CN113134609B - Shaping die for oil-retaining bearing - Google Patents
Shaping die for oil-retaining bearing Download PDFInfo
- Publication number
- CN113134609B CN113134609B CN202110365103.8A CN202110365103A CN113134609B CN 113134609 B CN113134609 B CN 113134609B CN 202110365103 A CN202110365103 A CN 202110365103A CN 113134609 B CN113134609 B CN 113134609B
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- CN
- China
- Prior art keywords
- core rod
- wall
- oil
- die
- cylindrical part
- 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.)
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Links
- 238000007493 shaping process Methods 0.000 title abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000003754 machining Methods 0.000 abstract description 12
- 239000003921 oil Substances 0.000 description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- IYRDVAUFQZOLSB-UHFFFAOYSA-N copper iron Chemical compound [Fe].[Cu] IYRDVAUFQZOLSB-UHFFFAOYSA-N 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- 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-containing bearing shaping die which comprises an upper die and a lower die, wherein the upper die and the lower die are matched to realize oil-containing bearing shaping; the upper die is used for forming an inner hole of the oil-retaining bearing and an inner wall and an outer wall of the annular part, and the lower die is used for forming an outer wall of the cylindrical part of the oil-retaining bearing. The oil-containing bearing is arranged between the upper die and the lower die, and all surfaces of the oil-containing bearing are extruded in a mode of die closing of the upper die and the lower die, so that the oil-containing bearing is molded, and the precision meets the use requirement; compared with the traditional machining, the invention 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-containing bearing.
Background
The oil-impregnated bearing, i.e., the porous bearing, is a sintered body produced by powder metallurgy using metal powder as a main raw material, and is classified into copper-based, iron-based, and copper-iron-based depending on the material. The oil-containing bearing needs to be subjected to vacuum oil immersion before operation, and the lubricating oil in the bearing can reduce the abrasion between the shaft core and the shaft sleeve during operation.
The oil-retaining bearing comprises an annular part (10) and a cylindrical part (20) which are integrally formed and connected, wherein the inner wall of the annular part (10) is of a bell mouth structure, the outer wall of the annular part is of a necking structure, the oil-retaining bearing is low in precision after being manufactured by a powder metallurgy method, and can be formed and meet the use requirement by machining.
Disclosure of Invention
The invention aims to solve the technical problems that: the technical problems of long time consumption, difficult processing, high cost and low yield of the traditional oil-retaining bearing machining are solved.
The invention provides an oil-containing bearing shaping die which comprises an upper die and a lower die, wherein the upper die and the lower die are matched to realize oil-containing bearing shaping;
the upper die is used for forming an inner hole of the oil-retaining bearing and an inner wall and an outer wall of the annular part, and the lower die is used for forming an outer wall of the cylindrical part of the oil-retaining bearing.
The oil-containing bearing is arranged between the upper die and the lower die, and all surfaces of the oil-containing bearing are extruded in a mode of die closing of the upper die and the lower die, so that the oil-containing bearing is molded, and the precision meets the use requirement; compared with the traditional machining, the invention has the advantages of simple operation, shortened machining time, saved cost and improved yield.
Further, the upper die comprises an upper cylinder body, an upper core rod and a sleeve are arranged in the upper cylinder body, and the annular part is clamped between the upper core rod and the sleeve to form an inner wall, an outer wall and an inner hole of the cylindrical part of the annular part. So set up, simple structure.
Further, the upper core rod comprises an upper inner core rod and an upper outer core rod, the upper inner core rod is sleeved with the upper outer core rod, a chamfer is arranged at the lower end of the upper inner core rod and used for being inserted into an oil-containing bearing to enable an inner hole of the cylindrical part to be formed, and the lower end of the upper outer core rod is wedge-shaped and used for being inserted into the annular part and propped 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 inner wall size of the annular part, and machining the outer diameter of the upper inner core rod according to the inner hole size of the cylindrical part, thereby realizing the forming of the inner hole of the cylindrical part and the inner wall of the annular part.
Further, 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 and is used for forming the outer wall of the annular part. And machining the inner wall of the sleeve according to the outer wall size of the annular part, thereby realizing the forming of the outer wall of the annular part.
