CN1401916A - Sintered oiliness bearing and making method therefor - Google Patents
Sintered oiliness bearing and making method therefor Download PDFInfo
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- CN1401916A CN1401916A CN02142045A CN02142045A CN1401916A CN 1401916 A CN1401916 A CN 1401916A CN 02142045 A CN02142045 A CN 02142045A CN 02142045 A CN02142045 A CN 02142045A CN 1401916 A CN1401916 A CN 1401916A
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- 238000000034 method Methods 0.000 title claims description 25
- 238000007493 shaping process Methods 0.000 claims description 96
- 239000002184 metal Substances 0.000 claims description 71
- 238000005498 polishing Methods 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 20
- 238000005245 sintering Methods 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000004513 sizing Methods 0.000 abstract description 8
- 229910000897 Babbitt (metal) Inorganic materials 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 49
- 239000000314 lubricant Substances 0.000 description 8
- 230000008859 change Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009740 moulding (composite fabrication) Methods 0.000 description 3
- 238000002788 crimping Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
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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
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/103—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing
- F16C33/104—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing in a porous body, e.g. oil impregnated sintered sleeve
-
- 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
- F16C33/145—Special methods of manufacture; Running-in of sintered porous bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention provides an means for sizing a intermediate runoff in the middle part of a sintered bearing metal. A sinter 17-1 provided with a straight through hole 15 having an outside diameter d1 is inserted in a second die 18 and located by an upper form 20a and a lower form 20b, and from a first end 18a a second sizing bar 21 having an outside diameter d2 is inserted to the middle of the through hole 15 so that an intermediate runoff part 22 is formed by sizing in the through hole 15. A second end periphery 25 is also expanded diametrically. The straight, second sizing bar having approximately the same diameter as d1 is inserted into the through hole 15, and the second end 18d is fitted by pressure in a straight, second sizing die having approximately the same diameter as the inside diameter D2 of the trunk part 218b so that the diametrically enlarged periphery 25 of the second end and the first end 17a are drawn in shrinkage. A small diametric sizing part is formed on the inside surface of the first 18a and the second end 18d, and the intermediate runoff part 22 having a large diameter E2 having undergone a sizing is left in the middle.
Description
Technical field
The present invention relates to a kind of sintered metal bearing and manufacture method thereof, more particularly, the present invention relates to a kind of sintered metal bearing and manufacture method thereof, described sintered metal bearing is also implemented shaping to the middle oil duct portion of the axial intermediate portion that is formed at oil-impregnated bearing.
Background technique
Because stereo set miniaturizations such as tape recorders, the used bearing of motor uses the metal bearing of single pylon support mostly.This occasion, bearing will reach certain-length, to prevent bear vibration., with the corresponding bearing of device miniaturization be the little bearing of diameter, thereby, along with bearing increases, the shaping difficulty that becomes to the aperture surface highi degree of accuracy.
In common bearing shell, the sliding contacting part with the rotating shaft sliding contact is preserved at two ends, and intermediate portion is carried out the turning hole enlargement, oil duct is set and oil duct in the middle of forming, and processes but then can't carry out oil duct to the little bearing that can not insert to instrument of diameter.Sintered alloy is suitable for making bearing shell, but does not wish to carry out turning processing, because smear metal easily embeds bearing surface, this just may become the reason that noise, abnormal wear take place.For form the device with the discontiguous oil duct of axle portion at the intermediate portion of the sintered bearing that is unsuitable for machining like this, in be published in Japan Patent open special public clear 60-54525 number, No. 2841190 communiques of special permission.But, the shaping of not mentioned middle oil duct in this former.
Summary of the invention
Sintered metal bearing is a kind of like this structure: the lubricant oil in the infiltration bearing shell is brought to slip surface by the rotation of supporting axle, is used to lubricate.Therefore, as CD player, make the spindle drive motor of the direct high speed rotating of disc one class disk, we can say does not have radial load, and therefore, function is brought into play in the lubricating structure of sintered metal bearing and rotating shaft starting simultaneously, just make rotating shaft lubricated smoothly during starting., for example, rotating shaft is subjected to belt tension and from the side pressure of other driving mechanisms etc., in the motor that specific direction is loaded, and when state of rest carries out the transition to the starting of rotation, need be lubricated to applying the load side bearing part.
