of features collected is several times greater. Since it's equivalent to simultaneously measuring concentric circles of different diameters, it can more accurately reflect the runout characteristics of the end face. Especially when the end face exhibits a saddle shape or double high points, the laser ranging method can accurately capture the location of the saddle-shaped high and low points, avoiding the problem of missing high and low points in the data measured by mechanical or digital lever indicators.

[0053] End faces and cylindrical surfaces can serve as either references or controlled features. When used as references, the primary consideration is form tolerance, specifically the roundness of the cylindrical surface and the flatness of the end face. As references, this device can filter out the form tolerance of a single-disc reference through its self-aligning and tilting functions, ensuring the rotation axis coincides with the reference. When end faces and cylindrical surfaces are controlled objects, both form error and position tolerance must be controlled simultaneously. For cylindrical surfaces, the influence of roundness and eccentricity must be considered. Roundness is the inherent machining error of the measured cylindrical surface, while eccentricity is the machining deviation of the measured cylindrical surface relative to the reference. When end faces are controlled objects, both flatness and parallelism must be considered. Flatness is the inherent error of the end face, while parallelism is the tilt error relative to the reference. The form and position tolerances of the cylindrical and end faces are expressed using rotational methods.

[0054] The shape error and eccentricity error of a cylindrical surface can be expressed by the orientation of the measured surface in space. Assuming the part is a rigid body model, the orientation of the measured surface in space can be expressed as six variations: rotation about the X-axis, rotation about the Y-axis, rotation about the Z-axis, translation along the X-direction, translation along the Y-direction, and translation along the Z-direction. The X, Y, and Z coordinates form an ideal coordinate system established on an ideal surface. The characteristics of a cylindrical surface typically include movement along the X-axis, Y-axis, and Z-axis. Movement deviations are derived from the runout data of the measured cylindrical surface, and the roundness and eccentricity of the cylindrical surface are separated from the runout data. The deviations along the X-axis, Y-axis, and Z-axis are calculated using the roundness and eccentricity. This represents the lower deviation of the cylinder along the X-axis. This represents the upper deviation of the cylinder along the X-axis. cylindrical

[0055] Lower deviation along the Y-axis This represents the upper deviation of the cylinder along the Y-axis. It is the lower deviation of the cylindrical surface along the Z-axis. This is the upper deviation of the cylindrical surface along the Z-axis. Before machining, the deviation of the cylindrical surface is within the tolerance control range of the part; this deviation range represents the machining error of the part, which can be expressed as the left and right limits of the screw rotation. The screw rotation along the X-axis can be expressed as... The screw in the Y-axis can be expressed as: The spinor in the Z-axis direction can be expressed as: The screw range model describes the range of form and position tolerances of a part during the part design phase. After the part is machined, the machining error is fixed, meaning the deviation is a definite value, and the screw is no longer a range but a definite quantity.

[0056]

[0057] The characteristics of the end face typically include rotation along the two X-axis and rotation along the Y-axis and Z-axis. The movement deviation is derived from the runout data of the measured end face, and the flatness and tilt of the end face are separated from the runout data. The rotation angles along the X-axis, Y-axis, and Z-axis are calculated from the flatness and tilt.

[0058] This represents the lower difference in the rotation angle of the end face around the X-axis. The upper difference is the angle of rotation of the end face around the X-axis. The lower difference of the end face rotation angle around the Y-axis This is the upper difference of the end face rotating around the Y-axis. It is the lower deviation of the end face rotating around the Z-axis. This is the upper deviation of the end face rotation around the Z-axis. Before machining, the end face deviation is within the part's tolerance control range; this deviation range represents the part's machining error, which can be expressed as the left and right limits of the rotation. The rotation around the X-axis can be expressed as... The rotational spinor about the Y-axis can be expressed as The spinor of rotation about the Z-axis can be expressed as The screw range model also describes the form and position tolerance range of a part during the part design phase. After the part is machined, the machining error is fixed, meaning the deviation is a definite value, and the screw is no longer a range but a definite quantity.

[0059] In a preferred embodiment, the runout parameters include the coaxiality and roundness parameters corresponding to the reference single-disc rotor; based on the preset assembly position information of each single-disc rotor in the single-disc rotor group of the high-pressure rotor, the Jacobian matrix corresponding to the single-disc rotor group is established, including:

[0060] Based on the runout parameter, the coaxiality parameter and the roundness parameter are separated.

