CN118682422B - Machining technology of rear bearing seat with spatial oil injection hole - Google Patents
Machining technology of rear bearing seat with spatial oil injection holeInfo
- Publication number
- CN118682422B CN118682422B CN202410944581.8A CN202410944581A CN118682422B CN 118682422 B CN118682422 B CN 118682422B CN 202410944581 A CN202410944581 A CN 202410944581A CN 118682422 B CN118682422 B CN 118682422B
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- bearing seat
- rear bearing
- oil
- machining
- hole
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention discloses a processing technology of a rear bearing seat with a space oil injection hole, which comprises the following steps of S1, rough machining a rear bearing seat blank, clamping the rear bearing seat blank by taking the end face and the outer circle of a middle mounting edge as an axial reference surface and a radial reference circle, then processing an oil outlet window and an end face oil hole on the rear bearing seat blank so as to open the oil hole on a large end face, S2, welding a cover plate at the oil outlet window and a plug at the oil hole of a small end face, S3, finishing the end face, an inner hole and the outer circle of the rear bearing seat blank, semi-finishing the middle mounting edge, S4, adopting a processing electrode to electrically process the space oil injection hole, continuously injecting cooling liquid into an inner oil path of the rear bearing seat blank, S5, performing plugging welding on the outer opening of the space oil injection hole, S6, performing finish machining on the middle mounting edge to obtain the rear bearing seat with the space oil injection hole, and S7, performing flow and flow direction test on the rear bearing seat.
Description
Technical Field
The invention relates to the technical field of oil hole machining, in particular to a machining process of a rear bearing seat with a space oil injection hole.
Background
With the continuous improvement of aeroengine performance, the internal parts are complex in structure, high in functional integration level, particularly the rear bearing seat, small in cavity size, complex in internal oil way, and provided with a plurality of oil injection holes (with the size of phi 0.5-phi 1.2 mm), so that lubricating oil is quantitatively and directionally injected to other parts through the oil injection holes to lubricate and cool. Therefore, the processing quality of the oil spraying holes on the rear bearing seat can directly influence the results of the oil flow rate and the oil flow direction of the rear bearing seat.
At present, in the bearing seat machining process, machining of an oil spray hole is carried out simultaneously, the oil spray hole on the bearing seat is realized through electric machining, a machining electrode is usually machined to penetrate into an oil path from the inner part of a part cavity, lubricating oil is sprayed out of the oil spray hole through the oil path, but a space oil spray hole on a rear shaft seat is positioned in the middle part of the part, the machining electrode cannot be machined from the inner part of the part cavity, the machining electrode can only be firstly machined to the oil path from the outer part of the cavity, then passes through the oil path to be machined into the part cavity, and then the outer part of the part cavity is plugged, so that after the oil spray hole is machined, the outer side of the oil spray hole is plugged by adopting a welding process, the welding process is influenced, the rear bearing seat is deformed in the machining process, so that the precision size and the form and position tolerance cannot meet the design requirements, secondly, because the machining electrode is machined from the outer part of the cavity, cooling liquid cannot be led to the machining part, the machining electrode has abnormal discharge, the arc discharge phenomenon is generated, carbon deposition and burning are caused, and the aperture value is seriously ultra-bad.
Disclosure of Invention
The invention provides a processing technology of a rear bearing seat with a space oil spray hole, which aims to solve the technical problems that the existing rear bearing seat is deformed in the processing process and the space oil spray hole is unqualified in processing.
According to one aspect of the invention, a process for machining a rear bearing seat with a spatial oil spray hole is provided, and specifically comprises the following steps of S1, rough machining is carried out on a rear bearing seat blank, then the rear bearing seat blank is clamped by taking the end face and the outer circle of a middle mounting edge as an axial reference face and a radial reference circle, the large end face of the rear bearing seat blank faces upwards, an oil outlet window and an end face oil hole are machined in the rear bearing seat blank so that the oil hole on the large end face of the rear bearing seat blank is opened, a cover plate is welded at the oil outlet window, a plug is welded at the oil hole of the small end face of the rear bearing seat blank, S3, finish machining is carried out on the end face, the inner hole and the outer circle of the rear bearing seat blank, semi-finish machining is carried out on the middle mounting edge to remove welding deformation, S4, a machining electrode is adopted to electrically process the spatial oil spray hole which penetrates through an inner oil passage to be communicated to the inner cavity of the rear bearing seat blank from the outer side of the rear bearing seat blank, meanwhile, cooling liquid is continuously injected into the inner oil passage of the rear bearing seat blank through the oil hole on the large end face of the rear bearing seat blank in the electrical machining process, S5 is carried out on the outer side opening of the spatial oil hole, the oil spray hole is welded at the oil hole is carried out, the inner side of the oil hole is subjected to finish machining, the end face, the oil spray hole is subjected to finish machining is carried out, the oil hole is arranged at the inner side, the oil hole mounting hole is subjected to finish machining, the inner hole is and the inner mounting hole is subjected to finish machining, the oil hole is subjected to finish machining, and the inner machining, the oil through the inner machining through the inner oil hole is and the inner oil hole is used to machine and the inner cylinder through an inner oil clamp surface.
