A method of machining a part

Abstract

The application discloses a part machining method, comprising the following steps: obtaining a process reference hole position of a part; based on the process reference hole, respectively performing rough machining on a first surface and a second surface of the part; wherein the first surface and the second surface are two surfaces of two pairs of the part; performing natural aging treatment on the rough machined part to release rough machining deformation; respectively performing semi-finishing machining on the first surface and the second surface of the part; performing natural aging treatment on the semi-finished part to release semi-finishing machining deformation; respectively performing finishing machining on the first surface and the second surface of the part; and performing hole making on the finished part, which has the advantages of improving hole position degree of frame type parts and high hole making precision.

Description

Technical Field

[0001] This application relates to the field of machining technology, and in particular to a method for machining parts. Background Technology

[0002] Large integral frame parts have significant length, width, and height dimensions, requiring correspondingly large blanks. The blanks used for large aluminum alloy integral frames are typically pre-stretched plates or die forgings. The residual stress state formed during the heat treatment and quenching process is usually: compressive stress on the outer blank and tensile stress on the inner blank. During machining, as the outer material is removed, the residual stress rebalances, causing machining deformation. Typical forms of machining deformation include elongation / shortening deformation and overall warping deformation. This elongation / shortening deformation leads to positional deviations in the measured finished part, even when the part is machined to its theoretical position. The greater the residual stress in the blank and the larger the part's structural dimensions, the greater the resulting elongation / shortening deformation.

[0003] The positional tolerance of high-precision holes in large integral frame parts is usually ±0.15mm. However, traditional machining methods for integral frame parts are easily affected by the expansion and contraction deformation during machining, which will likely cause the high-precision holes to exceed the tolerance, resulting in low positional accuracy of the machined holes. Summary of the Invention

[0004] The main objective of this application is to provide a part processing method that aims to solve the technical problem of low precision hole position accuracy in existing integral frame part processing methods.

[0005] To achieve the above objectives, this application provides a part processing method, comprising the following steps:

[0006] Obtain the location of the process reference hole for the part;

[0007] Based on the process reference hole, the first and second surfaces of the part are rough-machined respectively; wherein, the first and second surfaces are two surfaces of two pairs of the part;

[0008] The rough-machined parts are subjected to natural aging treatment to release the rough-machined deformation;

[0009] After releasing the roughing deformation, the first and second surfaces of the part are semi-finished respectively;

[0010] The semi-finished parts are subjected to natural aging treatment to release the semi-finishing deformation;

[0011] After releasing the semi-finishing deformation, the first and second surfaces of the part are finished respectively;

[0012] Fine holes are made in the finished parts.

[0013] Optionally, obtaining the location of the process reference hole in the part includes:

[0014] Obtain the midpoint of the part in both the length and width directions, and establish a reference coordinate system with the midpoint as the origin;

[0015] The process reference hole is located near the middle part and on the X-axis and / or Y-axis of the reference coordinate system.

[0016] Optionally, the process of creating a precision hole in the finished part includes:

[0017] The precision-machined portions of the aforementioned parts undergo precision hole verification machining.

[0018] Collect the machining deformation data of the fine hole small batch verification process to obtain the machining deformation pattern of the fine holes at various positions of the part;

[0019] Based on the deformation law of the precision hole processing, each precision hole is compensated and adjusted, and the hole-making process is re-programmed. The precision hole batch processing is completed according to the hole-making process.

[0020] Optionally, the step of performing a small-batch verification process for precision holes on the finished part includes:

[0021] After machining all the remaining structural feature dimensions of the first and second surfaces of the part to the required position, the process reference hole is enlarged to correct the hole position.

[0022] According to the theoretical aperture position (X) j ,Y j The initial hole for finishing is defined as follows: j is the number of the finishing hole.

[0023] The parts after the initial drilling of the precision hole are subjected to natural aging treatment to release machining deformation;

[0024] Measure and record the actual hole position (X) of the initial fine hole. ij ,Y ij ); where i is the part number;

[0025] According to the theoretical hole position (X) j ,Y j Final hole for finishing.

[0026] Optionally, the theoretical aperture position (X) of the fine aperture is... j ,Y j In the process of preparing the initial hole, the following conditions must be met:

[0027] D-D1≥2δ max +β;

[0028] Where D is the diameter of the final fine hole; D1 is the diameter of the initial fine hole; δ max β represents the maximum machining deformation of the part; β represents the safety margin for the hole diameter when making the final hole.

