CN103586285A - Designing and manufacturing method of pad tile for adjusting aviation engine blade rolling - Google Patents
Designing and manufacturing method of pad tile for adjusting aviation engine blade rolling Download PDFInfo
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- CN103586285A CN103586285A CN201310507843.6A CN201310507843A CN103586285A CN 103586285 A CN103586285 A CN 103586285A CN 201310507843 A CN201310507843 A CN 201310507843A CN 103586285 A CN103586285 A CN 103586285A
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Abstract
The invention discloses a designing and manufacturing method of a pad tile for adjusting aviation engine blade rolling. The designing method includes: analyzing feasibility of using the pad tile to adjust the thickness of an aviation engine blade rolling die; designing the inner diameter size and outer diameter size of the pad tile; designing the outer contour of the pad tile and fixing the positions of screw holes; designing eccentric angle position and eccentricity of the pad tile; selecting materials and hardness of the pad tile. The manufacturing method includes: selecting a tubular blank according to designing size; lathing the inner diameter and outer diameter of the tubular blank; grinding the inner diameter of the tubular blank; cutting the tubular blank into an annular piece with the width containing three pad tiles; performing heat treatment on the annular piece; cutting the annular piece into pad tiles; using a cylindrical grinder to grind eccentric excircles; sharp edge rounding and bluing; detecting the pad tiles. By using the pad tile to adjust the thickness of the aviation engine blade rolling die, the service life of the aviation engine blade rolling die can be increased by more than 10 times. Compared with a linear cutting method, the manufacturing method is low in production cost, high in machining precision and time saving.
Description
Technical field
The invention belongs to blade mechanism manufacture field, particularly design and the manufacture method of pad watt for a kind of blade of aviation engine rolling adjustment.
Background technology
At present, blade of aviation engine manufacture adopts without the accurate rolling of surplus and woollen precision molding technology thereof.This technology owing to thering is low cost of manufacture, the feature such as production efficiency is high and the more conventional manufacturing process of product structure property is more excellent, become the advanced technology that blade is manufactured, the extremely attention of World Developed Countries.
Blade roll milling mould is the most important instrument of blade forming.In blade roll milling mould process, leave the repairing surplus of about 0.1～0.2mm for the finishing of mould.Mould is in repair procedures, and the thickness of mould reduces gradually, now needs to guarantee by the method for adjusting the blade roll milling machine magnitude of interference rolling thickness of blade.But the magnitude of interference adjustment of blade roll milling machine is limited, is 0.3mm to the maximum, if the magnitude of interference of adjusting is excessive, the damage of roller mill will be caused.And the trim amount of rolling mould one side is while being greater than 0.15mm, mould will be scrapped.Therefore, blade of aviation engine manufacturing is badly in need of a kind of raising rolling die life, with the method reducing production costs.
Summary of the invention
Object of the present invention is exactly for adapting to the above-mentioned needs of blade of aviation engine manufacturing, and design and the manufacture method of a kind of blade of aviation engine rolling adjustment with pad watt are provided, and adjusts a thickness for rolling mould, the service life of improving mould by pad watt.
