CN101674908B - Powder compact, sintered bearing, and process for producing the same - Google Patents
Powder compact, sintered bearing, and process for producing the same Download PDFInfo
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- CN101674908B CN101674908B CN2008800135196A CN200880013519A CN101674908B CN 101674908 B CN101674908 B CN 101674908B CN 2008800135196 A CN2008800135196 A CN 2008800135196A CN 200880013519 A CN200880013519 A CN 200880013519A CN 101674908 B CN101674908 B CN 101674908B
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- powder compact
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- jog
- dead eye
- sintered bearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/14—Special methods of manufacture; Running-in
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/06—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of threaded articles, e.g. nuts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/201—Composition of the plastic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F2003/026—Mold wall lubrication or article surface lubrication
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2220/00—Shaping
- F16C2220/20—Shaping by sintering pulverised material, e.g. powder metallurgy
Abstract
A powder compact which gives a sintered bearing having excellent adhesion to a resinous coating layer; a sintered bearing obtained by sintering the powder compact; and processes for producing the compact and the bearing. A raw powder (M) is compacted between a molding core rod (13) having fine core-rod-side recesses and protrusions (18) on a peripheral surface thereof and a molding die (12) to form a powder compact (1A). Thus, the fine core-rod-side recesses and protrusions (18) are transferred to the bearing bore of the powder compact (1A). Namely, a powder compact (1A) having the fine recesses and protrusions can be produced. This powder compact (1A) is sintered to give a sintered bearing. A resinous coating layer is formed on the wall of the bearing bore having fine recesses and protrusions of this sintered bearing. Thus, a sintered bearing having excellent adhesion to the resinous coating layer can be produced.
Description
Technical field
The present invention relates to a kind of powder compact (powder compact) and sintered bearing and manufacture method thereof.
Background technology
This kind sintered bearing is, will be by powder forming device with metal as the material powder compression molding of main component and form powder compact, and this powder compact sintering is formed sintered body by sintering furnace.
And such sintered bearing not only has stable quality and can utilize a large amount of productions and make, and can also use the material that is difficult to form in the melting material, in addition, has the plurality of advantages that can make porous plastid etc.
Utilize such characteristic, can make can similarly ooze out the lubricating oil in the pore that is absorbed in porous plastid from the surface oiliness bearing (for example, patent documentation 1), and do not need the dry bearing (dry friction bearing) etc. of lubricating oil owing in material powder, contain the good fluoride resin material of lubricity etc., can reduce the work of lubricating oil replenishing and can be configured in place of fuel feeding difficulty etc., be widely used since in the past.
In addition, as the parts that the surface of slide unit carried out coating, known have a resin-coated technology (for example, patent documentation 2) of implementing to contain kollag, and resinous coat enters in the pore of sintered bearing main body and can carry out the high resinous coat of adaptation (for example patent documentation 3).
Patent documentation 1: Japanese kokai publication hei 6-173953 communique
Patent documentation 2: Japanese kokai publication hei 8-109352 communique
Patent selected works 3: TOHKEMY 2004-108461 communique
As above-mentioned patent documentation 3, sintered alloy is because have pore on the surface, so in excellence aspect the adaptation of resinous coat etc.In addition, concavo-convex if the surface of the sintered alloy behind sintering forms by machining, then can in long-term the use, prevent resin-coated peeling off, can improve adaptation.
But, increase manufacturing process respectively and cause the problem that productivity reduces and cost rises when existing in sintered alloy enforcement machining.
Summary of the invention
The present invention proposes in order to solve such problem points, its purpose be to provide a kind of powder compact of the sintered bearing that can obtain resin-coated adaptation excellence and sintered bearing with and manufacture method.
The powder compact with dead eye of powder compact of the present invention for filling material powder and this material powder pressurization is shaped at the filling part of metal mould for formation wherein, has trickle jog on above-mentioned dead eye.
In addition, the height of above-mentioned jog is 5～40 μ m.
In addition, powder compact of the present invention forms for above-mentioned powder compact is carried out sintering.
In addition, in above-mentioned sintered bearing, on above-mentioned dead eye, resinous coat is set.
In addition, the manufacture method of powder compact of the present invention is, fill material powder and this material powder pressurization is shaped at the filling part of metal mould for formation and have the powder compact of dead eye, afterwards it is carried out sintering and forms sintered bearing, wherein, on the above-mentioned dead eye of above-mentioned powder compact, form trickle jog.
In addition, the height of above-mentioned jog is 5～40 μ m.