[0029] Optionally, the step of performing natural aging treatment on the part after the initial drilling of the precision hole to release machining deformation must meet the following conditions:

[0030] During natural aging, the parts must be placed horizontally and not restrained by external forces. The aging time H ≥ 48 hours.

[0031] Optionally, collecting the machining deformation data of the small-batch verification machining of the precision holes to obtain the machining deformation patterns of the precision holes at various locations of the part includes:

[0032] Collect and organize the measured hole positions (X) ij ,Y ij (data);

[0033] The average measured hole position (X) of each precision hole j of the part was statistically analyzed and compiled. Ej Y Ej ), with the average hole position (X) Ej Y Ej X represents the machining deformation law of each precision hole j in the part; where X Ej =(X 1j +X 2j +X 3j +...+X nj ) / n, Y Ej =(Y 1j +Y 2j +Y 3j +...+Y nj ) / n, n=1,2,3....

[0034] Optionally, the step of compensating and adjusting each of the precision holes according to the deformation law of the precision hole processing, re-compiling the hole-making process, and completing the batch processing of precision holes according to the hole-making process includes:

[0035] The machining deformation law of each precision hole j of the part (X) Ej Y Ej The reverse pre-deformation method is used to compensate and adjust the hole-making process;

[0036] After compensation and adjustment, the hole position coordinates of each precision hole j in the part are obtained as follows (X jb ,Y jb ); where X jb =X j -(X Ej -X j ) = 2Xj -X Ej ;Y jb =Y j -(Y Ej -Y j ) = 2Y j -Y Ej ;

[0037] According to the hole position coordinates (X) after compensation adjustment for each precision hole jb ,Y jb The hole-making process is rewritten, and the precision hole machining is completed using the rewritten hole-making process.

[0038] Optionally, the method of reverse pre-deformation includes:

[0039] If the deformation pattern of the part during machining is a shortening deformation, then the adjustment direction of the hole-making machining program is to increase the hole position coordinate (X) of the hole-making machining program. jb ,Y jb );

[0040] If the deformation pattern of the part is elongation deformation, then the adjustment direction of the hole-making process is to reduce the hole position coordinate (X) of the hole-making process. jb ,Y jb ).

[0041] Optionally, the measured position (X) of the initial fine hole is measured and recorded. ij ,Y ij ),include:

[0042] The measured hole position (X) of the initial fine hole was measured and recorded using a coordinate measuring machine. ij ,Y ij ).

[0043] The beneficial effects that this application can achieve are as follows:

[0044] This application first rationally designs the position of the process reference hole (i.e., the machining origin) during part machining. The finishing hole is then made relatively late in the final finishing process of the overall frame part machining flow (i.e., finishing the second surface of the part). At this time, the removal of cutting material from the part has been basically completed, and the machining deformation generated after hole making is relatively small. The deviation of the finishing hole position caused by machining deformation is also relatively small, thereby reducing the impact of machining deformation on the hole position and improving the high position accuracy of the finishing hole. At the same time, natural aging is set before finishing hole making to release machining deformation. After natural aging, the finishing hole machining process will not generate machining deformation again because there is almost no material removal, thus eliminating the impact of the previous machining expansion and contraction deformation on the hole position. Therefore, this application can effectively improve the position accuracy of the finishing hole based on the timing optimization of finishing hole making and combined with two natural aging treatments. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0046] Figure 1 This is a schematic flowchart of a part processing method according to an embodiment of this application;

[0047] Figure 2 This is a schematic diagram showing the design of the precision hole position and process reference hole of the part in the embodiments of this application;

[0048] Figure 3 This is a schematic diagram of the reverse pre-deformation compensation adjustment of the hole position coordinates in the precision hole making process of the part in the embodiments of this application.

[0049] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0050] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0051] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0052] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0053] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0054] Example 1

[0055] Reference Figures 1-3 This embodiment provides a part processing method, including the following steps:

[0056] Obtain the location of the process reference hole for the part;

[0057] Based on the process reference hole, the first and second surfaces of the part are rough-machined respectively; wherein, the first and second surfaces are two surfaces of two pairs of the part;

[0058] The rough-machined parts are subjected to natural aging treatment to release the rough-machined deformation;

[0059] After releasing the roughing deformation, the first and second surfaces of the part are semi-finished respectively;

[0060] The semi-finished parts are subjected to natural aging treatment to release the semi-finishing deformation;

[0061] After releasing the semi-finishing deformation, the first and second surfaces of the part are finished respectively;

[0062] Fine holes are made in the finished parts.

