WO1984001604A1

WO1984001604A1 - Swash plate compressor and method of manufacturing shoe therefor

Info

Publication number: WO1984001604A1
Application number: PCT/JP1983/000341
Authority: WO
Inventors: Kenichiro Futamura; Keiichiro Otsu
Original assignee: Taiho Kogyo Co Ltd
Priority date: 1982-10-12
Filing date: 1983-10-12
Publication date: 1984-04-26

Abstract

Swash plate compressor for a car air-conditioner supplied with lubricating oil in the form of a mist, and a method of manufacturing a shoe employed therefor. The weight of a swash plate (5) is reduced by employing a lightweight metal therefor, and, in order to obtain a shoe (3) which will never seize against the lightweight metal swash plate (5), a hardened iron material is employed for the shoe, and a spherical recess (10) is formed in a piece of the iron material piece before it is hardened. In addition, to stabilize the seizure resistance of the shoe (3), a ball (8) is brought into substantially line contact with the spherical recess (10), and circular radii (R1 and R2) of the spherical recess (10) at contact points (C1 and C2) at which the ball (8) touches the spherical recess (10) are made substantially equal to each other. The radii (R1 and R2) are also made larger than half the diameter D of the ball (8) (R1 = R2 > 1/2 D). This swash plate compressor is lightweight and has a high performance, and also enables a reduction in the cost of mass-producing it.

Description

Specification

Swash plate type compressor, and

The method of manufacturing the unit

Technical field

The present invention relates to a method of manufacturing a swash plate type compressor and a method for manufacturing the same.], And more specifically, to a swash plate type compressor such as an aluminum alloy, such as an aluminum alloy. This is related to a swash plate type compressor using a swash plate. Background art

Swash plate compressors are known, for example, from U.S. Patent Nos. 4,037,522 and 4,224,679 filed by the present applicant. The structure is such that a swash plate that is rotated by a rotating shaft is arranged in a cylinder], and a vertical or double-headed swash plate is used according to the rotation of the swash plate. The main feature is that the shaft is reciprocated in the direction of the rotation axis in the cylinder bore, but the swash plate is fitted and held between the swash plate and the piston to rotate the swash plate. In order to convert the movement into a reciprocating movement of the piston, the swash plate and the ball are arranged at predetermined positions on both sides of the swash plate, and one side surface of the swash plate is in sliding contact with the side surface of the swash plate. The side surface is formed with a spherical concave portion to fit and hold a part of the ball, and a part of the ball is also fitted and held in the concave portion inside the piston.

Applicant filed US patent for swash plate compressor

OMPI Owner of No. 4,24 4,6 79! ? , Spherical black as swash plate

When lead-iron or alloy steel is used, high

Using an aluminum-containing aluminum alloy (Al alloy)

In other words, it has been found that seizure occurs instantaneously. So

Here, in the above-mentioned U.S. Pat. No. 4,244,679, the ball

Used in combination with iron or alloy steel swash plate

Highest load capacity when used, high-speed sliding property,

Tin 2.5 to 5% for impact and abrasion resistance

銥 20 to 25, the remainder being substantially copper])

Was proposed on the sliding surface side with the swash plate.

Also, according to Japanese Patent Application Laid-Open No. 53-129311 filed by the present applicant, the sliding surface between the swash plate and the swash plate is used as a show.

Copper lining is applied to the

Material that does not easily seize with steel on the spherical concave surface on the sliding surface side

A steel-based material with a coating layer consisting of

It is known to be used.

Similarly, Japanese Patent Application No. 54-40263 filed by the present applicant

According to Japanese Patent Application Laid-Open No. 55-133493, a swash plate type

Silicon-containing aluminum to reduce the weight of the breather

When a miniature alloy is used for the swash plate,

Boron-containing iron as a show with excellent sliding properties

A fired layer of group metal is formed on the sliding surface side with the swash plate

This is known.

However, according to the applicant's recent research,

C. ''

, The scoring performance of the powder is not yet sufficient. In particular, from a structural point of view, the surface layer of the boride-dispersed shower has particularly low fatigue strength due to the existence of the interface between the bound boride particles. Also, is the boride particle size dependent on the boride powder manufacturing method ?? Is it restricted to coarse particles? Also, due to the presence of boron ?? Formed and solidified structures are present in the surface layer of the boride dispersion show. As a result, it is thought that the toughness of the shoe is low. In addition, since a baking step for forming a boride dispersion layer is required, there is a disadvantage that the cost of the shochu increases.

Disclosure of the invention

If the swash plate of the swash plate type compressor is made of metal, use a ferrous plastically processed material that has high hardness.] If three chus are manufactured, the hull will have sufficient strength. The present invention is based on the fact that the swash plate has a tendency to be squeezed by the swash plate due to its remarkably high hardness. I understood from the research of the person. Also, when heat treatment such as quenching, carburizing and metal infiltration is performed to impart high hardness to the shroud, a modified form of the shroud is generated in the fitting holding part of the ball. As a result, when the contact position between the ball and the shuffle is large, the ball is displaced in the direction opposite to the swash plate side, and the ball is properly displaced by the shuffle. It may be possible to keep it.])

CMPI

"V / ΊΡΟ

/ Was. Such a deviation of the contact position is reduced or reduced.

In order to achieve qualitatively zero, the production process of the show should be optimized.

Designed for ^ or the shape of the ball fitting and holding part is appropriate

It is important to determine this.]

Swash plate type compressor is a ball / swash plate contact type.

Different compressors were found to be provided

In view of the above, the present invention includes a light metal swash plate.

For swash plate type compressors,

Yo]? Improve the sliding performance of the shoe, especially the seizure resistance.

This is the primary purpose.

Further, the present invention provides a swash plate type swash plate compressor.

In order to reduce the amount of water, aluminum, magnesium or

Uses light metals such as zinc (including alloys) and steel

Even if it is used for a single material, the soft material

Effectively enables swashplates to be bitten by hard forest

Provide a swash plate type combustor that includes a shroud to prevent

The second purpose is to provide.

Furthermore, the present invention provides a method according to

When heated and then cooled to give it hardness

At the ball fitting holding part of the shower

As low as possible, or preferably substantially zero

A swash plate type compressor that includes a

Providing is the third purpose.

And to achieve the third objective-swash plate type

CMPI

4. V IFO '' A fourth object is to provide a method for manufacturing a chassis for a gas sensor.

For the purposes of the first P above, there is a cylinder which defines the bore inside and a light alloy which is arranged in this cylinder and which is rotated by a rotating shaft. A swash plate and a piston operatively connected to the swash plate so that the swash plate can be reciprocated in the direction of the rotation axis in the bore of the cylinder in response to the rotation of the swash plate. D, including a shoe and a ball fitted and held between the swash plate and the piston, wherein the shoe is a plastically processed iron-based material having a hardness of Hv 700 or more. Is formed from a material], and the shoe is chamfered on a peripheral portion on one side facing the swash plate, while a part of the ball is fitted on the other side. A spherical recess for holding is formed.] 9 In addition, part of the ball is also fitted and held in the spherical recess inside the piston!) A swash plate type compressor supplied in the form of a mist is provided.

In accordance with the second objective, a swash plate type combustor is provided that does not allow the chassis to nibble on the swash plate.

Further, according to the present invention, according to the third object, the ball is substantially in linear contact with the spherical recess, and the spherical recess at the contact point where the ball comes into contact with the spherical recess. arc having a radius (R i and R ₂₎ is rather substantially equal said mutually is et to this radius (R i and R ₂₎ is - of the diameter D of the ball Ichiru A swash plate type combustor characterized by the fact that CR i = R 2> | D) is provided.

According to the fourth object, it is possible to provide a method for manufacturing a swash plate type compressor shower capable of efficiently manufacturing a shoe achieving the first to third objects. In other words, the plastically processed iron-based material is formed into a predetermined size almost matching the diameter and thickness of the chassis, and then the spherical concave portion is formed in the iron-based material. A method for manufacturing a swash plate type compressor shower, which specializes in quenching by quenching, is selected.

In the present invention, the hardness of the shoe is a hardness measured on a surface of the shoe in contact with the swash plate with a Vickers hardness meter with a load of 300 ^. The hardness after quenching is measured.

In the present invention, the iron-based material is a material in which an element other than iron is impregnated into the surface of a base mainly composed of iron in a small amount, or a thin film is finally deposited on the surface. Including when

In the present invention, a bar material or a plate material having a close-packed structure can be employed as a material after forging, rolling, extrusion, drawing, or other plastic working after forging.

Hereinafter, the show according to the present invention will be described in detail.

The shroud of the present invention is formed by processing an iron-based material having high hardness, and is formed by plastic working.] 9 Therefore, it has high wear resistance and high strength and toughness. As a result, the shoe of the present invention is characterized in that it has a high load capacity to withstand the load applied from the swash plate, is less likely to be worn, and has less deformation that induces local wear. This feature is associated with increasing the seizure resistance of the show. Push from the hardness of another aspect of the present invention is Hv 7 0 0 or more, yo]? Favored by rather ferrous material _c present invention is Hv 7 5 0 or more indicates the hardness has high good heat treatment or surface treatment While not limited, bearings, high speed steels, carbon steels, and case hardened steels are preferred. Bearing steel and high-speed steel exhibit hardened or quenched hard carbides and are finely dispersed in a matrix mainly composed of martensite. It is a plastically processed material that maintains a desirable balance of excellent carbides and a matrix with excellent toughness and strength. For such bearing steels, carbon 0.95 ~; L10 and chrome 0.9 ~ 1.6 as the main alloy components, necessary.]? Molybden 0.1 ~ It is a known material containing 0.25 ° h, with the balance being iron and unavoidable impurities. In addition, the high-speed steel may be a well-known tungsten or molybdenum-based high-speed steel. Examples are SH2 (C: 0.70 to 0.85%, Cr: 3.8 to 4.5 ^, W: 17 to 19 ^, V: 0, 8 to 1.2%), SH5 ( C: 0.2 to 0.4%, Cr: 3.8 to 4.5, W: 17 to 2, 2 ^, V: 1-1.5 °,

ΟΜΡΙ Co: 16 to 17 ^), SKH9 (C: 0.8 to 0.9,

Cr: 3.8 to 4.5¾β, Mo: 4.5 to 5.5, W: 5.5

6.7%, V: 1.6 to 2.2), and SKH55 (C:

0.8 to 0.9%, Cr: 3.8 to 4.5 ^, Mo: 4.8 to

6.2, "W": 5.5 to 6.7, V: l. 7 to 2.3 ^,

Co: 7-9). Carbon steel and case hardened steel are known

For example, S10C, S17C, S45C, S15CK, SCM21, etc.