In addition, the manufacture method of sintered bearing of the present invention is, fill material powder and this material powder pressurization is shaped at the filling part of metal mould for formation and have the powder compact of dead eye, this powder compact is carried out sintering and forms sintered bearing, wherein, carry out sintering after on the dead eye of above-mentioned powder compact, forming trickle jog.
In addition, the height of above-mentioned jog is 5～40 μ m.
In addition, be on the above-mentioned dead eye of above-mentioned sintered bearing, resin-coated manufacture method to be set.
In addition, it is following manufacture method, between the shaping that has trickle core bar side jog on the outer peripheral face is with core bar and molding die, forms powder compact by the compression material powder, thereby above-mentioned trickle core bar side jog is transferred on the dead eye of above-mentioned powder compact.
In addition, be following manufacture method, after above-mentioned compression, extract above-mentioned powder compact with above-mentioned core bar, by the elastic recoil of the powder compact after extracting and can extract above-mentioned core bar from above-mentioned dead eye from above-mentioned molding die.
According to above-mentioned formation, in powder compact, on dead eye, be provided with trickle jog, so can be by this powder compact is carried out sintering obtains to have trickle jog on dead eye sintered body.
And, make by trickle jog and the adaptation excellence that is arranged on coating on the dead eye etc.
In addition, according to above-mentioned formation, become the sintered body that on dead eye, has trickle jog.
In addition, according to above-mentioned formation, can obtain the sintered bearing of resin-coated adaptation excellence.
In addition,, in powder compact, on dead eye, be provided with trickle jog, so can be produced on the sintered body that has trickle jog on the dead eye by this powder compact is carried out sintering according to above-mentioned formation.
In addition, according to above-mentioned formation, can be manufactured on the sintered body that has trickle jog on the dead eye.
In addition, according to above-mentioned formation, can make sintered bearing with resin-coated adaptation excellence.
In addition, according to above-mentioned formation, when the compression molding of powder compact core bar side jog is transferred on the powder compact, therefore the shaping for jog does not need to carry out machining etc., can enhance productivity.
In addition,, can utilize the elastic recoil of powder compact and extract powder compact, can utilize common compression molding operation on dead eye, to form trickle jog from core bar according to above-mentioned formation.
In addition, according to above-mentioned formation, the height of above-mentioned jog is 5～40 μ m, if less than 10 μ highly, then the degree of depth of jog is little, therefore can not obtain sealing property fully, on the other hand, the side that preferred heights is big, but if surpass 40 μ m, then might diminish extracting based on elastic recoil.
Description of drawings
Fig. 1 is the cutaway view of metal mould for formation in the filling work procedure of expression embodiments of the invention 1.
Fig. 2 is the cutaway view of metal mould for formation in the compression section of expression embodiments of the invention 1.
Fig. 3 is the cutaway view of extracting the metal mould for formation in the operation of expression embodiments of the invention 1.
Fig. 4 is the cutaway view of extracting the metal mould for formation in the operation of expression embodiments of the invention 1, and the state of powder compact is discharged in expression.
Fig. 5 is the amplification view of the core bar side jog of expression embodiments of the invention 1.
Fig. 6 is the cutaway view of the sintered bearing that the part is amplified of expression embodiments of the invention 1.
Fig. 7 is the powder compact of expression embodiments of the invention 2 and the stereogram of processing apparatus.
Fig. 8 is the amplification view of pith of the processing apparatus of expression embodiments of the invention 2.
Fig. 9 is the cutaway view of the powder compact of expression embodiments of the invention 3, and Fig. 9 (A) is a cutaway view, and Fig. 9 (B) is the amplification view of pith.
Figure 10 is the cutaway view of the powder compact of expression embodiments of the invention 4, and Figure 10 (A) is a cutaway view, and Figure 10 (B) is the amplification plan view of pith.
Figure 11 is the cutaway view of metal mould for formation in the compression section of expression embodiments of the invention 5.
Figure 12 is the amplification view of the core bar side jog of expression embodiments of the invention 5.
Figure 13 is that the master of the core bar of expression embodiments of the invention 6 looks key diagram.
Figure 14 is that the master of the core bar of expression embodiments of the invention 7 looks key diagram.
