JPH0751257Y2 - Press fitting jig for connecting ceramic turbine rotor and metal shaft - Google Patents
Press fitting jig for connecting ceramic turbine rotor and metal shaftInfo
- Publication number
- JPH0751257Y2 JPH0751257Y2 JP1989099026U JP9902689U JPH0751257Y2 JP H0751257 Y2 JPH0751257 Y2 JP H0751257Y2 JP 1989099026 U JP1989099026 U JP 1989099026U JP 9902689 U JP9902689 U JP 9902689U JP H0751257 Y2 JPH0751257 Y2 JP H0751257Y2
- Authority
- JP
- Japan
- Prior art keywords
- turbine rotor
- container
- press
- metal shaft
- ceramic
- 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.)
- Expired - Fee Related
Links
Landscapes
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Ceramic Products (AREA)
- Automatic Assembly (AREA)
Description
【考案の詳細な説明】 (産業上の利用分野) この考案は、セラミック製のタービンロータの凸部を金
属の凹部に圧入する際、すなわち該凹部に対して金属軸
を同軸上に保持した上で金属軸に圧力を付与する作業に
用いるジグに関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to the case where a convex portion of a turbine rotor made of ceramic is press-fitted into a concave portion of metal, that is, a metal shaft is coaxially held with respect to the concave portion. It relates to a jig used for the work of applying pressure to a metal shaft.
(従来の技術) ターボチャージャー用セラミック製ロータは、例えば特
開昭60−50204号公報に記載があるように、焼成したセ
ラミック製のタービンロータの軸部に金属製の回転軸を
圧入する工程を経て製品となるが、該工程には専用のジ
グが不可欠である。(Prior Art) A rotor made of a ceramic for a turbocharger has a process of press-fitting a metal rotating shaft into a shaft portion of a fired ceramic turbine rotor, as described in, for example, JP-A-60-50204. After that, it becomes a product, but a dedicated jig is indispensable for this process.
この種のジグについては特開昭63−139075号公報に開示
があるが、セラミック体と金属体との位置合わせが難し
く、またセラミック体を載置する容器底部の摩耗が激し
いところに問題があった。A jig of this type is disclosed in Japanese Patent Laid-Open No. 63-139075, but there is a problem in that it is difficult to align the ceramic body and the metal body, and the bottom of the container on which the ceramic body is placed is severely worn. It was
さらに減圧下で圧入を行う際に、排気時に金属軸の凹部
とセラミックロータの凸部軸が合わさっていることか
ら、凹部の減圧が短時間でできない問題があった。Further, when performing press-fitting under reduced pressure, since the concave portion of the metal shaft and the convex portion shaft of the ceramic rotor are aligned at the time of exhaust, there is a problem that the pressure of the concave portion cannot be reduced in a short time.
(考案が解決しようとする課題) そこでセラミック製のタービンロータおよび金属軸の位
置合わせが容易かつ確実で、さらには収容容器底部の摩
耗を低減できる圧入ジグを提供することが、この考案の
目的である。(Problems to be solved by the invention) Therefore, it is an object of the invention to provide a press-fitting jig in which the alignment of the ceramic turbine rotor and the metal shaft is easy and reliable, and further, the wear of the bottom of the container is reduced. is there.