, static when rotating shaft, the middle oil duct portion surface of bearing shell is in the state that does not fill up oil owing to be coated with oil processing, so embody sufficient porous matter, utilizes wicking to partially absorb the lubricant oil that oozes out when rotating from middle oil duct.That is, the load side of bearing is not lubricated when starting.Thereby, for the lubricant oil that makes the infiltration bearing shell does not come back to bearing shell after oozing out, and there is an amount of oil to remain in middle the oil duct portion of bearing shell, be preferably, (fine finishing sizing) grinds off the hole portion of centre oil duct portion by shaping.
Therefore, the objective of the invention is: a kind of sintered metal bearing and manufacture method thereof are provided, and described sintered metal bearing system carries out shaping to the middle oil duct of sintered metal bearing, grinding off hole portion, and fill-up hole portion.
In order to reach aforementioned purpose, sintered metal bearing of the present invention carries out sintering by the metal powder and constitutes, and 2 minor diameter sliding contacting parts of axle sliding contact between, form not with the aforementioned axis sliding contact, large diameter in the middle of oil duct portion, it is characterized in that, in the burn-back oil-impregnated bearing of this formation, the inner face of the sliding contact surface of aforementioned 2 sliding contacting parts and aforementioned middle oil duct is through shaping, polishing.
Like this, if the sliding contact surface of 2 sliding contacting parts and middle oil duct portion inner face, are then suitably set the roughness of aforementioned oil duct portion inner face by the shaping polishing all through the shaping polishing, then can make the lubricant oil of appropriate amount remain in the middle oil duct portion of bearing.
In aforementioned invention, be formed at the roughness of aforementioned middle oil duct inner face polishing, basic identical with the polishing of the sliding contact surface of aforementioned 2 sliding contacting parts, or its roughness ratio it is coarse, what kind of degree is the polishing roughness of oil duct portion inner face polishing roughness slide relative contacting part select in the middle of being formed at, be the use form with this bearing, service condition etc. and different should be considered settings such as its size, rotating speed, environmental conditions.
For reaching aforementioned purpose, the manufacture method of sintered metal bearing of the present invention is, metallic dust is carried out sintering, be formed on the sliding contacting part of rotary 2 minor diameters of centre bearing rotating shaft, and form therebetween not with aforementioned rotating shaft sliding contact large diameter in the middle of oil duct portion, it is characterized in that, sintered metal bearing manufacture method in described formation, formation has the burn-back body of straight shape through hole, in the middle of diameter is inserted into aforementioned through hole than the big shaping grinding tool of aforementioned through hole internal diameter from an end of aforementioned through hole, form large diameter shaping portion in the part of aforementioned through hole internal diameter, then, diameter is inserted aforementioned through hole than the little shaping grinding tool of aforementioned major diameter shaping grinding tool, make the two side portions of aforementioned through hole be crimped on the shaping grinding tool of aforementioned minor diameter, form the shaping portion of 2 minor diameters, as aforementioned sliding contacting part.
Like this, major diameter shaping grinding tool is inserted in the middle of the through hole earlier, form large diameter shaping portion, then minor diameter shaping grinding tool is inserted aforementioned through hole again, aforementioned through hole is crimped onto on the shaping grinding tool of aforementioned minor diameter, nationality is by such straightforward procedure, can make 2 sliding contacting parts sliding contact surface and aforementioned in the middle of the sintered metal bearing that all is polished of the inner face of oil duct portion through shaping.
Adopt aforementioned invention, the external diameter of the shaping grinding tool of aforementioned minor diameter is set, shaping is implemented in the other end to aforementioned through hole, form minor diameter shaping portion, and to narrow down to aforementioned minor diameter shaping grinding tool be center and this minor diameter shaping grinding tool of butt in the end that makes an aforementioned side, form the shaping portion of minor diameter, the both sides of aforementioned large diameter shaping portion form the shaping portion of minor diameter.
