CN201105324Y - Electrical main spindle - Google Patents
Electrical main spindle Download PDFInfo
- Publication number
- CN201105324Y CN201105324Y CNU2007201260181U CN200720126018U CN201105324Y CN 201105324 Y CN201105324 Y CN 201105324Y CN U2007201260181 U CNU2007201260181 U CN U2007201260181U CN 200720126018 U CN200720126018 U CN 200720126018U CN 201105324 Y CN201105324 Y CN 201105324Y
- Authority
- CN
- China
- Prior art keywords
- rotor
- spindle
- bearing
- main shaft
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000005461 lubrication Methods 0.000 description 5
- 239000003595 mist Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses a motorized spindle, comprising a stator casing component, which is characterized in that a spindle is arranged at the axis position of the stator casing component; a grip component is arranged at the front end of the spindle; a rotor is arranged at the central section, and connected with the stator casing component via a front bearing and a front bearing seat arranged at the front part of the rotor as well as a supporting bearing and a supporting bearing seat arranged at the rear part of the rotor; the diameter of the spindle at the position where the front bearing is arranged is less than that of front end of the spindle with grip component; a rotor sleeve with a locking screw is arranged at the axis position of the rotor; the rotor is fixedly connected with the spindle via the rotor sleeve. The motorized spindle has the advantages of eliminating the structural limit that the inner diameter of the working end must be greater than or equal to the maximum axis diameter of the working end, reducing the grade of the bearing type at the working end when the rigidity and the structure of the motorized spindle is permitted, increasing the rotational speed of the motorized spindle by one to two orders of magnitude, prolonging the service life of the motorized spindle since the rotational inertia of the bearing is decreased, and reducing the manufacturing cost.
Description
Technical field
The utility model relates to a kind of mechanical device, particularly a kind of electric main shaft.
Background technology
In electric principal shaft product series,, generally be designed to taper hole or taper shank form at present because the main shaft working end of electric main shaft wants clamping device, cutter to participate in cutting or grinding.Because clamping instrument, the taper shank of cutter or the size restrictions of taper hole, make the working end axle external diameter of main shaft be greater than taper hole or taper shank full-size, and selected working end bearing is greater than the working end greatest axis external diameter that equals main shaft, thereby bearing is inserted in by the working end, is installed on the main shaft.Under the constant situation of other condition, the rotating speed of electricity main shaft is subjected to the restriction of large size bearing limit speed, and in order to improve the limit speed of large size bearing, people have adopted many methods, as water-cooled cooling, mist of oil or oil-air lubrication cooling etc., be used for improving the bearing lubrication environment.Therefore, along with the raising of electric main shaft rated speed, the electric chief axis system structure will be more and more complicated, also can be more and more high to the requirement of bearing, thus manufacturing cost is multiplied.
The utility model content
The purpose of this utility model is the deficiency that exists at prior art, provides a kind of reasonable in design, simple in structure, and processing easily, installation also can improve the speed of mainshaft, guarantee the electric main shaft of running accuracy and rigidity.
The technical solution of the utility model is: a kind of electric main shaft, comprise stator case assembly 7, the axial location that is positioned at stator case assembly 7 is provided with main shaft 2, the front end of described main shaft 2 is equipped with chuck component 1, its middle part is provided with rotor 8, and be connected with stator case assembly 7 with supporting bearing base 12 by the spring bearing 11 that is installed in its anterior fore bearing 4, front-end bearing pedestal 5 and is installed in its rear portion, it is characterized in that: be positioned at the diameter of the diameter of the main shaft 2 that fore bearing 4 places are installed less than main shaft 2 front ends that chuck component 1 is installed; The rotor cover 9 have lock-screw 10 is installed on the axial location of described rotor 8, and rotor 8 is fixedlyed connected with main shaft 2 with lock-screw 10 by rotor cover 9.
The utility model compared with prior art has the following advantages: the utility model is reasonable in design, simple in structure, it has been broken through present electric main shaft working end bearing inner race internal diameter and has been greater than the structural restriction that equals the maximum diameter of axle in outer end, working end, under electric main shaft rigidity and main axle structure admissible condition, in the dmn of bearing value one regularly, select for use d (internal diameter of the bearing inner race) bearing that value is little that the electric speed of mainshaft is improved, change mist of oil or oil-air lubrication into grease lubrication, thereby simplify the structure, reduced cost; In addition, adopt on the electric main shaft of mist of oil or oil-air lubrication, select for use the as far as possible little bearing of d value that the electric speed of mainshaft is improved, electric chief axis system product price ratio is greatly improved in former the needs.Because rotor assembly is connected with lock-screw by the rotor cover with main shaft, therefore assembles, dismantles very convenient.Rotor cover as transition piece makes the size design of motor become more flexible.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
The utility model will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model comprises stator case assembly 7, the axial location that is positioned at stator case assembly 7 is provided with main shaft 2, the front end of described main shaft 2 is equipped with chuck component 1, its middle part is provided with rotor 8, and be connected with stator case assembly 7 with supporting bearing base 12 by the spring bearing 11 that is installed in its anterior fore bearing 4, front-end bearing pedestal 5 and is installed in its rear portion, it is characterized in that: be positioned at the diameter of the diameter of the main shaft 2 that fore bearing 4 places are installed less than main shaft 2 front ends that chuck component 1 is installed; The rotor cover 9 have lock-screw 10 is installed on the axial location of described rotor 8, and rotor 8 is fixedlyed connected with main shaft 2 with lock-screw 10 by rotor cover 9.
Claims (1)
1, a kind of electric main shaft, comprise stator case assembly (7), the axial location that is positioned at stator case assembly (7) is provided with main shaft (2), the front end of described main shaft (2) is equipped with chuck component (1), its middle part is provided with rotor (8), and by being installed in its anterior fore bearing (4), front-end bearing pedestal (5) is connected with stator case assembly (7) with supporting bearing base (12) with the spring bearing that is installed in its rear portion (11), it is characterized in that: be positioned at diameter that the main shaft (2) that fore bearing (4) locates the is installed diameter less than the main shaft that chuck component (1) is installed (2) front end; The rotor cover (9) that has lock-screw (10) is installed on the axial location of described rotor (8), and rotor (8) is fixedlyed connected with main shaft (2) with lock-screw (10) by rotor cover (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201260181U CN201105324Y (en) | 2007-11-27 | 2007-11-27 | Electrical main spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201260181U CN201105324Y (en) | 2007-11-27 | 2007-11-27 | Electrical main spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201105324Y true CN201105324Y (en) | 2008-08-27 |
Family
ID=39957115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201260181U Expired - Fee Related CN201105324Y (en) | 2007-11-27 | 2007-11-27 | Electrical main spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201105324Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909396A (en) * | 2012-10-19 | 2013-02-06 | 上海大学 | High-speed electric spindle with outer rotor structure |
| CN107921547A (en) * | 2015-08-05 | 2018-04-17 | 日本精工株式会社 | Compound ball bearing and main shaft device and lathe |
-
2007
- 2007-11-27 CN CNU2007201260181U patent/CN201105324Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909396A (en) * | 2012-10-19 | 2013-02-06 | 上海大学 | High-speed electric spindle with outer rotor structure |
| CN107921547A (en) * | 2015-08-05 | 2018-04-17 | 日本精工株式会社 | Compound ball bearing and main shaft device and lathe |
| US10302128B2 (en) | 2015-08-05 | 2019-05-28 | Nsk Ltd. | Combined ball bearing, main spindle device, and machine tool |
| CN107921547B (en) * | 2015-08-05 | 2019-10-15 | 日本精工株式会社 | Combined ball bearing and spindle units, and machine tools |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080827 Termination date: 20111127 |