CN205887251U - Main shaft device - Google Patents
Main shaft device Download PDFInfo
- Publication number
- CN205887251U CN205887251U CN201620543026.5U CN201620543026U CN205887251U CN 205887251 U CN205887251 U CN 205887251U CN 201620543026 U CN201620543026 U CN 201620543026U CN 205887251 U CN205887251 U CN 205887251U
- Authority
- CN
- China
- Prior art keywords
- mentioned
- rotary shaft
- gas bearing
- main shaft
- rotation axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model provides a main shaft device, it becomes the flat constitution that axial length is short, can realize miniaturizedly and the lightweight. This main shaft device has: the rotation axis, its within range at the circumferencial direction is equipped with a plurality of turbine blade, the casing, it accomodates this rotation axis, and gas bearing, it is installed on this casing, the supply of passing through gases and for above -mentioned casing with the mode of non -contact with above -mentioned rotation axis floating bearing, above -mentioned a plurality of turbine blade are for above -mentioned gas bearing and dispose in radial inboard, and overlap in the axial with this gas bearing, through making above -mentioned rotation axis rotary driving to a plurality of turbine blade jet gas of the aforesaid, above -mentioned main shaft device's characterized in that, when establishing above -mentioned casing into L in the ascending length of axle of above -mentioned rotation axis, and when establishing the length on the width direction of above -mentioned casing into D, < D's mode forms with L, and be equipped with the workpiece setting portion that supplies workpiece setting on above -mentioned rotation axis, above -mentioned workpiece setting portion overlaps in the axial with this gas bearing.
Description
Technical field
This utility model is related to main shaft device, relates more specifically to preferably use the main shaft dress in electrostatic sprayer
Put.
Background technology
In the past, knew such main shaft as Patent Document 1 as the main shaft device being used in electrostatic sprayer
Device.This main shaft device has: rotary shaft, and it is provided with cup on axial one end, and sets on axial the other end
There are multiple turbo blades；The housing interting for rotary shaft；With the crust of the device of storage case, by multiple turbo blades injection
Gas and make rotary shaft rotate.In addition, electrostatic sprayer is equipped on to use on multi-joint mechanical arm mostly.In addition, this rotation
Axle is radially rotatably supported by by the gas bearing being arranged on housing.And, rotary shaft passes through following magnetic
Balance between power and counter-force and be supported by along thrust direction, wherein, magnetic force be to be attracted by the Magnet installed on housing convex
The power of edge, this counter-force is to power during flange part gas injection by gas bearing.But, in main shaft as patent documentation 1
In device, the axial one end being provided with the rotary shaft of cup extends very long from flange part in the axial direction.Thus, work as rotation
During axle high-speed rotation, the whirling of rotary shaft becomes big, and, the resonant frequency of rotary shaft low it is therefore desirable to for dangerous speed
Spend and take some countermeasures.
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2006-77797 Japanese Laid Open Patent
Utility model content
In order to solve above-mentioned problem, this utility model provides a kind of main shaft device, has: rotary shaft, it is in circumferencial direction
In the range of be provided with multiple turbo blades；Housing, it receives this rotary shaft；And gas bearing, it is installed on the housing, passes through
The supply of gas and with respect to above-mentioned housing in a non-contact manner by above-mentioned rotary shaft floating support, above-mentioned multiple turbo blades
Configure in radially inner side with respect to above-mentioned gas bearing, and overlapping in the axial direction with this gas bearing, by above-mentioned multiple
Turbo blade gas injection and make above-mentioned rotary shaft rotation driving, above-mentioned main shaft device is characterised by, when above-mentioned housing exists
Length in the axial direction of above-mentioned rotary shaft is set to l, and when the length on the width of above-mentioned housing is set to d, with l ＜ d's
Mode is formed, and is provided with the workpiece installation portion installed for workpiece, above-mentioned workpiece installation portion and this gas in above-mentioned rotary shaft
Bearing is overlapping in the axial direction.
The effect of utility model
According to main shaft device of the present utility model, workpiece installation portion is overlapping in the axial direction with this gas bearing, thus, it is possible to
Shorten the axial length of rotary shaft.Thereby, it is possible to reduce the whirling of rotary shaft, in addition, it is possible to increase the resonance of rotary shaft
Frequency.In addition, multiple turbo blades configure with respect to gas bearing in radially inner side, therefore the rotation of rotary shaft when inertia
Moment diminishes, and can reduce time when carrying out acceleration and deceleration.
Brief description
Fig. 1 is the sectional view representing main shaft device of the present utility model.
Specific embodiment
The main shaft device 10 of present embodiment has: rotary shaft 12, it is provided with multiple turbines in the range of circumferencial direction
Blade 11；Housing 20, it receives this rotary shaft 12；Gas bearing 40, it is arranged on this housing 20, and by the supply of gas
And with respect to above-mentioned housing in a non-contact manner by above-mentioned rotary shaft 12 floating support, above-mentioned multiple turbo blades 11 with respect to
Above-mentioned gas bearing 40 and configure in radially inner side and overlapping in the axial direction with this gas bearing 40, by above-mentioned multiple whirlpools
Impeller blade 11 gas injection and make the rotation driving of above-mentioned rotary shaft 12, this main shaft device is characterised by, when by above-mentioned housing 20
Length in the axial direction of above-mentioned rotary shaft 12 is set to l, and when the length on the width of above-mentioned housing 20 is set to d, with l
The mode of ＜ d is formed, and is provided with the workpiece installation portion 15 installed for workpiece, above-mentioned workpiece installation portion in above-mentioned rotary shaft 12
15 is overlapping in the axial direction with this gas bearing 40.
According to main shaft device of the present utility model, workpiece installation portion is overlapping in the axial direction with this gas bearing, thus, it is possible to
Shorten the axial length of rotary shaft.Thereby, it is possible to reduce the whirling of rotary shaft, in addition, it is possible to increase the resonance of rotary shaft
Frequency.In addition, multiple turbo blades configure being used in the rotation of radially inner side, therefore rotary shaft with respect to gas bearing 40
Property moment diminishes, and can reduce time when carrying out acceleration and deceleration.
Claims (1)
1. a kind of main shaft device, has:
Rotary shaft, it is provided with multiple turbo blades in the range of circumferencial direction；
Housing, it receives this rotary shaft；With
Gas bearing, it is installed on the housing, in a non-contact manner will with respect to described housing by the supply of gas
Described rotary shaft floating support,
The plurality of turbo blade configures in radially inner side with respect to described gas bearing, and with this gas bearing in the axial direction
Overlap, by making described rotary shaft rotation driving to the plurality of turbo blade gas injection, the feature of described main shaft device
It is,
When by described housing, the length in the axial direction of described rotary shaft is set to l, and by the length on the width of described housing
When degree is set to d, formed in the way of l ＜ d, and the workpiece installation portion installed for workpiece is provided with described rotary shaft, described
Workpiece installation portion is overlapping in the axial direction with this gas bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620543026.5U CN205887251U (en) | 2016-06-06 | 2016-06-06 | Main shaft device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620543026.5U CN205887251U (en) | 2016-06-06 | 2016-06-06 | Main shaft device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205887251U true CN205887251U (en) | 2017-01-18 |
Family
ID=57767554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620543026.5U Expired - Fee Related CN205887251U (en) | 2016-06-06 | 2016-06-06 | Main shaft device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205887251U (en) |
-
2016
- 2016-06-06 CN CN201620543026.5U patent/CN205887251U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170118 Termination date: 20200606 |