JPS59192881A - Manufacture of scroll for scroll compressor - Google Patents

Abstract

PURPOSE:To form highly accurate scroll by a method wherein a lap is inserted into a mirror plate having the groove of drill hole, whose size is slightly wider than the lap width of the scroll, subsequently, a scroll lap is formed by sizing. CONSTITUTION:The flat parts of upper and lower mirror plate members 3B1, 3B2 are provided with the scroll-type grooves of drill holes having widths wider than the width of a scroll-type belt member 2A and the belt member 2A is inserted thereinto. Both of the members are jointed by caulking and, thereafter, the lap is formed by sizing, whereby high accuracy of the size may be obtained. Thereafter, the jointed parts 7 are sealed closely by electronic beam, brazing or the like to assemble the scroll having air-tightness.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a method of manufacturing a spiral scroll system with four scroll compressions.

[Prior art]

The external shape of the scroll 1 is shown in FIG. 1, and its longitudinal section is shown in FIG. 2. The scroll 1 is composed of a spiral strip portion 2, a mirror plate portion 3, and a boss portion 4. The end plate portion 3 is provided with an oil container 5 for supplying lubricating oil. One possible method for manufacturing such a scroll 1 as an integral piece as shown in Figs. 1 and 2 is to process a cast material by cutting, but the cast material has poor dimensional accuracy, so it has a spiral shape. It takes a long time to cut the strip part and oil filler, resulting in poor work efficiency.

For these reasons, the scroll is divided into two spiral strip members shown in Fig. 3 and a grooved end plate member 3A having spiral grooves with good dimensional accuracy on the surface of the end plate, each of which is machined separately and grooves formed. It has been proposed that two spiral strip members are inserted into the spiral groove of the end plate member 3A and fixed by screwing, brazing, caulking, diffusion bonding, etc., and integrated. Also in the method of
In the spiral groove and oil-filled machining, dimensional accuracy and narrow deep hole machining are required, and the machining process takes a long time and has the disadvantage of poor work efficiency.

[Purpose of the invention]

In view of the above points, an object of the present invention is to provide a method for manufacturing a scroll member by joining several divided members. A method in which the structure is divided into several parts, one of the divided members, a spiral band plate member, is inserted into an upper and lower head plate having a spiral slotted hole slightly larger than the spiral band plate member, and both are caulked. According to
Perform the joining. Then, at 161, sizing processing is performed using a restraint jig having the same shape as the spiral strip member to ensure the dimensional viscosity of the spiral strip member. The joint is then sealed by electronic heat welding, brazing welding, or the like. This will be explained using figures. FIG. 4 is a perspective view of a scroll divided into various parts for carrying out the present invention. Figures 5 and 6
10 shows the spiral strip member 2A shown in FIG. 4.
and upper end plate member 3B1.3C1, lower end plate member 3B2.
FIG. 3 is a perspective view for assembling 3C2. Figures 7, 8, 9, 11, and 12 are partial views of the caulked joint. In each figure, 3B+, 3C1, and 3B+, 3C1, and 3C are upper end plate members with spiral-shaped drill slots, 3B2, and 3C2 are lower end plate members with spiral-shaped drill holes, and 4A is an SZ member.

First, one embodiment will be described. Upper and lower end plate member 3
A spiral slotted hole having a width slightly larger than the width of the two spiral strip members is provided in the plane portion of Bl and 3B2, and the spiral strip member 2A is inserted into the hole. Caulking and joining in any of the shapes shown in FIG. 7, FIG. 8, and FIG. 9 is performed by applying force from the direction of arrow P, and at the same time, sizing is performed using a restraint jig having the opposite shape to the shape of the spiral strip member 2A. and obtain high dimensional accuracy and force/mechanical joints. This embodiment is characterized in that the joint portion 7 is then sealed by electron beam or brazing bath welding to assemble an airtight scroll.

Another embodiment will be described using FIG. 10. A spiral strip member 2 is installed on the flat surface of the upper and lower end plate members 3C+ and 3C2.
A spiral slotted hole with the same shape as a human being is provided. At this time, grooves 8a and 8b are provided in the central part of the slotted hole as shown in FIG. The uneven positions of the upper and lower mirror plate members 3CI and 3C2 are staggered. Two spiral strip members are inserted into this.

Then, as shown in FIGS. 11 and 12, force is applied from the direction of arrow P to perform caulking and joining. At this time, the caulking joint portion 7 is caulked at different angles in the upper and lower portions and is joined. At the same time, sizing is performed using two spiral strip members and an anti-isomorphic restraint jig to obtain high dimensional accuracy and caulking joints. This embodiment is characterized in that the joint 7 is then sealed by electron beam brazing or the like to assemble an airtight scroll. The above explanation is the spiral strip member 2 by plastic working.
A and upper and lower end plate members 3B+, 3 having spiral cut slots
These are two embodiments of the present invention in scroll assembly related to B2.3CI and 3C2 joining and accuracy improvement.

〔Effect of the invention〕

As explained in detail above, the present invention is divided into individual parts, and the upper and lower head plate members are provided with spiral cut slots, spiral band plate members are inserted, and the parts are joined by a precise caulking method. At the same time, sizing is performed using a spiral restraint jig, and the joints are then sealed using electron beam or brazing welding, resulting in a scroll material with excellent dimensional accuracy and airtightness, reducing cutting man-hours. As a result, an excellent effect on productivity can be expected.

[Brief explanation of the drawing]

Figure 1 is an external view of a scroll for a scroll compressor, Figure 2
The figure is a vertical sectional view of FIG. 1, FIG. 3 is a diagram showing the configuration of a conventional product, FIG. 4 is a perspective view showing the configuration of the present invention, and FIGS. 5 and 6 are of an embodiment of the present invention. Figures showing the configuration; Figure 10 is a diagram showing the configuration of another embodiment; Figures 7, 8, 9, and 11;
12 are partial views showing caulking joints. 1... Scroll for scroll compressor 2... Spiral band plate part 3... End plate part 4... Boss part 5...
・Oil hole 6... Blind screw 2 people... Spiral band member 3A... Grooved end plate member 3B1... Upper end plate member with spiral drilled slot 3B2... With spiral drilled slot Lower end plate member 4A...Boss member 3C1...Upper end plate member with spiral shaped unevenness and drilled slot 3C2...Upper end plate member with spiral shaped unevenness and drilled slot P...Pressure direction
7°°° Joint welding point Im Hayabusa 5m (CA) □ (b)'1 Ia 4-group (a) '' ↓ (b) * I ↓ ↓ CC> , (d)

Claims (1)

[Claims] In a production method in which the scroll member is divided into a wrap part and an end plate part, each of which is manufactured separately and then assembled and joined together, the end plate has a spiral cut groove that is slightly larger than the wrap width of the scroll manufactured by plastic working. A scroll manufacturing method for a scroll compressor characterized by inserting a scroll wrap, then caulking the end plate and the scroll wrap, and then sizing the scroll wrap to ensure high dimensional accuracy and bonding at the same time.