CN101776126B - Method for reducing vibration or bending deformation of spindle rotor in high-speed electric spindle - Google Patents
Method for reducing vibration or bending deformation of spindle rotor in high-speed electric spindle Download PDFInfo
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- CN101776126B CN101776126B CN2010100302126A CN201010030212A CN101776126B CN 101776126 B CN101776126 B CN 101776126B CN 2010100302126 A CN2010100302126 A CN 2010100302126A CN 201010030212 A CN201010030212 A CN 201010030212A CN 101776126 B CN101776126 B CN 101776126B
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Abstract
The invention relates to a method for reducing vibration or bending deformation of a spindle rotor in a high-speed electric spindle. Supporting points at two ends of the spindle rotor (5) are respectively provided with an elastic supporting ring (2) and a bearing seat (3), which have the same structures; when impact load which is triggered by vibration generated by high-speed rotation of the spindle rotor is transmitted to the elastic supporting ring through a bearing (4) and the bearing seat, and an Y-shaped raised wing of the elastic supporting ring has elastic deformation which can absorb part of vibrating energy, so the impact load among the bearing, the bearing seat and a sleeve (1) is lightened; as the Y-shaped raised wing of the elastic supporting ring has elasticity, rigid restriction borne by the supporting points at the two ends of the spindle rotor is weakened; therefore, the vibration or the bending deformation of the spindle rotor is effectively released; the self-centering effect of high-speed rotation of the spindle rotor is enhanced; and the method effectively prevents the bending deformation of the spindle rotor, reduces the force borne by the bearing, and improves the service life of the high-speed electric spindle.
Description
Technical field
The invention belongs to the mechanical vibration technical field, relate in particular to a kind of minimizing high-speed electric main shaft inner main axis rotor oscillation or diastrophic method.
Background technique
The structure proximate of high-speed electric main shaft is in motor, but its function has essential distinction with motor.The sleeve of high-speed electric main shaft is similar to the support of motor, and the spindle rotor of high-speed electric main shaft is similar to the rotor of motor, spindle rotor by Bearing Installation in sleeve.The overall structure of high-speed electric main shaft is compact, and its rotating speed is usually above the rotating speed of motor, and spindle rotor stability of rotation, spindle rotor generally have some specific function and not only be purpose with the transmission.
Along with progress of science and technology, industrial rotational velocity to high-speed electric main shaft requires more and more higher.When spindle rotor near or when reaching certain critical high speed rotating speed, the vibration of spindle rotor will produce tangible increase, vibration increase amplitude causes the spindle rotor cisco unity malfunction when light, vibration increase amplitude causes the fracture that bends of damage of bearings or spindle rotor when big.The vibration cause of increased mainly ascribe to the spindle rotor rotating speed near or when arriving certain critical speed of rotation, rotor resonates.Owing to only connect between spindle rotor and the sleeve and do not have damping device by bearing, the spindle rotor two ends are subjected to the rigid constraint of bearing and sleeve, the vibration bending deflection that produces when causing electric main shaft high speed rotating almost can not get discharging, thereby cause main shaft bending deflection to increase, bearing load increases, and vibration increases.
For many years, increasing the carrying capacity that damping device can obviously reduce the vibration under the high-speed condition and reduce bearing between spindle rotor and the sleeve to studies show that of high-speed electric main shaft.
Summary of the invention
In order to address the above problem, the invention provides a kind of minimizing high-speed electric main shaft inner main axis rotor oscillation or diastrophic method, this method can reduce spindle rotor and produce vibration or occur bending and deformation the life-span of raising high-speed electric main shaft.
For achieving the above object, the present invention adopts following technological scheme:
Described minimizing high-speed electric main shaft inner main axis rotor oscillation or diastrophic method are the identical damping devices of strong point difference configuration structure at the spindle rotor two ends, this damping device comprises elastic support ring and bearing support, on spindle rotor two end supports point, install earlier bearing and by nut fastening it, on the external diameter of bearing, dispose bearing support again, axial width 〉=the bearing width of bearing support+nut width+bearing support rib width, last on the external diameter of bearing support the drive fit elastic support ring, the axial width of the overall width=bearing support of elastic support ring, radially be provided with the Y shape that equates at interval at the inner core of elastic support ring and stick up the wing, pack into the spindle rotor that installs bearing and damping device in the sleeve and fix it by the end cap at two ends, the Y shape of elastic support ring is stuck up the wing and is contacted with sleeve lining is static, the impulsive load that is caused when spindle rotor high speed rotating generation vibration is delivered on the elastic support ring by bearing and bearing support, the Y shape of elastic support ring is stuck up the wing, and resiliently deformable will take place, this elastic deformation energy absorbs a part of vibrational energy, thereby alleviate the impulsive load between bearing and bearing support and the sleeve, because sticking up the wing, the Y shape of elastic support ring has elasticity simultaneously, the rigid constraint that spindle rotor two end supports point is subjected to will be weakened, thereby the vibration bending deflection of spindle rotor is effectively discharged, spindle rotor high speed rotating self contering effect strengthens, effectively prevented the bending deflection of spindle rotor, for the safe handling of high-speed electric main shaft is given security.
Described minimizing high-speed electric main shaft inner main axis rotor oscillation or diastrophic method radially are provided with the Y shape that equates at interval at the inner core of elastic support ring and stick up the wing, at interval each the Y shape that equates to stick up wing width be W; The radial support arms height that Y shape is stuck up wing connection inner core is L
2, the V font support arm A/F that Y shape is stuck up the wing is L, and the formed angle of V font support arm A/F L is a, and V font support arm both sides wall thickness is t, and the guide surface length that V font support arm two ends form is L
1, described guide surface length L
1With the inner core parallel axes.
Described minimizing high-speed electric main shaft inner main axis rotor oscillation or diastrophic method, elastic support ring that its damping device is included and bearing support also can be made into the one shock ring, axial width=the bearing width of one shock ring+nut width+shock ring bearing edge guard width, the inner core of one shock ring radially is provided with the Y shape that equates at interval and sticks up the wing, and it is W that each equal at interval Y shape is stuck up wing width; The radial support arms height that Y shape is stuck up wing connection inner core is L
2, the V font support arm A/F that Y shape is stuck up the wing is L, and the formed angle of V font support arm A/F L is a, and described V font support arm both sides wall thickness is t, and the guide surface length that V font support arm two ends form is L
1, described guide surface length L
1With the inner core parallel axes.
Because adopt aforesaid technological scheme, the present invention has following superiority:
1, the elastic stiffness that different elastic support ring or the employed material difference of one shock ring, Y shape are stuck up the wing is also different.Give regularly when material, change Y shape stick up the V font support arm A/F L of the wing, among the formed angle a of V font support arm A/F L, the V font support arm both sides wall thickness t each or all can obtain different elastic stiffnesss.Therefore, the present invention can come the elastic stiffness that Y shape is stuck up the wing on design flexibility support ring or the shock ring according to different application targets, and the elastic stiffness excursion is very big.
Near the impact energy that produces when 2, elastic support ring of the present invention or one shock ring can absorb high-speed electric main shaft and turn round critical speed of rotation reduces the stressed of bearing, improves the life-span of high-speed electric main shaft.
3, the present invention can make spindle rotor realize the self contering effect.
4, the present invention is simple in structure, compact, can be used for the less high-speed electric main shaft of the useful space.
5, the present invention only needs simple manufacturing mechanism, general skilled worker to produce, and technical threshold is low.
Description of drawings
Fig. 1 is a scheme of installation of the present invention.
Fig. 2 is the structural representation of elastic support ring.
Fig. 3 is the left view of Fig. 2.
Among the above-mentioned figure: the 1-sleeve; The 2-elastic support ring; The 3-bearing support; The 4-bearing; The 5-spindle rotor; The 6-nut.
Embodiment
In conjunction with Fig. 1, minimizing high-speed electric main shaft inner main axis rotor oscillation of the present invention or diastrophic method are the identical damping devices of strong point difference configuration structure at spindle rotor 5 two ends, this damping device comprises elastic support ring 2 and bearing support 3, on spindle rotor 5 two end supports points, install earlier bearing 4 and by nut 6 fastening it, on the external diameter of bearing, dispose bearing support 3 again, axial width 〉=the bearing width of bearing support+nut width+bearing support rib width, last on the external diameter of bearing support drive fit elastic support ring 2, the axial width of the overall width=bearing support of elastic support ring, radially be provided with the Y shape that equates at interval at the inner core of elastic support ring and stick up the wing, pack into the spindle rotor that installs bearing and damping device in the sleeve 1 and fix it by the end cap at two ends, the Y shape of elastic support ring is stuck up the wing and is contacted with sleeve lining is static, the impulsive load that is caused when spindle rotor high speed rotating generation vibration is delivered on the elastic support ring 2 by bearing 4 and bearing support 3, the Y shape of elastic support ring 3 is stuck up the wing, and resiliently deformable will take place, this elastic deformation energy absorbs a part of vibrational energy, thereby alleviate the impulsive load between bearing and bearing support and the sleeve, because sticking up the wing, the Y shape of elastic support ring has elasticity simultaneously, the rigid constraint that spindle rotor two end supports point is subjected to will be weakened, thereby the vibration bending deflection of spindle rotor is effectively discharged, spindle rotor high speed rotating self contering effect strengthens, effectively prevented the bending deflection of spindle rotor, for the safe handling of high-speed electric main shaft is given security.
In conjunction with Fig. 2-3, radially be provided with the Y shape that equates at interval at the inner core of elastic support ring and stick up the wing, at interval each the Y shape that equates to stick up wing width be W.The radial support arms height that Y shape is stuck up wing connection inner core is L
2, the radial support arms transmission power that bearing bore.The V font support arm A/F that Y shape is stuck up the wing is L, the formed angle of V font support arm A/F L is a, V font support arm both sides wall thickness is t, A/F L, angle a and wall thickness t produce elastic stiffness, the impulsive load that spindle rotor high speed rotating generation vibration is caused makes A/F L or angle a can increase or diminish, to absorb a part of vibrational energy.The guide surface length that V font support arm two ends form is L
1, described guide surface length L
1With the inner core parallel axes, described guide surface wall thickness can be chosen wantonly.The configuration guide surface mainly is to guarantee static elastic support ring down or the relative sleeve centering of shock ring guiding function, is easy to install.
With the exception of this, elastic support ring that damping device is included and bearing support also can be made into the one shock ring, and this is at a kind of additional setting under the less situation of high-speed electric main shaft internal structure, also help the designs simplification of high-speed electric main shaft simultaneously.Axial width=the bearing width of one shock ring+nut width+shock ring bearing edge guard width, the inner core of one shock ring radially are provided with the Y shape that equates at interval and stick up the wing, and it is W that each equal at interval Y shape is stuck up wing width.The radial support arms height that Y shape is stuck up wing connection inner core is L
2, the radial support arms transmission power that bearing bore.The V font support arm A/F that Y shape is stuck up the wing is L, the formed angle of V font support arm A/F L is a, V font support arm both sides wall thickness is t, A/F L, angle a and wall thickness t produce elastic stiffness, the impulsive load that spindle rotor high speed rotating generation vibration is caused makes A/F L or angle a can increase or diminish, to absorb a part of vibrational energy.The guide surface length that V font support arm two ends form is L
1, described guide surface length L
1With the inner core parallel axes.The configuration guide surface mainly is the centering guiding function that guarantees static elastic support ring down or the relative sleeve of shock ring, is easy to install.
Above-mentioned Y shape is stuck up wing width W, Y shape is stuck up the radial support arms height L that the wing connects inner core
2, the Y shape V font support arm A/F L, the formed angle of V font support arm A/F L that stick up the wing be the guide surface length L that a, V font support arm both sides wall thickness t and V font support arm two ends form
1Concrete parameter do not have strict the qualification, mainly specifications and models and the rigid design according to high-speed electric main shaft requires decide, follows the structure space of spindle rotor and sleeve closely related.
During installation, spindle rotor 5 two ends are supported by bearing 4, and nut 6 is fixed in bearing 4 on the spindle rotor 5, and bearing 4 is contained in the bearing support 3, and two elastic support rings 2 are enclosed within respectively outside the bearing support 3 spindle rotor 5 is supported in the high-speed electric main shaft sleeve 1.
When spindle rotor 5 high speed rotating were near critical speed of rotation, the vibration that high speed rotating produces was delivered on the sleeve 1 of high-speed electric main shaft through bearing 4, bearing support 3 and elastic support ring 2.In the process of transmitting vibrations, elastic support ring 2 is under the impact loading that produces because of vibration, resiliently deformable will take place in the V font support arm that Y shape is stuck up the wing, absorb the part energy that vibration produces, thereby alleviate bearing support 3 and the directly very stiff and demanding impact load that is caused that connects of sleeve 1.In addition, because elastic support ring 2 exists, the constraint that the two ends of spindle rotor 5 are subjected to will weaken, and high speed rotating self contering effect is taken place, thereby the running of whole high-speed electric main shaft will be stablized safely.
Claims (3)
1. one kind is reduced high-speed electric main shaft inner main axis rotor oscillation or diastrophic method, it is characterized in that: this method is the identical damping device of strong point difference configuration structure at spindle rotor (5) two ends, this damping device comprises elastic support ring (2) and bearing support (3), spindle rotor (5) two end supports point go up install earlier bearing (4) and by nut (6) fastening it, on the external diameter of bearing, dispose bearing support (3) again, axial width 〉=the bearing width of bearing support+nut width+bearing support rib width, drive fit elastic support ring (2) on the external diameter of bearing support (3) at last, the axial width of the overall width=bearing support of elastic support ring, radially be provided with the Y shape that equates at interval at the inner core of elastic support ring (2) and stick up the wing, the spindle rotor (5) that will install bearing (4) and damping device is packed in the sleeve (1) and is fixed it by the end cap at two ends, the Y shape of elastic support ring (2) is stuck up the wing and static contact of sleeve (1) inwall, the impulsive load that is caused when spindle rotor high speed rotating generation vibration is delivered on the elastic support ring by bearing and bearing support, the Y shape of elastic support ring is stuck up the wing, and resiliently deformable will take place, this elastic deformation energy absorbs a part of vibrational energy, thereby alleviate the impulsive load between bearing and bearing support and the sleeve, because sticking up the wing, the Y shape of elastic support ring has elasticity simultaneously, the rigid constraint that spindle rotor two end supports point is subjected to will be weakened, thereby the vibration bending deflection of spindle rotor is effectively discharged, spindle rotor high speed rotating self contering effect strengthens, effectively prevented the bending deflection of spindle rotor, for the safe handling of high-speed electric main shaft is given security.
2. minimizing high-speed electric main shaft inner main axis rotor oscillation as claimed in claim 1 or diastrophic method is characterized in that: the inner core of elastic support ring (2) radially is provided with the Y shape that equates at interval and sticks up the wing, and it is W that each equal at interval Y shape is stuck up wing width; The radial support arms height that Y shape is stuck up wing connection inner core is L
2, the V font support arm A/F that Y shape is stuck up the wing is L, and the formed angle of V font support arm A/F L is a, and V font support arm both sides wall thickness is t, and the guide surface length that V font support arm two ends form is L
1, described guide surface length direction and inner core parallel axes.
3. minimizing high-speed electric main shaft inner main axis rotor oscillation as claimed in claim 1 or diastrophic method, it is characterized in that: elastic support ring (2) and bearing support (3) that damping device is included are made into the one shock ring, axial width=the bearing width of one shock ring+nut width+shock ring bearing edge guard width, the inner core of one shock ring radially is provided with the Y shape that equates at interval and sticks up the wing, and it is W that each equal at interval Y shape is stuck up wing width; The radial support arms height that Y shape is stuck up wing connection inner core is L
2, the V font support arm A/F that Y shape is stuck up the wing is L, and the formed angle of V font support arm A/F L is a, and described V font support arm both sides wall thickness is t, and the guide surface length that V font support arm two ends form is L
1, described guide surface length direction and inner core parallel axes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100302126A CN101776126B (en) | 2010-01-19 | 2010-01-19 | Method for reducing vibration or bending deformation of spindle rotor in high-speed electric spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100302126A CN101776126B (en) | 2010-01-19 | 2010-01-19 | Method for reducing vibration or bending deformation of spindle rotor in high-speed electric spindle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101776126A CN101776126A (en) | 2010-07-14 |
| CN101776126B true CN101776126B (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010100302126A Expired - Fee Related CN101776126B (en) | 2010-01-19 | 2010-01-19 | Method for reducing vibration or bending deformation of spindle rotor in high-speed electric spindle |
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| CN (1) | CN101776126B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167219A (en) * | 2017-11-21 | 2018-06-15 | 上海裕达实业有限公司 | A kind of high speed shafting structure of grease lubrication molecular pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671221A (en) * | 2012-09-10 | 2014-03-26 | 刘大刚 | Elastic supporting fan |
| CN103511550B (en) * | 2013-09-30 | 2015-06-03 | 西安交通大学 | Damper for high-speed oilless bearing rotor system |
| CN107420438A (en) * | 2017-09-20 | 2017-12-01 | 大连派思透平动力科技有限公司 | A kind of elastic shaft bearing |
| CN113020386B (en) * | 2021-03-01 | 2022-03-15 | 上海交通大学 | Multi-stage external rib cylinder rotary extrusion forming equipment and method |
| CN113391290A (en) * | 2021-05-18 | 2021-09-14 | 宁波傲视智绘光电科技有限公司 | Laser radar rotary reflection device and laser radar |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6655847B2 (en) * | 2000-10-04 | 2003-12-02 | Minebea Co., Ltd. | Pivot bearing assembly |
| CN2645070Y (en) * | 2003-08-18 | 2004-09-29 | 无锡机床股份有限公司 | High speed electrical main shaft bearing performance combined test bench |
| CN2833993Y (en) * | 2005-10-28 | 2006-11-01 | 刘森钢 | High-speed electric main shaft with air blasting device |
-
2010
- 2010-01-19 CN CN2010100302126A patent/CN101776126B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6655847B2 (en) * | 2000-10-04 | 2003-12-02 | Minebea Co., Ltd. | Pivot bearing assembly |
| CN2645070Y (en) * | 2003-08-18 | 2004-09-29 | 无锡机床股份有限公司 | High speed electrical main shaft bearing performance combined test bench |
| CN2833993Y (en) * | 2005-10-28 | 2006-11-01 | 刘森钢 | High-speed electric main shaft with air blasting device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167219A (en) * | 2017-11-21 | 2018-06-15 | 上海裕达实业有限公司 | A kind of high speed shafting structure of grease lubrication molecular pump |
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| Publication number | Publication date |
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| CN101776126A (en) | 2010-07-14 |
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Effective date of registration: 20180511 Address after: 471000 No. 1 axis research road, Jianxi science and Technology Industrial Park, Luoyang, Henan Patentee after: Luoyang Bearing Research Institute Address before: 471039 Fenghua Road 6, hi tech Development Zone, Luoyang, Henan. Patentee before: Zhouyan Science and Technology Co., Ltd., Luoyang |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20210119 |