JPS591125A - Method for manufacturing turbine blade - Google Patents

Method for manufacturing turbine blade

Info

Publication number
JPS591125A
JPS591125A JP11058882A JP11058882A JPS591125A JP S591125 A JPS591125 A JP S591125A JP 11058882 A JP11058882 A JP 11058882A JP 11058882 A JP11058882 A JP 11058882A JP S591125 A JPS591125 A JP S591125A
Authority
JP
Japan
Prior art keywords
concave surface
electrode
convex
concave
convex surface
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
JP11058882A
Other languages
Japanese (ja)
Inventor
Kazuichi Hashiramoto
柱本 和一
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP11058882A priority Critical patent/JPS591125A/en
Publication of JPS591125A publication Critical patent/JPS591125A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23HWORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H9/00Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
    • B23H9/10Working turbine blades or nozzles

Abstract

PURPOSE:To reduce the surface roughness of a turbine blade in its manufacturing by spark machining, by fitting a workpiece with a concave and convex electrode to provide the workpiece with a concave and a convex surfaces. CONSTITUTION:After an electrode C is attached to a spark machining machine, a workpiece B is secured on a table. While an electrical current is applied, the table is moved so that discharge is caused as the convex surface 8 of the electrode C is fitted to the concave surface 6 of the workpiece B first. As a result, the concave surface 6 of the workpiece B is processed to a shape along the convex surface 8 of the electrode C and simultaneously finished. After that, similar discharge machining is performed as the concave surface 7 of the electrode C is fitted to the convex surface 5 of the workpiece B, thereby finishing the convex surface 5 as well.

Description

【発明の詳細な説明】 この発明は、発電機等用のタービンの羽根を放電加工を
利用しながら製造するようにした製造法に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a manufacturing method for manufacturing turbine blades for generators and the like using electrical discharge machining.

従来においては、発電機等用のタービンの羽根を製造す
るには、まず鍛造等により大体の形をした素材を作り、
つぎにならい旋盤等により削り出した後、パフかけによ
り仕上ばていた。このパフかけによる仕」:げは手作業
によるものであるため手間がかかつてコストが高くなる
だけでなく、而あらさが良好には仕上がりにくいという
欠点があった。仕上げが悪いと発電効率等に悪影響を内
えるのであるが、面あらさが1−4+−に良好になるま
で仕上けるには、さらに手間がかかつ゛〔さらにコスト
アップの原因となっていた。しかも、パフかけ時には粉
・塵が散乱して健康管理上も&fま1−いととではなか
った。
Conventionally, in order to manufacture turbine blades for generators, etc., the material was first made into a rough shape by forging, etc.
After cutting it using a lathe, etc., it was finished by puffing. This puffing process is done by hand, which not only takes time and increases costs, but also has the disadvantage that it is difficult to achieve a good finish due to its roughness. Poor finishing has a negative impact on power generation efficiency, etc., but it takes more time and effort to finish the surface to a level of 1-4+-, which further increases costs. Moreover, powder and dust were scattered during puffing, which was not a good idea from a health management perspective.

この発明は、はとんど人手を必要とせずに簡単に1−か
も無公害で仕上げることができる上、仕」二けも良好に
なるようにしたタービン羽根の製造法を提供することを
目的とする。
The object of the present invention is to provide a method for manufacturing turbine blades that can be easily finished without requiring any human labor and without any pollution, and also has a good finish. shall be.

以F1 この発明の実施態様を図面を参照しながら説明
する。第1図は、タービンの羽根Aの1例を示す斜視図
であるが、羽根Aの基瑞側に取付部(1)を形成してい
る。取付部(1)は、タービンの本体側−\取付けるだ
めの形状に加重[シている。そして羽根Δの1面はゆる
やかに湾曲する凸+m (2)と1.ていて、他面はゆ
るやかに湾曲する凹面(3)としている。先端には突起
(4)を形成しているが、タービンの本体側への取付時
にはこの突起(4)をかしめることにより取付けるので
ある。この突起(4)を形成せずに溶接により取付ける
こともある。
Hereinafter F1 embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an example of a turbine blade A, in which a mounting portion (1) is formed on the base side of the blade A. The mounting part (1) is loaded with the shape of the mounting hole on the main body side of the turbine. One side of the blade Δ is a gently curved convex +m (2) and 1. The other surface is a gently curved concave surface (3). A protrusion (4) is formed at the tip, and this protrusion (4) is caulked when attaching to the main body of the turbine. Sometimes this protrusion (4) is not formed and it is attached by welding.

第1図に示すような羽根Aは、まず鍛造等1でより1而
に凸面(5)を備え他面に凹面(6)を備えて大体の形
をした素材Bを作った後、そへ程精度を必要と1−ない
取付部(1)や突起(4)の部分を機械加工により削り
出してから、凸面(5)や凹面(6)の+W分を放電加
工により仕上ける。すなわち、捷ず羽根Aの凸面(2)
と雌雄嵌合する形状をした凹面(7)を1面に形成し、
羽根Aの凹面(3)と雌雄嵌合する形状を1−だ凸面(
8)を他面に形成した電極Cを銅等で作って川砂l−で
おく。この電極Cには垂直111]又は水平面とした基
準面(9)も形成している。そして第2図に示すように
、この′111極Cを放電加工機に取付けた後テーブル
上に素4′ABを固定する。素材Bのfヶ置決めは、電
hi cの基準面(9)を利用して行なうのである。そ
して、通電させながらテーブルを移動させまず′市+O
LCの凸面(8)と素材Bの凹面(6)とをJイ(雌嵌
合さぜながら1−かも両面間に微小ギ−\“ノブがある
状態にしながら放電−させていくと、素材Bの凹面(6
)が宙、Theの凸面(8)に沿つンン形状に加工さ′
i1.ながら1.かも同時に表面仕上げもされていく。
The blade A shown in Fig. 1 is first made by forging or the like 1 to make a material B having one convex surface (5) and a concave surface (6) in the general shape. The parts of the attachment part (1) and protrusion (4) that do not require high precision are machined, and then the +W portion of the convex surface (5) and concave surface (6) is finished by electrical discharge machining. In other words, the convex surface (2) of the non-slicing blade A
A concave surface (7) shaped to fit male and female is formed on one surface,
The concave surface (3) of the blade A and the male-female mating shape are 1-degree convex surface (
Electrode C with 8) formed on the other side is made of copper or the like and placed in river sand l-. This electrode C is also formed with a reference plane (9) which is a vertical plane (111) or a horizontal plane. As shown in FIG. 2, after this '111 pole C is attached to an electrical discharge machine, the element 4'AB is fixed on a table. The f positioning of the material B is carried out using the reference surface (9) of the electric hic. Then, move the table while turning on the power and first
When the convex surface (8) of the LC and the concave surface (6) of the material B are fitted together and discharged while a small gear knob is placed between both surfaces, the material Concave surface of B (6
) is processed into a shape along the convex surface (8) of '
i1. While 1. At the same time, the surface was also finished.

電極Cを取り換えたり又は加重り条件を変えたり[7な
がら何回かにわたって同じような加工を繰返していくと
、面あらさが【−たいに良好になっていき、最後には而
あらさが1ミクロン程度にもなって、良O−rな仕上げ
面が得られるのである。つぎに、第3図に示すように、
電極Cの凹面(7)と素材Bの凸面(5)とを雌雄嵌合
させながら、同じようにして放電加工をさせていくと、
凸面(5)の仕上けも完了する。
By replacing the electrode C or changing the loading conditions [7], by repeating the same process several times, the surface roughness becomes very good, and in the end the roughness is 1 micron. Depending on the degree, a finished surface with good O-r can be obtained. Next, as shown in Figure 3,
When the concave surface (7) of the electrode C and the convex surface (5) of the material B are mated together and electrical discharge machining is performed in the same manner,
Finishing of the convex surface (5) is also completed.

