CN207487688U - A kind of certainly used group twin shaft indexing mechanism of aircraft three - Google Patents
A kind of certainly used group twin shaft indexing mechanism of aircraft three Download PDFInfo
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- CN207487688U CN207487688U CN201720662028.0U CN201720662028U CN207487688U CN 207487688 U CN207487688 U CN 207487688U CN 201720662028 U CN201720662028 U CN 201720662028U CN 207487688 U CN207487688 U CN 207487688U
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Abstract
A kind of aircraft three, including shell, is equipped with outline border shafting, inside casing shafting is provided in the outline border shafting from used group twin shaft indexing mechanism in the shell.By the way of the utility model is supported using one end, it is connected using right angle L structures, the axial length dimension of shafting is made to reduce nearly half, while in order to solve the problems, such as bearing stiffness, we use high-precision crossed roller bearing, structure is more compact, can bear radial load, bidirectional propulsion load and tilting moment simultaneously, while have high bearing capacity, high-precision and high rigidity.It therefore, can be with used group of installation dimension bigger in indexing mechanism in the case that this structure type so that indexing mechanism appearance and size is constant.And selecting absolute type Circular gratings, since sectional dimension is small, cooperation crossed roller bearing uses, and will not occupy extra space, the positioning accuracy of indexing mechanism improves at least 5 times as angle measurement element.Used group is allowd to realize self-test, self-calibration and self-alignment three from function.
Description
【Technical field】
The utility model is related to inertial navigation field, the certainly used group twin shaft indexing mechanism of more particularly to a kind of aircraft three.
【Background technology】
In existing product, used group twin shaft indexing mechanism can make used group have self-test, the function of self-calibration.But due to
The requirement of user is higher and higher, and the function of self-test and self-calibration cannot meet the requirement of user.It is and existing
By the way of the shafting of used group twin shaft indexing mechanism supports used group using both ends, size is big, occupies larger space, and structure
It is relative complex.Shafting is supported using angular contact ball bearing, due to the limitation of bulk so that inner hole of spindle is too small, is used to group electricity
Cable passes through difficulty, and the radial direction bearing capacity of bearing is poor.Existing twin shaft indexing mechanism angle measurement component is become using rotation
The problems such as depressor, precision is low, position poor repeatability.
【Utility model content】
The utility model provides a kind of aircraft three from used group twin shaft indexing mechanism in view of the deficiencies of the prior art.
In view of the above-mentioned problems, the utility model takes following technical scheme：
A kind of certainly used group twin shaft indexing mechanism of aircraft three, it is characterised in that：Including shell, the one side in the shell
Equipped with outline border shafting, inside casing shafting is provided in the outline border shafting.
Preferably, the outline border shafting includes setting the first motor of one side inside the shell, first motor and branch
Frame is installed inside the shell by clutch shaft bearing, and the clutch shaft bearing side is equipped with the first light for detection support swing offset
Grid, first motor driven support make the rotation of clutch shaft bearing axle center.
Preferably, the inside casing shafting includes the second motor being arranged on stent, and second motor passes through with table top
Second bearing is rack-mount, and the second bearing side is equipped with for the second grating for examining table top swing offset, described
Used group is equipped on face, the second motor driving table top makees the rotation of second bearing axle center.
Preferably, the stent is the stent of right angle L-type structure.
Preferably, the clutch shaft bearing and second bearing are using accurate crossed roller bearing.
Preferably, first grating and the second grating use absolute type Circular gratings.
The utility model has the following advantages：
By the way of the utility model is supported using one end, it is changed between inside casing shafting and outline border shafting by the connection of O shapes frame
Right angle L structures connection, makes the axial length dimension of shafting reduce nearly half, while in order to solve the problems, such as bearing stiffness,
We use high-precision crossed roller bearing, and compared with angular contact ball bearing, structure is more compact, can bear radially to carry simultaneously
Lotus, bidirectional propulsion load and tilting moment, while there is high bearing capacity, high-precision and high rigidity.Therefore this structure shape
It, can be with used group of installation dimension bigger in indexing mechanism in the case that formula so that indexing mechanism appearance and size is constant.And it selects
Absolute type Circular gratings are as angle measurement element, and since sectional dimension is small, cooperation crossed roller bearing uses, and will not occupy extra sky
Between, the positioning accuracy of indexing mechanism improves at least 5 times.Used group is allowd to realize self-test, self-calibration and self-alignment three
From function.
【Description of the drawings】
FIG. 1 is a schematic structural view of the utility model；
Shell 5；First motor 1；Stent 10；Clutch shaft bearing 3；First grating 2；Second motor 9；Table top 6；Second bearing 8；
Second grating 7；Used group 4.
【Specific embodiment】
In order to make the technical solution of the utility model clearer, come below by way of specific embodiment to the utility model
It is described in detail.
A kind of aircraft three is from used group twin shaft indexing mechanism, and including shell 5, the one side in the shell 5 is equipped with outline border
Shafting is provided with inside casing shafting in the outline border shafting.
Specifically, the outline border shafting includes the first motor 1 of setting one side inside the shell, first motor 1 with
Stent 10 is mounted on by clutch shaft bearing 3 in shell 5.Preferably, stent 10 is the stent of right angle L-type structure to the utility model
10, the axial length dimension of shafting is made to reduce nearly half.3 side of clutch shaft bearing is equipped with rotates position for detection support 10
The first grating 2 moved, 1 driving arm 10 of the first motor make the rotation of 3 axle center of clutch shaft bearing.
More specifically, inside casing shafting includes being arranged on second motor 9 in carriage center portion, second motor 9 and table top 6
It is installed over the mount 10 by second bearing 8,8 side of second bearing is equipped with the second light for examining 6 swing offset of table top
Grid 7, used group 4 is equipped on the table top 6, and second motor 9 drives table top 6 to make the rotation of 8 axle center of second bearing.
More specifically, in order to solve the problems, such as bearing stiffness, the preferred clutch shaft bearing 3 of the utility model and second bearing
8 using accurate crossed roller bearing, and structure is more compact, can bear radial load, bidirectional propulsion load simultaneously and topple
Torque, while there is high bearing capacity, high-precision and high rigidity.Therefore this structure type causes indexing mechanism appearance and size not
It, can be with used group of installation dimension bigger in indexing mechanism in the case of change.
Specifically, the first grating 2 and the second grating 7 use absolute type Circular gratings as angle measurement element, system accuracy
2 rads can be reached, 5 times more accurate than rotary transformer or more.And Circular gratings coordinate crossed roller axis since sectional dimension is small
Use is held, extra space will not be occupied, because precision improves so that used group can realize self-test, self-calibration and self calibration
Three from function.
Interior outline border shafting can work according to the instruction that self-calibration program segment or host computer provide, and pass through outline border shafting
First motor 1 drives stent 10 to rotate, and the second motor 9 of inside casing shafting drives table top 6 to rotate, accurate so as to be provided for used group 6
Complete the staking-out work to used group parameter in different position references.
The foregoing is merely the preferred embodiments of the utility model, the utility model is not limited to above-mentioned embodiment party
Formula, as long as realizing that the technical solution of the utility model is belonged within scope of protection of the utility model with essentially identical means.
Claims (1)
1. a kind of certainly used group twin shaft indexing mechanism of aircraft three, it is characterised in that：Including shell (5), one in the shell (5)
Side is equipped with outline border shafting, and inside casing shafting is provided in the outline border shafting, and the outline border shafting includes being arranged in shell (5)
The first motor (1) of one side, first motor (1) is interior mounted on shell (5) by clutch shaft bearing (3) with stent (10),
Clutch shaft bearing (3) side is equipped with the first grating (2) for detection support (10) swing offset, first motor (1)
Driving arm (10) makees the rotation of clutch shaft bearing (3) axle center, and the inside casing shafting includes the second motor being arranged on stent (10)
(9), second motor (9) and table top (6) by second bearing (8) on stent (10), the second bearing (8) one
Side is equipped with the second grating (7) for examining table top (6) swing offset, is equipped with used group (4) on the table top (6), described second
Motor (9) driving table top (6) makees the rotation of second bearing (8) axle center, and the stent (10) is the stent (10) of right angle L-type structure,
The clutch shaft bearing (3) and second bearing (8) are using accurate crossed roller bearing, first grating (2) and the second grating
(7) absolute type Circular gratings are used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720662028.0U CN207487688U (en) | 2017-06-08 | 2017-06-08 | A kind of certainly used group twin shaft indexing mechanism of aircraft three |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720662028.0U CN207487688U (en) | 2017-06-08 | 2017-06-08 | A kind of certainly used group twin shaft indexing mechanism of aircraft three |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207487688U true CN207487688U (en) | 2018-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720662028.0U Active CN207487688U (en) | 2017-06-08 | 2017-06-08 | A kind of certainly used group twin shaft indexing mechanism of aircraft three |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631879A (en) * | 2018-11-15 | 2019-04-16 | 湖北三江航天红峰控制有限公司 | Orthogonal locking double-shaft indexing mechanism |
| CN110864706A (en) * | 2019-11-13 | 2020-03-06 | 北京航天时代激光导航技术有限责任公司 | Method and system for testing locking precision of biaxial rotation frame inertial measurement unit |
| CN112217335A (en) * | 2019-07-10 | 2021-01-12 | 九江精密测试技术研究所 | Compact type accurate driving shaft system with limiting function |
-
2017
- 2017-06-08 CN CN201720662028.0U patent/CN207487688U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631879A (en) * | 2018-11-15 | 2019-04-16 | 湖北三江航天红峰控制有限公司 | Orthogonal locking double-shaft indexing mechanism |
| CN109631879B (en) * | 2018-11-15 | 2022-05-13 | 湖北三江航天红峰控制有限公司 | Orthogonal locking double-shaft indexing mechanism |
| CN112217335A (en) * | 2019-07-10 | 2021-01-12 | 九江精密测试技术研究所 | Compact type accurate driving shaft system with limiting function |
| CN110864706A (en) * | 2019-11-13 | 2020-03-06 | 北京航天时代激光导航技术有限责任公司 | Method and system for testing locking precision of biaxial rotation frame inertial measurement unit |
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