JP2005042596A - Swash plate of swash plate compressor, and working method for the swash plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a swash plate of a swash plate compressor capable of securing the excellent introduction of a lubrication oil through all the periphery thereof and optionally adjusting the shape of the chamfered portion thereof by commonizing the axes of rotating centers in the chamfering of the outer peripheral surface and side surfaces of the swash plate, reducing the working man-hour of the swash plate, and shortening a working time, and a method of working the swash plate. <P>SOLUTION: In this swash plate 20 having a boss part 32 and a tilted disk part 33, the side surfaces 33a and 33b tilted at a predetermined tilt angle relative to the center axis of the boss part 32 and the outer peripheral surface 33c thereof parallel with the center axis of the boss part 32 are formed on the tilted disk part 33. A chamfer M set on the swash plate, all the periphery thereof, at a predetermined angle relative to the side surfaces is applied to an intersection between the side surfaces 33a and 33b and the outer peripheral surface 33c of the swash plate. A method for working the swash plate 20 with a tool by rotating the swash plate around its axis comprises a step for working the side surfaces 33a and 33b of the swash plate by rotating around an axis vertical to the side surfaces 33a and 33b of the tilted disk part 33 and a step for chamfering the intersection by an elliptic working by rotating the swash plate around the axis. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a swash plate used in a swash plate compressor, and a processing method of rotating the swash plate around a predetermined axis and processing with a cutting tool.
[0002]
[Prior art]
For example, a swash plate compressor used in an air conditioner for a vehicle has a swash plate that is inclined and fixed with respect to a rotating shaft moored in a mooring recess of a piston via a shoe or without a shoe. The swinging and rotating motion of the plate is converted into the reciprocating motion of the piston.
[0003]
Here, the swash plate described above is roughly divided into a boss portion having an insertion hole for inserting a shaft and an inclined disc portion having a predetermined thickness extending around the boss portion. The inclined disk portion has a side surface inclined at a predetermined angle with respect to the central axis of the boss portion, and an outer peripheral surface concentric with the boss portion and extending in the axial direction (parallel to the central axis of the boss portion). In particular, in the configuration in which the shoe is anchored to the anchoring concave portion of the piston via the shoe, the shoe is slidably brought into contact with the side surface of the inclined disk portion. Further, the outer peripheral surface of the swash plate is in contact with a bridge portion constituting the back portion of the mooring recess of the piston, thereby preventing the piston from rotating more than a predetermined angle and interfering with the swash plate.
[0004]
And especially the sharp edge of the outer peripheral surface (intersection where the crossing angle between the side surface of the inclined disk part and the outer peripheral surface becomes an acute angle) may damage the bridge part or the edge if the compressor is operated with this remaining. Fragments and wear particles that are scattered due to broken or worn parts enter between the sliding contact surfaces with the shoe and cause the swash plate to seize, so it is necessary to chamfer.
[0005]
Conventionally, this chamfering process is performed by pressing the endless sandpaper against the edge, rotating the swash plate around the axis of the boss, and synchronizing the endless sandpaper with the rocking motion of the swashplate so that it always contacts the edge of the outer peripheral surface. I was trying to move it in the axial direction.
[0006]
Also, by rotating the swash plate around an axis inclined with respect to the drive shaft, the blade of the cutting tool extends parallel to the axis and is pressed against the acute edge of the peripheral side surface (outer peripheral surface). A method of chamfering the edge of the peripheral side surface over substantially the entire circumference by one chamfering operation without moving the cutting tool in synchronization with the swinging motion of the peripheral side surface is also considered (see Patent Document 1).
[0007]
[Patent Document 1]
JP 2001-132627 A (columns 0005 to 0006, FIG. 3)
[0008]
[Problems to be solved by the invention]
However, in the former processing method, when the entire processing process using the blade of the swash plate is viewed, the following steps are necessary and the work is increased. That is, according to the former processing method, as shown in FIG. 6, the processing process of the swash plate is such that the insertion hole 100 for inserting the shaft is drilled and the swash plate 101 is disposed around the axis of the insertion hole 100. A first step (shown in FIG. 6A) of rotating one side portion 102a of the boss portion 102 and rotating the swash plate 101 around the axis of the insertion hole 100 to rotate the boss portion 102 A second step (shown in FIG. 6B) of processing the other side portion 102b and the outer peripheral surface 103, and rotating around an axis perpendicular to the side surfaces 104a and 104b of the inclined disc portion 104. , A third step (shown in FIG. 6C) for processing the side surfaces 104a and 104b, and again rotating the swash plate around the axis of the insertion hole 100 so that the processing tool 105 such as endless sandpaper is moved to the edge of the outer peripheral surface 103. (Side disk side A fourth step (shown in FIG. 6 (d)) in which one edge portion is chamfered by pressing against the outer peripheral surface and moving forward and backward in accordance with the movement of the swash plate, and the other edge by inverting the swash plate 101 Since a fifth step (shown in FIG. 6 (e)) for chamfering the portion in the same manner is required, even if the step up to the third step is an unavoidable step in processing the unique shape of the swash plate, the outer peripheral surface Since it is necessary to change the axis of rotation center or to invert the swash plate until chamfering the edge of this, the work at the time of processing increases, and the time required for the processing takes time.
[0009]
Also, in chamfering work with endless sandpaper, a large amount of abrasive grains of endless sandpaper are scattered, and if this is not completely removed, the quality of the coating performed in the next process (not shown) will be reduced, and the reliability of the compressor will be increased. There is an inconvenience to lose. For this reason, much effort has been required to remove the abrasive grains. Further, the chamfering process using the endless sandpaper has a disadvantage that the chamfered portion cannot be formed into a free shape.
[0010]
On the other hand, according to the latter method, it is possible to chamfer substantially the entire circumference of the edge by a single chamfering operation. Even in such a method, the side surface of the inclined disk portion is processed. In the process and the chamfering process, the axis of rotation center must be changed, and the adjustment work of the axis of rotation center is required in each process. Also in this configuration, since the chamfering is performed in one operation by the cutting tool extending in parallel with the axis of rotation center, the shape of the chamfered portion has no degree of freedom and can be formed into an arbitrary shape. It was difficult to process.
[0011]
In particular, the chamfer formed by this method is a portion where an acute edge is formed, that is, a top dead center of a swash plate (an inclined disc portion moored in a mooring recess when the piston is at the top dead center). In the compressor of the type in which the shoe is slidably contacted with the periphery of the swash plate over the entire circumference, the chamfered portion is not applied. There was a risk that the introduction of the lubricating oil would worsen and good sliding with the shoe would be hindered.
[0012]
The present invention has been made in view of the circumstances as described above, and provides a swash plate for a swash plate compressor capable of ensuring good introduction of lubricating oil over the entire circumference of the swash plate. In addition, a processing method for a swash plate of a swash plate compressor that can reduce the number of operations required for processing a swash plate to shorten the processing time and can arbitrarily adjust the shape of the chamfered portion is provided. The main task is to do this.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, a swash plate of a swash plate compressor according to the present invention comprises a boss portion and an inclined disc portion extending around the boss portion, and the inclined disc In a configuration in which a side surface inclined at a predetermined inclination angle with respect to the central axis of the boss portion and an outer peripheral surface parallel to the central axis of the boss portion are formed in the portion, the intersection of the side surface and the outer peripheral surface A chamfering set at a predetermined angle with respect to the side surface is applied to the part over the entire circumference (Claim 1).
[0014]
Therefore, since the chamfering set at a predetermined angle with respect to the side surface is applied to the edge of the outer peripheral surface of the swash plate over the entire circumference, the chamfered portion is also obtained even when the shoe is slidably contacted with the periphery of the swash plate It is possible to always introduce lubricating oil between the shoe and the shoe.
[0015]
Here, the chamfering set at a predetermined angle with respect to the side surface is a plurality of inclined surfaces having different angles with respect to the side surface (for example, the first with respect to the side surface) at the intersection of the side surface and the outer peripheral surface of the inclined disk portion. And an inclined surface set to an angle of (2) and an inclined surface set to a second angle larger than the first angle may be formed (claim 2). By adopting such a configuration, it becomes possible to reduce the inclination angle of the chamfered portion that shifts from the side surface over the entire phase angle of the inclined disk portion, so that the lubricating oil can be more easily introduced, and This makes it easy to remove sharp edges.