以上に示した実施態様においては、1つの電極Cに凹面
(7)と凸面(8)とを形成1〜で、1つの電極Cで素
材Bの凸1面(5)と凹面(6)とを加工するようにし
ているが、凹面(7)を形成した電極Cと凸面(8)を
形成した電極Cとを別別に製作しておいて、それらを別
別に使いながら素材Bの凸面(5)と凹面(6)とをそ
れぞれ加工するようにしてもよい。また、有極C+累月
Bを立てた状態にして加7[するようK L。
In the embodiment shown above, one electrode C is formed with a concave surface (7) and a convex surface (8). However, the electrode C with the concave surface (7) and the electrode C with the convex surface (8) are manufactured separately, and they are used separately to process the convex surface (5) of material B. ) and the concave surface (6) may be processed separately. Also, add 7 [to K L] with polar C + cumulative moon B upright.

たものを不したが、素材Bをテーブル上に寝せた状1す
で固定し、電極Cも寝せた状態で取付けて電極Cを下降
させながら加工するようにしてもよい。
Although this example is not shown above, it is also possible to fix the material B in a lying position on a table, attach the electrode C in the lying state, and process the material while lowering the electrode C.

以上からも明らかなように、この発明に係るターヒン羽
根製造法においては、タービンの羽根Aの凸面(2)や
凹面(3)にそれぞれ雄雌嵌合する形状をした凹面(7
)や凸面(8)を備えた′電極Cをあらかじめ製作して
おいて放電加工機に取付け、鍛造等により1面に凸面(
5)を備え他面に凹面(6)を備えて大体の形にまで仕
上げた素材Bを放電加工機のテーブル上に固定!−1素
材Bの凸面(5)と電+DLcの凹面(7)とを雌雄嵌
合させながら放電加工をして素材Bの凸面(5)を所定
の精度の凸面に1で仕上げ、及び素材Bの凹面(6)と
電極Cの凸面(8)とを雌雄嵌合させながら放電加工を
して素材Bの凹面(6)を所定の精度の凹面Vこまで仕
上げるようにしている。1.またがって、1段造等によ
り大体の杉f/imtで仕上げた素材Bを旋盤等により
削り出す工程を不用とするのでそれだけ製作時間を短縮
させコストをFげることができる。また、パフにより仕
上げる場合は、人手をくってコストがかかり粉1mが散
乱するだけでなく、仕上がりも良好にはならない。什ト
がりが悪いと発市等の効率に悪影響を力えるのであるが
この発明に係る製造法によると什1−げtJ放市加1−
によるのであるから、而あらさのきわめて良IJfな羽
根Aを容易に得ることができる。しかも、人手をほとん
ど心安としないので、それたけコストを低くおさえるこ
とができ、粉塵も飛#l1t−ないので作業者の健康管
理上も有利である。
As is clear from the above, in the Tahin blade manufacturing method according to the present invention, the concave surfaces (7
) and a convex surface (8) are manufactured in advance and attached to the electrical discharge machine, and one surface is made with a convex surface (8) by forging etc.
5) and a concave surface (6) on the other side and finished to the approximate shape, fix it on the table of the electrical discharge machine! -1 Finish the convex surface (5) of material B to a convex surface with a predetermined accuracy in 1 by performing electrical discharge machining while mating the convex surface (5) of material B and the concave surface (7) of EL+DLc, and The concave surface (6) of the material B and the convex surface (8) of the electrode C are mated with each other while electrical discharge machining is performed to finish the concave surface (6) of the material B to a concave surface V with a predetermined precision. 1. Moreover, since the process of cutting the material B, which is finished with approximately the same f/imt of Japanese cedar wood by one-stage construction or the like, using a lathe or the like is not necessary, the production time can be shortened and the cost can be reduced by that much. In addition, when finishing by puffing, not only is it labor intensive and costly, but 1 m of powder is scattered, and the finish is not good. Poor tithing has a negative impact on the efficiency of market release, etc., but according to the manufacturing method of this invention,
Therefore, it is possible to easily obtain a blade A with extremely good IJf. Moreover, since there is hardly any need for manpower, costs can be kept low, and there is no dust, which is advantageous in terms of health management of workers.