The method for designing of pad watt for blade of aviation engine rolling adjustment of the present invention, carry out according to the following steps:
Step 1, use pad watt are adjusted a feasibility analysis for blade of aviation engine rolling mold thickness:
In blade of aviation engine rolling process, because die face rolling blade is defective or profile occurs to wear and tear, all need die face to place under repair, can make thus the thickness of mould reduce, the blade that causes rolling increases defective because of thickness, when the trim amount of mould one side is greater than 0.15mm, mould must be scrapped; Between mould internal diameter after thickness reduces and roll mandrel, set up with roll mandrel and mould in ring laminating good and there is the pad watt of sufficient intensity carrying rolling force, with it, make up reducing of the each rear thickness of repairing of mould, can make mould continue to use, until mould thickness after repeatedly repairing is reduced in the time of can not repairing again, scrap, can be extended the service life of mould again;
The dimension of inner and outer diameters of step 2, design pad watt:
Owing to bearing larger roll-force in the blade operation of rolling, the inside and outside footpath of pad watt must be respectively and roll mandrel and mould good fit; And in suitability for industrialized production, the size of the size of the roll diameter of axle and mould internal diameter can not change easily, in order to guarantee the intensity of pad watt, take into account the intensity of roll mandrel and mould, ring design size R in mould simultaneously
1should with roll diameter of axle consistent size; Outer shroud design size R
2should with mould inner circle consistent size; And make inner and outer rings difference in size R
2-R
1=3.5mm;
The outline of step 3, design pad watt and the position of fixing screw hole:
The outer profile size of pad watt determines according to the overall size of mould, the width L=64mm of pad watt, and central angle is 115-120 °; Because pad watt in use needs to be fixed on roll mandrel, therefore need design the hole of hold-down screw on pad watt, for being played simultaneously, screw hole prevents the effect of pad watt anti-dress, the position in hole be not located at pad watt center, and be located at 60 ° of its line-spacing pad watt rear ends, center, locate, with 1 ° of the lack of alignment of pad watt;
Eccentric angle position and the offset of step 4, design pad watt:
In pad watt inside and outside footpath and the fixed situation of outer profile size, in order to make pad watt there is adjustment function to mould, make pad watt realize in one direction inside and outside footpath bias; According to the characteristic of rolling vane, reduce the eccentric impact that mold thickness is changed to inhomogeneities of adjusting simultaneously, maximum eccentricity amount should be in half position of rolling length of blade, and design angle is defined as apart from 45-55 ° of pad watt front end faces; Because the adjustment of mold thickness is to realize by serial offset, therefore every milling train need to design two covers, respectively containing the pad watt of serial thickness, the thickness deviation allowing according to blade, the difficulty of processing of pad watt, the thickness of every sleeve gasket watt is adjusted difference and be should be 0.1mm, according to the maximum of mould, repair thickness, the maximum e=2.5mm of offset;
Step 5, select material and the hardness of pad watt:
Because pad watt in use will bear larger roll-force, pad watt should have higher hardness and intensity, and pad watt material is selected Cr12MoV or T8A or T10A, and final hardness should be between HRC55～62.
Because the adjustment of mold thickness is to realize by serial offset, every sleeve gasket watt needs have 30 plurality of specifications, each is a set of for upper/lower die, every milling train will be equipped with two covers, totally 60 multi-disc pads watt, if adopt ordinary lines cutting processing, surface quality after processing is poor, and dimensional accuracy is low, can not meet instructions for use; If adopt the silk thread cutting processing of being careful, large quantity like this, not only production cost is high, and machining period is long, and processing a slice needs 20 hours.For this reason, the present invention also provides following manufacture method to the blade of aviation engine rolling adjustment of above design with pad watt:
Step 1, according to design size, select tubular blank, the diameter of bore of tubular blank is between 68～74mm, and external diameter determines according to the thickness of pad watt, and length determines according to actual processing, and the monolateral allowance in inside and outside footpath is not less than 1mm;
The inside and outside footpath of step 2, the above-mentioned tubular blank of Vehicle Processing, stays grinding allowance 0.1mm;
Step 3, to through step 2 processing pipe fitting internal diameter carry out grinding, guarantee that machining accuracy meets technological requirement;
Step 4, by through step 3 processing pipe fitting be cut into ring, make the width of each ring comprise three pads watt, in ring, draw the Working position of screw hole simultaneously, and drilling screw hole;
Step 5, by Technology for Heating Processing, ring is heat-treated, make its hardness reach designing requirement;
Step 6, by each ring after Overheating Treatment cut into three pad watt;
Step 7, pad watt is screwed and is had on the fixture of adjusting eccentric function, with cylindrical grinder grinding eccentric excircle;
Step 8, the pad watt that process step 7 is processed carry out sharp Edge Blend and turn blue;
Step 9, the pad watt that adopts three coordinate measuring machine or micrometer to process completing steps 8 carry out thickness detection, and it is qualified products that thickness meets technological requirement.
The invention has the beneficial effects as follows: with the pad watt of the present invention's design, adjust the thickness of blade of aviation engine rolling mould, in the service life that can effectively improve mould, be proven, can improve more than 10 times remarkable in economical benefits the service life of mould; With pad method for manufacturing tile processing pad watt ratio wire cutting method for blade of aviation engine rolling adjustment provided by the invention, machining accuracy is high, and production cost is low, expends man-hour few.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the blade of aviation engine rolling adjustment with method for designing of the present invention design with pad watt;
Fig. 2 is the center line M-M cutaway view along screw hole in Fig. 1.
The specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
The present embodiment is certain type blade of aviation engine rolling adjustment by the method for designing of pad watt, carries out according to the following steps:
Step 1, use pad watt are adjusted a feasibility analysis for certain type blade of aviation engine rolling mold thickness
In this type blade of aviation engine rolling process, because die face rolling blade is defective or profile wearing and tearing occur all needs die face to place under repair, cause mold thickness to reduce, the vane thickness that can make rolling as continued use increases and defective.When the trim amount of mould one side is greater than 0.15mm, mould must be scrapped.Between mould internal diameter after thickness reduces and roll mandrel, set up with roll mandrel and mould in ring can good fit and there is the pad watt of sufficient intensity carrying rolling force, with it, make up reducing of the each rear thickness of repairing of mould, can make mould continue to use, until mould is reduced to can not repair time again and scraps through repeatedly repairing thickness, can be extended the service life of mould;
The dimension of inner and outer diameters of step 2, design pad watt
Owing to bearing larger roll-force in the blade operation of rolling, the inside and outside footpath of pad watt must be respectively and roll mandrel and the good laminating of mould; And in suitability for industrialized production, the size of the size of the roll diameter of axle and mould internal diameter can not change easily, in order to guarantee the intensity of pad watt, take into account the intensity of roll mandrel and mould simultaneously, in Fig. 1, in mould ring design size should with roll diameter of axle consistent size, be R
1=38mm; Outer shroud design size should with mould inner circle consistent size, be R
2=41.5mm; Inner and outer rings difference in size is R
2-R
1=3.5mm;
The outline of step 3, design pad watt and the position of fixing screw hole
Pad watt outer profile size should determine according to the overall size of mould, the present embodiment as shown in Figure 1, pad watt width be L=64mm, central angle is 118 °; For pad watt is fixed on roll mandrel, on pad watt, design the hole of hold-down screw, for being played simultaneously, this screw hole prevents an effect for pad watt anti-dress, the center line M-M of screw hole is located at apart from 60 ° of pad watt rear ends and is located, with 1 ° of the lack of alignment of pad watt;
Eccentric angle position and the offset of step 4, design pad watt
After pad watt inside and outside footpath and outer profile size are determined, for making pad watt there is adjustment function to mould, make pad watt realize in one direction inside and outside footpath bias; According to the characteristic of rolling vane, reduce the eccentric impact that mold thickness is changed to inhomogeneities of adjusting simultaneously, maximum eccentricity amount should be in half position of rolling length of blade, and as shown in Figure 1, design angle is defined as apart from 50 ° of front end faces the present embodiment; Because the adjustment of mold thickness is to realize by serial offset, every milling train need to design two covers, respectively containing the pad watt of 30 kinds of thickness, the thickness deviation allowing according to blade, the difficulty of processing of pad watt, it is 0.1mm that the thickness of the pad of 30 kinds of thickness watt is adjusted difference, according to the maximum of mould, repair thickness, the maximum e=2.5mm of offset;
Step 5, selection pad watt material and hardness
Because pad watt in use will bear larger roll-force, for guaranteeing that pad watt has higher hardness and intensity, pad watt material is selected Cr12MoV, and final hardness is HRC60.
The pad watt for certain type blade of aviation engine rolling adjustment of manufacturing above-mentioned design, carries out according to the following steps:
Step 1: select tubular blank according to above-mentioned design size, the diameter of bore of tubular blank is 70mm, external diameter is defined as 92mm according to the thickness of pad watt, and length is 650mm, and the monolateral allowance in inside and outside footpath is 3mm;
Step 2: the inside and outside footpath of the above-mentioned tubular blank of Vehicle Processing, stay grinding allowance 0.1mm;
Step 3: to through step 2 processing pipe fitting internal diameter carry out grinding, guarantee that its machining accuracy reaches 0.01mm;
Step 4: by through step 3 processing pipe fitting be cut into ring, make the width of each ring comprise three pads watt, in ring, draw the Working position of screw hole, and bored screw hole simultaneously;
Step 5: ring is heat-treated with heat-treatment furnace by Technology for Heating Processing, make its hardness reach HRC60;
Step 6: each ring after Overheating Treatment is cut into three pads watt;
Step 7: pad watt is screwed having on the fixture of adjusting eccentric function, presses designing requirement grinding eccentric excircle with cylindrical grinder;
Step 8: the pad watt through step 7 processing is carried out sharp Edge Blend and turned blue;
Step 9: adopt three coordinate measuring machine to carry out thickness detection to the pad watt of completing steps 8 processing, it is qualified products that thickness meets technological requirement.
Claims (5)
- The adjustment of blade of aviation engine rolling with pad watt a method for designing, it is characterized in that carrying out according to the following steps:Step 1, use pad watt are adjusted a feasibility analysis for blade of aviation engine rolling mold thickness:In blade of aviation engine rolling process, because die face rolling blade is defective or profile occurs to wear and tear, all need die face to place under repair, can make thus the thickness of mould reduce, the blade that causes rolling increases defective because of thickness, when the trim amount of mould one side is greater than 0.15mm, mould must be scrapped; Between mould internal diameter after thickness reduces and roll mandrel, set up with roll mandrel and mould in ring laminating good and there is the pad watt of sufficient intensity carrying rolling force, with it, make up reducing of the each rear thickness of repairing of mould, can make mould continue to use, until mould thickness after repeatedly repairing is reduced in the time of can not repairing again, scrap, can be extended the service life of mould again;The dimension of inner and outer diameters of step 2, design pad watt:Owing to bearing larger roll-force in the blade operation of rolling, the inside and outside footpath of pad watt must be respectively and roll mandrel and mould good fit; And in suitability for industrialized production, the size of the size of the roll diameter of axle and mould internal diameter can not change easily, in order to guarantee the intensity of pad watt, take into account the intensity of roll mandrel and mould, ring design size R in mould simultaneously 1should with roll diameter of axle consistent size; Outer shroud design size R 2should with mould inner circle consistent size; And make inner and outer rings difference in size R 2-R 1=3.5mm;The outline of step 3, design pad watt and the position of fixing screw hole:The outer profile size of pad watt determines according to the overall size of mould, the width L=64mm of pad watt, and central angle is 115-120 °; Because pad watt in use needs to be fixed on roll mandrel, therefore need design the hole of hold-down screw on pad watt, for being played simultaneously, screw hole prevents the effect of pad watt anti-dress, the position in hole be not located at pad watt center, and be located at 60 ° of its line-spacing pad watt rear ends, center, locate, with 1 ° of the lack of alignment of pad watt;Eccentric angle position and the offset of step 4, design pad watt:In pad watt inside and outside footpath and the fixed situation of outer profile size, in order to make pad watt there is adjustment function to mould, make pad watt realize in one direction inside and outside footpath bias; According to the characteristic of rolling vane, reduce the eccentric impact that mold thickness is changed to inhomogeneities of adjusting simultaneously, maximum eccentricity amount should be in half position of rolling length of blade, and design angle is defined as apart from 45-55 ° of pad watt front end faces; Because the adjustment of mold thickness is to realize by serial offset, therefore every milling train need to design two covers, respectively containing the pad watt of serial thickness, the thickness deviation allowing according to blade, the difficulty of processing of pad watt, the thickness of every sleeve gasket watt is adjusted difference and be should be 0.1mm, according to the maximum of mould, repair thickness, the maximum e=2.5mm of offset;Step 5, select material and the hardness of pad watt:Because pad watt in use will bear larger roll-force, pad watt should have higher hardness and intensity, and pad watt material is selected Cr12MoV or T8A or T10A, and final hardness should be between HRC55～62.