If the end of aforementioned major diameter shaping grinding tool is set in the position that forms opposite side in formed 2 sliding contacting parts of aforementioned through hole, then carrying out also forming the opposing party's side slip contacting part when the internal surface shaping of oil duct portion handles in the middle of aforementioned.
Again, when making sintered metal bearing, preferably use metal pattern with regulation internal diameter and 2 punch (punch die, punch), its acting in conjunction is made.
The accompanying drawing simple declaration
Fig. 1 is the profile in an embodiment's of press-powder builder longitudinal section in the sintered metal bearing manufacture method of the present invention.
Fig. 2 is the profile with the sintering body longitudinal section of Fig. 1 press-powder builder moulding.
Fig. 3 is the profile in shaping first operation one embodiment longitudinal section in the sintered metal bearing manufacture method of the present invention.
Fig. 4 is the profile in shaping second operation one embodiment longitudinal section in the sintered metal bearing manufacture method of the present invention.
Fig. 5 is with mechanism's shaping of second operation of shaping among Fig. 4 profile around knot oil-impregnated bearing longitudinal section of the present invention.
Embodiment
Below, with reference to the mode of execution of description of drawings sintered metal bearing of the present invention and manufacture method thereof.
Fig. 1 is an embodiment the sectional arrangement drawing of powder compacting builder of the manufacture method of sintered metal bearing of the present invention.
The powder pressing builder comprises: the smooth shaping of outside diameter d 1 is with straight core bar 11; Be configured in the 1st metal pattern 12 that is shaped with core bar 11 peripheries; Be used to compress and be contained in 2 punch 14a, the 14b that aforementioned shaping is used with the powders compression between core bar 11 and the 1st metal pattern 12.It is the first inside diameter 12a of minor diameter D1, the second inside diameter 12b of the major diameter D2 bigger than the 1st inside diameter 12a that the 1st metal pattern 12 has internal diameter, and the tapered portion 12c that connects this first inside diameter 12a and the second inside diameter 12b.
Feed metal powder 13 pack into outside diameter d 1 compacting shaping usefulness straight core bar 11 and have between the metal pattern 12 of the 1st inside diameter 12a, the second inside diameter 12b and tapered portion 12c, aforementioned two punch 14a, 14b move towards mutual direction of closing with core bar 11 along being shaped, with 13 compression formings of feed metal powder, form the cylindrical body 16 that metal powder is compressed shaping.Afterwards, this cylindrical body 16 just can obtain sintering body 17 shown in Figure 2, as to form the straight shape through hole 15 of internal diameter E1 through sintering.
Then this sintering body 17 is subjected to shaping first operation of sintered metal bearing manufacture method of the present invention.Fig. 3 is an embodiment the sectional arrangement drawing of the mechanism of shaping first operation.To form foregoing sintering body 17 and insert in second metal pattern 18, adjust spacer 19a, the thickness t 1 of 19b, t2, locate with the second punch 20a, 20b.And, the first shaping grinding tool 21 is inserted from the 17a of a square end portion side (see figure 2) of sintering body 17, sintering body 17 is implemented shaping for the first time.In shaping first operation that this sintering body 17 is implemented, the porous portion that is formed at middle the oil duct portion 22 on the sintered metal bearing is adjusted to required roughness, is considered to the polishing of necessary regulation, carries out the hole plug processing.The porous portion of centre oil duct portion 22, because the outside diameter d 2 of the hole enlargement part 21b of the first shaping grinding tool 21 is also big than the outside diameter d 1 that is shaped with core bar 11, therefore, only the two diameter differs partly and is polished.Therefore, nationality then can be adjusted needed polishing roughness by the outside diameter d 2 of the hole enlargement part 21b of this first shaping grinding tool 21 of suitable change.
For this reason, the first shaping grinding tool 21 comprises: diameter is than being shaped with the big slightly small diameter portion 21a of core bar 11 outside diameter d 1, and the diameter hole enlargement part 21b bigger than aforementioned small diameter portion 21a, described major diameter hole enlargement part 21b is shaped to oil duct portion 22 in the middle of the bearing shell outside diameter d 2 of internal diameter E2.The hole enlargement part 21b of outside diameter d 2 is set to the size of the porous portion of middle oil duct portion 22 being adjusted to desired roughness, and, suitably change the outside diameter d 2 of this hole enlargement part 21b, then can change porous portion roughness.
