JP3379792B2 - Manufacturing method of scroll fluid machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a scroll fluid machine, for example, for a scroll compressor used in an air conditioner, etc. The present invention relates to a method for manufacturing a scroll fluid machine, in which a seal portion capable of achieving the above is formed.

[0002]

2. Description of the Related Art A conventional structure of a so-called high-pressure container type scroll compressor for storing discharge gas in a hermetically sealed case is known, for example, as described in JP-A-1-187388. Here, the pump part (compression mechanism part) is enlarged and shown in FIG. FIG. 6 is a vertical sectional view showing a pump portion of a conventional scroll compressor. In FIG. 6, 11 is a fixed scroll, 11a is a wrap, 11b is a top plate, 11c is a mirror plate, 11d is a suction port, 11e is a discharge port, 12 is an orbiting scroll, 12a is a wrap, 12b is a mirror plate, 12c is a bearing, 12d. Is a key groove, 12e is an outer peripheral projection of the end plate, 13 is a frame, 13a is a bearing,
13b is a keyway, 13c is a pedestal surface, 13d is an end surface, 14
Is an Oldham ring, 14a is a protrusion, 15 is a crankshaft, 15a is an eccentric part, 16 is a bolt, and 17 is a sealed case.

A crankshaft 15 is fitted in a bearing portion 13a of the frame 13. The eccentric portion 15a of the clan shaft 15 and the orbiting scroll 12 are assembled by fitting the outer diameter of the eccentric portion 15a to the inner diameter of the bearing 12c formed on the opposite lap side. Frame 1
3 and the orbiting scroll 12 between the Oldham ring 1
4 inserts the protrusions 14a vertically arranged on the hollow disk into the respective key grooves 12d and 13b, and assembles them so that the rotational movement of the crankshaft 15 is connected to the orbiting movement of the orbiting scroll 12. Has been.

Further, the fixed scroll 11 is arranged such that each of the wraps 11a,
The side surface of 12a, the tip, and the groove bottom are combined in close proximity to each other to form a minute clearance,
The bolts 16 are fastened to the frame 13 to complete the assembly of the pump unit. At this time, at the same time, the outer peripheral protrusion 12e of the end plate 12b of the orbiting scroll 12 is accommodated in the space (gap) formed by the pedestal surface 13c formed on the frame 13 and the end plate 11c of the fixed scroll 11 with an appropriate clearance.

In the scroll compressor thus assembled, the suction port 11 provided in a part of the fixed scroll 11 is driven by the rotational movement of the motor (not shown) provided in the lower part.
Gas is sucked into the pump from d, is sequentially compressed, is guided to the discharge port 11e opened in the central portion of the top plate 11b of the fixed scroll 11, and is discharged into the sealed case 17.

[0006] In such a scroll compressor, the fixed scroll 11 and the orbiting scroll 12 are operated so that the internal gas pressure rises due to the mutual compression of the pumps. Will be separated. Therefore, as a preventive measure, (1) a pressure (hereinafter referred to as an intermediate pressure) in which the internal pressure of the closed case is properly controlled is introduced to the rear surface of the orbiting scroll by an oil supply hole (not shown) communicating from the lower portion of the crankshaft 15. Adopting a structure in which the orbiting scroll 12 is constantly pressed against the end plate 11c of the fixed scroll 11, (2) pedestal surface 13c, end surface 13
The step size between d and the thickness dimension of the end plate outer peripheral projection 12e of the orbiting scroll 12 are reduced to suppress the separation of the orbiting scroll 12.

The performance of such a conventional scroll compressor is such that the sliding contact portion between the fixed scroll 11 and the orbiting scroll 12 leaks, that is, the fixed scroll 1.
End plate 11c of No. 1 and end plate 12b of orbiting scroll 12
It depends on the amount of inflow of gas at an intermediate pressure between the surface and the surface, or the reverse flow rate of compressed gas due to separation of the fixed and orbiting scrolls 11 and 12.

The inflow of the intermediate pressure gas and the reverse flow of the compressed gas which hinder this performance are sandwiched between the space (gap) formed by the pedestal surface 13c of the frame 13 and the end plate 11c of the fixed scroll 11 and this space. Of the clearance formed between the end plate outer peripheral convex portion 12e of the orbiting scroll 12 and the sliding surface of the scroll, that is, the end plate 11c surface of the fixed scroll 11 and the end plate 12b surface of the orbiting scroll 12. It depends on the size of the contact gap.

