CN112958846A - Forming method for semi-closed complex deep inner cavity of sealing disc - Google Patents
Forming method for semi-closed complex deep inner cavity of sealing disc Download PDFInfo
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Abstract
The invention provides a method for forming a semi-closed complex deep inner cavity of a cantilever mounting edge of a sealing disc, which comprises the following steps of: step 1, dividing a part to be machined of a part into five cutting areas, and selecting a cutter with a structure corresponding to each cutting area; the part to be processed is a semi-closed complex deep inner cavity of a large arc cantilever mounting edge of a sealing disc; step 2, formulating working procedures and cutting areas corresponding to the working procedures; step 3, planning a low-stress cutting path and formulating cutting parameters; the surface roughness of the part processed by the forming method reaches Ra1.6um to Ra2.3um, the surface appearance is good, and meanwhile, the stress value of the part is-45 Mpa to-82 Mpa, and the stress is compressive stress, so that the fatigue resistance service life of the part is favorably prolonged; and the deformation of the matching surface and the mounting surface of the part is controlled between-0.03 mm and +0.05mm, and the allowable deformation range of-0.05 mm to +0.1mm is met.
Description
Technical Field
The invention belongs to the field of machining, particularly relates to a sealing disc prepared from a powder high-temperature alloy FGH99 material, and relates to a method for forming a semi-closed complex deep inner cavity of the sealing disc.
Background
A sealing disc material adopts domestic new-generation powder high-temperature alloy FGH99 for the first time, the material has low cutting coefficient, and the powder high-temperature alloy has larger cutting deformation than the conventional common high-temperature alloy (such as GH4169) under the cutting conditions of the same specification, the same parameters and the like. In the aspect of structure, compared with the sealing disc of the previous machine type, the front end of the sealing disc is provided with a semi-closed deep inner cavity structure formed by a large-arc cantilever mounting edge and a sealing disc body, and the semi-closed deep inner cavity structure has the characteristics that a low-stress cutting path is difficult to plan, the machining process is easy to deform, machining flutter occurs and the like when a part large-arc cantilever mounting edge is machined and the deep inner cavity is semi-closed due to the fact that the inner cavity is deep, the structure is complex and the whole rigidity is weak.
Disclosure of Invention
The invention aims to provide a method for forming a semi-closed complex deep inner cavity of a cantilever mounting edge of a sealing disc, which solves the problems of large mechanical stress, large processing deformation and large mechanical vibration of the existing method for processing the semi-closed complex deep inner cavity of the cantilever mounting edge of the sealing disc prepared from the powder high-temperature alloy FGH99 material; therefore, the invention provides a forming and processing method for semi-closed complex deep inner cavity of large arc cantilever mounting edge of sealing disc made of difficult-to-process powder superalloy material on the basis of meeting low machining stress and small processing deformation.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a method for forming a semi-closed complex deep inner cavity of a cantilever mounting edge of a sealing disc, which comprises the following steps of:
then, iteratively updating a cutting path and cutting parameters according to the obtained stress curve distribution and the corresponding stress actual value thereof until an optimal low-stress cutting path and cutting parameters are obtained;
and 4, performing final engineering machining application on the part to be machined of the part according to the optimal low-stress cutting path and the cutting parameters obtained in the step 3.
Preferably, in the step 1, the part to be machined of the part is divided into five cutting areas, and the specific method comprises the following steps:
dividing the part to be processed of the part into five cutting areas according to the structural characteristics of the molded surface of the part to be processed;
the five cutting areas are respectively: an end face groove type cutting region, a 45-degree concave type cutting region, a 65-degree concave type cutting region, a 90-degree concave type cutting region and a 120-degree reverse deep concave type cutting region.
Preferably, the end face groove-shaped cutting area is a radial area which takes the inner circle of the cantilever mounting edge as an initial position and takes the disc center of the sealing disc and the axial extension thereof as an end position;
the 45-degree inward concave cutting area takes the termination position of the end surface groove type cutting area as an initial position, takes a tangent line of the circular arc section of the disc body profile close to the disc center as a termination position, and the clockwise included angle between the tangent line and the disc center line is 45 degrees;
the 65-degree concave cutting region takes the ending position of a 45-degree concave cutting region as an initial position, takes a tangent line of the circular arc section of the disc body profile close to the disc center as an ending position, and the clockwise included angle between the tangent line and the disc center line is 65 degrees;
the 90-degree concave cutting area takes the ending position of the 65-degree concave cutting area as an initial position, takes a tangent line of the circular arc section of the disc body profile close to the disc center as an ending position, and the clockwise included angle between the tangent line and the disc center line is 90 degrees;
the 120 deg. reverse deep concave cutting region is the remaining region.