Description of reference numerals
1 sintered bearing
The 1A powder compact
2 bearing main bodies
3 dead eyes
4 jogs
5 resinous coats
11 metal mould for formation
12 molding dies
13 are shaped uses core bar
14 low punches
15 upper punch
16 filling parts
17 outer peripheral faces
18 core bar side jogs
31 jogs
41 jogs
58,68,69 core bar side jogs
The specific embodiment
Explain among the present invention preferred embodiment with reference to accompanying drawing.In addition, the following embodiment of explanation and be not used in and limit the content of the present invention that claims are put down in writing.In addition, below formation whole of explanation be not defined as of the present invention must important document.In each embodiment, can record and narrate sintered bearing and its manufacture method respectively by adopt sintered bearing and its manufacture method that obtains not have with different in the past new sintered bearings and its manufacture method in the past.
Embodiment 1
Below, if explanation embodiments of the invention, then Fig. 1～Fig. 6 represents embodiments of the invention 1, as shown in the drawing, sintered bearing 1 is provided with dead eye 3 and forms general cylindrical shape on bearing main body 1, described bearing main body 1 by in inside and the sintered alloy of surface with porous plastid of emptying aperture (pore) form, in above-mentioned dead eye 3, insert logical and use the external diameter rotating shaft (not shown) littler than dead eye 3.And, be provided with trickle jog 4 at the inner peripheral surface of dead eye 3, on this jog 4, resinous coat is set.
One example of the manufacture method of above-mentioned sintered bearing 1 then, is described.Sintered alloy 1 is, the material powder M press molding of Cu-Su-C class and Fe class etc. is formed powder compact 1A, with its sintering, forms thereby correct shape as required afterwards.
Fig. 1～Fig. 5 represents metal mould for formation 11, the figure shows the situation by material powder M press molding powder compact 1A.As shown in the drawing, the metal mould for formation 11 of shaping that is used for powder compact 1A, has molding die 12, is shaped with core bar 13, low punch 14 and upper punch 15 to being direction of principal axis (stamping machine up and down direction of principal axis) with upper and lower.Mould 12 is roughly drum, and the core bar 13 of substantial cylindrical shape is positioned at this mould 12 and coaxial with it.Low punch 14 is roughly drum, moves up and down from the below to be entrenched in freely between mould 12 and the core bar 13.Upper punch 15 is the general cylindrical shape shape, moves up and down freely from the top and insert to take off to be entrenched in freely between mould 12 and the core bar 13.And, the filling part 16 of formation upper opening between mould 12 and core bar 13 and low punch 14, the outer peripheral face 17 of above-mentioned core bar 13 forms above-mentioned dead eye 3.
On the outer peripheral face 17 of above-mentioned core bar 13, corresponding with above-mentioned dead eye 3 positions, by trickle core bar side jogs 18 of formation such as machinings.This routine jog 18 alternately is formed with the shape of convex portion 19 with the concave portion 20 of the section triangle of establishing in week of the section triangle of establishing in week for the length direction along core bar 13, the outside dimension Dg of the outer end of convex portion 19 is bigger than the outside dimension D of above-mentioned outer peripheral face 17, the outside dimension Dn of the inner of concave portion 20 is littler than above-mentioned outside dimension D, and making the height H for 1/2nd jog 18 of the difference of above-mentioned outside dimension Dg and outside dimension Dn is about 10～40 μ m.At this moment,, therefore can not obtain sealing property fully if then the degree of depth of the jog 4 of sintered bearing 1 is little for height H less than 10 μ, on the other hand, the side that preferred size is big, but if, then might diminish extracting based on elastic recoil described later above 40 μ m.
And, in filling work procedure shown in Figure 1, in above-mentioned filling part 16, fill material powder M, and in compression section shown in Figure 2, the material powder M in the filling part 16 is pressurizeed and compression molding powder compact 1A by upper and lower drift 15,14, thereby the trickle jog 18 of core bar 13 is transferred on the dead eye 3 of powder compact 1A, forms jog 4.And then, extracting in the operation of joining therewith, as shown in Figure 3, upper punch 15 relatively rises and mould 12 relatively descends with respect to core bar 13 and low punch 14 to the top of mould 12, thereby discharge powder compact 1A in mould 12, then powder compact 1A is by elastic recoil and hole enlargement slightly.Thus, descend and can extract core bar 13 from powder compact 1A as illustrated in fig. 4, can on the dead eye 3 of the powder compact 1A that discharges, form jog 4 by powder compact 1A hole enlargement and core bar 13.
In addition, there are the size of powder compact 1A and molding condition relevant, by elastic recoil, the internal diameter size hole enlargement about 0.2% of the dead eye 3 of powder compact 1A.
Of the present invention being characterized as before powder compact 1A is shaped back, sintering, forms jog 4 on dead eye 3.
With the powder compact 1A sintering that forms in this wise, form above-mentioned sintered bearing 1 as sintered alloy.And, on the dead eye 4 of this sintered bearing 1, implement resinous coat and form resinous coat 5.In addition, as shown in Figure 5, before implementing resinous coat, implement lead angle and form chamfered corners 6 at the outer peripheral face of sintered bearing 1 and two vertex angle parts of dead eye 3 as required.
Especially, be preferably fluoride resin as resinous coat 5, as this fluoride resin, illustration has polyflon (PTFE (teflon (registration mark)), tetrafluoroethene-perfluorinated alkoxy vinyl ether copolymer (PFA (teflon (registration mark)) or tetrafluoraoethylene-hexafluoropropylene copolymer (FEP (teflon (registration mark)) etc.
In addition, resinous coat can use kollag coating, and this kollag coating is the kollag particulate to be dispersed in large quantities adhesive resin is dissolved in kollag coating in the binder solution in the solvent.As adhesive resin, exemplified polyamidoimide, epoxy, furans, melamine, acrylic acid, polyurethane etc., if consider adaptation and mechanical strength, then preferably use the two component epoxy of ammino-complex constrictive type.As solvent, dimethylbenzene, toluene, butanols, isobutanol, isopropyl alcohol, dioxanes, butanone, n-N-methyl-2-2-pyrrolidone N-etc. have been exemplified.As kollag, illustration has PTFE (teflon (registration mark)), PFA (teflon (registration mark)), FEP (teflon (registration mark)), C (graphite), MoS2 (molybdenum bisuphide), BN (boron nitride), WF (tungsten fluoride), TiN (titanium nitride) etc., these can be used alone or as a mixture.
By so on dead eye 3, resinous coat 5 being set with trickle jog 4, can implement resinous coat at an easy rate, and can not peel off for a long time, can obtain high adaptation.In addition, in this embodiment, can side by side form jog 4, therefore make productivity improve with the compression molding operation of powder compact 1A.
And, after being provided with resinous coat 5, carry out the pressure-sizing processing of sintered bearing 1 as required.
In present embodiment so, corresponding with technical scheme, be a kind of powder compact 1A, be the powder compact 1A that in the filling part 16 of metal mould for formation 11, fills material powder M and this material powder M press molding is formed with dead eye 3, wherein, on dead eye 3, has trickle jog 4, so in powder compact 1A, on dead eye 3, be provided with trickle jog 4, so by this powder compact 1A sintering can be obtained to have the sintered body of trickle jog 4 on dead eye 3.And, by trickle jog 4, with the adaptation excellence that is arranged on coating on the dead eye 3 etc.
In addition, in such present embodiment,, become the sintered body that on dead eye 3, has trickle jog 4 because above-mentioned powder compact sintering is formed.
In addition, in such present embodiment, in above-mentioned sintered bearing 1, because on dead eye 3, be provided with resinous coat 5, so can obtain the sintered bearing 1 of the adaptation excellence of resinous coat 5.
In addition, in such present embodiment, corresponding with technical scheme, it is the manufacture method of a kind of powder compact 1A, in the filling part 16 of metal mould for formation 11, fill material powder M, this material powder M pressurization is shaped has the powder compact 1A of dead eye 3, afterwards its sintering is formed sintered bearing 1, wherein, on the above-mentioned dead eye 3 of powder compact 1A, form trickle jog 4, in powder compact 1A, on dead eye 3, be provided with trickle jog 4, so by this powder compact 1A sintering can be manufactured on the sintered body that has trickle jog 4 on the dead eye 3.
In addition, in such present embodiment, corresponding with technical scheme, be a kind of manufacture method of sintered bearing 1, in the filling part 16 of metal mould for formation 11, fill material powder M, this material powder M pressurization is shaped has the powder compact 1A of dead eye 3, this powder compact 1A sintering is formed sintered bearing 1, wherein, on the dead eye 3 of powder compact 1A, form trickle jog 4, carry out sintering afterwards, so can be manufactured on the sintered body that has trickle jog 4 on the dead eye 3.
In addition, corresponding with technical scheme in such present embodiment, on the dead eye 3 of sintered bearing 1, resinous coat 5 is set, so can make the sintered bearing 1 with the adaptation excellence of resinous coat 5.
In addition, in such present embodiment, corresponding with technical scheme, between the shaping that has trickle core bar side jog 18 on the outer peripheral face 17 is with core bar 13 and molding die 12, thereby material powder M compression is formed powder compact 1A to be transferred to trickle core bar side jog 18 on the dead eye 3 of powder compact 1A, so when the compression molding of powder compact 1A, core bar side jog 18 is transferred on the powder compact 1A, therefore the shaping for jog 4 does not need machining etc., can enhance productivity.