More specifically, the pedestal surface 13c,
The clearance (clearance) formed by the space between the end plates 11c of the fixed scroll 11 and the thickness of the end plate outer peripheral convex portion 12e of the orbiting scroll 12 is a dimension setting value in consideration of the plane properties (flatness, surface roughness) of related parts. The clearance when the end plate 11c surface of the fixed scroll 11 and the end plate 12b surface of the orbiting scroll 12 are brought into contact with each other is determined by the flatness (flatness, surface roughness) of both parts.

[0010]

In the conventional scroll compressor, the processing accuracy of the portion that affects the gas leakage is poor, and it is impossible to obtain satisfactory performance. That is, since the frame end surface 13d and the pedestal surface 13c are finished by turning, the surface roughness and flatness of the machined surface are poor due to the machining process, and the step dimensional accuracy is rough and it is necessary to have a large machining tolerance.

Further, also in the back surface processing of the end plate outer peripheral convex portion 12e of the orbiting scroll 12, the surface roughness and the flatness of the processed surface are poor due to the turning finish, and the end plate on the side of the lap 12a is used as a processing reference for the end mill processing. Since the thickness accuracy and flatness of 12b include chuck deformation, it was difficult to process with high precision. Therefore, the gap between the frame end surface 13d and the pedestal surface 13c sandwiching the orbiting scroll 12 is substantially increased, and due to the poor flatness of the end plates of both scrolls, both fixed and orbiting end plates 11c,
There is also a problem that a gap is generated between the surfaces 12b, the inflow of the intermediate pressure gas into the pump portion or the backflow of the compressed gas cannot be prevented, and a high-performance scroll compressor cannot be provided.

Furthermore, the end plate 11c of the fixed scroll 11
Conventionally, as for the machining, it has been customary to adopt turning or end milling. Since the surface roughness is poor, the coefficient of sliding friction with the end plate 12b of the orbiting scroll 12 is high,
The driving input increased, which was against energy conservation.

The present invention has been made in order to solve the above-mentioned problems of the prior art, and realizes high precision of each component constituting the pump portion, and the end plate surface sliding portion of the fixed scroll and the orbiting scroll. It is an object of the present invention to provide a method for manufacturing a scroll fluid machine that suppresses gas leakage from the inside and achieves performance improvement of the scroll fluid machine.

[0014]

In order to achieve the above object, the structure of a method for manufacturing a scroll fluid machine according to the present invention is such that a motor and a pump portion connected to the motor are housed in a sealed case. , Each end plate has a spiral wrap, and the fixed scroll and swivel scroll that form the pump chamber by meshing each wrap with the revolution of the swivel scroll by transmitting the rotational force of the motor. And a frame having a bearing for rotating the crankshaft, the outer peripheral portion of the end plate of the orbiting scroll has a convex portion on the back side over the entire circumference, and the orbit having the convex portion In the method for manufacturing a scroll fluid machine, wherein the outer peripheral portion of the scroll is disposed in a gap formed by the outer peripheral portion of the fixed scroll end plate and the pedestal surface of the frame. The roll is subjected to superfinishing polishing on the end plate of the fixed scroll that receives contact sliding of the end plate surface of the orbiting scroll, and the orbiting scroll is subjected to grinding on the back surface of the end plate, and then the back surface is used as a reference. , An end mill is used to precisely process the thickness of the end plate surface and the flatness of the end plate surface, and the frame is ground in association with the end surface of the fixed scroll that is in contact with the pedestal surface. Is a phosphate chemical conversion coating treatment, and these components are combined to enhance the adhesion of the orbiting scroll and the fixed scroll when the end plate surfaces slide.

That is, the performance defect of the conventional scroll fluid machine is to thoroughly improve the accuracy and improve the surface quality of the related parts of the related parts, reduce the gap that affects the inflow or backflow of gas, and reduce the friction coefficient. To reduce
This can be solved by subjecting the orbiting scroll, which slides on both sides between the end plate and the pedestal surface, to the surface treatment that is easy to adapt to the initial sliding due to the collapse of crystals under a light load, and further reduces the gas inflow gap.