[0061] A spatial spinor evaluation model is constructed based on coaxiality and roundness parameters.

[0062] The error is described using the Jacobi spinor method, which allows the error to be separated from the error calculation process. The error propagation process described in the error calculation can be simply understood as the propagation of "coefficients." This method of error propagation is described using a Jacobi matrix:

[0063]

[0064] In the Jacobian matrix The rotation matrix represents the i-th coordinate system relative to the 0-th coordinate system. The i-th coordinate system is established on the mating surface of each compressor disk, and each compressor disk mating establishes two coordinate systems. The i-th coordinate system is established on the i / 2+1-th stage rotor. The 0-th coordinate system is the measurement and assembly reference for the entire high-pressure rotor. The orientation of the coordinate system is very important when determining the tolerance direction, and the orientation of the coordinate systems of each disk needs to be consistent. The orientation of the coordinate system affects the correctness of the subsequent tolerance fitting results.

[0065] The rotation matrix of the i-th coordinate system relative to the 0-th coordinate system can be described as:

[0066]

[0067] in, This describes the rotation θ of the i-th coordinate system relative to the 0-th coordinate system around the x-axis of the i-th coordinate system. i°, which is a right-handed coordinate system, with clockwise as positive. The 0th coordinate system is the reference coordinate system for the final error.

[0068] in, This describes the rotation θ of the i-th coordinate system relative to the 0-th coordinate system around the Y-axis of the i-th coordinate system. i °, the θ i It is a right-handed coordinate system, with clockwise as the positive direction.

[0069] in, This describes the rotation θ of the i-th coordinate system relative to the 0-th coordinate system around the Z-axis of the i-th coordinate system. i °, the θ i This is a right-handed coordinate system, with clockwise as positive. The 0th coordinate system is the reference coordinate system for the final error. If the plane containing the tolerance does not conform to the direction of the final control tolerance, the tolerance needs to be projected onto the transfer path. This represents the projection of the tolerance onto the direction of the functional requirement.

[0070] The V1, V2, and V3 are composed of three column vectors. V1 is the projection of the X-axis direction vector of coordinate system i onto the three coordinate axes in the reference coordinate system. V2 is the projection of the Y-axis direction vector of coordinate system i onto the three coordinate axes in the reference coordinate system. V3 is the projection of the Z-axis direction vector of coordinate system i onto the three coordinate axes in the base coordinate system.

[0071] In a single disk of a high-pressure rotor, the tolerance projection direction remains unchanged, i.e.

[0072] W i n It is the translation vector of the nth coordinate system relative to the i-th coordinate system. Where:

[0073]

[0074] dx, dy, and dz are as follows, pointing from the origin of the last level coordinate system to the current i-th coordinate system.

[0075]

[0076] By measuring the runout of each stage of the disk, the spin error of a single disk can be obtained. Based on the transfer Jacobian matrix of each stage of the disk, the error required for the function can be calculated, namely the runout of the high-pressure rotor grate disk relative to the front journal.

[0077] The spin error of each disk stage can be divided into end face error and cylindrical surface error. The tolerance zone of the end face error is the region between two planes. The spin model of the end face deviates in three directions, the first being the deviation along the Z-axis, through t d1 This indicates that the range of variation is (k) wd1 -1)t d1 --k wd1 t d1 k wd1 Located between 0 and 1. The minimum value of the end face error is (k wd1 -1)t d1 The maximum value is k wd1 t d1 The end-face error is a positional error, typically expressed as parallelism relative to a reference. This positional error does not include end-face deformation or unevenness. Therefore, the screw model focuses primarily on the parallelism of the end faces.

[0078] The end face error also includes tilt in the X-axis direction. d1 Where a1 is the diameter of the cylinder containing the end face, and the tilt error range of the end face in the X direction can be described as ((k αd1 -1)t d1 / a1,k αd1 t d1 / a1). The k αd1 It lies between 0 and 1. When k αd1 When = 0, the tilt error of the end face in the X direction is (-t) d1 / a1,0). When k αd1 When = 1, the tilt error of the end face in the X direction is (0, -t) d1 / a1). When k αd1 When = -1, the tilt error of the end face in the X direction is (0, -t) d1 / a1).

[0079] The end face error also includes tilt in the Y-axis direction. d1 Where b1 is the diameter of the cylinder containing the end face, and the tilt error range of the end face in the Y direction can be described as ((k βd1 -1)t d1 / b1,k βd1 t d1 / b1). The k βd1 It lies between 0 and 1. When k βd1 When = 0, the tilt error of the end face in the X direction is (-t) d1 / b1,0). When k βd1 When = 1, the tilt error of the end face in the X direction is (0, -t) d1 / b1). When kβd1 When = -1, the tilt error of the end face in the X direction is (0, -t) d1 / b1).

[0080]

[0081] The spin error of each disk level also includes cylindrical error, the tolerance zone of which is a cylinder. The spin of the cylindrical error can be decomposed into spin in the X direction and spin in the Y direction, the range of which in the X direction is ((k ucb1 -1)t ucb1 ,k ub1 t cb1 The range in the Y direction is The k ucb1 k represents the control coefficient for variation in the X direction. vcb1 This represents the control coefficient for variation in the Y direction. t ucb1 This represents the maximum eccentricity.

[0082]

[0083] Each individual disk can establish end face roll and cylindrical roll relative to the front datum. The transfer of end face roll and cylindrical roll in the tolerance direction is achieved through a Jacobian matrix. Specifically, this can be implemented as follows:

[0084] The runout of the mounting edge of a single high-pressure rotor disc is measured. Based on this runout, the coaxiality, roundness, parallelism, and flatness of the mounting edge are calculated. A spinor model is established to express the errors of each disc level based on the coaxiality, roundness, parallelism, and flatness of the single disc. The shape error and eccentricity error of the cylindrical surface can be expressed by the spatial orientation of the measured surface. Assuming the part is a rigid body model, the spatial orientation of the measuring surface can be expressed as six variations: rotation around the X-axis, rotation around the Y-axis, rotation around the Z-axis, translation along the X-direction, translation along the Y-direction, and translation along the Z-direction. The coordinates X, Y, and Z are an ideal coordinate system established on an ideal surface.

[0085] Based on the assembly positional relationships and dimensions of the high-pressure rotor, establish the Jacobian matrix for error propagation at each level of the disks. Using the screw model expressing the error and the Jacobian matrix expressing the propagation relationship, the coaxiality value of the error propagated to the N-level disk can be calculated. Assemble the high-pressure rotor assembly to the N-level rotor assembly using the assembly and testing platform. Measure the runout value of the N-pole assembly of the high-pressure rotor using the assembly and testing platform. Analyze the difference between the measured runout and the predicted runout of the high-pressure rotor using the assembly and testing platform. If satisfied, proceed to the next assembly level. If not satisfied, optimize the assembly relationship of the individual high-pressure rotor disks and control the form and position tolerances of the individual disks. Continue with the measurement and evaluation using the assembly and testing platform.

[0086] The integrated assembly method for high-voltage rotors in this embodiment reduces the preparation time for high-voltage rotor assembly and measurement, thus improving assembly efficiency. It integrates the measurement and analysis process of the high-voltage rotor, assessing the impact of the high-voltage rotor's form and position tolerance range on the high-voltage rotor assembly runout. It evaluates whether the assembly runout meets the cumulative tolerance requirements, automatically determines whether the assembly is in place, and provides the optimal assembly phase for the high-voltage rotor. It assists process engineers in evaluating assembly process data to determine the current assembly status and predict changes in high-voltage rotor runout.

[0087] Example 2

[0088] This embodiment provides an integrated assembly system for high-pressure rotors. Based on the measurement and execution effect of a single-disc rotor in a high-pressure rotor assembly, it integrates high-pressure rotor assembly error measurement and optimization analysis. Based on the measured runout value of the single-disc rotor, it calculates the cylindrical roundness, end-face flatness shape error, cylindrical eccentricity, end-face tilt, and other positional errors of the high-pressure rotor disc. The form and position errors of the single disc are expressed using a screw matrix. The system obtains the height, axial dimension, and assembly phase of the high-pressure rotor, establishes a Jacobi matrix for high-pressure rotor error propagation, and combines the Jacobi matrix and screw matrix to establish an assembly error propagation model. By analyzing the relationship between the assembly phase and the final runout of the high-pressure rotor, it derives the optimal assembly result and the influence of single-disc form and position tolerances on the result. Furthermore, it can evaluate the impact of single-disc tolerance variation range on the runout of the high-pressure rotor assembly. This can be achieved through methods such as... Figure 2 The high-voltage rotor integrated assembly platform shown is implemented, including high-voltage rotor assembly system I, high-voltage rotor runout measurement system II, and high-voltage rotor assembly process analysis and optimization system III.

[0089] See Figure 3 The high-voltage rotor integrated assembly system of this embodiment includes:

[0090] Model building module 1 is used to build a spatial spin evaluation model based on the runout parameters of the reference single-disc rotor of the high-pressure rotor.

[0091] Matrix building module 2 is used to build the Jacobian matrix corresponding to the spatial spin evaluation model based on the preset assembly position information of each single-disc rotor in the single-disc rotor group of the high-pressure rotor; one end of the single-disc rotor group is the reference single-disc rotor, and the other end is the target single-disc rotor.

[0092] Analysis module 3 is used to determine the predicted runout parameter range of the target single-disc rotor based on the spatial spinor evaluation model and the Jacobian matrix;

[0093] Assembly optimization module 4 is used to continue the assembly based on the target single-disc rotor if the actual runout parameters of the assembled target single-disc rotor meet the predicted runout parameter range; otherwise, the single-disc rotor group is adjusted.

[0094] The high-voltage rotor integrated assembly system in this embodiment integrates assembly, error testing, and analysis and optimization functions, providing a one-stop solution for measurement and result analysis. The main characteristic of a single high-voltage rotor disc is that it has front and rear mounting edges, which are both assembly positioning surfaces. The mating surfaces of a single disc include two typical features. The first typical feature is a cylindrical surface, which can be an outer cylindrical surface or an inner cylindrical surface. The mating feature of the cylindrical surfaces is usually a match between the inner and outer cylindrical surfaces. The inner cylindrical surface typically has a larger diameter than the mating outer cylindrical surface. The mating of the inner and outer cylindrical surfaces serves a centering function.

[0095] The features of the inner and outer cylindrical surfaces can be acquired by measuring a full circle using a displacement sensor, or by simultaneously acquiring data for a single cross-section using laser ranging. Alternatively, the features can be obtained by scanning point clouds using a vision sensor. After acquiring the features of a typical cylindrical surface, fitting processing can yield the runout data of the inner or outer cylindrical surface. This runout data reflects the overall characteristics of a single cylindrical surface. The overall characteristics of the runout data include the roundness and eccentricity of the cylindrical surface. The roundness and eccentricity of the cylindrical surface are described using a spinor matrix.

[0096] Another typical feature of a high-pressure rotor single disc is its end face positioning surface. The typical structure of the end face positioning surface is that it has evenly distributed bolt holes. After the end faces of two single discs are placed together, bolts and self-locking nuts are used to tighten and press the two discs together. The end faces of a high-pressure rotor single disc have two typical structures: one where the outer cylindrical surface is used for positioning, and the other where the inner cylindrical surface is used for positioning. The end face characteristics are usually collected by using mechanical or digital dial indicators to collect point runout data. Simultaneously, the platform can use a line laser meter to measure the end face runout. The advantage of a line laser meter over mechanical or digital dial indicators is that it emits a single laser line onto the end face of the single disc at the same time. By measuring the laser's return time difference, the runout data of the end face along that laser line can be measured. The runout data essentially represents the microscopic undulation distribution of the end face. Mechanical or digital dial indicators can only measure the runout data of a single point on the end face at a time; only by rotating the part 360° can the runout data of a concentric circular cross-section be obtained. This invention uses a turntable to measure runout data by projecting a laser line onto the end face. After one full rotation of the turntable, the runout of an entire surface can be collected. Compared to traditional mechanical or digital lever indicators, the number of features collected is several times greater. Since it's equivalent to simultaneously measuring concentric circles of different diameters, it can more accurately reflect the runout characteristics of the end face. Especially when the end face exhibits a saddle shape or double high points, the laser ranging method can accurately capture the location of the saddle-shaped high and low points, avoiding the problem of missing high and low points in the data measured by mechanical or digital lever indicators.

[0097] End faces and cylindrical surfaces can serve as either references or controlled features. When used as references, the primary consideration is form tolerance, specifically the roundness of the cylindrical surface and the flatness of the end face. As references, this device can filter out the form tolerance of a single-disc reference through its self-aligning and tilting functions, ensuring the rotation axis coincides with the reference. When end faces and cylindrical surfaces are controlled objects, both form error and position tolerance must be controlled simultaneously. For cylindrical surfaces, the influence of roundness and eccentricity must be considered. Roundness is the inherent machining error of the measured cylindrical surface, while eccentricity is the machining deviation of the measured cylindrical surface relative to the reference. When end faces are controlled objects, both flatness and parallelism must be considered. Flatness is the inherent error of the end face, while parallelism is the tilt error relative to the reference. The form and position tolerances of the cylindrical and end faces are expressed using rotational methods.

