JPS60209601A - Manufacture of scroll hydraulic machine - Google Patents

Abstract

PURPOSE:To perform the highly accurate finishing work in the vicinity of spirally protruded part by a method wherein the end surface of each spiral plate in a stationary blade part and a rotary blade part engaging with the stationary blade is finished in excellent plane accuracy, and each end plate abrades respectively opposite engaging end plate. CONSTITUTION:At the manufacture of a scroll hydraulic machine, initially, a stationary blade part 14 is fixed with directing a spiral plate 22 upward on a table 24 which is secured on a base 23. Subsequently, a rotary blade part 12 is secured on the table 24 so that a spiral plate 20 is engaged with a spiral plate 22 of the stationary blade part 14. Then a boss 27 protruded on the back side of an end plate 19 of the rotary blade part 12 is engaged eccentrically with a rotary shaft 28. Thus, at the rotation of the rotary shaft 28, the rotary blade part 12 is turned proportional to an eccentric value. Accordingly, both sides of each contacting spiral plate 20, 22 are lapped, simultaneously, the end plate 19 of the rotary blade part 12 abutted the upper end surface of the spiral plate 22 is lapped.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method of manufacturing a scroll fluid machine used for compressors, expansion machines, etc.

[Technical background of the invention and its problems]

To explain the operating principle of a scroll compressor using Figure 1, if two scrolls, or spiral plates (1) and (2), are arranged at different angles and interlocked with each other, one leakage plate (1) is formed. ) and (2), a limited space (3) is formed extending from the contact portion to the contact portion. now.

One spiral plate (1) is connected to the other spiral plate (2), and the center O of one spiral plate (1) is the circumference 9 of the center O of the other spiral plate (2) with a radius O-0'. When the spiral plate (1) is moved while inhibiting rotation, the volume of the limited space (3) gradually decreases.

From the state shown in Figure 1 (A), the revolution angle of the spiral plate (1) is 90'.
The figure (B) shows 180°, the figure (C) shows 270°, and the figure (D) shows 270°. 3) The volume gradually decreases. At 3600 rotations (A), the rain space was moved to the center.

The same figure (B) is connected to each other and moved further by 90 degrees.

As shown in (C) and (D), the space is narrow,
In the same figure (D), it becomes almost zero. During this time, the outer space that started to open in (B) in the same figure changes from (C) and (D) to (A) in the same figure.
to create a sealed space into which the new fluid is introduced.

Therefore, sealed disc-shaped side plates are provided at both axial ends of this spiral plate (13, (2)), and a discharge hole as shown in (4) in Fig. 1 is provided in the center of one side plate. If this is done, the fluid taken in from the outside in the radial direction will be compressed, and the discharge hole (
4).

By the way, in the past, the spiral plates o), (2+
was obtained by cutting a cast material with an end mill using a numerically controlled (NC) machine tool. However, the machining allowance from the cast material is quite large, usually 1.8 threads, and therefore the production time is long, resulting in low production efficiency. Not only that, tools wear out during cutting, making tool management extremely complicated to maintain a specified machining accuracy.Furthermore, the machining accuracy that can be achieved is not sufficient, and it is difficult to improve the performance of scroll fluid machines. It was a barrier.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing a scroll fluid machine that can perform finishing work in the vicinity of the protruding portion of the spiral plate of the mating end plates that are fitted together with high precision.

[Summary of the invention]

Using the end surfaces of the stator vanes and the spiral plates of the Σ rotor blades that are fitted in the stator blades that have flatness accuracy, polish the mating end plates of the mating parts. It is designed so that it can be finished.

[Embodiments of the invention]

An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 2 shows a scroll fluid machine manufactured by the manufacturing method of this embodiment. This scroll fluid machine consists of a cylindrical container (5), a frame (6) inside the container (5), and a shaft (force) supported coaxially with the container (5). A rotor (8) is encircled in the middle part, and a motor (9) is formed with the rotor (8), which is fixedly installed in the container (5) so as to surround the rotor (8), and a shaft (power is rotated). The stator 00) to be driven and the head (7a) formed at the upper end of the shaft (7) are fitted eccentrically to the Oldham (
The rotor blade part αa is connected to the frame (6) via the Oldham joint ([1), and the rotor blade part αa is vertically installed on the ceiling of the container (5) and fits and slides into the rotor blade part αa to form a plurality of compression spaces ( ■ A stationary vane part (141) with a discharge hole (14a) bored in the center and a stator vane part (141) provided on the side of the container (5) to supply working fluid to the compression space (131). suction tube (1
5) and a compression space (
131 and a discharge pipe (16) for externally discharging the working fluid compressed by the discharge hole (14a) and discharged through the discharge hole (14a). However.

, 9J) Lubricating oil αη is injected into the bottom,
This oil is supplied to the shaft support position via an oil groove (oil groove) carved on the outer circumferential surface of the shaft.

In addition, the rotor blade section (121 includes a disk-shaped end plate d91 and a spiral plate (121) which is integrally provided upright on the upper surface of this end plate ugl and has a spiral shape exerting force from an involute or circular arc curve. 20). Then, the rotor blade part (1
2 is provided so as to perform a revolution movement while preventing rotation by an Oldham joint (II). On the other hand, the stationary blade part (I
4) consists of a disc-shaped end plate (2υ) and a spiral plate (2υ) that is installed upright and integrally on the bottom surface of this end plate (2υ) and has a spiral shape that is more like an involute or an arcuate curve. ing.

