CN210104020U - Quenching die for outer ring of four-row cylindrical bearing made of carburizing steel - Google Patents
Quenching die for outer ring of four-row cylindrical bearing made of carburizing steel Download PDFInfo
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- CN210104020U CN210104020U CN201920615997.XU CN201920615997U CN210104020U CN 210104020 U CN210104020 U CN 210104020U CN 201920615997 U CN201920615997 U CN 201920615997U CN 210104020 U CN210104020 U CN 210104020U
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- 238000010791 quenching Methods 0.000 title claims abstract description 19
- 230000000171 quenching effect Effects 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 15
- 239000010959 steel Substances 0.000 title claims abstract description 15
- 238000005255 carburizing Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Rolling Contact Bearings (AREA)
Abstract
The utility model belongs to the technical field of bearing heat treatment, a four-row cylindrical bearing outer ring quenching die of carburization steel is proposed. The quenching die for the outer ring of the four-row cylindrical bearing made of carburizing steel is provided with an upper die and a lower die which are arranged at the upper end and the lower end of a bearing ring; the quenching die also comprises a middle die supported in the middle of the bearing ring; the middle die is provided with a sleeve with the outer diameter being the same as the inner diameter of the middle flange of the bearing ring, and the outer diameter of the sleeve forms a supporting surface for limiting and supporting the middle flange of the bearing ring; the upper end surface of the sleeve is provided with an annular boss protruding outwards; the annular boss and the sleeve are integrally formed into a step-shaped sleeve; and a clearance of 2-5mm is formed between the outer diameter of the annular boss and the inner diameter surface of the bearing ring. The utility model prevents the occurrence of the concave phenomenon caused by shrinkage when the outer ring of the four-row cylindrical bearing is quenched and cooled for the second time.
Description
Technical Field
The utility model belongs to the technical field of bearing heat treatment, mainly relate to a four-row cylindrical bearing outer lane quenching mould of carburization steel.
Background
The carburizing steel has excellent comprehensive performance and can be used for manufacturing four-row cylindrical bearing outer rings, but when the four-row cylindrical bearing outer rings are manufactured by carburizing steel and subjected to secondary quenching, the size of the ferrule is greatly changed and the amount of lathe work allowance can only be increased because the ferrule is supported by dies at two ends and a concave center is generated by cooling and shrinking in the middle of the ferrule. The depth of the carburized layer needs to be increased, which causes energy waste.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a four-row cylindrical bearing outer lane quenching mould of carburization steel, make it can solve the uncontrollable problem of concave center behind the four-row cylindrical bearing outer lane thermal treatment of carburization steel.
The utility model adopts the following technical scheme for accomplishing the above purpose:
a quenching die for a four-row cylindrical bearing outer ring made of carburizing steel is provided with an upper die and a lower die which are arranged at the upper end and the lower end of a bearing ring; the quenching die also comprises a middle die supported in the middle of the bearing ring; the middle die is provided with a sleeve with the outer diameter being the same as the inner diameter of the middle flange of the bearing ring, and the outer diameter of the sleeve forms a supporting surface for limiting and supporting the middle flange of the bearing ring; the upper end surface of the sleeve is provided with an annular boss protruding outwards; the annular boss and the sleeve are integrally formed into a step-shaped sleeve; and a clearance of 2-5mm is formed between the outer diameter of the annular boss and the inner diameter surface of the bearing ring.
The upper die is provided with a pressure plate which is pressed on the upper end surface of the bearing sleeve; the lower end face of the pressure plate is provided with a hollow annular boss protruding downwards; the outer diameter surface of the hollow annular boss is attached to the inner diameter surface of the bearing ring to form a limiting support surface for limiting and supporting the inner diameter surface of the bearing ring; the structure of the lower die is the same as that of the upper die.
The utility model provides a four-row cylindrical bearing outer ring quenching mould of carburization steel, adopt with the bearing ring in the design of flange complex well mould, but well mould support bearing ring in the face of holding of flange, the mould is held tightly to cooling back lasso for but outer lane raceway holding surface and mould working face laminating prevent four-row cylindrical bearing outer ring secondary quenching production concave center phenomenon's emergence because of the shrink when cooling, make four-row cylindrical bearing outer ring size obtain controlling.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the middle mold of the present invention.
In the figure, the die comprises an upper die 1, a middle die 2, a sleeve 2-2, an annular boss 3, a lower die 4, a bearing ring 5 and a middle flange.
Detailed Description
The invention is described in connection with the accompanying drawings and the embodiments:
as shown in figure 1, the quenching die for the outer ring of the four-row cylindrical bearing made of carburizing steel comprises an upper die 1 and a lower die 3 which are arranged at the upper end and the lower end of a bearing ring; the upper die is provided with a pressure plate which is pressed on the upper end surface of the bearing sleeve; the lower end face of the pressure plate is provided with a hollow annular boss protruding downwards; the outer diameter surface of the hollow annular boss is attached to the inner diameter surface of the bearing ring to form a limiting support surface for limiting and supporting the inner diameter surface of the bearing ring; the structure of the lower die is the same as that of the upper die; the quenching die also comprises a middle die 2 supported in the middle of the bearing ring; with reference to fig. 2, the middle mold has a sleeve 2-1 having an outer diameter equal to the inner diameter of the middle rib of the bearing ring, and the outer diameter of the sleeve 2-1 forms a support surface for spacing and supporting the middle rib of the bearing ring; the upper end surface of the sleeve is provided with an annular boss 2-2 protruding outwards; the annular boss 2-2 and the sleeve are integrally formed into a step-shaped sleeve; a2-5 mm gap is reserved between the outer diameter of the annular boss 2-2 and the inner diameter surface of the bearing ring.
Before the outer ring of the four-row cylindrical bearing made of carburized steel is subjected to heat treatment and secondary quenching, a lower die is matched with one end of a ferrule, a middle die is placed at the position of a middle flange of the bearing ferrule to be matched with the middle flange, an upper die is matched with one end of the bearing ferrule, and finally the bearing ferrule and the dies are placed into a quenching medium together for cooling; when cooling, the outer ring shrinks to ensure that the working surface of each mould is attached to the supportable surface of the bearing ring; and after cooling, the upper die and the lower die are dismounted, and the middle rib die is dismounted from the middle part of the bearing ring.
Claims (2)
1. A quenching die for a four-row cylindrical bearing outer ring made of carburizing steel is provided with an upper die and a lower die which are arranged at the upper end and the lower end of a bearing ring; the method is characterized in that: the quenching die also comprises a middle die supported in the middle of the bearing ring; the middle die is provided with a sleeve with the outer diameter being the same as the inner diameter of the middle flange of the bearing ring, and the outer diameter of the sleeve forms a supporting surface for limiting and supporting the middle flange of the bearing ring; the upper end surface of the sleeve is provided with an annular boss protruding outwards; the annular boss and the sleeve are integrally formed into a step-shaped sleeve; and a clearance of 2-5mm is formed between the outer diameter of the annular boss and the inner diameter surface of the bearing ring.
2. The quenching die for the outer ring of the four-row cylindrical bearing made of carburizing steel according to claim 1, characterized in that: the upper die is provided with a pressure plate which is pressed on the upper end surface of the bearing sleeve; the lower end face of the pressure plate is provided with a hollow annular boss protruding downwards; the outer diameter surface of the hollow annular boss is attached to the inner diameter surface of the bearing ring to form a limiting support surface for limiting and supporting the inner diameter surface of the bearing ring; the structure of the lower die is the same as that of the upper die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920615997.XU CN210104020U (en) | 2019-04-30 | 2019-04-30 | Quenching die for outer ring of four-row cylindrical bearing made of carburizing steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920615997.XU CN210104020U (en) | 2019-04-30 | 2019-04-30 | Quenching die for outer ring of four-row cylindrical bearing made of carburizing steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210104020U true CN210104020U (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920615997.XU Active CN210104020U (en) | 2019-04-30 | 2019-04-30 | Quenching die for outer ring of four-row cylindrical bearing made of carburizing steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210104020U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114480822A (en) * | 2022-01-25 | 2022-05-13 | 瓦房店爱国轴承研究院有限公司 | Controllable deformation method after bearing ring quenching |
-
2019
- 2019-04-30 CN CN201920615997.XU patent/CN210104020U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114480822A (en) * | 2022-01-25 | 2022-05-13 | 瓦房店爱国轴承研究院有限公司 | Controllable deformation method after bearing ring quenching |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee after: Luoyang Bearing Group Co.,Ltd. Country or region after: China Address before: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee before: LUOYANG LYC BEARING Co.,Ltd. Country or region before: China |