[0098] The shape error and eccentricity error of a cylindrical surface can be expressed by the orientation of the measured surface in space. Assuming the part is a rigid body model, the orientation of the measured surface in space can be expressed as six variations: rotation about the X-axis, rotation about the Y-axis, rotation about the Z-axis, translation along the X-direction, translation along the Y-direction, and translation along the Z-direction. The X, Y, and Z coordinates form an ideal coordinate system established on an ideal surface. The characteristics of a cylindrical surface typically include movement along the X-axis, Y-axis, and Z-axis. Movement deviations are derived from the runout data of the measured cylindrical surface, and the roundness and eccentricity of the cylindrical surface are separated from the runout data. The deviations along the X-axis, Y-axis, and Z-axis are calculated using the roundness and eccentricity. This represents the lower deviation of the cylinder along the X-axis. This represents the upper deviation of the cylinder along the X-axis. The lower deviation of the cylinder along the Y-axis This represents the upper deviation of the cylinder along the Y-axis. It is the lower deviation of the cylindrical surface along the Z-axis. This is the upper deviation of the cylindrical surface along the Z-axis. Before machining, the deviation of the cylindrical surface is within the tolerance control range of the part; this deviation range represents the machining error of the part, which can be expressed as the left and right limits of the screw rotation. The screw rotation along the X-axis can be expressed as... The screw in the Y-axis can be expressed as: The spinor in the Z-axis direction can be expressed as: The screw range model describes the form and position tolerance range of a part during the part design phase. After the part is machined, the machining error is fixed, meaning the deviation is a definite value, and the screw is no longer a range but a definite quantity. The features of the end face typically include rotation along the two X-axis and rotation along the Y-axis and Z-axis. The rotation angles along the X-axis, Y-axis, and Z-axis are calculated using flatness and tilt.

[0099]

[0100] This represents the lower difference in the rotation angle of the end face around the X-axis. This is the upper difference in the angle of rotation of the end face around the X-axis. The lower difference of the end face rotation angle around the Y-axis This is the upper difference of the end face rotating around the Y-axis. It is the lower deviation of the end face rotating around the Z-axis. This is the upper deviation of the end face rotation around the Z-axis. Before machining, the end face deviation is within the part's tolerance control range; this deviation range represents the part's machining error, which can be expressed as the left and right limits of the rotation. The rotation around the X-axis can be expressed as... The rotational spinor about the Y-axis can be expressed as The spinor of rotation about the Z-axis can be expressed as The screw range model also describes the form and position tolerance range of a part during the part design phase. After the part is machined, the machining error is fixed, meaning the deviation is a definite value, and the screw is no longer a range but a definite quantity.

[0101] In a preferred embodiment, the runout parameters include cylindrical runout parameters and end face runout parameters; the integrated assembly system also includes a parameter acquisition module 5, which includes:

[0102] The cylindrical surface acquisition unit is used to acquire the cylindrical surface feature parameters corresponding to the cylindrical surface of the reference single-disc rotor of the high-pressure rotor;

[0103] A cylindrical surface fitting unit is used to fit the cylindrical surface feature parameters to obtain the cylindrical surface runout parameters corresponding to the cylindrical surface of the reference single-disc rotor.

[0104] The end-face acquisition unit is used to acquire end-face feature parameters corresponding to the end face of the reference single-disc rotor of the high-voltage rotor based on the laser line device, so as to determine the end-face runout parameters corresponding to the end face of the reference single-disc rotor.

[0105] In a preferred implementation, the runout parameters include the coaxiality and roundness parameters corresponding to the reference single-disc rotor; the matrix establishment module includes:

[0106] The parameter separation unit is used to separate the coaxiality parameter and the roundness parameter based on the runout parameter;

[0107] The building unit is used to construct a spatial spinor evaluation model based on coaxiality and roundness parameters.

[0108] In the Jacobian matrix, the coordinate system orientation of each single rotor in the single rotor group is consistent, and the end face screw and cylindrical screw corresponding to each single rotor are error-transmitted in the tolerance direction based on the Jacobian matrix.