(課題を解決するための手段) この考案は、セラミック製のタービンロータ基端に形成
した凸部を金属軸の端面に開口させた凹部に圧入して一
体化する圧入ジグにおいて、上記タービンロータの収容
空間を有する容器と、この容器の開口部を塞ぐ蓋と、上
記金属軸の収容空間を有する案内筒とからなり、容器の
底面にタービンロータと同等またはそれ以上の硬さを有
するセラミック製または金属製の底板を配設し、この底
板にタービンロータ先端の突起をはめ込む位置決め孔を
設け、容器内のタービンロータに対して進退可動とした
案内筒を蓋に取付けてなるセラミック製タービンロータ
と金属軸との結合用圧入ジグである。(Means for Solving the Problem) The present invention relates to a press-fitting jig in which a convex portion formed at a base end of a turbine rotor made of ceramic is press-fitted into a concave portion opened at an end surface of a metal shaft to be integrated with the turbine rotor. A container having a housing space, a lid that closes the opening of the container, and a guide tube having a housing space for the metal shaft, and the bottom surface of the container is made of ceramic having hardness equal to or higher than that of the turbine rotor or A ceramic turbine rotor with a metal bottom plate, a positioning hole into which the projection at the tip of the turbine rotor is fitted, and a guide tube that is movable forward and backward with respect to the turbine rotor in the container are attached to the lid. It is a press-fitting jig for connecting with a shaft.
(作用) タービンロータの先端には、焼成後の研磨仕上げの段階
とこの考案にかかるタービンロータの凸部へ金属軸を圧
入する段階とにおいて便利なように、いわゆる逆センタ
ー加工によって柱状の突起を形成してある。(Operation) At the tip of the turbine rotor, a columnar protrusion is formed by so-called reverse center processing so as to be convenient at the stage of polishing finish after firing and the stage of press-fitting the metal shaft into the convex portion of the turbine rotor according to the present invention. Has been formed.
そして容器においては、この突起を位置決め孔に挿し込
むことでタービンロータを所定位置に配し、一方金属軸
は案内筒にて保持し、後は案内筒にかけた荷重によって
金属軸をタービンロータの凸部へ圧入すれば両者の一体
化を容易にはかることができる。In the container, the protrusion is inserted into the positioning hole to position the turbine rotor at a predetermined position, while the metal shaft is held by the guide cylinder, and thereafter the metal shaft is protruded by the load applied to the guide cylinder. It is possible to easily integrate the two by pressing into the part.
ところで上記圧入の際に応力が最も集中する部位は容器
内底面における位置決め孔の周囲であり、考案者らの実
験によれば、該容器の底面にSKD−61(JIS G4404)を
用いたところ500回の圧入作業で位置決め孔周囲が摩耗
し、圧入時の荷重が均一に加わらなくなってその後の作
業に不都合が生じた。By the way, the site where the stress is most concentrated at the time of press-fitting is around the positioning hole in the bottom surface of the container, and according to experiments by the inventors, when SKD-61 (JIS G4404) was used on the bottom surface of the container, 500 The circumference of the positioning hole was abraded by the repeated press-fitting work, and the load during press-fitting was not evenly applied, resulting in inconvenience in the subsequent work.
そこで容器の底面上に、タービンロータと同等か又はそ
れ以上の硬さをそなえるセラミック製または金属製の底
板を載置し、この底板に位置決め孔を設けることによっ
て、短時間での摩耗を防ぐとともに、損耗状態に応じて
底板の交換が可能な構造とした。ちなみに窒化珪素から
なる底板を用いたところ、1800回以上の圧入作業が可能
であった。Therefore, a ceramic or metal bottom plate having hardness equal to or higher than that of the turbine rotor is placed on the bottom surface of the container, and a positioning hole is provided in this bottom plate to prevent abrasion in a short time. The bottom plate can be replaced according to the worn state. By the way, when a bottom plate made of silicon nitride was used, press-fitting work was possible 1800 times or more.
(実施例) 第1図にこの考案に従う実施例を示す。(Embodiment) FIG. 1 shows an embodiment according to the present invention.
図中1は内部にタービンロータ2を収容する容器、3は
容器1の蓋、4は蓋3に取付けられた、金属軸5を収容
する案内筒であり、案内筒4は容器1内のタービンロー
タ2に対し進退可動になる。In the figure, 1 is a container for accommodating a turbine rotor 2 therein, 3 is a lid of the container 1, 4 is a guide cylinder for accommodating a metal shaft 5 attached to the lid 3, and the guide cylinder 4 is a turbine in the container 1. It can move back and forth with respect to the rotor 2.
