CN105290473A - Machining method for offset milling of conical outer surface of casing - Google Patents
Machining method for offset milling of conical outer surface of casing Download PDFInfo
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- CN105290473A CN105290473A CN201510819485.1A CN201510819485A CN105290473A CN 105290473 A CN105290473 A CN 105290473A CN 201510819485 A CN201510819485 A CN 201510819485A CN 105290473 A CN105290473 A CN 105290473A
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- tapered outer
- conical outer
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Abstract
The invention relates to a machining method for offset milling of the conical outer surface of a casing. The method comprises the following steps that UG software is used for compiling milling operation of the conical outer surface of the casing; the milling sequence and the tool path of the conical outer surface of the casing are planned; a special post processing program of the UG software is customized; the special post processing program is used for creating a G code program recognized by a machine tool; the milling sequence and the tool path of the conical outer surface of the casing are planned as follows: the conical outer surface of the casing is divided into multiple curved face areas, each curved face area serves as an independent drive body, each curved face area is shown with (U,V) parameters, the feed point selects the middle position of each curved face area, and the included angle theta between the feed direction and the cutting direction is greater than 90 degrees but smaller than 270 degrees. The cutting angle of a tool is improved, the cutting range of a side edge is enlarged, cutting of a bottom edge is reduced, and therefore abrasion of the tool is reduced, the machining efficiency is improved, and the numerical control milling problem of the conical outer surface of the casting is successfully solved.
Description
Technical field
The present invention relates to the process technology of mechanical manufacturing field, the tapered outer surface of a kind of casing is biased the processing method of milling specifically.
Background technology
It is very large that the architectural feature of tapered outer surface occupies ratio in the processing of aero-engine casing part, such as, there is the processing of tapered outer surface structure in the parts such as compressor front housing, rear housing, integral ring-shaped casing, traditional diamond-making technique adopts center cutter line perpendicular to tapered outer surface, then rotating part processing or cutter is adopted to rotate processing around Central of the parts line, in the process of the method, process tool uses shear blade and side edge contact part simultaneously, cause tool wear serious, cutting parameter is not high, and working (machining) efficiency is low.
Summary of the invention
For NC Milling difficult problems such as in prior art, casing wimblelike type outer surface structure Milling Machining efficiency are low, tool wear is serious, the technical problem to be solved in the present invention is to provide one can improve cutter serviceability, cutter path of making rational planning for road warp, thus the tapered outer surface of casing improving part working (machining) efficiency is biased the processing method of milling.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
The tapered outer surface of a kind of casing of the present invention is biased the processing method of milling, comprises the following steps:
Step 1, uses UG software, carries out the tapered outer surface Milling Machining operation of establishment casing;
Step 2, the Milling Machining order of the tapered outer surface of planning casing and cutter path;
Step 3, the special post processing program of customization UG software;
Step 4, uses special post processing program, creates the G code program of lathe identification.
The Milling Machining order of the tapered outer surface of described planning casing and cutter path are:
Tapered for casing outer surface is divided into some curved surface areas, and each curved surface area is separately as driving body, and each curved surface area is by (U, V) Parametric Representation;
The centre position of the single curved surface area of feed point selection, direction of feed and cutting direction angulation θ are greater than 90 °, are less than 270 °;
For the curved surface area of multitool road processing, cutting direction arranges unidirectional processing, according to chipping allowance, and setting layering processing;
The special post processing program of described customization UG software is:
Select the two turntable machining center of five axles, XYZ linear axis, AB worktable rotary axle;
Configure by the post processing program of this Device-General;
Under Program/ToolPath/Motion, the biased center cutter line order of self-control process is added to Linear-moving and quick mobile module, preserve post processing program.
The present invention has following beneficial effect and advantage:
1. the present invention is directed to the NC Milling of the tapered outer surface of casing, consider cutting tool state reasonability, adopt biased center cutter line to tapered outer surface normal distance, improve Tool in Cutting angle, increase side edge and cut scope, reduce shear blade and cut, thus reduce tool wear, improve working (machining) efficiency, successfully solve a NC Milling difficult problem for the tapered outer surface of casing.
2. the inventive method is applied in the outer surface Milling Machining of the part such as forward and backward casing, booster stage stator casing, and onsite application effect is very good, cuts stable, raises the efficiency more than 30%.
3. along with the application of this technology on aero-engine casing part, the determined processing method of the inventive method has directive significance, for the quickening Development Schedule of novel aero-engine is had laid a good foundation with reduction development cost, from another perspective, put forward effect for aero-engine from now on and fall this, be applied to production in enormous quantities, the value of creation is larger.
Accompanying drawing explanation
Fig. 1 uses the tool position that in the inventive method, special post processing program generates;
Fig. 2 is tool-path planning schematic diagram in the inventive method;
Fig. 3 is that in the inventive method, UG operating parameter arranges schematic diagram;
Fig. 4 is the schematic diagram of multitool road processing in the inventive method;
Fig. 5 is general postprocessing program in the inventive method;
Fig. 6 A is the interface diagram working out biased center cutter order in special postpositive disposal in the inventive method;
Fig. 6 B is that in the inventive method, in special postpositive disposal, biased center cutter command interface illustrates;
Fig. 7 is the tool position that existing process technology generates.
Wherein, 1 is casing, and 2 is cutter, and 3 is shear blade, and 4 is side edge, and 5 is acting surface, and 6 is the tapered outer surface of casing,
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is further elaborated.
The processing method that the tapered outer surface of casing of the present invention is biased milling comprises the following steps:
Step 1, uses UG software, carries out the tapered outer surface Milling Machining operation of establishment casing;
Step 2, the Milling Machining order of the tapered outer surface of planning casing and cutter path;
Step 3, the special post processing program of customization UG software;
Step 4, uses special post processing program, creates the G code program of lathe identification.
In step 1, casing tapered outer surface Milling Machining cutter rail set up by application UG software, and generate variable profile milling operation, major parameter is set to: driving method selects curved surface, projection vector to select cutter shaft, cutter shaft rotational vertical in driving body, all the other default parameters, design parameter is arranged as shown in Figure 3.
In step 2, tapered for casing outer surface is divided into some curved surface areas, each curved surface area is separately as driving body, and each curved surface area is by (U, V) Parametric Representation, the centre position of the single curved surface area of feed point selection, i.e. (a, 50%), a is longitudinal step-length, direction of feed and cutting direction angulation θ ensure to be less than between 270 ° being greater than 90 ° simultaneously, as shown in Figure 2;
For the curved surface area of multitool road processing, cutting direction arranges unidirectional processing, according to chipping allowance, and setting layering processing, as shown in Figure 4.
In step 3, the special postpositive disposal of customization UG, select the two turntable machining center of five axles, XYZ linear axis, AB worktable rotary axle, first configures by the post processing program of this Device-General, as shown in Figure 5; Under Program/ToolPath/Motion, add the biased center cutter line order of self-control process to Linear-moving and quick mobile module, processing procedure is as follows:
If current kinetic type motion is feed,
If the value of previous some position X-axis is less than 0, by current point position X value=X value-tool diameter/2, current point position; If the value of previous some position X-axis is greater than 0, current point position X value=X value+tool diameter/2, current point position;
Export " G1XYZ ";
Suppress X, Y, Z, the 4th axle;
Force output the 5th axle;
If current kinetic type, for cutting or first time cutting, suppresses X, Y, Z, the 4th axle;
If current kinetic type is withdrawing or leaves, suppress X, Y, force and export Z, G1;
If current kinetic type is stepping, suppress X, Z, the 4th axle;
If current kinetic type is fast, leave module;
Specifically as shown in Fig. 6 A, 6B, preserve post processing program.
In step 4, use the tool position that special post processing program generates, as shown in Figure 1, generate the G code program of lathe identification.Use the tool position that existing process technology generates, as shown in Figure 7.
The present invention, by being biased the distance of center cutter line and tapered outer surface drive point, realizing cutter and uses side edge machined part, improve cutter serviceability, cutter path of making rational planning for road warp, thus improve part working (machining) efficiency.
The present invention is on traditional CNC milling cutter basis, by the displacement of tangential direction upper offset Tool in Cutting in processing, special postpositive disposal is used to generate numerical control program, make rational planning for and change the path of rear cutter, successfully solve the inefficient NC Milling difficult problem of casing outer cone Surface Machining, thus improve tool sharpening durability.
