CN210030822U - Double-row tapered roller bearing ring limit quenching die - Google Patents
Double-row tapered roller bearing ring limit quenching die Download PDFInfo
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- CN210030822U CN210030822U CN201920427615.0U CN201920427615U CN210030822U CN 210030822 U CN210030822 U CN 210030822U CN 201920427615 U CN201920427615 U CN 201920427615U CN 210030822 U CN210030822 U CN 210030822U
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- 238000010791 quenching Methods 0.000 title claims abstract description 21
- 230000000171 quenching effect Effects 0.000 title claims abstract description 21
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model relates to a biserial tapered roller bearing ring limit type quenching mould, include: the upper die and the lower die are of cone frustum structures with through holes in the axial direction, the conical surfaces of the upper die and the lower die are matched with two conical surfaces of an outer raceway of a processed bearing ring respectively, annular steps parallel to the end face of the processed bearing ring are arranged at the bottoms of the conical surfaces of the upper die and the lower die respectively, threaded through holes distributed at intervals are formed in the end faces of the annular steps, a group of cushion blocks with the same thickness are arranged between the annular steps of the upper die and the upper end face of the processed bearing ring, and a group of cushion blocks with the same thickness are also arranged between the annular steps of the lower die and the lower end face of the processed bearing ring. The utility model has the advantages that: when the actual allowance of the quenched ferrule has large deviation with the die, the matching size of the die, the ferrule outer raceway and the outer diameter can be adjusted only by selecting cushion blocks with different thicknesses.
Description
Technical Field
The utility model relates to a heat treatment technology of a bearing, in particular to a double-row tapered roller bearing ring limit quenching die.
Background
In the secondary quenching process of the double-row tapered roller bearing ring in the heat treatment, the ring needs to be placed on a die by a feeding mechanism for limited quenching to prevent overlarge deformation during quenching, so that the allowance (namely residual grinding amount) of the outer raceway (inner surface) and the outer diameter (outer surface) of the ring is ensured, and therefore the allowance of the outer raceway and the outer diameter of the ring can be directly influenced by the matching size of the die and the ring. At present, in the actual production process, when the outer diameter allowance of the quenched ferrule is large and the outer raceway allowance is small, the diameter of the conical surface of the die needs to be polished; when the outer diameter allowance of the quenched ring is small and the outer raceway allowance is large, the height of the step surface of the die needs to be polished; due to the complex structure, the heavy weight (about 25 kg) and the high surface hardness (60-64 HRC) of the die, the grinding efficiency of the die is low, and the die is complex to disassemble, so that the normal production progress of a product is influenced; therefore, it is necessary to improve the existing confined quenching die.
Disclosure of Invention
The invention aims to provide a double-row tapered roller bearing ring limited quenching die, which is characterized in that the die is modified and designed, and cushion blocks with different sizes are additionally arranged on the die, so that the outer raceway and outer diameter allowance can be quickly adjusted, and the outer raceway and outer diameter allowance of a ring is consistent with the design allowance after quenching.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a double-row tapered roller bearing ring shape-limiting quenching die comprises an upper die, a lower die and cushion blocks, wherein the upper die and the lower die are of a cone frustum structure with through holes in the axial direction, conical surfaces of the upper die and the lower die are respectively matched with two conical surfaces of an outer raceway of a bearing ring to be processed, annular steps parallel to the end surface of the bearing ring to be processed are respectively arranged at the bottoms of the conical surfaces of the upper die and the lower die, threaded through holes distributed at intervals are respectively arranged on the end surfaces of the annular steps, annular grooves parallel to the annular steps are respectively arranged on the conical surfaces of the upper die and the lower die at intervals, the cross sections of the grooves are arc-shaped, open grooves for equally dividing the conical surfaces are respectively arranged on the conical surfaces of the upper die and the lower die, the inclination angle of the long axis of each open groove is equal to the cone angle of the equally divided conical surfaces, and, and a group of cushion blocks with the same thickness are also arranged between the annular step of the lower die and the lower end surface of the processed bearing ring, and the cushion blocks are fixedly connected with the annular steps of the upper die and the lower die through countersunk screws respectively.
The cushion blocks are arc-shaped blocks with rectangular cross sections, the diameter of the outer arc surface of each cushion block is equal to the outer diameter of the annular step, the diameter of the inner arc surface of each cushion block is equal to the inner diameter of the annular step, through holes which are distributed at intervals and used for penetrating through the countersunk head screws are arranged on the cushion blocks corresponding to the thread through holes on the annular steps, and coaxial step holes are formed in the orifices of the through holes.
The inner arc surface of the cushion block is provided with a straight groove which is communicated up and down and equally divides the inner arc surface, and the width of the straight groove is equal to that of the open grooves of the upper die and the lower die and is communicated with the open grooves.
The number of the straight grooves on the inner arc surface of the cushion block is at least 1.
The oil outlet holes are uniformly distributed in the circumferential direction of the upper die and the lower die, and are round through holes, and the axial direction of the oil outlet holes is perpendicular to the axial direction of the upper die and the lower die.
The utility model has the advantages that: when the actual allowance of the quenched ferrule has large deviation with the mold, the size of the conical surface and the size of the step of the mold do not need to be trimmed, the matching size of the mold, the ferrule outer raceway and the outer diameter can be adjusted only by selecting and matching cushion blocks with different thicknesses, the mold and the cushion blocks are simple and quick to assemble, the production efficiency can be improved, and meanwhile the service life of the mold can be prolonged.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a cross-sectional view of the middle and lower dies of the present invention.
Fig. 3 is a top view of fig. 2.
Fig. 4 is a schematic view of a single spacer block.
FIG. 5 is a schematic view of a set of spacers.
In the figure, 1, an upper die, 2, a lower die, 3, a cushion block, 4, a countersunk head screw, 5, a processed bearing ring, 6, a conical surface, 7, a step, 8, a threaded through hole, 9, an annular groove, 10, an oil passing hole, 11, an open groove, 12, a straight groove, 13, a through hole, 14 and a step hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, the double-row tapered roller bearing ring shape-limiting quenching die comprises: the bearing ring machining device comprises an upper die, a lower die and cushion blocks, wherein the upper die and the lower die are of cone frustum structures with through holes in the axial direction, conical surfaces of the upper die and the lower die are respectively matched with two conical surfaces of an outer raceway of a bearing ring to be machined, annular steps parallel to the end surface of the bearing ring to be machined are arranged at the bottoms of the conical surfaces of the upper die and the lower die and are used for limiting the bearing ring, threaded through holes distributed at intervals are arranged on the end surface of each annular step, annular grooves parallel to the annular steps are arranged on the conical surfaces of the upper die and the lower die at intervals, the cross sections of the grooves are arc-shaped and are used for facilitating die unloading, open grooves which are used for equally dividing the conical surfaces are arranged on the conical surfaces of the upper die and the lower die, the inclination angle of the long axis of each open groove is equal to the cone angle of the equally divided conical surfaces, the function is used for facilitating, and a group of cushion blocks with the same thickness are also arranged between the annular step of the lower die and the lower end surface of the processed bearing ring, and the cushion blocks are fixedly connected with the annular steps of the upper die and the lower die through countersunk screws respectively.
As shown in fig. 4 and 5, the cushion blocks are arc-shaped blocks with rectangular cross sections, the diameter of the outer arc surface of each cushion block is equal to the outer diameter of the annular step, the diameter of the inner arc surface of each cushion block is equal to the inner diameter of the annular step, through holes which are distributed at intervals and used for penetrating through the countersunk head screws are arranged on the cushion blocks corresponding to the thread through holes on the annular steps, and coaxial step holes are arranged at the orifices of the through holes.
As shown in fig. 4 and 5, the inner arc surface of the cushion block is provided with a straight groove which is vertically penetrated and equally divides the inner arc surface, and the width of the straight groove is equal to the width of the open grooves of the upper die and the lower die and is communicated with the open grooves.
As shown in fig. 4 and 5, the number of the straight grooves on the inner arc surface of the cushion block is at least 1.
As shown in fig. 1, oil outlets are uniformly distributed in the circumferential direction of the upper die and the lower die, the oil outlets are round through holes, the axial direction of the oil outlets is perpendicular to the axial direction of the upper die and the lower die, and the oil outlets are used for facilitating the flow of quenching oil.