容器1の底面上にはセラミックまたは金属からなる底板
6を配置し、この底板6の中心には、タービンロータ2
の突起7を挿入する位置決め孔8を形成してなる。さら
に容器1の側壁には容器1内を減圧雰囲気にするための
排気口9をそなえる。A bottom plate 6 made of ceramic or metal is arranged on the bottom surface of the container 1, and the turbine rotor 2 is placed at the center of the bottom plate 6.
A positioning hole 8 into which the projection 7 of FIG. Further, the side wall of the container 1 is provided with an exhaust port 9 for making the inside of the container 1 a reduced pressure atmosphere.
一方案内筒4は上部に金属軸5を案内筒内に固定する磁
石10をそなえる。なお11は容器1と蓋3および蓋3と案
内筒4間の気密性を確保するOリングである。On the other hand, the guide cylinder 4 is provided with a magnet 10 for fixing the metal shaft 5 in the guide cylinder at the upper part thereof. Reference numeral 11 is an O-ring for ensuring airtightness between the container 1 and the lid 3 and between the lid 3 and the guide tube 4.
上記したジグにてタービンロータ2と金属軸5とを結合
するには、まず底板6をセットした容器1にタービンロ
ータ2の突起7を収容し、底板6の位置決め孔7にター
ビンロータ2をはめ込み、次いでタービンロータ2の凸
部2aに防錆剤を塗布する。一方金属軸5を収容した案内
筒4を蓋3に取付けた後、容器1に蓋3を被せてから、
排気口9から真空ポンプによる排気を行う。次に案内筒
に所定の圧入荷重をかけて金属軸5の凹部5aにタービン
ロータ2の凸部2aを押し込み、両者を結合する。その後
容器1内を大気圧にし内部の結合体を取出す。In order to connect the turbine rotor 2 and the metal shaft 5 with the jig described above, first, the projection 7 of the turbine rotor 2 is housed in the container 1 in which the bottom plate 6 is set, and the turbine rotor 2 is fitted into the positioning hole 7 of the bottom plate 6. Then, a rust preventive agent is applied to the convex portion 2a of the turbine rotor 2. On the other hand, after attaching the guide cylinder 4 accommodating the metal shaft 5 to the lid 3, after covering the container 1 with the lid 3,
Evacuation from the exhaust port 9 is performed by a vacuum pump. Next, a predetermined press-fitting load is applied to the guide cylinder, and the convex portion 2a of the turbine rotor 2 is pushed into the concave portion 5a of the metal shaft 5 to join the two. Then, the inside of the container 1 is brought to atmospheric pressure, and the combined body inside is taken out.
また第2図にこの考案に従う別の実施例を示す。FIG. 2 shows another embodiment according to the present invention.
同図のジグは、容器1内を減圧しない圧入を行うもの
で、さらに金属軸5の径が中間部で変化し段差5bがある
場合に適した案内筒4をそなえる例である。The jig shown in the same figure is for performing press-fitting without depressurizing the inside of the container 1, and is an example in which a guide cylinder 4 suitable for the case where the diameter of the metal shaft 5 changes in the middle part and there is a step 5b is provided.
(考案の効果) この考案では、セラミック製のタービンロータに金属軸
を圧入する作業に有利に適合するジグを提供でき、とく
に底板の介在によって位置決め孔の周囲を常に摩耗や変
形のない良好な状態に保つことができ、タービンロータ
の安定したセット及び圧入個所への圧力の均一付与を達
成し得るとともに、セラミックロータと金属軸の中心位
置を容易に合致できるので、作業性が良い。さらには減
圧下での圧入において、金属軸が案内筒の磁石により持
ち上げられているので、金属軸凹部の排気も均一にで
き、安定した圧入ができる。(Effect of the Invention) According to the present invention, it is possible to provide a jig that is suitable for the work of press-fitting the metal shaft into the ceramic turbine rotor. Since the stable setting of the turbine rotor and the uniform application of pressure to the press-fitting points can be achieved, and the center positions of the ceramic rotor and the metal shaft can be easily matched, workability is improved. Further, in press fitting under reduced pressure, since the metal shaft is lifted by the magnet of the guide cylinder, exhaust of the recess of the metal shaft can be made uniform and stable press fitting can be performed.
