CN101094989A - Shoe - Google Patents
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- CN101094989A CN101094989A CN 200580045314 CN200580045314A CN101094989A CN 101094989 A CN101094989 A CN 101094989A CN 200580045314 CN200580045314 CN 200580045314 CN 200580045314 A CN200580045314 A CN 200580045314A CN 101094989 A CN101094989 A CN 101094989A
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Abstract
Themispherical shoe 4 is equipped with a sliding surface 4A which slides with a swash plate 3, and a hemispherical convex 4B. Hardening is performed by radiating a laser so that a lot of minute circles 6 may be drawn on the sliding surface 4A. Then, lapping is given to the sliding surface 4A and, finally buffing is given. Thereby, the lot of annular swelling portions 7' and concavities 8' are formed in positions of the circles 6, and further, lubricating oil passages 10' which include net-like concavities are formed in the sliding surface 4A. A hardening part is formed of the lot of above-mentioned annular swelling portions 7'. The above-mentioned annular swelling portions 7' are formed so that a ratio of an area of a total of all the above-described annular swelling portions 7' occupies in an area of the sliding surface 4A which is a hardening object domain may become 0.3 to 0.8. It is possible to provide the shoe 4 which is good in seize resistance in comparison with the past.
Description
Technical field
The present invention relates to piston shoes, relate to the piston shoes that for example are used for tilted-plate compressor, slide with swash plate in more detail.
Background technique
At present, known to lower device as tilted-plate compressor, it has rotation swash plate that freely is provided with and the piston shoes (for example patent documentation 1, patent documentation 2) with the slip surface that slides with this swash plate.
Patent documentation 1: Japanese kokai publication hei 10-153169 communique
Patent documentation 2: TOHKEMY 2002-317757 communique
Summary of the invention
But, recent under the condition of high speed, high load, and under the few condition of lubricants capacity, use above-mentioned existing tilted-plate compressor.Like this, because recently the operating condition of tilted-plate compressor is more and more harsher, so the serious wear of swash plate and piston shoes, and hot sticky (baked is paid) take place easily.
And then, in order to improve the sliding properties of existing piston shoes, the slip surface of piston shoes is carried out surface treatment or such processing is handled in modification, but because such processing, have the high shortcoming of manufacture cost of piston shoes.
In view of the foregoing, the invention provides a kind of piston shoes, it has the slip surface that slides with swash plate, on above-mentioned slip surface, form the quench section of forming by a plurality of small ridges, and, being made as S1, making the value protuberance area ratio of S2/S1 when the gross area of all ridges is made as S2 with the area in the quenching subject area that will form above-mentioned ridge is 0.3～0.8 mode, forms above-mentioned ridge.
According to such formation, can obviously find out from test result described later, the compared with prior art good piston shoes of sintering resistance can be provided.
Description of drawings
Fig. 1 is the sectional view of expression one embodiment of the invention.
Fig. 2 is the plan view of the slip surface of piston shoes shown in Figure 1.
Fig. 3 is the enlarged view of the major component in the manufacture process of piston shoes shown in Figure 2.
Fig. 4 is the enlarged view of the major component of Fig. 3.
Fig. 5 is the sectional view along the V-V line of Fig. 4.
Fig. 6 is the sectional view along the major component of the IV-IV line of Fig. 2.
Fig. 7 is the amplification plan view of the major component of Fig. 6.
Fig. 8 is the figure of illustration protuberance area ratio.
Fig. 9 is the figure of the test result of expression prior art and present embodiment.
Figure 10 is the plan view of the slip surface 4A of expression another embodiment of the present invention.
Figure 11 is the plan view of the slip surface 4A of expression another embodiment of the present invention.
Figure 12 is the plan view of an expression embodiment's more of the present invention slip surface 4A.
Figure 13 is the expression also enlarged front view of the major component of an embodiment slip surface of the present invention.
Figure 14 is the sectional view along the XIV-XIV line of Figure 13.
Figure 15 is the enlarged front view of major component of the slip surface of expression another embodiment of the present invention.
Figure 16 is the plan view of the ring-type ridge of expression another embodiment of the present invention.
Figure 17 is the plan view of the ridge of expression another embodiment of the present invention.
Figure 18 is the plan view of the ridge of expression another embodiment of the present invention.
Figure 19 is the plan view of the ridge of expression another embodiment of the present invention.
Embodiment
Below the present invention will be described in accordance with the embodiments illustrated, and in Fig. 1, sliding device 1 is arranged in the housing of tilted-plate compressor.This sliding device 1 is installed on the swash plate 3 of running shaft 2 by inclination and constitutes with a plurality of piston shoes 4 that this swash plate 3 slides.This running shaft 2 is supported in the above-mentioned housing by axle.
Swash plate 3 forms circular plate type, smooth slip surface 3A, 3A that end face conduct and the piston shoes 4 of two sides on this swash plate 3 slide.
On the other hand, the whole hemispheres that form of piston shoes 4, the slip surface 4A that slides by slip surface 3A and form hemispheric hemisphere convex surface 4B and constitute with above-mentioned swash plate 3.
In the housing of above-mentioned tilted-plate compressor, with parallel with running shaft 2 and a plurality of pistons 5 are set around the mode of this running shaft 2.Can remain on two one group piston shoes 4 in the notch 5A of the circular arc that is formed at each piston 5 one end with being free to slide, the notch 5A that makes this state is provided with in the mode of the peripheral part that wraps into above-mentioned swash plate 3, and, make the slip surface 4A that respectively organizes piston shoes 4 and the slip surface 3A butt of swash plate 3.
And if above-mentioned running shaft 2 rotates, then swash plate 3 rotates, and the both ends of the surface of swash plate 3 are that the slip surface 4A of slip surface 3A and each group piston shoes 4 slides, and thereupon, each piston 5 is advanced and retreat mobile by each group piston shoes 4 at axle direction.
Said structure is the same with existing known sliding device.
And the piston shoes 4 of present embodiment are made of ferrous material SUJ2, and the slip surface 4A of the general planar that is formed by end face forms its central side than the outer periphery convex shape of (about 2 μ m) protuberance slightly.Therefore, form the shape of when the slip surface 3A of slip surface 4A and above-mentioned swash plate 3 slides, between two slip surface 4A, 3A, introducing lubricant oil easily.
In the present embodiment, the whole slip surface 4A zone that makes piston shoes 4 is as the quenching subject area, by irradiating laser as described later, quench, improved the sintering resistance of slip surface 4A.
Promptly, Quenching Treatment operation to the slip surface 4A in the present embodiment describes, at first as Fig. 2～shown in Figure 3, the whole zone of slip surface 4A that will be the piston shoes 4 (mother metal) that go out of made with SUJ2 is as the quenching subject area, shines YAG laser in the mode of the circle 6 of retouching out a plurality of same diameter.
The diameter of setting above-mentioned each circle 6 is 0.8mm.In addition, in the whole zone of slip surface 4A, on each position of intersecting point of the imaginary parallel lines that spacing P is identical in length and breadth, be that above-mentioned circle 6 is described at the center with each intersection point.In the present embodiment, above-mentioned spacing P is set at 1.1mm, by in the mode of describing above-mentioned circle 6 to slip surface 4A irradiating laser, make the quenching width B become 0.3mm (with reference to Fig. 5).
YAG laser to above-mentioned slip surface 4A irradiation is output as 50W, adjusts convergent lens, makes the focus of above-mentioned YAG laser focus on the position of the dark 2mm in surface of slide relative face 4A, therefore is to the surface irradiation YAG laser of slip surface 4A with the state that defocuses.