[0063] Because traditional integral frame machining methods do not provide special treatment for machining high-position precision holes, if the high-position precision holes are machined to the correct position on the first surface of the finishing process, the hole positions of the high-position precision holes will likely be out of tolerance when the hole positions of the final finished part are measured due to the expansion and contraction deformation of the part during machining.

[0064] Therefore, in this embodiment, the process reference hole position (i.e., the machining origin) is first reasonably designed during part machining. The finishing hole is only started relatively late in the final finishing process of the overall frame part machining process (i.e., finishing the second surface of the part). At this time, the removal of cutting material from the part has been basically completed, and the machining deformation generated after hole making is relatively small. The deviation of the finishing hole position caused by machining deformation is also relatively small, so as to reduce the influence of machining deformation on the hole position and improve the high position accuracy of the finishing hole. At the same time, natural aging is set before finishing hole making to release machining deformation. After natural aging, the finishing hole machining process will not generate machining deformation again because there is almost no material removal, thus eliminating the influence of the previous machining expansion and contraction deformation on the hole position. In addition, in this embodiment, the part finishing process is divided into two stages (i.e., semi-finishing and finishing), and the machining deformation is released through natural aging treatment in between, which greatly reduces the influence of subsequent machining deformation on the hole position. Therefore, this application can effectively improve the position accuracy of the finishing hole based on the timing optimization of finishing hole making and combined with two natural aging treatments.

[0065] It should be noted that natural aging refers to placing the workpiece outdoors or under natural conditions to allow the internal stress of the workpiece to be released naturally, thereby eliminating or reducing residual stress. Natural aging is the oldest aging method. It involves placing the component outdoors in the open air, relying on the forces of nature, and subjecting it to repeated temperature stresses from wind, sun, rain, and seasonal temperature changes over several months to several years. Under the overload caused by temperature stress, the residual stress is relaxed, thus stabilizing the dimensional accuracy.

[0066] As an optional implementation, obtaining the location of the process reference hole in the part includes:

[0067] Obtain the midpoint of the part in both the length and width directions, and establish a reference coordinate system with the midpoint as the origin;

[0068] The process reference hole is located near the middle part and on the X-axis and / or Y-axis of the reference coordinate system.

[0069] In this embodiment, the position of the process reference hole is reasonably designed, such as... Figure 2 As shown, the midpoint of the part's length and width directions is used as the machining origin. That is, the machining origin is close to the center of symmetry of the part's length and width directions. Process bosses are set at corresponding positions around the part, and the positions of the process reference holes are located on the process bosses. The positions of the process reference holes are located on the X-axis and / or Y-axis of the reference coordinate system, thereby distributing the part's machining expansion and contraction deformation evenly to the positive X, negative X, positive Y, and negative Y directions of the part. This avoids the accumulation of machining expansion and contraction deformation in the direction away from the machining origin of the part, and increases the maximum deviation value of the high positional feature measurement in the direction away from the machining origin of the part.

[0070] As an optional implementation, the process of creating a precision hole in the finished part includes:

[0071] The precision-machined portions of the aforementioned parts undergo precision hole verification machining.

[0072] Collect the machining deformation data of the fine hole small batch verification process to obtain the machining deformation pattern of the fine holes at various positions of the part;

[0073] Based on the deformation law of the precision hole processing, each precision hole is compensated and adjusted, and the hole-making process is re-programmed. The precision hole batch processing is completed according to the hole-making process.

[0074] In this embodiment, when making precision holes, a small batch of parts is first selected for verification processing (e.g., 3-10 parts). Then, the processing deformation data of this batch is collected to obtain the deformation law of precision hole processing. Based on this law, each precision hole can be compensated and adjusted, and the hole making processing program is re-programmed. Based on the re-programmed hole making processing program, the batch production processing of precision holes is completed. The addition of verification and compensation adjustment links can further improve the positional accuracy of precision hole processing.

[0075] As an optional implementation, the step of performing a small-batch verification process for precision holes on the finished part includes:

[0076] After machining all the remaining structural feature dimensions of the first and second surfaces of the part to the required position, the process reference hole is enlarged to correct the hole position.

[0077] According to the theoretical aperture position (X) j ,Y j The initial hole for finishing is defined as follows: j is the number of the finishing hole.

