JPH07269301A - Work method of ceramic turbine rotor - Google Patents

Work method of ceramic turbine rotor

Info

Publication number
JPH07269301A
JPH07269301A JP6089794A JP6089794A JPH07269301A JP H07269301 A JPH07269301 A JP H07269301A JP 6089794 A JP6089794 A JP 6089794A JP 6089794 A JP6089794 A JP 6089794A JP H07269301 A JPH07269301 A JP H07269301A
Authority
JP
Japan
Prior art keywords
turbine rotor
ceramic turbine
ceramic
tooth
outer circumference
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6089794A
Other languages
Japanese (ja)
Inventor
Mitsuru Sumita
満 住田
Masahiro Fujiyama
正博 藤山
Taiji Murata
耐次 村田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NGK Insulators Ltd
Original Assignee
NGK Insulators Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NGK Insulators Ltd filed Critical NGK Insulators Ltd
Priority to JP6089794A priority Critical patent/JPH07269301A/en
Publication of JPH07269301A publication Critical patent/JPH07269301A/en
Pending legal-status Critical Current

Links

Landscapes

  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Supercharger (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

PURPOSE:To disperse fastening force uniformly as a whole, so as to prevent generation of crack on the blade part of a turbine rotor by maintaining a boss part, fitting a slit type ring to the blade part outer circumference of the turbine rotor, and holding the outer circumference of the ring by the tooth part of a holding device. CONSTITUTION:The center part 9 of the boss part 1 side on a ceramic turbine rotor 5 is maintained by a receiving jig 9, and the ceramic turbine rotor 5 is supported and fixed. A slit type ring 11 is fit to the outer circumference of the blade part 3 on the ceramic turbine rotor 5. The blade part 3 of the ceramic turbing rotor 5 is held from the outer circumferential side of the slit type ring 11 by the chuck tooth 7 of a three tooth scroll chuck device which is formed as a holding device. The slit type ring 11 is inserted between the outer circumference of the blade part 3 and the chuck tooth 7, so that fastening force is dispersed into the whole uniformly. It is thus possible to prevent generation of crack on the blade part 3 of the ceramic turbine rotor 5, and also it is possible to prevent partial abrasion on the tooth part 7 and generation of size failure of the rotor 5.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、過給機やガスタービン
エンジンの部品として用いられるセラミックタービンロ
ータをクラックなく加工することができるセラミックタ
ービンロータの加工方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceramic turbine rotor machining method capable of machining a ceramic turbine rotor used as a part of a supercharger or a gas turbine engine without cracks.

【0002】[0002]

【従来の技術】近年、省エネルギーの見地から空気を過
給するか、またはエンジンの作動温度を高くすることに
よってエンジン効率の向上を図ることが研究され実施さ
れている。これらのエンジンに用いられるタービンロー
タは、例えば過給機やガスタービンエンジンの場合、8
00〜1500℃で周速度100m/sec 以上もの高温高
速回転をするため、タービンロータには極めて大きな引
張応力が加わる、そのため高温強度に優れた材料が必要
となる。タービンロータの材料としては、従来Ni、C
o等からなる耐熱金属が用いられてきたが、現状の耐熱
金属では1000℃以上もの高温に長時間耐えることが
困難で、しかも価格も極めて高く、従ってこれらの耐熱
金属に代わる材料としてSi34 、SiC、サイアロ
ン等で代表される高温特性に優れたセラミック材料が使
用されるようになってきた。
2. Description of the Related Art In recent years, from the viewpoint of energy saving, research has been conducted to improve engine efficiency by supercharging air or raising the operating temperature of the engine. Turbine rotors used in these engines are, for example, 8
Since the turbine rotor rotates at a high temperature and high speed of 100 m / sec or more at a temperature of 00 to 1500 ° C., extremely large tensile stress is applied to the turbine rotor. Therefore, a material excellent in high temperature strength is required. Conventional materials for turbine rotors are Ni and C
Although refractory metals such as o have been used, it is difficult for the current refractory metals to withstand temperatures as high as 1000 ° C or longer for a long time, and the price is extremely high. Therefore, Si 3 N 4 can be used as a substitute for these refractory metals. 4 , ceramic materials excellent in high temperature characteristics represented by SiC, sialon, etc. have come to be used.

【0003】セラミックタービンロータは複雑形状であ
るため、通常射出成形又は鋳込成形により成形し、焼成
後加工することにより製造される。ここで、焼成後加工
するに当っては、タービンロータのボス部及び軸部端面
の軸中心線上のセンター穴等を設けてタービンロータを
支持して行ない、各部位の加工が終了すると、軸部側は
金属軸を圧入するため不要となり、切断される。
Since the ceramic turbine rotor has a complicated shape, it is usually manufactured by molding by injection molding or cast molding, and processing after firing. Here, in processing after firing, the boss portion of the turbine rotor and the center hole on the shaft center line of the shaft end face are provided to support the turbine rotor, and when the processing of each portion is completed, the shaft portion is finished. Since the metal shaft is press-fitted on the side, it becomes unnecessary and is cut.