[0016]

The function of the above technical means (manufacturing method) is as follows. The end surface of the fixed scroll is ground and subjected to superfinish polishing to improve the surface accuracy to reduce the friction coefficient. The orbiting scroll aims to improve the processing accuracy and the flatness and surface roughness of the back surface of the projection on the outer peripheral edge of the end plate by grinding the end surface, and performs the end surface grinding with reference to the back surface to secure the end plate thickness dimension. Improve the plane accuracy. In addition, the orbiting scroll is subjected to a surface treatment with a relatively thin film thickness that is well-adapted to obtain an actual sliding surface that fits the properties of the end plate surface.

The end surface of the frame and the pedestal surface are ground by the same chucking so as to secure the step size and the parallelism and to improve the surface roughness. The scroll fluid machine according to the present invention, in particular, the scroll compressor, has a combination of components reflecting these elements to reduce the inter-component gap related to the inflow of the intermediate pressure gas into the pump section or the reverse flow of the compressed gas. The performance of the period is obtained.

[0018]

Embodiments of the present invention will be described below with reference to FIGS. 1 is a sectional view showing a method for processing a fixed scroll of a scroll compressor according to an embodiment of the present invention, FIG. 2 is a sectional view showing a method for processing an orbiting scroll of the scroll compressor, and FIG. Sectional drawing which shows the processing method of the frame of a scroll compressor, FIG. 4 is a longitudinal cross-sectional view of the compression mechanism part of the scroll compressor which concerns on one Example of this invention,
FIG. 5 is an enlarged view of a main part of the P section in FIG. Here, it is a main part that constitutes the pump section of the scroll compressor,
An embodiment of each processing method of the fixed scroll, the orbiting scroll, and the frame will be described. The scroll compressor shown in FIG. 4 is the one having the same structure as the scroll compressor shown in FIG.

[Embodiment 1] First, a method of processing a fixed scroll will be described with reference to FIG. FIG. 1 is a cross-sectional view showing a procedure of a method of processing a fixed scroll according to an embodiment of the present invention. In FIG. 1, 1 is a fixed scroll, 1a
Is a spiral wrap formed on the end plate, 1b is a top plate,
1c is a mirror plate, 1d is an inlet, A is an end mill, B is a measuring instrument, C is a grinding wheel, and D is a superfinishing wheel.

The fixed scroll 1 shown in FIG. 1 is in a state of being chucked by a scroll processing machine (not shown). First, as shown in FIG. 1 (a), an end mill A is used to cut an appropriate groove width, The depth is formed to form the wrap 1a. Next, as shown in FIG. 1 (b), the step size between the end plate 1c and the scroll bottom is measured by a measuring instrument B which is always provided on the processing machine. And feed back this measured value,
As shown in FIG. 1C, the end plate 1c is ground with a grinding wheel C so that the desired scroll bottom depth dimension can be secured.

After that, as shown in FIG.
Superfinishing is performed on the grinding surface of c using a superfinishing grindstone D made of an ultrafine abrasive grain bonded body or the like. In this case, an ultra-high hardness grindstone such as a CBN grindstone is used for grinding, surface roughness accuracy is sacrificed to some extent, and machining specifications that emphasize shape accuracy are adopted. Superfinishing is performed for the surface roughness of the grinding surface. By performing light grinding within the range, efficient super finishing machining specifications and machined surfaces can be obtained. The flatness of the end plate 1c is preferably 3 μm or less. Here, in order to maintain the correlation accuracy, it is desirable that the series of processes be completed in the same chuck state.

[Embodiment 2] Next, a method of processing an orbiting scroll will be described with reference to FIG. FIG. 2 is a cross-sectional view showing a method for processing an orbiting scroll of a scroll compressor according to an embodiment of the present invention. In FIG. 2, 2 is an orbiting scroll, 2a is a spiral wrap that stands upright on the mirror plate, 2b is a mirror plate, 2c is a bearing, 2d is a mirror plate outer peripheral convex portion, 2e is a back surface of the mirror plate outer peripheral convex portion,
2 g is a phosphate conversion coating, E is a grinding wheel, and F is an end mill.

As shown in FIG. 2A, in the orbiting scroll 2, the back surface 2e of the projection 2d of the end plate outer peripheral portion is finished by a grinding wheel E before a series of scroll processing. Next, as shown in FIG. 2B, a scroll processing machine (not shown)
While being chucked, the end mill F performs scroll processing by side cutting to form a lap 2a, and further performs thickness and flat processing of the end plate 2b by end surface cutting.

