CN113134609A - Oil-retaining bearing shaping die - Google Patents
Oil-retaining bearing shaping die Download PDFInfo
- Publication number
- CN113134609A CN113134609A CN202110365103.8A CN202110365103A CN113134609A CN 113134609 A CN113134609 A CN 113134609A CN 202110365103 A CN202110365103 A CN 202110365103A CN 113134609 A CN113134609 A CN 113134609A
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- China
- Prior art keywords
- oil
- core rod
- wall
- die
- bearing
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- 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.)
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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
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
- B22F3/164—Partial deformation or calibration
-
- 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
- B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
- B22F5/106—Tube or ring forms
-
- 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
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
- B22F3/164—Partial deformation or calibration
- B22F2003/166—Surface calibration, blasting, burnishing, sizing, coining
Abstract
The invention provides an oil-retaining bearing shaping die which comprises an upper die and a lower die, wherein the upper die and the lower die are matched to realize the forming of an oil-retaining bearing; the upper die is used for forming an inner hole of the oil-containing bearing and the inner wall and the outer wall of the annular part, and the lower die is used for forming the outer wall of the cylindrical part of the oil-containing bearing. The oil-retaining bearing is arranged between the upper die and the lower die, and each surface of the oil-retaining bearing is extruded in a mode of closing the upper die and the lower die, so that the oil-retaining bearing is molded, and the precision reaches the use requirement; compared with the traditional machining, the method has the advantages of simple operation, shortened machining time, saved cost and improved yield.
Description
Technical Field
The invention relates to the technical field of dies, in particular to a shaping die for an oil-retaining bearing, and specifically relates to a shaping die for an oil-retaining bearing.
Background
Oil-impregnated bearings, i.e., porous bearings, are sintered bodies produced by powder metallurgy using metal powder as a main raw material, and are classified into copper-based, iron-based, and copper-iron-based materials according to the material. Before the oil-retaining bearing is operated, vacuum oil immersion is required, and the lubricating oil in the bearing can reduce the abrasion between the shaft core and the shaft sleeve during operation.
There is an oil bearing, as shown in fig. 4 and 5, including the annular portion (10) and the cylinder portion (20) that integrated into one piece connects, the inner wall of annular portion (10) is the horn mouth structure, and the outer wall is the throat structure, and this kind of oil bearing is made through powder metallurgy method, and the precision ratio is than low, need through the machine tooling could the shaping and reach the operation requirement, and machine tooling not only is long, the processing is difficult, and the processing cost is high, the yield is low moreover.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the technical problems of long time consumption, difficult processing, high cost and low yield of the traditional oil-retaining bearing machine are solved.
The invention provides an oil-retaining bearing shaping die which comprises an upper die and a lower die, wherein the upper die and the lower die are matched to realize the forming of an oil-retaining bearing;
the upper die is used for forming an inner hole of the oil-containing bearing and the inner wall and the outer wall of the annular part, and the lower die is used for forming the outer wall of the cylindrical part of the oil-containing bearing.
The oil-retaining bearing is arranged between the upper die and the lower die, and each surface of the oil-retaining bearing is extruded in a mode of closing the upper die and the lower die, so that the oil-retaining bearing is molded, and the precision reaches the use requirement; compared with the traditional machining, the method has the advantages of simple operation, shortened machining time, saved cost and improved yield.
Furthermore, the upper die comprises an upper barrel body, an upper core rod and a sleeve are arranged in the upper barrel body, and the annular part is clamped between the upper core rod and the sleeve, so that the inner wall and the outer wall of the annular part and the inner hole of the cylindrical part are formed. So set up, simple structure.
Furthermore, the upper core rod comprises an upper inner core rod and an upper outer core rod, the upper outer core rod is sleeved on the upper inner core rod, a chamfer is arranged at the lower end of the upper inner core rod and used for inserting an oil bearing to form an inner hole of the cylindrical part, and the lower end of the upper outer core rod is wedge-shaped and used for inserting the annular part and abutting against the upper end of the cylindrical part to form the inner wall of the annular part. And machining the lower end of the upper outer core rod according to the size of the inner wall of the annular part, and machining the outer diameter of the upper inner core rod according to the size of the inner hole of the cylindrical part, so that the inner hole of the cylindrical part and the inner wall of the annular part are formed.
Furthermore, the lower end of the inner wall of the sleeve is straight, and the upper end of the inner wall of the sleeve is in a necking shape, so that the outer wall of the annular part is molded. And machining the inner wall of the sleeve according to the size of the outer wall of the annular part, so that the outer wall of the annular part is formed.
