CN214236276U - Powder metallurgy bimetal sliding bearing forming die - Google Patents
Powder metallurgy bimetal sliding bearing forming die Download PDFInfo
- Publication number
- CN214236276U CN214236276U CN202023089072.8U CN202023089072U CN214236276U CN 214236276 U CN214236276 U CN 214236276U CN 202023089072 U CN202023089072 U CN 202023089072U CN 214236276 U CN214236276 U CN 214236276U
- Authority
- CN
- China
- Prior art keywords
- powder metallurgy
- storage ring
- outer steel
- steel sleeve
- material storage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Powder Metallurgy (AREA)
Abstract
The utility model discloses a powder metallurgy bimetal sliding bearing forming die, which comprises an upper punch, an upper material storage ring, an outer steel sleeve, a core rod, a lower punch and a lower material storage ring which are arranged in the same central shaft; the upper material storage ring and the lower material storage ring are respectively pressed on the upper end and the lower end of the outer steel sleeve; the core rod is slidably inserted into the upper material storage ring, the outer steel sleeve and the lower material storage ring respectively; a storage cavity for filling powder metallurgy powder is reserved among the core rod, the upper storage ring, the outer steel sleeve and the lower storage ring; the upper punch and the lower punch are slidably inserted into the upper end and the lower end of the material storage cavity respectively. The utility model discloses the density at both ends is even and big than the density of intermediate position about the powder metallurgy bimetallic slide bearing's the powder metallurgy layer that the shaping goes out, has prolonged the life of bearing, and can reduce the density difference at both ends about effectively, also can prevent to influence the life of bearing because of the density difference at its upper and lower both ends is too big.
Description
Technical Field
The utility model relates to a powder metallurgy bimetal slide bearing technical field specifically is to relate to a powder metallurgy bimetal slide bearing forming die.
Background
The powder metallurgy bimetal sliding bearing is widely applied to mechanical transmission, can ensure stable transmission, and has the advantages of low cost, high efficiency, high precision and the like. The existing powder metallurgy bimetallic sliding bearing generally comprises an outer steel sleeve and a powder metallurgy layer arranged on the inner side of the outer steel sleeve. The bonding strength between the outer steel sleeve and the powder metallurgy layer is the key influencing the quality of the whole powder metallurgy bimetal sliding bearing.
Most of the existing powder metallurgy bimetal sliding bearings are manufactured by pressing powder metallurgy into a green body, then putting the green body into an outer steel sleeve, and then performing combined sintering. The method has the biggest defect that the outer steel sleeve and the powder metallurgy layer are combined and sintered, the outer diameter of the powder metallurgy layer is smaller than the inner diameter of the outer steel sleeve during combination, a larger gap exists, the gap is difficult to eliminate even after sintering is finished, and the bonding force between the outer steel sleeve and the powder metallurgy layer is insufficient. Some powder metallurgy bimetal sliding bearings are manufactured by pressing and sintering powder metallurgy green compacts, reprocessing the powder metallurgy green compacts, pressing the powder metallurgy green compacts into an outer steel sleeve in an interference manner, and then sintering the powder metallurgy green compacts, wherein solid-phase diffusion is performed between a powder metallurgy layer and an outer steel sleeve to achieve bonding, but the bonding force between the outer steel sleeve and the powder metallurgy layer is not enough due to the mode, so that the powder metallurgy bimetal sliding bearings cannot be applied to high-strength occasions, and meanwhile, the processing mode is high in cost and not beneficial to production and manufacturing. Certainly, some powder metallurgy bimetal sliding bearings formed by forming dies for producing the powder metallurgy bimetal sliding bearings have certain advantages, but the powder metallurgy layers of the formed powder metallurgy bimetal sliding bearings generally have the problems that the densities of the upper end and the lower end are not uniform enough, and the like, so that the service life of the bearings is shortened. Accordingly, there is a need for improvements in the art.
SUMMERY OF THE UTILITY MODEL
In view of the problems existing in the prior art, the utility model aims to provide a powder metallurgy bimetal sliding bearing forming die, which directly presses the powder metallurgy on the inner wall of an outer steel sleeve in a pressing mode, thereby improving the bearing capacity and the shock resistance of the bearing; the utility model discloses the powder metallurgy layer that the bimetallic slide bearing of powder metallurgy becomes of shaping upper and lower both ends density is bigger and more even, and it can reach the required ideal density of upper and lower both ends in the shaping process, has prolonged the life of bearing, and furtherly says that the combination between good outer steel bushing of shaping and the powder metallurgy is also more stable firm, is of high quality promptly; meanwhile, the method also solves other problems in the prior art.