Thereafter, as shown in FIG. 2 (c), with the orbiting scroll 2 removed from the scroll processing machine, a phosphate chemical conversion film surface treatment is performed to form a phosphate chemical conversion film 2g shown by a broken line. To do. Since the end plate surface accuracy of the orbiting scroll 2 is obtained by end milling, the back surface 2e serving as the processing reference surface is ground as shown in FIG. 2 (a), and as shown in FIG. 2 (b), there is little tightening deformation. Even if the retractable chuck method is adopted, the flatness of 5 μm is usually the limit in mass production. The phosphate chemical conversion coating is processed by the function of secondarily assisting the flatness, and the film thickness thereof needs to be 5 μm or more.

[Third Embodiment] Next, a method of processing a frame will be described with reference to FIG. FIG. 3 is a cross-sectional view showing a method for processing a frame of a scroll compressor according to an embodiment of the present invention. In FIG. 3, 3 is a frame, 3a is a bearing for supporting a crankshaft, 3b is a pedestal surface, 3
c is an end face and G is a grinding wheel.

The frame 3 is chucked by an end surface grinder (not shown) after the rough cutting is finished into the desired shape, and the end surface 3c is ground as shown in FIG. 3 (a). Next, in the same chuck state, as shown in FIG.
And the pedestal surface 3b is ground and finished. In this way, by associating processing with the same chuck, the step size between the end surface 3c and the pedestal surface 3b can be reduced to μm in recent NC machines.
It is possible to secure the level with high accuracy.

[Fourth Embodiment] Next, the first, second, and third embodiments will be described.
An example of a scroll compressor assembled by using the respective parts manufactured by the processing method described in 3 will be described with reference to FIGS. 4 and 5. 4 is a vertical cross-sectional view of a compression mechanism portion of a scroll compressor according to an embodiment of the present invention, and FIG. 5 is a phosphate chemical conversion between a fixed scroll of the scroll compressor of FIG. 4 and a sliding surface of an orbiting scroll. It is a principal part enlarged view which shows an example of the familiar state of a film | membrane, and is a P section detail drawing of FIG.

In FIG. 4, 1 is a fixed scroll, 1a
Is a spiral wrap formed on the mirror plate 1c, 1b is a top plate, 1c is a mirror plate, 1d is a suction port, 1e is a discharge port.
Further, 2 is an orbiting scroll, 2a is a spiral wrap standing upright on the mirror plate 2b, 2b is a mirror plate, 2c is a bearing, 2d is a mirror plate outer peripheral convex portion, 2e is a back surface of the mirror plate outer peripheral convex portion,
2f is a keyway and 2g is a phosphate chemical conversion coating. 3 is a frame, 3a is a bearing for supporting the crankshaft 5, 3b is a pedestal surface, 3c is an end surface, 3d is a keyway, 4 is an Oldham ring, 4a is a protrusion, 5 is a crankshaft, 5a is a crankshaft 5. Is an eccentric part, 6 is a bolt for fastening the fixed scroll 1 and the frame 3, and 7 is a closed case.

In the scroll compressor shown in FIG. 4, a motor (not shown) and a pump section (compression mechanism section) connected to the motor are housed in a closed case 7, and each end plate has a spiral shape. A fixed scroll 1 and a swivel scroll 2 each having a wrap and forming a pump chamber by meshing the wraps with each other; and a crankshaft 5 for revolving the swivel scroll 2 by transmitting a rotational force of a motor. The frame 3 having a bearing 3a for supporting the crankshaft 5 is provided as a main part.

More specifically, the clan shaft 5 is fitted in the bearing portion 3a of the frame 3. The eccentric portion 5a of the crankshaft 5 and the orbiting scroll 2
Is assembled by fitting the outer diameter of the eccentric portion 5a to the inner diameter of the bearing 2c formed on the opposite lap side.
Between the frame 3 and the orbiting scroll 2, the Oldham ring 4 inserts the protrusions 4a vertically arranged on the hollow disc in the key grooves 2f and 3d, and the crankshaft 5 rotates. Is assembled so as to be linked to the orbiting movement of the orbiting scroll 2.

Further, the fixed scroll 1 is assembled from the upper part of the orbiting scroll 2 in a state in which the side surfaces, the tips and the groove bottoms of the respective wraps 1a, 2a are closely arranged so as to form a minute gap, and The frame 3 is fastened by 6 to complete the assembly of the pump unit. At this time, at the same time, the outer peripheral projection 2d of the end plate 2b of the orbiting scroll 2 is
Is accommodated with a clearance in a space (gap) formed by the pedestal surface 3b formed on the frame 3 and the surface of the end plate 1c of the fixed scroll 1.