Furthermore, the sleeve is made of tungsten steel. So set up, not only can make annular portion outer wall shaping, but also have certain elasticity, the protection annular portion outer wall is not damaged.
Furthermore, a positioning cylinder is connected between the upper core rod and the sleeve in a sliding manner. The positioning cylinder is not only used for installing and positioning the upper core rod, but also is convenient for the annular part to be inserted between the sleeve and the upper core rod.
Furthermore, a clamping plate is arranged at the upper end of the positioning cylinder, and a convex ring corresponding to the clamping plate is arranged on the inner wall of the upper cylinder body. When the upper die is separated from the lower die, the clamping plate is clamped with the convex ring, and the positioning cylinder is prevented from falling from the upper cylinder body.
Further, the lower die comprises a lower barrel body, a lower core rod is connected in the lower barrel body in a sliding mode, and the lower core rod is used for pushing the oil-containing bearing into the upper die and enabling the outer wall of the cylindrical portion to be formed. So set up, simple structure.
Further, the lower core rod comprises a lower inner core rod and a lower outer core rod, the lower outer core rod is sleeved on the lower inner core rod, the lower inner core rod abuts against the lower end of the cylindrical portion, the lower outer core rod is sleeved on the cylindrical portion and abuts against the lower end of the annular portion, and outer wall forming of the cylindrical portion is achieved. And machining the inner hole at the upper end of the lower outer core rod according to the size of the outer wall of the cylindrical part, so that the outer wall of the cylindrical part is formed.
Further, when the oil-retaining bearing is installed on the lower die, the inner hole in the upper end of the lower cylinder body is in clamping connection with the outer wall of the annular part. So set up, realize the oiliness bearing installation location, improve oiliness bearing plastic efficiency and yield.
Further, a spring is connected between the lower core rod and the lower cylinder. The spring not only plays a role in buffering when the lower core rod is stressed, but also is used for resetting the lower core rod when the upper die and the lower die are demoulded.
Further, the lower end of the lower cylinder is provided with a concave table, the lower end of the lower core rod is provided with a convex plate, the spring is installed in the concave table, and the two ends of the spring are respectively connected with the bottom of the concave table and the convex plate. The concave station is used for limiting the spring, so that the spring is more stable to stretch.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a cross-sectional view of the present invention prior to clamping;
FIG. 2 is a cross-sectional view of a clamp of the present invention;
FIG. 3 is a cross-sectional view of the invention after demolding;
FIG. 4 is a cross-sectional view of the oil retaining bearing prior to truing;
FIG. 5 is a cross-sectional view of the finished oiled bearing;
in the figure: 10. an annular portion; 20. a cylindrical portion; 11. an upper cylinder body; 12. a sleeve; 13. an upper inner core rod; 14. An upper outer core rod; 15. a positioning cylinder; 16. clamping a plate; 17. a convex ring; 21. a lower cylinder body; 22. a lower inner core rod; 23. a lower outer core rod; 24. a spring; 25. a concave platform; 26. a convex plate.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1-3, the present invention is an oil-retaining bearing shaping mold, which comprises an upper mold and a lower mold.
The upper die is used for forming an inner hole of the cylindrical part 20 and the inner wall and the outer wall of the annular part 10 and comprises an upper barrel body 11, and an upper core rod and a sleeve 12 are arranged in the upper barrel body 11; go up the mandrel and include inner mandrel 13 and go up outer mandrel 14, go up outer mandrel 14 and cup joint inner mandrel 13, go up inner mandrel 13 lower extreme and be equipped with the chamfer, its external diameter carries out machining according to the hole size of cylinder portion 20 for insert the oiliness bearing and make the shaping of cylinder portion 20 hole, go up outer mandrel 14 lower extreme and be wedge, carry out machining according to the inner wall size of annular portion 10, be used for inserting annular portion 10, and support and lean on cylinder portion 20 upper end, realize the shaping of annular portion 10 inner wall. The lower end of the inner wall of the sleeve 12 is straight, the upper end of the inner wall of the sleeve is in a necking shape, and machining is carried out according to the size of the outer wall of the annular part 10 and is used for forming the outer wall of the annular part 10.
The sleeve 12 is made of tungsten steel, so that the outer wall of the annular part 10 can be molded, and the sleeve has certain elasticity to protect the outer wall of the annular part 10 from being damaged.
A positioning cylinder 15 is also connected between the upper core rod and the sleeve 12 in a sliding way. The positioning cylinder 15 is not only used for upper core rod mounting positioning, but also facilitates insertion of the ring portion 10 between the sleeve 12 and the upper core rod. A clamping plate 16 is arranged at the upper end of the positioning cylinder 15, a convex ring 17 corresponding to the clamping plate 16 is arranged on the inner wall of the upper cylinder 11, and when the upper die is separated from the lower die, the clamping plate 16 is clamped with the convex ring 17, so that the positioning cylinder 15 is prevented from falling from the upper cylinder 11.
The lower die is used for forming the outer wall of the cylindrical part 20 of the oil-retaining bearing and comprises a lower barrel 21, the lower barrel 21 is connected with a lower core rod in a sliding mode, the lower core rod comprises a lower inner core rod 22 and a lower outer core rod 23, the lower outer core rod 23 is sleeved with the lower inner core rod 22, the lower inner core rod 22 abuts against the lower end of the cylindrical part 20, an inner hole in the upper end of the lower outer core rod 23 is machined according to the size of the outer wall of the cylindrical part 20, the cylindrical part 20 is sleeved with the inner hole, the lower end of the annular part 10 abuts against the lower end of the annular part, and the outer wall forming of the cylindrical part 20 is achieved.
As shown in FIG. 1, when the oil-retaining bearing is mounted on the lower mold, the inner hole at the upper end of the lower cylinder 21 is in clamping connection with the outer wall of the annular part 10. So set up, realize the oiliness bearing installation location, improve oiliness bearing plastic efficiency and yield.
And a spring 24 is also connected between the lower core rod and the lower barrel body 21, and the spring 24 plays a role in buffering when the lower core rod is stressed and is also used for resetting the lower core rod when the upper die and the lower die are demoulded. The lower end of the lower barrel 21 is provided with a concave platform 25, the lower end of the lower core rod is provided with a convex plate 26, the spring 24 is arranged in the concave platform 25, the two ends of the spring are respectively connected with the bottom of the concave platform 25 and the convex plate 26, and the concave platform 25 is used for limiting the spring 24, so that the spring 24 is more stable in extension.
Firstly, clamping the oil-retaining bearing in an inner hole at the upper end of the lower barrel 21, applying force to the lower core rod to enable the upper die and the lower die to be matched, carrying out extrusion forming on each surface of the oil-retaining bearing, and enabling the precision to reach the use requirement; compared with the traditional machining, the method has the advantages of simple operation, shortened machining time, saved cost and improved yield.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (12)
1. The utility model provides an oiliness bearing plastic mould which characterized in that: the oil-retaining bearing forming die comprises an upper die and a lower die, and the oil-retaining bearing is formed by closing the upper die and the lower die;
the upper die is used for forming an inner hole of the oil-retaining bearing and the inner wall and the outer wall of the annular part (10), and the lower die is used for forming the outer wall of the cylindrical part (20) of the oil-retaining bearing.
2. The oil-impregnated bearing shaping mold according to claim 1, wherein: the upper die comprises an upper barrel body (11), an upper core rod and a sleeve (12) are arranged in the upper barrel body (11), the annular part (10) is clamped between the upper core rod and the sleeve (12), and inner and outer walls of the annular part (10) and inner holes of the cylindrical part (20) are formed.
3. The oil-impregnated bearing shaping mold according to claim 2, wherein: the upper core rod comprises an upper inner core rod (13) and an upper outer core rod (14), the upper outer core rod (14) is sleeved with the upper inner core rod (13), a chamfer is arranged at the lower end of the upper inner core rod (13) and used for inserting an oil-containing bearing to form an inner hole of the cylindrical part (20), the lower end of the upper outer core rod (14) is wedge-shaped and used for inserting the annular part (10) and abuts against the upper end of the cylindrical part (20), and the inner wall of the annular part (10) is formed.
4. The oil-impregnated bearing shaping mold according to claim 2, wherein: the lower end of the inner wall of the sleeve (12) is straight, and the upper end of the inner wall of the sleeve is in a necking shape, and is used for forming the outer wall of the annular part (10).
5. The oil-impregnated bearing shaping mold according to claim 2, wherein: the sleeve (12) is made of tungsten steel.
6. The oil-impregnated bearing shaping mold according to claim 3, wherein: a positioning cylinder (15) is also connected between the upper core rod and the sleeve (12) in a sliding manner.
7. The oil-impregnated bearing shaping mold according to claim 6, wherein: the upper end of the positioning cylinder (15) is provided with a clamping plate (16), and the inner wall of the upper cylinder body (11) is provided with a convex ring (17) corresponding to the clamping plate (16).
8. The oil-impregnated bearing shaping mold according to claim 2, wherein: the lower die comprises a lower barrel (21), a lower core rod is connected in the lower barrel (21) in a sliding mode, and the lower core rod is used for pushing the oil-containing bearing into the upper die and enabling the outer wall of the cylindrical portion (20) to be formed.
9. The oil-impregnated bearing shaping mold according to claim 8, wherein: the lower core rod comprises a lower inner core rod (22) and a lower outer core rod (23), the lower outer core rod (23) is sleeved with the lower inner core rod (22), the lower inner core rod (22) abuts against the lower end of the cylindrical portion (20), the lower outer core rod (23) is sleeved with the cylindrical portion (20) and abuts against the lower end of the annular portion (10), and therefore the outer wall of the cylindrical portion (20) is formed.
10. The oil-impregnated bearing shaping mold according to claim 8, wherein: when the oil-retaining bearing is installed on the lower die, an inner hole in the upper end of the lower barrel (21) is in clamping connection with the outer wall of the annular part (10).
11. The oil-impregnated bearing shaping mold according to claim 8, wherein: and a spring (24) is also connected between the lower core rod and the lower cylinder body (21).
12. The oil-impregnated bearing shaping mold according to claim 11, wherein: the lower end of the lower barrel (21) is provided with a concave table (25), the lower end of the lower core rod is provided with a convex plate (26), the spring (24) is installed in the concave table (25), and the two ends of the spring are respectively connected with the bottom of the concave table (25) and the convex plate (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110365103.8A CN113134609A (en) | 2021-04-02 | 2021-04-02 | Oil-retaining bearing shaping die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110365103.8A CN113134609A (en) | 2021-04-02 | 2021-04-02 | Oil-retaining bearing shaping die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113134609A true CN113134609A (en) | 2021-07-20 |
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ID=76811640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110365103.8A Pending CN113134609A (en) | 2021-04-02 | 2021-04-02 | Oil-retaining bearing shaping die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113134609A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1162974A (en) * | 1997-08-26 | 1999-03-05 | Hitachi Powdered Metals Co Ltd | Manufacture of sintered oil retaining bearing with inside diameter groove |
| JP2009299835A (en) * | 2008-06-16 | 2009-12-24 | Ntn Corp | Manufacturing method and manufacturing device of sintered bearing |
| CN202726048U (en) * | 2012-08-30 | 2013-02-13 | 东睦(江门)粉末冶金有限公司 | Power metallurgic forming die for machining stepped part with inversed hole |
| CN203170961U (en) * | 2013-03-31 | 2013-09-04 | 自贡硬质合金有限责任公司 | Hard alloy automatic compression forming mold |
| CN204108109U (en) * | 2014-07-28 | 2015-01-21 | 浙江衢州永丰金属制品有限公司 | A kind of finishing mold of the powder metallurgy spherical bearing with oil nozzle |
| CN209223020U (en) * | 2018-12-26 | 2019-08-09 | 江苏希西维轴承有限公司 | One kind rolling sliding bearing precision truing mold |
| CN111495997A (en) * | 2020-05-26 | 2020-08-07 | 扬州锐得自动化设备有限公司 | Finishing machine |
-
2021
- 2021-04-02 CN CN202110365103.8A patent/CN113134609A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1162974A (en) * | 1997-08-26 | 1999-03-05 | Hitachi Powdered Metals Co Ltd | Manufacture of sintered oil retaining bearing with inside diameter groove |
| JP2009299835A (en) * | 2008-06-16 | 2009-12-24 | Ntn Corp | Manufacturing method and manufacturing device of sintered bearing |
| CN202726048U (en) * | 2012-08-30 | 2013-02-13 | 东睦(江门)粉末冶金有限公司 | Power metallurgic forming die for machining stepped part with inversed hole |
| CN203170961U (en) * | 2013-03-31 | 2013-09-04 | 自贡硬质合金有限责任公司 | Hard alloy automatic compression forming mold |
| CN204108109U (en) * | 2014-07-28 | 2015-01-21 | 浙江衢州永丰金属制品有限公司 | A kind of finishing mold of the powder metallurgy spherical bearing with oil nozzle |
| CN209223020U (en) * | 2018-12-26 | 2019-08-09 | 江苏希西维轴承有限公司 | One kind rolling sliding bearing precision truing mold |
| CN111495997A (en) * | 2020-05-26 | 2020-08-07 | 扬州锐得自动化设备有限公司 | Finishing machine |
Non-Patent Citations (1)
| Title |
|---|
| 袁文华等: "一种提高球形含油轴承整形精度的模架结构", 《粉末冶金技术》 * |
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Inventor after: Ding Jianhao Inventor after: Xie Yanyi Inventor before: Ding Jianhao |