JPH01273891A - Manufacture of scroll body - Google Patents

Abstract

PURPOSE:To enable the manufacturing and processing of a scroll body through turning working without doing end mill working, by manufacturing a scroll body with a process of joining plural semicircle cylinder walls of two parts together while shifting them at a fixed pitch. CONSTITUTION:Two parts 3, 3' having plural number of semicircle cylinder walls 8 with different diameters one another arranged concentricly at a fixed pitch and a plate 17 with one end in the axis direction of each semicircle cylinder wall 8 united into one body are prepared. Semicircle cylinder walls 8 and the plate 17 of these two parts are joined together with the respective axis centers of the semicircle cylinder walls 8 being shifted one another at a fixed pitch. In such a way the scroll body is manufactured.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention provides a method for manufacturing a spiral body that integrally has a spiral wall extending in a spiral shape and a bottom plate that closes one axial end of the spiral wall. Regarding. Spiral bodies of this type are used, for example, in scroll compressors.

[Prior Art] The spiral body of a conventional scroll compressor is made by machining using an end mill or the like. others,
It is also conceivable to make a thin roll by extrusion molding, forging, or casting (including die casting).

[Problems to be Solved by the Invention] In any case, if high precision is required, end milling must be performed along the spiral shape. This increases the time required to process the spiral wound body, causing a rise in manufacturing costs.

Therefore, an object of the present invention is to provide a method for manufacturing a spiral-wound body that allows the spiral-wound body to be manufactured or finished by turning without requiring end milling.

[Means for Solving the Problems] According to the present invention, in a method for manufacturing a thinly wound body integrally having a spiral wall extending in a spiral shape and a bottom plate that closes one end in the axial direction of the spiral, a predetermined method is employed. Prepare two parts each having a plurality of semi-cylindrical walls having different diameters arranged concentrically with a pitch, and a plate body which integrally connects one end of the semi-cylindrical walls in the axial direction. There is obtained a method for manufacturing a spiral wound body, characterized in that a semi-cylindrical wall and a plate are butted against each other with the axes of the semi-cylindrical walls being shifted from each other by the predetermined pitch.

[Function] According to this spiral-wound body manufacturing method, a plurality of semi-cylindrical walls of two parts are butted against each other with a predetermined pitch difference between them, and as a result, a spiral wall is formed. At the same time, the plates of the two parts are butted against each other, and the axial direction of the spiral wall -
Form a bottom plate that closes YJ.

[Embodiment] First, a first embodiment of the present invention will be described with reference to FIGS. 1 to 4.

In this first embodiment, as shown in FIG. 1, first, a plurality of cylindrical walls 1 having mutually different diameters are arranged concentrically at a predetermined pitch, and a cylindrical wall 1 is integrally formed at one axial end of these cylindrical walls 1. An anti-component 3 consisting of the joined disk 2 is made. This anti-component 3 is produced by -casting, forging, or turning.
It can be made relatively easily and at low cost. Moreover, since it has a cylindrical shape, it can be easily finished by turning.

Next, this part 3 is divided into two parts along the axis 4.

The individual parts thus divided into two pieces are herein referred to as half-split parts 6.

As shown in FIG. 2, the half-split part 6 includes a plurality of semi-cylindrical walls 8 having mutually different diameters arranged concentrically at a predetermined pitch 7, and a circumferential end surface 12 of these semi-cylindrical walls 8. It has a semicircular plate 11 extending perpendicularly to the virtual plane on the same side of the plane 9 as these semicylindrical walls 8 and integrally connected to one end of the semicylindrical wall 8 in the axial direction.

After the limbs, as shown in FIGS. 3 and 4, the semi-cylindrical wall 8 and the plate body 11 of the two half-split parts 6 are respectively attached to the semi-cylindrical wall 8.
are butted against each other with their axes shifted from each other by a predetermined pitch of 7 along the virtual plane 9, and the two are coupled. As a result, the plurality of semi-cylindrical walls 8 form a spiral wall 16, and at the same time, the two plates 11 are butted against each other to form a bottom plate 17 that closes one axial end of the spiral wall 16.

In this way, a spiral book having a spiral wall 16 extending in a spiral shape and a bottom plate 17 which closes one axial end of the spiral wall 16 at -I4C is obtained. This spiral-wound body does not require end milling during manufacture, so the time required for machining can be reduced and manufacturing costs can be reduced. Furthermore, this spiral body can be used in various scroll type compressors2.
: Needless to say.

A second embodiment of the present invention will be described with reference to FIGS. 5 and 6. This second embodiment shows a case where the casing 21 is also made by integrating the spiral 16.

In this case, first, as shown in FIG. 5, a counter part 3' is prepared, in which the pair of wall parts 22 for making the gauging 21 are also made integrally with the cylindrical wall 1, and this is used as in the first embodiment described above. Similarly, the cylindrical wall 1 is divided in half along the axis, and the predetermined pitch is 7.
Shift the two parts by a certain amount as shown in Figure 6 and join them together. In the anti-component 3′ used here, the paired wall portion 22
It goes without saying that the positions are shifted by a predetermined pitch of 7 minutes.

In addition, in the above, the anti-part 3 or 3' is cut in half to make a half-split part, but a part having the same shape as the half-split part may also be manufactured as a single unit, and in this case, the process of halving is unnecessary. It is.

[Effects of the Invention] As explained above, the present invention provides a method for manufacturing a spiral wound body that allows manufacturing or finishing of the spiral wound body using turning processing without requiring end mill processing. I can do something.

[Brief Description of the Drawings] Fig. 1 is a perspective view of a half part used in the first embodiment of the present invention, Fig. 2 is a plan view of a half-split part in the same embodiment, and Fig. 3 is the same embodiment. FIG. 4 is a perspective view of the same spiral wound body, FIG. 5 is a perspective view of the counter parts used in the second embodiment of the present invention, and FIG. 6 is the same FIG. 2 is a perspective view of a spiral wound body obtained in an example. 3.3'... anti-part, 6... half-split part, 710.
Predetermined pitch, 8... Semi-cylindrical wall, 9... Virtual plane, 1
1-8. Board, 16. ... spiral wrapping, 17... bottom plate,
21... Gauging. Figure 1 i, -4 "V Figure 3 Figure 4 Figure 5 ¥6 Figure

Claims (1)

[Claims] (1). In a method for manufacturing a spiral body that integrally has a spiral wall extending in a spiral shape and a bottom plate that closes one axial end of the spiral wall, a plurality of halves with different diameters are arranged concentrically at a predetermined pitch. Prepare two parts each having a cylindrical wall and a plate body integrally joining one axial end of the semi-cylindrical wall,
A method for manufacturing a spiral-wound body, characterized in that the semi-cylindrical wall and the plate of the two parts are butted against each other with the axes of the semi-cylindrical walls being shifted from each other by the predetermined pitch.