CN103056431B - With CNC milling machine, rough machined method is carried out to the sealing surface of honeycomb seals - Google Patents
With CNC milling machine, rough machined method is carried out to the sealing surface of honeycomb seals Download PDFInfo
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- CN103056431B CN103056431B CN201210544835.4A CN201210544835A CN103056431B CN 103056431 B CN103056431 B CN 103056431B CN 201210544835 A CN201210544835 A CN 201210544835A CN 103056431 B CN103056431 B CN 103056431B
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- milling cutter
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Abstract
A kind of CNC milling machine carries out rough machined method to the sealing surface of honeycomb seals, use corn zigzag milling cutter, adopt climb cutting mode, the rotating speed of CNC milling machine main shaft controls at 2200 r/min-2500 r/min, the milling cutter depth of cut controls at 0.15mm-0.2mm, and milling cutter wire velocity control is at 75 m/min ~ 90m/min.
Description
Technical field
The invention belongs to the processing method of honeycomb seal, particularly a kind of sealing surface to honeycomb seals carries out rough machined method.
Background technology
Honeycomb Steam seal is the air current sealed seal generally used, extensive use in engine, gas turbine, steam turbine.Honeycomb is suppressed by foil and is formed, and each cellular component is formed by brazing by honeycomb annular strip and thin-wall annular part, and configurations.Sealing surface about honeycomb seal is processed, and no matter is that roughing or fine finishining all adopt spark erosion machining usually in prior art.Although spark erosion machining can ensure the quality of sealing surface, working (machining) efficiency is very low, especially the processing of grooved honeycomb, and working (machining) efficiency is extremely low, and export license is large.For enhancing productivity, be necessary the new method developing processing honeycomb seal sealing surface.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of sealing surface to honeycomb seals to carry out rough machined method, to enhance productivity, reduce production cost.
CNC milling machine of the present invention carries out rough machined method to the sealing surface of honeycomb seals, use corn zigzag milling cutter, adopt climb cutting mode, the rotating speed of CNC milling machine main shaft controls at 2200r/min-2500 r/min, the milling cutter depth of cut controls at 0.15mm-0.2mm, and milling cutter wire velocity control is at 75 m/min ~ 90m/min.
CNC milling machine of the present invention carries out rough machined method to the sealing surface of honeycomb seals, and described corn zigzag milling cutter is monoblock type alloy milling cutter.
The present invention has following beneficial effect:
1, test shows, for the honeycomb seals that material, structure are all identical, adopting the method for the invention to complete roughing completes compared with roughing with employing spark erosion machining, process time 15 ~ 20 times can be shortened (such as, the honeycomb seals of a Φ 600, use its sealing surface of electric spark roughing to need 6 ~ 8 hours, using the method for the invention to process its sealing surface only needs 30 minutes).
2, because the method for the invention uses corn zigzag milling cutter, adopt climb cutting mode, the cutting stress of the honeycomb seal thus after the method for the invention roughing discharges towards a direction, sealing surface burr is little, be conducive to the flange phenomenon alleviating honeycomb seal face burr, and burr giant is more easily removed.
Accompanying drawing explanation
Fig. 1 is CNC milling machine of the present invention carries out the corn zigzag milling cutter used in rough machined method structural representation to the sealing surface of honeycomb seals;
Fig. 2 is a kind of schematic diagram of honeycomb seals.
Detailed description of the invention
Also carry out rough machined method to CNC milling machine of the present invention to the sealing surface of honeycomb seals by reference to the accompanying drawings below by embodiment to be described further.
The present embodiment carries out roughing to the sealing surface of the honeycomb seals of Φ 600, and the sheet metal forming this honeycomb seals is the anti-corrosion steel foil of MSRR6624/ERH.The milling machine used is conventional CNC milling machine (model: VMC1250), and milling cutter is the corn zigzag Integral alloy milling cutter CBDB1000AXBS K600 (KENNAMETAL company of the U.S. (Kennametal) production) shown in Fig. 1.
Be placed on by processed honeycomb seals on CNC milling machine also fixing, select climb cutting mode, the rotating speed of CNC milling machine main shaft controls at 2300 r/min, and the milling cutter depth of cut controls at 0.15mm, and milling cutter wire velocity control is at 78.5m/min.Namely the roughing of its sealing surface is completed by 30 minutes.Complete the honeycomb seal after processing, its sealing surface burr is little, without flange phenomenon.
Claims (2)
1. one kind is carried out rough machined method with CNC milling machine to the sealing surface of honeycomb seals, the honeycomb annular strip that described honeycomb seals is suppressed by foil and thin-wall annular part are formed by brazing, it is characterized in that using corn zigzag milling cutter, adopt climb cutting mode, the rotating speed of CNC milling machine main shaft controls at 2200r/min-2500r/min, the milling cutter depth of cut controls at 0.15mm-0.2mm, and milling cutter wire velocity control is at 75m/min ~ 90m/min.
2. with CNC milling machine, rough machined method is carried out to the sealing surface of honeycomb seals according to claim 1, it is characterized in that described corn zigzag milling cutter is monoblock type alloy milling cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210544835.4A CN103056431B (en) | 2012-12-17 | 2012-12-17 | With CNC milling machine, rough machined method is carried out to the sealing surface of honeycomb seals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210544835.4A CN103056431B (en) | 2012-12-17 | 2012-12-17 | With CNC milling machine, rough machined method is carried out to the sealing surface of honeycomb seals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103056431A CN103056431A (en) | 2013-04-24 |
| CN103056431B true CN103056431B (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210544835.4A Active CN103056431B (en) | 2012-12-17 | 2012-12-17 | With CNC milling machine, rough machined method is carried out to the sealing surface of honeycomb seals |
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| CN (1) | CN103056431B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397834B (en) * | 2020-04-24 | 2021-06-01 | 中国空气动力研究与发展中心超高速空气动力研究所 | Processing method of large-caliber hypersonic wind tunnel honeycomb device |
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| CN202137435U (en) * | 2011-06-03 | 2012-02-08 | 哈尔滨飞机工业集团有限责任公司 | Cellular milling tool |
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| US3264128A (en) * | 1961-12-13 | 1966-08-02 | Argueso & Co Inc M | Composition for preparing thin-walled cored objects preparatory to performing machining operations thereon |
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Patent Citations (7)
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| US3093370A (en) * | 1957-11-20 | 1963-06-11 | Gen Dynamics Corp | Workholder with means for thermal compensation |
| US3176387A (en) * | 1961-12-13 | 1965-04-06 | Argueso & Co Inc M | Method of machining a thin-walled object |
| EP0064573A1 (en) * | 1981-05-11 | 1982-11-17 | PD - Pries Drucklufttechnik GmbH | Method and device for surfacing light-construction honeycombs |
| CN2544868Y (en) * | 2001-06-01 | 2003-04-16 | 武进市西夏墅工具研究所 | Hard alloy mill cutter |
| CN101200009A (en) * | 2006-12-12 | 2008-06-18 | 上海茂德企业发展有限公司 | Valve tri-eccentric seal surface milling processing special numerical control combination machine |
| CN102179662A (en) * | 2011-04-27 | 2011-09-14 | 沈阳北碳密封有限公司 | Method for processing diamond-shaped hexagonal honeycombs of honeycomb steam seal |
| CN202137435U (en) * | 2011-06-03 | 2012-02-08 | 哈尔滨飞机工业集团有限责任公司 | Cellular milling tool |
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| 刘文 等.硬质合金玉米铣刀.《Mastercam数控加工案例教程》.2011,第31页. * |
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| CN103056431A (en) | 2013-04-24 |
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Address after: Xindu District of Chengdu city in Sichuan province 610503 Shulong avenue into the industrial park into a technology center Patentee after: China Hangfa aviation Polytron Technologies Inc Address before: Xindu District of Chengdu city in Sichuan province 610503 Shulong avenue into the industrial park into a technology center Patentee before: Sichuan Chengfa Aviation Science & Technology Co., Ltd. |