In addition, in such present embodiment, corresponding with technical scheme, after above-mentioned compression, extract powder compact 1A with core bar 13 from molding die 12, and can be by the elastic recoil of the powder compact 1A after extracting and extract core bar 12 from dead eye 3, so can utilize the elastic recoil of powder compact 1A to extract powder compact 1A in this wise, can utilize common compression molding operation on dead eye, to form trickle jog from core bar 13.
Effect as embodiment, in being scope about 10～40 μ m, the height H of jog 18 can obtain to be suitable for to make and the effect of adaptation excellence, if height H less than 10 μ, then the degree of depth of the jog 4 of sintered bearing 1 is little, therefore can not obtain sealing property fully, on the other hand, if surpass 40 μ m, then might diminish extracting based on elastic recoil.In addition,, then can obtain the effect of excellent in sliding property, and obtain effect with respect to excellent in te pins of durability such as corrosion if in resinous coat 5, use fluoride resin.
Fig. 7 and Fig. 8 represent embodiments of the invention 2, omit its detailed explanation at the identical symbol of part mark identical and be described with the foregoing description 1, in this embodiment, above-mentioned metal mould for formation 11 forms the powder compact 1A that does not have jog except not having to be identical formation with the foregoing description 1 the core bar side jog on the core bar 13 by this metal mould for formation 11.On the dead eye 3 of this powder compact 1A, form above-mentioned jog 4 by processing apparatus 21.In addition, identical with embodiment 1, after the shaping of powder compact 1A, before the sintering, on dead eye 3, form jog 4.
Above-mentioned processing apparatus 21 has for roughly cylindric and can insert the rotary body 22 that leads in above-mentioned dead eye 3, become the guiding groove 23 of length direction in the peripheral shape of this rotary body 22, the sword body 24 that can move on the Zhou Fangxiang of rotary body 22 is set in this guiding groove 23.Above-mentioned sword body 24 has the sliding part 25 of the roughly certain width that slides in above-mentioned guiding groove 23, be provided with the sharp-pointed portion 26 of cross section general triangular at the tip of this sliding part 25, is provided with sword body jog 27 in this sharp-pointed portion 26.This blade tip jog 17 alternately is formed with the shape of the concave portion 29 of the convex portion 28 of section triangle and section triangle for the length direction along sword body 24, and the height H that makes convex portion 28 and concave portion 29 is about 10～40 μ m.
And, by making sword body 24 move and can insert the dead eyes 3 that lead in powder compact 1A by processing apparatus 21 to the bottom side of guiding groove 23, in slotting wildcard postpone, make sword body 24 to the periphery side shifting, and make sword body 24 dead eye 6 of nipping, thereby can on dead eye 3, form above-mentioned jog 4, after formation at rotation processing apparatus 21 under this state, by making sword body 24 move once more it is not contacted with jog 4, and can extract processing apparatus 21 to the bottom side of guiding groove 23.In addition, also can fix processing apparatus 21 and make powder compact 1A rotation.
In such present embodiment, corresponding with technical scheme, be a kind of powder compact 1A, be in the filling part 16 of metal mould for formation 11, to fill material powder M, powder compact 1A with this material powder M press molding with dead eye 3, on dead eye 3, have trickle jog 4, thus trickle jog 4 in powder compact 1A, on dead eye 3, be provided with, so by this powder compact 1A sintering can be obtained to have the sintered body of trickle jog 4 on dead eye 3.And, by trickle jog 4, with the adaptation excellence that is arranged on coating on the dead eye 3 etc.
In addition, in such present embodiment, because with above-mentioned powder compact 1A sintering, so become the sintered body that on dead eye 3, has trickle jog 4.
In addition, in such present embodiment, in above-mentioned sintered bearing 1, on dead eye 3, be provided with resinous coat 5, so can obtain the sintered bearing 1 of the adaptation excellence of resinous coat 5.
In addition, in such present embodiment, corresponding with technical scheme, be the manufacture method of a kind of powder compact 1A: in the filling part 16 of metal mould for formation 11, fill material powder M, this material powder M pressurization is shaped has the powder compact 1A of dead eye 3, afterwards its sintering is formed sintered bearing 1, wherein, on the above-mentioned dead eye 3 of powder compact 1A, form trickle jog 4, in addition, in the filling part 16 of metal mould for formation 11, fill material powder M, this material powder M pressurization is shaped has the powder compact 1A of dead eye 3 and this powder compact 1A sintering is formed sintered bearing 1, wherein, on the dead eye 3 of powder compact 1A, form trickle jog 4, carry out sintering afterwards, in addition, on the dead eye 3 of sintered bearing 1, resinous coat 5 is set, so so after the shaping of powder compact 1A, on dead eye 3, form jog 4 before the sintering, so obtain the effect/effect identical with the foregoing description 1.
