CN112453515A - Leaf disc processing method - Google Patents
Leaf disc processing method Download PDFInfo
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- CN112453515A CN112453515A CN202011272062.XA CN202011272062A CN112453515A CN 112453515 A CN112453515 A CN 112453515A CN 202011272062 A CN202011272062 A CN 202011272062A CN 112453515 A CN112453515 A CN 112453515A
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Abstract
The invention discloses a leaf disc processing method, which comprises the following steps: s1, setting the number of the flow channels to be N, wherein the flow channels comprise N1 first flow channels and N2 second flow channels, and the first flow channels and the second flow channels are alternately distributed; the flow passages are processed along the radial direction of the blade disc and are uniformly distributed, and blades are formed between the adjacent flow passages; s2, sequentially forming N1 first flow channels by utilizing cycloid milling; s3, carrying out layer milling on the first flow channel; s4, repeating the steps S2-S3 until the number of milling layers is X1; s5, utilizing cycloid milling to open any second flow channel; s6, carrying out layer milling on the second flow channel completed in the step S5; s7, performing finish milling on the second flow passage and the blade completed in the step S6; s8, repeating the steps S5-S7 until the number of milling layers is X2, and finishing milling the second flow channel; and S9, repeating the steps S5-S8, and sequentially processing the second flow channel and the blades on the side edges of the second flow channel. The invention can improve the machining efficiency of the blade disc and reduce the damage to a machine tool.
Description
Technical Field
The invention particularly relates to a processing method of a leaf disc.
Background
The integral blade disc of the aero-engine integrates the rotor blade and the wheel disc which are separated conventionally, so that the machining difficulty of the blade disc is high. Especially for a large fan disc, the blade has the suspended length of 100mm-300mm, and the blade is thin, has large torsion resistance and has a narrow flow passage. In addition, the fan disc is made of materials with high processing difficulty, such as titanium alloy, stainless steel, high-temperature alloy and the like, so that the phenomena of deformation, flutter and the like are easy to occur in the processing process of the blade disc. The profile tolerance of the fan disc blade profile has higher precision requirement, the tolerance of the fan disc blade profile is usually +/-0.05 mm, and the tolerance of the front edge and the rear edge is only +/-0.04 mm. In a traditional processing method, firstly, cycloidal milling is carried out on a blade, a coarse flow channel is formed on the surface of the blade, then wax filling treatment is carried out, and then layered finish milling is carried out on the blade. The wax filling process in the blade machining process is complicated, so that the machining efficiency of the blade disc is low, and after the removed wax enters the interior of a machine tool, the machine tool is easily damaged to a certain extent.
Disclosure of Invention
The invention aims to provide a blisk machining method which can improve the machining efficiency of a blisk and reduce damage to a machine tool.
In order to solve the technical problem, the invention provides a method for processing a blade disc, which comprises the following steps:
s1, setting the number of flow channels to be N, wherein the flow channels comprise N1 first flow channels and N2 second flow channels, and the first flow channels and the second flow channels are alternately distributed; the flow passages are processed along the radial direction of the blade disc, the flow passages are uniformly distributed around the center of the blade disc, and blades are formed between the adjacent flow passages;
s2, sequentially forming N1 first flow channels along the radial direction of the blade disc by utilizing a cycloid mill;
s3, performing layer milling on the first flow channel;
s4, repeating the steps S2-S3 until the number of milling layers is X1, wherein X1 is L/m1, L is the leaf length, and m1 is the cutting depth;
s5, processing along the radial direction of the blade disc by utilizing a cycloid mill to open any one second flow passage;
s6, performing layer milling on the second flow channel completed in the S5 step;
s7, finish milling the second flow passage and the blade which are finished in the step S6;
s8, repeating the steps S5-S7 until the number of milling layers is X2, and finishing milling the second flow channel, wherein X2 is L/m2, L is the leaf length, and m2 is the cutting depth;
s9, repeating the steps S5-S8, and sequentially processing the second flow channel and the blades on the side edges of the second flow channel.
Further, when the number of the blades is even, the method comprises the following steps:
s1, setting the number of flow channels to be N, wherein the flow channels comprise N1 first flow channels and N2 second flow channels, and the first flow channels and the second flow channels are alternately distributed; wherein, N1 is N/2, N2 is N/2; the flow passages are processed along the radial direction of the blade disc, the flow passages are uniformly distributed around the center of the blade disc, and blades are formed between the adjacent flow passages;
s2, sequentially forming N1 first flow channels along the radial direction of the blade disc by utilizing a cycloid mill;
s3, performing layer milling on the first flow channel;
s4, repeating the steps S2-S3 until the number of milling layers is X1;
s5, processing along the radial direction of the blade disc by utilizing a cycloid mill to open any one second flow passage;
s6, performing layer milling on the second flow channel completed in the S5 step;
s7, finish milling the second flow passage finished in the step S6 and the blades on two sides of the second flow passage;
s8, repeating the steps S5-S7 until the number of milling layers is X2, and finishing milling the second flow channel and the blades on two sides of the second flow channel;
s9, repeating the steps S5-S8, and processing the second flow channel and the blades on the two sides of the second flow channel in sequence.
Further, when the number of the blades is odd, the method comprises the following steps:
s1, setting the number of flow channels to be N, wherein the flow channels comprise N1 first flow channels and N2 second flow channels, and the first flow channels and the second flow channels are alternately distributed; wherein, N1 ═ N-1)/2, N2 ═ N-1)/2; the flow passages are processed along the radial direction of the blade disc, the flow passages are uniformly distributed around the center of the blade disc, and blades are formed between the adjacent flow passages;
s2, sequentially forming N1 first flow channels along the radial direction of the blade disc by utilizing a cycloid mill;
s3, performing layer milling on the first flow channel;
s4, repeating the steps S2-S3 until the number of milling layers is X1;
s5, machining an Nth flow channel along the radial direction of the blade disc by utilizing a cycloid mill, then carrying out layer milling on the Nth flow channel, and then carrying out finish milling on the Nth flow channel and the blade close to the first flow channel;
s6, repeating the step S5 until the number of milling layers is X3, wherein X3 is L/m3, L is the leaf length, and m3 is the cutting depth;
s7, processing along the radial direction of the blade disc by utilizing a cycloid mill to open any one second flow passage;
s8, performing layer milling on the second flow channel completed in the S7 step;
s9, finish milling the second flow passage finished in the step S8 and the blades on two sides of the second flow passage;
s10, repeating the steps S7-S9 until the number of milling layers is X2, and finishing milling the second flow channel and the blades on two sides of the second flow channel;
and S11, repeating the steps S7-S11, and sequentially processing the second flow channel and the blades on the two sides of the second flow channel.
Further, in step S7, the number of the repeating layers of the milling route number is X4, wherein X4 is less than or equal to 2.
Further, in steps S3 and S6, the milling cutter has an avoidance distance of 0.3 to 0.6mm, which is an offset distance of the milling cutter performing the layer-by-layer milling in a direction away from the blade compared to the milling cutter of the cycloid milling.
Further, in step S7, the milling cutter has an avoidance distance of 0.3 to 0.6mm, which is an offset distance of the milling cutter performing finish milling in a direction away from the blade compared to the milling cutter performing layer-by-layer milling.
Further, after the step S2 is finished, the remaining allowance of the blade is 0.45-0.65 mm; after the step S5 is completed, the remaining margin of the blade is 0.45-0.65 mm.
Further, after the step S3 is finished, the remaining allowance of the blade is 0.15-0.35 mm; after the step S6 is completed, the remaining margin of the blade is 0.15-0.35 mm.
Furthermore, the milling cutter of the cycloid milling is a first taper ball-end milling cutter, the milling cutter of the layer-by-layer milling is a second taper ball-end milling cutter, and the milling cutter of the finish milling is a third taper ball-end milling cutter.
The invention has the beneficial effects that:
firstly, efficient milling treatment is carried out by utilizing a cycloid mill to finish rough milling, so that the efficiency of rough milling is improved; then, the runner and the blade are further processed in a layered milling mode by using a milling cutter, so that the profile degree of the blade is easy to ensure in the processing process; after the layered milling is finished, the flow channel allowance and the blade allowance are subjected to finish milling treatment, and at the moment, the finish milling process can further improve the profile tolerance of the blade; by utilizing a combined machining strategy of cycloid milling, layer milling and finish milling, the efficiency of each stage in the blade machining and the profile degree of the blade can be considered;
after rough milling is finished, a processing mode of milling layer by using a milling cutter replaces a wax filling procedure in the prior art, so that the problem of low efficiency caused by complicated wax filling procedure can be solved, and the efficiency of machining the leaf disc is improved; meanwhile, the damage of the wax filling process to the machine tool is solved, so that the damage to the machine tool is reduced by the processing strategy in the embodiment, and the service life of the machine tool is effectively prolonged.
Drawings
FIG. 1 is a schematic view of a flow channel of the present invention;
FIG. 2 is a tool path of the cycloid milling machine of the present invention;
FIG. 3 is a schematic view of the cycloidal milling principle of the present invention;
FIG. 4 is a schematic view of a milling tool path of the runner layer of the present invention;
FIG. 5 is a schematic diagram of the milling and cutting principle of the runner layer in the present invention;
FIG. 6 is a schematic view of a tool path during finish milling according to the present invention;
FIG. 7 is a schematic view of the finish milling cutting principle of the present invention;
FIG. 8 is a schematic view of a milling cutter in machining of a blisk according to the present invention.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Example one
Referring to fig. 1 to 8, an embodiment of a blisk processing method according to the present invention, when the number of blades to be processed is even, includes the following steps:
s1, setting the number of flow channels to be N, wherein the flow channels comprise N1 first flow channels and N2 second flow channels, and the first flow channels and the second flow channels are alternately distributed; wherein, N1 is N/2, N2 is N/2; the flow passages are processed along the radial direction of the blade disc, the flow passages are uniformly distributed around the center of the blade disc, and the blade is formed after the processing of the adjacent flow passages is finished;
s2, sequentially forming N1 first flow channels along the radial direction of the blade disc by utilizing a cycloid mill;
s3, performing layer milling on the first flow channel completed in the step S2;
s4, repeating the steps S2-S3 until the number of milling layers is X1; wherein, X1 is L/m1, wherein L is the leaf length, and m1 is the cutting depth;
s5, processing along the radial direction of the blade disc by utilizing a cycloid mill to open any one second flow passage;
s6, performing layer milling on the second flow channel completed in the S5 step;
s7, finish milling the second flow passage finished in the step S6 and the blades on two sides of the second flow passage;
s8, repeating the steps S5-S7 until the number of milling layers is X2, and finishing milling the second flow channel and the blades on two sides of the second flow channel; wherein, X2 is L/m2, wherein L is the leaf length, and m2 is the cutting depth;
s9, repeating the steps S5-S8, and processing the second flow channel and the blades on the two sides of the second flow channel in sequence.
In the application, firstly, efficient milling treatment is carried out by utilizing the cycloid milling machine, rough milling processing is completed, and efficiency in rough milling processing is improved. And then, the runner and the blade are further processed by a milling cutter in a layered milling mode, so that the uniformity and consistency of the blade allowance before finish milling of the blade are ensured, and the final profile degree of the blade profile is facilitated. After the layered milling is finished, a certain amount of flow passage allowance and blade allowance are reserved, and then the flow passage allowance and the blade allowance are subjected to finish milling treatment, so that the profile degree of the blade can be further improved in the finish milling process. By utilizing a combined machining strategy of cycloid milling, layer milling and finish milling, the efficiency of each stage in the blade machining and the profile tolerance of the blade can be considered. In the initial processing, the cycloid milling with higher processing efficiency is used for processing a rough milling process, and then the layer milling with higher milling precision is used for processing a semi-finish milling process; and when the machining allowance is smaller, performing finish milling on the flow channel and the blade. By utilizing the milling strategy, the efficiency of machining the blade disc is improved, and the quality of machining the blade disc is also ensured.
Meanwhile, the processing mode of milling layer by using the milling cutter after rough milling is finished replaces the wax filling procedure in the prior art, so that the problem of low efficiency caused by the complicated wax filling procedure can be solved, and the efficiency of machining the leaf disc is improved. Meanwhile, the damage of the wax filling process to the machine tool is solved, so that the damage to the machine tool is reduced by the processing strategy in the embodiment, and the service life of the machine tool is effectively prolonged.
In addition, in the rough milling process, the milling processing is carried out by utilizing a cycloid milling mode, so that the rough milling efficiency can be improved; meanwhile, the side edge of the milling cutter is used for milling in the cycloid milling process, so that the damage to the cutter can be reduced, and the service life of the cutter is prolonged.
Firstly, sequentially processing a first flow channel in a cycloid milling mode, and then sequentially carrying out layer milling on the first flow channel; and after finishing the layer milling, alternately performing cycloid milling and layer milling according to the steps. And then sequentially processing the independent second flow channel in a cycloid milling, layer milling and finish milling mode, and finishing the processing of the second flow channel after repeating X2 times. And then the processing of other second flow channels is completed in turn according to the mode. When a first runner is machined in the machining method, the milling cutter for the cycloid milling is a first taper ball-end milling cutter, and the milling cutter for the layer milling is a second taper ball-end milling cutter. Meanwhile, when the second flow channel is machined, the milling cutter of the cycloid milling is a first taper ball-end milling cutter, the milling cutter of the layer milling is a second taper ball-end milling cutter, and the milling cutter of the finish milling is a third taper ball-end milling cutter. Therefore, based on different machining modes, the types of the milling cutters are selected differently, in the embodiment, the cycloid milling cutter is a D8R 4R 3R 30D 12L 100L 4F taper ball end mill, which is set as T1, the runner milling cutter is a D8R 4R 3 degree D12D 100L 4F taper ball end mill, which is set as T2, and the blade finishing milling cutter is a D8R 4R 15R 4 degree D12L 105L 4F taper ball end mill, which is set as T3. In addition, when processing one by one the second flow path, because the size of blade is great, milling cutter has certain wearing and tearing when processing, in order to guarantee the processing effect, the processing of single second flow path in this embodiment is accomplished the back, and the milling cutter that is used for processing is changed to the precision of assurance bladed disk processing.
The chatter of the cutter during machining of the blade tip can be reduced by respectively milling the first flow channel and the second flow channel and machining the second flow channel layer by layer. When the blade is finely milled by utilizing the processing mode, the blade disc has better rigidity so as to ensure the qualification rate of the blade profile. Compared with the prior art, the machining method that the blades are milled in a rough flow channel (the blades retain stepped allowance) and then in a rough and fine mixed mode is adopted in the cycloid milling process, the machining method in the embodiment can obtain high surface quality. In the prior art, the processing mode keeps large step-shaped allowance in the rough milling process, the allowance of the blade root of the blade tip cutter is gradually increased, and after a flow channel of a complete blade disc is roughly milled, a cutter is adopted to roughly mill and finely mill the whole blade in a layered mode. When the method is used for processing the blade with the overhanging length of more than 100mm, the overhanging length of the blade is too long and the rigidity is poor even if the blade keeps large allowance, the blade is easy to vibrate at the blade tip processing part of a cutter, the blade profile is not easy to process qualified, and the rough milling allowance is large, so that the finish milling time is greatly increased. Therefore, compared with the prior art, the scheme in the embodiment can improve the processing efficiency and the quality of the processed blade.
After the step S2 is finished, the remaining allowance of the blade is 0.45-0.65 mm; after the step S5 is completed, the remaining margin of the blade is 0.45-0.65 mm. The cutting principle of each layer is shown in the figures 2 and 3, the processing is carried out by utilizing a layered milling mode, the processing precision can be ensured, the operation is convenient, and the cycloid milling in the application carries out layer-by-layer processing with the layered depth of 25mm in cutting depth.