Claims (4)
1. the tapered outer surface of casing is biased a processing method for milling, it is characterized in that comprising the following steps:
Step 1, uses UG software, carries out the tapered outer surface Milling Machining operation of establishment casing;
Step 2, the Milling Machining order of the tapered outer surface of planning casing and cutter path;
Step 3, the special post processing program of customization UG software;
Step 4, uses special post processing program, creates the G code program of lathe identification.
2. be biased the processing method of milling by the tapered outer surface of casing according to claim 1, it is characterized in that the Milling Machining order of the tapered outer surface of described planning casing and cutter path are:
Tapered for casing outer surface is divided into some curved surface areas, and each curved surface area is separately as driving body, and each curved surface area is by (U, V) Parametric Representation.
The centre position of the single curved surface area of feed point selection, direction of feed and cutting direction angulation θ are greater than 90 °, are less than 270 °.
3. be biased the processing method of milling by the tapered outer surface of casing according to claim 2, it is characterized in that: for the curved surface area of multitool road processing, cutting direction arranges unidirectional processing, according to chipping allowance, setting layering processing.
4. be biased the processing method of milling by the tapered outer surface of casing according to claim 1, it is characterized in that the special post processing program of described customization UG software is:
Select the two turntable machining center of five axles, XYZ linear axis, AB worktable rotary axle;
Configure by the post processing program of this Device-General;
Under Program/ToolPath/Motion, the biased center cutter line order of self-control process is added to Linear-moving and quick mobile module, preserve post processing program.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510819485.1A CN105290473B (en) | 2015-11-22 | 2015-11-22 | A kind of processing method of the tapered outer surface biasing milling of casing |
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| CN201510819485.1A CN105290473B (en) | 2015-11-22 | 2015-11-22 | A kind of processing method of the tapered outer surface biasing milling of casing |
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| CN105290473A true CN105290473A (en) | 2016-02-03 |
| CN105290473B CN105290473B (en) | 2018-01-09 |
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| CN106293867A (en) * | 2016-08-17 | 2017-01-04 | 庆铃汽车（集团）有限公司 | A kind of post processor automatic division method based on UG NX system and system |
Citations (5)
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| CN101767218A (en) * | 2008-12-30 | 2010-07-07 | 沈阳黎明航空发动机(集团)有限责任公司 | Five-axis plunge milling method of aeroengine crankcase |
| CN102085576A (en) * | 2010-12-29 | 2011-06-08 | 沈阳黎明航空发动机(集团)有限责任公司 | Five-axis linkage variable-axis plunge milling numerically controlled processing method for blade part of integral impeller |
| CN103056625A (en) * | 2012-12-29 | 2013-04-24 | 中国人民解放军总参谋部第六十研究所 | Integral impeller 5-axis machining method based on UG NX system platform |
| US20130302103A1 (en) * | 2012-05-11 | 2013-11-14 | Giuliano Sona | Automatic method for milling complex channel-shaped cavities |
| CN104690490A (en) * | 2015-01-28 | 2015-06-10 | 襄阳华中科技大学先进制造工程研究院 | Double main shaft turning-milling combined machining method for aeroengine case |
-
2015
- 2015-11-22 CN CN201510819485.1A patent/CN105290473B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767218A (en) * | 2008-12-30 | 2010-07-07 | 沈阳黎明航空发动机(集团)有限责任公司 | Five-axis plunge milling method of aeroengine crankcase |
| CN102085576A (en) * | 2010-12-29 | 2011-06-08 | 沈阳黎明航空发动机(集团)有限责任公司 | Five-axis linkage variable-axis plunge milling numerically controlled processing method for blade part of integral impeller |
| US20130302103A1 (en) * | 2012-05-11 | 2013-11-14 | Giuliano Sona | Automatic method for milling complex channel-shaped cavities |
| CN103056625A (en) * | 2012-12-29 | 2013-04-24 | 中国人民解放军总参谋部第六十研究所 | Integral impeller 5-axis machining method based on UG NX system platform |
| CN104690490A (en) * | 2015-01-28 | 2015-06-10 | 襄阳华中科技大学先进制造工程研究院 | Double main shaft turning-milling combined machining method for aeroengine case |
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| 俸跃伟等: "偏心车铣技术在航空发动机机匣加工中的应用", 《沈阳航空航天大学学报》 * |
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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 |