Especially, form the formation of jog 4 on the dead eye 3 of the powder compact 1A of employing before carrying out sintering, on sintered bearing 3, do not implement machining, with the state formation jog 4 of powder compact 1A, so can easily carry out this processing as sintered alloy.
In addition, in such present embodiment, corresponding with technical scheme, it is the manufacture method of a kind of powder compact 1A, in the filling part 16 of metal mould for formation 11, fill material powder M, this material powder M pressurization is shaped has the powder compact 1A of dead eye 3, afterwards its sintering is formed sintered bearing 1, wherein, on the dead eye 3 of powder compact 1A, form trickle jog 4, in addition, on the dead eye 3 of powder compact 1A, form trickle jog 4, carry out sintering afterwards, in addition, on the dead eye 3 of sintered bearing 1, resinous coat 5 is set, so obtain the effect/effect identical with the foregoing description 1.
In addition, the effect of embodiment is, processing apparatus 21 has the rotary body that can be inserted into rotatably in the dead eye 22 and can be arranged on the sword body 24 on this rotary body 22 movably and be arranged on the blade tip jog 27 that forms jog 4 on dead eye 3 on this sword body 24 along Zhou Fangxiang, so can use this processing apparatus 21 easily to form jog 4 on the dead eye 3 of powder compact 1A.
Fig. 9 represents embodiments of the invention 3, the identical symbol of mark on the part identical and omit its detailed explanation and be described with the various embodiments described above, in this embodiment, be the variation of the core bar side jog that on above-mentioned core bar 13, is provided with, alongst establish the cross section week in the periphery of core bar 13 and be curved prominent bar (not shown) roughly across set interval.In addition, as the above-mentioned set 1mm that is spaced apart, the width of the core bar length direction of prominent bar is 300 μ m roughly, and the degree of depth is 10 μ m～40 μ m roughly, is preferably about 10～20 μ m.
Thereby, on the bearing surface 3 of the powder compact 1A that is transferred above-mentioned prominent bar, form trickle jog 31, this jog 31 across the interval K of 1mm roughly and to form the cross section be curved concave portion 32, is a convex portion 33 along the length direction of dead eye 3 between this concave portion 32,32.And the width W of above-mentioned concave portion 32 is 300 μ m roughly, and degree of depth F is 10 μ m～40 μ m roughly, is preferably about 10～20 μ m.
In addition, above-mentioned concave portion 32 also can form by above-mentioned processing apparatus 21, at this moment, can make the sword body jog 27 of above-mentioned processing apparatus 21 be and above-mentioned jog 31 corresponding shape.
In such present embodiment,, obtain the effect/effect identical with the various embodiments described above because on the dead eye 3 of powder compact 1A, have trickle jog 31.
Figure 10 represents embodiments of the invention 4, the identical symbol of mark on the part identical and omit its detailed explanation and describe with the various embodiments described above, in this embodiment, it is the variation of the core bar side jog of setting on above-mentioned core bar 13, roughly equally spaced form the vertical prominent bar (not shown) of length direction at the periphery circumferencial direction of core bar 13, should be roughly the curved surface shape in vertical cross section of dashing forward bar, the width of its circumferencial direction is 300 μ m roughly, the degree of depth is 10 μ m～40 μ m roughly, is preferably about 10～20 μ m.
Thereby, on the bearing surface 3 of the powder compact 1A that is transferred above-mentioned vertical prominent bar, form trickle jog 41, this jog 41 is, across the interval K of 1mm roughly and form the curved concave portion 42 in cross section, is convex portion 43 along the Zhou Fangxiang of dead eye 3 between this concave portion 42,42.And the width of above-mentioned concave portion 42 is 300 μ m roughly, and degree of depth F is 10 μ m～40 μ m roughly, is preferably about 10～20 μ m.
In addition, above-mentioned concave portion 42 also can form by above-mentioned machining.Therefore in addition, in this embodiment, concave portion 42 forms parallel with the length direction of dead eye 3, and when core bar 13 was extracted powder compact 1A, the vertical prominent bar of core bar 13 and the concave portion 42 of powder compact 1A were not interfered.
