CN115922250B - Processing method of hollow thin-walled skeleton parts with multi-angle composite surface structure - Google Patents
Processing method of hollow thin-walled skeleton parts with multi-angle composite surface structure Download PDFInfo
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Abstract
一种具有多角度复合型面结构的镂空薄壁特征骨架类零件加工方法，属于钛合金加工技术领域，其特征在于，采用配有专用工装的三轴数控线性机床加工具有特殊结构特征的骨架类零件的加工，在大幅提高生产效率的同时，极大的降低了生产成本，并提高了该类产品的市场经济效益。具体工艺流程为：1)、对铸造钛合金骨架毛坯进行表面处理后粗铣基准面；2)、找正并划出待加工工件骨架中心对称线一周及骨架卡头焊接位置；3)、将待加工工件压实在专用工装平台上；4)、精铣骨架卡头；5)、加工：6)、钻底孔；7)、攻丝通孔；8)、与配重块配磨；9)、刻字，检验，包装，运输。
A method for processing hollow thin-walled skeleton parts with multi-angle composite surface structure belongs to the field of titanium alloy processing technology. It is characterized by using a three-axis CNC linear machine tool equipped with special tooling to process skeleton parts with special structural characteristics, which greatly improves production efficiency while greatly reducing production costs and improving the market economic benefits of such products. The specific process flow is: 1) rough milling the reference surface after surface treatment of the cast titanium alloy skeleton blank; 2) aligning and marking the central symmetry line of the skeleton of the workpiece to be processed and the welding position of the skeleton clamp; 3) compacting the workpiece to be processed on the special tooling platform; 4) fine milling the skeleton clamp; 5) processing: 6) drilling the bottom hole; 7) tapping the through hole; 8) grinding with the counterweight block; 9) lettering, inspection, packaging, and transportation.
Description
Technical Field
The invention belongs to the technical field of titanium alloy processing, and particularly relates to a machining method of a hollowed-out thin-wall characteristic framework type titanium alloy part with a spatial multi-angle composite profile structure.
Background
TC6 titanium alloy is a material with excellent performance for aerospace, but is also a difficult-to-cut material. The TC6 titanium alloy is a martensite type alpha+beta two-phase heat strong titanium alloy, is the Ti-Al-Mo-Cr-Fe-Si titanium alloy which is most widely applied at present, has the nominal composition of Ti-6Al1.5Mo-2.5Cr-0.5Fe-0.3Si, can reach the use temperature of 450 ℃, and is widely applied to the aviation field. However, the machining of TC6 titanium alloy has the following difficulties:
a. The heat conductivity is low, only 8W2 (m 2 ℃) -1 is adopted, the heat generated in the machining process is not easy to dissipate, the cutting temperature is high in cutting, and the abrasion of the cutter is increased.
B. The high chemical activity and the high affinity, when the cutting temperature is high, the cutting and the cut surface layer are meshed with the cutter material to generate serious cutter sticking phenomenon, so that the cutter is severely stuck and worn, and the hard and brittle layers such as TiO 2, tiN, tiH and the like are generated by chemical reaction at the high temperature, and the cutter is extremely easy to wear due to hardening phenomenon generated by plastic deformation in the cutting process. During the cutting process, the cutter has great friction with the surfaces of the workpiece and the cutter and the cutting chips, so that the cutting force, the cutting heat and the deformation of the workpiece are increased, the cutter is worn, and the processing quality of the processed surface is also affected.
C. the low elastic modulus causes great rebound after deformation under load, thereby causing the titanium alloy part to deviate from the cutter in the machining process.
The TC6 titanium alloy skeleton of a certain model is a hollow thin-wall structural member with a space multi-angle composite profile structure, the requirement on dimensional accuracy is high, the machining difficulty is high, a five-axis linkage machining center is adopted for machining, although the requirement on the dimension and the shape and the position of the high accuracy can be achieved, the purchase cost of the five-axis linkage machining center is extremely high and is often 5-10 times that of the three-axis linkage machining center, the programming difficulty of the five-axis linkage machining center is high, the technical capability requirements on programming and operators are strict, and the equipment maintenance cost is high. In addition, the main body of the five-axis linkage machining center adopts an electric spindle system, has the characteristics of high rotating speed, high precision and low cutting capacity, and can machine parts with space profile polyhedron structures, but due to the flexible structural design of an actuating mechanism with high degree of freedom, the five-axis linkage machining center is difficult to apply larger radial cutting feed and axial cutting depth when machining titanium alloy materials with high hardness, and the defects of the aspects can be overcome only by smaller milling reduction amount and repeated circulating movement, so that the economic benefit is low for parts production without a certain quantity of mass production, and the five-axis linkage machining center is difficult to be applied to most machining factories.
