IPC분류정보
국가/구분 |
United States(US) Patent
공개
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0047590
(2002-01-15)
|
공개번호 |
US-0098100
(2002-07-25)
|
우선권정보 |
JP-0012512 (2001-01-19) |
발명자
/ 주소 |
- Mori, Tatsushi
- Iguchi, Masao
- Watanabe, Yasushi
- Fujita, Yoshio
- Asou, Shinsuke
- Yoshida, Yoshiharu
|
출원인 / 주소 |
- Kabushiki Kaisha Toyota Jidoshokki
|
대리인 / 주소 |
Woodcock Washburn Kurtz MacKiewicz & Norris LLP
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
0 |
초록
▼
A scroll material160for the production of a scroll is cast, a scroll portion54thereof is left as cast, and the portions other than the scroll portion54are machine-worked. Positioning portions168, 169,and170and an engagement hole172are cast together with the scroll portion54of the scroll material160,
A scroll material160for the production of a scroll is cast, a scroll portion54thereof is left as cast, and the portions other than the scroll portion54are machine-worked. Positioning portions168, 169,and170and an engagement hole172are cast together with the scroll portion54of the scroll material160,etc., in a die-casting process. In a machine working process, an engagement portion248of a holding jaw234is engaged with the engagement hole172of the positioning portion168and at the same time the positioning portions168, 169,and170are held with the holding jaws234, 236and238of a chuck230.In this state, the outer side surface of the base162opposite to the scroll portion54,etc., are cutting-worked with work tools. Using the positioning portions168, 169,and170as the work basis is almost equal to using the scroll portion54as the work basis, and a movable scroll, having a high relative positioning accuracy between the scroll portion54and other portions, can be manufactured.
대표청구항
▼
1. A method of manufacturing a scroll for a scroll-type compressor, comprising:a die-casting process wherein a production scroll material, having a base and a scroll portion erected thereon, having such a shape that the thickness of the scroll portion gradually decreases in the direction from the pr
1. A method of manufacturing a scroll for a scroll-type compressor, comprising:a die-casting process wherein a production scroll material, having a base and a scroll portion erected thereon, having such a shape that the thickness of the scroll portion gradually decreases in the direction from the proximal end of the base side thereof to the front end thereof, is cast using a production metal mold that opens in the direction of thickness of the base, and wherein the production metal mold comprisesa production first mold having a cavity of a shape that corresponds to at least the entire scroll portion, and a production second mold having a cavity of a shape that corresponds to at least a part of the base; and a machine working process wherein a scroll, as a product, can be obtained by machine-working the base of the production scroll material, which is cast in the die-casting process, and by at least the outer side surface and the inner side surface of the scroll portion of the production scroll material being left as cast. 2. A method of manufacturing a scroll for a scroll-type compressor, as set forth in claim 1, wherein the machine working process includes a process in which the base is machine-worked with the work basis of at least either the outer side surface or the inner side surface of the scroll portion left as cast. 3. A method of manufacturing a scroll for a scroll-type compressor, as set forth in claim 1, further comprising:a trial die casting process that casts a trial scroll material using a trial metal mold equipped with a trial first mold having the same cavity as or a similar one to that of the production first mold; a measuring process including, measuring first dimensions of at least the outer side surface and the inner side surface of the scroll portion of the trial scroll material, compari ng the first dimensions with the second dimensions of the corresponding portions of the cavity that has formed the scroll portion of the trial first mold, and obtaining the dimensional difference between the first dimensions and the second dimensions; and a manufacturing process to manufacture the production first mold, to the cavity of which, having a shape corresponding to a scroll portion with the true shape and dimensions, modifications based on the dimensional difference obtained in the measuring process are made; wherein the production first mold is used as a component of the production metal mold of the production scroll material. 4. A method of manufacturing a scroll for a scroll-type compressor, as set forth in claim 1,wherein a positioning portion, which has a relative position specified in advance with respect to the scroll portion, is formed on the base in the die-casting process, and wherein the scroll material is positioned by utilizing the positioning portion and the base is machine-worked in the machine working process. 5. A method of manufacturing a scroll for a scroll-type compressor, as set forth in claim 1, wherein the machine working process includes a process in which the scroll material is fixed by a fixture and the base is machine-worked after the scroll material is positioned with a positioning jig that is physically engaged with at least either the outer side surface or the inner side surface of the scroll portion of the scroll material. 6. A method of manufacturing a scroll for a scroll-type compressor, as set forth in claim 1, wherein the machine working process includes a process in which the base is machine-worked in the state in which at least either the outer side surface or the inner side surface of the scroll portion of the scroll material is held with a chuck. 7. A scroll f or a scroll-type compressor, comprising a base and a scroll portion erected thereon,wherein the scroll portion has such a shape that the thickness of the scroll portion gradually decreases in the direction from the proximal end of the base side thereof to the front end thereof, and at least the outer side surface and the inner side surface of the scroll portion are left as cast. 8. A scroll for a scroll-type compressor, as set forth in claim 7, wherein a rounded portion is formed at the border between the scroll portion and the base and at the same time a rounded portion corresponding to the rounded portion is formed on the front end of the scroll portion. 9. A scroll for a scroll-type compressor, as set forth in claim 7, wherein the scroll is a movable scroll, the self rotation of which is prevented by a self-rotation preventing mechanism and which is revolved by a revolving mechanism, and wherein an engagement portion engaged with at least either the self-rotation preventing mechanism or the revolving mechanism is machine-worked on the movable scroll. 10. A scroll-type compressor, comprising a fixed scroll and a movable scroll having a base and a scroll portion erected thereon,wherein the scroll portion has such a shape that the thickness thereof gradually decreases in the direction from the proximal end of the base side thereof to the front end thereof, the fixed scroll and the movable scroll, at least the outer side surface and the inner side surface of the scroll portion of which are left as cast, are contained in a main body, being engaged with each other, the relative movement of the fixed scroll with respect to the main body is disabled, and a mechanism, which revolves the movable scroll while preventing the self-rotation of the movable scroll, is arranged between the movable scroll and the main body.
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