Like this, each circle 6 the position on the slip surface 4A of laser exposure bulges into ring-type and forms ring-type ridge 7 as shown in Figure 4 and Figure 5, in the adjacent inner side of the radial direction of this ring-type ridge 7, forms the recess 8 of the taper that lower side narrows down.That is, by describing above-mentioned each circle mode of 6, form the ring-type ridge 7 of arc crater shape at the position of the circle 6 of laser exposure to slip surface 4A irradiating laser.And, form the netted recess 10 that is interconnected and arrives the peripheral part of slip surface 4A in the radial direction outside of each ring-type ridge 7.
Has carried out than the Quenching Treatment about the hardness Hv750 increase Hv100 of the mother metal of piston shoes 4 at the position 11 of the inboard of each ring-type ridge 7 and its depth direction (more leaning on the position of upper side than dotted line 9).
On the other hand, non-quench section is annealed, is formed at the radial direction inboard of each the ring-type ridge 7 on the slip surface 4A and the foreign side position of ring-type ridge 7 (position of recess 8 and netted recess 10), about the low Hv100 of the hardness ratio mother metal of this part.
In the present embodiment, by the slip surface 4A of whole piston shoes 4 as quenching subject area and irradiating laser as described above, at first form a plurality of small ring-type ridges 7 and recess 8 and netted recess 10.
Then, once eliminate all ring-type ridges 7 on the above-mentioned slip surface 4A, make slip surface 4A become even surface, after this slip surface 4A is polished processing, finish processing by abrasive machining.
Like this, after process finishing, as shown in Figure 6, whole zone at slip surface 4A, form at each circle position (position of above-mentioned ring-type ridge 7) of 6 of having shone above-mentioned laser the ring-type ridge 7 the same with above-mentioned ring-type ridge 7 ', simultaneously, each ring-type ridge 7 ' radial direction in the same recess 8 of square one-tenth and above-mentioned recess 8 '.And, each ring-type ridge 7 ' radial direction foreign side form the oil passage 10 that the netted recess that can be circulated by lubricant oil forms '.
This is owing to adopt abrasive machining that original ring-type ridge 7 is eliminated, then it polished processing, thereby make the hardness height of its peripheral part of hardness ratio at position 11 of ring-type ridge 7 depth direction inboards, by make the high part of hardness with ring-type residual form above-mentioned ring-type ridge 7 ', recess 8 ' and oil passage 10 '.
In the present embodiment by so a plurality of ring-type ridges 7 that form ' form quench section.In addition, each recess 8 ' play a role as the reservoir of storing lubricant oil.And lubricant oil can be in oil passage 10 ' interior circulation.
In the present embodiment, as mentioned above slip surface 4A is carried out laser hardening, then carry out abrasive machining, polish processing afterwards, but the amount of cutting of grinding that slip surface 4A produces at axle direction because abrasive machining and polishing are processed is about several microns, so in fact the area of slip surface 4A does not change.
As shown in Figure 6, each ring-type ridge 7 ' height h (recess 8 ' the degree of depth) be 0.1～0.3 μ m, the Extreme breadth W of ring-type ridge 7 ' section (the radial direction size of bottom) is about 0.3mm.Promptly as the ring-type ridge 7 of quench section ' the quenching width be about 0.3mm.In addition, each ring-type ridge 7 ' the diameter of the diameter D1 at the top circle 6 during with above-mentioned laser exposure identical, be 0.8mm.In addition, as shown in Figure 7, ring-type ridge 7 ' outer diameter D L be about 1.1mm, and ring-type ridge 7 ' inside diameter D 0 be about 0.5mm.
And in the present embodiment, the area in the whole zone of the slip surface 4A of the quenching subject area when being configured to irradiating laser is S1, be located at slip surface 4A go up all ring-type ridges 7 of forming ' the gross area when being S2, with the protuberance area ratio be the value of S2/S1 be 0.3～0.8 mode form above-mentioned ring-type ridge 7 '.In other words, in the present embodiment, the ratio of the gross area of the part (ring-type ridge 7 ') that practical laser is quenched and the area (slipping the area of face 4A) of quenching subject area is 0.3～0.8.