Disclosure of Invention
In order to solve the problems, the invention provides a processing method of a hollowed-out thin-wall characteristic framework type part with a multi-angle composite profile structure, which can realize the processing of the framework type part with the characteristic on a three-axis linkage processing center, and greatly improves the market economic benefit of the product while greatly improving the production efficiency.
The technical scheme of the invention is as follows:
a processing method of a hollowed-out thin-wall characteristic framework type part with a multi-angle composite profile structure is characterized by adopting a triaxial numerical control linear machine tool with a special tool for processing, and the specific process is as follows:
1) Carrying out surface treatment (polishing, deburring, descaling and surface sand blasting) on the cast titanium alloy skeleton blank, and then roughly milling a reference surface A165, a reference surface A267, a reference surface B166 and a reference surface B268 in a shape surface milling mode, wherein the finish milling allowance is reserved for 2mm, and the planeness of each surface is +/-0.2 mm;
2) Aligning and drawing a circle of central symmetry line of a workpiece skeleton to be processed according to a drawing, and welding positions of skeleton chucks;
3) The method comprises the steps of cleaning a workpiece skeleton to be processed and a welding position of a skeleton clamping head by acetone, leveling a symmetrical central line, assembling according to the clamping head position line, spot welding and fixing, compacting the workpiece to be processed on a special tool platform by a pressing plate, welding all welding seams, and removing the pressing plate after the workpiece is completely cooled;
4) Aligning the center symmetry line, positioning according to the machining reference, finish milling the skeleton clamping head, ensuring the dimensional accuracy to be +/-0.1 mm and the symmetry to be 0.1mm;
5) Processing:
a. installing the framework on a special fixture, and fixing a framework chuck with a reference surface A165 facing upwards;
b. Milling the internal hollow structure according to the size, filling damping rubber into the non-machined hollow part, ensuring the drawing size, and ensuring the surface roughness to be less than 6.3, milling the outline of the skeleton according to the size in a contour milling mode, ensuring the drawing size, finely milling the shape surface in a shape surface milling mode according to a reference surface A165, ensuring the drawing size, ensuring the flatness to be 0.1mm and ensuring the symmetry to be 0.1mm;
c. The angle fixing plate is replaced, so that the tool datum is positioned on the datum plane A267, the profile is finely milled in a profile milling mode, the drawing size is ensured, the flatness is ensured to be 0.1mm, and the symmetry is ensured to be 0.1mm
D. turning over, mounting the framework on a special fixture, fixing the framework chuck according to the mark on the clamping bottom plate 1, and aligning with the reference surface B166 facing upwards;
e. Changing an angle fixing plate to enable a tool datum to be positioned on a datum plane B268, finish milling a molded surface in a form face milling mode, preserving the dimension of a drawing, preserving the flatness by 0.1mm and the symmetry by 0.1mm;
6) Drilling a bottom hole according to the dimension, and guaranteeing the dimension of a drawing;
7) Tapping the through hole;
8) The weight block is matched with the counterweight block, and interference fit is required;
9) And (5) carving, checking, packaging and transporting.
The part has one or more of the following features:
① The angle of adjacent characteristic space surfaces of the part is 5-10 degrees, and the sum of accumulated adjacent characteristic space surface angles in the same quadrant plane of a basic coordinate system of a machine tool is not more than 15 degrees;
② The minimum wall thickness of the part is 1-2 mm;
③ The part characteristic structure is provided with a closed-loop profile sinking, or a part which can not be subjected to direct back chipping treatment and is used for processing an internal corner can be generated in the processing process;
④ The surface roughness is required to reach Ra less than or equal to 3.2 mu m;
⑤ The proportion of the sum of projection areas of the hollow structures of the parts to the total surface area is 50% -80%.
The part is prepared from TC6 titanium alloy.
As a preferable technical scheme:
The special tool consists of a clamping bottom plate 1, a fixed bottom plate 2, an angle fixing plate 3, a rotating shaft 4 and a rotating shaft fixing seat 5, wherein:
The clamping bottom plate 1 is positioned above the fixed bottom plate 2, and the clamping bottom plate 1 is provided with a workpiece positioning pin hole 11 to be processed, the side wall of the clamping bottom plate 1 is provided with a clamping bottom plate positioning pin hole 33, the side wall of the fixed bottom plate 2 is provided with a fixed bottom plate positioning pin hole 34, and the angle fixed plate 3 is fixed between the clamping bottom plate positioning pin hole 33 and the fixed bottom plate positioning pin hole 34 through a positioning pin 31;
The side wall of the rotating shaft fixing seat 5 perpendicular to the installation plane is provided with a through hole, the rotating shaft fixing seat 5 is composed of an upper fixing seat 51 and a lower fixing seat 52, the upper fixing seat 51 is arranged on the lower surface of the clamping bottom plate 1, the lower fixing seat 52 is arranged on the upper surface of the fixing bottom plate 2, one side of the rotating shaft 4 is provided with an end head, and the other side of the rotating shaft is provided with an installation hole 42 for installing the anti-falling insert rod 41.
The rotary shaft fixing seat 5 is arranged at the center of the clamping platform of the machine tool, the side edges of the rotary shaft fixing seat 5 are parallel to the clamping bottom plate 1, the parallelism is smaller than 10 mu m, the lengths of two groups of mutually perpendicular sides are equal to the parallel edges of the clamping platform, and the error range is smaller than 1mm.
The triaxial numerical control linear machine tool is provided with a constant-temperature water chiller and a plate heat exchanger and is used for performing low-temperature cooling on cutting cooling liquid of the triaxial numerical control linear machine tool, and the temperature of the cutting liquid is ensured to be constant at 10+/-0.5 ℃.
And a pressurizing device is additionally arranged at a cutting fluid nozzle of the triaxial numerical control linear machine tool, so that machining cutting fluid enters a cutting position of a cutter in a high-pressure jet flow mode.
The beneficial effects of the invention are as follows:
1. The invention fundamentally solves the problem that a common triaxial numerical control linear machine tool is difficult to process a space multidimensional profile structural member through the design of a special tool. And through process design and frock location, shift the benchmark coordinate of part to customization frock on CAM software, also realized through once benchmark location, the order course of working of whole part has been accomplished to the high efficiency, has solved the problem of processing benchmark normalization.
2. The five-axis machine tool has the advantages that due to the structural reasons of equipment, when the parts are machined, the cutting depth of the main shaft is insufficient, the gravity cutting main shaft is adopted by the three-axis machine tool, the characteristics of low rotation speed and torque are realized, the machining modes of large cutting depth and large cutting feed can be realized, and although the one-time forming machining of a space polyhedron is difficult to realize, the machining time under the same working procedure can be effectively reduced by setting related machining parameters, and the programming difficulty and the number of program codes are reduced.
3. The scheme of the invention can ensure that the dimensional accuracy of the same parts processed by the five-axis numerical control machine tool is achieved, the purchasing cost of the machine tool and the matched cutter is greatly reduced, and in addition, the economical efficiency of the three-axis numerical control linear machine tool is incomparable with that of the five-axis numerical control machine tool from the aspects of labor cost and man-hour cost.
4. The invention solves the problems that when the similar products are processed by the original triaxial machine tool, repeated positioning and repeated adjustment are often needed, and the integral precision is difficult to ensure due to error accumulation caused by repeated adjustment.
5. The invention solves the problem that when the part has a sinking structure, the traditional machining mode can generate a machining internal corner, and the cutter can not enter the position to be machined.
6. The method is particularly suitable for hollow thin-wall TC6 titanium alloy parts with space polyhedral structures, can solve the processing difficulty caused by TC6 titanium alloy and hollow thin-wall structures with space polyhedral structures, greatly reduces the production cost while greatly improving the production efficiency, and improves the market economic benefit of the products.
