CN101780653B - Numerical control grinding method of circular arc groove and circular arc - Google Patents
Numerical control grinding method of circular arc groove and circular arc Download PDFInfo
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- CN101780653B CN101780653B CN2009100102269A CN200910010226A CN101780653B CN 101780653 B CN101780653 B CN 101780653B CN 2009100102269 A CN2009100102269 A CN 2009100102269A CN 200910010226 A CN200910010226 A CN 200910010226A CN 101780653 B CN101780653 B CN 101780653B
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- circular arc
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- narrow groove
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Abstract
The invention relates to a numerical control grinding method of a circular arc groove and a circular arc, which comprises the following steps: 1. designing a cutting process scheme; 2. designing and calculating a reasonable cutting angle and the size of a grinding wheel; and 3. simulating and analyzing process parameters by UG. The method realizes the processing to a large-diameter circular arc narrow groove and a medium- and small-sized part which is difficult to turn with a common grinding wheel, substitutes large turning equipment, and the processing efficiency is significantly higher than that of turning. The method can be applied to the fields of aeroengine turbine processing and high-temperature alloy material which is difficult to process.
Description
Technical field
The numerical control grinding technology of oversize arc groove and circular arc belongs to the numerical control processing technology field, develops to large aerospace engine turbine parts.This technology is able to use in the development of heavy combustion engine turbo blade, also can be applied to other manufacturing fields, and particularly the high temperature alloy difficult-to-machine material is made the field.
Background technology
In certain type combustion machine 863 project of company research and development, the diameter of turbo blade has reached more than 2 meters, and is maximum above 3 meters; Under the working condition at that time of company, also there is not large-scale lathe can be used for this large-scale blade of development and production, even large-scale lathe has been arranged; Process the blade of this high-temperature material; Its production efficiency is also extremely low, so we begin on mill equipment is delayed in numerical control, to utilize numerical control interpolation technology to carry out development and production.Through rational design technology parameter and process equipment, accomplished the development task of this large-scale blade.Traditional processing method is turning processing, need select lathe for use according to the circular arc size, if arc diameter is oversize, just need selects for use the super large lathe to process, and select seven axes, five linkage axes equipment for use, just can utilize the circular arc of this apparatus processing arbitrary dimension.This equipment and general NC instrument size are more or less the same, and floor space is more half as large than vertical lathe.
Summary of the invention
The purpose of this invention is to provide a kind of numerical control grinding technique to oversize arc groove and circular arc.
The invention provides the numerical control grinding method of a kind of arc groove and circular arc, it is characterized in that: may further comprise the steps: 1 Cutting Process design for scheme; 2 designing and calculating go out rational cutting angle and emery wheel size; 3UG sunykatuib analysis technological parameter.
1 Cutting Process design for scheme
The narrow groove broad ways of any circular arc rationally is divided into first and second two parts processes step by step: the first step: through emery wheel the narrow groove of circular arc first is carried out grinding; Second step: emery wheel is deflected into a side relative with the first step the narrow groove second portion of circular arc is carried out grinding, two steps were processed to form a narrow groove of complete circular arc; Narrow groove as shown in Figure 1 is processed the reasonable separated into two parts of the narrow groove of any circular arc step by step, finally forms complete arc groove, only needs to adopt the first step or the second step processing scheme to get final product for circle in simple or cylindrical processing.The first step is through emery wheel the narrow groove DBE part of circular arc to be carried out grinding like Fig. 2; Second step: emery wheel is deflected into a side relative with the first step such as Fig. 3 partly carries out grinding to the narrow groove another part of circular arc EAC, and two steps were processed to form a narrow groove of complete circular arc.
2 designing and calculating go out rational cutting cuticle and emery wheel size
Geometric sense according to two machining areas calculates machining angle α and grinding wheel radius r.According to the critical condition of processing, can derive machining angle α earlier, grinding wheel radius r and processing arc radius R three's functional relation selects a reasonable set technological parameter to process according to each parameter of equipment again;
The functional relation of described machining angle α and grinding wheel radius r is following:
The functional relation of first step machining angle α and grinding wheel radius r be r≤sin α [(f+d+1)/2-(d-1)
2/ 8f]+(R+d-1) cos α; The functional relation of the second step machining angle α and grinding wheel radius r is r＜Rcos α, and α>=tan
-1[f/ (d/2-0.5)];
Wherein, f is the groove depth of the narrow groove of processed circular arc, and d is the groove width of the narrow groove of processed circular arc.
3UG sunykatuib analysis technological parameter
In UG software, the Several Parameters of top design is carried out modeling and three-dimensional simulation analysis, and revise technological parameter.
Advantage of the present invention: this technology can realize the processing of various difficult turning material parts; And can replace the large car turning equipment; The shared production area of equipment for grinding is merely the half the of large-scale lathe, because of adopting plain wheel, so can reduce the special lathe tool expense; Working (machining) efficiency is apparently higher than turning, and the machining accuracy quality is also apparently higher than turning.
Description of drawings
Fig. 1 is the narrow groove three-dimensional views of circular arc;
Fig. 2 is processing arc groove DBE part floor map;
Fig. 3 is processing arc groove CAE part floor map.
The specific embodiment
Embodiment 1
To narrow groove of each circular arc that will process or simple inside and outside arc size, analytical derivation goes out crucial machined parameters α, grinding wheel radius r and processing arc radius R three's functional relation.Be processed as example with the narrow groove of the circular arc of Fig. 2, its narrow groove representes that with DBAC referring to Fig. 2, radius R is 890mm, CA=f, AB=d, the first step by formula r≤sin α [(f+d+1)/2-(d-1)
2/ 8f]+(R+d-1) cos α calculates one group of grinding wheel radius r and tilt angle alpha value; By figure groove depth 6mm; Groove width 6.5mm calculates, and α gets 5 °, then satisfy processing request minimum grinding wheel radius r should≤892.6mm gets final product; Only part is tilted 5 ° in the reality processing, select the just processing in the narrow groove DBE zone shown in the ability completion figure of emery wheel that satisfies condition for use through turntable.Second step, r＜Rcos α by formula, and α>=tan
-1[f/ (d/2-0.5)] calculates α>=70.2 °, and actual we get 75 °, and can calculate grinding wheel radius and should can accomplish the narrow groove ECA zone processing of Fig. 3 less than 230mm.
Above-mentioned two steps have been processed to form the narrow groove DBAC of complete circular arc.
Claims (2)
1. the numerical control grinding method of arc groove and circular arc is characterized in that: may further comprise the steps
1) Cutting Process design for scheme:
The narrow groove broad ways of any circular arc rationally is divided into first and second two parts processes step by step: the first step: through emery wheel the narrow groove of circular arc first is carried out grinding; Second step: emery wheel is deflected into a side relative with the first step the narrow groove second portion of circular arc is carried out grinding, two steps were processed to form a narrow groove of complete circular arc;
2) designing and calculating goes out rational cutting angle and emery wheel size:
Geometric sense according to two machining areas calculates machining angle α and grinding wheel radius r; F is the groove depth of the narrow groove of processed circular arc, and d is the groove width of the narrow groove of processed circular arc; The functional relation of described machining angle α and grinding wheel radius r is following:
The functional relation of first step machining angle α and grinding wheel radius r be r≤sin α [(f+d+1)/2-(d-1)
2/ 8f]+(R+d-1) cos α; The functional relation of the second step machining angle α and grinding wheel radius r is r＜Rcos α, and α>=tan
-1[f/ (d/2-0.5)];
3) UG sunykatuib analysis technological parameter.
2. according to the numerical control grinding method of said a kind of arc groove of claim 1 and circular arc, it is characterized in that: described two parts are processed step by step for circle in simple or a cylindrical processing needs and are adopted the first step or the second step processing scheme.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100102269A CN101780653B (en) | 2009-01-21 | 2009-01-21 | Numerical control grinding method of circular arc groove and circular arc |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100102269A CN101780653B (en) | 2009-01-21 | 2009-01-21 | Numerical control grinding method of circular arc groove and circular arc |
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| CN101780653A CN101780653A (en) | 2010-07-21 |
| CN101780653B true CN101780653B (en) | 2012-08-22 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248467B (en) * | 2011-06-16 | 2013-05-01 | 西北工业大学 | Numerical control polishing method for blade edge plate and blade transitional arc part |
| CN102862108B (en) * | 2012-09-12 | 2016-07-06 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of method for grinding of skive processing cobalt chromium tungsten coating |
| CN102975100A (en) * | 2012-12-27 | 2013-03-20 | 哈尔滨东安发动机（集团）有限公司 | Grinding method for starwheel oval straight channel |
| CN105479274A (en) * | 2015-11-20 | 2016-04-13 | 沈阳黎明航空发动机(集团)有限责任公司 | Machining method for narrow molded surface of large cantilever thin-wall welding part |
| CN111113208A (en) * | 2019-12-25 | 2020-05-08 | 贵阳航发精密铸造有限公司 | Method for machining radial arc groove of guide blade of complex hollow turbine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1076396A (en) * | 1993-01-18 | 1993-09-22 | 国营三益电子计算机公司 | Method for grinding shallow recessed arc curved surface |
| CN1161897A (en) * | 1996-09-21 | 1997-10-15 | 中山市轴承总厂 | Crush grinding method for elliptic channel of ball bearing |
| JP2003010927A (en) * | 2001-06-26 | 2003-01-15 | Seiko Epson Corp | Method for processing workpiece and workpiece produced by using the same method and method for processing workpiece of split die |
| JP2004068884A (en) * | 2002-08-05 | 2004-03-04 | Toyota Motor Corp | Correcting method of distortion due to thermal treatment of tooth form, and grinding method of the tooth form |
| CN2684999Y (en) * | 2004-01-16 | 2005-03-16 | 贵州西南工具(集团)有限公司 | Blade arc grinding apparatus |
| CN101301732A (en) * | 2007-10-10 | 2008-11-12 | 徐秉绶 | Cut-in type ball bearing channel ultra-lapping technique |
-
2009
- 2009-01-21 CN CN2009100102269A patent/CN101780653B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1076396A (en) * | 1993-01-18 | 1993-09-22 | 国营三益电子计算机公司 | Method for grinding shallow recessed arc curved surface |
| CN1161897A (en) * | 1996-09-21 | 1997-10-15 | 中山市轴承总厂 | Crush grinding method for elliptic channel of ball bearing |
| JP2003010927A (en) * | 2001-06-26 | 2003-01-15 | Seiko Epson Corp | Method for processing workpiece and workpiece produced by using the same method and method for processing workpiece of split die |
| JP2004068884A (en) * | 2002-08-05 | 2004-03-04 | Toyota Motor Corp | Correcting method of distortion due to thermal treatment of tooth form, and grinding method of the tooth form |
| CN2684999Y (en) * | 2004-01-16 | 2005-03-16 | 贵州西南工具(集团)有限公司 | Blade arc grinding apparatus |
| CN101301732A (en) * | 2007-10-10 | 2008-11-12 | 徐秉绶 | Cut-in type ball bearing channel ultra-lapping technique |
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