In parameter setting, the remaining margin of the blade is 0.45-0.65mm, and when the remaining margin of the blade is more than 0.65mm, the processing amount in subsequent layered milling and finish milling is increased, so that the efficiency of machining the blade disc is reduced. When the remaining allowance of the blade is less than 0.45mm, the processing difficulty is improved, and the surface of the blade is easy to harden. In addition, the cutting width between adjacent cutting tool paths is 0.25-0.45mm, so that the remaining allowance of the cut blade is uniform, and subsequent parameter setting and cutting processing are facilitated.
When the first flow passage and the second flow passage are milled layer by layer respectively, the cutting principle of each layer is shown in fig. 4 and 5, the milling path of the middle layer in the milling process of each layer is 24 layers which are named as C respectivelyn-1,Cn-2,Cn-i…Cn-24(n is 1,2,3,4,5, 6). In the parameter setting, after the step S3 is finished, the remaining allowance of the blade is 0.15-0.35 mm; after the step S6 is completed, the remaining margin of the blade is 0.15-0.35 mm. When the remaining allowance of the blade is larger than 0.35mm, the processing amount in subsequent finish milling is increased, and the efficiency of processing the blade disc is reduced. When the remaining allowance of the blade is less than 0.15mm, the processing difficulty is improved, and the surface of the blade is easy to harden.
When the flow channel and the blade are subjected to finish milling, the cutting principle is shown in figures 6 and 7, the whole combined milling machine is divided into 6 layers in the application, the number of the cutter paths for finish milling of each layer of blade is 48, and the cutter paths are respectively named as Fn-1,Fn-2,Fn-j,…Fn-48(n is 1,2,3,4,5, 6). Ginseng radix (Panax ginseng C.A. Meyer)The number of the blades is set, the margin of 0mm is reserved for the blades, the margin of 0.3mm is reserved for the flow passages, the cutting linear speed is 80m/min, and the cutting feed speed F is 873 mm/min.
In addition, the number of repeated milling layers is required to be set in the rough and fine combined milling setting, and the number of repeated milling layers of the fine milling cutter path is set to be X4, wherein X4 is less than or equal to 2. The fine milling cutter path at the beginning of each layer in the combined milling can extend out by two layers and is overlapped with the previous layer, so that the cutter connecting trace is reduced.
In steps S3 and S6, the milling cutter has an avoidance distance of 0.3 to 0.6mm, which is an offset distance of the milling cutter performing layer-by-layer milling in a direction away from the blade compared to the milling cutter of the cycloid milling. The cutter path of the layer milling cutter of the semi-finish milling of the same layer is enabled to be outwards biased by 0.5mm compared with the cutter path of the cycloid milling cutter through the arrangement of the avoiding distance, the cutter is prevented from increasing cutting force due to the fact that the contact area of cutting edges of the cutter at layered positions is large, vibration lines are not prone to being generated in the machining process, and the surface quality of the blade is improved.
In step S7, the relief distance of the milling cutter is 0.3 to 0.6mm, which is the offset distance of the milling cutter performing finish milling in the direction away from the blade compared to the milling cutter performing layer-by-layer milling. The finish milling cutter path on the same layer can be outwards offset by 0.5mm compared with the semi-finish milling cutter path by setting the avoiding distance, the phenomenon that the contact area of cutting edges of the cutter at layered positions is large to cause the increase of cutting force is avoided, vibration lines are not easy to generate in the machining process, and the surface quality of the blade is improved.