[0078] The parts after the initial drilling of the precision hole are subjected to natural aging treatment to release machining deformation;

[0079] Measure and record the actual hole position (X) of the initial fine hole. ij ,Y ij ); where i is the part number;

[0080] According to the theoretical hole position (X) j ,Y j Final hole for finishing.

[0081] In this embodiment, the theoretical hole position (X) is first determined. j ,Y j The initial fine hole is prepared, and then natural aging treatment is performed to release machining deformation. At the same time, the measured hole position (X) of the initial fine hole is collected. ij ,Y ij ) data, and theoretical pore location (X j ,Yj This involves comparing the data with the machining deformation data collected from the small-batch verification machining of precision holes, and finally comparing the data with the theoretical hole position (X). j ,Y j The final hole can be prepared by finishing the hole. Here, "according to the theoretical hole position (X)" j ,Y j The machining sequence for "finishing the hole and finalizing the hole" must be arranged after the process of releasing machining deformation through natural aging. This is because the machining deformation of the part has been fully released before the finishing hole size is achieved, according to the theoretical hole position (X). j ,Y j After precision hole making, the hole position deviation caused by the expansion and contraction deformation of the part during machining is eliminated. Furthermore, since the amount of material removed during the hole making process is almost negligible, no new machining deformation will be generated. This effectively improves the precision hole position accuracy of the verification batch parts and ensures the qualified delivery of the verification batch parts.

[0082] As an optional implementation, the theoretical aperture position (X) of the precision aperture is... j ,Y j In the process of preparing the initial hole, the following conditions must be met:

[0083] D-D1≥2δ max +β;

[0084] Where D is the diameter of the final fine hole; D1 is the diameter of the initial fine hole; δ max β represents the maximum machining deformation of the part; β represents the safety margin for the hole diameter when making the final hole.

[0085] In this embodiment, drilling according to the above conditions can effectively control errors and improve the positional accuracy of the precision hole. It should be noted that the final hole can be drilled using either a reaming + boring method or a boring method.

[0086] As an optional implementation, the step of performing natural aging treatment on the part after the initial drilling of the precision hole to release machining deformation must meet the following conditions:

[0087] During natural aging, the parts must be placed horizontally and not restrained by external forces. The aging time H ≥ 48 hours.

[0088] In this embodiment, when natural aging treatment is performed according to the above conditions, it can be ensured that the deformation of the parts during processing is fully and effectively released.

[0089] As an optional implementation, collecting the machining deformation data of the small batch verification machining of the precision holes to obtain the machining deformation patterns of the precision holes at various locations of the part includes:

[0090] Collect and organize the measured hole positions (X) ij ,Y ij (data);

[0091] The average measured hole position (X) of each precision hole j of the part was statistically analyzed and compiled. Ej Y Ej ), with the average hole position (X) Ej Y Ej X represents the machining deformation law of each precision hole j in the part; where X Ej =(X 1j +X 2j +X 3j +...+X nj ) / n, Y Ej =(Y 1j +Y 2j +Y 3j +...+Y nj ) / n, n=1,2,3....

[0092] In this embodiment, statistical data is collected based on the theoretical pore size (X). j ,Y j The measured hole position (X) after the deformation of the part has been fully released during machining. ij ,Y ij This allows us to obtain hole position deviation data under fixed influencing factors (residual stress state of the blank, part machining plan, theoretical position of the precision hole), and the measured hole position (X). ij ,Y ij The measurement results must be obtained after the part has undergone sufficient natural aging to fully release the machining deformation. Statistical analysis of the measured hole positions (X) is then used to determine the optimal placement. ij ,Y ij According to the above calculation formula, the measured average hole position (X) of each precision hole j can be calculated. Ej Y Ej This allows for the determination of the average hole position (X). Ej Y Ej The deformation law of each precision hole j in the part during machining.

[0093] As an optional implementation, the step of compensating and adjusting each of the precision holes according to the deformation law of the precision hole processing, re-compiling the hole-making process program, and completing the batch processing of precision holes according to the hole-making process program includes:

[0094] The machining deformation law of each precision hole j of the part (X) Ej Y Ej The reverse pre-deformation method is used to compensate and adjust the hole-making process;

[0095] After compensation and adjustment, the hole position coordinates of each precision hole j in the part are obtained as follows (X jb ,Y jb ); where Xjb =X j -(X Ej -X j ) = 2X j -X Ej ;Y jb =Y j -(Y Ej -Y j ) = 2Y j -Y Ej ;

[0096] According to the hole position coordinates (X) after compensation adjustment for each precision hole jb ,Y jb The hole-making process is rewritten, and the precision hole machining is completed using the rewritten hole-making process.