In order to realize the purpose, the technical scheme of the utility model is that:
a powder metallurgy bimetal sliding bearing forming die comprises an upper punch, an upper storage ring, an outer steel sleeve, a core rod, a lower punch and a lower storage ring which are arranged on the same central shaft; the upper material storage ring and the lower material storage ring are respectively pressed at the upper end and the lower end of the outer steel sleeve; the core rod is slidably inserted into the upper storage ring, the outer steel sleeve and the lower storage ring respectively; a storage cavity for filling powder metallurgy powder is reserved among the core rod, the upper storage ring, the outer steel sleeve and the lower storage ring; the upper punch and the lower punch are slidably inserted into the upper end and the lower end of the material storage cavity respectively.
As a specific embodiment, a first inner step corresponding to the outer steel sleeve is arranged at the lower end of the upper material storage ring; and the upper end of the outer steel sleeve is clamped on the first inner step.
Further, the first inner step is annular.
As a specific embodiment, a second inner step corresponding to the outer steel sleeve is arranged at the upper end of the lower storage ring; and the lower end of the outer steel sleeve is clamped on the second inner step.
Further, the second inner step is annular.
As a specific embodiment, a first inner step corresponding to the outer steel sleeve is arranged at the lower end of the upper material storage ring; the upper end of the outer steel sleeve is clamped on the first inner step; a second inner step corresponding to the outer steel sleeve is arranged at the upper end of the lower material storage ring; and the lower end of the outer steel sleeve is clamped on the second inner step.
Further, the first inner step is annular; the second inner step is annular.
As a specific example, the shape and size of the upper stock ring are the same as those of the lower stock ring.
As a specific embodiment, the inner diameter of the upper storage ring and the inner diameter of the lower storage ring are larger than, smaller than or equal to the inner diameter of the outer steel jacket.
Further, the inner diameter of the upper storage ring and the inner diameter of the lower storage ring are equal to the inner diameter of the outer steel sleeve.
The utility model has the advantages that:
the utility model discloses an upper punch, go up the storage ring, lower punch and lower storage ring of mutually supporting, utilize the upper punch in the forming process, the cooperation of lower punch and plug can directly suppress the powder metallurgy powder on the inner wall of outer steel bushing, form the powder metallurgy layer, the cohesion between outer steel bushing and the powder metallurgy layer has been improved, and can let the density of the powder metallurgy layer upper and lower both ends of the bimetal slide bearing of powder metallurgy that the shaping was taken shape more even, reduce the density difference of upper and lower both ends effectively, prevent to influence the life of bearing because of the density difference of upper and lower both ends is too big; moreover, the density of the upper end and the lower end of the powder metallurgy layer pressed by the utility model is higher than that of the middle position, so that the powder metallurgy layer is more stable and firm when in use, and the service life of the powder metallurgy bimetal sliding bearing can be prolonged to a certain extent; the upper storage ring and the lower storage ring are arranged and are matched with the outer steel sleeve and the core rod to form a storage cavity, only a material (namely powder metallurgy powder) needs to be added into the storage cavity once in the machining process, and then the material is pressed by the upper punch and the lower punch, and secondary feeding in the middle is not needed, so that the production efficiency and the quality are greatly improved, and the ideal density needed by the upper end and the lower end of a powder metallurgy layer is easier to control; utilize the offset of upper punch and lower punch to carry out the suppression of powder metallurgy powder and can make the both ends atress of powder metallurgy powder balanced, when letting the density at the upper and lower both ends on the powder metallurgy layer of shaping more even, improved the yields of product, and then also can promote production efficiency.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of the present invention before powder metallurgy filling;
FIG. 2 is a schematic structural diagram of the powder metallurgy filling device according to the first embodiment of the present invention;
FIG. 3 is a schematic structural diagram of the upper punch and the lower punch of the first embodiment of the present invention when pressing metallurgical powder;
fig. 4 is a schematic structural diagram of a powder metallurgy bimetallic sliding bearing according to a first embodiment of the present invention;
FIG. 5 is a schematic structural diagram of the second embodiment of the present invention after powder metallurgy filling;
fig. 6 is a schematic structural diagram of the third embodiment of the present invention after powder metallurgy filling.
Reference numerals:
1. an upper punch; 2. an upper storage ring; 3. an outer steel sleeve; 4. a core rod; 5. a lower punch; 6. a lower storage ring; 7. a material storage cavity; 8. powder metallurgy powder; 9. a first inner step; 10. a second inner step.
Detailed Description
The invention will be further elucidated with reference to the drawings and the embodiments, which are exemplary only and do not limit the scope of the invention.
The first embodiment is as follows:
as shown in fig. 1-4, a powder metallurgy bimetal sliding bearing forming die comprises an upper punch 1, an upper material storage ring 2, an outer steel sleeve 3, a core rod 4, a lower punch 5 and a lower material storage ring 6 which are arranged coaxially; the upper material storage ring 2 and the lower material storage ring 6 are respectively pressed at the upper end and the lower end of the outer steel sleeve 3; the core rod 4 is slidably inserted into the upper material storage ring 2, the outer steel sleeve 3 and the lower material storage ring 6 respectively; a storage cavity 7 for filling powder metallurgy powder 8 is reserved between the core rod 4 and the upper storage ring 2, and between the outer steel sleeve 3 and the lower storage ring 6, more specifically, the storage cavity 7 is composed of three parts which are connected in sequence, wherein the three parts are an upper storage cavity formed between the upper storage ring 2 and the core rod 4, a forming cavity formed between the outer steel sleeve 3 and the core rod 4, and a lower storage cavity formed between the lower storage ring 6 and the core rod 4; the upper punch 1 and the lower punch 5 are slidably inserted into the upper end and the lower end of the material storage cavity 7 respectively, namely the upper punch 1 and the lower punch 5 are slidably inserted into the upper material storage cavity and the lower material storage cavity respectively. The upper material storage ring 2 and the lower material storage ring 6 are arranged to store more powder metallurgy powder 8 outside the outer steel sleeve 3, so that the pressing forming is convenient, only one-time material addition is needed before the forming, and no secondary material addition is needed in midway, so that the production efficiency and the quality are improved; the upper punch 1 and the lower punch 5 are used for pressing powder metallurgy powder 8, and then a powder metallurgy layer is formed on the inner wall of the outer steel sleeve 3, the combination mode enables the combination force between the outer steel sleeve 3 and the powder metallurgy layer to be better, and the densities of the upper end and the lower end of the powder metallurgy layer are more uniform and larger.
Wherein, the lower end of the upper storage ring 2 is provided with a first inner step 9 corresponding to the outer steel sleeve 3; the upper end of the outer steel jacket 3 is clamped on the first inner step 9. A second inner step 10 corresponding to the outer steel sleeve 3 is arranged at the upper end of the lower material storage ring 6; the lower end of the outer steel jacket 3 is engaged with the second inner step 10. Specifically, in the present embodiment, the first inner step 9 and the second inner step 10 are both annular. Can prevent outer steel bushing 3 lateral runout through above setting to lead to the combination between outer steel bushing 3 and the powder metallurgy layer firm inadequately, and then influence the quality of product.
Preferably, the upper magazine ring 2 has the same shape and size as the lower magazine ring 6.
Preferably, the upper punch 1 has the same shape and size as the lower punch 5.
In the embodiment, the inner diameter of the upper material storage ring 2 and the inner diameter of the lower material storage ring 6 are equal to the inner diameter of the outer steel sleeve 3, so that the pressing effect of the upper punch 1 and the lower punch 5 is ensured; it will be appreciated by those skilled in the art that the inner diameter of the upper magazine ring 2 and the inner diameter of the lower magazine ring 6 may be slightly larger or smaller than the inner diameter of the outer steel casing 3.
With reference to fig. 1 to 3, the following describes the principle of use of the present invention for understanding the present invention:
firstly, a lower material storage ring 6, an outer steel sleeve 3, an upper material storage ring 2 and a core rod 4 are sequentially arranged, a lower punch 5 is lifted and inserted into the lower end of a material storage cavity 7, and the lower punch 5 is lifted to a position which is a plurality of distances away from the outer steel sleeve 3, so that enough space for material storage can flow out conveniently and powder metallurgy can be prevented from falling out of the material storage cavity 7; then, powder metallurgy powder 8 is filled into the storage cavity 7, and it should be noted that both ends of the powder metallurgy powder 8 protrude out of the outer steel sleeve 3 before the powder metallurgy powder 8 is pressed; then, the upper punch 1 is lowered and inserted into the upper end of the storage cavity 7, and then the upper punch 1 and the lower punch 5 are simultaneously moved in opposite directions to compact the powder metallurgy powder 8 so that the powder metallurgy powder 8 is compressed to the same height as the outer steel jacket 3 to form a powder metallurgy layer. During demoulding, the upper punch 1 returns upwards, the upper storage ring 2 is separated from the outer steel jacket 3, the core rod 4 returns downwards, the formed powder metallurgy bimetallic sliding bearing shown in figure 4 can be taken out, and the workpiece can be taken out and sent to the next process.
To sum up, the utility model discloses an upper punch 1, go up storage ring 2, lower punch 5 and lower storage ring 6 of mutually supporting, utilize upper punch 1 in the forming process, the cooperation of lower punch 5 and plug 4 can directly suppress powder metallurgy powder 8 on the inner wall of outer steel bushing 3, form the powder metallurgy layer, the cohesion between outer steel bushing 3 and the powder metallurgy layer has been improved, and can let the density at the upper and lower both ends of the powder metallurgy bimetal slide bearing's of shaping powder metallurgy layer of both ends more even, reduce the density difference at upper and lower both ends effectively, prevent to influence the life of bearing because of the density difference of its upper and lower both ends is too big; moreover, the density of the upper end and the lower end of the powder metallurgy layer pressed by the utility model is higher than that of the middle position, so that the powder metallurgy layer is more stable and firm when in use, and the service life of the powder metallurgy bimetal sliding bearing can be prolonged to a certain extent; the upper material storage ring 2 and the lower material storage ring 6 are arranged and matched with the outer steel sleeve and the core rod to form a material storage cavity 7, only a primary material (namely powder metallurgy powder) needs to be added into the material storage cavity 7 in the machining process, and then the upper punch 1 and the lower punch 5 are used for pressing the material without middle secondary feeding, so that the production efficiency and the quality are greatly improved, and the ideal density needed by the upper end and the lower end of a powder metallurgy layer is easier to control; utilize the counterpunch of upper punch 1 and lower punch 5 to carry out the suppression of powder metallurgy powder 8 and can make the both ends atress of powder metallurgy powder 8 balanced, when letting the density at the upper and lower both ends on the powder metallurgy layer of shaping more even, improved the yields of product, and then also can promote production efficiency.
Example two:
as shown in fig. 5, the difference between this embodiment and the first embodiment is that an annular protrusion capable of being snapped into a step inside the outer steel jacket 3 is further provided inside the first inner step 9, and an outer edge is further provided outside the upper end of the outer steel jacket 3, which can meet the requirements of different outer steel jackets 3.
Example three:
as shown in fig. 6, the difference between the first embodiment and the second embodiment lies in that an inner step is respectively disposed at the upper end and the lower end of the outer steel jacket 3, a protrusion corresponding to the inner step is respectively disposed at the lower end of the upper storage ring 2 and the upper end of the lower storage ring 6, and grooves for inserting the two ends of the outer steel jacket 3 are respectively disposed on the upper storage ring 2 and the lower storage ring 6, so that the connection structure between the upper storage ring 2, the outer steel jacket 3 and the lower storage ring 6 is more stable, and the arrangement mode can meet the requirements of different outer steel jackets 3.
The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.
Claims (10)
1. The utility model provides a powder metallurgy bimetal slide bearing forming die which characterized in that:
comprises an upper punch, an upper storage ring, an outer steel sleeve, a core rod, a lower punch and a lower storage ring which are arranged in the same central shaft; the upper material storage ring and the lower material storage ring are respectively pressed at the upper end and the lower end of the outer steel sleeve; the core rod is slidably inserted into the upper storage ring, the outer steel sleeve and the lower storage ring respectively; a storage cavity for filling powder metallurgy powder is reserved among the core rod, the upper storage ring, the outer steel sleeve and the lower storage ring; the upper punch and the lower punch are slidably inserted into the upper end and the lower end of the material storage cavity respectively.
2. The powder metallurgy bimetal sliding bearing forming die according to claim 1, characterized in that:
a first inner step corresponding to the outer steel sleeve is arranged at the lower end of the upper material storage ring; and the upper end of the outer steel sleeve is clamped on the first inner step.
3. The powder metallurgy bimetal sliding bearing forming die according to claim 2, characterized in that:
the first inner step is annular.
4. The powder metallurgy bimetal sliding bearing forming die according to claim 1, characterized in that:
a second inner step corresponding to the outer steel sleeve is arranged at the upper end of the lower material storage ring; and the lower end of the outer steel sleeve is clamped on the second inner step.
5. The powder metallurgy bimetal sliding bearing forming die according to claim 4, wherein:
the second inner step is annular.
6. The powder metallurgy bimetal sliding bearing forming die according to claim 1, characterized in that:
a first inner step corresponding to the outer steel sleeve is arranged at the lower end of the upper material storage ring; the upper end of the outer steel sleeve is clamped on the first inner step; a second inner step corresponding to the outer steel sleeve is arranged at the upper end of the lower material storage ring; and the lower end of the outer steel sleeve is clamped on the second inner step.
7. The powder metallurgy bimetal sliding bearing forming die according to claim 6, wherein:
the first inner step is annular; the second inner step is annular.
8. The powder metallurgy bimetal sliding bearing forming die according to claim 1, characterized in that:
the shape and the size of the upper material storage ring are the same as those of the lower material storage ring.
9. The powder metallurgy bimetal sliding bearing forming die according to claim 1, characterized in that:
the inner diameter of the upper storage ring and the inner diameter of the lower storage ring are larger than, smaller than or equal to the inner diameter of the outer steel sleeve.
10. The powder metallurgy bimetal sliding bearing forming die according to claim 9, wherein:
the inner diameter of the upper storage ring and the inner diameter of the lower storage ring are equal to the inner diameter of the outer steel sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023089072.8U CN214236276U (en) | 2020-12-18 | 2020-12-18 | Powder metallurgy bimetal sliding bearing forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023089072.8U CN214236276U (en) | 2020-12-18 | 2020-12-18 | Powder metallurgy bimetal sliding bearing forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214236276U true CN214236276U (en) | 2021-09-21 |
Family
ID=77741145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023089072.8U Active CN214236276U (en) | 2020-12-18 | 2020-12-18 | Powder metallurgy bimetal sliding bearing forming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214236276U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112570713A (en) * | 2020-12-18 | 2021-03-30 | 邹碧青 | Powder metallurgy bimetal sliding bearing forming die |
-
2020
- 2020-12-18 CN CN202023089072.8U patent/CN214236276U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112570713A (en) * | 2020-12-18 | 2021-03-30 | 邹碧青 | Powder metallurgy bimetal sliding bearing forming die |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104117679B (en) | A kind of mould for processing gear shaft set and the method utilizing this mould processing gear shaft to overlap | |
| CN214236276U (en) | Powder metallurgy bimetal sliding bearing forming die | |
| CN110899693A (en) | Forming method and forming device for powder metallurgy part | |
| CN112570713A (en) | Powder metallurgy bimetal sliding bearing forming die | |
| US2695230A (en) | Process of making powdered metal article | |
| CN1084951C (en) | Method for mfg. squirrel-cage rotor and squirrel-cage rotor | |
| JP2001252793A (en) | Green compact forming method | |
| JP2005095979A (en) | Powder molding device and method for manufacturing green compact | |
| JP2000087104A (en) | Method for forming green compact | |
| CN107559307A (en) | Double-layer sliding bearing | |
| CN107335768B (en) | The small gear ring radial direction wedge pressure mould of combination gear | |
| US3727999A (en) | Composite heavy-duty bearing race | |
| CN215250395U (en) | Glass bead preparation mould | |
| CN107042277B (en) | Box car inner riveting type lantern ring forming method and mold | |
| CN218855616U (en) | Upper inner punch moving forming die | |
| CN116511391B (en) | Extrusion forming method of conical cabin with end frames at two ends | |
| CN220750968U (en) | Easy-to-withdraw medicine pressing device with shell and machine tool | |
| CN214920481U (en) | Thin-wall pipe blank forming die | |
| CN212976707U (en) | Die for pressing and forming piezoelectric ceramic powder | |
| CN214321827U (en) | Grooved bevel gear integrated forming die with steps | |
| CN216175389U (en) | Metal cup assembly for preparing polycrystalline diamond die | |
| CN216902512U (en) | Ferrite green compact forming die for wireless charging | |
| CN210208654U (en) | Take split forming die of fan-shaped breach | |
| JP3259665B2 (en) | Method for manufacturing solid electrolytic capacitor | |
| CN112951461B (en) | Thin-wall LiAlO 2 Ceramic core block forming die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |