CN2899257Y - Gyro motor - Google Patents
Gyro motor Download PDFInfo
- Publication number
- CN2899257Y CN2899257Y CN 200620115804 CN200620115804U CN2899257Y CN 2899257 Y CN2899257 Y CN 2899257Y CN 200620115804 CN200620115804 CN 200620115804 CN 200620115804 U CN200620115804 U CN 200620115804U CN 2899257 Y CN2899257 Y CN 2899257Y
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- interference
- stator
- faying face
- motor
- drive shaft
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Abstract
The utility model belongs to aircraft instrument manufacturing technology and relates to a gyro motor, consisting of a wheel flange 1, a magnetic yoke 2, a stator winding 3, a motor end cover 4, a stator core 5, a stator bush 6, a bearing bush 7, a bearing 8 and a motor shaft 9. The utility model is characterized in that: the axial length of the interference joint surface of the stator bush 6 and the middle part of the motor shaft 9 is 2-6mm; the axial length of the interference joint surface of the magnetic yoke 2 and the wheel flange 1 is 3-4mm. The utility model can avoid the plastic deformation or slip among the structural components of the gyro motor causing the centroid change of the gyro motor because of thermal stress, so as to ensure the gyro motor produces no error after high-low temperature cycle and the change of temperature stop and rise.
Description
Technical field
The utility model belongs to the instrument manufacturing technology, relates to the improvement to gyro motor.
Background technology
The mass centre of gyro motor can keep high-precision and stablize constantly under high low temperature, be the key of gyro technology, when the change of 1 μ m takes place its barycenter, will make gyro produce unallowed error.The reason that barycenter changes is that thermal (temperature difference) stress causes flow or the slippage between the structural member.At present, the interference of gyro motor is fastenedly connected, and all is hole and the axle large tracts of land interference fit of taking the whole perforation length of part mating surface, as shown in Figure 1.The cooperation of this perforation length can accumulate out excessive shear stress, causes slippage or flow take place between the part.And the basic point of slippage is at random, causes barycenter to depart from the origin-location.After product is through high low temperature circulation and self start-stop temperature rise variation, will produce bigger error.
Summary of the invention
The purpose of this utility model is: propose a kind of can avoiding and cause flow between the gyro motor structural member or slippage and then the gyro motor that causes its barycenter to change because of thermal (temperature difference) stress, thereby after guaranteeing that gyro motor is through high low temperature circulation and self start-stop temperature rise variation, can not produce error.
The technical solution of the utility model is: a kind of gyro motor, by wheel rim 1, yoke 2, stator winding 3, motor end cap 4, stator core 5, stator liner 6, bearing insert 7, bearing 8 and motor drive shaft 9 are formed, motor drive shaft 9 is by a left side, in, right three sections compositions, left side section is identical with the diameter of right section, the stage casing diameter is greater than the diameter of left side section and right section, stator liner 6 adopts interference fit to be connected with the stage casing of motor drive shaft 9, stator core 5 is fixed on the stator liner 6, stator winding 3 is wound in the stator core 5, the outer circumference surface of yoke 2 adopts interference fit to be connected with the inner peripheral surface of wheel rim 1, stator core 5 and stator winding 3 are arranged in the inner chamber of yoke 2, two bearing inserts 7 are installed on the motor drive shaft 9, be positioned at the two ends in motor drive shaft 9 stage casings, two bearings 8 are installed in respectively in two bearing inserts 7, the overcoat of bearing 8 combines with the inner chamber of bearing insert 7, two motor end caps 4 are installed in respectively in the seam at two ends, wheel rim 1 left and right sides, form whole with wheel rim 1, there is bearing pedestal at center at each motor end cap 4, combine with the interior cover of two bearings 8 respectively, it is characterized in that
(1) the interference faying face in the stage casing of said stator liner 6 and motor drive shaft 9 is positioned at the centre of stator liner 6 and motor drive shaft 9 mating surfaces, the axial length of this interference faying face is 2～6mm, the magnitude of interference of this interference faying face is 10～30 μ m, axial length at the mating surface at these interference faying face two ends is identical, and its fit clearance is greater than 5 μ m;
(2) the interference faying face of said yoke 2 and wheel rim 1 is positioned at the centre of yoke 2 and wheel rim 1 mating surface, the axial length of this interference faying face is 2～6mm, the magnitude of interference of this interference faying face is 10～50 μ m, axial length at the mating surface at these interference faying face two ends is identical, and its fit clearance is greater than 5 μ m.