In the scroll compressor of this embodiment which has been assembled as described above, the crankshaft 5 rotates the orbiting scroll 2 by the rotation of the motor (not shown) provided in the lower part, like the conventional scroll compressor. Revolving without rotation, gas is sucked into the pump from a suction port 1d provided in a part of the fixed scroll 1, sequentially compressed, and guided to a discharge port 1e opened in the central portion of the top plate 1b of the fixed scroll 1, Discharge into the closed container 7.

A measure for preventing gas leakage between the fixed and orbiting scrolls 1 and 2 is to control an intermediate pressure appropriately controlled from an oil supply hole (not shown) provided in the central portion of the crankshaft 5 as in the conventional compressor. It is the same to add gas to press the end plate 2b of the orbiting scroll 2 against the end plate 1c of the fixed scroll 1 or to suppress the separation of the end face 2e of the orbiting scroll 2 by the pedestal surface 3b. In particular, by superfinishing the end surface of the fixed scroll 1, it is possible to significantly reduce the surface accuracy and reduce the sliding friction force.

As shown in FIG. 5, by applying a phosphate film chemical conversion treatment having a thickness of 5 μm or more, the sliding portions of both scrolls, that is, the end plate 1c of the fixed scroll 1 and the end plate 2b of the orbiting scroll 2, are shown. The phosphate chemical conversion coating 2g is worn early in a state of being fitted to the actual sliding plane forming shape of, and exhibits conformability, and the degree of adhesion is further improved.

Further, the gaps related to gas leakage are processed with high precision in terms of step size, parallelism, and surface roughness because both the end surface 3c of the frame 3 and the pedestal surface 3b are end-ground by the same chuck. Compared to the machined surface that has been machined and found in conventional scroll compressors, each precision can be greatly improved. On the other hand, the orbiting scroll 2 precisely grinds the back surface 2e of the outer peripheral projection 2d of the end plate 2a before processing the end plate 2b, and uses this as a reference surface for end milling of the surfaces of the lap 2a and end plate 2b. Deformation at the time of chucking due to poor flatness of the machined surface found on the machine can be significantly suppressed.
It is possible to suppress variations in flatness and thickness of b.

As described above, by using the pump part components of this embodiment, the pedestal surface 3b of the frame 3 and its frame are
End plate 1 of fixed scroll 1 that abuts on end surface 3c of frame 3
The accuracy of the space width formed by c is improved, and in addition, the accuracy of the end plate outer peripheral convex portion 2d of the orbiting scroll 2 sandwiched therebetween is improved, so that the sandwiched gap of the orbiting scroll 2 can be reduced. Applying 2g of phosphoric acid conversion coating,
Due to this gap conformability, it is possible to significantly reduce the leakage of intermediate pressure gas.

As described above, the scroll compressor in which the inside of the hermetically sealed container 7 has a high-pressure atmosphere improves the processing accuracy of the pump assembly parts as in this embodiment, and the orbiting scroll 2
The combined use of 2g of the phosphate chemical conversion coating makes it possible to drastically reduce the assembly gap that leads to gas leakage of the compressed or compressed pressure part, which causes performance degradation. A highly efficient scroll compressor with low power consumption can be provided. It should be noted that although the above embodiment describes the scroll compressor, the present invention is not limited to the compressor, but can be applied to a method for manufacturing a scroll fluid machine such as an expander.

[0038]

As described in detail above, according to the present invention, it is possible to realize high precision of each component constituting the pump portion and to prevent gas leakage from the end plate surface sliding portions of the fixed scroll and the orbiting scroll. It is possible to provide a method for manufacturing a scroll fluid machine that suppresses the above and achieves the performance improvement of the scroll fluid machine.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a method for processing a fixed scroll of a scroll compressor according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a method for processing an orbiting scroll of a scroll compressor according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a method of processing a frame of a scroll compressor according to an embodiment of the present invention.

FIG. 4 is a vertical cross-sectional view of a pump unit of a scroll compressor according to an embodiment of the present invention.

5 is an enlarged view of an essential part showing an example of a familiar state of a phosphate conversion coating between sliding surfaces of a fixed scroll and an orbiting scroll of the scroll compressor of FIG.

FIG. 6 is a vertical sectional view showing a pump portion of a conventional scroll compressor.

[Explanation of symbols]

1 fixed scroll 1a wrap 1c End plate 2 orbiting scroll 2a wrap 2b End plate 2d End plate peripheral convex part 2e back 2g phosphate conversion coating 3 frames 3b Pedestal surface 3c end face 5 crankshaft 5a Eccentric part 7 sealed case A, F end mill B measuring instrument C grinding wheel D Super finishing whetstone E, G grinding wheel

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hitoshi Sawamura 800 Tomita, Ohira-machi, Shimotsuga-gun, Tochigi Prefecture, Hitachi, Ltd. Living Equipment Division, Thermal Equipment Division (72) Inventor Toshio Yamanaka Tomita, Ohira-machi, Shimotsuga-gun, Tochigi Prefecture 800, Hitachi, Ltd., Living Equipment Division, Heating & Cooling Headquarters (72) Inventor, Koichi Inaba, Tomita 800, Ohira-cho, Shimotsuga-gun, Tochigi Prefecture, Ltd. Living Equipment Division, Hitachi, Ltd. (56) References 61-175291 (JP, A) JP 60-113082 (JP, A) JP 61-236442 (JP, A) JP 63-100288 (JP, A) JP 58-57002 (JP, A) A) JP-A-3-67081 (JP, A) JP-A-58-126492 (JP, A) JP-A-61-226584 (JP, A) JP-A-5-293712 (JP, A) Kaihei 6-712 (JP, A) JP 6-99306 (JP, A) JP 1-187388 (JP, A) JP 1-51909 (JP, B2) (58) Fields investigated (58) Int.Cl. ⁷ , DB name) F04C 18/02 311 B23Q 3/00-3/18 B23Q 37/00-41/08 B23P 23/00-25/00

Claims (3)

(57) [Claims] 1. A motor and a pump unit connected to the motor are housed in a hermetically sealed case, each end plate has a spiral wrap, and a pump chamber is formed by engaging the respective wraps. A fixed scroll and an orbiting scroll; a crankshaft for transmitting the rotational force of the motor to revolve the orbiting scroll; and a frame having a bearing for supporting the crankshaft. The outer peripheral portion of the end plate has a convex portion on the back side over the entire circumference, and the outer peripheral portion of the end plate of the orbiting scroll having the convex portion is a groove that slides in contact with the wrap of the orbiting scroll.
The fixed scroll end plate on the outer side of the bottom and the pedestal surface of the frame are placed in the gap and added.
The fixed scroll end plate is swung by an intermediate pressure gas.
Sucrose - In the production method of a scroll fluid machine comprising presses the end plate surface of Le, the fixed scroll, said of the orbiting scroll rats
The flatness of the fixed scroll end plate, which slides in contact with the end face plate side, is 3
polished processed μm or less, the orbiting scroll is then subjected to grinding to the back of the end plate, referenced to the grinding back-side, the flatness of the end plate surface thickness and end plate surface by an end mill The frame is subjected to precision processing, the end surface of the frame that comes into contact with the fixed scroll and the pedestal surface that faces the outer peripheral portion of the rear end plate of the orbiting scroll are associated with each other, and the frame is further ground. Is subjected to a phosphate chemical conversion coating treatment, and these parts are combined to enhance the adhesiveness of the orbiting scroll and the fixed scroll when the end plate surfaces are sliding, and a method for manufacturing a scroll fluid machine characterized by the above-mentioned. . 2. An orbiting scroll is mounted on a processing machine and is outside the end plate.
After grinding the back surface of the circumferential protrusion, use this back surface as a reference
Then, form the wrap by side cutting of the end mill,
In addition, the end plate is cut to perform the flat processing of the end plate, and the end plate thickness dimension
And the flatness of the mirror plate surface are precisely processed to 5 μm or less, and then the orbiting scroll after the processing is removed from the processing machine.
State, the film thickness is least 5μm or more phosphate conversion was
The method for manufacturing a scroll fluid machine according to claim 1, wherein a film treatment is performed . 3. The frame is in the same chuck state of the processing machine.
The end surface of the fixed scroll with which it abuts and the base surface.
The method for manufacturing a scroll fluid machine according to claim 1, wherein the scroll fluid machine is machined.