[0016]
The swash plate as described above includes a housing in which a cylinder bore is formed, a drive shaft rotatably supported by the housing, a swash plate housed in the housing and rotated integrally with the drive shaft, The present invention is suitable for use in a swash plate type compressor having a mooring recess for mooring the periphery of a swash plate through a shoe and having a piston that reciprocally slides in the cylinder bore as the swash plate rotates. 3).
[0017]
The processing method of the swash plate of the swash plate compressor according to the present invention includes a boss portion and an inclined disc portion extending around the boss portion, and the inclined disc portion includes the swash plate processing method. A swash plate of a swash plate compressor in which a side surface inclined at a predetermined inclination angle with respect to the central axis of the boss portion and an outer peripheral surface parallel to the central axis of the boss portion is rotated around a predetermined axis. In the case of processing with a cutting tool, the step of rotating the swash plate around an axis perpendicular to the side surface of the inclined disk portion to process the side surface of the swash plate, and the swash plate to the inclined disk portion And a step of chamfering the intersection of the side surface and the outer peripheral surface of the inclined disk portion by ellipse processing.
[0018]
Therefore, by rotating the swash plate about an axis perpendicular to the side surface, the side surface of the inclined disk portion and the chamfering of the edge of the outer peripheral surface can be performed. Therefore, it is not necessary to readjust the axis of rotation center between them, and the adjustment work of the axis can be reduced. Further, since the edge of the outer peripheral surface is chamfered by ellipse processing, the shape of the chamfered portion can be arbitrarily adjusted.
[0019]
Here, as the ellipse processing, the cutting tool is positioned in parallel with the side surface for forming a predetermined elliptical locus, and the side surface for forming an arbitrary chamfered shape and the side surface corresponding to the vertical position control. It is preferable that the blade is moved by position control in the parallel direction, and by moving the blade in this way, it becomes possible to give the shape of the chamfered portion more freedom (claim 5).
[0020]
Further, chamfering by ellipse processing is performed by several steps, and it is preferable to form a plurality of inclined surfaces with different angles with respect to the side surface in order to remove acute edges (Claim 6). The surface may change the ratio of the width of the inclined surface according to the phase of the inclined disk portion (claim 7).
[0021]
In the processing method as described above, the process of processing the side surface of the swash plate is divided into a process of roughing the side surface performed before the chamfering process and a process of finishing the side surface performed after the chamfering process. (Claim 8).
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, a reciprocating compressor 1 is used in a refrigeration cycle using a refrigerant as a working fluid. The compressor 1 includes a front side cylinder block 2 and a rear side assembled to the front side cylinder block 2. The cylinder block 4, the front cylinder head 6 assembled to the front side (left side in the figure) of the front cylinder block 2 via the valve plate 5, and the rear side (right side in the figure) of the rear cylinder block 4 The front cylinder head 6 and the rear cylinder head 8 cover the cylinder blocks 2 and 4 that are close to each other. Thus, the opening end side is extended and is mutually fitted. The front cylinder head 6, the valve plate 5, the front cylinder block 2, the rear cylinder block 4, the valve plate 7, and the rear cylinder head 8 are fastened in the axial direction by fastening bolts 9, and the compressor It constitutes the entire housing.
[0023]
Inside the front cylinder block 2 and the rear cylinder block 4, there is formed a swash plate storage chamber 10 which is provided by assembling the respective cylinder blocks 2 and 4, and the swash plate storage chamber 10 has a front A shaft 12 which is rotatably supported by a shaft support hole 11 formed in the side cylinder block 2 and the rear side cylinder block 4 via a radial bearing and has one end protruding from the front cylinder head 6 is disposed. A relay member 14 attached in the axial direction by a bolt 13 is fixed to a portion of the shaft 12 protruding from the front cylinder head 6, and a boss portion 6 a of the front head 6 is attached to the relay member 14 via a bearing. A driving pulley 15 that is rotatably fitted and is connected to a driving source (not shown) via a belt is fixed by means such as screws. Each cylinder block 2, 4 is formed with a plurality of cylinder bores 16 parallel to the shaft support hole 11 and arranged on the circumference centered on the shaft 12 at equal intervals. A double-ended piston 17 having heads at both ends is inserted into each cylinder bore 16 so as to be reciprocally slidable. A compression chamber 25 is defined between the double-ended piston 17 and the valve plates 5 and 7. Yes.
[0024]
A swash plate 20 that is housed in the swash plate housing chamber 10 and rotates together with the shaft 12 is fixed to the shaft 12. The swash plate 20 is rotatably supported with respect to the front side cylinder block 2 and the rear side cylinder block 4 via a thrust bearing 21, and a pair of hemispherical bodies provided so that a peripheral portion sandwiches the front and rear. It is moored to a mooring recess 23 formed at the center of the double-headed piston 17 via the shoe 22. Therefore, when the shaft 12 rotates and the swash plate 20 rotates, the rotational motion is converted into the reciprocating motion of the double-headed piston 19 via the shoe 22 and the volume of the compression chamber 25 is changed.
[0025]
Each of the valve plates 5 and 7 has a suction hole 26 opened and closed by a suction valve (not shown) provided on the cylinder block side end face, and a discharge hole 27 opened and closed by a discharge valve (not shown) provided on the cylinder head side end face. Are formed corresponding to each cylinder bore 16. The front and rear cylinder heads 6 and 8 have a suction chamber 28 for storing the working fluid supplied to the compression chamber 25 and a discharge chamber for storing the working fluid discharged from the compression chamber 25. 29 and each are provided.
[0026]
A suction chamber 28 formed in each of the cylinder heads 6 and 8 is connected to the swash plate storage chamber 10 via a low pressure passage 30, and this suction plate storage chamber 10 and a suction passage (not shown) connected thereto are connected. The working fluid is sucked from the external cycle. Each suction chamber 28 can communicate with the compression chamber 25 through the suction holes 26 of the valve plates 5 and 7.
[0027]
The discharge chamber 29 formed in each cylinder head 2 and 4 communicates with an external cycle via a high-pressure passage (not shown). Each discharge chamber 29 is formed around the suction chamber 28 and can communicate with the compression chamber 25 through the discharge holes 27 of the valve plates 5 and 7.
[0028]
Accordingly, during the suction stroke in which the volume of the compression chamber 25 increases as the piston 17 reciprocates, the working fluid is sucked into the compression chamber 25 from the suction chamber 28 via the suction hole 26, and the volume of the compression chamber 25 decreases. During the compression stroke, the working fluid compressed in the compression chamber 25 is discharged to the discharge chamber 29 through the discharge hole 27 and is pumped to the external cycle through the discharge passage.
[0029]
Incidentally, as shown in FIG. 2, the swash plate 20 has a boss portion 32 in which an insertion hole 31 for inserting the shaft 12 is formed in the center, and a predetermined extension extending around the boss portion 32 as a center. And an inclined disk portion 33 having a thickness of 5 mm.
[0030]
The boss portion 32 is provided at the center of the inclined disc portion 33, and side portions 32 a and 32 b formed at both ends in the axial direction are formed perpendicular to the shaft core of the shaft 12 so as to receive the thrust bearing 21. It has become. In addition, the inclined disk portion 33 extends in the axial direction concentric with the boss portion 32 and side surfaces 33a and 33b inclined at a predetermined angle with respect to the central axis X of the boss portion 32 (the boss portion 32). The shoe 22 is slidably brought into contact with the side surfaces 33a and 33b of the inclined disk portion 33. Further, the outer peripheral surface 33 c of the inclined disk portion 33 is in contact with the inner surface of the bridge portion 17 b that is constructed between the head portions 17 a of the double-headed piston 17 and constitutes the back portion of the mooring recess 23. Due to the contact between the outer peripheral surface 33c and the bridge portion, the piston 17 does not rotate more than a predetermined angle. The edge of the outer peripheral surface 33c (intersection of the side surfaces 33a and 33b of the inclined disk portion 33 and the outer peripheral surface 33c) is chamfered M by the method described below.
[0031]
In FIG. 3, the process of processing the swash plate 20 is shown. First, the swash plate 20 is provided with an insertion hole 31 into which the shaft 12 is inserted, and around the axis of the insertion hole 31, that is, a boss portion. The swash plate 20 is rotated around the central axis X of 32 to process one side portion 32a of the boss portion 32 (shown in FIG. 3A). Next, the swash plate 20 is reversed and rotated around the axis of the insertion hole 31 to process the other side portion 32b of the boss portion 32 and the outer peripheral surface 33c (shown in FIG. 3B). Therefore, when this stage is completed, the processing of the boss portion 32 and the processing of the outer peripheral surface 33c are completed.
[0032]
Thereafter, the workpiece (swash plate 20) is transferred to an NC machine tool as shown in FIG. 4, and as shown in FIG. 3 (c), the workpiece (swash plate 20) is inclined around an axis (Y axis) perpendicular to the side surfaces 33a and 33b. The plate 20 is rotated to perform processing of the side surfaces 33a and 33b and chamfering processing of the edge of the outer peripheral surface 33c (intersection of the side surfaces 33a and 33b of the inclined disk portion 33 and the outer peripheral surface 33c).
[0033]
Specifically, the NC machine tool is equipped with rough cutting tools 41a and 41b for roughing the side surfaces 33a and 33b of the swash plate 20, and the amount of movement is controlled in a direction perpendicular to the axial direction of the main shaft (Z-axis direction). The first tool post 41 and finishing tools 42a and 42b for finishing the side surfaces 33a and 33b of the swash plate 20 are attached, and the amount of movement is controlled in a direction (Z-axis direction) perpendicular to the axial direction of the main shaft. A second tool post 42 and a third tool post 43 provided with a cutting tool 43a for chamfering the edge of the outer peripheral surface 33c, and a chuck 44 attached to the main shaft via a collet 45. The swash plate 20 is gripped, and the side surfaces 33a and 33b of the inclined disk portion 33 are made to coincide with the Z-axis direction perpendicular to the axis of the main shaft, and around the axis line (Y axis) perpendicular to the side surfaces 33a and 33b. Rotate the swash plate 20 It is way.
[0034]
Then, as a first step, the workpiece (swash plate 20) is rotated and set at a predetermined position of the first tool post 41, and the first tool post 41 is set in the Z-axis direction (a direction parallel to the side surfaces 33a and 33b). The side surfaces 33a and 33b on both sides are roughed by the rough cutting tools 41a and 41b.
[0035]
Next, as a second step, the work (swash plate 20) is set at a predetermined position on the third tool post 43, and the work (swash plate 20) is rotated around the same axis (Y axis) as in the first step. The chamfer M is applied to the edge of the outer peripheral surface 33c by so-called ellipse machining by moving the cutting tool 43a by adding the control in the Y-axis direction to the control in the Z-axis direction.
[0036]
Specifically, the chamfer M formed at the edge of the outer peripheral surface 33c is applied over the entire periphery at the intersection of the side surfaces 33a and 33b and the outer peripheral surface 33c (see FIG. 2B), and the side surface. In order to form the bite 43a in the Z-axis direction position control according to the phase angle during one rotation for forming an elliptical locus and an arbitrary inclined chamfered shape. It is formed by being moved by the Z-axis direction position control corresponding to the Y-axis direction position control.
[0037]
And as a 3rd step, a work (swash plate 20) is set in the predetermined position of the 2nd tool post 42, a work (swash plate 20) is rotated around the same axis line (Y axis) as the 2nd step, The second tool post 42 is moved in the Z-axis direction (direction parallel to the side surfaces 33a and 33b) to finish the side surfaces 33a and 33b on both sides with the finishing tools 42a and 42b.
[0038]
Here, the chamfering process of the second step is to apply ellipse processing to the edges on both sides of the outer peripheral surface by moving the cutting tool 43a without inverting the swash plate 20, and the ellipse performed for each edge. The machining may be performed by several steps, and in this example, as shown in FIG. 5, the first step has an angle α (for example, 45 °) with respect to the side surface 33a. Chamfering is performed by moving the cutting tool 43a in the Z-axis and Y-axis directions so as to form the inclined surface S1, and then the cutting tool 43a is once separated, and an angle β (for example, different from the above angle with respect to the side surface in the secondary process) Chamfering is performed by moving the cutting tool 43a in the Z-axis and Y-axis directions so as to form an inclined surface S2 having an angle of 85 ° with respect to the side surface 33a, and the edge of the outer peripheral surface 33c has a different angle with respect to the side surface 33c. And so as to form an inclined surface S1, S2 of the plurality of (two).
[0039]
In the swash plate 20 described above, the side surfaces 33 a and 33 b of the inclined disk portion 33 are formed to be inclined at a predetermined angle with respect to the central axis of the boss portion 32, and the outer peripheral surface 33 c is parallel to the central axis of the boss portion 32. Therefore, the crossing angle between the side surfaces 33 a and 33 b and the outer peripheral surface 33 c changes according to the phase angle of the inclined disk portion 33. At the phase angle (phase angle A) where the crossing angle between the side surfaces 33a, 33b and the outer peripheral surface 33c is an acute angle, the crossing angle between the inclined surface S1 and the outer peripheral surface 33c also increases to some extent, but the side surfaces 33a, 33b and the outer peripheral surface 33c. Since the crossing angle between the inclined surface S1 and the outer peripheral surface 33c is very small at the phase angle (phase angle B) in which the crossing angle with is obtuse, it is not necessary to uniformly apply the above-described inclined surface S2 to the entire circumference. Position control in the Z-axis direction may be performed so that the width of S2 at the phase angle A is maximized and the width of S2 is gradually decreased toward the phase angle B. In such a configuration, the width and ratio of the inclined surfaces S1 and S2 formed in the chamfered portion can be continuously changed according to the phase angle of the inclined disk portion 33.
[0040]
Therefore, according to the swash plate 20 that has been chamfered as described above, the chamfer M set at a predetermined angle with respect to the side surfaces 33a and 33b is applied to the edge of the outer peripheral surface 33c of the swash plate over the entire circumference. Therefore, as shown in FIG. 1, even when the shoe 22 is slidably contacted with the periphery of the swash plate 20, it is possible to always introduce lubricating oil between the shoe 22 and the shoe 22 through the chamfered portion. Smooth sliding of the shoe is ensured over the entire circumference of 20. Further, a plurality of inclined surfaces having different angles with respect to the side surfaces 33a and 33b (an inclined surface S1 set to 45 ° with respect to the side surface and an inclined surface set to 85 ° with respect to the side surface) Since the chamfering M is performed by forming the surface S2), it is possible to reduce the inclination angle of the chamfered portion that shifts from the side surfaces 33a and 33b over the entire phase angle of the inclined disk portion 33, and lubrication. Oil becomes easy to introduce.
[0041]
Further, according to the above-described chamfering, it becomes possible to make the axis of rotation center the same during the ellipse machining for chamfering and during the machining of the side surfaces 33a and 33b of the inclined disk portion 33, and roughing the side surfaces. Thus, a series of operations such as chamfering and side finishing can be performed without changing the attachment state of the work (swash plate 20) with respect to the main shaft, and the work efficiency can be improved. Further, since the edge of the outer peripheral surface 33c is chamfered by ellipse machining by an NC machine tool, the chamfered shape of the edge of the outer peripheral surface 33c of the swash plate 20 can be formed in an arbitrary shape.
[0042]
Furthermore, the chamfering of the outer peripheral surface 33c is performed in several steps, and a plurality of inclined surfaces having different angles with respect to the side surface 33a are formed on the edge of the outer peripheral surface 33c, so that sharp edges can be more reliably eliminated. It becomes possible. In the above configuration example, chamfering is performed by forming two inclined surfaces (S1, S2) having different angles with respect to the side surface at the edge of the outer peripheral surface 33c. Chamfering may be performed, or chamfering may be performed by three or more inclined surfaces.
[0043]
【The invention's effect】
As described above, according to the present invention, in the swash plate of the swash plate compressor, chamfering having a predetermined angle with respect to the side surface is performed over the entire circumference at the intersection between the side surface of the inclined disk portion and the outer peripheral surface. Therefore, it is possible to ensure good introduction of lubricating oil over the entire circumference of the swash plate, and even when the shoe is slidably contacted with the periphery of the swash plate, It is possible to ensure sliding.
[0044]
Also, in the process of processing the swash plate of the swash plate compressor, the step of rotating the swash plate about the axis perpendicular to the side surface of the inclined disk portion and processing the side surface of the swash plate, The process includes the step of chamfering the intersection between the side surface of the inclined disk portion and the outer peripheral surface by ellipse processing and the outer peripheral surface. The edge chamfering can be performed by rotating around a common axis, and the time required for adjusting the axis of the rotation center can be reduced to shorten the machining time.