Have, as the end of the hole enlargement part 21b of large diameter shaping grinding tool, promptly the set positions of the compression distance of the first shaping grinding tool 21 (from the right side to the left be pressed into position) is for carrying out the transition to the end difference 21c of hole enlargement part 21b from small diameter portion 21a again.In bearing shell 10 (see figure 5)s, make the size that reaches axial regulation with the length L of the sliding contacting part 28b of rotating shaft (not shown) sliding contact as finished product.Promptly in the position of the other end of through hole setting formation with the opposite side 28b of 2 sliding contacting part 28a, 28b of axle sliding contact.
Second metal pattern 18 comprises: a side end 12a of internal diameter and first metal pattern 12 is identical, as the side end 18a of minor diameter D1; Internal diameter is identical with the other end 12b of first metal pattern 12, as the 18b of tube portion of major diameter D2, and the tapered portion 18c of connection 18a, 18b, the basic shape that it possesses and first metal pattern are basic identical.The aforementioned tube 18b of portion, especially in second metal pattern 18, the other end 18d hole enlargement as left end is an inside diameter D 3, the axial position of the other end 18d of second metal pattern 18 and the hole enlargement end difference 18e between the 18b of tube portion be select with the end difference 21c of the first shaping grinding tool 21 be pressed into corresponding, the essentially identical axial position in position.Thereby sintering body 17 spreads all over the axial length L as axle supporting portion 24 correspondences of bearing part effect.Its outer periderm hole enlargement becomes external diameter identical with the inside diameter D 3 of second metal pattern 18, the small diameter portion 21a of the first shaping grinding tool 21 is inserted beyond the axle sleeve part 24 of guiding, becomes internal diameter E2 through the shaping hole enlargement, forms sintering body 17-1.
To next, sintering body 17-1 carries out shaping second operation.Fig. 4 is an embodiment the longitudinal section profile of the shaping second operation mechanism of sintered metal bearing manufacture method of the present invention.The 3rd metal pattern 26 and first metal pattern, 12 basic homotypes, but its reduced is to the reduction volume of desired shaping.Diameter shrinkage part among the figure adds (' with symbol) expression.The second shaping grinding tool 27 is straight shape grinding tools of smooth same diameter, when reality is used as bearing, the shaping internal diameter size E3 (see figure 5) of the rotary sliding contacting part 28a of decision supporting axle, 28b, and, set outside diameter d 3, so that assist with effect with the 3rd metal pattern 26.Part to sliding contacting part 28a, 28b is carried out shaping, and the porous portion of sliding contacting part 28a, 28b is adjusted to required roughness.End 26a side at the 3rd metal pattern 26, punch 30a is located, guarantee that sliding contacting part 28a one side as a side end is punch 30a one side, along the second shaping grinding tool 27, the sintering body 17-1 that will form in shaping first operation inserts from the end side 26a of the 3rd metal pattern 26, move with punch 30b pushing, go into, form sintering body 17-2 to a side end 26a deep-draw.
Such as described above, with shaping shown in Figure 4 second operation, on the through hole 15 of sintering body 17-2, form and sliding contacting part 28b through the minor diameter rotating shaft sliding contact of shaping, and, in shaping first operation, nationality is carried out reduced by the end 17a side that the outside diameter d 2 of the hole enlargement part 21b in the first shaping grinding tool 21 forms, make the internal diameter E3 of its reduced to the second shaping grinding tool 27 of the butt minor diameter littler than outside diameter d 2, take this, form little with through shaping directly through the sliding contacting part 28a of rotating shaft sliding contact.
Like this, form minor diameter sliding contacting part 28a, the 28b possess in both sides shown in Figure 5 through the internal diameter E3 of shaping; Sintering bearing shell 10 to the middle oil duct portion 22 of the major diameter E2 that implements shaping in the middle of minor diameter sliding contacting part 28a, the 28b.The lubricant oil that infiltrates as usually in the sintering bearing shell 10 is used as sintered metal bearing and uses.
If make aforementioned such sintered metal bearing, can form in the middle oil duct portion 22 that then in the middle of sliding contacting part 28a, 28b, forms and meet the porous area that is ground off, stops up that load capacity, lubricant oil are difficult to get back to bearing inside.Therefore, adopt the spindle drive motor of this sintered metal bearing, during from starting, can fully implement starting smoothly under the lubricated state, and can improve the durable life-span.
In addition, the polishing roughness that oil duct portion inner face forms in the middle of aforementioned is generally than the polishing roughness height of the sliding contact surface of 2 sliding contacting parts.This is that the lubricant oil that remains in centre oil duct portion passes through bearing inside easily in sliding contact surface circuit cause.In addition, this polishing is too coarse, and the possibility of the lubricant oil of oil duct in the middle of remaining in takes place not preserve, and considers this point, preferably sets suitable roughness.And according to circumstances, the polishing of middle oil duct portion also can form the same roughness of polishing with the sliding contact surface of 2 sliding contacting parts.
In aforesaid mode of execution, the polishing of aforementioned middle oil duct portion or 2 sliding contacting parts also can change the roughness of circumferential polishing at an angle as circumferentially implementing same polishing explanation.
The invention effect
Just as described above, if adopt sintered metal bearing of the present invention, then with metal powder sintered Consist of, and 2 minor diameter sliding contacting parts of axle sliding-contact between form not and the axle sliding-contact Large diameter in the middle of in the sintered metal bearing of oil duct section, the sliding-contact of aforementioned 2 sliding contacting parts Face and aforementioned in the middle of the inner face of oil duct section all polish through shaping, therefore, suitably set aforementioned centre The inner face of oil duct section just can provide the residual appropriate amount of middle oil duct section of bearing through the roughness of shaping polishing The sintered metal bearing of lubricating oil.
If adopt sintered metal bearing manufacture method of the present invention, then to metal sintered, be formed on the center Rotary 2 the minor diameter sliding contacting parts of supporting shaft, and middle formation slided with aforementioned rotating shaft In the manufacture method of the sintered metal bearing that the large diameter middle oil of moving contact consists of, be formed with straight shape and pass through The sintered body of through hole. With diameter than the big shaping grinding tool of aforementioned through hole internal diameter from aforementioned through hole one side's The end is inserted in the middle of the aforementioned through hole, in the large diameter shaping of internal diameter part formation of aforementioned through hole Section then, inserts aforementioned through hole with diameter than the little shaping grinding tool of aforementioned major diameter shaping grinding tool, makes The aforementioned minor diameter shaping of the two side portions crimping grinding tool of aforementioned through hole then forms the shaping of 2 minor diameters Section. These 2 minor diameter shaping sections are as aforementioned sliding contacting part, and therefore, nationality at first will by adopting Major diameter shaping grinding tool is inserted in the middle of the through hole, forms major diameter shaping section, and is then, that minor diameter is whole The shape grinding tool inserts aforementioned through hole, makes the aforementioned minor diameter shaping of the two side portions crimping grinding tool of aforementioned through hole Straightforward procedure, can make 2 sliding contacting parts sliding contact surface and aforementioned in the middle of oil duct section inner face The sintered metal bearing that all is polished through shaping.
Claims (6)
1. sintered metal bearing, described sintered metal bearing carries out sintering by the metal powder and constitutes, and 2 minor diameter sliding contacting parts of axle sliding contact between, form not with the aforementioned axis sliding contact, large diameter in the middle of oil duct portion, it is characterized in that,
In the burn-back oil-impregnated bearing of this formation, the inner face of the sliding contact surface of aforementioned 2 sliding contacting parts and aforementioned middle oil duct goes to the hole through shaping, polishing.
2. sintered metal bearing as claimed in claim 1, it is characterized in that, in aforementioned sintered metal bearing, be formed at the roughness that the hole is gone in aforementioned middle oil duct inner face polishing, go to the hole basic identical with the polishing of the sliding contact surface of aforementioned 2 sliding contacting parts, or its roughness ratio it is coarse.