In such present embodiment,, obtain the effect/effect identical with the various embodiments described above because on the dead eye 3 of powder compact 1A, have trickle jog 41.
Figure 11 and Figure 12 represent embodiments of the invention 5, the identical symbol of mark on the part identical and omit its detailed explanation and be described with the various embodiments described above, in this embodiment, it is the variation of the core bar side jog that on the outer peripheral face of above-mentioned core bar 13, is provided with, on the periphery of core bar 13, be processed to form trickle jog 58 by discharge, this trickle jog 58 is random concavo-convex, form trickle jog by the trickle jog 58 of transfer printing on the dead eye 3 of powder compact 1A, the part of the jog that this is trickle is a matsurface.In addition, the height of jog is random, but identical with embodiment 1, is preferably 10 μ m～40 μ m, at this moment, the part of less than 10 μ can be arranged also.
In such present embodiment, because on the dead eye 3 of powder compact 1A, have trickle jog, and has core bar side jog 58, so obtain the effect/effect identical with the various embodiments described above.
Figure 13 represents embodiments of the invention 6, the identical symbol of mark on the part identical and omit its detailed explanation and be described with the various embodiments described above, in this embodiment, it is the variation of the core bar side jog that on the outer peripheral face of above-mentioned core bar 13, is provided with, on the periphery of core bar 13, form trickle jog 68, this trickle jog 68 is the shape that the convex portion 19 of above-mentioned section triangle and the concave portion 20 of section triangle form on the direction that the length direction with respect to core bar 13 intersects.In addition, in the drawings, trickle jog 68 forms the roughly angle of 45 degree with the length direction of core bar 13.
In such present embodiment, because on the dead eye 3 of powder compact 1A, have trickle jog, and has core bar side jog 68, so obtain the effect/effect identical with the various embodiments described above.
Embodiment 7
Figure 14 represents embodiments of the invention 7, the identical symbol of mark on the part identical and omit its detailed explanation and be described with the various embodiments described above, in this embodiment, it is the variation of the core bar side jog that on the outer peripheral face of above-mentioned core bar 13, is provided with, on the periphery of the core bar 13 of the embodiment 7 that is formed with trickle jog 68, also be formed with the trickle jog 78 that intersects with above-mentioned trickle jog 68, this jog 78 is the shape that the convex portion 19 of above-mentioned section triangle and the concave portion 20 of section triangle form on the direction that the length direction with respect to core bar 13 intersects.In addition, in the drawings, trickle jog 78 be in the other direction with jog 68, forms roughly 45 angles of spending with the length direction of core bar 13.
In such present embodiment, because on the dead eye 3 of powder compact 1A, have trickle jog, and has core bar side jog 68,78, so obtain the effect/effect identical with the various embodiments described above.
In addition, the present invention is not limited to above-mentioned embodiment, can be out of shape enforcement variedly.For example, in an embodiment, in embodiment 1 grade, the jog of the concave portion with all groove shapes has been described, but also can has been helical form.In addition, in embodiment 3 and 4, the example of the jog that convex portion is bigger than concave portion width has been described, but also can have adopted the concave portion jog bigger than convex portion width.
Claims (2)
1. the manufacture method of a sintered bearing, fill material powder and this material powder pressurization is shaped at the filling part of metal mould for formation and have the powder compact of dead eye, this powder compact is carried out sintering and forms sintered bearing, it is characterized by, between the shaping that has trickle core bar side jog on the outer peripheral face is with core bar and molding die, compress material powder and form powder compact, thereby above-mentioned trickle core bar side jog is transferred on the dead eye of above-mentioned powder compact, form on the dead eye of above-mentioned powder compact highly is after the trickle jog of 10～40 μ m, extract above-mentioned powder compact from above-mentioned molding die with above-mentioned core bar, by the elastic recoil of the powder compact after extracting and extract above-mentioned core bar from above-mentioned dead eye, this powder compact of extracting behind the core bar is carried out sintering and forms sintered bearing, on the dead eye of this sintered bearing, adopt fluoride resin coating to be provided with the fluoride resin coating.
