CN211161950U - Electric spindle duplex bearing supporting structure - Google Patents
Electric spindle duplex bearing supporting structure Download PDFInfo
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- CN211161950U CN211161950U CN201921975037.0U CN201921975037U CN211161950U CN 211161950 U CN211161950 U CN 211161950U CN 201921975037 U CN201921975037 U CN 201921975037U CN 211161950 U CN211161950 U CN 211161950U
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- bearing
- electric spindle
- cover
- end cover
- main shaft
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Abstract
The utility model discloses an electricity main shaft duplex bearing structure, establish bearing frame, cover on the bearing and establish the front end housing on the copper mold insert bearing at bearing frame with the cover including the cover, establish at spindle bearing, cover, be interference fit between bearing frame and the copper mold insert bearing, be interference fit between copper mold insert bearing and the front end housing. The bearing is a deep groove ball bearing. The copper insert bearing is a self-lubricating inlay bearing. The front end cover is fastened on the electric spindle stator through bolts. The device has simple structure, and can effectively reduce the axial run-out and the radial run-out of the mandrel.
Description
Technical Field
The utility model belongs to the technical field of electrical equipment and specifically relates to an electricity main shaft duplex bearing structure is related to.
Background
The electric main shaft is a new technology which integrates a machine tool main shaft and a main shaft motor into a whole and appears in the field of numerical control machine tools, and the electric main shaft, a linear motor technology and a high-speed cutter technology push high-speed processing to a new era. The electric spindle comprises the electric spindle and accessories thereof, and comprises the electric spindle, a high-frequency conversion device, an oil mist lubricator, a cooling device, a built-in encoder, a tool changer and the like. The rotor of the motor is directly used as the main shaft of the machine tool, the shell of the main shaft unit is the motor base, and the motor and the main shaft of the machine tool are integrated by matching with other parts.
The electric main shaft comprises a shell-free motor, a main shaft, a bearing, a main shaft unit shell, a driving module, a cooling device and the like. The rotor of the motor is integrated with the main shaft by adopting a press-fit method, and the main shaft is supported by the front bearing and the rear bearing. The stator of the motor is mounted in the housing of the spindle unit by means of a cooling jacket. The speed change of the spindle is controlled by the spindle drive module, while the temperature rise in the spindle unit is limited by the cooling device. The rear end of the main shaft is provided with a speed measuring and angle measuring displacement sensor, and the inner taper hole and the end surface at the front end are used for installing a cutter.
Because the electric spindle integrates the motor into the spindle unit, and the rotating speed is very high, axial runout and radial runout can occur during operation, and particularly the axial runout and radial runout at the front end of the spindle are particularly prominent.
Disclosure of Invention
In view of this, it is necessary to provide a dual bearing support structure for an electric spindle, which has a simple structure and good stability.
In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides an electricity main shaft duplex bearing structure, includes that the cover establishes the bearing on the dabber, establishes the bearing frame on the bearing, establishes the copper mold insert bearing on the bearing frame and establishes the front end housing on the copper mold insert bearing, be interference fit between bearing frame and the copper mold insert bearing, be interference fit between copper mold insert bearing and the front end housing.
Further, the bearing is a deep groove ball bearing.
Furthermore, the copper insert bearing is a self-lubricating embedded bearing.
Further, the front end cover is fastened on the electric spindle stator through bolts.
Furthermore, the bottom of the front end cover is provided with an annular sealing plate, and the sealing plate seals a gap between the front end cover and the bearing seat.
Compared with the prior art, the utility model discloses following beneficial effect has: this device establishes deep groove ball bearing and copper mold insert bearing through the cover in proper order from inside to outside at the dabber front end, through duplex bearing support structure, has played better effect to the stability of dabber front end, has effectually reduced axial runout and the runout of dabber front end under high-speed rotational speed.
In order to make the aforementioned and other objects, features and advantages of the invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is the schematic structural diagram of the copper insert bearing in the embodiment of the present invention.
In the figure: 1-mandrel, 2-deep groove ball bearing, 3-bearing seat, 4-copper insert bearing, 41-ball, 5-front end cover and 6-sealing plate.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1-2, a motorized spindle dual-bearing support structure includes a deep groove ball bearing 2 sleeved on a mandrel 1, a bearing seat 3 sleeved on the deep groove ball bearing 2, a copper insert bearing 4 sleeved on the bearing seat 3, and a front end cover 5 sleeved on the copper insert bearing 4, wherein the bearing seat 3 and the copper insert bearing 4 are in interference fit, and the copper insert bearing 4 and the front end cover 5 are in interference fit.
In this embodiment, copper insert bearing 4 is self-lubricating inlay bearing, is provided with ball 41 on the copper insert bearing 4 lateral wall, and ball 41 is the oily solid lubricant who gives first place to graphite. The lubricating area accounts for about 25%, a layer of solid-liquid mixed lubricating film is generated during the operation of the bearing, the effect of reducing friction is achieved, and the performance of the copper sleeve is greatly improved.
In this embodiment, the front end cover 5 is fastened to the electric spindle stator by bolts.
In this embodiment, the bottom of the front end cover 5 is provided with an annular sealing plate 6, the sealing plate 6 seals a gap between the front end cover 5 and the bearing seat 3, the cross section of the sealing plate 6 is L-shaped, the bottom of the front end cover 5 is provided with an annular clamping portion, and the sealing plate 6 is fastened at the bottom of the clamping portion through bolts.
Through the duplex bearing structure of deep groove ball bearing 2 and copper mold insert bearing 4, played better effect to the stability of dabber front end, the effectual dabber front end that has reduced is at axial runout and the radial runout under high-speed rotational speed.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed by the preferred embodiment, it is not limited to the present invention, and any person skilled in the art can make modifications or changes equivalent to the equivalent embodiments by utilizing the above disclosed technical contents without departing from the technical scope of the present invention, but all the modifications, changes and changes of the technical spirit of the present invention made to the above embodiments are also within the scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides an electricity main shaft duplex bearing structure which characterized in that: the bearing is sleeved on the mandrel, the bearing seat is sleeved on the bearing, the copper insert bearing is sleeved on the bearing seat, and the front end cover is sleeved on the copper insert bearing.
2. The dual-bearing electric spindle support structure according to claim 1, wherein: the bearing is a deep groove ball bearing.
3. The dual-bearing electric spindle support structure according to claim 1, wherein: the copper insert bearing is a self-lubricating inlay bearing.
4. The dual-bearing electric spindle support structure according to claim 1, wherein: the front end cover is fastened on the electric spindle stator through bolts.
5. The dual-bearing electric spindle support structure according to claim 1, wherein: the bottom of the front end cover is provided with an annular sealing plate which seals a gap between the front end cover and the bearing seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921975037.0U CN211161950U (en) | 2019-11-15 | 2019-11-15 | Electric spindle duplex bearing supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921975037.0U CN211161950U (en) | 2019-11-15 | 2019-11-15 | Electric spindle duplex bearing supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211161950U true CN211161950U (en) | 2020-08-04 |
Family
ID=71828730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921975037.0U Active CN211161950U (en) | 2019-11-15 | 2019-11-15 | Electric spindle duplex bearing supporting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211161950U (en) |
-
2019
- 2019-11-15 CN CN201921975037.0U patent/CN211161950U/en active Active
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230504 Address after: No. 38-101, Zucuobianli, Xitang, Tong'an District, Xiamen, Fujian Province, 361000 Patentee after: Yonghexing (Xiamen) Precision Machinery Co.,Ltd. Address before: No. 38, Dingdian Dian, Sudian Village, Hongtang Town, Tong'an District, Xiamen City, Fujian Province, 361000 Patentee before: Xiamen xintongxiang CNC Technology Co.,Ltd. |