CN103762773A - Bearing axial spring pre-tightening structure of servo motor - Google Patents
Bearing axial spring pre-tightening structure of servo motor Download PDFInfo
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- CN103762773A CN103762773A CN201310755528.5A CN201310755528A CN103762773A CN 103762773 A CN103762773 A CN 103762773A CN 201310755528 A CN201310755528 A CN 201310755528A CN 103762773 A CN103762773 A CN 103762773A
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- spring
- bearing
- tightening structure
- flange
- adapter
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Abstract
The invention relates to a bearing axial spring pre-tightening structure of a servo motor. The bearing axial spring pre-tightening structure comprises a motor body, a center shaft and bearings. The center shaft is transversely installed in the middle of the motor body. The two ends of the motor body are provided with a front flange and a rear flange respectively. The two ends of the center shaft are connected with the front flange and the rear flange through the first bearing and the second bearing respectively, wherein the first bearing and the second bearing are connected in a sleeved mode. The bearing axial spring pre-tightening structure is characterized in that a first spring adaptor is clamped between the axial side face of the first bearing and the inside wall of the front flange, a spring is axially installed inside the first spring adaptor, a second spring adaptor is tightly attached to the axial side face of the second bearing, and the second spring adaptor is connected with the inside wall of the rear flange through an axial spring. The bearing axial spring pre-tightening structure is simple in structure, the springs and the spring adaptors are axially supported against the bearings, mechanical errors are eliminated, and axial offset of the bearings is avoided.
Description
Technical field
The present invention relates to electric machine structure field, particularly relate to a kind of bearing shaft of servomotor to spring pre-tightening structure.
Background technology
In servomotor technical field, mostly the central rotating shaft of servomotor is to be connected with the flange at housing two ends by bearing, and mostly the axial location of bearing is to adopt locking nut to compress, but owing to more or less can produce machine error in the machining of motor or assembling process, the accumulation of these machine errors will cause the pretension of bearing insufficient, generation moves axially, particularly when motor is vertically installed, machine error will be concentrated to one end accumulation, the axial dipole field of bearing can cause the rotation of central shaft unstable, produce wearing and tearing, affect the normal operation of motor.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of bearing shaft of servomotor to spring pre-tightening structure, simple in structure, and employing spring and spring adapter to withstanding, overcome machine error by bearing shaft, prevent the axial dipole field of bearing.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of bearing shaft of servomotor to spring pre-tightening structure, comprise motor fuselage, central shaft and bearing, the middle part of described motor fuselage is horizontally installed with central shaft, the two ends of described motor fuselage are separately installed with forward flange and rear flange, the two ends of described central shaft are connected with forward flange and rear flange with bearing II by the bearing I of socket respectively, it is characterized in that, between the described axial sides of bearing I and the madial wall of forward flange, clamped spring adapter I, this spring adapter I inside is axially installed with spring, the axial sides of described bearing II is glued with spring adapter II, between this spring adapter II and the madial wall of rear flange, by axial arranged spring, be connected.
Described spring adapter I is comprised of the spring between two annular pressing plate and annular pressing plates that are vertically arranged side by side, described spring is around annular pressing plate even circumferential layout, and two annular pressing plates withstand with the axial sides of bearing I and the madial wall of forward flange respectively.
Described spring adapter II ringwise, is furnished with several springs along even circumferential between the madial wall of itself and rear flange.
In gap between described forward flange and central shaft, fill in locking nut is installed, this locking nut and bearing I are withstood and are radially spacing to spring adapter I.
The outside of described rear flange is provided with back shroud between two parties.
beneficial effect
The present invention relates to a kind of bearing shaft of servomotor to spring pre-tightening structure, simple in structure, spring is evenly distributed on spring adapter, spring adapter and flange are assembled together, and make bearing rigidity degree abundance, and assembly structure is simple, stress point is even, during use, stationarity is strong, overcomes machine error, prevents the axial dipole field of bearing.
Accompanying drawing explanation
Fig. 1 is that master of the present invention looks sectional structure chart;
Fig. 2 is that spring adapter I of the present invention is installed enlarged drawing;
Fig. 3 is that spring adapter II of the present invention is installed enlarged drawing.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read the content of the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
As Figure 1-3, embodiments of the present invention relate to a kind of bearing shaft of servomotor to spring pre-tightening structure, comprise motor fuselage 9, central shaft 10 and bearing, the middle part of described motor fuselage 9 is horizontally installed with central shaft 10, the two ends of described motor fuselage 9 are separately installed with forward flange 5 and rear flange 7, the two ends of described central shaft 10 are connected with forward flange 5 and rear flange 7 with bearing II 6 by the bearing I 4 of socket respectively, between the axial sides of described bearing I 4 and the madial wall of forward flange 5, clamped spring adapter I 1, this spring adapter I 1 inside is axially installed with spring 2, the axial sides of described bearing II 6 is glued with spring adapter II 11, between this spring adapter II 11 and the madial wall of rear flange 7, by axial arranged spring 2, be connected.
Described spring adapter I 1 is comprised of the spring 2 between two annular pressing plate and annular pressing plates that are vertically arranged side by side, described spring 2 is around annular pressing plate even circumferential layout, and two annular pressing plates withstand with the axial sides of bearing I 4 and the madial wall of forward flange 5 respectively.
Described spring adapter II 11 ringwise, is furnished with several springs 2 along even circumferential between the madial wall of itself and rear flange 7.
In gap between described forward flange 5 and central shaft 10, fill in locking nut 3 is installed, this locking nut 3 withstands with bearing I 4 and is radially spacing to spring adapter I 1.
The outside of described rear flange 7 is provided with back shroud 8 between two parties.
Claims (5)
1. the bearing shaft of a servomotor is to spring pre-tightening structure, comprise motor fuselage (9), central shaft (10) and bearing, the middle part of described motor fuselage (9) is horizontally installed with central shaft (10), the two ends of described motor fuselage (9) are separately installed with forward flange (5) and rear flange (7), the two ends of described central shaft (10) are connected with forward flange (5) and rear flange (7) with bearing II (6) by the bearing I (4) of socket respectively, it is characterized in that, between the axial sides of described bearing I (4) and the madial wall of forward flange (5), clamped spring adapter I (1), this spring adapter I (1) inside is axially installed with spring (2), the axial sides of described bearing II (6) is glued with spring adapter II (11), between this spring adapter II (11) and the madial wall of rear flange (7), by axial arranged spring (2), be connected.
2. the bearing shaft of a kind of servomotor according to claim 1 is to spring pre-tightening structure, it is characterized in that: described spring adapter I (1) is comprised of the spring (2) between two annular pressing plate and annular pressing plates that are vertically arranged side by side, described spring (2) is around annular pressing plate even circumferential layout, and two annular pressing plates withstand with the axial sides of bearing I (4) and the madial wall of forward flange (5) respectively.
3. the bearing shaft of a kind of servomotor according to claim 1 is to spring pre-tightening structure, it is characterized in that: described spring adapter II (11) ringwise, is furnished with several springs (2) along even circumferential between the madial wall of itself and rear flange (7).
4. the bearing shaft of a kind of servomotor according to claim 1 is to spring pre-tightening structure, it is characterized in that: in the gap between described forward flange (5) and central shaft (10), fill in locking nut (3) is installed, this locking nut (3) withstands with bearing I (4) and be radially spacing to spring adapter I (1).
5. the bearing shaft of a kind of servomotor according to claim 1, to spring pre-tightening structure, is characterized in that: the outside of described rear flange (7) is provided with back shroud (8) between two parties.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310755528.5A CN103762773A (en) | 2013-12-31 | 2013-12-31 | Bearing axial spring pre-tightening structure of servo motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310755528.5A CN103762773A (en) | 2013-12-31 | 2013-12-31 | Bearing axial spring pre-tightening structure of servo motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103762773A true CN103762773A (en) | 2014-04-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310755528.5A Pending CN103762773A (en) | 2013-12-31 | 2013-12-31 | Bearing axial spring pre-tightening structure of servo motor |
Country Status (1)
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| CN (1) | CN103762773A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4892423A (en) * | 1985-12-23 | 1990-01-09 | Hitachi, Ltd. | Rotary actuator and fabrication process therefor |
| CN2266222Y (en) * | 1996-02-05 | 1997-10-29 | 中国纺织科学研究院 | Motor specially adapted for thermal draw-off roller |
| EP0943842A1 (en) * | 1998-03-19 | 1999-09-22 | Mannesmann VDO Aktiengesellschaft | Worm reduction gear |
| CN101010854A (en) * | 2004-08-25 | 2007-08-01 | 罗伯特·博世有限公司 | Electric machine comprising an axial spring-loaded element |
| WO2013091954A2 (en) * | 2011-12-23 | 2013-06-27 | Robert Bosch Gmbh | Electric machine having an axial prestress between a rolling bearing and a housing part, and method for operating such an electric machine |
| CN204371955U (en) * | 2014-12-18 | 2015-06-03 | 重庆赛力盟电机有限责任公司 | Water turbine or motor bearings axial pretightening device |
-
2013
- 2013-12-31 CN CN201310755528.5A patent/CN103762773A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4892423A (en) * | 1985-12-23 | 1990-01-09 | Hitachi, Ltd. | Rotary actuator and fabrication process therefor |
| CN2266222Y (en) * | 1996-02-05 | 1997-10-29 | 中国纺织科学研究院 | Motor specially adapted for thermal draw-off roller |
| EP0943842A1 (en) * | 1998-03-19 | 1999-09-22 | Mannesmann VDO Aktiengesellschaft | Worm reduction gear |
| CN101010854A (en) * | 2004-08-25 | 2007-08-01 | 罗伯特·博世有限公司 | Electric machine comprising an axial spring-loaded element |
| WO2013091954A2 (en) * | 2011-12-23 | 2013-06-27 | Robert Bosch Gmbh | Electric machine having an axial prestress between a rolling bearing and a housing part, and method for operating such an electric machine |
| CN204371955U (en) * | 2014-12-18 | 2015-06-03 | 重庆赛力盟电机有限责任公司 | Water turbine or motor bearings axial pretightening device |
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Application publication date: 20140430 |