CN112217335B - Compact type accurate driving shaft system with limiting function - Google Patents
Compact type accurate driving shaft system with limiting function Download PDFInfo
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- CN112217335B CN112217335B CN201910617305.XA CN201910617305A CN112217335B CN 112217335 B CN112217335 B CN 112217335B CN 201910617305 A CN201910617305 A CN 201910617305A CN 112217335 B CN112217335 B CN 112217335B
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- motor
- angular contact
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- driving shaft
- contact bearing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
A compact precision drive shafting with a limit function comprises a motor base, a motor stator, a motor rotor, a bearing seat, an angular contact bearing pair, a rotating shaft and a steel ball, wherein the motor stator and the rotating shaft are respectively fixed on the motor base through screws, and the inner ring of the angular contact bearing pair is fixed on the rotating shaft to jointly form a static part of the precision drive shafting; the outer ring of the angular contact bearing pair, the bearing seat and the motor rotor jointly form a rotating part of the precision driving shaft system; the steel ball moves along the radial direction on the groove of the bearing seat and moves along the spiral line on the motor seat to play a role in limiting the angle. The precision driving shaft system has the characteristics of high precision, large driving force, compact structure, light weight, high strength and rigidity, impact vibration resistance and the like, can meet the relevant requirements of missile-borne equipment, can be produced in a modularized manner, is favorable for shortening the development period of the equipment and reduces the development cost.
Description
Technical Field
The invention relates to a precision driving shaft system, in particular to a compact type precision driving shaft system with a limit function, which is applied to a missile-borne three-self-inertia-set double-shaft indexing mechanism.
Background
The driving shaft system is used as an important part in the development process of the three-self-inertia-set double-shaft indexing mechanism, is used for driving the inner frame and the load frame to rotate and limits 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 plays a key role in the development process of the three-self-inertia-set double-shaft indexing mechanism.
The missile-borne use environment puts forward severe requirements on the size and the weight of a three-self-inertia-unit double-shaft indexing mechanism, and a driving shaft system in the existing product adopts a crossed roller bearing, so that the size is large, the weight is heavy, and the structure is complex, so that the material and the structural form of the existing driving shaft system must be improved to meet the requirements.
Disclosure of Invention
The technical scheme adopted for realizing the purpose comprises a motor base, a motor stator, a motor rotor, a bearing seat, an angular contact bearing pair, a rotating shaft and a steel ball; the angular contact bearing pair inner rings are fixed on the rotating shaft to jointly form a static part of the precision driving shaft system; the outer ring of the angular contact bearing pair, the bearing seat and the motor rotor jointly form a rotating part of the precision driving shaft system; the steel ball moves along the radial direction on the groove of the bearing seat, and moves along the circumferential direction of the spiral line groove on the motor seat to play a role in limiting the angle.
Advantageous effects
Compared with the prior art, the invention has the following advantages.
1. The device has the characteristics of large driving force, compact structure, light weight, high strength and rigidity, impact vibration resistance and the like, and can meet the relevant requirements of missile-borne equipment;
2. the shafting support is in a back-to-back installation mode of a pair of precision angular contact bearings, so that the shafting rotation precision of equipment can be obviously improved, and the requirement on the precision stability of the shafting is met in a missile-borne impact vibration environment;
3. the modular production can be carried out, thereby being beneficial to shortening the development period of the equipment and reducing the development cost.
Drawings
FIG. 1 is a schematic view of the present invention.
Fig. 2 is a schematic three-dimensional structure diagram of a motor base according to an embodiment of the present invention.
Fig. 3 is a schematic three-dimensional structure diagram of a bearing seat according to an embodiment of the invention.
Reference numbers in the figures: 1. the motor comprises a motor base, a motor stator 2, a motor rotor 3, a bearing seat 4, an angular contact bearing pair 5, a rotating shaft 6, a steel ball 7, a spiral line groove 8 and a groove 9.
Detailed Description
The invention is described in more detail below with reference to the accompanying drawings:
the motor stator 2 and the rotating shaft 6 are respectively fixed on the motor base 1 through screws, and the inner rings of the angular contact bearing pair 5 are fixed on the rotating shaft 6 to jointly form a static part of the precision driving shaft system; the outer ring of the angular contact bearing pair 5, the bearing seat 4 and the motor rotor 3 jointly form a rotating part of a precision driving shaft system, and a load is fixed on the bearing seat 4 through a screw and rotates along with the rotating part; the steel ball 7 moves along the radial direction on the groove 9 of the bearing seat 4 and moves along the spiral line groove 8 on the motor seat 1 to play a role in limiting the angle. After the motor is electrified, the rotating part drives the load to rotate according to the control instruction, and when the limited angle range of the spiral line in the motor base 1 is exceeded, the steel ball 7 is contacted with the tail end of the spiral line groove 8, and the shafting stops rotating.
Examples
As shown in fig. 1, fig. 2, and fig. 3, the specific implementation process is as follows:
a compact precision drive shafting with a limit function is applied to a missile-borne three-self-inertia-unit double-shaft indexing mechanism, as shown in figure 1, a motor stator 2 and a rotating shaft 6 are respectively fixed on a motor base 1 through screws, and inner rings of an angular contact bearing pair 5 are fixed on the rotating shaft 6 to jointly form a static part of the precision drive shafting; the outer ring of the angular contact bearing pair 5, the bearing seat 4 and the motor rotor 3 jointly form a rotating part of the precision driving shaft system, and a load is fixed on the bearing seat 4 through screws and rotates along with the rotating part; the steel ball 7 moves along the radial direction on the groove 9 of the bearing seat 4 and moves along the spiral line groove 8 on the motor seat 1 to play a role in limiting the angle.
The motor base 1 is precisely machined by high-strength aluminum alloy, has high strength and rigidity and is light in weight; the radial spiral line groove 8 with a specific angle is processed on the inner end face of the motor base 1, and the limitation requirement of a specific angle range is met.
The steel ball 7 moves along the radial direction on the groove 9 of the bearing seat 4 and moves along the spiral line groove 8 on the motor seat 1 to play a role in limiting the angle.
After the motor is electrified, the rotating part drives the load to rotate according to the control instruction, and when the limited angle range of the spiral line in the motor base 1 is exceeded, the steel ball 7 is contacted with the tail end of the spiral line groove 8, and the shafting stops rotating.
The motor composed of the motor stator 2 and the motor rotor 3 is a direct-current torque motor, has the characteristics of small volume, large driving force and convenience in installation and adjustment, and is particularly suitable for being applied to the requirement of high torque output density of the missile-borne equipment in the embodiment.
The angular contact bearing pair 5 is a pair of precise angular contact bearings and is installed in a back-to-back mode, so that the shafting precision can be guaranteed in a missile-borne impact vibration environment, and the requirement on long-time precision stability is met.
The rotating shaft 6 is of a hollow structure, so that the weight of the whole precision driving shaft system can be reduced on one hand, and a channel can be provided for a lead to pass through on the other hand.
Claims (4)
1. The utility model provides a spacing precision drive shafting in compact area, includes motor cabinet (1), motor stator (2), electric motor rotor (3), bearing frame (4), angular contact bearing pair (5), pivot (6), steel ball (7), its characterized in that: the motor stator (2) and the rotating shaft (6) are respectively fixed on the motor base (1) through screws, and the inner rings of the angular contact bearing pair (5) are fixed on the rotating shaft (6) to jointly form a static part of the precision driving shaft system; the outer ring of the angular contact bearing pair (5), the bearing seat (4) and the motor rotor (3) jointly form a rotating part of the precision driving shaft system; the angular contact bearing pair (5) is a pair of precise angular contact bearings which are arranged in a back-to-back manner; the steel ball (7) moves along the radial direction on the groove (9) of the bearing seat (4) and moves along the circumferential direction of the spiral line groove (8) on the motor seat (1) to play a role in limiting the angle.
2. The compact precision drive shafting with the limit function as claimed in claim 1, wherein said motor base (1) is machined from high-strength aluminum alloy, and has high strength, rigidity and light weight; a radial spiral groove (8) with a specific angle is processed on the inner end face of the motor base (1), and the limitation requirement of a specific angle range is met.
3. The compact precision drive shafting with the limit stop as claimed in claim 1, wherein said motor stator (2) and said motor rotor (3) together form a dc torque motor.
4. The compact precision drive shafting with the limit function as claimed in claim 1, wherein said shaft (6) is hollow, so as to reduce the weight of the whole precision drive shafting and provide a passage for the wire to pass through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910617305.XA CN112217335B (en) | 2019-07-10 | 2019-07-10 | Compact type accurate driving shaft system with limiting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910617305.XA CN112217335B (en) | 2019-07-10 | 2019-07-10 | Compact type accurate driving shaft system with limiting function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112217335A CN112217335A (en) | 2021-01-12 |
| CN112217335B true CN112217335B (en) | 2022-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910617305.XA Active CN112217335B (en) | 2019-07-10 | 2019-07-10 | Compact type accurate driving shaft system with limiting function |
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Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4994937B2 (en) * | 2007-05-07 | 2012-08-08 | 日立粉末冶金株式会社 | Sintered oil-impregnated bearing for fan motor |
| CN102589547B (en) * | 2012-03-22 | 2014-06-25 | 哈尔滨工程大学 | Electric control rotating platform and position measuring method for inertial navigation instrument |
| CN104802912A (en) * | 2015-05-05 | 2015-07-29 | 苏州捷诚科技有限公司 | Two-shaft three-stage deceleration middle torque transmission system |
| CN205184279U (en) * | 2015-11-04 | 2016-04-27 | 中国科学院长春光学精密机械与物理研究所 | Multi -functional high -precision rotary table of formula that can make up |
| CN105258888B (en) * | 2015-11-13 | 2018-01-19 | 西安交通大学 | Research experiment device and measuring method of the bearing magnitude of interference to axis system performance impact |
| CN205956208U (en) * | 2016-08-29 | 2017-02-15 | 江苏天驰轴承有限公司 | Accurate angular contact ball bearing |
| CN206211761U (en) * | 2016-11-08 | 2017-05-31 | 北京星网智控科技有限公司 | A kind of safety caging device of the turntable more than 360 degree that can allow |
| DE102018201827A1 (en) * | 2017-02-28 | 2018-08-30 | Aktiebolaget Skf | roller bearing |
| CN206754188U (en) * | 2017-04-26 | 2017-12-15 | 中国科学院西安光学精密机械研究所 | A kind of precision bearing axially stop block and precision bearing system |
| CN106949814B (en) * | 2017-04-26 | 2023-04-11 | 中国科学院西安光学精密机械研究所 | Rapid assembling and adjusting device for precisely assembled bearing and using method |
| CN207487688U (en) * | 2017-06-08 | 2018-06-12 | 珠海市祥博机电科技有限公司 | A kind of certainly used group twin shaft indexing mechanism of aircraft three |
| CN208961310U (en) * | 2018-08-06 | 2019-06-11 | 无锡奥特维科技股份有限公司 | A kind of Telescopic rotating device and welding equipment |
| CN109586538A (en) * | 2018-12-06 | 2019-04-05 | 上海航天控制技术研究所 | A kind of autonomous controllable high-precision height response electromechanical servo component |
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| CN112217335A (en) | 2021-01-12 |
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