CN216542128U - Bearing support structure capable of preventing inner ring and outer ring of support bearing from disengaging - Google Patents
Bearing support structure capable of preventing inner ring and outer ring of support bearing from disengaging Download PDFInfo
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- CN216542128U CN216542128U CN202120733235.7U CN202120733235U CN216542128U CN 216542128 U CN216542128 U CN 216542128U CN 202120733235 U CN202120733235 U CN 202120733235U CN 216542128 U CN216542128 U CN 216542128U
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- bearing
- ring
- lead screw
- inner ring
- disc spring
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Abstract
The utility model discloses a bearing support structure capable of preventing inner and outer rings of a support bearing from disengaging, which is characterized in that: the supporting structure comprises a bearing seat, the inner wall of the bearing seat is connected with the outer ring of a bearing, a lead screw is connected in the bearing seat in a penetrating manner, the lead screw is connected with the inner ring of the bearing, an inner ring compression ring in contact with the inner ring of the bearing is further sleeved on the lead screw, an outer ring compression ring in contact with the outer ring of the bearing is arranged outside the inner ring compression ring, the outer ring compression ring is fixedly connected on the bearing seat through screws, a pair of disc springs arranged face to face are further sleeved on the lead screw, the disc springs are in contact with the outer end face of the inner ring compression ring, disc spring locking nuts are further arranged on the outer sides of the disc springs, the disc spring locking nuts are in threaded connection at the end of the lead screw, and disc spring washers are further arranged between the disc spring locking nuts and the disc springs.
Description
Technical Field
The utility model relates to a bearing support structure, in particular to a bearing support structure capable of preventing inner and outer rings of a support bearing from disengaging.
Background
Machining centers are the most widely used machine tools and have been used in various industries. With the continuous development of the mechanical industry, the machine tool has higher requirements on various parameters and precision of the machine tool. The precision of each drive shaft as a basic component of the machine tool is required to be higher.
The driving shaft is basically composed of a lead screw, front and rear lead screw supporting bearings, a bearing seat, a driving motor, a coupling and the like. When the driving motor drives the lead screw to rotate, the lead screw drives the load which can act on the lead screw to convert the rotary motion into linear motion, in the process, the temperature of the lead screw can rise, the lead screw can generate thermal extension due to the temperature rise, the inner ring of the bearing which is directly connected with the lead screw can move along the axial direction of the lead screw, so that the inner ring and the outer ring of the bearing are separated, and once the condition occurs, the precision of the lead screw and the service life of the bearing can be directly influenced. There is therefore a need for a method or apparatus that addresses the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art, and provides the bearing support structure which is simple in structure, ingenious in design and reasonable in layout and can prevent the inner ring and the outer ring of the bearing from being separated from each other after the lead screw is heated and extended.
The technical solution of the utility model is as follows: the utility model provides a can prevent bearing support structure that support bearing inner and outer ring declutched which characterized in that: the supporting structure comprises a bearing seat 1, the inner wall of the bearing seat 1 is connected with an outer ring of a bearing 2, a lead screw 3 is connected in the bearing seat 1 in a penetrating manner, the lead screw 3 is connected with an inner ring of the bearing 2, an inner ring compression ring 4 in contact with the inner ring of the bearing 2 is further sleeved on the lead screw 3, an outer ring compression ring 5 in contact with the outer ring of the bearing 2 is arranged outside the inner ring compression ring 4, the outer ring compression ring 5 is fixedly connected on the bearing seat 1 through a screw 6, a pair of disc springs 7 arranged face to face are further sleeved on the lead screw 3, the disc springs 7 are in contact with the outer end face of the inner ring compression ring 4, disc spring locking nuts 8 are further arranged on the outer sides of the disc springs 7, the disc spring locking nuts 8 are in threaded connection with the end of the lead screw 3, and disc washers 9 are further arranged between the disc spring locking nuts 8 and the disc springs 7.
Compared with the prior art, the utility model has the following advantages:
the bearing supporting structure capable of preventing the inner ring and the outer ring of the supporting bearing from being disengaged in the structural form has the advantages of simple structure, ingenious design and reasonable layout, and aims at solving the problems that the inner ring of the traditional bearing for supporting the lead screw is easily separated from the outer ring under the action of the lead screw after the lead screw is subjected to thermal extension, so that the transmission precision of the lead screw is influenced, the service life of the bearing is shortened, noise is generated and the like. A pair of disc springs arranged face to face are utilized to provide positive pre-pressure for an inner ring of the bearing, so that when a lead screw is heated and elongated, the relative positions of the inner ring and an outer ring of the bearing cannot change under the action of the pair of disc springs, and the bearing can work normally. The support structure has the advantages of simple manufacturing process and low manufacturing cost, so the support structure has various advantages, is particularly suitable for popularization and application in the field, and has very wide market prospect.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The following description will explain embodiments of the present invention with reference to the accompanying drawings. As shown in fig. 1: a bearing supporting structure capable of preventing the inner ring and the outer ring of a supporting bearing from being separated comprises a bearing seat 1, the inner wall of the bearing seat 1 is connected with the outer ring of a bearing 2, a lead screw 3 is connected in the bearing seat 1 in a penetrating way, the lead screw 3 is connected with an inner ring of the bearing 2, an inner ring compression ring 4 contacted with the inner ring of the bearing 2 is sleeved on the screw rod 3, an outer ring compression ring 5 contacted with the outer ring of the bearing 2 is arranged outside the inner ring compression ring 4, the outer ring compression ring 5 is fixedly connected on the bearing seat 1 through a screw 6, a pair of disc springs 7 which are arranged face to face are sleeved on the screw rod 3, the disc springs 7 are contacted with the outer end face of the inner ring compression ring 4, and the outer side of the disc spring 7 is also provided with a disc spring locking nut 8, the disc spring locking nut 8 is in threaded connection with the end of the screw rod 3, and a disc spring washer 9 is also arranged between the disc spring locking nut 8 and the disc spring 7.
The working process of the bearing support structure capable of preventing the inner ring and the outer ring of the support bearing from being separated is as follows: in a normal state, an outer ring of a bearing 2 is connected with a bearing seat 1, an inner ring is connected with a lead screw 3, the whole bearing 2 is pressed by an inner ring pressing ring 4 and an outer ring pressing ring 5, wherein a pair of disc springs 7 arranged face to face are arranged on the outer side of the inner ring pressing ring 4, the disc springs 7 can provide certain pre-tightening pressure for the inner ring pressing ring 4,
according to the following formula, the value of the pre-pressure F required to be provided by the disc spring 7 can be calculated,
F=△L× Ks
wherein, Delta L is the thermal elongation of the screw rod, and Ks is the rigidity of the screw rod;
the following steps are provided:
△L=P×θ×L,Ks=πdr²E/4L，
wherein P is the thermal expansion coefficient, theta is the average temperature of the lead screw, and L is the axial length of the lead screw; dr is the diameter of the screw, and E is the rigid-elastic coefficient of the screw.
The pretensioning force required by pretensioning of the screw rod 3 can be calculated through the formula, and the disc spring 7 is compressed to a certain degree according to the pretensioning force and is installed in place through the disc spring locking nut 8.
When the lead screw 3 is thermally extended in the working process, the lead screw 3 is integrally extended and drives the disc spring locking nut 8 at the end of the lead screw to generate tiny displacement, but the disc spring 7 can always provide pressure for the inner ring compression ring 4, so that the pressure can ensure that the inner ring compression ring 4 is pressed on the inner ring of the bearing 2 and prevent the inner ring compression ring from moving together with the lead screw 3, namely, under the action of the disc spring 7 and the inner ring compression ring 4, the relative position between the inner ring and the outer ring of the bearing 2 is unchanged, and tiny relative displacement occurs between the inner ring and the lead screw in the axial direction of the lead screw, thereby ensuring that the bearing is always in a normal working state.
Claims (1)
1. The utility model provides a can prevent bearing support structure that support bearing inner and outer ring declutched which characterized in that: the supporting structure comprises a bearing seat (1), the inner wall of the bearing seat (1) is connected with an outer ring of a bearing (2), a lead screw (3) is connected in the bearing seat (1) in a penetrating manner, the lead screw (3) is connected with an inner ring of the bearing (2), an inner ring compression ring (4) in contact with the inner ring of the bearing (2) is further sleeved on the lead screw (3), an outer ring compression ring (5) in contact with the outer ring of the bearing (2) is arranged outside the inner ring compression ring (4), the outer ring compression ring (5) is fixedly connected on the bearing seat (1) through a screw (6), a pair of disc springs (7) arranged face to face is further sleeved on the lead screw (3), the disc springs (7) are in contact with the outer end face of the inner ring compression ring (4), a disc spring locking nut (8) is further arranged outside the disc springs (7), and the disc spring locking nut (8) is in threaded connection at the end of the lead screw (3), and a disc spring washer (9) is arranged between the disc spring locking nut (8) and the disc spring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120733235.7U CN216542128U (en) | 2021-04-12 | 2021-04-12 | Bearing support structure capable of preventing inner ring and outer ring of support bearing from disengaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120733235.7U CN216542128U (en) | 2021-04-12 | 2021-04-12 | Bearing support structure capable of preventing inner ring and outer ring of support bearing from disengaging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216542128U true CN216542128U (en) | 2022-05-17 |
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ID=81537325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120733235.7U Active CN216542128U (en) | 2021-04-12 | 2021-04-12 | Bearing support structure capable of preventing inner ring and outer ring of support bearing from disengaging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216542128U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116021322A (en) * | 2023-03-29 | 2023-04-28 | 湖南中大创远数控装备有限公司 | Ball screw prestretching structure convenient for secondary assembly, machine tool and method |
-
2021
- 2021-04-12 CN CN202120733235.7U patent/CN216542128U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116021322A (en) * | 2023-03-29 | 2023-04-28 | 湖南中大创远数控装备有限公司 | Ball screw prestretching structure convenient for secondary assembly, machine tool and method |
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