[0109] The error is described using the Jacobi spinor method, which allows the error to be separated from the error calculation. The error propagation process described in the error calculation can be simply understood as the propagation of "coefficients". Figure 4 The pose transfer diagram of the assembly error propagation algorithm is shown. The method of error propagation is described in the form of a Jacobian matrix:

[0110]

[0111] In the Jacobian matrix The rotation matrix represents the i-th coordinate system relative to the 0-th coordinate system. The i-th coordinate system is established on the mating surface of each compressor disk, and each compressor disk mating establishes two coordinate systems. The i-th coordinate system is established on the i / 2+1-th stage rotor. The 0-th coordinate system is the measurement and assembly reference for the entire high-pressure rotor. The orientation of the coordinate system is very important when determining the tolerance direction, and the orientation of the coordinate systems of each disk needs to be consistent. The orientation of the coordinate system affects the correctness of the subsequent tolerance fitting results.

[0112] The rotation matrix of the i-th coordinate system relative to the 0-th coordinate system can be described as:

[0113]

[0114] in, This describes the rotation θ of the i-th coordinate system relative to the 0-th coordinate system around the x-axis of the i-th coordinate system. i ° represents a right-handed coordinate system, with clockwise rotation being positive. The 0th coordinate system is the reference coordinate system for the final error.

[0115] in, This describes the rotation θ of the i-th coordinate system relative to the 0-th coordinate system around the Y-axis of the i-th coordinate system. i °, the θ i It is a right-handed coordinate system, with clockwise as the positive direction.

[0116] in, This describes the rotation θ of the i-th coordinate system relative to the 0-th coordinate system around the Z-axis of the i-th coordinate system. i °, the θ i This is a right-handed coordinate system, with clockwise as positive. The 0th coordinate system is the reference coordinate system for the final error. If the plane containing the tolerance does not conform to the direction of the final control tolerance, the tolerance needs to be projected onto the transfer path. This represents the projection of the tolerance onto the direction of the functional requirement.

[0117] The V1, V2, and V3 are composed of three column vectors. V1 is the projection of the X-axis direction vector of coordinate system i onto the three coordinate axes in the reference coordinate system. V2 is the projection of the Y-axis direction vector of coordinate system i onto the three coordinate axes in the reference coordinate system. V3 is the projection of the Z-axis direction vector of coordinate system i onto the three coordinate axes in the base coordinate system.

[0118] In a single disk of a high-pressure rotor, the tolerance projection direction remains unchanged, i.e.

[0119] W i n It is the translation vector of the nth coordinate system relative to the i-th coordinate system. Where:

[0120]

[0121] dx, dy, and dz are as follows, pointing from the origin of the last level coordinate system to the current i-th coordinate system.

[0122]

[0123] By measuring the runout of each stage of the disk, the spin error of a single disk can be obtained. Based on the transfer Jacobian matrix of each stage of the disk, the error required for the function can be calculated, namely the runout of the high-pressure rotor grate disk relative to the front journal.

[0124] The spin error of each disk stage can be divided into end face error and cylindrical surface error. The tolerance zone of the end face error is the region between two planes. The spin model of the end face deviates in three directions, the first being the deviation along the Z-axis, through t d1 This indicates that the range of variation is (k) wd1 -1)t d1 --k wd1 t d1 k wd1 Located between 0 and 1. The minimum value of the end face error is (k wd1 -1)t d1 The maximum value is k wd1 t d1 The end-face error is a positional error, typically expressed as parallelism relative to a reference. This positional error does not include end-face deformation or unevenness. Therefore, the screw model focuses primarily on the parallelism of the end faces.

[0125] The end face error also includes tilt in the X-axis direction. d1 Where a1 is the diameter of the cylinder containing the end face, and the tilt error range of the end face in the X direction can be described as ((k αd1 -1)t d1 / a1,kαd1 t d1 / a1). The k αd1 It lies between 0 and 1. When k αd1 When = 0, the tilt error of the end face in the X direction is (-t) d1 / a1,0). When k αd1 When = 1, the tilt error of the end face in the X direction is (0, -t) d1 / a1). When k αd1 When = -1, the tilt error of the end face in the X direction is (0, -t) d1 / a1).

[0126] The end face error also includes tilt in the Y-axis direction. d1 Where b1 is the diameter of the cylinder containing the end face, and the tilt error range of the end face in the Y direction can be described as ((k βd1 -1)t d1 / b1,k βd1 t d1 / b1). The k βd1 It lies between 0 and 1. When k βd1 When = 0, the tilt error of the end face in the X direction is (-t) d1 / b1,0). When k βd1 When = 1, the tilt error of the end face in the X direction is (0, -t) d1 / b1). When k βd1 When = -1, the tilt error of the end face in the X direction is (0, -t) d1 / b1).