Drawings
FIG. 1 is a schematic diagram of the structure of a workpiece to be processed.
Fig. 2 is a schematic diagram of the whole structure of the tooling.
Fig. 3 is a three-dimensional assembly diagram of the special tool.
Fig. 4 is a three-dimensional assembly diagram of the special tool.
FIG. 5 is a schematic diagram of tooling adjustment.
Fig. 6 is a schematic diagram of a three-axis numerically-controlled linear machine equipped with a dedicated tooling.
FIG. 7 is a schematic diagram of the connection relationship between a triaxial numerical control linear machine tool and a plate heat exchanger and a constant temperature water cooling machine.
The numerical control three-axis numerical control linear machine tool comprises the following components of 1, a clamping bottom plate, 2, a fixed bottom plate, 3, an angle fixing plate, 4, a rotating shaft, 5, a rotating shaft fixing seat, 6, a workpiece to be machined, 7, a special tool, 8, a three-axis numerical control linear machine tool, 11, a workpiece positioning pin hole to be machined, 31, a positioning pin, 32, an angle fixing plate fixing pin hole, 33, a clamping bottom plate fixing pin hole, 34, a fixed bottom plate positioning pin hole, 41, a release-stopping insert rod, 42, a mounting hole, 51, an upper fixing seat, 52, a lower fixing seat, 61, a workpiece fixing pin hole, 62, a framework positioning chuck, 63, a framework chuck, 64, a framework center line, 65, a reference surface A1,66, a reference surface B1,67, a reference surface A2,68, a reference surface B2,69, a machining surface, 100, a three-axis numerical control linear machine tool, 101, a plate heat exchanger, 102 and a constant temperature water cooler.
Detailed Description
Examples
As shown in FIG. 1, the structure of the hollow thin-wall characteristic skeleton type part with the multi-angle composite profile structure is schematically shown, and the material is TC6 titanium alloy.
As shown in fig. 2 to 5, the whole structure of the special tool is schematically shown, the special tool is composed of a clamping bottom plate 1, a fixing bottom plate 2, an angle fixing plate 3, a rotating shaft 4 and a rotating shaft fixing seat 5, wherein:
The clamping bottom plate 1 is positioned above the fixed bottom plate 2, and the clamping bottom plate 1 is provided with a workpiece positioning pin hole 11 to be processed, the side wall of the clamping bottom plate 1 is provided with a clamping bottom plate positioning pin hole 33, the side wall of the fixed bottom plate 2 is provided with a fixed bottom plate positioning pin hole 34, and the angle fixed plate 3 is fixed between the clamping bottom plate positioning pin hole 33 and the fixed bottom plate positioning pin hole 34 through a positioning pin 31;
The side wall of the rotating shaft fixing seat 5 perpendicular to the installation plane is provided with a through hole, the rotating shaft fixing seat 5 consists of an upper fixing seat 51 and a lower fixing seat 52, the upper fixing seat 51 is arranged on the lower surface of the clamping bottom plate 1, the lower fixing seat 52 is arranged on the upper surface of the fixing bottom plate 2, one side of the rotating shaft 4 is provided with an end head, the other side of the rotating shaft 4 is provided with an installation hole 42 for installing the anti-falling inserting rod 41, and the rotating shaft 4 penetrates through the through hole of the rotating shaft fixing seat 5 and is fixed by the anti-falling inserting rod 41.
The rotary shaft fixing seat 5 is arranged at the center of the clamping platform of the machine tool, the side edges of the rotary shaft fixing seat 5 are parallel to the clamping bottom plate 1, the parallelism is smaller than 10 mu m, the lengths of two groups of mutually perpendicular sides are equal to the parallel edges of the clamping platform, and the error range is smaller than 1mm.
As shown in fig. 7, the constant temperature water chiller 102 is added to be matched with the plate heat exchanger 101 to cool the cutting cooling liquid of the triaxial numerical control linear machine 100 at a low temperature, so that the temperature of the cutting liquid is ensured to be constant at 10+/-0.5 ℃. And a pressurizing device is added on the cutting fluid nozzle, so that the machining cutting fluid enters the cutting position of the cutter in a high-pressure jet flow mode, machining scraps are removed while cooling is ensured, cutter abrasion caused by high machining temperature is avoided, and cutter sticking phenomenon in the machining process is avoided.
