CN1046695A - Axle system for precise machine-tools - Google Patents
Axle system for precise machine-tools Download PDFInfo
- Publication number
- CN1046695A CN1046695A CN 89102898 CN89102898A CN1046695A CN 1046695 A CN1046695 A CN 1046695A CN 89102898 CN89102898 CN 89102898 CN 89102898 A CN89102898 A CN 89102898A CN 1046695 A CN1046695 A CN 1046695A
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- Prior art keywords
- main shaft
- spherical bearing
- tools
- axle system
- relief arrangement
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Abstract
The present invention relates to a kind of static pressure axle system for precise machine-tools that adopts spherical bearing, it has the hydrostatic spindle of spherical bearing, the static pressure relief arrangement, flexible coupler between main shaft and the relief arrangement and fluid temperature control device, the hydrostatic spindle that it is characterized in that spherical bearing is the fluid pressure main shaft of the spherical bearing of two relative hemisphere compositions, the static pressure relief arrangement is a cylinder---thrust static pressure structure, flexible coupler between main shaft and the relief arrangement is a bellows, this shafting precision is very little, rigidity and bearing capacity are very big, equipment is simpler, and cost is lower, and adaptability is strong.
Description
The present invention relates to a kind of axle system for precise machine-tools, be in particular a kind of static pressure axle system for precise machine-tools that adopts spherical bearing.
From prior art as can be known, the Du pot No.3(that U.S. Y-12 factory produces is R-Q) fine turning lathe axle system and the Germany fine turning lathe axle of admiring polytechnical university in the Buddhist nun is, main shaft all adopts the static air pressure axle system of two hemispheres bearing, though they have easy to assembly, thermal deformation is little, advantage of high precision, but because of the density of air little, compressibility is very big, the rigidity of this main shaft is very poor, and bearing capacity is very little, and airborne moisture content also can cause the corrosion of hardware, as special-purpose corrosion-resistant material manufacturing or set up drying device, will increase cost greatly.
The present invention's purpose is: design a kind of liquid pressing shaft system that adopts the two hemispheres spherical bearing, it has the rotating accuracy height, and bearing capacity is big, low cost of manufacture, the advantage that adaptive capacity is strong.
Solution of the present invention is: a kind of fluid pressure axle system for precise machine-tools of spherical bearing, the hydrostatic spindle that spherical bearing is arranged, the static pressure relief arrangement, flexible coupler between main shaft and the relief arrangement and fluid temperature control device, the hydrostatic spindle that it is characterized in that spherical bearing are the fluid pressure main shaft of the spherical bearing of two relative hemisphere compositions: the static pressure relief arrangement is cylinder-thrust static pressure structure; Flexible coupler between main shaft and the off-load is a bellows.Because adopted the static pressure medium of fluid for axle system, the compressibility of fluid is very little, therefore bearing capacity and rigidity are very big, can bear tens as required, hundreds of even cross thousand newton's load, the precision of main shaft also is higher than static air pressure axle system, has adopted the static pressure medium of fluid for axle system, has guaranteed not corrosion-vulnerable of part such as main shaft, material less demanding, cost is lower; The fluid temperature control device is cheap than air control system for air, and fluid temperature control is constant, makes the thermal deformation of axle system very little; The static pressure relief arrangement has adopted cylinder-thrust hydrostatic bearing structure, and belt wheel and belt shaft change together, and zigzag sled oil duct is arranged, and has avoided leakage of oil, and the static pressure relief arrangement has absorbed the vibration of certain belt wheel high speed rotating; Main shaft connects with flexibility between the off-load axle and adopts bellows, because of bellows axially and radial rigidity very little, thereby when reducing the belt wheel high speed rotating greatly, influence to the rotating accuracy of main shaft, owing to adopted static pressure off-load and bellows, when belt wheel is rotated, the rotating accuracy of main shaft is not almost had, the torsional rigidity of bellows is but very big, can bear bigger cutting moment.In a word, this axle system, the precision height, bearing capacity is big.Cost is lower, adaptability is strong.
The principle of detailed description and structure with reference to the accompanying drawings below
Fig. 1 is the axle system for precise machine-tools structure chart;
Fig. 2 is for bellows connects schematic diagram;
Fig. 3 is spherical bearing oil pocket schematic diagram
As can be seen from Figure 1, two hemisphere 14,15 relative fixed with recessed ball seat 9,12, form ball and hydrostatic bearing with the ball of two hemisphere 14,15 in main shaft 13 two ends; Belt wheel 2 is fixing with belt wheel 4, belt shaft 4 places in the belt wheel axle sleeve 3, the zigzag sled oil duct 16 that protrusion is arranged between belt wheel 2 and belt wheel axle sleeve 3, avoided oil leakage phenomenon, the belt wheel axle sleeve endoporus face of cylinder oil pocket more than two is arranged, as can adopt four oil pockets, each oil pocket is connected with four apertures with board-like flow controller, the belt wheel axle sleeve have two oil pockets to connect with four apertures behind both ends of the surface and thrust plate 6 and the axle journal with board-like flow controller.Belt drives belt wheel 2 and rotates with belt shaft 4, is connected with a bellows 7 and makes power pass to main shaft 13 between belt shaft 4 and main shaft 13, makes it to rotate.In belt wheel 2, be provided with one or more than one adjustment piece, be used for belt wheel 2 and belt shaft 4 static and dynamic equilibrium adjustment.
Bellows 7 with the fastening method that connects between main shaft 13 and the belt shaft 4 is as can be seen from Figure 2, earlier that the processing of bellows two ends corrugated plate is smooth before the assembling, during assembling two to (each two) halfround bar slice 17,18, be inserted in the wave groove, with screw 19 two pairs of halfround bar slices are fastened on the thrust plate 6,8 then, in thrust plate 8, establish one or above revolving part 20 and regulate the static and dynamic equilibrium of main shaft 13, the installation processing request can be reduced greatly.
The oil pocket that recessed as can be seen from Figure 3 ball seat 9,12 is provided with more than two, as six oil pockets, flow pattern formula in they adopt with the oil circuit of pulling formula flow controller 10,11, because protruding ball seat 21 has the magnitude of interference with the hole of casing 22, therefore the fluid of heavy wool groove is impermeable mutually, and fluid is through pulling formula flow controller aperture a, b, c, d, e, f, flow through oil groove A, B, C, D, E, F and enter oil pocket A respectively
1, B
1, C
1, D
1, E
1, F
1Fuel tank is got back in the bearing clearance of flowing through again.
Claims (5)
1, a kind of fluid pressure axle system for precise machine-tools of spherical bearing, the hydrostatic spindle that spherical bearing is arranged, the static pressure relief arrangement, flexible coupler between main shaft and the relief arrangement, and the fluid temperature control device, the hydrostatic spindle that it is characterized in that spherical bearing is the fluid pressure main shaft of the spherical bearing of two relative hemisphere compositions; The static pressure relief arrangement is a cylinder--thrust static pressure structure; Flexible coupler between main shaft and the relief arrangement is a bellows.
2, the fluid pressure axle system for precise machine-tools that holds of sphere according to claim 1, it is characterized in that the fluid pressure structure that relief arrangement belt wheel and belt wheel are fixing, be provided with sawtooth sled oil duct between belt wheel and belt wheel axle sleeve, be provided with movingly on belt wheel, piece is adjusted in static balance.
3, spherical bearing fluid pressure axle system for precise machine-tools according to claim 1 is characterized in that being inserted in the bellows tank with two pairs of halfround bar slices between bellows and main shaft and the belt shaft, orders fixing with spiral shell.
4, the fluid pressure axle system for precise machine-tools of spherical bearing according to claim 1, the thrust that it is characterized in that main shaft is pulled and is provided with one or more static and dynamic equilibrium debugging mode piece.
5, the fluid pressure axle system for precise machine-tools of spherical bearing according to claim 1 is characterized in that main shaft hemisphere bearing face is provided with the oil pocket more than two or two, flow pattern formula in they adopt with the oil circuit of pulling the formula flow controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89102898 CN1015350B (en) | 1989-04-25 | 1989-04-25 | Axle system for precise machine-tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89102898 CN1015350B (en) | 1989-04-25 | 1989-04-25 | Axle system for precise machine-tools |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1046695A true CN1046695A (en) | 1990-11-07 |
| CN1015350B CN1015350B (en) | 1992-02-05 |
Family
ID=4854900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89102898 Expired CN1015350B (en) | 1989-04-25 | 1989-04-25 | Axle system for precise machine-tools |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1015350B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103659443A (en) * | 2013-12-10 | 2014-03-26 | 宁波海天精工股份有限公司 | Unloading mechanism of machine tool stand column |
| CN105478808A (en) * | 2016-01-13 | 2016-04-13 | 北京海普瑞森科技发展有限公司 | Pneumatic main shaft device with semispherical bearing |
-
1989
- 1989-04-25 CN CN 89102898 patent/CN1015350B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103659443A (en) * | 2013-12-10 | 2014-03-26 | 宁波海天精工股份有限公司 | Unloading mechanism of machine tool stand column |
| CN103659443B (en) * | 2013-12-10 | 2015-10-28 | 宁波海天精工股份有限公司 | A kind of machine pillar unloading mechanism |
| CN105478808A (en) * | 2016-01-13 | 2016-04-13 | 北京海普瑞森科技发展有限公司 | Pneumatic main shaft device with semispherical bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1015350B (en) | 1992-02-05 |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |