CN209370285U - Air-floating main shaft carries compensation device - Google Patents
Air-floating main shaft carries compensation device Download PDFInfo
- Publication number
- CN209370285U CN209370285U CN201821953814.7U CN201821953814U CN209370285U CN 209370285 U CN209370285 U CN 209370285U CN 201821953814 U CN201821953814 U CN 201821953814U CN 209370285 U CN209370285 U CN 209370285U
- Authority
- CN
- China
- Prior art keywords
- air
- gas suspension
- main shaft
- floating main
- gas
- 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.)
- Withdrawn - After Issue
Links
- 238000007667 floating Methods 0.000 title claims abstract description 51
- 239000000725 suspension Substances 0.000 claims abstract description 84
- 238000006073 displacement reaction Methods 0.000 claims abstract description 15
- 239000007789 gas Substances 0.000 claims description 90
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 2
- 239000003546 flue gas Substances 0.000 claims description 2
- 238000011897 real-time detection Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Abstract
The utility model discloses air-floating main shafts to carry compensation device.The turn error of air-bearing carries out carrying compensation using counterweight or spring at present, cannot achieve real-time detection and carrying compensation.When air-floating main shaft generates turn error in the utility model, control valve adjusts the gas pressure of output under control of the controller, give air-floating main shaft air film relatively thin side carrying compensation, until the displacement sensor of three gas suspension components detect three gas suspension components gas suspension inner end it is equal with the radial clearance of air-floating main shaft when, the adjusting of stop control, air-floating main shaft returns to the gas suspension of three gas suspension components to heart position, realizes air-floating main shaft carrying compensation.The utility model realizes the real-time compensation of bearing capacity, and pressure sensor shows gas suspension bearing capacity；The radial clearance of gas suspension inner end and air-floating main shaft is adjustable, better adapts to different rotating speeds and the processing of different parts.
Description
Technical field
The utility model belongs to precision processing technology field, and in particular to a kind of air-floating main shaft carrying compensation device.
Background technique
With the development of science and technology, air-bearing has minimum coefficient of friction, higher rotating accuracy and pollution-free
The advantages that, it is more and more widely used in precision machinery and measuring instrument.Air bearing hydrostatic bearing has embodied a concentrated reflection of height
Fast, efficient, high-accuracy processing performance is one of the main direction of development of high-precision machine tool main shaft.In the work of air-floating main shaft
In the process since the turn error that the high speed rotation of cutter head feeding, cutting force and main shaft easily leads to main shaft increases, machining accuracy is difficult
To guarantee, when bearing capacity is excessive, or even make air-floating main shaft wear-out failure.
Currently, for the turn error that air-bearing is generated due to vibration or tool feeding during the work time, directly
It connects and carrying compensation is carried out using weight type or spring, the loader of this compensation way and the connection type of bearing are generally
Rigid connection cannot achieve detection in real time and carrying compensation, and loading force size not can guarantee accuracy.
Summary of the invention
The purpose of this utility model is to detect and carry the deficiency of compensation way for air-floating main shaft turn error, proposes one
Kind air-floating main shaft carries compensation device, can accurately air-floating main shaft turn error be detected and be carried compensation.
The technical scheme adopted by the utility model is
The utility model includes fixed bracket, control valve, the gentle over draft bearing assembly of snorkel；The fixation internal stent
It is hollow；Fixed bracket offers three stepped holes being evenly distributed, and the biggish hole section of stepped hole aperture is arranged outwardly；Three gas
Over draft bearing assembly is evenly distributed setting on fixed bracket, and the position of gas suspension component and the position of stepped hole one are a pair of
It answers；The gas suspension component include gas suspension, to heart adjusting rod, to the heart adjust rod set, pressure sensor, fixed plate and
Displacement sensor；Heart adjusting rod set is embedded in the support bracket fastened biggish hole section of stepped hole aperture；Fixed plate and fixed bracket
It is connected by screw to, and fixed plate medial surface is adjacent to heart adjusting rod set lateral surface；Heart adjusting rod is passed through in fixed plate
Heart hole and the lesser hole section of stepped hole aperture, and the external screw thread of heart adjusting rod is connect with the internal screw thread for adjusting rod set to the heart；Institute
It states and the inner end of heart adjusting rod and the outer end of pressure sensor is fixed；The central axis of pressure sensor and the center to heart adjusting rod
Axis collinear；The inner end of the pressure sensor is fixed with gas suspension outer end, the central axis and pressure sensing of gas suspension
The central axis of device is conllinear；The inner end of the gas suspension is arc surface；Gas suspension inner end is fixed positioned at axial centerline
There is displacement sensor；Gas suspension inner end offered on the circumference using displacement sensor center as the center of circle be evenly distributed it is more
A venthole；All ventholes are connected to the inside air flue gas outlet of gas suspension；The snorkel both ends are separately connected
The air intake of control valve and internal air flue；Control valve is fixed on fixed bracket；Aligning rotation is fixed with to the outer end of heart adjusting rod
Button；Aligning knob is equipped with graduation mark, and the scale value of graduation mark is the radial clearance of gas suspension inner end and air-floating main shaft；It is fixed
Plate is equipped with index line；The control valve of three gas suspension components is connect with air pump.
The fixation bracket is triangular in shape.
The utility model has the beneficial effect that
1. the influence factors such as friction, vibration when giving carrying force compensating, will not be passed to main shaft, not shadow by gas suspension
Ring the rotary motion of main shaft.
2. the air bearing of bikini supports, not only can be with even compensation bearing capacity, but also cutter head different directions may be implemented and add
Carry the compensation of power.
3. carrying out load compensation using control valve, closed-loop control is formed between displacement sensor and control valve, may be implemented
The real-time compensation of bearing capacity keeps loading accuracy higher, and the external force that compares load is more accurate, to improve spindle machine processing
Precision.
4. the radial clearance of gas suspension inner end and air-floating main shaft can be according to processing part different adjustment, thus preferably suitable
Different rotating speeds and different parts are answered to process.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the structural schematic diagram of gas suspension component in the utility model；
Fig. 3 is the schematic diagram that the utility model carries out spindle rotation error detection；
Fig. 4 is the gas path figure of the utility model；
Fig. 5 is the location diagram of gas suspension and air-floating main shaft in the utility model；
In figure: the fixed bracket of 1-, 2- control valve, 3- screw, 4- snorkel, 5- gas suspension, 6- pressure sensor, 7- pairs
The heart adjusts rod set, 8- fixed plate, and 9- enters gas to heart adjusting rod, 10- aligning knob, 11- air-floating main shaft, the inside 12- air flue, 13-
Mouthful, 14- displacement sensor.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
As shown in Fig. 1,2 and 5, air-floating main shaft carrying compensation device, including fixed bracket 1, control valve 2, snorkel 4 are gentle
Over draft bearing assembly；Fixed bracket 1 is used for the support of the gentle over draft bearing assembly of control valve 2；Fixed bracket is in the triangle of inner hollow
Shape, triangle are more firm；Fixed bracket offers three stepped holes being evenly distributed, the biggish hole section court of stepped hole aperture
Outer setting；Three gas suspension components are evenly distributed setting on fixed bracket, and the position of gas suspension component and ladder
The position in hole corresponds；Gas suspension component include gas suspension 5, to heart adjusting rod 9, to the heart adjust rod set 7, pressure sensing
Device 6, fixed plate 8 and displacement sensor 14；Rod set 7 is adjusted to the heart to be embedded in the biggish hole section of support bracket fastened stepped hole aperture；
Fixed plate 8 is connected by screw to fixed bracket, and 8 medial surface of fixed plate is adjacent to heart adjusting 7 lateral surface of rod set；To heart tune
Pole 9 passes through the centre bore and the lesser hole section of stepped hole aperture of fixed plate 8, and to the external screw thread of heart adjusting rod 9 and to heart tune
The internal screw thread connection of pole set 7；The outer end of inner end and pressure sensor 6 to heart adjusting rod 9 is fixed；In pressure sensor 6
Mandrel is conllinear with the central axis to heart adjusting rod 9；The measurement of realization 11 bearing capacity of air-floating main shaft of pressure sensor 6；Pressure passes
The inner end of sensor 6 is fixed with 5 outer end of gas suspension, and the central axis of gas suspension 5 and the central axis of pressure sensor 6 are total
Line；Gas suspension 5 is for adjusting turn error and support air-floating main shaft 11；The inner end of gas suspension 5 is arc surface；Gas suspension
5 inner ends are located at axial centerline and are fixed with displacement sensor 14, for detecting the turn error of air-floating main shaft 11；Gas suspension
5 inner ends offer be evenly distributed four ventholes on the circumference using 14 center of displacement sensor as the center of circle；Four ventilations
12 gas outlet of inside air flue of Kong Junyu gas suspension 5 is connected to；4 both ends of snorkel are separately connected control valve 2 and internal air flue 12
Air intake 13；Control valve 2 is fixed on fixed bracket 1 by screw 3；Aligning knob is fixed with to the outer end of heart adjusting rod 9
10；Aligning knob 10 is equipped with graduation mark, and the scale value of graduation mark is the radial clearance of gas suspension 5 inner end and air-floating main shaft；
Fixed plate 8 is equipped with index line；The aligning knob 10 of rotary pneumatic over draft bearing assembly adjust to the heart, three gas suspension components
Fixed plate 8 on index line when being directed toward the identical graduation of aligning knob 10, at 5 inner end of gas suspension of three gas suspension components
In on same cylindrical surface, completed at this point, being adjusted to the heart；The control valve 2 of three gas suspension components is connect with air pump, gas warp
Enter inside gas suspension 5 after control valve 2 from snorkel 4, flows through the inside air flue 12 of gas suspension, and by four venthole streams
Out, one layer of air film is formed between gas suspension 5 and air-floating main shaft 11, realizes the effect of support air-floating main shaft；Work as air-floating main shaft
Change admission pressure when 11 generation turn error and carrying compensation is carried out to air-floating main shaft.
The working principle that the air-floating main shaft carries compensation device is as follows:
1, the gas suspension of three gas suspension components is to the heart:
5 inner end of gas suspension of three gas suspension components compresses 11 surface of air-floating main shaft, and guarantees three air bearing branch
Index line is directed toward the identical graduation of aligning knob 10 in the fixed plate 8 of bearing assembly；Then rotary aligning knob 10, so as to heart tune
Pole 9 drives pressure sensor 6, gas suspension 5 and displacement sensor 14 together along air-floating main shaft 11 radially away from air-floating main shaft
11, when 5 inner end of gas suspension of three gas suspension components and the radial clearance of air-floating main shaft are L, stop rotating tune
Heart knob 10, wherein L according to processing part difference come value, the value usually within the scope of 0.01~0.03mm；At this point, three
Index line is directed toward the identical graduation of aligning knob 10, the air bearing of three gas suspension components in the fixed plate 8 of gas suspension component
Branch honours heart completion.
2, between gas suspension 5 and air-floating main shaft 11 air film formation:
The gas of air pump enters inside gas suspension 5 after control valve 2 from snorkel 4, flows through the inside gas of gas suspension
Road 12, and flowed out by four ventholes, air film is formed between gas suspension 5 and air-floating main shaft 11 supports air-floating main shaft, wherein
The exhaust outlet of 5 two sides of gas suspension gas between gas suspension 5 and air-floating main shaft 11, as shown in Figure 4；Due to three air bearing branch
The gas suspension 5 of bearing assembly is evenly distributed, the air film between the gas suspension 5 and air-floating main shaft 11 of three gas suspension components
Thickness is uniform, and air-floating main shaft 11 can the approximate rotary motion without frictional resistance.
3, the turn error detection and carrying compensation of air-floating main shaft:
11 rotary work of air-floating main shaft, when the displacement sensor 14 of three gas suspension components detects three gas suspensions
When 5 inner end of gas suspension of component and the unequal radial clearance of air-floating main shaft, illustrate air-floating main shaft 11 in high speed rotation or
Turn error is produced under the influence of cutter head feeding, as shown in figure 3, the air-film thickness uniform state around air-floating main shaft is broken
It is bad, the thicker side pressure reduction of gas air film of same volume is passed through (at this point, the gas suspension 5 of three gas suspension components is defeated
Gas pressure p1, p2, p3 out is unequal, and the center of air-floating main shaft 11 is displaced to O ' point by O point), which holds
Carrying power reduces；At this point, the control valve 2 of three gas suspension components adjusts the gas pressure of output respectively under control of the controller,
Give 11 air film of air-floating main shaft relatively thin side carrying compensation, until the displacement sensor 14 of three gas suspension components detects three
When 5 inner end of gas suspension of a gas suspension component is equal with the radial clearance of air-floating main shaft, the adjusting of stop control, air bearing
Main shaft 11 returns to the gas suspension of three gas suspension components to heart position, to realize air-floating main shaft carrying compensation；Three gas
The pressure sensor 6 of over draft bearing assembly shows the bearing capacity of three gas suspensions.
Claims (2)
1. air-floating main shaft carries compensation device, including fixed bracket, control valve, the gentle over draft bearing assembly of snorkel, feature exist
In: the fixation internal stent is hollow；Fixed bracket offers three stepped holes being evenly distributed, and stepped hole aperture is larger
Hole section be arranged outwardly；Three gas suspension components are evenly distributed setting on fixed bracket, and the position of gas suspension component
It sets and is corresponded with the position of stepped hole；The gas suspension component include gas suspension, to heart adjusting rod, to heart adjusting rod
Set, pressure sensor, fixed plate and displacement sensor；The support bracket fastened biggish hole of stepped hole aperture is embedded in heart adjusting rod set
In section；Fixed plate is connected by screw to fixed bracket, and fixed plate medial surface is adjacent to heart adjusting rod set lateral surface；To the heart
Adjusting rod passes through the centre bore and the lesser hole section of stepped hole aperture of fixed plate, and adjusts to the external screw thread of heart adjusting rod with to the heart
The internal screw thread of rod set connects；It is described that the inner end of heart adjusting rod and the outer end of pressure sensor are fixed；The center of pressure sensor
Axis is conllinear with the central axis to heart adjusting rod；The inner end of the pressure sensor is fixed with gas suspension outer end, gas suspension
Central axis it is conllinear with the central axis of pressure sensor；The inner end of the gas suspension is arc surface；Gas suspension inner end
Displacement sensor is fixed with positioned at axial centerline；Gas suspension inner end is on the circumference using displacement sensor center as the center of circle
Offer the multiple ventholes being evenly distributed；All ventholes are connected to the inside air flue gas outlet of gas suspension；It is described
Snorkel both ends be separately connected the air intake of control valve and internal air flue；Control valve is fixed on fixed bracket；The heart is adjusted
The outer end of bar is fixed with aligning knob；Aligning knob is equipped with graduation mark, and the scale value of graduation mark is gas suspension inner end and gas
The radial clearance of floating main shaft；Fixed plate is equipped with index line；The control valve of three gas suspension components is connect with air pump.
2. air-floating main shaft according to claim 1 carries compensation device, it is characterised in that: the fixation bracket is in triangle
Shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821953814.7U CN209370285U (en) | 2018-11-26 | 2018-11-26 | Air-floating main shaft carries compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821953814.7U CN209370285U (en) | 2018-11-26 | 2018-11-26 | Air-floating main shaft carries compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209370285U true CN209370285U (en) | 2019-09-10 |
Family
ID=67834035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821953814.7U Withdrawn - After Issue CN209370285U (en) | 2018-11-26 | 2018-11-26 | Air-floating main shaft carries compensation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209370285U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488689A (en) * | 2018-11-26 | 2019-03-19 | 杭州电子科技大学 | Air-floating main shaft carries compensation device and method |
| CN112809027A (en) * | 2021-01-14 | 2021-05-18 | 江苏博尚工业装备有限公司 | Low-vibration synchronous built-in electric spindle for machine tool |
-
2018
- 2018-11-26 CN CN201821953814.7U patent/CN209370285U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488689A (en) * | 2018-11-26 | 2019-03-19 | 杭州电子科技大学 | Air-floating main shaft carries compensation device and method |
| CN109488689B (en) * | 2018-11-26 | 2024-02-02 | 杭州电子科技大学 | Bearing compensation device and method for air floatation spindle |
| CN112809027A (en) * | 2021-01-14 | 2021-05-18 | 江苏博尚工业装备有限公司 | Low-vibration synchronous built-in electric spindle for machine tool |
| CN112809027B (en) * | 2021-01-14 | 2022-02-18 | 江苏博尚工业装备有限公司 | Low-vibration synchronous built-in electric spindle for machine tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190910 Effective date of abandoning: 20240202 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190910 Effective date of abandoning: 20240202 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |