CN216056604U - High-rigidity precision driving shaft system - Google Patents
High-rigidity precision driving shaft system Download PDFInfo
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- CN216056604U CN216056604U CN202122094533.9U CN202122094533U CN216056604U CN 216056604 U CN216056604 U CN 216056604U CN 202122094533 U CN202122094533 U CN 202122094533U CN 216056604 U CN216056604 U CN 216056604U
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- bearing
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- motor
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- outer lane
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Abstract
The utility model provides a high rigidity precision drive shafting, includes the motor cabinet, the motor cabinet internal fixation has motor stator, installs motor rotor in the motor stator, motor rotor internal fixation has the bearing frame, installs angular contact bearing pair in the bearing frame, angular contact bearing pair's one end is equipped with the bearing inner race gland with motor cabinet fixed connection, and angular contact bearing pair's the other end is equipped with the bearing outer lane gland with bearing frame fixed connection, one side of bearing outer lane gland is equipped with the spacing seat of fixing on the motor cabinet, bearing outer lane gland is located and is equipped with the spiral wire casing on one side terminal surface of spacing seat, spacing seat is located and is equipped with the spacing groove with spiral wire casing matched with on one side terminal surface of bearing outer lane gland, be equipped with the steel ball between spacing seat and the bearing outer lane gland, the steel ball is at spiral wire casing and spacing inslot motion. The method can be applied to driving the frame of the missile-borne inertial set calibration equipment to rotate, and meets the requirements of the missile-borne inertial set calibration equipment on an impact vibration environment and high precision.
Description
Technical Field
The utility model relates to a driving shaft system, in particular to a high-rigidity precision driving shaft system applied to missile-borne inertial measurement unit calibration equipment.
Background
The driving shaft system is used as an important part in the development process of the calibration equipment of the missile-borne inertial set and used for driving the inner frame and the load frame to rotate and limiting the movement range of the inner frame and the load frame, the precision of the driving shaft system directly influences various movement precision indexes of the whole equipment, and the driving shaft system plays a key role in the development process of the calibration equipment of the missile-borne inertial set.
The missile-borne inertial unit calibration equipment has the advantages that large impact vibration exists in a missile-borne use environment, high requirements are provided for the rigidity of a driving shaft system, a motor base of the driving shaft system and a driving shaft in the existing missile-borne inertial unit calibration equipment are in a split structure and are connected through screws, the connection rigidity is low in the missile-borne impact vibration environment, and the requirements for the precision and the reliability of the missile-borne inertial unit calibration equipment cannot be met.
SUMMERY OF THE UTILITY MODEL
The present invention aims to provide a high-rigidity precision driving shaft system to solve the above problems in the background art.
The technical scheme adopted for achieving the aim is that the high-rigidity precision driving shaft system comprises a motor base, a motor stator is fixed in the motor base, a motor rotor is arranged in the motor stator, a bearing seat is fixed in the motor rotor, an angular contact bearing pair is arranged in the bearing seat, one end of the angular contact bearing pair is provided with a bearing inner ring gland fixedly connected with the motor base, the other end of the angular contact bearing pair is provided with a bearing outer ring gland fixedly connected with the bearing seat, one side of the bearing outer ring gland is provided with a limiting seat fixed on the motor seat, the end surface of one side of the bearing outer ring gland, which is positioned on the limiting seat, is provided with a spiral wire groove, the limiting seat is provided with a limiting groove matched with the spiral groove on the end surface of one side of the bearing outer ring gland, and a steel ball is arranged between the limiting seat and the bearing outer ring gland, and moves in the spiral line groove and the limiting groove.
Further, the motor base is machined from a high-strength aluminum alloy or titanium alloy material, and is of a hollow structure.
Further, the angular contact bearing pair is a pair of precision angular contact bearings mounted in a back-to-back manner.
Furthermore, the spiral line groove on the end face of one side of the bearing outer ring gland is of a radial structure with an angle.
Advantageous effects
Compared with the prior art, the utility model has the following advantages.
1. The motor base and the shaft can be combined into a part, so that the integral rigidity of the shaft system is greatly improved, and the shock resistance and the vibration resistance are good;
2. the utility model adopts a pair of precision angular contact bearings which are arranged back to back for supporting, the shafting rotation precision of the device is high, and the shafting precision stability is good under the impact vibration environment;
3. the utility model can carry out modularized production, is beneficial to shortening the development period of equipment and reducing the development cost.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural diagram of the bearing outer ring gland of the present invention.
Detailed Description
The utility model is further described with reference to the following examples and the accompanying drawings.
As shown in fig. 1 and 2, a high-rigidity precision drive shaft system comprises a motor base 1, a motor stator 2 is fixed in the motor base 1, a motor rotor 3 is installed in the motor stator 2, a bearing seat 4 is fixed in the motor rotor 3, an angular contact bearing pair 5 is installed in the bearing seat 4, one end of the angular contact bearing pair 5 is provided with a bearing inner ring gland 6 fixedly connected with the motor base 1, the other end of the angular contact bearing pair 5 is provided with a bearing outer ring gland 7 fixedly connected with the bearing seat 4, one side of the bearing outer ring gland 7 is provided with a limit seat 9 fixed on the motor base 1, one side end surface of the bearing outer ring gland 7 located on the limit seat 9 is provided with a spiral groove 71, one side end surface of the limit seat 9 located on the bearing outer ring gland 7 is provided with a limit groove 91 matched with the spiral groove 71, a steel ball 8 is arranged between the limit seat 9 and the bearing outer ring gland 7, the steel ball 8 moves in the spiral line groove 71 and the limit groove 91.
The motor base 1 is formed by machining a high-strength aluminum alloy or titanium alloy material, and the motor base 1 is of a hollow structure.
The angular contact bearing pair 5 is a pair of precision angular contact bearings mounted in a back-to-back manner.
The spiral groove 71 on the end face of one side of the bearing outer ring gland 7 is a radial structure with an angle.
In the utility model, the motor stator 2, the bearing inner ring gland 6 and the limiting seat 9 are respectively fixed on the motor base 1 through screws and form a static part together with the motor base 1; the motor rotor 3 and the bearing outer ring gland 7 are respectively fixed on the bearing seat 4 through screws and form a rotating part together with the bearing seat 4; the steel ball 8 moves in the spiral groove 71 on the end face of the bearing outer ring gland 7 along the circumferential direction and moves in the limiting groove 91 on the limiting seat 9 along the radial direction.
The motor base 1 is machined from high-strength aluminum alloy or titanium alloy, and the motor base 1 is of a hollow structure and can be used as a lead channel or a conductive sliding ring installation space; processing a spiral line groove 71 with an angle radiation shape on the end surface of the bearing outer ring gland 7, and setting the angle range of a spiral line according to the angle limit requirement; the bearing outer ring gland 7, the steel ball 8 and the limiting seat 9 jointly form a limiting structure of the shaft system.
The angular contact bearing pair 5 is a pair of precise angular contact bearings and is installed in a back-to-back mode, the inner rings of the angular contact bearing pair 5 are in interference fit with the motor base 1, the outer rings of the angular contact bearing pair 5 are in clearance fit with the bearing seat 4, the bearing inner ring gland 6 compresses one end of the inner rings of the angular contact bearing pair 5, and the compression pre-tightening amount is about 0.02 mm; the motor stator 2 and the motor rotor 3 jointly form a direct-current torque motor.
Claims (4)
1. The utility model provides a high rigidity precision drive shafting, includes motor cabinet (1), its characterized in that, motor cabinet (1) internal fixation has motor stator (2), installs motor rotor (3) in motor stator (2), motor rotor (3) internal fixation has bearing frame (4), installs angular contact bearing pair (5) in bearing frame (4), angular contact bearing pair (5) one end be equipped with motor cabinet (1) fixed connection's bearing inner circle gland (6), the other end of angular contact bearing pair (5) be equipped with bearing frame (4) fixed connection's bearing outer lane gland (7), one side of bearing outer lane gland (7) is equipped with spacing seat (9) of fixing on motor cabinet (1), bearing outer lane gland (7) are located and are equipped with spiral wire casing (71) on one side terminal surface of spacing seat (9), spacing seat (9) are located and are equipped with on one side terminal surface of bearing gland outer lane (7) and match with spiral wire casing (71) And a steel ball (8) is arranged between the limiting seat (9) and the bearing outer ring gland (7), and the steel ball (8) moves in the spiral line groove (71) and the limiting groove (91).
2. A high rigidity precision driving shaft system according to claim 1, wherein the motor base (1) is machined from high strength aluminum alloy or titanium alloy material, and the motor base (1) is of a hollow structure.
3. A high stiffness precision drive shaft system according to claim 1, characterised in that the angular contact bearing pair (5) is a pair of precision angular contact bearings mounted in back-to-back manner.
4. A high-rigidity precision driving shaft system as claimed in claim 1, wherein the spiral groove (71) on one side end face of the bearing outer ring gland (7) is a radial structure with an angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122094533.9U CN216056604U (en) | 2021-09-01 | 2021-09-01 | High-rigidity precision driving shaft system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122094533.9U CN216056604U (en) | 2021-09-01 | 2021-09-01 | High-rigidity precision driving shaft system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216056604U true CN216056604U (en) | 2022-03-15 |
Family
ID=80534997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122094533.9U Active CN216056604U (en) | 2021-09-01 | 2021-09-01 | High-rigidity precision driving shaft system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216056604U (en) |
-
2021
- 2021-09-01 CN CN202122094533.9U patent/CN216056604U/en active Active
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