[0045]
Moreover, since the edge of the outer peripheral surface is chamfered by ellipse processing, the shape of the chamfered portion can be arbitrarily adjusted. For example, when the ellipse processing is performed by adding the control in the direction perpendicular to the control in the direction parallel to the side surface of the inclined disk part, the degree of freedom in forming the chamfered shape is further increased. In addition, when chamfering by ellipse processing is performed in several steps and a plurality of inclined surfaces having different angles with respect to the side surface are formed, the edge formed at an acute angle must be surely removed. Is possible.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an example of a swash plate compressor.
2 is a diagram showing a swash plate used in FIG. 1. FIG. 2 (a) is a side view of the swash plate, and FIG. 2 (b) is a view perpendicular to the side surface of the inclined disk portion. It is the figure seen from the axial direction which becomes.
FIG. 3 is a diagram for explaining a process of a swash plate processing method according to the present invention.
FIG. 4 is a diagram for explaining an outline of an NC machine tool.
FIG. 5 is a diagram for explaining a chamfering method by ellipse processing.
FIG. 6 is a diagram for explaining the steps of a conventional swash plate processing method.
[Explanation of symbols]
1 Swash plate compressor
2 Front cylinder block
4 Rear cylinder block
5,7 Valve plate
6 Front cylinder head
8 Rear cylinder head
12 Drive shaft
14 Discharge chamber
16 cylinder bore
17 piston
17b Bridge part
20 Swash plate
23 Mooring recess
32 Boss
33 Inclined disc
33a, 33b side
33c Outer peripheral surface
S1, S2 inclined surface
M Chamfer

Claims (8)

A boss portion and an inclined disk portion extending around the boss portion; and a side surface inclined to the inclined disk portion at a predetermined inclination angle with respect to a central axis of the boss portion; In the swash plate of the swash plate compressor in which the outer peripheral surface that is parallel to the central axis of the boss portion is formed,
A swash plate for a swash plate compressor, wherein a chamfer set at a predetermined angle with respect to the side surface is applied to the intersection of the side surface and the outer peripheral surface over the entire circumference. 2. The swash plate compression according to claim 1, wherein the chamfering set at a predetermined angle with respect to the side surface is formed by forming a plurality of inclined surfaces having different angles with respect to the side surface at the intersecting portion. Machine swash plate. The swash plate compressor includes a housing in which a cylinder bore is formed, a drive shaft that is rotatably supported by the housing, a swash plate that is housed in the housing and rotates integrally with the drive shaft, 3. A piston according to claim 1, further comprising a mooring recess for mooring a peripheral edge via a shoe and a piston that reciprocally slides in the cylinder bore as the swash plate rotates. Swash plate of swash plate compressor. A boss portion and an inclined disk portion extending around the boss portion; and a side surface inclined to the inclined disk portion at a predetermined inclination angle with respect to a central axis of the boss portion; In a processing method in which a swash plate of a swash plate compressor in which an outer peripheral surface that is parallel to the central axis of the boss portion is formed, is rotated around a predetermined axis and processed by a cutting tool.
Rotating the swash plate around an axis perpendicular to the side surface of the inclined disk portion, and processing the side surface of the swash plate;
And rotating the swash plate around an axis perpendicular to the side surface of the inclined disk portion, and chamfering the intersection of the side surface of the inclined disk portion and the outer peripheral surface by elliptic processing. The processing method of the swash plate of a swash plate type compressor. The ellipse processing is performed by controlling the position of the cutting tool in a direction parallel to the side surface for forming a predetermined elliptical locus and the position control in a direction perpendicular to the side surface for forming an arbitrary chamfered shape. 5. The method for chamfering a swash plate of a swash plate compressor according to claim 4, wherein the swash plate is moved by position control in a parallel direction. 5. The swash plate compressor according to claim 4, wherein the chamfering by the ellipse processing is performed by several steps and forms a plurality of inclined surfaces having different angles with respect to the side surface. Chamfering method for swash plate. The method of chamfering a swash plate of a swash plate compressor according to claim 4, wherein the plurality of inclined surfaces have a ratio of the width of the inclined surface changed in accordance with the phase of the inclined disk portion. The step of processing the side surface of the swash plate includes a step of roughing the side surface performed before the chamfering step and a step of finishing the side surface performed after the chamfering step. Processing method of compressor swash plate.

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