2. the manufacture method of a sintered bearing, fill material powder and this material powder pressurization is shaped at the filling part of metal mould for formation and have the powder compact of dead eye, this powder compact is carried out sintering and forms sintered bearing, it is characterized by, after forming trickle jog on the dead eye of above-mentioned powder compact, carry out sintering and form sintered bearing by the processing apparatus, on the dead eye of this sintered bearing, adopt fluoride resin coating to be provided with the fluoride resin coating, above-mentioned processing apparatus has can insert the rotary body that leads in above-mentioned dead eye, become the guiding groove of length direction in the peripheral shape of this rotary body, the sword body that forms above-mentioned jog in this guiding groove is set to and can moves on the Zhou Fangxiang of rotary body.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP235820/2007 | 2007-09-11 | ||
| JP2007235820A JP5352978B2 (en) | 2007-09-11 | 2007-09-11 | Manufacturing method of sintered bearing |
| PCT/JP2008/066358 WO2009035010A1 (en) | 2007-09-11 | 2008-09-10 | Powder compact, sintered bearing, and process for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101674908A CN101674908A (en) | 2010-03-17 |
| CN101674908B true CN101674908B (en) | 2011-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008800135196A Expired - Fee Related CN101674908B (en) | 2007-09-11 | 2008-09-10 | Powder compact, sintered bearing, and process for producing the same |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5352978B2 (en) |
| CN (1) | CN101674908B (en) |
| WO (1) | WO2009035010A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101066789B1 (en) * | 2010-11-29 | 2011-09-21 | 주식회사 넥스텍 | Sinter bearing and maufacturing method thereof |
| EP2957784B1 (en) * | 2013-02-15 | 2019-04-10 | Taiho Kogyo Co., Ltd | Sliding member |
| JP6853008B2 (en) | 2016-03-08 | 2021-03-31 | 株式会社ダイヤメット | Molding mold, molding method |
| JP6796433B2 (en) | 2016-08-18 | 2020-12-09 | 株式会社ダイヤメット | Molding mold, molding method |
| EP3712451A4 (en) * | 2017-11-15 | 2021-10-13 | Diamet Corporation | Oil impregnated sintered bearing and production method thereof |
| CN108127111A (en) * | 2017-11-22 | 2018-06-08 | 瑞安市钰易来汽摩零部件有限公司 | A kind of sintered metal bearing and its manufacture craft |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6299356B1 (en) * | 1997-03-06 | 2001-10-09 | Ntn Corporation | Hydrodynamic type porous oil-impregnated bearing |
| CN1957185A (en) * | 2004-05-27 | 2007-05-02 | Ntn株式会社 | High precision sliding bearing |
| CN101029658A (en) * | 2006-03-02 | 2007-09-05 | 日立粉末冶金株式会社 | Production method for fluid dynamic pressure sintered bearing |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3607492B2 (en) * | 1997-03-06 | 2005-01-05 | Ｎｔｎ株式会社 | Dynamic pressure type porous oil-impregnated bearing and manufacturing method thereof |
| JPH11350003A (en) * | 1998-06-12 | 1999-12-21 | Seiko Instruments Inc | Manufacture of parts |
| JP3441695B2 (en) * | 2000-03-31 | 2003-09-02 | 日本科学冶金株式会社 | Manufacturing method of sintered oil-impregnated bearing |
| JP2005098294A (en) * | 2003-08-18 | 2005-04-14 | Senju Metal Ind Co Ltd | Swash plate and method for its manufacture |
| JP2006226510A (en) * | 2005-02-21 | 2006-08-31 | Nakahara Kaseihin Kogyo Kk | Bearing |
| JP2007051705A (en) * | 2005-08-18 | 2007-03-01 | Ntn Corp | High-precision plain bearing |
| JP2007113722A (en) * | 2005-10-21 | 2007-05-10 | Matsushita Electric Ind Co Ltd | Fluid dynamic bearing device and its manufacturing method |
-
2007
- 2007-09-11 JP JP2007235820A patent/JP5352978B2/en active Active
-
2008
- 2008-09-10 CN CN2008800135196A patent/CN101674908B/en not_active Expired - Fee Related
- 2008-09-10 WO PCT/JP2008/066358 patent/WO2009035010A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6299356B1 (en) * | 1997-03-06 | 2001-10-09 | Ntn Corporation | Hydrodynamic type porous oil-impregnated bearing |
| CN1957185A (en) * | 2004-05-27 | 2007-05-02 | Ntn株式会社 | High precision sliding bearing |
| CN101029658A (en) * | 2006-03-02 | 2007-09-05 | 日立粉末冶金株式会社 | Production method for fluid dynamic pressure sintered bearing |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2001-279301A 2001.10.10 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5352978B2 (en) | 2013-11-27 |
| CN101674908A (en) | 2010-03-17 |
| WO2009035010A1 (en) | 2009-03-19 |
| JP2009068558A (en) | 2009-04-02 |
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