3. the manufacture method of a sintered metal bearing, the manufacture method system of described sintered metal bearing carries out sintering to metal powder, be formed on the sliding contacting part of rotary 2 minor diameters of centre bearing rotating shaft, and form therebetween not with aforementioned rotating shaft sliding contact large diameter in the middle of oil duct portion, it is characterized in that, in the manufacture method of described sintered metal bearing
Formation has the burn-back body of straight shape through hole,
In the middle of diameter is inserted into aforementioned through hole than the big shaping grinding tool of aforementioned through hole from an end of aforementioned through hole, form large diameter shaping portion in the part of aforementioned through hole internal diameter,
Then, diameter is inserted aforementioned through hole than the little shaping grinding tool of aforementioned major diameter shaping grinding tool, make the two side portions of aforementioned through hole be crimped on the shaping grinding tool of aforementioned minor diameter, form the shaping portion of 2 minor diameters, the shaping portion of these 2 minor diameters is as aforementioned sliding contacting part.
4. the manufacture method of sintered metal bearing as claimed in claim 3, it is characterized in that, the external diameter of the shaping grinding tool of aforementioned minor diameter is set, shaping is implemented in the other end to aforementioned through hole, form minor diameter shaping portion, simultaneously, making an aforementioned side end narrow down to aforementioned minor diameter shaping grinding tool is center and this minor diameter shaping grinding tool of butt, form the shaping portion of minor diameter, form the shaping portion of minor diameter in aforementioned large diameter shaping portion both sides.
5. the manufacture method of sintered metal bearing as claimed in claim 4, it is characterized in that, with the end of aforementioned major diameter shaping grinding tool be set in the other end of being formed on the aforementioned through hole, with 2 sliding contacting parts of axle sliding contact in the position of the opposing party's side.
6. sintered metal bearing as claimed in claim 5 is characterized in that, when making sintered metal bearing, in the time of in insertion remains in the metal pattern with regulation internal diameter, uses 2 punch to make.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001254264 | 2001-08-24 | ||
| JP2001254264 | 2001-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1401916A true CN1401916A (en) | 2003-03-12 |
Family
ID=19082449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02142045A Pending CN1401916A (en) | 2001-08-24 | 2002-08-23 | Sintered oiliness bearing and making method therefor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1401916A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1294411C (en) * | 2004-07-07 | 2007-01-10 | 浙江大学 | Dynamic load performance test table for oil-impregnated bearing |
| CN102562804A (en) * | 2010-12-31 | 2012-07-11 | 上海思考电子有限公司 | Oil-retaining bearing and manufacture method and manufacture device thereof |
| CN106402145A (en) * | 2011-09-22 | 2017-02-15 | Ntn株式会社 | Sintered bearing and method for manufacturing the same |
| CN117483759A (en) * | 2023-12-29 | 2024-02-02 | 江苏华骏丰金属制品有限公司 | Processing positioning device and method for oil-retaining bearing |
-
2002
- 2002-08-23 CN CN02142045A patent/CN1401916A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1294411C (en) * | 2004-07-07 | 2007-01-10 | 浙江大学 | Dynamic load performance test table for oil-impregnated bearing |
| CN102562804A (en) * | 2010-12-31 | 2012-07-11 | 上海思考电子有限公司 | Oil-retaining bearing and manufacture method and manufacture device thereof |
| CN102562804B (en) * | 2010-12-31 | 2016-03-30 | 新思考电机有限公司 | Oil-impregnated bearing and manufacture method, device |
| CN106402145A (en) * | 2011-09-22 | 2017-02-15 | Ntn株式会社 | Sintered bearing and method for manufacturing the same |
| CN117483759A (en) * | 2023-12-29 | 2024-02-02 | 江苏华骏丰金属制品有限公司 | Processing positioning device and method for oil-retaining bearing |
| CN117483759B (en) * | 2023-12-29 | 2024-03-26 | 江苏华骏丰金属制品有限公司 | Processing positioning device and method for oil-retaining bearing |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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