The utility model discloses a use method: if the allowance of the outer raceway of the ferrule is small and the allowance of the outer diameter is large after quenching, a thick cushion block is used; if the outer raceway allowance of the ferrule is large and the outer diameter allowance is small, a thin cushion block is used; when the die is assembled with the cushion block 3, the die is horizontally placed, the cushion block 3 with the same height and size is placed on the die corresponding to the threaded hole 8 on the die step 7, and the die is locked one by the nut 4; after the die and the cushion block 3 are assembled, the upper die 1 and the lower die 2 are arranged on quenching equipment, and then the limited quenching processing can be carried out on the ferrule 5.
The part of the utility model not detailed is prior art.
Claims (5)
1. The utility model provides a biserial tapered roller bearing ring limit quenching mould, includes mould, lower mould, cushion, characterized by: the upper die and the lower die are of cone frustum structures with through holes in the axial direction, conical surfaces of the upper die and the lower die are respectively matched with two conical surfaces of an outer raceway of a bearing ring to be processed, annular steps parallel to the end surface of the bearing ring to be processed are arranged at the bottoms of the conical surfaces of the upper die and the lower die, threaded through holes distributed at intervals are arranged on the end surfaces of the annular steps, annular grooves parallel to the annular steps are arranged on the conical surfaces of the upper die and the lower die at intervals, the cross sections of the grooves are arc-shaped, open grooves for equally dividing the conical surfaces are arranged on the conical surfaces of the upper die and the lower die, the inclination angle of the long axis of each open groove is equal to the cone angle of the equally divided conical surfaces, a group of cushion blocks with the same thickness is arranged between the annular step of the upper die and the upper end surface of the bearing ring to be processed, and, the cushion blocks are respectively fixedly connected with the annular steps of the upper die and the lower die through countersunk screws.
2. The double-row tapered roller bearing ring limit quenching die of claim 1, which is characterized in that: the cushion blocks are arc-shaped blocks with rectangular cross sections, the diameter of the outer arc surface of each cushion block is equal to the outer diameter of the annular step, the diameter of the inner arc surface of each cushion block is equal to the inner diameter of the annular step, through holes which are distributed at intervals and used for penetrating through the countersunk head screws are arranged on the cushion blocks corresponding to the thread through holes on the annular steps, and coaxial step holes are formed in the orifices of the through holes.
3. The double-row tapered roller bearing ring limit quenching die of claim 1, which is characterized in that: the inner arc surface of the cushion block is provided with a straight groove which is communicated up and down and equally divides the inner arc surface, and the width of the straight groove is equal to that of the open grooves of the upper die and the lower die and is communicated with the open grooves.
4. The double-row tapered roller bearing ring limit quenching die of claim 1, which is characterized in that: the number of the straight grooves on the inner arc surface of the cushion block is at least 1.
5. The double-row tapered roller bearing ring limit quenching die of claim 1, which is characterized in that: the oil outlet holes are uniformly distributed in the circumferential direction of the upper die and the lower die, and are round through holes, and the axial direction of the oil outlet holes is perpendicular to the axial direction of the upper die and the lower die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920427615.0U CN210030822U (en) | 2019-04-01 | 2019-04-01 | Double-row tapered roller bearing ring limit quenching die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920427615.0U CN210030822U (en) | 2019-04-01 | 2019-04-01 | Double-row tapered roller bearing ring limit quenching die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210030822U true CN210030822U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920427615.0U Active CN210030822U (en) | 2019-04-01 | 2019-04-01 | Double-row tapered roller bearing ring limit quenching die |
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| Country | Link |
|---|---|
| CN (1) | CN210030822U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645131A (en) * | 2022-03-21 | 2022-06-21 | 温州为尚机械有限公司 | Die assembly for controlling heat treatment deformation of bearing ring |
-
2019
- 2019-04-01 CN CN201920427615.0U patent/CN210030822U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645131A (en) * | 2022-03-21 | 2022-06-21 | 温州为尚机械有限公司 | Die assembly for controlling heat treatment deformation of bearing ring |
| CN114645131B (en) * | 2022-03-21 | 2023-12-05 | 温州为尚机械有限公司 | Compression molding device for controlling heat treatment deformation of bearing ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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 Patentee after: Luoyang Bearing Group Railway Bearing Co.,Ltd. Address before: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee before: LUOYANG LYC BEARING Co.,Ltd. Country or region before: China Patentee before: Luoyang Bearing Group Railway Bearing Co.,Ltd. |
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| CP03 | Change of name, title or address |