CN201316809Y - Main shaft locking device - Google Patents
Main shaft locking device Download PDFInfo
- Publication number
- CN201316809Y CN201316809Y CNU2008202052547U CN200820205254U CN201316809Y CN 201316809 Y CN201316809 Y CN 201316809Y CN U2008202052547 U CNU2008202052547 U CN U2008202052547U CN 200820205254 U CN200820205254 U CN 200820205254U CN 201316809 Y CN201316809 Y CN 201316809Y
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- CN
- China
- Prior art keywords
- expanding sleeve
- main shaft
- locking
- outer expanding
- video disc
- 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
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Abstract
The utility model relates to a precision main shaft locking device, which consists of an internal expanding sleeve, an external expanding sleeve, a spring disc, a piston block, a fixed column, a retaining screw and a locking screw. The internal expanding sleeve is fixed on the main shaft and can rotate along with the main shaft; the external expanding sleeve is sleeved on the internal expanding sleeve; a conical surface through which the internal expanding sleeve and the external expanding sleeve are mutually matched is arranged therebetween; the external expanding sleeve is sleeved on the internal expanding sleeve by the conical surface; the spring disc is sleeved on the internal expanding sleeve; the external expanding sleeve is positioned between a rear flange of the main shaft and the spring disc; the spring disc is fixed with the rear flange by the fixed column and the retaining screw and locked with the external expanding sleeve by the retaining screw; and the piston block is arranged between the rear flange and the external expanding sleeve. The utility model adopts the deformation characteristic of the spring disc and the conicity locking mode, ensures that the locking of main shaft has no influence on the precision of the main shaft, as well as absolutely reliable locking and concise structure, thereby ensuring the precision of processing parts, and the precision and the service life of the main shaft.
Description
Technical field
Apparatus for locking main shaft of the present invention relates to a kind of apparatus for locking accurate main shaft, the apparatus for locking main shaft of the high-speed electric main shaft precision that especially a kind of machining center is used.
Background technology
The existing machine tool apparatus for locking main shaft is bulky, complex structure, locking are unreliable, and during locking owing to have eccentric error with main shaft, influence the precision of main shaft easily; And machining center generally all is used for the accurate digital control machining center with high-speed electric main shaft, and high especially to the required precision of main shaft, if apparatus for locking main shaft is influential to the main shaft precision, machining accuracy does not reach, and also can reduce the service life of main shaft bearing and main shaft; High speed and precision machining center electricity main shaft majority is applied to multi-shaft interlocked in addition, on the machining center such as five-axle linkage, the electricity main shaft generally is superimposed upon on the slide plate, about need doing, move forward and backward, also need to rotate, this just requires the volume of main shaft can not be too big, and existing apparatus for locking main shaft is generally bulky; Because existing milling-lathe machining center is a simplified structure, lathe tool is installed on the machining center electricity main shaft, this just requires apparatus for locking main shaft locking absolute reliable, and existing locking device is difficult to meet the demands.
Summary of the invention
The object of the present invention is to provide that a kind of volume is little, compact conformation, reliable lock, and the main shaft precision not have the apparatus for locking accurate main shaft that influences during locking.
In order to achieve the above object, the technical solution used in the present invention is: a kind of apparatus for locking main shaft is by inner expanding sleeve, outer expanding sleeve, the spring video disc, piston block and fixed leg, hold-down screw, lock-screw is formed, inner expanding sleeve is fixed on the main shaft, inner expanding sleeve can be with main axis rotation, outer expanding sleeve is enclosed within on the inner expanding sleeve, inner expanding sleeve, be provided with the conical surface that cooperatively interacts between the outer expanding sleeve, outer expanding sleeve is enclosed within on the inner expanding sleeve by the conical surface, the spring video disc is enclosed within on the inner expanding sleeve, outer expanding sleeve is between main shaft rear flange and spring video disc, the spring video disc passes through fixed leg, hold-down screw and rear flange are fixed, the spring video disc is by lock-screw and outer expanding sleeve locking, and piston block is located between rear flange and the outer expanding sleeve.Piston block is used to provide outer expanding sleeve locking main shaft power, spring video disc assurance outer expanding sleeve only axially moves and does not do radially and rotate, inner expanding sleeve have can not self-locking 20 awls of being outside one's consideration, outer expanding sleeve have can not self-locking 20 degree inner cones, utilize the spring video disc axially can be out of shape the principle that moves and radially be difficult to be out of shape easily, guarantee that power that outer expanding sleeve provides by piston block and spring and spring video disc axially moves and can not radially move, outer expanding sleeve is done when axially moving up, and the outer cone of inner expanding sleeve and the inner cone of outer expanding sleeve mesh together; When hydraulic oil was laid down, outer expanding sleeve broke away from inner expanding sleeve under the effect of spring video disc and spring.Parts such as big envelope that being provided with outside outer expanding sleeve provides hydraulic oil and oil circuit.Since outer expanding sleeve can with inner expanding sleeve in conjunction with after be fixed on again on the spring video disc with strain, therefore during outer expanding sleeve locking and main shaft definitely concentric, and its coupling mechanism force is axial, so the precision to main shaft during locking has no effect, and has guaranteed the precision of main shaft and the service life of main shaft; Owing to utilized the spring video disc to have the characteristic that axially can be out of shape easily and radially be difficult to be out of shape, locking device locking and disengaging and reliable; Employing can not self-locking the little tapering of 20 degree, it is reliable to guarantee that inner expanding sleeve and outer expanding sleeve break away from, and the more important thing is and axial force can be enlarged into radial load at double, thereby guarantee inner expanding sleeve and outer expanding sleeve positive engagement, has guaranteed the reliability of principal shaft locking; Since the structure of outer expanding sleeve and spring video disc in adopting, the locking device structure compactness, and occupation space is few, has guaranteed the simple for structure of machining center main shaft, is suitable for the turnning and milling Compositions of metal-working machines of various top grades.
