CN205614150U - A combination processing formula electrode for processing aeroengine guide blade groove of obturaging - Google Patents
A combination processing formula electrode for processing aeroengine guide blade groove of obturaging Download PDFInfo
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- CN205614150U CN205614150U CN201521010381.8U CN201521010381U CN205614150U CN 205614150 U CN205614150 U CN 205614150U CN 201521010381 U CN201521010381 U CN 201521010381U CN 205614150 U CN205614150 U CN 205614150U
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Abstract
The utility model provides a combination processing formula electrode for processing aeroengine guide blade groove of obturaging, including electrode and electrode base, the chuck, a copper -tungsten alloy piece, the 2nd copper -tungsten alloy piece, first electrode and second electrode, the first electrode lie in a copper -tungsten alloy piece the tip and with as an organic wholeization of a copper -tungsten alloy piece structure, the second electrode lie in the 2nd copper -tungsten alloy piece the tip and with the 2nd as an organic wholeization of copper -tungsten alloy piece structure, the both ends in the electrode base bottom surface are fixed respectively to a copper -tungsten alloy piece and the 2nd copper -tungsten alloy piece, the shape of first electrode and second electrode, the position is respectively with to treat that the shape in groove is obturaged in processing unanimous on big listrium of guide blade and the little listrium, the position phase -match, the chuck includes shape and electric spark machine's the main tapping assorted main shaft connecting portion and the base connecting portion in threaded hole, and the main shaft connecting portion pass electrode base and go up chuck installation through -hole and base connecting portion and the electrode base threaded connection who sets up.
Description
Technical field
This utility model belongs to aero-engine guide vane manufacturing technology field, obturages the Combined machining formula electrode of groove for processing aero-engine guide vane particularly to a kind of.
Background technology
Guide vane is to bear high temperature and the most severe part of thermal shock in aero-engine parts, and its working condition is the most severe.Guide vane except by bigger pneumatic work with unstable pulsating load in addition to, also in the encirclement of high-temperature fuel gas, the temperature of working environment is high and cold and hot change is big, and being heated of guide vane is the most uneven.For reducing the air loss of aero-engine, improve effect of obturaging, need to process on guide vane groove of obturaging.Groove of obturaging is distributed on big listrium and the little listrium of guide vane respectively, and owing to the groove depth of groove of obturaging is relatively deep, groove width is narrower, Working position degree and required precision are high, thus difficulty of processing is big.And, the structure of guide vane itself is extremely complex, this further adds the difficulty of processing of groove of obturaging, development along with aero-engine, multi-joint guide blade structures has been widely used in new work engine, relative to simply connected guide vane, multi-joint guide blade structures structure is increasingly complex, and the difficulty of processing of its groove of obturaging is bigger.
Guide vane is generally made by the high temperature alloy with excellent elevated temperature strength and hardness, and high temperature alloy is typical difficult-to-machine material, and its machinability is excessively poor, frequently with the groove of obturaging of electrical discharge machining process processing guide vane.Existing groove processing of obturaging uses the large and small listrium that made by red copper to obturage groove activity machined electrode, on groove machined electrode of being obturaged by large and small listrium respectively two electrodes bases of assembling, the groove of obturaging then being separately fixed on electric spark machine tool on independent listrium large and small to guide vane is processed.Due to large and small listrium obturage groove machined electrode all in flake and made by red copper, loss in the course of processing is quickly, one guide vane of average often processing is accomplished by the electrode more renewed, owing to Working position degree and the requirement on machining accuracy of groove of obturaging are high, thus the assembly precision of electrode is required the highest, and frequently change the relative position consistency of electrode and electrodes base when electrode is difficult to ensure that every time assembling, easily cause electrode position and fluctuation occurs, and then the position degree of the groove that causes obturaging is difficult to ensure that.Further, the groove of obturaging that individually processing is individually processed on large and small listrium there is also the problem that working (machining) efficiency is low.Simultaneously as electrode is made by red copper and in flake, there is the deficiency of insufficient strength, in the groove course of processing of obturaging, electrode is easily deformed, and then affects machining accuracy, and the passing rate of processing of groove of obturaging is extremely low.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of obturage the Combined machining formula electrode of groove, to improve working (machining) efficiency and the passing rate of processing of groove of obturaging for processing aero-engine guide vane.
What this utility model provided obturages the Combined machining formula electrode of groove for processing aero-engine guide vane, including electrode and electrodes base, also include chuck, the first copper-tungsten block, the second copper-tungsten block, obturage the first electrode of groove and obturaging the second electrode of groove for processing little listrium for processing big listrium
First electrode is positioned at the end of the first copper-tungsten block and is integrated with the first copper-tungsten block, second electrode is positioned at the end of the second copper-tungsten block and is integrated with the second copper-tungsten block, first copper-tungsten block and the second copper-tungsten block are separately fixed at the two ends of electrodes base bottom surface, first electrode and the shape of the second electrode, on position listrium big with guide vane respectively and little listrium, the shape of groove of obturaging to be processed is consistent, position matches, first electrode and the second electrode are by the first copper-tungsten block and the second copper-tungsten block Milling Process molding after the first copper-tungsten block and the second alloy block are fixed on electrodes base；
Described chuck includes main shaft connecting portion that the main tapping of shape and electric spark machine tool matches and base connecting portion with threaded hole, and main shaft connecting portion installs through hole through the chuck arranged on electrodes base and base connecting portion is threadeded with electrodes base.
In technique scheme, the two ends of electrodes base are provided with inspection hole, are respectively used to detect the first electrode and second electrode position degree after Milling Process molding.
In technique scheme, the first copper-tungsten block and the second copper-tungsten block are equipped with after dowel hole and screwed hole, the first alloy block and the second alloy block are positioned by alignment pin and are threaded connection with electrodes base.
In technique scheme, the thickness of described first copper-tungsten block and the second copper-tungsten block is 35～45mm.
In technique scheme, the first electrode and the second electrode are to pass through CNC milling machine after the first copper-tungsten block and the second alloy block are fixed on electrodes base to the first copper-tungsten block and the second copper-tungsten block Milling Process molding.
In technique scheme, the copper content of described first copper-tungsten block and the second copper-tungsten block is 10%～50%.
Compared with prior art, this utility model has the advantages that
1. this utility model provides obturaging the Combined machining formula electrode of groove for processing aero-engine guide vane of a kind of new structure, this Combined machining formula electrode secures two pieces of copper-tungsten blocks on electrodes base, two electrodes that the structure of the groove of obturaging to be processed that the mode of employing Milling Process is processed on shape and position listrium big with guide vane respectively and little listrium on two pieces of alloy blocks and position match, after export license, the mode using Milling Process re-works out corresponding electrode to two pieces of copper-tungsten blocks, so can significantly reduce the frequency changing electrode, avoid the problem that the groove location degree of obturaging caused because frequent replacing electrode causes electrode position to fluctuate cannot ensure；Further, the groove of obturaging on two electrode listriums big to guide vane simultaneously and little listrium is processed, and can increase substantially working (machining) efficiency；Substituting the red copper material as making electrode using copper-tungsten, the intensity of copper-tungsten is bigger, and in use electrode is not easy deformation, is conducive to improving the machining accuracy of groove of obturaging, raising passing rate of processing.
2. it is respectively used to detect the first electrode and the inspection hole of second electrode position degree after Milling Process molding owing to the electrodes base of Combined machining formula electrode described in the utility model is provided with, and use CNC milling machine Milling Process the first electrode and the second electrode, above-mentioned factor all advantageously ensures that the first electrode and the machining accuracy of the second electrode, thus obturages the machining accuracy of groove for guide vane and position degree provides powerful guarantee.
3. owing to being equipped with dowel hole and screwed hole on the first copper-tungsten block of Combined machining formula electrode described in the utility model and the second copper-tungsten block, described copper-tungsten block is threaded connection with electrodes base after being positioned by alignment pin, thus when copper-tungsten block with to can not Milling Process becomes electrode again time, this connected mode is conducive to the copper-tungsten block that the most more renews.
4. experiment shows, obturage compared with groove activity machined electrode with using existing large and small listrium, it is groove of obturaging on the basin of the large and small listrium processing multi-joint guide vane, back of the body sagittal plane equally, use Combined machining formula electrode machining described in the utility model, the passing rate of processing of groove obturaged improves more than 60%, processing cost reduces more than 30%, and the process-cycle shortens more than 50%, and each group of the first electrode and the second electrode averagely can process 7～8 multi-joint guide vanes.
Accompanying drawing explanation
Fig. 1 is described in the utility model to obturage the structural representation of Combined machining formula electrode of groove for processing aero-engine guide vane；
Fig. 2 is the A direction view of Fig. 1；
Fig. 3 is the structural representation of the multi-joint guide vane of groove of obturaging to be processed in embodiment 3；
Fig. 4 is the structural representation of groove of obturaging in embodiment 3 on multi-joint guide vane big listrium basin sagittal plane and back of the body sagittal plane；
Fig. 5 is the structural representation of groove of obturaging in embodiment 3 on multi-joint guide vane little listrium basin sagittal plane and back of the body sagittal plane；
Fig. 6 is K1-K1 view and the K2-K2 view of Fig. 5 of Fig. 4；
The groove of obturaging on groove of obturaging, 15 little listrium basin sagittal planes and back of the body sagittal plane in figure, on 1 electrodes base, 2 chucks, 2-1 main shaft connecting portion, 2-2 base connecting portion, 3 first copper-tungsten blocks, 4 second copper-tungsten blocks, 5 first electrodes, 6 second electrodes, 7 inspection holes, 8 alignment pins, 9 screws, 10 big listrium basin sagittal planes, 11 little listrium basin sagittal planes, 12 big listrium back of the body sagittal planes, 13 little listrium back of the body sagittal planes, 14 big listrium basin sagittal planes and back of the body sagittal plane.
Detailed description of the invention
Below by embodiment, this utility model is specifically described; be necessary it is pointed out here that be; embodiment is served only for being further described this utility model; it is not intended that the restriction to this utility model protection domain; person skilled in art can make some nonessential improvement according to content of the present utility model and adjustment is embodied as, but such being embodied as should still fall within protection domain of the present utility model.
Embodiment 1
In the present embodiment, for process aero-engine guide vane obturage groove Combined machining formula electrode structural representation as shown in Figure 1, the A direction view of Fig. 1 is as shown in Figure 2, this Combined machining formula electrode includes electrodes base 1, chuck the 2, first copper-tungsten block the 3, second copper-tungsten block 4, obturages the first electrode 5 of groove and obturaging the second electrode 6 of groove for processing little listrium for processing big listrium
nullFirst electrode 5 is positioned at the end of the first copper-tungsten block 3 and is integrated with the first copper-tungsten block，Second electrode 6 is positioned at the end of the second copper-tungsten block 4 and is integrated with the second copper-tungsten block，It is provided with dowel hole and screwed hole on first copper-tungsten block and the second copper-tungsten block，First copper-tungsten block and the second copper-tungsten block by being fixed on the two ends of electrodes base 1 bottom surface by screw 9 behind alignment pin 8 location，The two ends of electrodes base are additionally provided with inspection hole 7，First electrode 5 and the shape of the second electrode 6、On position listrium big with guide vane respectively and little listrium, the shape of groove of obturaging to be processed is consistent、Position matches，First electrode and the second electrode are to pass through CNC milling machine after the first copper-tungsten block and the second alloy block are fixed on electrodes base to the first copper-tungsten block and the second copper-tungsten block Milling Process molding；The thickness of the first copper-tungsten block 4 and the second copper-tungsten block 5 is 35mm, and the copper content of the first copper-tungsten block 4 and the second copper-tungsten block 5 is 10wt%.
Described chuck 2 includes that main shaft connecting portion 2-1 that the main tapping of shape and electric spark machine tool matches and base connecting portion 2-1 with threaded hole, main shaft connecting portion 2-1 are installed through hole and base connecting portion 2-1 through the chuck arranged on electrodes base and be fixed on electrodes base by screw 9.
Embodiment 2
In the present embodiment, for process aero-engine guide vane obturage groove Combined machining formula electrode structural representation as shown in Figure 1, the A direction view of Fig. 1 is as shown in Figure 2, this Combined machining formula electrode includes electrodes base 1, chuck the 2, first copper-tungsten block the 3, second copper-tungsten block 4, obturages the first electrode 5 of groove and obturaging the second electrode 6 of groove for processing little listrium for processing big listrium
nullFirst electrode 5 is positioned at the end of the first copper-tungsten block 3 and is integrated with the first copper-tungsten block，Second electrode 6 is positioned at the end of the second copper-tungsten block 4 and is integrated with the second copper-tungsten block，It is provided with dowel hole and screwed hole on first copper-tungsten block and the second copper-tungsten block，First copper-tungsten block and the second copper-tungsten block by being fixed on the two ends of electrodes base 1 bottom surface by screw 9 behind alignment pin 8 location，The two ends of electrodes base are additionally provided with inspection hole 7，First electrode 5 and the shape of the second electrode 6、On position listrium big with guide vane respectively and little listrium, the shape of groove of obturaging to be processed is consistent、Position matches，First electrode and the second electrode are to pass through CNC milling machine after the first copper-tungsten block and the second alloy block are fixed on electrodes base to the first copper-tungsten block and the second copper-tungsten block Milling Process molding；The thickness of the first copper-tungsten block 4 and the second copper-tungsten block 5 is 45mm, and the copper content of the first copper-tungsten block 4 and the second copper-tungsten block 5 is 50wt%.
Described chuck 2 includes that main shaft connecting portion 2-1 that the main tapping of shape and electric spark machine tool matches and base connecting portion 2-1 with threaded hole, main shaft connecting portion 2-1 are installed through hole and base connecting portion 2-1 through the chuck arranged on electrodes base and be fixed on electrodes base by screw 9.
Embodiment 3
nullIn the present embodiment，The using method of Combined machining formula electrode described in the utility model is provided，The big listrium basin sagittal plane 10 of the Combined machining formula electrode machining that employing embodiment 1 or embodiment 2 the provide multi-joint guide vane of aero-engine power turbine as shown in Figure 3、Little listrium basin sagittal plane 11，Big listrium back of the body sagittal plane 12、Four grooves of obturaging on little listrium back of the body sagittal plane 13，Wherein，The structural representation of the groove 14 of obturaging on the big listrium basin sagittal plane of multi-joint guide vane and back of the body sagittal plane is as shown in Figure 4，The structural representation of the groove 15 of obturaging on the little listrium basin sagittal plane of multi-joint guide vane and back of the body sagittal plane is as shown in Figure 5，Fig. 6 is K1-K1 view and the K2-K2 view of Fig. 5 of Fig. 4，Multi-joint guide vane is made by high temperature alloy K438，The processing request of above-mentioned groove of obturaging is: groove width 0.8 ± 0.1mm、Groove depth 4 ± 0.2mm，Tolerance of Degree of position 0.3ARW.Operate as follows:
null(1) groove of obturaging on the big listrium basin sagittal plane 10 of multi-joint guide vane and little listrium basin sagittal plane 11 is processed: be directed to blade and be placed in and obturage in groove fixture for processing，Ensure that location can be rearward，It is directed to blade with pressing plate compress，The fixture fixing guide vane is fixed on the work top of electric spark machine tool，Combined machining formula electrode is fixed on the main shaft of electric spark machine tool by the chuck on base，Make the position to be processed that the first electrode and the second electrode are respectively aligned on guide vane big listrium basin sagittal plane and little listrium basin sagittal plane，Spark machined uses the pulse power，Adjust the voltage of spark machined、Electric current and discharging gap，And make to be full of between electrode and position to be processed electric spark processing liquid，Start electric spark machine tool，Make Combined machining formula electrode relatively obturage groove depth direction by set feeding rate listrium big to guide vane basin sagittal plane and little listrium basin sagittal plane on position to be processed carry out spark machined，After groove of obturaging on this sagittal plane machines，It is directed to blade take out from fixture，With obturaging, groove special measuring tool detects，Result shows to obturage the machining accuracy of groove and position degree and surface quality all meets the requirements.
null(2) groove of obturaging on sagittal plane 13 carried on the back by big listrium back of the body sagittal plane 12 and the little listrium of processing multi-joint guide vane: is placed in by the guide vane of step (1) completion of processing and obturages in groove fixture for processing，Ensure that location can be rearward，It is directed to blade with pressing plate compress，The fixture fixing guide vane is fixed on the work top of electric spark machine tool，Combined machining formula electrode is fixed on the main shaft of electric spark machine tool by the chuck on base，Make the position to be processed that the first electrode and the second electrode are respectively aligned on guide vane big listrium back of the body sagittal plane and little listrium back of the body sagittal plane，Spark machined uses the pulse power，Adjust the voltage of spark machined、Electric current and discharging gap，And make to be full of between electrode and position to be processed electric spark processing liquid，Start electric spark machine tool，Make Combined machining formula electrode relatively obturage groove depth direction by set feeding rate listrium big to guide vane the back of the body sagittal plane and little listrium the back of the body sagittal plane on position to be processed carry out spark machined，After groove of obturaging on this sagittal plane machines，It is directed to blade take out from fixture，With obturaging, groove special measuring tool detects，Result shows to obturage the machining accuracy of groove and position degree and surface quality all meets the requirements.
During groove of obturaging is processed, when after the first electrode and the second export license, by the first electrode after loss and the second electrode mill off, CNC milling machine is used to proceed to obturage after the copper-tungsten being fixed on electrodes base being reprocessed into electrode in the way of Milling Process the processing of groove, when the first copper-tungsten block and the second copper-tungsten block are with to after can not being milled into the first electrode and the second electrode, the first copper-tungsten block on electrodes base and the second copper-tungsten block are replaced with new and Milling Process the first electrode and the second electrode again.
Obturage compared with groove activity machined electrode with using existing large and small listrium, it is the groove of obturaging processing above-mentioned multi-joint guide vane equally, the passing rate of processing of groove obturaged improves more than 60%, each group of the first electrode and the second electrode averagely can process 7～8 multi-joint guide vanes, processing cost reduces more than 30%, and the process-cycle shortens more than 50%.
Claims (6)
1. obturage the Combined machining formula electrode of groove for processing aero-engine guide vane, including electrode and electrodes base (1), characterized by further comprising chuck (2), the first copper-tungsten block (3), the second copper-tungsten block (4), obturage first electrode (5) of groove and obturaging second electrode (6) of groove for processing little listrium for processing big listrium
First electrode (5) is positioned at the end of the first copper-tungsten block (3) and is integrated with the first copper-tungsten block, second electrode (6) is positioned at the end of the second copper-tungsten block (4) and is integrated with the second copper-tungsten block, first copper-tungsten block and the second copper-tungsten block are separately fixed at the two ends of electrodes base bottom surface, first electrode (5) and the shape of the second electrode (6), on position listrium big with guide vane respectively and little listrium, the shape of groove of obturaging to be processed is consistent, position matches, first electrode and the second electrode are by the first copper-tungsten block and the second copper-tungsten block Milling Process molding after the first copper-tungsten block and the second alloy block are fixed on electrodes base；
Described chuck (2) includes main shaft connecting portion (2-1) that the main tapping of shape and electric spark machine tool matches and base connecting portion (2-2) with threaded hole, and main shaft connecting portion (2-1) is threadeded through the chuck installation through hole arranged on electrodes base and base connecting portion (2-2) with electrodes base.
Obturage the Combined machining formula electrode of groove for processing aero-engine guide vane the most according to claim 1, it is characterised in that the two ends of electrodes base are provided with inspection hole (7).
Obturage the Combined machining formula electrode of groove for processing aero-engine guide vane the most according to claim 1, it is characterized in that being equipped with on the first copper-tungsten block and the second copper-tungsten block after dowel hole and screwed hole, the first copper-tungsten block and the second copper-tungsten block are positioned by alignment pin (8) and be threaded connection with electrodes base.
4. obturage the Combined machining formula electrode of groove for processing aero-engine guide vane according to described in claim 1 or 2 or 3, it is characterised in that the thickness of described first copper-tungsten block (3) and the second copper-tungsten block (4) is 35～45mm.
5. obturage the Combined machining formula electrode of groove for processing aero-engine guide vane according to described in claim 1 or 2 or 3, it is characterised in that the first electrode and the second electrode are to pass through CNC milling machine the first copper-tungsten block and the second alloy block are fixed on electrodes base after to the first copper-tungsten block and the second copper-tungsten block Milling Process molding.
Obturage the Combined machining formula electrode of groove for processing aero-engine guide vane the most according to claim 4, it is characterised in that the first electrode and the second electrode are to pass through CNC milling machine the first copper-tungsten block and the second alloy block are fixed on electrodes base after to the first copper-tungsten block and the second copper-tungsten block Milling Process molding.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521010381.8U CN205614150U (en) | 2015-12-08 | 2015-12-08 | A combination processing formula electrode for processing aeroengine guide blade groove of obturaging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521010381.8U CN205614150U (en) | 2015-12-08 | 2015-12-08 | A combination processing formula electrode for processing aeroengine guide blade groove of obturaging |
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| CN205614150U true CN205614150U (en) | 2016-10-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397216A (en) * | 2015-12-08 | 2016-03-16 | 四川成发航空科技股份有限公司 | Combined processing-type electrode used for machining sealing grooves of aero-engine guide blades |
| CN110497338A (en) * | 2019-08-16 | 2019-11-26 | 成都和鸿科技有限公司 | A kind of heavy duty gas turbine stator blade obturages grooving apparatus and its processing method |
-
2015
- 2015-12-08 CN CN201521010381.8U patent/CN205614150U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397216A (en) * | 2015-12-08 | 2016-03-16 | 四川成发航空科技股份有限公司 | Combined processing-type electrode used for machining sealing grooves of aero-engine guide blades |
| CN110497338A (en) * | 2019-08-16 | 2019-11-26 | 成都和鸿科技有限公司 | A kind of heavy duty gas turbine stator blade obturages grooving apparatus and its processing method |
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