[0127]

[0128] The spin error of each disk level also includes cylindrical error, the tolerance zone of which is a cylinder. The spin of the cylindrical error can be decomposed into spin in the X direction and spin in the Y direction, the range of which in the X direction is ((k ucb1 -1)t ucb1 ,k ub1 t cb1 ), the range in the Y direction is ((k vcb1 -1)t vcb1 ,k vb1 t cb1 The k ucb1 k represents the control coefficient for variation in the X direction. vcb1 This represents the control coefficient for variation in the Y direction. t ucb1 This represents the maximum eccentricity.

[0129]

[0130] Each individual disk can establish end face screw and cylindrical screw relative to the front end reference. The transfer of end face screw and cylindrical screw in the tolerance direction is achieved through a Jacobian matrix.

[0131] The integrated assembly system for high-voltage rotors in this embodiment reduces preparation time for high-voltage rotor assembly and measurement, thus improving assembly efficiency. It integrates the measurement and analysis process for the high-voltage rotor, evaluating the impact of the high-voltage rotor's form and position tolerance range on the high-voltage rotor assembly runout. It assesses whether the assembly runout meets the cumulative tolerance requirements, automatically determines whether the assembly is in place, and provides the optimal assembly phase for the high-voltage rotor. It assists process engineers in evaluating assembly process data to determine the current assembly status and predict changes in high-voltage rotor runout.

[0132] Example 3

[0133] See Figure 4 As shown, this embodiment provides an electronic device 30, including a processor 31, a memory 32, and a computer program stored in the memory 32 and executable on the processor 31. When the processor 31 executes the program, it implements the integrated assembly method of the high-pressure rotor in Embodiment 1. Figure 4 The electronic device 30 shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of the present invention.

[0134] The electronic device 30 may be in the form of a general-purpose computing device, such as a server device. The components of the electronic device 30 may include, but are not limited to: at least one processor 31, at least one memory 32, and a bus 33 connecting different system components (including memory 32 and processor 31).

[0135] Bus 33 includes a data bus, an address bus, and a control bus.

[0136] The memory 32 may include volatile memory, such as random access memory (RAM) 321 and / or cache memory 322, and may further include read-only memory (ROM) 323.

[0137] The memory 32 may also include a program / utility 325 having a set (at least one) of program modules 324, including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0138] The processor 31 executes various functional applications and data processing by running computer programs stored in the memory 32, such as the integrated assembly method of the high-pressure rotor in Embodiment 1 of the present invention.

[0139] Electronic device 30 can also communicate with one or more external devices 34 (e.g., keyboard, pointing device, etc.). This communication can be performed via input / output (I / O) interface 35. Furthermore, the model-generated device 30 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public network, such as the Internet) via network adapter 36. Network adapter 36 communicates with other modules of the model-generated device 30 via bus 33. Other hardware and / or software modules can be used in conjunction with the model-generated device 30, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems.

[0140] It should be noted that although several units / modules or sub-units / modules of the electronic device have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of the present invention, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0141] Example 4

[0142] This embodiment provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the integrated assembly method of the high-voltage rotor in Embodiment 1.

[0143] The readable storage medium may be more specifically adopted, including but not limited to: portable disk, hard disk, random access memory, read-only memory, erasable programmable read-only memory, optical storage device, magnetic storage device, or any suitable combination thereof.

[0144] In a possible implementation, the present invention can also be implemented as a program product comprising program code that, when the program product is run on a terminal device, causes the terminal device to execute the integrated assembly method for implementing the high-voltage rotor in Embodiment 1.

[0145] The program code for executing the present invention can be written in any combination of one or more programming languages. The program code can be executed entirely on the user device, partially on the user device, as a standalone software package, partially on the user device and partially on a remote device, or entirely on a remote device.

[0146] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A method for integrated assembly of a high-voltage rotor, characterized in that, Includes the following steps: Based on the runout parameters of the reference single-disc rotor of the high-pressure rotor, a spatial spin evaluation model is constructed. Based on the preset assembly position information of each single-disc rotor in the single-disc rotor group of the high-pressure rotor, a Jacobian matrix corresponding to the spatial spin evaluation model is established; wherein, one end of the single-disc rotor group is the reference single-disc rotor, and the other end is the target single-disc rotor. Based on the spatial spinor evaluation model and the Jacobian matrix, the predicted runout parameter range of the target single-disc rotor is determined; If the actual runout parameters of the assembled target single-disc rotor meet the predicted runout parameter range, then the assembly continues based on the target single-disc rotor; otherwise, the single-disc rotor assembly is adjusted.