The utility model has the advantages that: the arrowband interference fit of 3～4mm is only arranged in the middle of interference faying face in two places of the present utility model adopts, and its magnitude of interference is 10～3 μ m and 10～50 μ m.The mating surface of both sides is the matched in clearance of retractable beyond the interference fit, and its gap is not less than 5 μ m, structure on two sides shape symmetry, quality equity, silica filled organopolysiloxane resin and so on medium in the gap.The utility model can be avoided because of thermal (temperature difference) stress causes flow between the gyro motor structural member or slippage and then the gyro motor that causes its barycenter to change, thereby after guaranteeing that gyro motor changes through high low temperature circulation and self start-stop temperature rise, can not produce error.In the embodiment shown in Figure 2, mouse cage that temperature is higher and yoke and be subjected to air cooling and the lower rotor wheel rim of temperature has only intermediate width is the arrowband interference tight fit of 3～4mm, because the shear stress on the temperature difference formed mating surface of coefficient of thermal expansion different with material, only be in the elasticity covariant scope, can not reach the degree of flow or slippage, and the both sides distortion is to be fixed datum with the centre, the reversible variation of both sides equity.And the interference fit of 3～4mm just can provide enough bonding strengths, is enough to competent combination processing and operating overload stress.Facts have proved, adopt the made gyro motor of the utility model, be used for aeronautical product, its high low temperature drift error changes very little, and product before this, behind the thermocycling, it is big that the product drift error obviously becomes.
Description of drawings
Fig. 1 is the structural representation of existing gyro motor.
Fig. 2 is a structural representation of the present utility model.
Embodiment
Below the utility model is described in further details.Referring to Fig. 2, the utility model is made up of wheel rim 1, yoke 2, stator winding 3, motor end cap 4, stator core 5, stator liner 6, bearing insert 7, bearing 8 and motor drive shaft 9.Motor drive shaft 9 is made up of for three sections left, center, right, and left side section is identical with the diameter of right section, and the stage casing diameter is greater than the diameter of left side section and right section.Stator liner 6 adopts interference fit to be connected with the stage casing of motor drive shaft 9, and stator core 5 is fixed on the stator liner 6, and stator winding 3 is wound in the stator core 5.The outer circumference surface of yoke 2 adopts interference fit to be connected with the inner peripheral surface of wheel rim 1.Stator core 5 and stator winding 3 are arranged in the inner chamber of yoke 2.Two bearing inserts 7 are installed on the motor drive shaft 9, are positioned at the two ends in motor drive shaft 9 stage casings, and two bearings 8 are installed in respectively in two bearing inserts 7, and the overcoat of bearing 8 combines with the inner chamber of bearing insert 7.Two motor end caps 4 are installed in respectively in the seam at two ends, wheel rim 1 left and right sides, form integral body with wheel rim 1, at the center of each motor end cap 4 bearing pedestal are arranged, and combine with the interior cover of two bearings 8 respectively.It is characterized in that,
(1) the interference faying face in the stage casing of said stator liner 6 and motor drive shaft 9 is positioned at the centre of stator liner 6 and motor drive shaft 9 mating surfaces, the axial length of this interference faying face is 2～6mm, the magnitude of interference of this interference faying face is 10～30 μ m, axial length at the mating surface at these interference faying face two ends is identical, and its fit clearance is greater than 5 μ m.Can the silica filled organopolysiloxane resin in above-mentioned gap and so on medium.
