CN210127257U - Carburizing steel double-row tapered roller sealing bearing ring outer sleeve pressing die quenching device - Google Patents
Carburizing steel double-row tapered roller sealing bearing ring outer sleeve pressing die quenching device Download PDFInfo
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- CN210127257U CN210127257U CN201921034501.6U CN201921034501U CN210127257U CN 210127257 U CN210127257 U CN 210127257U CN 201921034501 U CN201921034501 U CN 201921034501U CN 210127257 U CN210127257 U CN 210127257U
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Abstract
The utility model discloses a carburizing steel double-row tapered roller seal bearing ring outer sleeve pressing die quenching device, which comprises an upper pressing die, an installation handle and a lower pressing die, wherein the upper pressing die is symmetrically arranged at the upper part of the lower pressing die, the bearing ring is arranged between the working surfaces of the upper pressing die and the lower pressing die, the installation handle is arranged at the top of the upper pressing die and is fixedly connected with the upper pressing die, and the installation handle is fixedly connected with a main shaft sleeve of a quenching press through a main shaft pull rod; the upper pressing die main body part is of a cone frustum structure provided with a circular through hole in the axial direction, an annular oil passing groove is arranged in the horizontal direction of the cone frustum, and vertical oil passing grooves which are communicated up and down are arranged in the vertical direction of the cone frustum at equal intervals; the utility model discloses an go up moulding-die, installation handle and the cooperation of moulding-die down and use, can guarantee accurately that conical roller lasso quenches each item size index such as ellipse, harmomegathus volume to guarantee heat treatment index such as homogeneity, hardness uniformity of finished product carburized layer, improved production efficiency, also improved the life of application of bearing.
Description
Technical Field
The utility model relates to a bearing heat treatment processing field mainly relates to a carburized steel biserial tapered roller seal bearing ring overcoat moulding-die guenching unit.
Background
The carburizing steel bearing part has high surface hardness and low core hardness, has high wear resistance, high bearing capacity and high shock resistance, and is widely applied to the fields of railway vehicle hubs, steel mill mills and the like. The bearing parts made of carburizing steel materials have strict requirements on the depth of a carburized layer and the consistency of a carburized layer of a product, the deformation and the expansion and contraction of the bearing parts are required to be strictly controlled in the carburizing and quenching links, and a quenching die is generally used. Generally, the deformation and expansion and contraction of the quenching die are controlled by contacting the die, pressing the ferrule to chamfer, and then quenching. However, the method cannot accurately control the size precision after quenching, has large deformation, and usually needs to increase the allowance to ensure the depth of the carburized layer, so that the consistency of the carburized layer is difficult to ensure, and the carburized layer with high wear resistance on the surface layer is removed, so that the service life of the carburized steel bearing is shortened, and the production efficiency is reduced; the high-standard carburizing and quenching requirements of railway hub bearings and rolling mill bearings can not be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a carburizing steel biserial tapered roller sealed bearing ring overcoat moulding-die guenching unit. The heat treatment quenching dies are different according to different bearing types; in quenching dies of bearing rings with different structures, the structure of an outer sleeve die of the carburizing steel double-row tapered roller sealing bearing is the most complicated. The device can simultaneously control the sizes of a plurality of surfaces during quenching, so that the quenched bearing part has higher geometric precision and accurate dimensional precision, the depth of a bearing carburized layer is proper, the consistency of a carburized layer is good, the bearing has the performances of wear resistance and impact resistance, and the carburizing and quenching requirements of bearing parts of a railway hub bearing and a rolling mill are met.
In order to realize the purpose of the utility model, the utility model adopts the following technical proposal:
the purpose of the utility model can be realized by adopting the following technical scheme: a carburizing steel double-row tapered roller sealing bearing ring outer sleeve pressing die quenching device comprises an upper pressing die, an installation handle and a lower pressing die, wherein the upper pressing die is symmetrically arranged at the upper part of the lower pressing die; the upper pressing die main body part is of a cone frustum structure provided with a circular through hole in the axial direction, an annular oil passing groove is arranged in the horizontal direction of the cone frustum, and vertical oil passing grooves which are communicated up and down are arranged in the vertical direction of the cone frustum at equal intervals; the upper part of the circular truncated cone is provided with a cylindrical body, the lower part of the circular truncated cone is provided with an upper positioning ring, the upper end of the cylindrical body is provided with an annular flange, the lower part of the annular flange is provided with an annular upper pressing die, and the annular upper pressing die is fixedly connected with the annular flange through a countersunk bolt; the upper positioning ring is fixedly connected with the bottom of the cone frustum through a countersunk head bolt.
The installation handle be the cylinder structure, the installation handle sets up with last moulding-die is coaxial, is provided with the fastening hole of equipartition on the outer face of cylinder of installation handle, installation handle main shaft center inboard is provided with the screw hole, the bottom of screw hole is provided with the tool withdrawal groove, the side wall sets up to the horizontal plane under the tool withdrawal groove, the side wall middle part is provided with the through-hole under the tool withdrawal groove, through-hole diameter size is less than the screw hole diameter, through-hole and last moulding-die circular through-.
The lower pressing die main body part is of a cone frustum structure provided with a circular through hole in the axial direction, an annular oil passing groove is arranged in the horizontal direction of the cone frustum, and the oil passing grooves which are communicated up and down are arranged in the vertical direction of the cone frustum at equal intervals; the lower part of the circular truncated cone is provided with a cylindrical body, the upper part of the circular truncated cone is provided with a lower positioning ring, the lower end of the cylindrical body is provided with an annular flange, the upper part of the annular flange is provided with an annular lower pressing die, and the annular lower pressing die is fixedly connected with the annular flange through a countersunk bolt; the lower positioning ring is fixedly connected with the top of the cone frustum through a countersunk head bolt.
The upper pressing die, the annular upper pressing die, the upper positioning ring and the lower pressing die are all subjected to quenching treatment.
And the annular lower pressing die and the lower positioning ring are both subjected to quenching treatment.
The utility model has the advantages that: the device can accurately ensure all size indexes such as ellipse, expansion and contraction amount and the like after the jacket die of the double-row tapered roller bearing sealing ring is quenched, thereby ensuring the heat treatment indexes such as uniformity, hardness consistency and the like of a finished carburized layer, effectively reducing the process allowance of the ring, effectively keeping a high-quality hardened layer of the ring and prolonging the service life of the bearing while improving the production efficiency.
Drawings
Fig. 1 is a front sectional view of the present invention.
Fig. 2 is a front sectional view of the upper die of the present invention.
In the figure: 1. the device comprises an upper pressing die, 2, an annular upper pressing die, 3, a countersunk head bolt, 4, a bearing ring, 5, an annular lower pressing die, 6, an upper positioning ring, 7, an installation handle, 8, a lower pressing die, 9, a lower positioning ring, 10, a tool withdrawal groove, 11, an annular flange, 12, an annular oil passing groove, 13, a vertical oil passing groove, 14, a circular through hole, 15, a columnar body, 16, a conical frustum, 17 and a fastening hole.
Detailed Description
The present invention will be described with reference to the accompanying drawings.
As shown in figures 1 and 2, the carburizing steel double-row tapered roller seal bearing ring outer sleeve pressing die quenching device comprises an upper pressing die 1, an installation handle 7 and a lower pressing die 8, wherein the upper pressing die 1 is symmetrically arranged at the upper part of the lower pressing die 8, a bearing ring 4 is arranged between the working surfaces of the upper pressing die 1 and the lower pressing die 8, the installation handle 7 is arranged at the top of the upper pressing die 1 and is fixedly connected with the upper pressing die 1, and the installation handle 7 is fixedly connected with a main shaft sleeve of a quenching press through a main shaft pull rod; the main part of the upper pressing die 1 is of a cone frustum 16 structure provided with a circular through hole 14 in the axial direction, the taper of the cone frustum 16 is consistent with that of a raceway of the bearing ring 4, an annular oil passing groove 12 is arranged in the horizontal direction of the cone frustum 16, vertical oil passing grooves 13 which are communicated up and down are arranged in the vertical direction of the cone frustum 16 at equal intervals, and the oil passing grooves are used for enabling cooling oil to contact the raceway of the bearing ring 4 as much as possible, so that the cooling speed and the cooling uniformity are ensured, and the quenching quality is further ensured; the upper part of the cone frustum 16 is provided with a cylindrical body 15, the cylindrical body 15 is favorable for demoulding, the phenomenon that the tooth mouth of the bearing ring 4 is tightly attached to the mould body and inconvenient to disassemble is avoided, the lower part of the bearing ring 4 is provided with an upper positioning ring 6, the upper end of the cylindrical body 15 is provided with an annular flange 11, the lower part of the annular flange 11 is provided with an annular upper pressing die 2, and the annular upper pressing die 2 is fixedly connected with the annular flange 11 through a countersunk bolt 3; the upper positioning ring 6 is fixedly connected with the bottom of the cone frustum 16 through a countersunk head bolt 3.
The main part of the lower pressing die 8 is of a cone frustum 16 structure provided with a circular through hole 14 in the axial direction, the circular through hole 14 is arranged to reduce the overall mass of the die, the installation is convenient, heat conduction substances can be reduced, and the thermal stability of the die is improved, an annular oil passing groove 12 is arranged in the horizontal direction of the cone frustum 16, and vertical oil passing grooves 13 which are communicated up and down are arranged in the vertical direction of the cone frustum 16 at equal intervals; the lower part of the circular truncated cone 16 is provided with a cylindrical body 15, the upper part of the circular truncated cone is provided with a lower positioning ring 9, the lower end of the cylindrical body 15 is provided with an annular flange 11, the upper part of the annular flange 11 is provided with an annular lower pressing die 5, and the annular lower pressing die 5 is fixedly connected with the annular flange 11 through a countersunk head bolt 3; the lower positioning ring 9 is fixedly connected with the top of the cone frustum 16 through a countersunk head bolt 3.
The upper pressing die 1, the annular upper pressing die 2, the upper positioning ring 6 and the lower pressing die 8 are all subjected to quenching treatment.
And the annular lower pressing die 5 and the lower positioning ring 9 are both subjected to quenching treatment.
When the device is used, the upper pressing die 1 and the lower pressing die 8 are concentric by adjusting the positioning device, then the heated and plastically deformable bearing ring 4 is placed on the lower pressing die 8 through a tool, the lower pressing die 8 is pushed to the quenching part of the press machine, the upper pressing die 1 is pressed down, and oil is supplied to finish press quenching. In a pressure quenching state, an upper positioning ring 6 is contacted with a lower positioning ring 9, an annular upper pressing die 2 and an annular lower pressing die 5 are respectively contacted with the upper end surface and the lower end surface of a bearing ring 4, an upper pressing die 1 is contacted with a cone frustum 16 of a lower pressing die 8 and a roller path of the bearing ring 4, a columnar body 15 is contacted with a tooth mouth of the bearing ring 4, at the moment, the distance between the annular upper pressing die 2 and the annular lower pressing die 5 is equal to the height of the bearing ring after quenching, and the size of the bearing ring 4 can be ensured by adjusting the heights of the annular upper pressing die 2, the annular lower pressing die 5, the upper positioning ring 6 and the lower positioning ring 9; the size of the raceway and the size of the tooth mouth of the bearing ring 4 can be controlled by the size of the truncated cone 16 on the upper die 1 and the lower die 8 and the size of the cylindrical body 15. The device can accurately ensure various size indexes such as ellipse, expansion and shrinkage after the quenching of the tapered roller ring, thereby ensuring heat treatment indexes such as uniformity, hardness consistency and the like of a finished carburized layer, effectively reducing the process allowance of the ring, improving the production efficiency and prolonging the application life of the bearing.
The part of the utility model not detailed is prior art.
Claims (5)
1. A carburizing steel double-row tapered roller sealing bearing ring outer sleeve pressing die quenching device comprises an upper pressing die, an installation handle and a lower pressing die, wherein the upper pressing die is symmetrically arranged at the upper part of the lower pressing die; the method is characterized in that: the upper pressing die main body part is of a cone frustum structure provided with a circular through hole in the axial direction, an annular oil passing groove is arranged in the horizontal direction of the cone frustum, and vertical oil passing grooves which are communicated up and down are arranged in the vertical direction of the cone frustum at equal intervals; the upper part of the circular truncated cone is provided with a cylindrical body, the lower part of the circular truncated cone is provided with an upper positioning ring, the upper end of the cylindrical body is provided with an annular flange, the lower part of the annular flange is provided with an annular upper pressing die, and the annular upper pressing die is fixedly connected with the annular flange through a countersunk bolt; the upper positioning ring is fixedly connected with the bottom of the cone frustum through a countersunk head bolt.
2. The quenching device for the press die of the carburizing steel double-row tapered roller seal bearing ring outer sleeve according to claim 1, which is characterized in that: the installation handle be the cylinder structure, the installation handle sets up with last moulding-die is coaxial, is provided with the fastening hole of equipartition on the outer face of cylinder of installation handle, installation handle main shaft center inboard is provided with the screw hole, the bottom of screw hole is provided with the tool withdrawal groove, the side wall sets up to the horizontal plane under the tool withdrawal groove, the side wall middle part is provided with the through-hole under the tool withdrawal groove, through-hole diameter size is less than the screw hole diameter, through-hole and last moulding-die circular through-.
3. The quenching device for the press die of the carburizing steel double-row tapered roller seal bearing ring outer sleeve according to claim 1, which is characterized in that: the lower pressing die main body part is of a cone frustum structure provided with a circular through hole in the axial direction, an annular oil passing groove is arranged in the horizontal direction of the cone frustum, and the oil passing grooves which are communicated up and down are arranged in the vertical direction of the cone frustum at equal intervals; the lower part of the circular truncated cone is provided with a cylindrical body, the upper part of the circular truncated cone is provided with a lower positioning ring, the lower end of the cylindrical body is provided with an annular flange, the upper part of the annular flange is provided with an annular lower pressing die, and the annular lower pressing die is fixedly connected with the annular flange through a countersunk bolt; the lower positioning ring is fixedly connected with the top of the cone frustum through a countersunk head bolt.
4. The quenching device for the press die of the carburizing steel double-row tapered roller seal bearing ring outer sleeve according to claim 1, which is characterized in that: the upper pressing die, the annular upper pressing die, the upper positioning ring and the lower pressing die are all subjected to quenching treatment.
5. The quenching device for the press die of the carburizing steel double-row tapered roller seal bearing ring outer sleeve according to claim 3, which is characterized in that: and the annular lower pressing die and the lower positioning ring are both subjected to quenching treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921034501.6U CN210127257U (en) | 2019-07-04 | 2019-07-04 | Carburizing steel double-row tapered roller sealing bearing ring outer sleeve pressing die quenching device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921034501.6U CN210127257U (en) | 2019-07-04 | 2019-07-04 | Carburizing steel double-row tapered roller sealing bearing ring outer sleeve pressing die quenching device |
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| CN210127257U true CN210127257U (en) | 2020-03-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112080626A (en) * | 2020-09-23 | 2020-12-15 | 尤梦宇 | Positioning jig for quenching large bearing ring |
| CN112195436A (en) * | 2020-09-19 | 2021-01-08 | 成都天马铁路轴承有限公司 | Carbonitriding process for medium-large thin-wall bearing made of high-carbon chromium bearing steel |
-
2019
- 2019-07-04 CN CN201921034501.6U patent/CN210127257U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195436A (en) * | 2020-09-19 | 2021-01-08 | 成都天马铁路轴承有限公司 | Carbonitriding process for medium-large thin-wall bearing made of high-carbon chromium bearing steel |
| CN112080626A (en) * | 2020-09-23 | 2020-12-15 | 尤梦宇 | Positioning jig for quenching large bearing ring |
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