2. The high-voltage rotor integrated assembly method as described in claim 1, wherein the runout parameters include cylindrical runout parameters and end-face runout parameters; characterized in that, The step of taking the runout parameters of the reference single-disc rotor based on the high-pressure rotor as preceded by: Collect the cylindrical feature parameters corresponding to the cylindrical surface of the reference single-disc rotor of the high-pressure rotor; The cylindrical feature parameters are fitted to obtain the cylindrical runout parameters corresponding to the cylindrical surface of the reference single-disc rotor. Using a laser line device, end-face feature parameters corresponding to the end face of the reference single-disc rotor of the high-voltage rotor are collected to determine the end-face runout parameters corresponding to the end face of the reference single-disc rotor.

3. The high-voltage rotor integrated assembly method as described in claim 1, characterized in that, The runout parameters include the coaxiality and roundness parameters corresponding to the reference single-disc rotor; establishing the Jacobian matrix corresponding to the single-disc rotor group based on the preset assembly position information of each single-disc rotor in the single-disc rotor group of the high-pressure rotor includes: Based on the runout parameter, the coaxiality parameter and the roundness parameter are separated; The spatial spinor evaluation model is constructed based on the coaxiality parameter and the roundness parameter.

4. The high-voltage rotor integrated assembly method as described in claim 1, characterized in that, The Jacobian matrix indicates that the coordinate system orientation of each single rotor in the single rotor group is consistent, and the end face screw and cylindrical screw corresponding to each single rotor are error-transmitted in the tolerance direction based on the Jacobian matrix.

5. A high-voltage rotor integrated assembly system, characterized in that, include: The model building module is used to build a spatial spin evaluation model based on the runout parameters of the reference single-disc rotor of the high-pressure rotor. The matrix establishment module is used to establish the Jacobian matrix corresponding to the spatial spin evaluation model based on the preset assembly position information of each single-disc rotor in the single-disc rotor group of the high-pressure rotor; wherein, one end of the single-disc rotor group is the reference single-disc rotor, and the other end is the target single-disc rotor. The analysis module is used to determine the predicted runout parameter range of the target single-disc rotor based on the spatial spinor evaluation model and the Jacobian matrix. The assembly optimization module is used to continue the assembly process based on the target single-disc rotor if the actual runout parameters of the assembled target single-disc rotor meet the predicted runout parameter range; otherwise, the single-disc rotor group is adjusted.

6. The high-voltage rotor integrated assembly system as described in claim 5, wherein the runout parameters include cylindrical runout parameters and end-face runout parameters; characterized in that, The integrated assembly system also includes a parameter acquisition module, which includes: The cylindrical surface acquisition unit is used to acquire the cylindrical surface feature parameters corresponding to the cylindrical surface of the reference single-disc rotor of the high-pressure rotor; A cylindrical surface fitting unit is used to fit the cylindrical surface feature parameters to obtain the cylindrical surface runout parameters corresponding to the cylindrical surface of the reference single-disc rotor. The end-face acquisition unit is used to acquire end-face feature parameters corresponding to the end face of the reference single-disc rotor of the high-voltage rotor based on the laser line device, so as to determine the end-face runout parameters corresponding to the end face of the reference single-disc rotor.

7. The high-voltage rotor integrated assembly system as described in claim 5, characterized in that, The runout parameters include the coaxiality and roundness parameters corresponding to the reference single-disc rotor; the matrix establishment module includes: The parameter separation unit is used to separate the coaxiality parameter and the roundness parameter based on the runout parameter; A construction unit is used to construct the spatial spinor evaluation model based on the coaxiality parameter and the roundness parameter.

8. The high-voltage rotor integrated assembly system as described in claim 5, characterized in that, The Jacobian matrix indicates that the coordinate system orientation of each single rotor in the single rotor group is consistent, and the end face screw and cylindrical screw corresponding to each single rotor are error-transmitted in the tolerance direction based on the Jacobian matrix.

9. An electronic 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 implements the high-voltage rotor integrated assembly method according to any one of claims 1-4.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the high-voltage rotor integrated assembly method according to any one of claims 1-4.

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