Example two
The difference between the present embodiment and the first embodiment is that when the number of the blades is odd, the method comprises the following steps:
s1, setting the number of flow channels to be N, wherein the flow channels comprise N1 first flow channels and N2 second flow channels, and the first flow channels and the second flow channels are alternately distributed; wherein, N1 ═ N-1)/2, N2 ═ N-1)/2; the flow passages are processed along the radial direction of the blade disc, the flow passages are uniformly distributed around the center of the blade disc, and blades are formed between the adjacent flow passages;
s2, sequentially forming N1 first flow channels along the radial direction of the blade disc by utilizing a cycloid mill;
s3, performing layer milling on the first flow channel;
s4, repeating the steps S2-S3 until the number of milling layers is X1, wherein X1 is L/m1, L is the leaf length, and m1 is the cutting depth;
s5, machining an Nth flow channel along the radial direction of the blade disc by utilizing a cycloid mill, then carrying out layer milling on the Nth flow channel, and then carrying out finish milling on the Nth flow channel and the blade close to the first flow channel;
s6, repeating the step S5 until the number of milling layers is X3, wherein X3 is L/m3, L is the leaf length, and m3 is the cutting depth;
s7, processing along the radial direction of the blade disc by utilizing a cycloid mill to open any one second flow passage;
s8, performing layer milling on the second flow channel completed in the S7 step;
s9, finish milling the second flow passage finished in the step S8 and the blades on two sides of the second flow passage;
s10, repeating the steps S7-S9 until the number of milling layers is X2, milling the second flow channel and the blades on two sides of the second flow channel is completed, wherein X2 is L/m2, L is the length of each blade, and m2 is the cutting depth;
and S11, repeating the steps S7-S11, and sequentially processing the second flow channel and the blades on the two sides of the second flow channel.
In this embodiment, after the cycloid milling and the layer milling are performed on the first flow channel, the nth flow channel is processed, and after the processing of the nth flow channel is completed, the second flow channel is processed. By utilizing the processing steps, the subsequent processing route of the second flow channel is convenient to set.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (9)
1. A method for machining a bladed disc is characterized by comprising the following steps:
s1, setting the number of flow channels to be N, wherein the flow channels comprise N1 first flow channels and N2 second flow channels, and the first flow channels and the second flow channels are alternately distributed; the flow passages are processed along the radial direction of the blade disc, the flow passages are uniformly distributed around the center of the blade disc, and blades are formed between the adjacent flow passages;
s2, sequentially forming N1 first flow channels along the radial direction of the blade disc by utilizing a cycloid mill;
s3, performing layer milling on the first flow channel;
s4, repeating the steps S2-S3 until the number of milling layers is X1, wherein X1 is L/m1, L is the leaf length, and m1 is the cutting depth;
s5, processing along the radial direction of the blade disc by utilizing a cycloid mill to open any one second flow passage;
s6, performing layer milling on the second flow channel completed in the S5 step;
s7, finish milling the second flow passage and the blade which are finished in the step S6;
s8, repeating the steps S5-S7 until the number of milling layers is X2, and finishing milling the second flow channel, wherein X2 is L/m2, L is the leaf length, and m2 is the cutting depth;
s9, repeating the steps S5-S8, and sequentially processing the second flow channel and the blades on the side edges of the second flow channel.
2. The blisk processing method according to claim 1, characterized in that when said blades are even, it comprises the following steps:
s1, setting the number of flow channels to be N, wherein the flow channels comprise N1 first flow channels and N2 second flow channels, and the first flow channels and the second flow channels are alternately distributed; wherein, N1 is N/2, N2 is N/2; the flow passages are processed along the radial direction of the blade disc, the flow passages are uniformly distributed around the center of the blade disc, and blades are formed between the adjacent flow passages;
s2, sequentially forming N1 first flow channels along the radial direction of the blade disc by utilizing a cycloid mill;
s3, performing layer milling on the first flow channel;
s4, repeating the steps S2-S3 until the number of milling layers is X1;
s5, processing along the radial direction of the blade disc by utilizing a cycloid mill to open any one second flow passage;
s6, performing layer milling on the second flow channel completed in the S5 step;
s7, finish milling the second flow passage finished in the step S6 and the blades on two sides of the second flow passage;
s8, repeating the steps S5-S7 until the number of milling layers is X2, and finishing milling the second flow channel and the blades on two sides of the second flow channel;
s9, repeating the steps S5-S8, and processing the second flow channel and the blades on the two sides of the second flow channel in sequence.