As a further improvement of the above technical scheme:
Further, in the step S4, the diameter of the machining electrode is 0.5mm, and the aperture value of the space oil spray hole is phi 0.57 mm-phi 0.59mm.
Further, in step S4, the machining depth of the electric machining is 30mm.
Further, the cooling liquid in step S4 is deionized water.
Further, the step S3 and the step S4 also comprise the step of carrying out finish machining on the side boss of the rear bearing seat blank, the outer machining part of the space oil spray hole on the rear bearing seat blank and the mounting hole on the middle mounting edge.
Further, a step of electrically machining a side oil spray hole communicated with the internal oil way from the inner cavity of the rear bearing seat by adopting a machining electrode is further included between the step S6 and the step S7.
Further, a step of heat treatment is carried out on the rear bearing seat blank between the step S2 and the step S3.
Further, the step of firstly carrying out rough machining on the rear bearing seat blank comprises the specific steps of firstly carrying out rough machining on the large end face, the small end face, the middle mounting edge, the inner hole and the outer circle of the rear bearing seat blank.
Further, in step S4, a machining allowance of 0.1mm is left after the intermediate mounting edge is semi-finished.
Further, the rear bearing seat comprises a plurality of space oil spray holes, and the plurality of space oil spray holes are distributed at intervals along the circumferential direction of the rear bearing seat.
The invention has the following beneficial effects:
The invention relates to a processing technology of a rear bearing seat with a space oil injection hole, which comprises the steps of firstly, rough processing a rear bearing seat blank, clamping the rear bearing seat blank by taking the end face and the outer circle of a middle mounting edge as an axial reference face and a radial reference circle, enabling the large end face of the rear bearing seat blank to face upwards, then processing an oil path window and an end face oil hole on the rear bearing seat blank, opening the oil hole on the large end face of the rear bearing seat blank, thereby providing an inlet for injection of cooling liquid, welding a cover plate at the oil path window, welding a plug at the oil hole on the small end face of the rear bearing seat blank, ensuring that an internal oil path is qualified, finishing the end face, an inner hole and the outer circle of the rear bearing seat blank, and semi-finishing the middle mounting edge to remove welding deformation and ensure the processing precision in the subsequent electric processing, adopting a machining electrode to electrically machine a space oil spray hole penetrating through an internal oil way to be communicated with an inner cavity of a rear bearing seat blank from the outer side of the rear bearing seat blank, simultaneously continuously injecting cooling liquid into the internal oil way of the rear bearing seat blank through an oil hole on the large end face of the rear bearing seat blank in the electric machining process so as to ensure a good electric machining environment, avoid carbon deposition and burning of machining parts, realize cooling and chip removal, seal and weld an outer opening of the space oil spray hole, and because the outer opening of the space oil spray hole is close to a middle mounting edge, the reference on the middle mounting edge can be influenced, finish machining is carried out on the middle mounting edge so as to remove welding deformation, ensure that the sizes of an axial reference plane and a radial reference circle are qualified, thereby obtaining the rear bearing seat with the space oil spray hole, carrying out flow and flow direction test on the rear bearing seat so as to check whether the rear bearing seat is qualified or not, the large end face of the rear bearing seat blank faces upwards, the oil hole of the large end face of the rear bearing seat blank is opened, cooling liquid is injected into the oil hole of the large end face of the rear bearing seat blank in the electric machining process, carbon deposition and burning of machining parts are avoided, the space oil injection holes are qualified in machining, the process route is optimized, after the space oil injection holes are machined, the middle mounting edge is finished, reference deformation caused by welding and plugging of the outer side opening of the space oil injection holes is eliminated, the machining qualification rate of the rear bearing seat with the space oil injection holes is greatly improved, and the rear bearing seat is high in practicability and suitable for wide popularization and application.
In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is a block diagram of steps in a process for machining a rear bearing housing with a spatial oil jet in accordance with a preferred embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a rear bearing block blank in a process for machining a rear bearing block with a spatial oil jet in accordance with a preferred embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a rear bearing housing in a process of manufacturing the rear bearing housing having a spatial oil jet hole according to a preferred embodiment of the present invention.
Detailed Description
Embodiments of the invention are described in detail below with reference to the attached drawing figures, but the invention can be practiced in a number of different ways, as defined and covered below.
S1, rough machining is carried out on a rear bearing seat blank, then the rear bearing seat blank is clamped by taking the end face and the outer circle of a middle mounting edge as an axial reference surface and a radial reference circle, the large end face of the rear bearing seat blank faces upwards, and then an oil outlet window and an end face oil hole are machined on the rear bearing seat blank, so that the oil hole on the large end face of the rear bearing seat blank is opened; the method comprises the steps of S2, welding a cover plate at an oil way window, welding a plug at an oil hole of a small end face of a rear bearing seat blank, S3, finishing the end face, an inner hole and an outer circle of the rear bearing seat blank, and semi-finishing an intermediate mounting edge to remove welding deformation, S4, adopting a machining electrode to electrically machine a space oil hole penetrating through an inner oil way to be communicated with an inner cavity of the rear bearing seat blank from the outer side of the rear bearing seat blank, simultaneously, continuously injecting cooling liquid into the inner oil way of the rear bearing seat blank through the oil hole on the large end face of the rear bearing seat blank in the electric machining process, S5, performing plugging welding on an outer opening of the space oil hole, wherein the outer opening of the space oil hole is close to the intermediate mounting edge, S6, finishing the intermediate mounting edge to remove welding deformation, guaranteeing that the sizes of an axial reference surface and a radial reference circle are qualified, and obtaining the rear bearing seat with the space oil hole, and S7, and performing flow and flow direction tests on the rear bearing seat to check whether the rear bearing seat is qualified. It should be understood that electrical machining refers to electrical discharge machining. It should be appreciated that the axis of the spatial oil jet does not pass through the centerline of the rear bearing block.
As shown in fig. 1 to 3, in particular, the processing technology of the rear bearing seat with the space oil spray hole of the invention firstly carries out rough processing on a rear bearing seat blank, then clamps the rear bearing seat blank by taking the end face and the outer circle of the middle mounting edge as an axial reference face and a radial reference circle, and makes the large end face of the rear bearing seat blank face upwards, then processes an oil outlet window and an end face oil hole on the rear bearing seat blank so as to open the oil hole of the large end face of the rear bearing seat blank, thereby providing an inlet for injection of cooling liquid, welding a cover plate at the oil outlet window, welding a plug at the oil hole of the small end face of the rear bearing seat blank, ensuring the qualification of an internal oil way, carrying out finish processing on the end face, an inner hole and the outer circle of the rear bearing seat blank, and carrying out semi-finish processing on the middle mounting edge so as to remove welding deformation and ensure the processing precision in the subsequent electric processing, adopting a machining electrode to electrically machine a space oil spray hole penetrating through an internal oil way to be communicated with an inner cavity of the rear bearing seat blank from the outer side of the rear bearing seat blank, simultaneously continuously injecting cooling liquid into the internal oil way of the rear bearing seat blank through an oil hole on the large end face of the rear bearing seat blank in the electric machining process so as to ensure good electric machining environment, avoid carbon deposition and burning of machining parts, realize cooling and chip removal, seal and weld an outer opening of the space oil spray hole, and because the outer opening of the space oil spray hole is close to a middle mounting edge, the datum on the middle mounting edge can be influenced, finish machining is carried out on the middle mounting edge so as to remove welding deformation, ensure that the sizes of an axial datum plane and a radial datum circle are qualified, thereby obtaining the rear bearing seat with the space oil spray hole, and carrying out flow and flow direction test on the rear bearing seat, according to the technical scheme, whether the rear bearing seat blank is qualified or not is checked, the clamping mode is optimized and improved, the large end face of the rear bearing seat blank faces upwards, the oil hole of the large end face of the rear bearing seat blank is opened, cooling liquid is injected into the oil hole of the large end face of the rear bearing seat blank in the electric machining process, carbon deposition and burning of machining parts are avoided, the space oil spray hole is qualified in machining, the process route is optimized, the middle mounting edge is finished after the space oil spray hole is machined, reference deformation caused by welding and plugging of the outer side opening of the space oil spray hole is eliminated, the machining qualification rate of the rear bearing seat with the space oil spray hole is greatly improved, and the rear bearing seat is high in practicability and suitable for wide popularization and application. It should be understood that the end surface oil holes include an oil hole on the large end surface and an oil hole on the small end surface, and in this embodiment, only the oil hole on the small end surface is blocked, and the oil hole on the large end surface is opened during the processing.
It should be understood that the conventional oil spraying hole is finished to the parts before the electric machining to ensure the machining precision of the oil spraying hole, and during the electric machining, the machining electrode enters the machining from the inner cavity of the bearing seat, no welding procedure exists after the electric machining is finished, the part standard is not deformed, and the space oil spraying hole is required to be welded to seal the outer opening of the space oil spraying hole after the electric machining is finished, so that the part standard is deformed.
It should be appreciated that in this embodiment, after rough machining is performed on the rear bearing seat blank, that is, the end face and the outer circle of the middle mounting edge are used as the axial reference face and the radial reference circle to clamp the rear bearing seat blank, so as to prepare for deformation and repair of the part in the subsequent machining process, if the end face and the outer circle of the middle mounting edge are not used as the axial reference face and the radial reference circle to clamp the rear bearing seat blank, in the subsequent machining process, when the outer opening of the oil hole of the welding space cannot be ensured, the main deformation of the rear bearing seat blank is concentrated on the middle mounting edge, and further the deformation of the rear bearing seat blank cannot be eliminated, so that the machining of the rear bearing seat blank is disqualified.
It should be understood that after the flow and flow direction test is performed on the conventional oil spray hole, the flow and flow direction can be guaranteed to be qualified through repairing the oil spray hole, the diameter of an electric machining electrode is about 0.04 smaller than the aperture value, but after the flow and flow direction test is performed on the space oil spray hole, the flow and flow direction can not be guaranteed to be qualified through repairing, so that the space oil spray hole must be guaranteed to be qualified in one-time machining, and the machining difficulty is high.
In this example, in step S4, the diameter of the working electrode is 0.5mm, and the aperture value of the spatial oil jet is phi 0.57 mm-phi 0.59mm. It should be understood that the diameter of the machining electrode which is commonly adopted for conventionally machining the hole with the diameter of phi 0.57-phi 0.59mm is 0.55mm, but because the hole of the space oil spraying hole is too long, the electrode swing amount is large during machining, if the machining electrode with the diameter of 0.55mm is still adopted for machining, the hole diameter can be machined to be 0.67mm, the hole diameter value is unqualified, and the machining electrode with the diameter of 0.5mm is adopted for machining, so that the hole diameter value of the oil spraying hole can be ensured to be stabilized at the diameter of phi 0.57-phi 0.59mm, the flow and flow direction test is ensured to be qualified, and the machining efficiency is improved.
In this embodiment, in step S4, the machining depth of the electric machining is 30mm. It should be appreciated that machining the electrode requires continuous rotary reaming after the machining depth is maintained after machining the through-space injector hole. It should be appreciated that the hole depth of the spatial oil jet is typically 18mm, and the machining depth is made to be 30mm, so that during the electro-machining process, when the machining electrode penetrates through the spatial oil jet and the machining depth of 30mm is maintained, that is, the worn electrode during the machining of the hole is already deep into the inner cavity of the rear bearing seat blank, the machined part of the machining electrode for reaming the spatial oil jet is not worn, thereby achieving the purpose of reaming. It will be appreciated that conventional machining depths are typically 21mm, i.e. machining depths of up to Kong Shenchang mm, but this machining depth can result in the machined portion of the machined electrode having been lost during the drilling process, so that the diameter of the machined electrode is too small for the purpose of reaming. Optionally, in an embodiment, the diameter of the machining electrode is 0.5mm, and the machining depth is 30mm, so that the aperture value of the oil spray hole is stabilized at phi 0.57-phi 0.59mm, and the flow direction are qualified by one-time machining of the space oil spray hole.
In this embodiment, the cooling liquid in step S4 is deionized water. Specifically, deionized water has higher purity degree for deionized water can not cause extra pollution or corruption to part and processing electrode in the electrical machining process, is favorable to improving machining precision and surface quality, has reduced the production of electrostatic interference and electrochemical reaction, helps keeping the stability in the course of working, and in addition, deionized water can absorb the heat rapidly and take away the heat that produces in the point course of working, reduces the part deformation.
In the embodiment, the step S3 and the step 4 further comprise the step of carrying out finish machining on the side boss of the rear bearing seat blank, the outer machining part of the space oil spray hole on the rear bearing seat blank and the mounting hole on the middle mounting edge. Specifically, the machining precision of the space oil spray hole is ensured by carrying out finish machining on the side boss of the rear bearing seat blank, the outer machining part of the space oil spray hole on the rear bearing seat blank and the mounting hole on the middle mounting edge. It should be understood that the positions of the outer openings of the space oil spray holes have a positional relationship, so that the machining positions of the outer openings of the space oil spray holes are accurate after the sizes of the positions are qualified, and the machining precision of the space oil spray holes is guaranteed.