(2) the interference faying face of said yoke 2 and wheel rim 1 is positioned at the centre of yoke 2 and wheel rim 1 mating surface, the axial length of this interference faying face is 2～6mm, the magnitude of interference of this interference faying face is 10～50 μ m, axial length at the mating surface at these interference faying face two ends is identical, and its fit clearance is greater than 5 μ m.Can the silica filled organopolysiloxane resin in above-mentioned gap and so on medium.
Embodiment
In an embodiment of the present utility model, stator liner 6 is 3.5 μ m with the axial length of the interference faying face in the stage casing of motor drive shaft 9, and the magnitude of interference of this interference faying face is 15 μ m, is 6 μ m in the fit clearance of the mating surface at these interference faying face two ends.Yoke 2 is 3.5mm with the axial length of the interference faying face of wheel rim 1, and the magnitude of interference of this interference faying face is 20 μ m, is 8 μ m in the fit clearance of the mating surface at these interference faying face two ends.
Claims (1)
1, a kind of gyro motor, by wheel rim [1], yoke [2], stator winding [3], motor end cap [4], stator core [5], stator liner [6], bearing insert [7], bearing [8] and motor drive shaft [9] are formed, motor drive shaft [9] is by a left side, in, right three sections compositions, left side section is identical with the diameter of right section, the stage casing diameter is greater than the diameter of left side section and right section, stator liner [6] adopts interference fit to be connected with the stage casing of motor drive shaft [9], stator core [5] is fixed on the stator liner [6], stator winding [3] is wound in the stator core [5], the outer circumference surface of yoke [2] adopts interference fit to be connected with the inner peripheral surface of wheel rim [1], stator core [5] and stator winding [3] are arranged in the inner chamber of yoke [2], two bearing inserts [7] are installed on the motor drive shaft [9], be positioned at the two ends in motor drive shaft [9] stage casing, two bearings [8] are installed in respectively in two bearing inserts [7], the overcoat of bearing [8] combines with the inner chamber of bearing insert [7], two motor end caps [4] are installed in respectively in the seam at wheel rim [1] two ends, the left and right sides, form whole with wheel rim [1], there is bearing pedestal at center at each motor end cap [4], interior cover with two bearings [8] combines respectively, it is characterized in that
(1) the interference faying face in the stage casing of said stator liner [6] and motor drive shaft [9] is positioned at the centre of stator liner [6] and motor drive shaft [9] mating surface, the axial length of this interference faying face is 2～6mm, the magnitude of interference of this interference faying face is 10～30 μ m, axial length at the mating surface at these interference faying face two ends is identical, and its fit clearance is greater than 5 μ m;
(2) the interference faying face of said yoke [2] and wheel rim [1] is positioned at the centre of yoke [2] and wheel rim [1] mating surface, the axial length of this interference faying face is 2～6mm, the magnitude of interference of this interference faying face is 10～50 μ m, axial length at the mating surface at these interference faying face two ends is identical, and its fit clearance is greater than 5 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620115804 CN2899257Y (en) | 2006-05-17 | 2006-05-17 | Gyro motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620115804 CN2899257Y (en) | 2006-05-17 | 2006-05-17 | Gyro motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2899257Y true CN2899257Y (en) | 2007-05-09 |
Family
ID=38074588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620115804 Expired - Fee Related CN2899257Y (en) | 2006-05-17 | 2006-05-17 | Gyro motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2899257Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967242A (en) * | 2015-06-12 | 2015-10-07 | 陕西宝成航空仪表有限责任公司 | Full-gluing dynamic balancing gyro motor |
-
2006
- 2006-05-17 CN CN 200620115804 patent/CN2899257Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967242A (en) * | 2015-06-12 | 2015-10-07 | 陕西宝成航空仪表有限责任公司 | Full-gluing dynamic balancing gyro motor |
| CN104967242B (en) * | 2015-06-12 | 2017-06-23 | 陕西宝成航空仪表有限责任公司 | It is complete to be glued dynamic balancing gyro machine |
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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: 20070509 Termination date: 20140517 |