3. The blisk processing method according to claim 1, characterized in that when said blades are odd, it comprises the following steps:
s1, setting the number of flow channels to be N, wherein the flow channels comprise N1 first flow channels and N2 second flow channels, and the first flow channels and the second flow channels are alternately distributed; wherein, N1 ═ N-1)/2, N2 ═ N-1)/2; the flow passages are processed along the radial direction of the blade disc, the flow passages are uniformly distributed around the center of the blade disc, and blades are formed between the adjacent flow passages;
s2, sequentially forming N1 first flow channels along the radial direction of the blade disc by utilizing a cycloid mill;
s3, performing layer milling on the first flow channel;
s4, repeating the steps S2-S3 until the number of milling layers is X1;
s5, machining an Nth flow channel along the radial direction of the blade disc by utilizing a cycloid mill, then carrying out layer milling on the Nth flow channel, and then carrying out finish milling on the Nth flow channel and the blade close to the first flow channel;
s6, repeating the step S5 until the number of milling layers is X3, wherein X3 is L/m3, L is the length of the blade, and m3 is the cutting depth;
s7, processing along the radial direction of the blade disc by utilizing a cycloid mill to open any one second flow passage;
s8, performing layer milling on the second flow channel completed in the S7 step;
s9, finish milling the second flow passage finished in the step S8 and the blades on two sides of the second flow passage;
s10, repeating the steps S7-S9 until the number of milling layers is X2, and finishing milling the second flow channel and the blades on two sides of the second flow channel;
and S11, repeating the steps S7-S11, and sequentially processing the second flow channel and the blades on the two sides of the second flow channel.
4. The blisk processing method according to claim 1, wherein, in step S7, the number of the repeated layers of the milling paths is X4, where X4 is ≦ 2.
5. The blisk processing method according to claim 1, wherein, in steps S3 and S6, a relief distance of the milling cutter is 0.3-0.6mm, the relief distance being an offset distance of the milling cutter performing the layer-by-layer milling in a direction away from the blade compared to a milling cutter of a cycloid milling.
6. The blisk processing method according to claim 1, wherein, in step S7, a relief distance of the milling cutter is 0.3-0.6mm, the relief distance being an offset distance of the milling cutter performing finish milling in a direction away from the blade compared to the milling cutter performing layer-by-layer milling.
7. The blisk processing method according to claim 1, wherein after step S2 is completed, the remaining blade margin is 0.45-0.65 mm; after the step S5 is completed, the remaining margin of the blade is 0.45-0.65 mm.
8. The blisk processing method according to claim 1, wherein after step S3 is completed, the remaining blade margin is 0.15-0.35 mm; after the step S6 is completed, the remaining margin of the blade is 0.15-0.35 mm.
9. The blisk processing method according to claim 1, wherein the milling cutter of the cycloid mill is a first taper ball-end milling cutter, the milling cutter of the layer-by-layer milling is a second taper ball-end milling cutter, and the milling cutter of the finish milling is a third taper ball-end milling cutter.
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| CN113231677A (en) * | 2021-05-27 | 2021-08-10 | 贵州永红航空机械有限责任公司 | Anti-vibration milling method for ultrathin blade of integral impeller |
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| US20060177281A1 (en) * | 2003-07-08 | 2006-08-10 | Arndt Glaesser | Milling method for the production of components |
| US20090148251A1 (en) * | 2007-12-11 | 2009-06-11 | Arndt Glasser | Plunge milling method |
| CN104507607A (en) * | 2012-08-01 | 2015-04-08 | 三菱重工业株式会社 | Method for manufacturing compressor impeller and compressor impeller |
| CN105436823A (en) * | 2015-11-24 | 2016-03-30 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for controlling machining deformation of thin-walled part |
| CN110465687A (en) * | 2019-08-21 | 2019-11-19 | 无锡市润和机械有限公司 | A kind of aero-engine integral blade processing method |
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| CN113231677B (en) * | 2021-05-27 | 2022-04-01 | 贵州永红航空机械有限责任公司 | Anti-vibration milling method for ultrathin blade of integral impeller |
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| CN112453515B (en) | 2022-04-05 |
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