Preferably, in step 2, the established procedures are divided into: rough machining, semi-finish machining and finish machining;
the cutting area corresponding to each process is specifically as follows:
the rough cutting area is: an end face groove type cutting region, a 45-degree concave type cutting region, a 65-degree concave type cutting region and a 90-degree concave type cutting region;
semi-finished cutting area: an end face groove type cutting region, a 45-degree concave type cutting region, a 65-degree concave type cutting region, a 90-degree concave type cutting region and a 120-degree reverse deep concave type cutting region;
finish machining area: an end face pocket cutting region, a 45 ° female cutting region, a 65 ° female cutting region, a 90 ° female cutting region, and a 120 ° reverse deep female cutting region.
Preferably, the optimal low stress cutting path is:
the planned low-stress cutting path in rough machining is as follows:
the end face groove type cutting region is arranged along the profile, the 45-degree concave type cutting region is arranged along the profile, the 65-degree concave type cutting region is arranged along the profile, the 90-degree concave type cutting region is inserted and turned along the profile, and the cutting is carried out along the profile;
the planned low-stress cutting path in semi-finish machining is as follows:
an end face groove type cutting area feeds along a profile, a 45-degree concave type cutting area feeds along the profile, a 65-degree concave type cutting area feeds along the profile, a 90-degree concave type cutting area arranges cutters along the profile, and a 120-degree reverse deep concave type cutting area arranges cutters;
the planned low-stress cutting path in the fine machining process is as follows:
the end face groove type cutting area is fed along the profile, the 45-degree concave type cutting area is fed along the profile, the 65-degree concave type cutting area is fed along the profile, the 90-degree concave type cutting area is fed along the profile, and the 120-degree reverse deep concave type cutting area is fed.
Preferably, the optimal cutting parameters are as follows:
the cutting parameters established during rough machining are as follows:
cutting parameters of the end face groove type cutting area along the profile row cutter are as follows: the linear speed is 23-28m/min, the feeding amount is 0.15-0.25 mm/r, and the cutting depth is 1.5-2 mm;
cutting parameters of the 45-degree concave cutting region along the profile row cutter are as follows: linear velocity 15-20 m/min, feed amount 0.1-0.2 mm/r, cutting depth 1-1.5 mm;
cutting parameters of the 65-degree concave cutting area along the profile row cutter are as follows: linear velocity 15-20 m/min, feed amount 0.1-0.2 mm/r, cutting depth 1-1.5 mm;
cutting parameters of 90 ° concave cutting region along profile plunge: linear velocity 15-20 m/min, feed amount 0.1-0.2 mm/r, cutting depth 2 m; cutting parameters of the cutters arranged along the profile surface: linear velocity 15-20 m/min, feed amount 0.1-0.2 mm/r, cutting depth 2 mm; cutting parameters of the feed along the profile: linear velocity 15-20 m/min, feed amount 0.15-0.25 mm/r, cutting depth 0.5 mm;
the cutting parameters established during semi-finishing are as follows:
cutting parameters of the end face groove type cutting area along the profile feed: the linear velocity is 25-30 m/min, the feed rate is 0.15-0.2 mm/r, and the cutting depth is 1 mm;
cutting parameters of a 45-degree concave cutting area along a profile feed: the linear velocity is 25-30 m/min, the feed rate is 0.1-0.2 mm/r, and the cutting depth is 0.8 mm;
cutting parameters of a 65 ° concave cutting region along a profile feed: the linear velocity is 25-30 m/min, the feed rate is 0.1-0.2 mm/r, and the cutting depth is 0.8 mm;
cutting parameters of the 90-degree concave cutting region along the profile row cutter are as follows: linear speed is 20-25 m/min, feeding amount is 0.15-0.2 mm/r, and cutting depth is 0.8 mm;
cutting parameters of a 120-degree reverse deep concave type cutting area row cutter are as follows: linear speed is 20-25 m/min, feeding amount is 0.15-0.2 mm/r, and cutting depth is 0.8 mm;
the cutting parameters established during the fine machining are as follows:
cutting parameters of the end face groove type cutting area along the profile feed: linear velocity is 30-35 m/min, feed rate is 0.15-0.2 mm/r, and cutting depth is 0.3 mm;
cutting parameters of a 45-degree concave cutting area along a profile feed: linear velocity is 30-35 m/min, feed rate is 0.1-0.2 mm/r, and cutting depth is 0.2 mm;
cutting parameters of a 65 ° concave cutting region along a profile feed: linear velocity is 30-35 m/min, feed rate is 0.1-0.2 mm/r, and cutting depth is 0.2 mm;
cutting parameters of a 90-degree concave cutting area along a profile feed: linear velocity is 30-35 m/min, feed rate is 0.1-0.2 mm/r, and cutting depth is 0.2 mm;
cutting parameters of a 120-degree reverse deep concave type cutting area feed: the linear velocity is 28 to 33m/min, the feed rate is 0.1 to 0.2mm/r, and the cutting depth is 0.3 mm.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a method for forming a semi-closed complex deep inner cavity of a cantilever mounting edge of a sealing disc, which is a forming and processing method for the semi-closed complex deep inner cavity of a large-arc cantilever mounting edge of a sealing disc made of a powder high-temperature alloy material difficult to process on the basis of meeting the requirements of low machining stress and small machining deformation; the forming processing method specifically comprises the following steps: planning a low-stress cutting path, processing a cutter with a structure corresponding to a complex deep inner cavity, cutting parameters and the like; the surface roughness of the part processed by the forming method reaches Ra1.6um-Ra2.3um, and the surface appearance is good, so that the problem of mechanical vibration in the background technology can be solved; meanwhile, the stress value of the part is-45 MPa to-82 MPa, and the stress is compressive stress, so that the fatigue resistance service life of the part is prolonged, and the problem of large mechanical stress in the background technology is solved; and the deformation of the matching surface and the mounting surface of the part is controlled between-0.03 mm and +0.05mm, and the deformation range of-0.05 mm to +0.1mm allowed by design is met, so that the defect of large processing deformation in the background technology is overcome.
Drawings
FIG. 1 is a schematic view of a semi-enclosed complex deep cavity structure of a cantilever mounting edge of a sealing disc;
FIG. 2 is a schematic diagram of a semi-closed complex deep cavity cutting area division of a cantilever mounting edge of a sealing disc;
FIG. 3 is a schematic diagram of a tool for roughing cutting path planning and corresponding structure;
FIG. 4 is a schematic diagram of a tool for semi-finishing cutting path planning and corresponding structure;
FIG. 5 is a schematic view of a tool for finish machining cutting path planning and corresponding structure;
wherein, 1, the mounting edge of the sealing disc is in a semi-closed complex deep inner cavity structure; 2. an end face groove-shaped cutting area; 3. a 45 ° concave cutting region; 4. a 65 ° concave cutting region; 5. a 90 ° concave cutting region; 6. a 120 ° reverse deep concave cutting region; 7. roughly machining a groove-shaped cutting area of the end face along a profile row cutter cutting path; 8. roughly machining a 45-degree concave cutting area along a profile row cutter cutting path; 9. roughly machining a 65-degree concave cutting area along a profile row cutter cutting path; 10. roughly machining a 90-degree concave cutting area along a cutting path of a profile inserting lathe; 11. roughly machining a 90-degree concave cutting area along a profile feed cutting path; 12. the semi-finish machining end face groove type cutting area is along a profile feed cutting path; 13. semi-finishing the 45-degree concave cutting area along a profile feed cutting path; 14. semi-finishing a 65-degree concave cutting area along a profile feed cutting path; 15. semi-finishing the 90-degree concave cutting area along a profile row cutter cutting path; 16. semi-finishing a 120-degree reverse deep concave cutting area gang tool cutting path; 17. the finish machining end face groove type cutting area is along a profile feed cutting path; 18. finishing a 45-degree concave cutting area along a profile feed cutting path; 19. finishing a 65-degree concave cutting area along a profile feed cutting path; 20. finishing the 90-degree concave cutting area along a profile feed cutting path; 21. finish machining a feed cutting path of a 120-degree reverse deep concave cutting area; 22. a sealing disc; 23. r3 end face slot cutter; 24. turning an inner concave type groove cutter at an angle of 45 degrees; 25. turning an inner concave type groove cutter at 65 degrees; 26. turning an inner concave type groove cutter at 90 degrees; 27. r1.5 end face slotting tool; 28. carrying out 120-degree semi-finish turning on a reverse deep concave type hook groove cutter; 29. and (4) carrying out 120-degree finish turning on the reverse deep concave type hook groove cutter.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The invention relates to a forming processing method for a semi-closed complex deep inner cavity of a large arc cantilever mounting edge of a sealing disc made of a powder high-temperature alloy material difficult to process on the basis of meeting the requirements of low machining stress and small processing deformation.
As shown in fig. 1 to 5, the method for forming the semi-closed complex deep inner cavity of the cantilever mounting edge of the sealing disc provided by the invention comprises the following steps:
The end face groove type cutting area 2 is a radial area which takes the inner circle of the cantilever mounting edge as an initial position and takes the disc center of the sealing disc and the axial extension thereof as an end position;
the 45-degree inward concave cutting region 3 takes the termination position of the end face groove type cutting region 2 as an initial position, takes a tangent line of the circular arc section of the disc body profile close to the disc center as a termination position, and the clockwise included angle between the tangent line and the disc center line is 45 degrees;
the 65-degree concave cutting region 4 takes the ending position of the 45-degree concave cutting region 3 as an initial position, takes a tangent line of the circular arc section of the disc body profile close to the disc center as an ending position, and the clockwise included angle between the tangent line and the disc center line is 65 degrees;
the 90-degree concave cutting region 5 takes the termination position of the 65-degree concave cutting region 4 as an initial position, takes a tangent line of the circular arc section of the disc body profile close to the disc center as a termination position, and forms a clockwise included angle of 90 degrees with the disc center line;
the 120 deg. reverse deep concave cutting region 6 is the remaining region.
And selecting a cutter with a structure corresponding to each cutting area according to the divided surfaces to be processed of the five cutting areas.
The five cutting zones are shown schematically in fig. 2.
The rough machining cutting area is 2, 3, 4 and 5 areas divided in the step 1, the semi-finishing cutting area is 2, 3, 4, 5 and 6 areas divided in the step 1, and the finishing cutting area is 2, 3, 4, 5 and 6 areas divided in the step 1.
Firstly, setting an initial cutting path and cutting parameters for processing according to empirical cutting parameters, cutting areas divided in the step 1, cutters with structures corresponding to the cutting areas selected and used, and procedures and procedure processing areas established in the step 2, and testing and calculating the stress curve distribution of a part processing part and a stress actual value corresponding to the stress curve distribution after the processing is finished;
and then, iteratively updating the cutting path and the cutting parameters according to the obtained stress curve distribution and the corresponding stress actual value until the optimal low-stress cutting path and the optimal cutting parameters are obtained.
The optimal low-stress cutting path is as follows:
the cutting path of the semi-closed deep inner cavity 1 at the part mounting side during rough machining is cutting along the profile in the cutting sequence and the cutting direction of figure 3, namely, cutting along the profile, tool arranging along the profile and feeding along the profile; the cutting path in the semi-finish machining is cutting along the profile and cutting in the cutting sequence and the cutting direction shown in figure 4; the cutting path at finishing was a profile run in the cutting sequence and direction of fig. 5.
Table 1 shows the rough, semi-finish, finish cutting path planning and corresponding tool specifications. The cutting path planning and the tool schematic diagram of the corresponding structure of the three processes are shown in fig. 3 to 5.
TABLE 1 roughing, semi-finishing, finishing cutting path planning and corresponding tool specifications
The optimal cutting parameters are shown in the table 2:
TABLE 2 machining parameters of respective cutting paths for rough machining, semi-finish machining, and finish machining
After the machining is finished according to the optimal low-stress cutting path and the optimal cutting parameters, the surface roughness of the surface of the semi-closed complex deep inner cavity 1 of the mounting edge of the sealing disc is detected to be Ra1.6um-Ra2.3um, the stress value is detected to be-45 Mpa-82 Mpa, and the deformation of the part matching surface and the mounting surface is controlled to be-0.03 mm-0.05 mm. Namely, the processed part semi-closed complex deep inner cavity 1 has good surface appearance, small mechanical stress and compressive stress, and is beneficial to improving the anti-fatigue service life of the part; the deformation is controlled between-0.05 mm- +0.1mm allowed by design, and the design requirement is met.
Claims (6)
1. A forming method of a semi-closed complex deep inner cavity of a sealing disc is characterized by comprising the following steps:
step 1, dividing a part to be machined of a part into five cutting areas, and selecting a cutter with a structure corresponding to each cutting area; the part to be processed is a semi-closed complex deep inner cavity of a large arc cantilever mounting edge of a sealing disc;
step 2, formulating working procedures and cutting areas corresponding to the working procedures;
step 3, planning a low-stress cutting path and formulating cutting parameters; firstly, setting an initial cutting path and cutting parameters for processing according to empirical cutting parameters, cutting areas divided in the step 1 and cutters with structures corresponding to the selected cutting areas, procedures established in the step 2 and cutting areas corresponding to the procedures, and testing and calculating the stress curve distribution of a part processing part and a stress actual value corresponding to the stress curve distribution after the processing is finished;
then, iteratively updating a cutting path and cutting parameters according to the obtained stress curve distribution and the corresponding stress actual value thereof until an optimal low-stress cutting path and cutting parameters are obtained;
and 4, performing final engineering machining application on the part to be machined of the part according to the optimal low-stress cutting path and the cutting parameters obtained in the step 3.
2. The forming method of the semi-closed complex deep inner cavity of the sealing disc according to claim 1, wherein in the step 1, a part to be processed of the part is divided into five cutting areas, and the specific method is as follows:
dividing the part to be processed of the part into five cutting areas according to the structural characteristics of the molded surface of the part to be processed;
the five cutting areas are respectively: an end face groove type cutting region, a 45-degree concave type cutting region, a 65-degree concave type cutting region, a 90-degree concave type cutting region and a 120-degree reverse deep concave type cutting region.
3. The method of claim 2, wherein the end face groove cutting region is a radial region having an inner circle of the cantilever mounting edge as a starting position and a disc center of the sealing disc and an axial extension thereof as an ending position;
the 45-degree inward concave cutting area takes the termination position of the end surface groove type cutting area as an initial position, takes a tangent line of the circular arc section of the disc body profile close to the disc center as a termination position, and the clockwise included angle between the tangent line and the disc center line is 45 degrees;
the 65-degree concave cutting region takes the ending position of a 45-degree concave cutting region as an initial position, takes a tangent line of the circular arc section of the disc body profile close to the disc center as an ending position, and the clockwise included angle between the tangent line and the disc center line is 65 degrees;
the 90-degree concave cutting area takes the ending position of the 65-degree concave cutting area as an initial position, takes a tangent line of the circular arc section of the disc body profile close to the disc center as an ending position, and the clockwise included angle between the tangent line and the disc center line is 90 degrees;
the 120 deg. reverse deep concave cutting region is the remaining region.
4. The forming method of the semi-closed complex deep inner cavity of the sealing disc according to claim 1, wherein in the step 2, the established procedures are as follows: rough machining, semi-finish machining and finish machining;
the cutting area corresponding to each process is specifically as follows:
the rough cutting area is: an end face groove type cutting region, a 45-degree concave type cutting region, a 65-degree concave type cutting region and a 90-degree concave type cutting region;
semi-finished cutting area: an end face groove type cutting region, a 45-degree concave type cutting region, a 65-degree concave type cutting region, a 90-degree concave type cutting region and a 120-degree reverse deep concave type cutting region;
finish machining area: an end face pocket cutting region, a 45 ° female cutting region, a 65 ° female cutting region, a 90 ° female cutting region, and a 120 ° reverse deep female cutting region.
5. The forming method of the semi-closed complex deep inner cavity of the sealing disc according to claim 1, wherein the optimal low-stress cutting path is as follows:
the planned low-stress cutting path in rough machining is as follows:
the end face groove type cutting region is arranged along the profile, the 45-degree concave type cutting region is arranged along the profile, the 65-degree concave type cutting region is arranged along the profile, the 90-degree concave type cutting region is inserted and turned along the profile, and the cutting is carried out along the profile;
the planned low-stress cutting path in semi-finish machining is as follows:
an end face groove type cutting area feeds along a profile, a 45-degree concave type cutting area feeds along the profile, a 65-degree concave type cutting area feeds along the profile, a 90-degree concave type cutting area arranges cutters along the profile, and a 120-degree reverse deep concave type cutting area arranges cutters;
the planned low-stress cutting path in the fine machining process is as follows:
the end face groove type cutting area is fed along the profile, the 45-degree concave type cutting area is fed along the profile, the 65-degree concave type cutting area is fed along the profile, the 90-degree concave type cutting area is fed along the profile, and the 120-degree reverse deep concave type cutting area is fed.
6. The forming method of the semi-closed complex deep inner cavity of the sealing disc according to claim 1, wherein the optimal cutting parameters are as follows:
the cutting parameters established during rough machining are as follows:
cutting parameters of the end face groove type cutting area along the profile row cutter are as follows: the linear speed is 23-28m/min, the feeding amount is 0.15-0.25 mm/r, and the cutting depth is 1.5-2 mm;
cutting parameters of the 45-degree concave cutting region along the profile row cutter are as follows: linear velocity 15-20 m/min, feed amount 0.1-0.2 mm/r, cutting depth 1-1.5 mm;
cutting parameters of the 65-degree concave cutting area along the profile row cutter are as follows: linear velocity 15-20 m/min, feed amount 0.1-0.2 mm/r, cutting depth 1-1.5 mm;
cutting parameters of 90 ° concave cutting region along profile plunge: linear velocity 15-20 m/min, feed amount 0.1-0.2 mm/r, cutting depth 2 m; cutting parameters of the cutters arranged along the profile surface: linear velocity 15-20 m/min, feed amount 0.1-0.2 mm/r, cutting depth 2 mm; cutting parameters of the feed along the profile: linear velocity 15-20 m/min, feed amount 0.15-0.25 mm/r, cutting depth 0.5 mm;
the cutting parameters established during semi-finishing are as follows:
cutting parameters of the end face groove type cutting area along the profile feed: the linear velocity is 25-30 m/min, the feed rate is 0.15-0.2 mm/r, and the cutting depth is 1 mm;
cutting parameters of a 45-degree concave cutting area along a profile feed: the linear velocity is 25-30 m/min, the feed rate is 0.1-0.2 mm/r, and the cutting depth is 0.8 mm;
cutting parameters of a 65 ° concave cutting region along a profile feed: the linear velocity is 25-30 m/min, the feed rate is 0.1-0.2 mm/r, and the cutting depth is 0.8 mm;
cutting parameters of the 90-degree concave cutting region along the profile row cutter are as follows: linear speed is 20-25 m/min, feeding amount is 0.15-0.2 mm/r, and cutting depth is 0.8 mm;
cutting parameters of a 120-degree reverse deep concave type cutting area row cutter are as follows: linear speed is 20-25 m/min, feeding amount is 0.15-0.2 mm/r, and cutting depth is 0.8 mm;
the cutting parameters established during the fine machining are as follows:
cutting parameters of the end face groove type cutting area along the profile feed: linear velocity is 30-35 m/min, feed rate is 0.15-0.2 mm/r, and cutting depth is 0.3 mm;
cutting parameters of a 45-degree concave cutting area along a profile feed: linear velocity is 30-35 m/min, feed rate is 0.1-0.2 mm/r, and cutting depth is 0.2 mm;
cutting parameters of a 65 ° concave cutting region along a profile feed: linear velocity is 30-35 m/min, feed rate is 0.1-0.2 mm/r, and cutting depth is 0.2 mm;
cutting parameters of a 90-degree concave cutting area along a profile feed: linear velocity is 30-35 m/min, feed rate is 0.1-0.2 mm/r, and cutting depth is 0.2 mm;
cutting parameters of a 120-degree reverse deep concave type cutting area feed: the linear velocity is 28 to 33m/min, the feed rate is 0.1 to 0.2mm/r, and the cutting depth is 0.3 mm.
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| CN106735309A (en) * | 2016-11-29 | 2017-05-31 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of long cantilever web pattern part by numerical control machining deformation control method |
| CN107175474A (en) * | 2017-06-28 | 2017-09-19 | 贵州黎阳国际制造有限公司 | A kind of processing method of groove |
| CN109093130A (en) * | 2018-08-08 | 2018-12-28 | 西北工业大学 | Annular thin-wall parts roughing technique optimization method based on subregion processing |
| CN112404539A (en) * | 2020-09-28 | 2021-02-26 | 中国航发沈阳黎明航空发动机有限责任公司 | Blisk rough milling method |
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