In the embodiment, the step S6 and the step S7 further comprise the step of electrically machining a side oil spray hole communicated with the internal oil way from the inner cavity of the rear bearing seat by adopting a machining electrode. Specifically, after the processing of the space oil spray holes is realized, the side oil spray holes are processed again, so that the processing of all the oil spray holes on the rear bearing seat is finished, and the follow-up flow and flow direction test is ensured to be qualified. It should be appreciated that the rear bearing housing includes a spatial oil jet and a side oil jet.
In the embodiment, the step of heat treatment is further included between the step S2 and the step S3. Specifically, the structure and the performance of the welded joint are improved, the welding residual stress is eliminated and reduced, the corrosion resistance of the welded joint is improved, and the plasticity and the toughness of the welded joint are improved by performing heat treatment after welding.
In the embodiment, the step of firstly carrying out rough machining on the rear bearing seat blank comprises the following steps of firstly carrying out rough machining on the large end face, the small end face, the middle mounting edge, the inner hole and the outer circle of the rear bearing seat blank. Specifically, through carrying out rough machining to big terminal surface, little terminal surface, middle installation limit, hole and the excircle of back bearing frame blank to take out unnecessary material, prepare for follow-up finish machining, improve material performance, even find the defect of back bearing blank, and be convenient for the conversion of processing benchmark.
In this embodiment, in step S4, a machining allowance of 0.1mm is left after the intermediate mounting edge is semi-finished. Specifically, a machining allowance of 0.1mm is reserved, so that welding deformation is removed through semi-finishing, machining precision is improved, reference deformation is removed for subsequent finishing, and preparation is made for ensuring that the part is qualified in machining.
In this embodiment, the rear bearing seat includes a plurality of spatial oil spray holes, and a plurality of spatial oil spray holes are arranged along the circumference interval of the rear bearing seat. Specifically, the rear bearing seat realizes quantitative and directional injection of lubricating oil to other parts through the plurality of space oil spray holes so as to lubricate and cool, so that the plurality of space oil spray holes are required to be sequentially machined in the machining process, the outer side openings of the space oil spray holes are welded and blocked after the machining is finished, and part reference deformation is necessarily caused after the plurality of times of welding, so that the part reference deformation is required to be removed through finish machining, and the qualified machining of the parts is ensured.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
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| CN202410944581.8A CN118682422B (en) | 2024-07-15 | 2024-07-15 | Machining technology of rear bearing seat with spatial oil injection hole |
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| CN202410944581.8A CN118682422B (en) | 2024-07-15 | 2024-07-15 | Machining technology of rear bearing seat with spatial oil injection hole |
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| CN118682422A CN118682422A (en) | 2024-09-24 |
| CN118682422B true CN118682422B (en) | 2025-10-24 |
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| CN119566722B (en) * | 2024-11-15 | 2025-10-10 | 中国航发沈阳黎明航空发动机有限责任公司 | A processing method for cantilever thin-walled weak rigidity parts |
| CN119748163B (en) * | 2025-01-20 | 2025-10-24 | 中国航发南方工业有限公司 | Bearing seat datum conversion method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114571185A (en) * | 2021-10-20 | 2022-06-03 | 重庆江增船舶重工有限公司 | Machining and detecting method of split type bearing seat |
| CN117020574A (en) * | 2023-07-14 | 2023-11-10 | 中国航发南方工业有限公司 | Processing method of aero-engine bearing casing and aero-engine bearing casing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102004057111A1 (en) * | 2004-11-26 | 2006-06-01 | Niles-Simmons Industrieanlagen Gmbh | Method for intermediate machining of waves |
| CN216894641U (en) * | 2022-06-01 | 2022-07-05 | 成都中科翼能科技有限公司 | Gas turbine bearing casing structure |
| CN118180801A (en) * | 2023-04-18 | 2024-06-14 | 湖南凯斯机械股份有限公司 | Machining process for rapidly machining bearing seat |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114571185A (en) * | 2021-10-20 | 2022-06-03 | 重庆江增船舶重工有限公司 | Machining and detecting method of split type bearing seat |
| CN117020574A (en) * | 2023-07-14 | 2023-11-10 | 中国航发南方工业有限公司 | Processing method of aero-engine bearing casing and aero-engine bearing casing |
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