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

第1図はタービンの羽根への1例を示す斜視図、第2図
及び第3図はそれぞれこの発明の1実施態様を示す斜視
図である。 (1)・・・取伺部     (2)・・・凸面(3)
・・・凹面      (4)・・・突起(5)・・・
凸面      (6)・・・凹面(7)・・・凹面 
     (8)・・・凸面(9)・・・基準面   
  A・・羽根B・・・素材      C・・電極 特許出願人 柱 本 和 − 第2図 第3図
FIG. 1 is a perspective view showing one example of a blade of a turbine, and FIGS. 2 and 3 are perspective views showing one embodiment of the present invention, respectively. (1)...Interesting part (2)...Convex surface (3)
... Concave surface (4) ... Protrusion (5) ...
Convex surface (6)...Concave surface (7)...Concave surface
(8)...Convex surface (9)...Reference surface
A...Blade B...Material C...Electrode patent applicant Kazu Hashiramoto - Figure 2 Figure 3

Claims (1)

【特許請求の範囲】[Claims] 1、タービンの羽根Aの凸面(2)や凹面(3)にそれ
ぞれ雌雄嵌合する形状をした凹面(7)や凸面(8)を
備えた電極Cをあらかじめ製作[、ておいて放電加工機
に取付け、鍛造等により1面に凸面(5)を備え他面に
凹面(6)を備えて大体の形にまで仕上げた素材Bを放
′市加工機上のテーブルに固定し、素材Bの凸面(5)
と電極Cの凹面(7)とを雌雄嵌合させながら放電加工
をして累月Bの凸面(5)を所定の精度の凸面にまで仕
上げ、及び素材Bの凹面(6)と電極Cの凸面(8)と
を雌雄嵌合させながら放電加工ケして素材Bの凹面(6
)を所定の精度の凹面にまで仕上げることにより、面あ
らさの良好な羽根Aを製雀するようにした、タービン羽
根製造法。
1. Prefabricate an electrode C with a concave surface (7) and a convex surface (8) shaped to fit into the convex surface (2) and concave surface (3) of the turbine blade A, respectively. Material B, which has been finished into the approximate shape by forging or other means with a convex surface (5) on one side and a concave surface (6) on the other, is fixed on a table on a market processing machine. Convex (5)
The concave surface (7) of the material B and the concave surface (7) of the electrode C are mated together by electrical discharge machining to finish the convex surface (5) of the moon B to a convex surface with a predetermined precision, and the concave surface (6) of the material B and the concave surface (7) of the electrode C are finished. The concave surface (6) of material B is formed by electric discharge machining while mating the male and female convex surfaces (8).
) is finished to a concave surface with a predetermined precision to produce a blade A with good surface roughness.
JP11058882A 1982-06-29 1982-06-29 Method for manufacturing turbine blade Pending JPS591125A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11058882A JPS591125A (en) 1982-06-29 1982-06-29 Method for manufacturing turbine blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11058882A JPS591125A (en) 1982-06-29 1982-06-29 Method for manufacturing turbine blade

Publications (1)

Publication Number Publication Date
JPS591125A true JPS591125A (en) 1984-01-06

Family

ID=14539656

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11058882A Pending JPS591125A (en) 1982-06-29 1982-06-29 Method for manufacturing turbine blade

Country Status (1)

Country Link
JP (1) JPS591125A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7107886B2 (en) * 2003-02-04 2006-09-19 Rolls-Royce Plc Production of disc components
WO2011039546A3 (en) * 2009-10-02 2011-05-26 Bladon Jets Holdings Limited Rotary structures
CN110248755A (en) * 2017-02-08 2019-09-17 通用电气公司 Electric machining system and method
US11241749B2 (en) * 2016-11-25 2022-02-08 Mitsubishi Power, Ltd. Electrical discharge machining method and electrical discharge machining device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7107886B2 (en) * 2003-02-04 2006-09-19 Rolls-Royce Plc Production of disc components
WO2011039546A3 (en) * 2009-10-02 2011-05-26 Bladon Jets Holdings Limited Rotary structures
CN102665991A (en) * 2009-10-02 2012-09-12 布拉顿喷气机控股有限公司 Rotary structures
US11241749B2 (en) * 2016-11-25 2022-02-08 Mitsubishi Power, Ltd. Electrical discharge machining method and electrical discharge machining device
CN110248755A (en) * 2017-02-08 2019-09-17 通用电气公司 Electric machining system and method
CN110248755B (en) * 2017-02-08 2021-04-23 通用电气公司 Electro-machining system and method

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