Be provided with oil pocket in the outer expanding sleeve, piston block places in the oil pocket, is provided with big envelope and the oil circuit that hydraulic oil is provided in the outer expanding sleeve outside.
Inner expanding sleeve have can not self-locking 20 awls of being outside one's consideration, outer expanding sleeve have can not self-locking 20 degree inner cones.
The present invention establishes 6 piston blocks.Be provided with 6 equally distributed pistons in the outer expanding sleeve.
The invention has the beneficial effects as follows: a kind of apparatus for locking accurate main shaft of the present invention, the deformation characteristic and the tapering locking mode of spring video disc have been adopted, precision to main shaft when having guaranteed principal shaft locking has no effect, locks definitely reliable, simple for structure, thereby has guaranteed precision and the precision of main shaft and the service life of main shaft of process component.
Description of drawings
Accompanying drawing 1 is an apparatus for locking main shaft perspective view of the present invention.
Accompanying drawing 2 is apparatus for locking main shaft structural representations of the present invention.
Accompanying drawing 3 is apparatus for locking main shaft B-B cross-sectional schematic of the present invention.
Accompanying drawing 4 is apparatus for locking main shaft structural representations of the present invention.
Accompanying drawing 5 is apparatus for locking main shaft F-F cross-sectional schematic of the present invention.
Accompanying drawing 6 is inner expanding sleeve structural representations of the present invention.
Accompanying drawing 7 is inner expanding sleeve structural representations of the present invention.
Accompanying drawing 8 is outer expanding sleeve structural representations of the present invention.
Accompanying drawing 9 is spring video disc structural representations of the present invention.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
Among the figure: main shaft 1, inner expanding sleeve 2, outer expanding sleeve 3, spring video disc 4, piston block 5, lock-screw 6, adjustment pad 7, rear flange 8, fixed leg 10, hold-down screw 11.
As accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, shown in the accompanying drawing 5, apparatus for locking main shaft of the present invention is by inner expanding sleeve 2, outer expanding sleeve 3, spring video disc 4, piston block 5 and fixed leg 10, hold-down screw 11, lock-screw 6 is formed, be provided with the conical surface that cooperatively interacts between inner expanding sleeve and the outer expanding sleeve, inner expanding sleeve is located at the main shaft rear flange outside, inner expanding sleeve is fixed on the main shaft, inner expanding sleeve can be with main axis rotation, outer expanding sleeve and spring video disc are enclosed within on the inner expanding sleeve, outer expanding sleeve is between main shaft rear flange and spring video disc, the spring video disc is by fixed leg 10, hold-down screw 11 is fixed with rear flange, the spring video disc is by lock-screw 6 and outer expanding sleeve locking, fixed leg 10 passes outer expanding sleeve and is fixed on the rear flange, hold-down screw 11 is fixed on the spring video disc on the fixed leg, piston block is located between rear flange and the outer expanding sleeve, the assurance outer expanding sleeve only axially moves and does not do radially and rotate, piston block is used to provide outer expanding sleeve locking main shaft power, inner expanding sleeve have can not self-locking 20 awls of being outside one's consideration, outer expanding sleeve have can not self-locking 20 degree inner cones, piston block is located in the outer expanding sleeve, utilize the spring video disc axially can be out of shape the principle that moves and radially be difficult to be out of shape easily, the power that the assurance outer expanding sleeve provides by piston block and spring video disc axially moves and can not radially move, outer expanding sleeve is done when axially moving up, and the outer cone of inner expanding sleeve and the inner cone of outer expanding sleeve mesh together; When hydraulic oil was laid down, outer expanding sleeve broke away from inner expanding sleeve under the effect of spring video disc and spring.Between outer expanding sleeve 3 and spring video disc 4, be provided with to install and adjust pad 7.