It may be. Alternatively, it may be SCr2 or the like.

The carbon content of these structural steels is in the range of 0.1 to 0.6.

Enclosures are preferred. Use a known method for case hardening steel.]? Carburizing and quenching

The treatment is gas carburizing or solid carburizing.

Depending on the charcoal, preferably 0.3 to 1

Element into the steel, followed by 830 to 880

Quenching and, if necessary, low-temperature quenching of 150-200 C

A method of restoring or removing stress may be used. Halo

Periodic table from the salt bath of genide! Group III and group V metals

TD treatment that forms carbides by infiltrating into the steel base material

Metal infiltration treatment to be performed on ferrous plastic working materials

To give a predetermined hardness to

You can do it. Bearing steel and high-speed steel are hardened by known quenching methods.

O heat treated

According to the present invention, the iron-based plastic

Since the material has high hardness, the friction of the shoe itself

Wear is small, but swash plate, which is the counterpart of Shu, is localized

? ヽ C PI,-.

, It tends to be severely worn. Sh according to the present invention

In the case of-, the periphery of one side in contact with the swash plate is chamfered.

] 3, the wedge between the circumference and the swash plate

A mold space is formed, and lubricating oil is

An oil film is formed by being caught in between. The pressure of this oil slick

The force is at the narrow end of the wedge-shaped space.]? Because the force is so high that the swash plate is released from the swash plate,

It is prevented from being bitten by the user.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

I will tell.

BRIEF DESCRIPTION OF THE FIGURES

Fig. 1 shows a swash plate type compressor for a power cooler.

It is a vertical front view.

FIG. 2 is a front view showing an embodiment of the show.

Figure 3 (^ ~ (¾ the chamfer plane side of the sheet _¾ one]? Describes the

Figure 4 shows a spherical shape with a spherical shape.

A drawing conceptually showing the shuffle before heat treatment,

Fig. 5 shows that one spherical concave part is due to heat treatment.]} Deformation

Explaining the drawing,

Figure 6 shows the preferred shape of the present invention.

A drawing that conceptually explains the ball and ball,

Fig. 7 is a graph showing the change over time in the coefficient of friction.

Figure 8 is a graph of the coefficient of friction.

The swash plate type condenser shown in Fig. 1

/)-· ', ~ / C ...>'"'-Λ Plates will be described in that the swash plate for 1 1-2 5 containing S i, but the description of this is One in Z _n, or M _g swash plate

Please understand that this applies to all cases.

In Fig. 1, the rotating shaft is located inside the cylinder (1).

(2)]? The shuffle (3) and the ball (8) are fitted and held between the rotated swash plate (5) and the piston (4). In response to the rotation of (5), both heads of the piston (4) are reciprocated in the direction of the rotation axis in the cylinder bore. The side of the swash plate side of Shu (3) has a roughness of 0.8-: I.6 It is a nearly flat surface polished to 6 micron], while the ball of sh — (3) On the (8) side, a spherical concave portion for fitting and holding a part of the ball (8) is formed. Lubricating oil and refrigerant are supplied to the cylinder (1) in a known manner in the form of a mist. The problem of the shower (3) sliding on the swash plate (5) is that when the shower (3) has insufficient seizure resistance, for example, US Pat. No. 4,037,522 In the case of No. 1 which has the Cix-Sn-Pb sintered layer on the surface, it may burn out instantaneously, but according to the present invention! ) By processing an iron-based plastic working material with high hardness into a shroud (3), the amount of the mist is small and the swash plate (3) only small amounts only even under lubricant is present ¾ have situations, baked Tsukeka products should ¾ ¾ between 5) ₀

As shown in Fig. 2, the swash plate of Shu (3)

(Not shown) (3a) (hereinafter referred to as swash plate)

_ O PI_ The contact surface (referred to as “3a”) is chamfered at its peripheral edge (3b) .3) As a result, the lubricating oil enters the wedge gap and the center surface (3c) ) Prevents the swash plate from being bitten by the metal contact between the swash plate and the swash plate ( ⁵ ). The chamfer] 3 is 5 im or more, preferably 10 zm or more, preferably 0.1 to 2 Sir R-plane, and the chamfer height h is 5 micron or more. Chamfered]?

The length L of 3 b is 0.5 baskets or more, and the angle of chamfer]? Less than a small chamfer]? Is preferred. At this time, according to a conventional method, a chamfer of 0.5 to about 45 ° around L dew]? (Not shown) The chamfer of the present invention can be added to the peripheral portion 3b.