【0004】図3は従来の切断工程を示す概要図で、ボ
ス部1、ハブ部2、翼部3及び軸部4が一体的に形成さ
れたセラミックタービンロータ5に対して、三ッ爪スク
ロールチャック等の把持装置を用いて、セラミックター
ビンロータ5のボス部1側のセンター部9を受け治具6
にて保持しつつ、チャック爪7にて切断部により近い位
置であるセラミックタービンロータ5の円周側のハブ部
2を直接掴んで固定した後、砥石8により軸部4側のセ
ンター部10を切断除去する方式が採用されている。
FIG. 3 is a schematic view showing a conventional cutting process. A three-jaw scroll is provided for a ceramic turbine rotor 5 in which a boss portion 1, a hub portion 2, a blade portion 3 and a shaft portion 4 are integrally formed. Using a gripping device such as a chuck, the jig 6 for receiving the center portion 9 on the boss portion 1 side of the ceramic turbine rotor 5 is received.
While holding by the chuck claws 7, the hub portion 2 on the circumferential side of the ceramic turbine rotor 5 which is closer to the cutting portion is directly gripped and fixed, and then the center portion 10 on the shaft portion 4 side is fixed by the grindstone 8. The method of cutting and removing is adopted.

【0005】[0005]

【発明が解決しようとする課題】しかしながら、上記の
ように、三ッ爪スクロールチャック等の把持装置でセラ
ミックタービンロータ5の円周側のハブ部2を掴む場
合、その把持を確実にするため締付力は60〜70kg/c
m2程度で行なうため、相当な割合でタービンロータ5の
ハブ部2にクラックが入るという問題が発生した。ま
た、切断中にチャック爪7がずれてタービンロータ5が
動き、そのため寸法のバラツキが発生することがあっ
た。さらに、把持装置のチャック爪7が部分的に摩耗す
るため、その修正も必要であった。
However, as described above, when the hub portion 2 on the circumferential side of the ceramic turbine rotor 5 is gripped by a gripping device such as a three-jaw scroll chuck, the tightening is performed to ensure gripping. The applied force is 60 to 70 kg / c
Since the process is performed at about m 2 , a problem occurs that the hub portion 2 of the turbine rotor 5 is cracked at a considerable rate. Further, during cutting, the chuck claws 7 shift and the turbine rotor 5 moves, which may cause variations in dimensions. Further, since the chuck claws 7 of the gripping device are partially worn, it is necessary to correct them.

【0006】従って、本発明は上記した従来の課題を解
決したもので、切断加工に際してもハブ部にクラックが
発生せず、またタービンロータの把持を確実に行なうこ
とができるチャッキング治具とそれを用いたセラミック
タービンロータの加工方法を提供することを目的とす
る。
Therefore, the present invention solves the above-mentioned conventional problems, and a chucking jig and a chucking jig which are capable of reliably gripping a turbine rotor without cracking in the hub during cutting. An object of the present invention is to provide a method for processing a ceramic turbine rotor using the.

【0007】[0007]

【課題を解決するための手段】すなわち、本発明によれ
ば、ボス部、ハブ部、翼部及び軸部が一体的に形成され
たセラミックタービンロータの加工方法であって、把持
装置により少なくともボス部を保持するとともに、セラ
ミックタービンロータの翼部外周に割り型リングを嵌合
し、該リングの外周を把持装置の爪部により把持するこ
とを特徴とするセラミックタービンロータの加工方法、
が提供される。また本発明では、割り型リングと翼部と
のクリアランスは、直径で0.05〜0.3mmであるこ
とが好ましく、また割り型リングの肉厚が1〜6mmで、
さらに割り型リングの割れ部分が0.5〜4mmとした割
り型リングが好ましい。
That is, according to the present invention, there is provided a method for processing a ceramic turbine rotor in which a boss portion, a hub portion, a blade portion, and a shaft portion are integrally formed, and at least a boss is formed by a gripping device. Holding part of the ceramic turbine rotor, a split ring is fitted to the outer circumference of the blade of the ceramic turbine rotor, and the outer circumference of the ring is gripped by the claws of the gripping device.
Will be provided. Further, in the present invention, the clearance between the split mold ring and the blade is preferably 0.05 to 0.3 mm in diameter, and the thickness of the split mold ring is 1 to 6 mm,
Further, a split ring having a cracked portion of the split ring of 0.5 to 4 mm is preferable.

【0008】[0008]

【実施例】以下、本発明を実施例に基づいて更に詳細に
説明するが、本発明はこれらの実施例に限られるもので
はない。図1は本発明による加工方法の一例を示す概要
図である。尚、図中の符号は特記しない限り、図3と同
一である。
The present invention will be described in more detail based on the following examples, but the invention is not intended to be limited to these examples. FIG. 1 is a schematic diagram showing an example of a processing method according to the present invention. The reference numerals in the figure are the same as those in FIG. 3 unless otherwise specified.

【0009】まず本発明では、セラミックタービンロー
タ5のボス部1側のセンター部9を受け治具6にて保持
して、セラミックタービンロータ5を支持固定する。ま
た、ボス部に逆センターを設けている場合は、凸状の逆
センター治具を用いるか、ボス部を直接保持する。次
に、セラミックタービンロータ5の翼部3の外周に、図
2に示すような割り型リング11を嵌合する。次いで、
割り型リング11の外周側から、把持装置である三ッ爪
スクロールチャック装置のチャック爪7にてセラミック
タービンロータ5の翼部3を把持する。
First, in the present invention, the center portion 9 of the ceramic turbine rotor 5 on the boss portion 1 side is held by the receiving jig 6 to support and fix the ceramic turbine rotor 5. When the boss is provided with the reverse center, a convex reverse center jig is used or the boss is directly held. Next, the split ring 11 as shown in FIG. 2 is fitted onto the outer periphery of the blade portion 3 of the ceramic turbine rotor 5. Then
From the outer peripheral side of the split mold ring 11, the blade portion 3 of the ceramic turbine rotor 5 is gripped by the chuck claws 7 of the three-claw scroll chuck device which is a gripping device.

【0010】このように、翼部3の外周とチャック爪7
の間に割り型リング11を挿入することで、200kg/c
m2以下程度の締付力で翼部3の外周から締め付けても締
付力が全体に均一に分散され、翼部3にクラックが生じ
なかった。また、セラミックタービンロータ5が確実に
把持、固定されるため、セラミックタービンロータの寸
法不良も発生しなかった。さらに、チャック爪7の部分
摩耗も生じなかった。
In this way, the outer periphery of the wing portion 3 and the chuck claw 7 are
200 kg / c by inserting split ring 11 between
Even when tightened from the outer periphery of the blade portion 3 with a tightening force of about m 2 or less, the tightening force was evenly distributed over the entire blade portion, and the blade portion 3 was not cracked. Further, since the ceramic turbine rotor 5 is reliably gripped and fixed, the dimensional defects of the ceramic turbine rotor did not occur. Furthermore, partial wear of the chuck claw 7 did not occur.

【0011】ここで、リングとしては割り型リングが翼
部外周全体に均一にトルクを掛けることができるので、
薄肉の翼でも破壊することがないため好ましい。また、
リングの材質としては特に制限されず、金属、プラスチ
ック、セラミック等各種材質のものが使用でき、例えば
金属の場合、S45C等の鋼鉄製や鋳鉄製のものが使用
できる。
Here, as the ring, a split ring can uniformly apply torque to the entire outer circumference of the blade portion,
It is preferable because it does not break even thin wings. Also,
The material of the ring is not particularly limited, and various materials such as metal, plastic and ceramic can be used. For example, in the case of metal, those made of steel such as S45C or cast iron can be used.

【0012】[0012]

【発明の効果】以上説明したように、本発明の加工方法
によれば、セラミックタービンロータのハブ部外周にリ
ングを嵌合し、その外周を把持装置の爪により把持する
ため、締付力が全体に均一に分散されてセラミックター
ビンロータの翼部にクラックが生じず、セラミックター
ビンロータの寸法不良も発生しない。さらに、爪部の部
分摩耗も生じない等の優れた効果を奏するものである。
As described above, according to the processing method of the present invention, the ring is fitted on the outer circumference of the hub portion of the ceramic turbine rotor, and the outer circumference is gripped by the claws of the gripping device. The ceramic turbine rotor is evenly dispersed over the entire surface, cracks do not occur in the blade portion of the ceramic turbine rotor, and dimensional defects of the ceramic turbine rotor do not occur. Further, it has an excellent effect such that partial wear of the claw portion does not occur.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明による加工方法の一例を示す概要図であ
る。
FIG. 1 is a schematic diagram showing an example of a processing method according to the present invention.

【図2】本発明に用いる割り型リングの一例を示す概要
図である。
FIG. 2 is a schematic view showing an example of a split ring used in the present invention.

【図3】従来の加工方法の一例を示す概要図である。FIG. 3 is a schematic diagram showing an example of a conventional processing method.

【符号の説明】[Explanation of symbols]

1 ボス部、2 ハブ部、3 翼部、4 軸部、5 セ
ラミックタービンロータ、6 受け治具、7 チャック
爪、8 砥石、9 センター部、10 センター部、1
1 割り型リング。
1 boss portion, 2 hub portion, 3 blade portion, 4 shaft portion, 5 ceramic turbine rotor, 6 receiving jig, 7 chuck claw, 8 grindstone, 9 center portion, 10 center portion, 1
1 split ring.