The angle of the adjacent characteristic space surfaces of a framework structure of a certain model is between 5 degrees and 10 degrees, the sum of the accumulated adjacent characteristic space surface angles in the same quadrant plane of a machine tool basic coordinate system is not more than 15 degrees, and the minimum wall thickness is between 1 and 2mm, the characteristic structure has a closed-loop contour sag, and the framework structure of the certain model is processed by adopting a triaxial numerical control linear machine tool with a special tool, and the specific process is as follows:
1) Performing bench grinding, deburring, oxide scale removal and surface sand blasting on a cast titanium alloy skeleton blank, and then roughly milling a reference surface A165, a reference surface A267, a reference surface B166 and a reference surface B268 in a shape surface milling mode, wherein the finish milling allowance is reserved for 2mm, and the planeness of each surface is +/-0.2 mm;
2) Aligning and drawing a circle of central symmetry line of a workpiece skeleton to be processed according to a drawing, and welding positions of skeleton chucks;
3) The method comprises the steps of cleaning a workpiece skeleton to be processed and a welding position of a skeleton clamping head by acetone, leveling a symmetrical central line, assembling according to the clamping head position line, spot welding and fixing, compacting the workpiece to be processed on a special tool platform by a pressing plate to reduce welding deformation, welding all welding seams, and removing the pressing plate after the workpiece is completely cooled;
4) Aligning a central symmetry line, positioning according to the machining reference, finish milling a framework chuck, and ensuring that the dimensional accuracy is +/-0.1 mm and the symmetry degree is 0.1mm;
5) Processing:
a) Installing the framework on a special fixture, fixing a framework chuck according to a mark on a fixture clamping bottom plate by using a reference surface A1 to face upwards, and positioning and aligning by using a fixture center coordinate;
b) Milling the internal hollow structure according to the size, filling damping rubber into the non-machined hollow part to reduce vibration, ensuring the drawing size and the surface roughness to be less than 6.3, milling the outline of the skeleton according to the size in a contour milling mode to ensure the drawing size, finely milling the shape surface according to a reference surface A1 65 in a shape surface milling mode to ensure the drawing size, ensuring the flatness to be 0.1mm and the symmetry to be 0.1mm;
c) The angle fixing plate is replaced, so that the tool datum is positioned on the datum plane A2 67, the profile is finely milled in a form surface milling mode, the drawing size is ensured, the flatness is ensured to be 0.1mm, and the symmetry is ensured to be 0.1mm
D) Turning over, mounting the skeleton on a special fixture, fixing the skeleton chuck according to the mark on the clamping bottom plate, and aligning with the reference surface B1 66 facing upwards, and finish milling the shape surface according to the reference surface B1 66 in a shape surface milling mode, thereby preserving the drawing size, guaranteeing the flatness by 0.1mm and ensuring the symmetry by 0.1mm;
e) The angle fixing plate is replaced, so that the tool datum is positioned on the datum plane B2 68, the profile is finely milled in a form surface milling mode, the drawing size is ensured, the flatness is ensured to be 0.1mm, and the symmetry is ensured to be 0.1mm;
6) Drilling a bottom hole according to the dimension, and guaranteeing the dimension of a drawing;
7) Tapping the through hole;
8) The weight block is matched with the counterweight block, and interference fit is required;
9) And (5) carving, checking, packaging and transporting.
Comparative example
Table 1 shows a comparison of the three-axis machine tool and the five-axis machine tool in terms of the machining process parameters when machining the TC6 titanium alloy skeleton structure shown in fig. 1, all of which employ the same type of alloy material tool.
Table 1 three-axis machine tool and five-axis machine tool processing parameters
According to the transverse comparison, when a certain model TC6 titanium alloy skeleton is processed, compared with a five-axis numerical control machine tool, the production efficiency can be improved by more than 3 times by adopting the triaxial machine tool to be matched with a special tool in the aspect of processing efficiency.
The invention is not a matter of the known technology.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (8)
1.A processing method of a hollowed-out thin-wall characteristic framework type part with a multi-angle composite profile structure is characterized by adopting a triaxial numerical control linear machine tool with a special tool for processing, and the specific process is as follows:
1) Carrying out surface treatment on the cast titanium alloy skeleton blank, and then roughly milling a reference surface A1 (65), a reference surface A2 (67), a reference surface B1 (66) and a reference surface B2 (68) in a shape surface milling mode, wherein the finish milling allowance is reserved for 2mm, and the planeness of each surface is +/-0.2 mm;
2) Aligning and drawing a circle of central symmetry line of a workpiece skeleton to be processed according to a drawing, and welding positions of skeleton chucks;
3) The method comprises the steps of cleaning a workpiece skeleton to be processed and a welding position of a skeleton clamping head by acetone, leveling a symmetrical central line, assembling according to the clamping head position line, spot welding and fixing, compacting the workpiece to be processed on a special tool platform by a pressing plate, welding all welding seams, and removing the pressing plate after the workpiece is completely cooled;
4) Aligning the center symmetry line, positioning according to the machining reference, finish milling the skeleton clamping head, ensuring the dimensional accuracy to be +/-0.1 mm and the symmetry to be 0.1mm;
5) Processing:
a) Installing the framework on a special fixture, and fixing a framework chuck with a datum plane A1 (65) upwards;
b) Milling the internal hollow structure according to the size, filling damping rubber into the non-machined hollow part, ensuring the drawing size and the surface roughness to be less than 6.3, milling the outline of the skeleton according to the size in a contour milling mode, ensuring the drawing size, finely milling the shape surface according to a reference surface A1 (65) in a shape surface milling mode, ensuring the drawing size, ensuring the flatness to be 0.1mm and ensuring the symmetry to be 0.1mm;
c) The angle fixing plate is replaced, so that the tool datum is positioned to a datum plane A2 (67), the profile is finely milled in a surface milling mode, the drawing size is ensured, the flatness is ensured to be 0.1mm, and the symmetry is ensured to be 0.1mm
D) Turning over, mounting the framework on a special fixture, fixing the framework chuck according to the mark on the clamping bottom plate (1), and aligning with the reference surface B1 (66) facing upwards, and finish milling the shape surface in a shape surface milling mode according to the reference surface B1 (66), wherein the dimension of a drawing is ensured, the flatness is ensured to be 0.1mm, and the symmetry is ensured to be 0.1mm;
e) The angle fixing plate is replaced, so that the tool datum is positioned to a datum plane B2 (68), the profile is finely milled in a form surface milling mode, the drawing size is ensured, the flatness is ensured to be 0.1mm, and the symmetry is ensured to be 0.1mm;
6) Drilling a bottom hole according to the dimension, and guaranteeing the dimension of a drawing;
7) Tapping the through hole;
8) The weight block is matched with the counterweight block, and interference fit is required;
9) And (5) carving, checking, packaging and transporting.
2. The processing method of the hollowed-out thin-wall characteristic framework type part with the multi-angle composite profile structure is characterized in that the special tool consists of a clamping bottom plate (1), a fixing bottom plate (2), an angle fixing plate (3), a rotating shaft (4) and a rotating shaft fixing seat (5), wherein:
The clamping bottom plate (1) is positioned above the fixed bottom plate (2), and the clamping bottom plate (1) is provided with a workpiece positioning pin hole (11) to be processed, the side wall of the clamping bottom plate (1) is provided with a clamping bottom plate fixing pin hole (33), the side wall of the fixed bottom plate (2) is provided with a fixed bottom plate positioning pin hole (34), and the angle fixing plate (3) is fixed between the clamping bottom plate fixing pin hole (33) and the fixed bottom plate positioning pin hole (34) through a positioning pin (31);
The side wall of the rotating shaft fixing seat (5) is provided with a through hole, the rotating shaft fixing seat (5) consists of an upper fixing seat (51) and a lower fixing seat (52), the upper fixing seat (51) is positioned on the lower surface of the clamping bottom plate (1), the lower fixing seat (52) is positioned on the upper surface of the fixing bottom plate (2), one side of the rotating shaft (4) is provided with an end head, and the other side of the rotating shaft is provided with a mounting hole (42) for mounting the anti-falling insert rod (41).