In the above-described embodiments, the whole zone of slip surface 4A as the quenching subject area, but also can be as Figure 10～shown in Figure 12, the major component of slip surface 4A as quenching subject area A, as mentioned above, at this zone A internal exposure laser, formation ring-type ridge 7 '.At this moment, become the area of quenching subject area A around the smallest imaginary of quenching subject area A area round or that imaginary frame is interior.
In above-mentioned shown in Figure 2 this enforcement of whole slip surface 4A as the quenching subject area, circle 12 conducts that become the profile of slip surface 4A center on the smallest imaginary circle of quenching subject area.
Afterwards, by test result described later as can be known, can improve the sintering resistance of piston shoes 4 according to present embodiment.In addition, the test result of carrying out according to the present application person, in order to obtain the sintering resistance of better piston shoes 4, preferably with the raised part area ratio be 0.45～0.8 mode form ring-type ridge 7 '.
Fig. 8 be expression as the piston shoes 4 of present embodiment, above-mentioned spacing P shown in Figure 3 and ring-type ridge 7 ' inside diameter D 0 asynchronous protuberance area ratio different.
And Fig. 9 represents the test result of the sintered surface pressure that carries out to the piston shoes 4 of the present embodiment that comprises the illustrated content of above-mentioned Fig. 8 and as the piston shoes of prior art staple.
At this, for the piston shoes of prior art, on its slip surface, do not carry out laser hardening, this slip surface forms tabular surface.In addition, the piston shoes of prior art and present embodiment and all use the parts of forming by the brass material that contains Mn and Si as the swash plate of matching block.The test conditions of sintering resistance is as follows.
(test conditions)
The swash plate rotating speed: per minute increases 1000rpm, increases by 9 times: maximum (top) speed 9000rpm (circumferential speed 38m/s)
Surface pressure: preload 2.7MPa, per minute increase 2.7MPa: up to sintering
The oil amount of smoke: 0.05～0.25g/min nozzle location is fixed
Machine oil: refrigerator oil
Sintering condition: the axle moment of torsion surpasses 4.0Nm
That is, under the slip surface 4A with piston shoes 4 is crimped on state on the above-mentioned swash plate 3, increase the rotating speed of this swash plate 3 under these conditions.On the other hand, increase under these conditions, when the axle moment of torsion on being applied to swash plate 3 surpasses 4.0Nm, then be judged as and reach sintering the surface pressure of piston shoes 4 when swash plate 3 crimping.Prior art also is same in this.
The piston shoes 4 of in Fig. 9, representing present embodiment with black circle, can obtain good sintering resistance at the protuberance area ratio greater than 0.3 o'clock, particularly the protuberance area ratio is from 0.45 in 0.8 scope of the upper limit, and sintered surface pressure becomes more than the 19.1MPa, can obtain extraordinary sintering resistance.At this, the upper limit means adjacent ring-type ridge 7 ' the be formed at state on the slip surface 4A under the closeest state that does not interfere with each other.
On the other hand, in Fig. 9, represent the test result of existing staple, all below 5MPa with white circle.
Test result as shown in Figure 9 is indicated, and the piston shoes 4 and the existing product of present embodiment are compared, and have good sintering resistance.And, be appreciated that in order to obtain better sintering resistance by test result shown in Figure 9, above-mentioned ring-type ridge 7 ' area ratio be preferably 0.46～0.8.
In addition, on the slip surface 4A of the piston shoes 4 of present embodiment, form above-mentioned a plurality of ring-type ridges 7 ', simultaneously, in its radial direction square one-tenth store the recess 8 of lubricant oil ', at these recesses 8 ' interior storage lubricant oil.And, each ring-type ridge 7 ' the position of adjacent foreign side on form the oil passage 10 that constitutes by netted recess '.Therefore, can improve the load capacity of the slip surface 4A of piston shoes 4, and then the good piston shoes of wearability 4 also can be provided.