/1 In the method for manufacturing a scroll fluid machine with an Iff μ period, first, as shown in FIG.
4) is fixed to the table (goods) placed on the base (c) with the spiral plate (22) side up. This table (
2IO is.

A plurality of spheres (251...) are rotatably attached to the bottom of the table.The side surface of the table (2(A)) is surrounded by an elastic body (20), which acts as a reaction force against external force. The rotating blade section (12) can be moved back to its original position at all times via the first sphere (25).
20) is fitted to the spiral plate (221) of the stationary blade part αa and placed on the table (24).Then, the end plate 1 of the moving blade part
A cylindrical boss (27) protruding from the back of the rotary shaft (19) is eccentrically fitted to the rotating shaft. In addition, a key (plow) is fitted into a key groove (29) provided in the end plate (I9) of the moving blade section 0. This key (30) is attached to the frame (
It is connected to the tip of 3υ. This key (30) is for restraining rotation of the rotor blade section (12) so that only revolution occurs. At this time, the stationary blade part (1·v spiral plate (22
1 is set to be slightly larger than the height I2 of the spiral plate (20) of the rotor blade section (I2). therefore.

A gap exists between the lower end surface of the spiral plate (20) and the end plate 0υ. In other words, the upper end surface of the spiral plate (221 is the end plate I)
L9). At this time, each spiral plate 0 (11, +2
Apply a cling film to the outer surface of 2. Thus, when the rotating shaft (2 barrels) is rotated, the rotor blades (1) perform a rotational movement proportional to the given eccentricity. At the same time as the side surface of the rotor blade l is being lapped, the upper end surface of the spiral plate 4 is in contact with the rotor blade l.
The end plate of 121 is lapped by the weight of the rotor blade (121) acting as lapping pressure.Then, the stator blade part a<
is removed from the table (2), and as shown in FIG.
). Then, in the same way as before, move the stationary blade part (]4
), and then attach this rotor blade tta to the rotating shaft ← mark. At this time, the height of the force of the spiral plate 12 is 1
．． is the height of the spiral plate (a)! The 2nd floor is also set small.

The lower end surface of the spiral plate (20) comes into contact with the end plate (211) of the stationary blade section α.

Next, apply a wrap agent to the outer surface of each spiral plate (201, +22+), rotate the rotation axis (c) once, and remove the rotor blade part (lz
Swirl. Then, each spiral plate +2 that is in contact with each other
0) and i23 are lapped, and at the same time, the end plate (21) with which the lower end surface of the spiral plate (21) is in contact is lapped by the weight of the rotor blade (12>) acting as a lap pressure. Next, the height L2 of the rotor blade (one spiral plate -) is ground to the height J3, and the rotor blade (12+) and stationary blade part α are assembled in the container (5).

In this way, the method for manufacturing the scroll fluid machine of this embodiment uses the end faces of the spiral plate <20 of the rotor blade part α2 and the end face of the spiral plate a2 of the stationary blade part 14), which have high flatness accuracy. The end plate α fault of the mating partner, the spiral plate of 0υ (21, (
Finishing in the vicinity of the 22 protrusion can be performed with high precision. Therefore, the clearance between the rotor blade section a and the stationary blade section (14) can be set accurately, contributing to improved performance of the fluid machine.

In the above embodiment, the heights of the spiral plates (2n and e2) are adjusted by grinding, but they may all be done by lapping.
It may be applied not to the entire surface of a21, but only to the two end faces of the spiral plate (21), or only to the end plate (2υ).

Furthermore, in the above embodiment, after wrapping the end plate 0I7 on the end face of the spiral plate (2), the end plate 0I7 is wrapped on the end face of the spiral plate (2), but the wrapping order is reversed. But that's fine.

〔Effect of the invention〕

The present invention uses the respective end surfaces of the 1st diameter part and the stationary blade part, which have plane accuracy, to perform high-precision finishing near the spiral plate protrusion of the mating end plate of the mating end plate. It can be done with As a result, it is possible to accurately set the clearance between the moving part and the stator vane part, which contributes to improving the performance of the fluid machine.

[Brief explanation of the drawing]

Figures 1 (A), (B), (C), and (D) are diagrams showing the operating principle of a scroll compressor, and Figure 2 is a diagram showing the operating principle of a scroll compressor. The overall configuration of the scroll fluid machine shown in FIG. 3 and FIG. 4 are diagrams for explaining a method of manufacturing a scroll fluid machine according to an embodiment of the present invention. a: rotor blade part, (r, a: stator blade part. (10: end plate (second -), arm: spiral plate (second -) (
21): End plate (1st -), (2: Spiral plate (1st -). Fig. 3

Claims (1)

[Claims] A stator vane section is fixedly provided and includes a flat first end plate and a spiral first spiral plate protruding from the first end plate; a flat second end plate; A movable motor comprising a second spiral winding plate protruding from a second end plate and fitted into the first spiral plate, and driven to revolve around the upper stationary vane portion, -1;
A method for manufacturing a scroll fluid machine comprising: polishing the second end plate on the tip surface of the vortex sounding board of the hood 1, and polishing the second end plate on the tip surface of the second north spiral A method for manufacturing a scroll fluid machine, comprising the step of polishing the first end plate.