3. The processing method of the hollowed-out thin-wall characteristic framework type part with the multi-angle composite profile structure is characterized in that a rotating shaft fixing seat (5) is arranged at the center of a clamping platform of a machine tool, the side walls of the rotating shaft fixing seat (5) are parallel to the side walls of a clamping bottom plate (1), the parallelism is smaller than 10 mu m, the lengths of two groups of mutually perpendicular side walls of the clamping bottom plate (1) from the parallel sides of the clamping platform are equal, and the error range is smaller than 1mm.
4. The method for processing the hollow thin-wall characteristic framework type part with the multi-angle composite profile structure, which is characterized in that in the step 1), the surface treatment comprises polishing, deburring, descaling and surface sand blasting.
5. The method for processing a hollowed-out thin-wall feature skeleton-like part with a multi-angle composite profile structure according to claim 1, wherein the part has one or more of the following features:
① The angle of adjacent characteristic space surfaces of the part is 5-10 degrees, and the sum of accumulated adjacent characteristic space surface angles in the same quadrant plane of a basic coordinate system of a machine tool is not more than 15 degrees;
② The minimum wall thickness of the part is 1-2 mm;
③ The part characteristic structure is provided with a closed-loop profile sinking, or a part which can not be subjected to direct back chipping treatment and is used for processing an internal corner can be generated in the processing process;
④ The surface roughness is required to reach Ra less than or equal to 3.2 mu m;
⑤ The proportion of the sum of projection areas of the hollow structures of the parts to the total surface area is 50% -80%.
6. The method for processing the hollowed-out thin-wall characteristic framework type part with the multi-angle composite profile structure according to claim 1 or 5 is characterized in that the part is prepared from TC6 titanium alloy.
7. The method for processing the hollow thin-wall characteristic framework type part with the multi-angle composite profile structure, which is disclosed in claim 1, is characterized in that the triaxial numerical control linear machine tool is provided with a constant-temperature water chiller and a plate heat exchanger and is used for cooling cutting cooling liquid of the triaxial numerical control linear machine tool at a low temperature, so that the temperature of the cutting liquid is kept constant at 10+/-0.5 ℃.
8. The method for machining the hollow thin-wall characteristic skeleton type part with the multi-angle composite profile structure, which is disclosed in claim 7, is characterized in that a pressurizing device is additionally arranged at a cutting fluid nozzle of a triaxial numerical control linear machine tool, so that machining cutting fluid enters a cutting position of a cutter in a high-pressure jet flow mode.
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| CN116824975A (en) * | 2023-06-30 | 2023-09-29 | 东风商用车有限公司 | Method for manufacturing thin-wall part on large-scale oil sludge model |
| CN117020275B (en) * | 2023-07-11 | 2025-08-29 | 陕西电器研究所 | A five-axis milling method and tooling for V-shaped large thin plate parts |
| CN118905574B (en) * | 2024-08-27 | 2025-09-16 | 湖北三江航天红阳机电有限公司 | Machining method of casting cylinder opening type framework |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109454404A (en) * | 2018-08-30 | 2019-03-12 | 洛阳奇瑞机械科技有限公司 | A kind of optical window skeleton precision castings machine-tooled method of aerial gondola |
| CN114523270A (en) * | 2022-04-02 | 2022-05-24 | 中国科学院合肥物质科学研究院 | Welding processing method for CCT framework of groove-lacking type bent oblique solenoid |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2498883C1 (en) * | 2012-06-19 | 2013-11-20 | Открытое акционерное общество "Научно-производственное объединение "Сатурн" | Method of making compressor blade |
| CN106078103B (en) * | 2016-06-29 | 2017-12-19 | 洛阳奇瑞机械科技有限公司 | The machine-tooled method of spherical shell after a kind of Aircraft Air gondola |
| CN106624632B (en) * | 2016-12-06 | 2018-12-28 | 上海航天精密机械研究所 | The slim polyhedron rudder skeleton of titanium alloy and its processing method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109454404A (en) * | 2018-08-30 | 2019-03-12 | 洛阳奇瑞机械科技有限公司 | A kind of optical window skeleton precision castings machine-tooled method of aerial gondola |
| CN114523270A (en) * | 2022-04-02 | 2022-05-24 | 中国科学院合肥物质科学研究院 | Welding processing method for CCT framework of groove-lacking type bent oblique solenoid |
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