In the above-described embodiments, the subject area of the whole zone of the slip surface 4A of piston shoes 4 as usefulness laser hardening, form thereon ring-type ridge 7 ', but also the needed zone that can uprise pressure when sliding with swash plate 3 is as the subject area of usefulness laser hardening, form thereon ring-type ridge 7 '.
Promptly as shown in figure 10, also can remove in the zone of the outer circumferential side of slip surface 4A, the inboard of the imaginary circle 21 of center side as quenching subject area A, this form a plurality of ring-type ridges 7 '.In addition, also can be as shown in figure 11, the ring-type position that the big or small imaginary circle 22,23 that is used in slip surface 4A center side is divided is as quenching subject area A, this form a plurality of ring-type ridges 7 '.And then, also can be as shown in figure 12, needed part on the circumferencial direction of slip surface 4A as quenching subject area A, this form a plurality of ring-type ridges 7 '.
As these Figure 10～shown in Figure 12,,, also can provide the good piston shoes of sintering resistance 4 by making the protuberance area ratio in above-mentioned scope (0.3～0.8) even only form 7 ' time of ring-type ridge at quenching subject area A as the part of slip surface 4A.
In the various embodiments described above, form at the intersection point place of parallel lines in length and breadth each ring-type ridge 7 ', but also can be as Figure 13 and shown in Figure 14, on slip surface 4A serrated topography become each ring-type ridge 7 '.At this moment, the embodiment of the size of spacing P etc. and Fig. 3 is the same.Be that spacing P is 1.1mm, each ring-type ridge 7 ' height h (recess 8 ' the degree of depth) be 0.1～0.3 μ m, the Extreme breadth W of ring-type ridge 7 ' section (the radial direction size of bottom) is about 0.3mm.In addition, ring-type ridge 7 ' the quenching width be about 0.3mm, each ring-type ridge 7 ' the diameter D1 at top be 0.8mm.And ring-type ridge 7 ' outer diameter D L be about 1.1mm, ring-type ridge 7 ' inside diameter D 0 be about 0.5mm.
In addition, in the above-described embodiments, the circular diameter when slip surface 4A irradiating laser is identical, but also can be as shown in figure 15, to slip surface 4A irradiating laser the time, with the circular diameter of special position (middle position of Figure 15) less than the mode of the circular diameter of other position form ring-type ridge 7 '.
In addition, as shown in figure 16, also can with describe oval mode form to slip surface 4A irradiating laser ring-type ridge 7 '.And then, also can be as shown in figure 17, by in the mode of describing C shape to slip surface 4A irradiating laser, form be not closed ring ridge 7 '.
And then, also can be as shown in figure 18, with the circumference equal intervals of imaginary circle describe the mode of circular arc, form to slip surface 4A irradiating laser ridge 7 ', also can be as shown in figure 19, with distribution ridge 7 on four limits of imaginary rectangle ' mode to slip surface 4A irradiating laser.
In addition, use the raw material of SUJ2 in the above-described embodiments, but be not limited thereto, can certainly use other ferrous material as piston shoes 4.
And, also can form above-mentioned ring-type ridge or ridge by quenching to the slip surface irradiating electron beam, be used for replacing the laser hardening of above-mentioned laser exposure generation.
Claims (8)
1. piston shoes, has the slip surface that slides with swash plate, it is characterized in that, on above-mentioned slip surface, form the quench section of forming by a plurality of small ridges, and, being made as S1, making the value protuberance area ratio of S2/S1 when the gross area of all ridges is made as S2 with the area in the quenching subject area that will form above-mentioned ridge is 0.3～0.8 mode, forms above-mentioned ridge.
2. piston shoes as claimed in claim 1, it is characterized in that, above-mentioned ridge is the ring-type ridge, each ring-type ridge forms as follows, promptly after the surface of mother metal is with the mode irradiating laser of describing a plurality of small circles, abrasive machining is carried out on surface at above-mentioned mother metal, and then polishes processing thereafter.
3. piston shoes as claimed in claim 2, it is characterized in that, the radial direction inboard of above-mentioned each ring-type ridge becomes the recess that can store lubricant oil, and is formed with the oil passage of being made up of the negotiable netted recess of lubricant oil in the radial direction outside of each ring-type ridge.
4. as claim 2 or 3 described piston shoes, it is characterized in that in the scope that needs of whole slip surface or slip surface, described ring-type ridge forms flexuose or is formed on the position of intersecting point of parallel lines in length and breadth.
5. as each described piston shoes in the claim 2～4, it is characterized in that the above-mentioned diameter of a circle in the time of will be to above-mentioned mother metal irradiating laser is set as 0.8mm, and above-mentioned spacing is set as 1.1mm, and, the height of above-mentioned ring-type ridge is set as 0.1～0.3 μ m.
6. piston shoes as claimed in claim 1 is characterized in that, above-mentioned ridge forms the arbitrary shape in ellipse, C font, circular arc or the point-like.
7. as claim 1 or 6 described piston shoes, it is characterized in that above-mentioned ridge is by forming to slip surface irradiating laser or electron beam.
8. as each described piston shoes in the claim 1～7, it is characterized in that, is that 0.45～0.8 mode forms above-mentioned ridge with the raised part area ratio.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP380507/2004 | 2004-12-28 | ||
| JP2004380507A JP3925730B2 (en) | 2004-12-28 | 2004-12-28 | Shoe |
| JP130574/2005 | 2005-04-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101094989A true CN101094989A (en) | 2007-12-26 |
| CN100501156C CN100501156C (en) | 2009-06-17 |
Family
ID=36736898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005800453142A Expired - Fee Related CN100501156C (en) | 2004-12-28 | 2005-12-26 | Shoe |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3925730B2 (en) |
| CN (1) | CN100501156C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103026065A (en) * | 2010-07-28 | 2013-04-03 | 大丰工业株式会社 | Swash plate compressor |
| CN104040199A (en) * | 2011-12-22 | 2014-09-10 | 大丰工业株式会社 | Sliding member |
| CN108533705A (en) * | 2017-03-01 | 2018-09-14 | 株式会社椿本链条 | Guide block |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4829159B2 (en) * | 2007-03-29 | 2011-12-07 | 川崎重工業株式会社 | Swash plate type piston pump motor and manufacturing method thereof |
| JP5472630B2 (en) * | 2010-07-27 | 2014-04-16 | 大豊工業株式会社 | Sliding member and manufacturing method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2900467B2 (en) * | 1990-01-22 | 1999-06-02 | 大豊工業株式会社 | Manufacturing method |
| JP3298571B2 (en) * | 1999-11-26 | 2002-07-02 | 大豊工業株式会社 | Sliding device |
-
2004
- 2004-12-28 JP JP2004380507A patent/JP3925730B2/en not_active Expired - Fee Related
-
2005
- 2005-12-26 CN CNB2005800453142A patent/CN100501156C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103026065A (en) * | 2010-07-28 | 2013-04-03 | 大丰工业株式会社 | Swash plate compressor |
| CN103026065B (en) * | 2010-07-28 | 2015-12-16 | 大丰工业株式会社 | Oblique tray type compressor |
| CN104040199A (en) * | 2011-12-22 | 2014-09-10 | 大丰工业株式会社 | Sliding member |
| CN104040199B (en) * | 2011-12-22 | 2015-12-02 | 大丰工业株式会社 | Slide member |
| CN108533705A (en) * | 2017-03-01 | 2018-09-14 | 株式会社椿本链条 | Guide block |
| CN108533705B (en) * | 2017-03-01 | 2022-03-08 | 株式会社椿本链条 | Guide block |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100501156C (en) | 2009-06-17 |
| JP2006183627A (en) | 2006-07-13 |
| JP3925730B2 (en) | 2007-06-06 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Granted publication date: 20090617 Termination date: 20191226 |