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 ボス部、ハブ部、翼部及び軸部が一体的
に形成されたセラミックタービンロータの加工方法であ
って、把持装置により少なくともボス部を保持するとと
もに、セラミックタービンロータの翼部外周に割り型リ
ングを嵌合し、該リングの外周を把持装置の爪部により
把持することを特徴とするセラミックタービンロータの
加工方法。
1. A method of processing a ceramic turbine rotor in which a boss portion, a hub portion, a blade portion, and a shaft portion are integrally formed, wherein at least the boss portion is held by a gripping device and the blade portion of the ceramic turbine rotor is held. A method for processing a ceramic turbine rotor, characterized in that a split ring is fitted to the outer periphery, and the outer periphery of the ring is gripped by a claw portion of a gripping device.
【請求項2】 割り型リングと翼部とのクリアランス
が、直径で0.05〜0.3mmである請求項1記載のセ
ラミックタービンロータの加工方法。
2. The method for machining a ceramic turbine rotor according to claim 1, wherein the clearance between the split ring and the blade is 0.05 to 0.3 mm in diameter.
【請求項3】 割り型リングの肉厚が1〜6mmである請
求項1又は2記載のセラミックタービンロータの加工方
法。
3. The method for processing a ceramic turbine rotor according to claim 1, wherein the split ring has a wall thickness of 1 to 6 mm.
【請求項4】 割り型リングの割れ部分が0.5〜4mm
である請求項1〜3のいずれかに記載のセラミックター
ビンロータの加工方法。
4. The split ring has a cracked portion of 0.5 to 4 mm.
The method for processing a ceramic turbine rotor according to any one of claims 1 to 3.
JP6089794A 1994-03-30 1994-03-30 Work method of ceramic turbine rotor Pending JPH07269301A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6089794A JPH07269301A (en) 1994-03-30 1994-03-30 Work method of ceramic turbine rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6089794A JPH07269301A (en) 1994-03-30 1994-03-30 Work method of ceramic turbine rotor

Publications (1)

Publication Number Publication Date
JPH07269301A true JPH07269301A (en) 1995-10-17

Family

ID=13155614

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6089794A Pending JPH07269301A (en) 1994-03-30 1994-03-30 Work method of ceramic turbine rotor

Country Status (1)

Country Link
JP (1) JPH07269301A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2479215A (en) * 2010-03-30 2011-10-05 Rolls Royce Plc Support frame
CN104191185A (en) * 2014-08-27 2014-12-10 西北工业大学 Machining technology of through-hole-free minitype turbine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2479215A (en) * 2010-03-30 2011-10-05 Rolls Royce Plc Support frame
GB2479215B (en) * 2010-03-30 2012-08-01 Rolls Royce Plc Support frame
CN104191185A (en) * 2014-08-27 2014-12-10 西北工业大学 Machining technology of through-hole-free minitype turbine

Similar Documents

Publication Publication Date Title
US4614453A (en) Metal-ceramic composite body and a method of manufacturing the same
US5061154A (en) Radial turbine rotor with improved saddle life
US4705463A (en) Compressor wheel assembly for turbochargers
US4866829A (en) Method of producing a ceramic rotor
JPS6224603B2 (en)
JPS6185501A (en) Balance adjusting method of ceramics rotor and adjusting jig available thereof
JPS61286501A (en) Turbine rotor and its manufacture
IT8323814A1 (en) METHOD FOR ELIMINATING CRACKS FROM LOW Fatigue CYCLE FOR DISCS WITH INTEGRAL TURBINE ROTOR BLADES
JPH07269301A (en) Work method of ceramic turbine rotor
US4692099A (en) Rotary component of a rotary device for heat engines and a method of manufacturing the same
JPS5893992A (en) Axial-flow rotary device and its manufacturing method
JPH09272021A (en) Manufacture of turbine rotor
JPH0627482B2 (en) Manufacturing method of radial type ceramic turbine rotor
JPWO2006117847A1 (en) Micro gas turbine
JPS5891331A (en) Axial-flow rotary device
JPS6137761Y2 (en)
JPS61123701A (en) Ceramic turbine rotor
CN210189057U (en) Slicing fixture for cutting ultra-thin ductile iron piston ring
CN214945232U (en) Anti-rotation-preventing fan rotor assembly
JPS6073114A (en) Rotary joining body
EP0732481A1 (en) Turbine rotor
JPS5848725B2 (en) Method for manufacturing turbine rotor using ceramic material
JPS607912Y2 (en) Turbine wheel gripping device
JPH0283155A (en) Working method for ceramics rotor
JPH063158Y2 (en) Turbine shaft

Legal Events

Date Code Title Description
A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20020604