Be provided with oil pocket in the outer expanding sleeve, piston block 5 places in the oil pocket, is provided with big envelope and the oil circuit that hydraulic oil is provided in the outer expanding sleeve outside.Be provided with 6 equally distributed piston blocks in the outer expanding sleeve, piston block 5 slides in oil pocket outer expanding sleeve 3 jack-up coming is contacted with inner expanding sleeve 2, with lock-screw 6 outer expanding sleeve 3 is fixed on the spring video disc 4 then, add on the lock-screw and adjust pad 7, guarantee that 4 pairs of outer expanding sleeves 3 of spring video disc have downward pressure, guarantee that outer expanding sleeve 3 effectively separates with inner expanding sleeve 2 after the oil pocket discharge degree, so that outer expanding sleeve 3 does not contact with inner expanding sleeve 2 during main shaft 1 rotation.When oil pressure feeds oil pocket, utilize the shortcoming of spring video disc 4 axial easy deformation that outer expanding sleeve 3 is moved up, outer expanding sleeve 3 and inner expanding sleeve 2 combinations, interior outer expanding sleeve locking utilizes the fabulous advantage of spring video disc 7 radial rigidities again, reach the purpose of locking main shaft 1, after oil pressure pressure sheds, under the effect of the rock deformation pressure of spring video disc 4, depress outer expanding sleeve 3 mobile, make it to break away from inner expanding sleeve 2, main shaft 1 can rotate freely.
The inner cone of the outer cone of inner expanding sleeve 2 and outer expanding sleeve 3 is taken as 10 degree, makes it reliably locking, can be easy to again separate, and has guaranteed its reliability.
Shown in accompanying drawing 4, accompanying drawing 5, the spring video disc is fixed with rear flange by fixed leg 10, hold-down screw 11, and fixed leg 10 passes outer expanding sleeve and is fixed on the rear flange, and hold-down screw 11 is fixed on the spring video disc on the fixed leg.
Shown in accompanying drawing 6, accompanying drawing 7, inner expanding sleeve have can not self-locking 20 awls of being outside one's consideration, inner expanding sleeve is located at the main shaft rear flange outside, inner expanding sleeve is fixed on the main shaft, inner expanding sleeve can be with main axis rotation.
As shown in Figure 8, outer expanding sleeve have can not self-locking 20 degree inner cones, be provided with oil pocket in the outer expanding sleeve, piston block places in the oil pocket, is provided with big envelope and the oil circuit that hydraulic oil is provided in the outer expanding sleeve outside.Be provided with 6 equally distributed piston blocks in the outer expanding sleeve, piston block slides in oil pocket outer expanding sleeve jack-up coming is contacted with inner expanding sleeve.
As shown in Figure 9, the axial deformation of spring video disc is easy, and radial rigidity is fabulous, has utilized spring video disc deformation characteristic to reach the purpose of locking and locking.
Claims (6)
1, a kind of apparatus for locking main shaft, it is characterized in that forming by inner expanding sleeve, outer expanding sleeve, spring video disc, inner expanding sleeve is fixed on the main shaft, inner expanding sleeve can be with main axis rotation, be provided with the conical surface that cooperatively interacts between inner expanding sleeve, the outer expanding sleeve, outer expanding sleeve is enclosed within on the inner expanding sleeve by the conical surface, and the spring video disc is enclosed within on the inner expanding sleeve, and outer expanding sleeve is between main shaft rear flange and spring video disc.
2, according to the described apparatus for locking main shaft of claim 1, it is characterized in that the spring video disc fixes by fixed leg, hold-down screw and rear flange, the spring video disc is by lock-screw and outer expanding sleeve locking.
3, according to the described apparatus for locking main shaft of claim 1, it is characterized in that inner expanding sleeve have can not self-locking 20 awls of being outside one's consideration, outer expanding sleeve have can not self-locking 20 degree inner cones.
4, according to the described apparatus for locking main shaft of claim 1, it is characterized in that being provided with oil pocket in the outer expanding sleeve, piston block places in the oil pocket.
5,, it is characterized in that being provided with in the outer expanding sleeve 6 equally distributed pistons according to the described apparatus for locking main shaft of claim 1.
6,, it is characterized in that being provided with big envelope and the oil circuit that hydraulic oil is provided in the outer expanding sleeve outside according to the described apparatus for locking main shaft of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202052547U CN201316809Y (en) | 2008-12-11 | 2008-12-11 | Main shaft locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202052547U CN201316809Y (en) | 2008-12-11 | 2008-12-11 | Main shaft locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201316809Y true CN201316809Y (en) | 2009-09-30 |
Family
ID=41195581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202052547U Expired - Fee Related CN201316809Y (en) | 2008-12-11 | 2008-12-11 | Main shaft locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201316809Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101433970B (en) * | 2008-12-11 | 2011-04-06 | 广州市敏嘉制造技术有限公司 | Apparatus for locking main shaft |
| CN107186500A (en) * | 2017-07-14 | 2017-09-22 | 钦州学院 | Spindle of numerical control lathe auxiliary locator |
-
2008
- 2008-12-11 CN CNU2008202052547U patent/CN201316809Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101433970B (en) * | 2008-12-11 | 2011-04-06 | 广州市敏嘉制造技术有限公司 | Apparatus for locking main shaft |
| CN107186500A (en) * | 2017-07-14 | 2017-09-22 | 钦州学院 | Spindle of numerical control lathe auxiliary locator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090930 Termination date: 20111211 |