[0097] In this embodiment, during the batch production stage, the hole position coordinates (X) of each precision hole j are adjusted directly according to the deformation pattern of each precision hole j in the part using a reverse pre-deformation compensation method. jb ,Y jb After the reverse pre-deformation compensation value of the hole position and the expansion and contraction deformation of the part during machining cancel each other out, the final precision hole position of the finished part is exactly the same as the theoretical hole position (X). j ,Y j The deviation is minimized, thereby improving the positional accuracy of the precision hole, shortening the overall manufacturing cycle of the part, and saving a CNC machining process.

[0098] It should be noted that during the small-batch verification processing stage, "according to the theoretical hole position (X) of the precision hole..." j ,Y j In the initial hole preparation and batch production stages, the hole position coordinates (X) are adjusted according to the compensation of each precision hole. jb ,Y jb The factors influencing hole position deviation (machining scheme design, residual stress state of the blank, and position of the precision hole) in "re-editing the hole-making machining program and using the re-edited hole-making machining program to complete the precision hole machining" are completely consistent. The measured hole position of the precision hole in the small batch verification machining stage after sufficient natural aging is also completely consistent with the measured hole position of the precision hole in the finished part state during the batch production machining stage. Therefore, the hole position deformation law of the initial hole of the verification batch parts can be used to reverse pre-deformation compensation to the hole position of the hole-making machining program of the batch production parts, so that the parts in the batch production stage are adjusted according to the compensated hole position (X). jb ,Y jb The hole is drilled so that the reverse pre-deformation compensation value and the expansion and contraction deformation of the part during machining cancel each other out, so that the final high-position precision hole position of the finished part is exactly the same as the theoretical hole position (X). j ,Y j ) has the smallest deviation.

[0099] As an optional implementation, the reverse pre-deformation method includes:

[0100] If the deformation pattern of the part during machining is a shortening deformation, then the adjustment direction of the hole-making machining program is to increase the hole position coordinate (X) of the hole-making machining program. jb ,Y jb );

[0101] If the deformation pattern of the part is elongation deformation, then the adjustment direction of the hole-making process is to reduce the hole position coordinate (X) of the hole-making process. jb ,Y jb ).

[0102] In this embodiment, by following the above-described reverse pre-deformation method, the reverse pre-deformation compensation value and the amount of expansion and contraction deformation during part processing can be mutually offset, resulting in the final finished part having a high-position precision hole position that exactly matches the theoretical hole position (X). j ,Y j ) has the smallest deviation.

[0103] As an optional implementation, the measured hole position (X) of the initial fine hole is measured and recorded. ij ,Y ij ),include:

[0104] The measured hole position (X) of the initial fine hole was measured and recorded using a coordinate measuring machine. ij ,Y ij ).

[0105] In this embodiment, a coordinate measuring machine is one of the most effective methods for measuring and obtaining dimensional data because it can replace various surface measuring tools and expensive combination gauges, and reduce the time required for complex measurement tasks from hours to minutes, an effect that other instruments cannot achieve. The measurement is accurate and meets the usage requirements.

[0106] Example 2

[0107] This embodiment provides a part processing method. Taking a 7050-T7452 aluminum alloy forging as an example, the residual stress of the part blank is relatively large, and the machining expansion and contraction deformation is also large. The precision hole processing flow is as follows:

[0108] The part processing flow during the small batch verification stage is as follows: rough machining of surfaces A and B of part → natural aging for 48 hours → semi-finishing of surfaces A and B of part → natural aging for 48 hours → finish machining of surfaces A and B of part (the initial hole is made in a later process of finishing the second surface) → natural aging for 48 hours → measuring and recording the actual hole position (X) using a coordinate measuring machine. ij ,Y ij → According to the theoretical hole position (X)j ,Y j The final hole size of the precision hole is in place; where A and B surfaces of the part refer to the first and second surfaces of the part, respectively.

[0109] By collecting and statistically verifying the machining deformation data of each precision hole (j=1,2,3,4) of 5 parts (i=1,2,3,4,5) in a batch, and following the machining method of this application, the hole position coordinates (X) of each precision hole in the batch production machining program after reverse pre-deformation compensation adjustment were obtained. jb ,Y jb ), see Table 1 below for specific data;

[0110] Table 1 Comparison of Precision Hole Deformation Pattern Data and Hole Position Data in the Hole-Making Program After Compensation and Adjustment

[0111]

[0112]

[0113] The parts processing flow for the batch production stage is as follows: rough machining of surfaces A and B of part → natural aging for 48 hours → semi-finishing of surfaces A and B of part → natural aging for 48 hours → finish machining of surfaces A and B of part (the finishing process for the second surface is later in the process, according to the adjusted hole-making program and hole position coordinates (X)). jb ,Y jb (The precision hole dimensions are in place).