Further, the sleeve is made of tungsten steel. The arrangement can not only enable the outer wall of the annular part to be molded, but also have certain elasticity and protect the outer wall of the annular part from being damaged.
Further, a positioning cylinder is also 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.
Further, the upper end of the positioning cylinder is provided with a clamping plate, and the inner wall of the upper cylinder body is provided with a convex ring corresponding to the clamping plate. When the upper die and the lower die are separated, the clamping plate is clamped with the convex ring, so that the positioning cylinder is prevented from falling from the upper cylinder body.
Further, the lower die comprises a lower cylinder body, the lower cylinder body is connected with a lower core rod in a sliding mode, and the lower core rod is used for pushing the oil-containing bearing into the upper die and forming the outer wall of the cylindrical part. So set up, simple structure.
Further, the lower core rod comprises a lower inner core rod and a lower outer core rod, the lower inner core rod is sleeved with the lower outer core rod, the lower inner core rod abuts against the lower end of the cylindrical part, the lower outer core rod is sleeved with the cylindrical part and abuts against the lower end of the annular part, and the outer wall forming of the cylindrical part is achieved. And machining an inner hole at the upper end of the lower outer core rod according to the outer wall size of the cylindrical part, so that the outer wall forming of the cylindrical part is realized.
Further, when the oil-containing bearing is installed on the lower die, an inner hole at the upper end of the lower cylinder body is in clamping connection with the outer wall of the annular part. By the arrangement, the installation and the positioning of the oil-containing bearing are realized, and the shaping efficiency and the yield of the oil-containing bearing are improved.
Further, a spring is also 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 demolded.
Further, the lower end of the lower cylinder body 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 two ends of the spring are respectively connected with the bottom of the concave table and the convex plate. The concave table is used for limiting the spring, so that the spring stretches and contracts more stably.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a cross-sectional view of the present invention prior to closing;
FIG. 2 is a cross-sectional view of the present invention in a closed mold;
FIG. 3 is a cross-sectional view of the present invention after demolding;
FIG. 4 is a cross-sectional view of the oil bearing prior to reshaping;
FIG. 5 is a finished cross-sectional view of an oil-containing bearing;
in the figure: 10. an annular portion; 20. a cylindrical portion; 11. an upper cylinder; 12. a sleeve; 13. an upper inner core rod; 14. an upper outer core rod; 15. a positioning cylinder; 16. a clamping plate; 17. a convex ring; 21. a lower cylinder; 22. a lower inner core rod; 23. a lower outer mandrel; 24. a spring; 25. a concave table; 26. a convex plate.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
As shown in fig. 1-3, the present invention is an oiled bearing truing die comprising an upper die and a lower die.
The upper die is used for forming an inner hole of the cylindrical part 20 and an inner wall and an outer wall of the annular part 10 and comprises an upper cylinder 11, and an upper core rod and a sleeve 12 are arranged in the upper cylinder 11; 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, the lower end of the upper inner core rod 13 is provided with a chamfer, the outer diameter of the chamfer is machined according to the inner hole size of the cylindrical part 20 and is used for being inserted into an oil-containing bearing to enable the inner hole of the cylindrical part 20 to be formed, the lower end of the upper outer core rod 14 is wedge-shaped, is machined according to the inner wall size of the annular part 10 and is used for being inserted into the annular part 10 and abutted against the upper end of the cylindrical part 20, and the inner wall forming of the annular part 10 is achieved. The lower end of the inner wall of the sleeve 12 is flat, the upper end is in a shrinking shape, and the sleeve is machined according to the outer wall size 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 and protects 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 mounting and positioning the upper core rod, but also facilitates the insertion of the annular portion 10 between the sleeve 12 and the upper core rod. The upper end of the positioning cylinder 15 is provided with a clamping plate 16, the inner wall of the upper cylinder 11 is provided with a convex ring 17 corresponding to the clamping plate 16, and when the upper die and the lower die are separated, 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 cylinder 21, the lower cylinder 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 at the upper end of the lower outer core rod 23 is machined according to the outer wall size of the cylindrical part 20, the cylindrical part 20 is sleeved with the lower end of the annular part 10 in a sleeving mode, 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 a clamping relationship with the outer wall of the annular portion 10. By the arrangement, the installation and the positioning of the oil-containing bearing are realized, and the shaping efficiency and the yield of the oil-containing bearing are improved.
A spring 24 is also connected between the lower core rod and the lower cylinder 21, and the spring 24 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 demolded. The lower end of the lower cylinder 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 arranged in the concave table 25, the two ends of the lower core rod are respectively connected with the bottom of the concave table 25 and the convex plate 26, and the concave table 25 is used for limiting the spring 24, so that the spring 24 stretches and contracts more stably.
Firstly, clamping an oil-containing bearing into an inner hole at the upper end of a lower cylinder 21, then applying force to a lower core rod, closing an upper die and a lower die, performing extrusion molding on each surface of the oil-containing bearing, and enabling the precision to meet the use requirement; compared with the traditional machining, the invention has the advantages of simple operation, shortened machining time, saved cost and improved yield.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (1)
1. An oiliness bearing plastic mould, its characterized in that: the oil-containing bearing forming device comprises an upper die and a lower die, wherein the upper die and the lower die are matched to realize oil-containing bearing forming;
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;
the upper die comprises an upper cylinder body (11), an upper core rod and a sleeve (12) are arranged in the upper cylinder body (11), and the annular part (10) is clamped between the upper core rod and the sleeve (12) to realize inner and outer wall of the annular part (10) and inner hole forming of the cylindrical part (20);
the sleeve (12) is made of a tungsten steel material with elasticity;
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 angle is formed at the lower end of the upper inner core rod (13) and used for being inserted into an oil-containing bearing to enable an inner hole of the cylindrical part (20) to be formed, the lower end of the upper outer core rod (14) is wedge-shaped and used for being inserted into the annular part (10) and propped against the upper end of the cylindrical part (20) to enable the inner wall of the annular part (10) to be formed;
the lower end of the inner wall of the sleeve (12) is straight, and the upper end of the sleeve is in a necking shape and is used for forming the outer wall of the annular part (10);
a positioning cylinder (15) is also connected between the upper core rod and the sleeve (12) in a sliding way;
a clamping plate (16) is arranged at the upper end of the positioning cylinder (15), and a convex ring (17) corresponding to the clamping plate (16) is arranged on the inner wall of the upper cylinder body (11);
the lower die comprises a lower cylinder body (21), the lower cylinder body (21) is connected with a lower core rod in a sliding mode, and the lower core rod is used for pushing an oil-containing bearing into the upper die and forming the outer wall of the cylindrical part (20);
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), and the lower outer core rod (23) is sleeved with the cylindrical part (20) and abuts against the lower end of the annular part (10) to realize the forming of the outer wall of the cylindrical part (20);
when the oil-containing bearing is arranged on the lower die, an inner hole at the upper end of the lower cylinder (21) is in clamping connection with the outer wall of the annular part (10);
a spring (24) is also connected between the lower core rod and the lower cylinder (21);
the lower cylinder (21) lower extreme is equipped with concave station (25), lower plug lower extreme is equipped with flange (26), spring (24) install in concave station (25), its both ends are connected respectively concave station (25) bottom with flange (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110365103.8A CN113134609B (en) | 2021-04-02 | 2021-04-02 | Shaping die for oil-retaining bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110365103.8A CN113134609B (en) | 2021-04-02 | 2021-04-02 | Shaping die for oil-retaining bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113134609A CN113134609A (en) | 2021-07-20 |
| CN113134609B true CN113134609B (en) | 2024-01-09 |
Family
ID=76811640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110365103.8A Active CN113134609B (en) | 2021-04-02 | 2021-04-02 | Shaping die for oil-retaining bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113134609B (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/CN113134609B/en active Active
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 |
|---|
| 一种提高球形含油轴承整形精度的模架结构;袁文华等;《粉末冶金技术》;19930527(第02期);第145-147页 * |
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| Publication number | Publication date |
|---|---|
| CN113134609A (en) | 2021-07-20 |
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Inventor after: Ding Jianhao Inventor after: Xie Yanyi Inventor before: Ding Jianhao |
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