CN102248467B - Numerical control polishing method for blade edge plate and blade transitional arc part - Google Patents
Numerical control polishing method for blade edge plate and blade transitional arc part Download PDFInfo
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- CN102248467B CN102248467B CN 201110163279 CN201110163279A CN102248467B CN 102248467 B CN102248467 B CN 102248467B CN 201110163279 CN201110163279 CN 201110163279 CN 201110163279 A CN201110163279 A CN 201110163279A CN 102248467 B CN102248467 B CN 102248467B
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Abstract
The invention provides a numerical control polishing method for a blade edge plate and a blade transitional arc part. The method comprises the following steps of: machining a profiling mold according to a size R, wherein the radius of a transitional arc is R; machining a polishing wheel by using the profiling mold as a mold; and determining a polishing track in a numerical control system, and finishing the numerical control polishing of the blade edge plate and the blade transitional arc part by using the machined polishing wheel. In the method, the profiling mold for blades in the same batch is manufactured, and the polishing wheel is machined, so that the transitional arc part can be conveniently polished mechanically and automatically, the quality stability of the surface of the transitional arc part can be ensured, polishing consistency is high, and polishing efficiency and stability are greatly improved.
Description
Technical field
The present invention relates to the field of machining of engine blade, be specially the numerical control polishing method of blade listrium and blade transition arc part.
Background technology
In engine art, aero-engine field of machining especially, the crudy of blade has important impact to the reliability of aero-engine, and the surface quality of blade directly has influence on the aeroperformance of blade, and then have influence on the performance of aero-engine.It is the main method that improves the blade surface quality that polishing is processed, also there are a lot of disclosed technical literatures to propose various device and method for the polishing of blade, such as patent 200610155853.8 a kind of five-coordinate self-adaption leaf blade polishing machine has been proposed, patent 02824300.5 has proposed a kind of method and apparatus for polishing gas turbine blades surface, also have patent 200520020307.4 to design a kind of leaf blade polishing machine, but often all be that blade for blade partly carries out polishing in these public technologies, do not mention how blade listrium and blade transition arc partly being carried out polishing, and in the present actual process, the artificial polishing mode of main employing, namely sand paper is rolled on finger or the bar with certain circular arc, finger or bar are moved back and forth along transition, also can use with the bar shaped oilstone of certain circular arc reciprocating along transition arc, artificial polishing process removal amount like this is inhomogeneous, transition arc partial shape precision is difficult to control, the reduced stiffness that might cause blade, labour intensity is large in addition, technology and experience to the workman require very high, efficient is low, can not satisfy the demand that blade is produced in enormous quantities far away.
Summary of the invention
The technical problem that solves
Can not satisfy the problem of blade production demand for solving existing artificial finishing method, the present invention proposes the numerical control polishing method of blade listrium and blade transition arc part.
Technical scheme
Technical scheme of the present invention is:
Described numerical control polishing method following steps:
Step 1: from blade design drawing or blade theoretical model, obtain blade listrium and blade transition arc radius R;
Step 2: adopt milling mode processing pattern: the pattern matrix is cuboid, and flat stone mill is carried out in the cuboid bottom surface, flatness≤0.01; Have pattern and gathering sill in the pattern matrix, pattern is 1/4th concave spherical surfaces, is used for the processing polished wheel, and the concave spherical surface radius is identical with transition arc radius R, and the concave sphere's center distance vertically distance of radial location datum level is R; The pattern back segment is gathering sill, guiding polishing wheel when being used for the processing polished wheel, and gathering sill is 1/2nd fluted columns, and the fluted column radius is R, and the fluted column axis is R apart from the distance of vertical radial location datum level, and fluted column length is 5～15mm; The gathering sill end has horizontal radial positioning reference plane and axial location datum level, the distance of horizontal radial positioning datum identity distance pattern body upper surface is R+3mm～R+10mm, the depth of parallelism of horizontal radial positioning reference plane and pattern matrix bottom surface≤0.012, the perpendicularity of axial location datum level and pattern matrix bottom surface≤0.012;
Step 3: processing polished wheel: work top is fixed in the pattern substrate, select cylindrical polishing wheel, the polishing wheel bottom surface is coaxial fixing with machining spindle, adjusting machining spindle makes main shaft axially vertical with the axial location datum level, adopt polishing wheel bottom surface and axial location datum level to carry out tool setting, adopt again polishing wheel cylindrical and horizontal radial positioning reference plane and vertical radial location datum level to carry out tool setting, then main shaft rotates and moves machining spindle along gathering sill, the polishing wheel head is processed as hemispherical, and half radius of a ball is r, and the r scope is 3mm≤r≤R;
Step 4: in digital control system, determine polishing locus: the equidistant surface R that in digital control system, gets respectively the blade blade according to distance r along the exterior normal direction
1Equidistant surface S with profile in the blade listrium
1According to distance r/10,2r/10 ..., (n-1) r/10 gets R along the exterior normal direction successively
1Equidistant surface R
2, R
3..., R
n, wherein
R and R unit are mm in the formula, ask for R
1～R
nWith S
1Intersection l
i, i=1～n; According to distance r/10,2r/10 ..., (n-1) r/10 gets S along the exterior normal direction successively
1Equidistant surface S
2, S
3..., S
n, ask for S
2～S
nWith R
1Intersection m
j, j=2～n; l
iAnd m
jBe the polishing locus of polishing wheel numerical control polishing process;
Step 5: after polished blade and polishing wheel tool setting, finish blade listrium and blade transition arc numerical control polishing partly according to the polishing locus control polishing wheel that step 4 is determined.
Beneficial effect
The present invention passes through same batch of leaf production pattern, behind the processing polished wheel, can realize easily the automatic and mechanical polishing of transition arc part, can guarantee that the surface quality of transition arc part is stable, the high conformity of polishing, and polishing efficiency and stability improve greatly.
Description of drawings
Fig. 1: the structural representation of pattern;
Fig. 2: polishing process schematic diagram;
Fig. 3: polishing wheel schematic diagram;
Wherein: 1, pattern matrix; 2, pattern; 3, gathering sill; 4, vertical radial location datum level; 5, horizontal radial positioning reference plane; 6, axial location datum level; 7, blade; 8, transition arc; 9, blade listrium; 10, polishing wheel.
The specific embodiment
Below in conjunction with specific embodiment the present invention is described:
In the present embodiment the transition arc 8 of certain type blade of aviation engine listrium and blade carried out polishing.
Step 1: obtain the radius R of blade listrium and blade transition arc 8 from the blade design drawing, the radius size precision is ± 0.01mm;
Step 2: adopt milling mode processing pattern at CNC milling machine: with reference to accompanying drawing 1, pattern matrix 1 is cuboid, and flat stone mill is carried out in the cuboid bottom surface, flatness≤0.01; In pattern matrix 1, have pattern 2 and gathering sill 3; pattern 2 is 1/4th concave spherical surfaces; be used for the processing polished wheel; the concave spherical surface radius is identical with transition arc radius R; the concave sphere's center distance vertically distance of radial location datum level 4 is R; the vertical perpendicularity of radial location datum level 4 and pattern matrix bottom surface≤0.012 wherein, the machining accuracy of pattern 2 is ± 0.01mm surface roughness R
aBe 12.5～25; Pattern 2 back segments are gathering sill 3, guiding polishing wheel when being used for the processing polished wheel, and gathering sill is 1/2nd fluted columns, the fluted column radius is R, the fluted column axis is R apart from the distance of vertical radial location datum level 4, and fluted column length is 5～15mm, and the machining accuracy of gathering sill 3 is ± 0.01mm; The gathering sill end has horizontal radial positioning reference plane 5 and axial location datum level 6, horizontal radial positioning reference plane 5 is R+3mm～R+10mm apart from the distance of pattern body upper surface, the depth of parallelism of horizontal radial positioning reference plane 5 and pattern matrix bottom surface≤0.012, the perpendicularity of axial location datum level 6 and pattern matrix bottom surface≤0.012;
Step 3: processing polished wheel: work top is fixed in pattern substrate 1, select cylindrical polishing wheel, the polishing wheel bottom surface is coaxial fixing with machining spindle, adjusting machining spindle makes main shaft axially vertical with axial location datum level 6, adopt polishing wheel bottom surface and axial location datum level to carry out tool setting, the tool setting precision is ± 0.01mm, adopt again polishing wheel cylindrical and horizontal radial positioning reference plane 5 and vertical radial location datum level 4 to carry out tool setting, the tool setting precision is ± 0.01mm, then main shaft rotates and moves machining spindle along gathering sill, after being the length of gathering sill when displacement, beginning processing polished wheel head then continues along the slow at the uniform velocity mobile machining spindle of gathering sill, the polishing wheel head is processed as hemispherical, and half radius of a ball is r, and the r scope is 3mm≤r≤R, the r=R that processing obtains in the present embodiment; Polishing wheel 10 heads that process are hemispherical, and main body is cylindrical, as shown in Figure 3.
Step 4: in digital control system, determine polishing locus: the equidistant surface R that in digital control system, gets respectively the blade blade according to distance r along the exterior normal direction
1Equidistant surface S with profile in the blade listrium
1According to distance r/10,2r/10 ..., (n-1) r/10 gets R along the exterior normal direction successively
1Equidistant surface R
2, R
3..., R
n, wherein
R and R unit are mm in the formula, and the n=2 that obtains in the present embodiment asks for R
1And R
2With S
1Intersection l
i, i=1～2; Get S along the exterior normal direction successively according to distance r/10
1Equidistant surface S
2, ask for S
2With R
1Intersection m
j, j=2; l
iAnd m
jBe the polishing locus of polishing wheel numerical control polishing process;
Step 5: after polished blade and polishing wheel tool setting, finish blade listrium and blade transition arc numerical control polishing partly according to the polishing locus control polishing wheel that step 4 is determined, polishing process is illustrated as shown in Figure 2.
Claims (1)
1. the numerical control polishing method of a blade listrium and blade transition arc part, it is characterized in that: described numerical control polishing method is comprised of following steps:
Step 1: from blade design drawing or blade theoretical model, obtain blade listrium and blade transition arc radius R;
Step 2: adopt milling mode processing pattern: the pattern matrix is cuboid, and flat stone mill is carried out in the cuboid bottom surface, flatness≤0.01; Have pattern and gathering sill in the pattern matrix, pattern is 1/4th concave spherical surfaces, is used for the processing polished wheel, and the concave spherical surface radius is identical with transition arc radius R, and the concave sphere's center distance vertically distance of radial location datum level is R; The pattern back segment is gathering sill, guiding polishing wheel when being used for the processing polished wheel, and gathering sill is 1/2nd fluted columns, and the fluted column radius is R, and the fluted column axis is R apart from the distance of vertical radial location datum level, and fluted column length is 5～15mm; The gathering sill end has horizontal radial positioning reference plane and axial location datum level, the distance of horizontal radial positioning datum identity distance pattern body upper surface is R+3mm～R+10mm, the depth of parallelism of horizontal radial positioning reference plane and pattern matrix bottom surface≤0.012, the perpendicularity of axial location datum level and pattern matrix bottom surface≤0.012;
Step 3: processing polished wheel: work top is fixed in the pattern substrate, select cylindrical polishing wheel, the polishing wheel bottom surface is coaxial fixing with machining spindle, adjusting machining spindle makes main shaft axially vertical with the axial location datum level, adopt polishing wheel bottom surface and axial location datum level to carry out tool setting, adopt again polishing wheel cylindrical and horizontal radial positioning reference plane and vertical radial location datum level to carry out tool setting, then main shaft rotates and moves machining spindle along gathering sill, the polishing wheel head is processed as hemispherical, and half radius of a ball is r, and the r scope is 3mm≤r≤R;
Step 4: in digital control system, determine polishing locus: the equidistant surface R that in digital control system, gets respectively the blade blade according to distance r along the exterior normal direction
1Equidistant surface S with profile in the blade listrium
1According to distance r/10,2r/10 ..., (n-1) r/10 gets R along the exterior normal direction successively
1Equidistant surface R
2, R
3..., R
n, wherein
R and R unit are mm in the formula, ask for R
1～R
nWith S
1Intersection l
i, i=1～n; According to distance r/10,2r/10 ..., (n-1) r/10 gets S along the exterior normal direction successively
1Equidistant surface S
2, S
3..., S
n, ask for S
2～S
nWith R
1Intersection m
j, j=2～n; l
iAnd m
jBe the polishing locus of polishing wheel numerical control polishing process;
Step 5: after polished blade and polishing wheel tool setting, finish blade listrium and blade transition arc numerical control polishing partly according to the polishing locus control polishing wheel that step 4 is determined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110163279 CN102248467B (en) | 2011-06-16 | 2011-06-16 | Numerical control polishing method for blade edge plate and blade transitional arc part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110163279 CN102248467B (en) | 2011-06-16 | 2011-06-16 | Numerical control polishing method for blade edge plate and blade transitional arc part |
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| CN102248467B true CN102248467B (en) | 2013-05-01 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626901B (en) * | 2012-04-23 | 2013-12-25 | 西北工业大学 | Numerical control machining method for ball polishing wheel |
| CN103894905B (en) * | 2014-04-01 | 2016-04-20 | 西北工业大学 | Blade intake and exhaust limit numerical control polishing method |
| CN106625245A (en) * | 2017-02-22 | 2017-05-10 | 中国航发沈阳发动机研究所 | Measurement method for grinding blade tip |
| CN115488734A (en) * | 2022-09-29 | 2022-12-20 | 中国航发动力股份有限公司 | Chamfering machining method for edge plate face of compressor rotor blade |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH074752B2 (en) * | 1987-01-29 | 1995-01-25 | 三菱重工業株式会社 | 6-axis control automatic polishing machine |
| JP2004044497A (en) * | 2002-07-12 | 2004-02-12 | Mitsubishi Heavy Ind Ltd | Method for maintaining turbine moving blade |
| CN101780653B (en) * | 2009-01-21 | 2012-08-22 | 沈阳黎明航空发动机(集团)有限责任公司 | Numerical control grinding method of circular arc groove and circular arc |
| CN101712089B (en) * | 2009-11-18 | 2012-04-18 | 西安工业大学 | Spiral fluted tap and method for processing same |
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Inventor after: Shi Kaining Inventor after: Lin Xiaojun Inventor after: Shi Yaoyao Inventor after: Zhang Junfeng Inventor after: Duan Jihao Inventor after: Ren Junxue Inventor after: Li Xiaobiao Inventor after: Yang Kuo Inventor after: Dong Ting Inventor before: Lin Xiaojun Inventor before: Shi Yaoyao Inventor before: Zhang Junfeng Inventor before: Duan Jihao Inventor before: Ren Junxue Inventor before: Li Xiaobiao Inventor before: Yang Kuo Inventor before: Dong Ting |
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Granted publication date: 20130501 Termination date: 20200616 |