[0114] Conclusion: The processing method provided in this application shortens the overall manufacturing cycle of the part by 56 hours (48 hours of natural failure + 8 hours of re-clamping to make the precision hole size in place), and the high position precision hole position measurement deviation meets ±0.1mm, which fully meets the design tolerance requirement of ±0.15mm.

[0115] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for machining a part, characterized in that, Includes the following steps: Obtain the location of the process reference hole for the part; Based on the process reference hole, the first and second surfaces of the part are rough-machined respectively; wherein, the first and second surfaces are two surfaces of two pairs of the part; The rough-machined parts are subjected to natural aging treatment to release the rough-machined deformation; After releasing the roughing deformation, the first and second surfaces of the part are semi-finished respectively; The semi-finished parts are subjected to natural aging treatment to release the semi-finishing deformation; After releasing the semi-finishing deformation, the first and second surfaces of the part are finished respectively; The process involves creating precision holes in the finished parts, including: performing precision hole verification machining on a portion of the finished parts; collecting machining deformation data from the small-batch verification machining to obtain the deformation patterns of the precision holes at various locations on the parts; compensating and adjusting each precision hole according to the deformation patterns, and re-programming the hole-making process; and completing the batch machining of precision holes according to the hole-making process. The process of verifying the precision holes of the finished parts includes: first, machining all remaining structural feature dimensions of the first and second surfaces of the parts to their positions; then, expanding the process reference holes to correct the hole positions; making the initial precision hole according to the theoretical hole positions; subjecting the parts to natural aging treatment after making the initial precision hole to release machining deformation; measuring and recording the actual hole positions of the initial precision hole; and making the final precision hole according to the theoretical hole positions. The step of collecting the machining deformation data of the small batch verification machining of the fine holes to obtain the machining deformation law of the fine holes at various positions of the part includes: collecting and organizing the data of the measured hole positions; statistically organizing the measured average hole position of each fine hole j of the part, and using the average hole position as the machining deformation law of each fine hole j of the part. The step of compensating and adjusting each precision hole according to the deformation law of precision hole processing, and re-compiling the hole-making process program, and completing the batch processing of precision holes according to the hole-making process program, includes: compensating and adjusting the deformation law of each precision hole of the part into the hole-making process program by using a reverse pre-deformation method; obtaining the hole position coordinates of each precision hole of the part after compensation and adjustment; re-compiling the hole-making process program according to the hole position coordinates of each precision hole after compensation and adjustment, and using the re-compiling hole-making process program to complete the precision hole processing.

2. The part processing method as described in claim 1, characterized in that, The process reference hole position of the part is obtained, including: Obtain the midpoint of the part in both the length and width directions, and establish a reference coordinate system with the midpoint as the origin; The process reference hole is located near the middle part and on the X-axis and / or Y-axis of the reference coordinate system.

3. The part processing method as described in claim 1, characterized in that, In the step of preparing the initial fine hole according to the theoretical hole position, the following conditions must be met: D-D1≥2δ max +b; Where D is the diameter of the final fine hole; D1 is the diameter of the initial fine hole; δ max β represents the maximum machining deformation of the part; β represents the safety margin for the hole diameter when making the final hole.

4. A part processing method as described in claim 1, characterized in that, The step of performing natural aging treatment on the part after the initial drilling of the precision hole to release machining deformation must meet the following conditions: During natural aging, the parts must be placed horizontally and not restrained by external forces. The aging time H ≥ 48 hours.

5. A part processing method as described in claim 1, characterized in that, The method of reverse pre-deformation includes: If the deformation pattern of the part is a shortening deformation, then the adjustment direction of the hole-making process is to increase the hole position coordinates of the hole-making process. If the deformation law of the part is elongation deformation, then the adjustment direction of the hole-making process is to reduce the hole position coordinates of the hole-making process.

6. A part processing method according to any one of claims 1-5, characterized in that, The measurement and recording of the measured hole position of the initial fine hole includes: The actual hole position of the fine hole initial hole was measured and recorded using a coordinate measuring machine.

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