- 2. the method for designing of pad watt for blade of aviation engine rolling adjustment according to claim 1, is characterized in that the central angle of pad in described step 3 watt is 118 °.
- 3. the method for designing of pad watt for blade of aviation engine rolling adjustment according to claim 1, the design angle that it is characterized in that maximum eccentricity amount in described step 4 is for apart from 50 ° of pad watt front end faces.
- 4. the method for designing of pad watt for blade of aviation engine rolling adjustment according to claim 1, is characterized in that in described step 5, pad watt material is selected a Cr12MoV, and final hardness is HRC60.
- 5. the manufacture method with pad watt with the blade of aviation engine rolling adjustment of claim 1 method for designing design, is characterized in that carrying out according to the following steps:Step 1, according to design size, select tubular blank, the diameter of bore of tubular blank is between 68～74mm, and external diameter determines according to the thickness of pad watt, and length determines according to actual processing, and the monolateral allowance in inside and outside footpath is not less than 1mm;The inside and outside footpath of step 2, the above-mentioned tubular blank of Vehicle Processing, stays grinding allowance 0.1mm;Step 3, to through step 2 processing pipe fitting internal diameter carry out grinding, guarantee that machining accuracy meets technological requirement;Step 4, by through step 3 processing pipe fitting be cut into ring, make the width of each ring comprise three pads watt, in ring, draw the Working position of screw hole simultaneously, and drilling screw hole;Step 5, by Technology for Heating Processing, ring is heat-treated, make its hardness reach designing requirement;Step 6, by each ring after Overheating Treatment cut into three pad watt;Step 7, pad watt is screwed and is had on the fixture of adjusting eccentric function, with cylindrical grinder grinding eccentric excircle;Step 8, the pad watt that process step 7 is processed carry out sharp Edge Blend and turn blue;Step 9, the pad watt that adopts three coordinate measuring machine or micrometer to process completing steps 8 carry out thickness detection, and it is qualified products that thickness meets technological requirement.
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| CN201310507843.6A CN103586285B (en) | 2013-10-23 | 2013-10-23 | Blade of aviation engine rolling adjustment with pad watt design and manufaction method |
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|---|---|---|---|
| CN201310507843.6A CN103586285B (en) | 2013-10-23 | 2013-10-23 | Blade of aviation engine rolling adjustment with pad watt design and manufaction method |
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Cited By (3)
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| CN105195980A (en) * | 2015-10-26 | 2015-12-30 | 西安航空动力股份有限公司 | Machining device and method for annular flame tube floating wall tile stud |
| CN106239196A (en) * | 2016-08-26 | 2016-12-21 | 中航动力股份有限公司 | A kind of annular flame tube floating wall tile stud processing milling machine fixture and localization method |
| CN106583457A (en) * | 2016-11-25 | 2017-04-26 | 沈阳黎明航空发动机(集团)有限责任公司 | Tool for finishing die profile of blade rolling die and using method |
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| CN103586285B (en) | 2015-08-19 |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |
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Granted publication date: 20150819 Termination date: 20201023 |