第1図および2図はこの考案に従う圧入用ジグの断面図
である。 1……容器、2……タービンロータ 2a……凸部、3……蓋 4……案内筒、5……金属軸 5a……凹部、5b……段差 6……底板、7……突起 8……位置決め孔、9……排気口 10……磁石、11……Oリング1 and 2 are sectional views of a press-fitting jig according to the present invention. 1 ... Container, 2 ... Turbine rotor 2a ... Projection, 3 ... Lid 4 ... Guide tube, 5 ... Metal shaft 5a ... Recess, 5b ... Step 6 ... Bottom plate, 7 ... Projection 8 …… Positioning hole, 9 …… Exhaust port 10 …… Magnet, 11 …… O ring
Claims (3)
した凸部を金属軸の端面に開口させた凹部に圧入して一
体化する圧入ジグにおいて、 上記タービンロータの収容空間を有する容器と、この容
器の開口部を塞ぐ蓋と、上記金属軸の収容空間を有する
案内筒とからなり、容器の底面にタービンロータと同等
またはそれ以上の硬さを有するセラミック製または金属
製の底板を配設し、この底板にタービンロータ先端の突
起をはめ込む位置決め孔を設け、容器内のタービンロー
タに対して進退可動とした案内筒を蓋に取付けてなるセ
ラミック製タービンロータと金属軸との結合用圧入ジ
グ。1. A press-fitting jig in which a convex portion formed on the base end of a turbine rotor made of ceramic is press-fitted into a concave portion opened on an end face of a metal shaft to integrate the container with a housing space for the turbine rotor, A lid for closing the opening of the container, and a guide tube having a space for accommodating the metal shaft, and a bottom plate made of ceramic or metal having hardness equal to or higher than that of the turbine rotor is arranged on the bottom surface of the container. A press-fitting jig for coupling a ceramic turbine rotor and a metal shaft, in which a positioning hole for fitting a projection at the tip of the turbine rotor is provided in the bottom plate, and a guide tube that is movable forward and backward with respect to the turbine rotor in the container is attached to a lid.
なえる請求項1に記載の圧入ジグ。2. The press fitting jig according to claim 1, wherein the guide tube has a magnet for fixing a metal shaft inside.
かつ容器は真空引き用の排気口をそなえる請求項1に記
載の圧入ジグ。3. The press-fitting jig according to claim 1, wherein the lid has an O-ring at the contact portion with the guide tube, and the container has an exhaust port for vacuuming.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1989099026U JPH0751257Y2 (en) | 1989-08-28 | 1989-08-28 | Press fitting jig for connecting ceramic turbine rotor and metal shaft |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1989099026U JPH0751257Y2 (en) | 1989-08-28 | 1989-08-28 | Press fitting jig for connecting ceramic turbine rotor and metal shaft |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0340077U JPH0340077U (en) | 1991-04-17 |
JPH0751257Y2 true JPH0751257Y2 (en) | 1995-11-22 |
Family
ID=31648094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1989099026U Expired - Fee Related JPH0751257Y2 (en) | 1989-08-28 | 1989-08-28 | Press fitting jig for connecting ceramic turbine rotor and metal shaft |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0751257Y2 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5434299Y2 (en) * | 1974-06-11 | 1979-10-20 | ||
JPS63139075A (en) * | 1986-12-02 | 1988-06-10 | 日本碍子株式会社 | Ceramic-metal joined body, manufacture and joining apparatus |
-
1989
- 1989-08-28 JP JP1989099026U patent/JPH0751257Y2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0340077U (en) | 1991-04-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |