CN101557137B - Electric main shaft of end-face motor - Google Patents
Electric main shaft of end-face motor Download PDFInfo
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- CN101557137B CN101557137B CN2009100503419A CN200910050341A CN101557137B CN 101557137 B CN101557137 B CN 101557137B CN 2009100503419 A CN2009100503419 A CN 2009100503419A CN 200910050341 A CN200910050341 A CN 200910050341A CN 101557137 B CN101557137 B CN 101557137B
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- main shaft
- motor
- electric main
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Abstract
The invention discloses an electric main shaft of an end-face motor, comprising a shell, a motor stator, a motor rotor and a bearing. The electric main shaft is characterized in that the motor stator and the motor rotator are an end-face structure arranged along the axial direction; the motor rotor is arranged on one end of a rotating shaft; and two pairs of angular contact ball bearings of the bearing are arranged on the other end of the rotating shaft to form a cantilever radial bearing. In the electric main shaft, the structure of the motor stator and the motor rotor of the electric main shaft is changed into the end-face structure with arrangement along the axial direction, the motor rotor is arranged on the leftmost end, and the two pairs of the support angular contact ball bearings are arranged on the right end of the rotating shaft. Under realization of normal operation of the electric main shaft, the electric main shaft has better heat radiating effect, and the structure of thebearing is more compact and has better rigidity.
Description
Technical field
The present invention relates to the electric main shaft of electric main shaft, particularly a kind of end-face motor in a kind of electromechanical engineering field.
Background information
The electricity main shaft is electromechanical integration, the functional part of realizing power conversion and output.The motor stator of present electric main shaft and rotor all are nesting type structures, the magnetic flux path at the rotor tooth root place of this structure is the bottleneck shape, and cooling difficulty, and the big calorimetric of rotor generation simultaneously is big to the influence of main shaft bearing, the rotor core utilance is lower, and bearing rigidity is relatively poor.
Thereby need develop a kind of novel electric main shaft, essence by structure changes, overcome the bottleneck shape shortcoming of the magnetic flux path at traditional spindle motor rotor tooth root place, and make the radiating effect of electric main shaft better, minimizing is to the thermal impact of main shaft bearing, make the more compact structure of main shaft bearing simultaneously, rigidity is higher.
Summary of the invention
The objective of the invention is in order to overcome in the present various electric main shaft, rotor is nested in the limitation in the stator, a kind of electric main shaft of end-face motor is provided, make the more compact structure of main shaft bearing, rigidity is better, and the recirculated water that passes through in the main shaft housing is more conducive to reduce the caloric value of rotor, and radiating effect is better like this, minimizing is to the thermal impact of main shaft bearing, prolonged electric main shaft useful life.
For achieving the above object, technical scheme of the present invention is:
A kind of electric main shaft of end-face motor, comprise the end face motor stator, stator winding, the end face rotor, stator casing, rotor case, rotating shaft, stator magnetic conduction steel loop, rotor magnetic conduction steel loop, parts such as rotor winding, the end-surface type structure that it is characterized in that adopting motor stator and rotor to arrange vertically, be that rotor is not to be nested in the stator, but arrange vertically with stator, form the end-surface type structure, wherein rotor is installed in the high order end of rotating shaft, two pairs of bearing angle contact ball bearings are installed in the right-hand member of rotating shaft, when realizing driving electric main axis rotation, make the thermal diffusivity of electric main shaft better, the more compact structure of bearing, rigidity is better.
The structure setting of the electric main shaft of above-mentioned end-face motor is: the end face motor is installed in an end of rotating shaft, and two diagonal angle contact ball bearings are installed in the other end of rotating shaft, realizes the radial and axial supporting of countershaft.This motor stator is not traditional telescoping structure, but fabricated structure, it is characterized in that comprising track ring and stator tooth, track ring one side is by all angles of isometric circle and the formation stator tooth that stretches out, form groove between stator tooth, the width of inside groove is greater than the width of notch, stator is that material is overrided to form with the magnetic conduction silicon steel sheet, stator winding is the coil on 18 equally distributed stator tooths of stator around the home, coil on two relative on diametric(al) teeth is cascaded, and constitutes one and controls winding mutually.Stator is pressed axial magnetized, thereby produces axial rotating magnetic field in the air gap.Rotor is made up of rotor core, rotor winding and rotating shaft.Rotor is disc, is formed by silicon steel plate stacking, it is characterized in that being suppressed with on the dish type silicon steel sheet two cannelures, has 16 equally distributed radial slots between two cannelures, makes between the cannelure to be interconnected, and forms the rotor winding groove.And in winding slot, insert the rotor winding, and form the axial rotating magnetic field of the rotor winding cutting stator generation of close access, thereby produce induced current, form electromagnetic torque, drive the rotor rotation.The essence of this structure changes the bottleneck shape shortcoming of the magnetic flux path that has overcome traditional spindle motor rotor tooth root place, and makes radiation effect of motor better, reduces the thermal impact to main shaft bearing, makes the more compact structure of main shaft bearing simultaneously, and rigidity is higher.
According to the foregoing invention design, the present invention adopts following technical proposals:
A kind of electric main shaft of end-face motor comprises shell, motor stator, rotor and bearing.It is characterized in that described motor stator and rotor end-surface type structure for arranging vertically, described rotor is installed in an end of a rotating shaft, described bearing two diagonal angle contact ball bearings are installed in the other end of described rotating shaft, constitute the cantilever type radial support to described rotating shaft.
Above-mentioned motor stator is a fabricated structure, comprise track ring and stator winding, track ring one side is by all angles of isometric circle and the formation stator tooth that stretches out, form groove between stator tooth, stator winding around the home on 18 equally distributed stator tooths on the stator, the coil on two relative on diametric(al) teeth is cascaded, and constitutes one and controls winding mutually, stator is pressed axial magnetized, thereby produces axial rotating magnetic field in the air gap.
Above-mentioned rotor is to be suppressed with two cannelures on the dish type silicon steel sheet, has 16 radially equally distributed radial slots by machining hole radially between two cannelures, makes between the cannelure to be interconnected, and forms the rotor winding groove.And in the rotor winding groove, insert the rotor winding, and form the axial rotating magnetic field of the rotor winding cutting stator generation of close access, thereby produce induced current, form electromagnetic torque, drive the rotor rotation.
Above-mentioned shell connects a roots rotor shell by a stator casing and constitutes, cavity in described stator casing is settled described motor stator and rotor, motor stator is fixedlyed connected with the aft bulkhead of stator casing, the outer race fixed in position of two diagonal angle contact ball bearings of described supporting shaft is in described rotor case, the front end of rotor case is fixed a bearing (ball) cover, the bearing (ball) cover endoporus is fixed an oil seal washer, and described rotating shaft is stretched out outside the bearing (ball) cover.
Be furnished with cooling-water duct on the said stator shell and connect cooling system, internally the motor stator and the rotor of dress cool off.
The present invention has following outstanding substantial characteristics and marked improvement compared with prior art:
(1) radical change of design feature, the magnetic flux path that has overcome traditional electrical spindle rotor tooth root place is the shortcoming of bottleneck shape;
(2) radiation effect of motor is good, and is little to the thermal impact of bearing;
(3) compact conformation of bearing, bearing rigidity is better.
Description of drawings
Fig. 1 is the structural representation of an embodiment of end-face motor electricity main shaft among the present invention;
Fig. 2 is the structural representation of electric main shaft stator in Fig. 1 example;
Fig. 3 is the structural representation of electric spindle rotor in Fig. 1 example.
Embodiment
A preferred embodiment of the present invention is: referring to Fig. 1, the electric main shaft of this end-face motor comprises shell, motor stator 1, rotor 3 and bearing.Described motor stator 1 and rotor 3 are the end-surface type structure of arranging vertically, described rotor 3 is installed in an end of a rotating shaft 13, described bearing two diagonal angle contact ball bearings 7,10 are installed in the other end of described rotating shaft 1, constitute the cantilever type radial support to described rotating shaft 1.
The structural representation of above-mentioned motor stator 1 as shown in Figure 2, motor stator 1 is a fabricated structure, comprise track ring 14 and and stator winding 2, track ring 14 1 sides are by all angles of isometric circle and the formation stator tooth 15 that stretches out, 15 of stator tooths form groove 16, stator winding 2 around the home on 18 on the stator 1 equally distributed stator tooths 15, coil on two relative on diametric(al) teeth is cascaded, constitute one and control winding mutually, stator 1 is pressed axial magnetized, thereby produces axial rotating magnetic field in the air gap.
The structural representation of above-mentioned rotor 3 as shown in Figure 3, rotor 3 is to be suppressed with two cannelures 20 on dish type silicon steel sheet 18, between two cannelures, have 16 radially equally distributed radial slots by machining hole 17 radially, make between the cannelure 20 to be interconnected, form rotor winding groove 19.And in rotor winding groove 19, insert rotor winding 21, and form the axial rotating magnetic field of the rotor winding 21 cutting stators generation of close access, thereby produce induced current, form electromagnetic torque, drive rotor 3 rotations.
Referring to Fig. 1, above-mentioned shell connects a roots rotor shell 6 by a stator casing 5 and constitutes, cavity in described stator casing 5 is settled described motor stator 1 and rotor 3, motor stator 1 is fixedlyed connected with the aft bulkhead of stator casing 5, the outer race fixed in position of two diagonal angle contact ball bearings 7,10 of described supporting shaft 13 is in described rotor case 6, the front end of rotor case 6 is fixed a bearing (ball) cover 11, bearing (ball) cover 11 endoporus are fixed an oil seal washer 12, and described rotating shaft 13 is stretched out outside the bearing (ball) cover 11.Be furnished with cooling-water duct 4 on the said stator shell 5 and connect cooling systems, internally the motor stators of dress) and rotor 3 cool off.
Claims (4)
1. the electric main shaft of an end-face motor comprises shell, motor stator (1), rotor (3) and bearing; It is characterized in that described motor stator (1) and rotor (3) end-surface type structure for arranging vertically, described rotor (3) is installed in an end of a rotating shaft (13), described bearing is two diagonal angle contact ball bearings (7,10), be installed in the other end of described rotating shaft (13), constitute cantilever type radial support described rotating shaft (13); Described motor stator (1) is a fabricated structure, comprise track ring (14) and stator winding (2), track ring (14) one sides are by all angles of isometric circle and the formation stator tooth (15) that stretches out, form groove (16) between stator tooth (15), stator winding (2) around the home on 18 the equally distributed stator tooths (15) on the stator (1), coil on two relative on diametric(al) teeth is cascaded, constitute one and control winding mutually, stator (1) is pressed axial magnetized, thereby produces axial rotating magnetic field in the air gap.
2. the electric main shaft of end-face motor according to claim 1, it is characterized in that described rotor (3) is to be suppressed with two cannelures (20) on dish type silicon steel sheet (18), between two cannelures, have 16 radially equally distributed radial slots by machining hole (17) radially, make between the cannelure (20) and be interconnected, form rotor winding groove (19), and in rotor winding groove (19), insert rotor winding (21), form the axial rotating magnetic field of rotor winding (21) the cutting stator generation of close access, thereby generation induced current, form electromagnetic torque, drive rotor (3) rotation.
3. the electric main shaft of end-face motor according to claim 1, it is characterized in that described shell connects a rotor case (6) by a stator casing (5) and constitutes, cavity in described stator casing (5) is settled described motor stator (1) and rotor (3), motor stator (1) is fixedlyed connected with the aft bulkhead of stator casing (5), two diagonal angle contact ball bearings (7 of described supporting shaft (13), 10) outer race fixed in position is in described rotor case (6), the front end of rotor case (6) is fixed a bearing (ball) cover (11), bearing (ball) cover (11) endoporus is fixed an oil seal washer (12), and described rotating shaft (13) is stretched out outside the bearing (ball) cover (11).
4. the electric main shaft of end-face motor according to claim 3 is characterized in that being furnished with on the described stator casing (5) cooling-water duct (4) and connects cooling system, and internally the motor stator (1) and the rotor (3) of dress cool off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100503419A CN101557137B (en) | 2009-04-30 | 2009-04-30 | Electric main shaft of end-face motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100503419A CN101557137B (en) | 2009-04-30 | 2009-04-30 | Electric main shaft of end-face motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101557137A CN101557137A (en) | 2009-10-14 |
| CN101557137B true CN101557137B (en) | 2011-10-26 |
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ID=41175124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100503419A Expired - Fee Related CN101557137B (en) | 2009-04-30 | 2009-04-30 | Electric main shaft of end-face motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101557137B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545457A (en) * | 2010-12-15 | 2012-07-04 | 江苏华雕机械有限公司 | High-speed electric spindle supported by multiple groups of bearings |
-
2009
- 2009-04-30 CN CN2009100503419A patent/CN101557137B/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 徐同申.国内数控机床用电主轴系统的发展.《世界制造技术与装备市场》.2004,(第1期),第21页最后一段至第22页第2段和图4. * |
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| Publication number | Publication date |
|---|---|
| CN101557137A (en) | 2009-10-14 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SHANGHAI TIANAN BEARING CO., LTD. Assignor: Shanghai University Contract record no.: 2011310000245 Denomination of invention: Electric main shaft of end-face motor Granted publication date: 20111026 License type: Exclusive License Open date: 20091014 Record date: 20111206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111026 Termination date: 20170430 |
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| CF01 | Termination of patent right due to non-payment of annual fee |