The surface (3d) opposite to the swash plate contact surface (3a) (hereinafter referred to as the ball support surface 3d) has a spherical recess (10) for fitting and holding a ball (not shown). Are formed by grinding, polishing, punching, etc.].

Figure 3 shows some shapes of the chamfer. FIG. 3 (A) shows a view in which the shuffle (3) and the ball (8) are assembled, and the chamfer]) is an enlarged view of the part C shown in FIGS. 3 (B) to 3 (B). © Shown in the figure. Fig. 3 (B) shows a general chamfer]? With an angle of 45 °. This is because, in the present invention, in which the chassis is harder than Hv 700, the tendency of the swash plate to be hardened is not adopted in the present invention. Fig. 3 (C) is a chamfer! ) Is 15 ° or less] 9, which can be applied to the present invention. However, if the chamfer angle exceeds 15 °, the swash plate tends to bite and is not adopted. Figure 3 shows an example of a rounded chamfer. The radius R should be between 5 m and 2 m. If this radius R exceeds two views, the load capacity decreases because the area of the plane side of the shuffle (3) decreases. (Radius) is good.]? Desirably 10 Am or more, preferably 0.1.

Fig. 3 (E) shows a general curve that connects the circumference (3b) with a general chamfer (angle 45 °) and the flat surface (3C) with a smooth curve. ]), And if there is this smooth curve, the normal chamfer angle 45. Can also be adopted.

FIG. 3 (F) is ¹ 0 β of the micro-chamfer week緣部(3 b) and by connecting plane portion (3 ¾ Me Raka curve]? Favored by force one path.

Figure 3 (G) shows 10 ° and 45. Two-step chamfering! ), Fig. 3 © shows a two-step chamfer of the R part having a roundness of 10 °], and these two-step chamfers are also adopted in the present invention.

In a preferred embodiment of the present invention, a copper plating film, a swash plate (not shown), and a copper plating film, Resin coating with molybdenum sulfide as an additive, zinc plating skin coating, Cu-Ni plating coating, sulfurized coating, zinc phosphate coating, manganese phosphate coating, and zinc oxide coating A resin coating with a zinc lubricant or manganese phosphate coating as a base and a solid lubricant such as molybdenum disulfide as an additive, or other coatings Mainly solid lubricants

〇ί,? Ι At least the center surface (3c) of the shroud (3) (however, Cu plating is applied to the center surface 3c) or the like Can also be formed into a spherical recess (10). Since the show (3) according to the present invention has a high hardness, it has a high tendency to wear one of the mating materials, that is, the swash plate. In some cases, a new swash plate type combustor may cause seizure failure especially at the beginning of operation when the effect of the wedge type oil film is not sufficient. Therefore, it is desirable that the shroud (3) be made to match the mating material, that is, the swash plate and Z or ball, in the early stage of use using copper and a solid lubricant. The molybdenum disulphide film is made of manganese phosphate or zinc phosphine as the underlayer.] Molybdenum disulfide is applied as a binder with a resin or epoxy resin. The thickness of the copper plating film or the like to be applied is appropriately determined depending on the processing accuracy of the shower, ball, and swash plate, and is, for example, several microns. The copper plating is the center plane.

(3c) must not be formed.

Hereinafter, referring to FIG. 4 and FIG. 5, the shape by heat treatment (1) (including quenching, quenching and tempering, carburizing, nitriding, and metal infiltration treatment) will be described with reference to FIGS. Explain the change. As shown in FIG. 4, prior to the present invention, the outline of the spherical concave portion (10) had an industrially spherical shape.

OMPI According to the breath processing method, which is spherical and designed to make surface contact with a part of the ball (8) that has a shape, it has been set. After heat treatment of the shroud material whose contour has been determined in this way, the contour of the spherical concave portion (10) is deformed as shown in FIG. In FIG. 5, (10a) indicates the outline of a spherical recess having an industrially spherical shape, which is shown as a perfect circle on the drawing, (0) indicates the center point of (10a), and (10a) indicates the center point of (10a). 0 ') is the center of ball 8 after heat treatment, and (d) is the bottom of (10a) where ball (8) passes through (0 and 0'), that is, the swash plate (shown in the figure). This is the amount of deformation at the position of show (3) that is farthest from (3). FIG. 5 shows the outline of the spherical concave portion after the heat treatment. However, the heat treatment was performed so that the ball (8) was held at the outer edge of the spherical concave portion (10). Yo D deform.

That is, by heat treatment, Shu (3)

(8) has a tendency to be displaced from the swash plate (not shown) in the direction in which it is displaced, and the amount of deformation (d) is the same in the design and fabrication method ( 3) But it varies greatly. In order to measure such a deformation (d), it is necessary to perform complicated measurements on all balls. Therefore, it is not realistic to correct the thermal deformation profile to a true sphere according to the deformation amount (d).

The seizure resistance of SH-1 (3) and the properties of SH-1 (3) from the swash plate (not shown)

__C PI ) Is essentially different between the case (3) designed with the deformation amount d O and the case (3) where heat deformation occurs (d> 0). In addition, the amount of deformation (d) is the same in many shochus with the same design and the same machining method.]? The size of the gap between shu (3) and the swash plate (not shown) As a result, some of the swashplate-type compressors generate noise during the rotation of some swashplate type compressors, in the worst case, resulting in burnout of the show. In addition, it is rare that the outline of the spherical recess after heat treatment is rotationally symmetrical with respect to the central axis of the ball (8).], The spherical recess is rotated by thermal deformation. The shape is U-distorted from the symmetry. The contact area between the ball (8) and the shroud (3) will be an interrupted circle if the thermal deformation of the spherical recess is rotationally symmetric, but kana]) Discontinuous circle or one-sided! ). As a result, the ball (8) rotates irregularly in the spherical recess (10), and intermittently hits the spherical recess (10), thereby driving a swash plate (not shown). Increased torque or seizure of show (3) occurs.

Prevents thermal deformation of the shuffle (3) during the heat treatment described with reference to FIGS. 4 and 5, or reduces the amount of thermal deformation (d) of the shroud (3) and its variation In order to reduce sticking and to ensure that the ball (8) makes stable line contact with a substantially continuous circle at the point of contact with the chassis (3), the ball before heat treatment is used. Figure 6 shows the shape of the spherical recess (10). The cormorants I was, ball (8) and the spherical concave portion (1 0) is the power sale by substantially line contact, or (C t and C ₂₎ to connect the contact circle (2 points in the illustrated (C i and C ₂ ) are represented), the radius (R i and R ₂ ) of each arc of the contact point (C i and C ₂ ) as viewed in the vertical plane is substantially equal (R i R ₂ ) It must be larger than the diameter (D) of the ball (8) by ½ times (R 1 = R 2> —D). Also after this heat treatment, the shape of the spherical recess (10) of R i = R 2 and R 1 (R ₂ )〉 4D is obtained after the heat treatment, and the ball (8) and the shell — (3) is in line contact with a substantially continuous circle _{c In} Fig. 6, (C and 0 ₂ ) are the center points of the arcs of the contact points (C i and C ₂ ) ]) And) are the radius of ball (8) and (0) is the center of ball (8).

In the present invention, the difference of R 1 CR ₂ ) -odd D is particularly limited. If this difference is extremely large, the ball (8) is rotated in the swash plate type combustor. The position of ball (8) becomes unstable during operation. If (R ₂ ) — «D is determined so that the center points (0 i and 0 ₂ ) are located within the ball (8), the above-mentioned positional instability of the ball (8) may occur. However, if Ri (R ₂ ) — is very large (preferably — is ¾), the sphere between the tangent (C 1, C ₂ :) and the ball support surface (3 d) Let the radius of the concave part (10) be [R i, R ₂ )! ) Need to be small

0 ο

The most preferred (R 1 and R ₂ ) in the present invention are R ₁ (R ₂₎ = a 0.5 0 5 ~ 0.5 3 5 D . The shape of the spherical recess (10) on one side of the central axis of the ball shown in Fig. 6 depends on various curves such as a single arc, a quadratic curve, a higher-order curve, and a hyperbola. It is determined. However, a single arc is most preferred from the viewpoint of machining, particularly punching, the spherical recess (10). If the spherical recess (10) is defined by a quadratic curve, etc.], the curvature of the curve is from the swash plate contact surface (3a) to the ball support surface (3d). It is determined to increase by

Sixth referred straight and C ₂ 0 ₂ are shown in FIG angle (hereinafter contact angle to ¾ with the center line of balls (8) and (9) is ball Lumpur (8) shea Yoo chromatography (3 Assuming that the contact angle 0 is about 90 °, the ball (8) is completely unstable in the vertical direction of the drawing]), while the contact angle <9 If the angle is about 0 °, the ball (8) is not stable in the horizontal direction of the drawing D because it is supported at one point by the shot (3). In the present invention, the contact angle = 0 ° and 90. The contact angle is appropriately determined between the two extremes. At this time, when the contact points (C i and C ₂ ) approach the ball support surface (3 d) (equipment 9), when the spherical recess (10) is worn, the ball (8 ) Is pushed into the spherical recess (10), while the contact points (C i and C ₂ ) are difficult to reach from the ball support surface (3d). The surface of the ball (8)]) becomes more susceptible to concentrated loads. Contact point and position of C ₂ ) Considering the above facts due to the change in position, it is intermediate between the appropriate [?] And the lower [3], that is, the contact angle 0 is preferably from 12 ° to 60 °, 17. ~ 56 ° is more preferred, and about 45 ° is most preferred. In addition, the change in the height of the gang is the most in the case of the right [?], The lowest in the middle]), and the lowest in the bottom]).

As described above with reference to FIG. 6, the spherical concave portion (10) of 7tR i (R ₂ )> D has almost zero or significantly small amount of shape change due to heat treatment. Also, the ball-shaped recess and the ball after heat treatment are in line contact! ) And the total length of the non-contact part is small. The performance of the shower making such contact is comparable to the performance of the shower in spherical contact, and it is extremely stable, so the number of defects due to heat treatment has dramatically decreased. It is no longer necessary to inspect the shape of the spherical recess after the heat treatment.

Also, the larger the length of the line contact part, the smaller the change in the assembly height (ie, the amount of d)! Also, the gap between the ball and the ball is small.], And the amount of noise generated by these collisions is also small. As an example, regarding a factory that manufactures a fully spherical recess with a non-defective rate of about 50%, the present invention having a spherical recess having a shape of R 1 = R 2〉 ““ It is possible to manufacture a shoe with a non-defective rate of 65 ^ or more. The greater the difference between R 1 (R ₂ ) and D, the higher the non-defective rate! ), & 0 good quality rate It is possible.

In the present invention, when plating is performed after the curing treatment, the plating layer may be polished. Since the plating layer is cut into the ball by a familiar action, it is not necessary to strictly control the polishing amount and precision of the plating layer, and it is merely necessary to form the ball into a shape.研 Polishing should be performed to the extent that it can be exposed.

BEST MODE FOR CARRYING OUT THE INVENTION

In the swash plate type compressor "^" of the present invention, the swash plate has a diameter of 60 to 90 N / J, and contains 15 to 20 silicones. In addition, the entire shell is bearing steel, high-speed steel or carburized and quenched structural steel.]]], And the shell is the thickness (the maximum thickness of the part where no spherical recess is formed). ) Is 3 to 5 feet in diameter and 13 to 20 dragons in diameter.)) The material of the method of the present invention may be rods, plates, pipes, or the like. The shape of the starting material determines the outline of the machining method for obtaining a uniform shape, ie, in the case of a rod, the flat surface of the disk or disk from which the rod is cut is the swash plate contact surface (3). a) and ball support surface (3d) (hereinafter collectively referred to as one side

3a, d) and then machining after cutting. In the case of a plate, machining is performed after the punching so that both flat surfaces of the circularly punched plate become one side (3a, d). For pipes, perpendicular to the pipe axis The machining after the cutting is performed so that the end face of the cut piece, that is, both sides of the thick portion, becomes one side of the shroud (3a, d). The above-mentioned machining involves polishing the outer periphery of the shoe, such as: rough cutting and finishing polishing of the concave part, drilling through the center of the show (by boring, etc.), etc. Including. These machining processes must be completed before the hardening process.], And the machining process after the hardening process depends on the hardening process. ?? It is preferable to perform the processing to the extent that the surface roughness and the adhered foreign material layer due to the above are removed, that is, to perform the processing with an extremely high degree of roughness that is hard to substantially deform the iron-based material. Of the present invention

In the method of realizing RI = R2> D before quenching, the thermal deformation of the shell is negligible for the measurement accuracy.]}, And the thermal deformation of the remaining i? There is no actual harm in performance. Therefore, there is no need to intentionally correct the thermal deformation of the chassis in either of the two methods.

The spherical recess before heat treatment has a ball diameter of about 13.5

(7/16 inch), it is better to set Ri = R2 = 7.08 0, ^ = ^ = 0.525, and 0 = 45 °.

According to the present invention]? When manufacturing the shower. When the iron-based material is a plate material, punching, peripheral polishing, rough cutting and pre-cutting in preparation for the formation of a spherical recess, Cii plating, drilling spherical Final forming of recesses (eg, Ri = R2>"" D), Drilling of holes, removal of peripheral chamfers]? .., Swash plate contact surface polishing Carbide quenching, lapping, puffing, and washing are sequentially performed. C If the carbon steel pipe or rod is made of an iron-based material, cutting, rough cutting, Cu plating, spherical forming (for example, R! = R 2>--D) Rough polishing, carburizing and quenching or quenching, finish polishing, and cleaning are sequentially performed (hereinafter referred to as steel pipe (rod) process). Next, if the bearing steel rod is made of an iron-based material, cut off] 9, circumferential surface cutting, rough cutting of spherical concave parts and spherical cutting (for example, R〗 = R 2〉 ~ D), Cu Tack, grinding, quenching, lapping and lapping, and cutting are performed sequentially (hereinafter referred to as bearing steel process).

O P1

/ ΊΡΟ Hereinafter, examples of the present invention will be described.

Example 1

A sliding test was performed on the shoo as shown in Table 1 under the following conditions, and the load at which the shou and the mating material were seized was obtained. The dimensions of the shower were as follows.

Diameter-18 mm, thickness-4.7 leakage, normal 45 ° chamfering] 9 In addition to about 0.5 basket, the following micro chamfering] 3 was performed: chamfering] j length L = 0.5 basket; chamfer angle (5) = 3. ; Chamfer]) Height h = 26 im. Through-hole diameter at the center of the spherical recess = 3 丽

The outline of the spherical recess before quenching the shoe was industrially a perfect circle.

Sliding test conditions

Sliding speed: Constant at 15 mZsec.

Load: 20 ^ ² increments, each load stage lasts 30 minutes.

Lubricating oil: 9 volumes of refrigeration oil mixed with 1 volume of refrigeration oil

Lubricant.

Lubrication method: Flt applied, approx. 0.8 ccZ.

Specimen of the mating material: 19 to 21 in standard value Multiple Si, 5 to 6? G

Cu, 0.45 to 0.65% Straightness of the aluminum alloy with the balance of Mg less than 1 haze, surface roughness 0.4 to 0.6 S O disk.

Shaft: Straightness 1 micron or less

Hanashin), roughness 0.4-0.6S.

OMPI

,

The above-mentioned boride dispersion material is Ni 20%, the balance being iron alloy powder, --ron powder, lead powder and iron powder.

Fosnool powder is mixed so as to have a content of 20%, a content of Pb of 5%, a content of P of 8%, and residual iron, and apply it to a steel plate having a thickness of 2 spirits. Then, it was prepared by firing at 110 to 1000 in a hydrogen reducing atmosphere.

Example 2

A test having the same dimensions as in Example 1 (Table 2) was performed under the condition A] ?. Table 2 shows the seizure load.

, Nino 'f-, ゝ一^O - ^M iF ^? O ^j .

^V No. 2

¾ ぉ, Specimens 14, 16 and 17 are the same as Specimens 7, 9 and 10 in Table 1, respectively.

Figure 7 shows the results of measuring the friction coefficient of the test materials 11, 12, 13, 14, 14, and 16 under the above conditions. [The graph in this drawing]] It can be seen that the test material of the present invention has a low friction coefficient and is stable up to a high load.

', Two:' Example 3

An S12C Shui was manufactured. The dimensions of the pad were the same as in Example 1] 3.

The outline of the spherical recess before quenching the show was industrially a perfect circle. The show was subjected to the following conditions] 3 Carburized and quenched.

Heating / cooling conditions-Carburizing at 920 x 4 hours, furnace-cooling to 800 Ό, quenching for 20 minutes, then low-temperature quenching of 150-200 for 2 hours went.

Gas atmosphere—Butane gas during heating at 920 mm, and ammonia decomposition gas during cooling in the furnace.

Jig-A heat-resistant steel tray in which all of the above shows are arranged in one step.

Before and after carburizing and quenching, insert a steel ball into the spherical concave part of the shell, measure the height from the plane part of the shell to the top of the pole with a micrometer, and measure the assembly height. And

Table 3 shows the results. O

O PI Also, after carburizing and quenching, apply a thin coating of paint to the ball of the shoal, put the ball in the spherical recess, and rub the ball sufficiently with the hand by hand. This U test is for non-defective products in which the paint transferred to the recess is almost circular or ring-shaped and the transfer length is 80 or more of the circumference. At that time, the failure rate] was 50.

When the seizure load of non-defective products was measured under condition A, the seizure load was 0 7 o with a seizure load of 300 to 150 and a standard deviation of 25.

Example 4

After forming a copper plating film to a thickness of 5 τη only on the concave portion before carburizing and quenching in Example 3, the rejection test was performed.

Example 5

'Depends on the steel pipe (bar) process.]) Shows were manufactured from S12C steel bars.' Prior to carburizing and quenching, the shape of the spherical recess of the show was adjusted as shown in Table 5. ¾ The diameter of the wheel (D :) was about 13.5 inversion (7/16 inch). Except for the spherical concave shape of the shower, the shower was carburized and quenched under the same conditions and procedures as in Example 3, and an oil running test was performed. Table ₄ shows the results. Oil running test conditions

Counterpart material: Al-Cu alloy

Testing machine: Compressor for refrigerator

Test machine operating conditions: 2 000 rpm, 2 hours,

Without using frozen gas

Bracket height change measurement: Obtain the difference between the braid height before and after the specimen is assembled. 4th garment

Table 4] ?, it is clear that the shots with lot numbers 1 to 3 are extremely stable against thermal deformation.

¾>-) ο

Example 6

The coefficient of friction (0) was measured for the defective product (tiling length 70) and the good product (transfer length 95) described in Example 3 under the following friction test conditions. .

Hi ^ ' Friction coefficient measurement conditions

Slip]? Speed: 1 S m Zsec

Partner material: A 390 disk

Lubricating oil: Refrigeration oil 1. Mixed oil of 9 parts by volume

Refueling conditions: Oil refueling

Load: 0 3 2 0

Figure 8 shows the measurement results. In Fig. 8, G and N represent non-defective products and defective products, respectively. The arrow indicates that the coefficient of friction increased sharply and seizure occurred. Fig. 8] 5. The good product (G) has a low coefficient of friction and good seizure resistance.

Example 7

With respect to the sample of mouth number 4 in Example 5, the surface treatment was further performed to determine the amount of change in the group height. Table 5 shows the results. '

5 Surface treatment Bracket height change range (m)

Table 5 shows that the height change of the 9 sets decreases with surface treatment.

Industrial applicability

According to the present invention, a swash plate type compressor having higher seizure resistance and better sliding characteristics than conventionally known showers is provided for a metal swash plate according to the present invention. It is clear that this will be done. Also, according to the present invention] 9, if the shape of the spherical concave portion of the shoe is adjusted so that the ball comes into line contact with the shoe before heat-treating the shower, the performance of the shoe becomes extremely high. Stabilize . Thus, the present invention provides a swash plate compressor that is lighter in the automotive industry. This enhances the performance and contributes to stable production of the screen.

Claims

04 32 Scope of request ''

1. The cylinder that defines the port and key inside, and the cylinder (2 :) that is arranged in the cylinder (1 :)

] 3 A spinning light alloy! ) Swash plate (5) and this swash plate

In accordance with the rotation of the plate (5), the cylinder (1 :) should be reciprocated in the direction of the rotation axis (2 :) in the bore of the cylinder (1 :).

E operatively connected to the swash plate (5 :). Fit between the stone (4 :), the swash plate (5 :) and the piston (4).

Including the held shot (3 :) and the pole (8)

! ), The shoe (3) has a hardness of Hv700 or more.

The above-mentioned show

(3) has a chamfered edge (3b) on one side (3a) facing the swash plate (5).

A part of the tool (8 :) is fitted and held on the surface (3d).

A spherical concave part (10) is formed.

Part of the mark (8) is also fitted and held in the spherical recess (10 :) inside the piston! ), A swash plate compressor in which lubricating oil is supplied in mist.

2. The shower (3 :) is immersed in the one side.

Carbon quenched or metal infiltrated, carbon steel or

The swash plate type compressor according to claim 1, which is case hardened steel.

Lesser.

3. The shower (3 :) is bearing steel or high-speed steel.] 3

斜 The swash plate type connector according to claim 1 or 2

O? I

WIPO ATI N- 604

33

Presser.

4. The rule (8) is substantially in line contact with the spherical recess (10), and the rule (8) is a spherical recess.

The radius of the circular arc (R i and E ₂ ) of the spherical recess (10) at the point of contact with (10) and at C ₂ :)

Are substantially equal to each other, and this radius (R i and R ₂ ) is the diameter of rule 8 times DO DO times larger.

(R! = R2> γD).

The swash plate compressor described in item 1 from item 1 to item 3-o

5. The center (O i or O ₂ ) of the arc having the radius (R i :) or (H ₂ :) and the contact point (C i or C ₂ )

Connecting a line (Ci Oi or C ₂ 0 ₂ :) said port, Ichiru (8)

The contact angle (0) between the central axis of the lens and 12 is 12. The swash plate compressor according to claim 6, wherein the angle is 60 ° to 60 °.

6. The above-mentioned show (3) is composed of a po

Claims 1 to 5 characterized in that at least at least one of the contact surfaces opposed to (5) is formed with a copper paint film or a film mainly composed of solid lubricant. At least the swash plate type component as described in item 1 up to item 5: °

Lesser.

7. The cylinder (3 :), in particular, the cylinder defining the inside of the cylinder (1), and the cylinder (1) are arranged in the cylinder (1) and rotated by the rotation axis (2). Ruru light alloy] 9

,

o — no ⁰ no R no 04

34

The swash plate (5) should be reciprocated in the direction of the rotation axis (2) in the cylinder (11) according to the rotation of the plate (5) and the swash plate (5). :) a operatively connected piston (4), the swash plate (5) and the fin. Including the one (3 :) and the rule (8) held between the stones (4 :)! ), A part of the rule (8 :) is fitted to the side surface (3d :) of the show (3 :) opposite to the side surface (3a) facing the swash plate (5). A spherical recess (10) is formed to hold the joints.], And part of the above-mentioned pole (8) is partially spherical inside the piston.

(10 :). In the method of manufacturing the swash plate type compressor (3) in which the lubricating oil is provided in a mist state, The plastic-processed iron-based material piece is formed into a predetermined size substantially matching the diameter and thickness of the shower (3 :), and then the spherical concave portion (10) is formed into the iron-based material. The production of a show characterized by including the steps of forming into a piece of material and carburizing or quenching.

8. The shape of the spherical concave portion before the carburizing step is as follows: (a) the rule (8 :) is substantially in line contact with the spherical concave portion (10); The radii (H i and R ₂ :) of the arc of the spherical recess (10) at the contact points (C i and C ₂ :) where the 8 :) contacts the spherical recess (10) are substantially equal to each other. Ku, in the et (c) the radius (R! and H ₂₎

Is greater than 直径 times the diameter D of the pole 8. The scope of the claim, which satisfies the conditions (a), (b) and (c) with (½R ₂ >-^ D) The method of paragraph 7.

9. The radius (R i :) or (R ₂₎ around 0 I or even One arc a 0 ₂ and the contact point (C i or straight line connecting C ₂ :) (C! 0! Or C ₂ 0 ₂ :) is the above rule (8)

The contact angle, which is the central axis of, is 12. From 60. The method described in paragraph S of the claim that is:

10. The method according to claim 7, wherein after the carburizing or quenching, the mechanical processing of the spherical recess (10) is performed to such an extent that the deteriorated layer is simply removed by carburizing or quenching. The first

10. The method according to any one of paragraphs 9 to 9.

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