CN201988730U - Vertical ultra-precise liquid hydrostatic motorized spindle system - Google Patents
Vertical ultra-precise liquid hydrostatic motorized spindle system Download PDFInfo
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- CN201988730U CN201988730U CN2011201311334U CN201120131133U CN201988730U CN 201988730 U CN201988730 U CN 201988730U CN 2011201311334 U CN2011201311334 U CN 2011201311334U CN 201120131133 U CN201120131133 U CN 201120131133U CN 201988730 U CN201988730 U CN 201988730U
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- spindle
- main shaft
- axle sleeve
- fluid pressure
- chief axis
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Abstract
The utility model discloses a vertical ultra-precise liquid hydrostatic motorized spindle system, which relates to a hydrostatic motorized spindle system and solves the problems of low rigidity of a spindle system and poor power driving effect between a motor and a spindle in the conventional ultra-precise machine tool. A spindle sleeve of the system is provided with an annular groove, a plurality of axial loops and a plurality of radial loops; the axial loops are communicated with the radial loops; the axial loops and the radial loops are intersected at a corner at the bottom of the annular groove; two first half rings are oppositely sleeved on the spindle sleeve and are positioned in the annular groove; an oil storage chamber is formed between an oil cavity sleeve and the spindle sleeve; the spindle sleeve is fixedly arranged on a spindle bracket and is positioned in the spindle bracket; the spindle is arranged in the spindle sleeve; a gap is reserved between the spindle sleeve and the spindle; and the upper end of the spindle is fixedly connected with the output shaft of a direct current motor system through a thrust plate, and the lower end of the spindle is fixedly connected with a cutter disc. The system is used in a vertical ultra-precise machine tool.
Description
Technical field
The utility model relates to a kind of static pressure electric chief axis system, is specifically related to the close fluid pressure electric chief axis system of a kind of vertical superfinishing.
Background technology
Along with the continuous development of Aeronautics and Astronautics industry, more and more higher to the requirement of product stability and serviceability, the necessary processing and manufacturing precision that improves product parts presses for and improves the Ultraprecision Machining level.Super-precision machine tools is the core and the key of ultraprecise manufacture field, and the super-precision machine tools axis system then is its critical component, and the precision of main shaft directly has influence on the machining accuracy of part to be processed.Therefore, the design of ultraprecise axis system has become the core technology of super-precision machine tools design.Be mainly concerned with the problem of two aspects for the super-precision machine tools main shaft, comprise rigidity and two aspects of rotating accuracy of main shaft, therefore, high rigidity and high rotating accuracy are to estimate the very important technical indicator of ultraprecise main shaft.At present, the ultra-precision machine tool of China is using gases hydrostatic spindle mode and hybrid bearings mode widely, and motor is connected by rigidity or flexible clutch with main shaft, and the driving force of motor and axiality can exert an influence to rotating accuracy.Therefore, in the existing super-precision machine tools, its axis system rigidity is low, the power drive weak effect between motor and main shaft.
The utility model content
The purpose of this utility model is in order to solve in the existing super-precision machine tools, and its axis system rigidity is low, the problem of the power drive weak effect between motor and main shaft, and then provide a kind of vertical superfinishing close fluid pressure electric chief axis system.
The technical solution of the utility model is: the close fluid pressure electric chief axis system of a kind of vertical superfinishing comprises direct current motor system, electric machine support, axle is support and cutterhead, direct current motor system, electric machine support and axle are that support from top to bottom is fixedly connected sequentially, the close fluid pressure electric chief axis system of a kind of vertical superfinishing also comprises thrust plate, axle sleeve, grease chamber's cover and main shaft, offer annular groove on the outer wall of axle sleeve, offer a plurality of axial loops and a plurality of radial loop on the axle sleeve, a plurality of axial loops and a plurality of radial loop are connected, and each its corresponding radial loop in axial loop intersects at the bottom land corner of annular groove, grease chamber's cover is made of two first semi-rings, two first semi-rings are sleeved on the axle sleeve relatively, and two first semi-rings are positioned at annular groove, two first semi-rings install and form grease chamber's cover, form shoe cream room between grease chamber's cover and the axle sleeve, it is on the support that axle sleeve is fixedly mounted on axle, and it is support that axle sleeve is positioned at axle, main shaft is arranged in the axle sleeve, and leave the gap between axle sleeve and the main shaft, fixedlying connected with the output shaft of direct current motor system by thrust plate in the upper end of main shaft, fixedlys connected with cutterhead in the lower end of main shaft.
The utility model compared with prior art has following effect: 1. the utility model is by utilizing the gap between axle sleeve 6 and the main shaft 8, place oil film, the fluid pressure oil film is as the support of ultraprecise main shaft, the high rigidity and the ultra-precise revolving of main shaft have been realized, its axial rigidity can reach 4000N/ μ m, rotating accuracy can reach 0.02 μ m by the manufacture level of present part.2. the utility model adopts direct current motor system also to adopt the mode that directly drives as driving element, and dynamic effect is good, the transmission efficiency height.3. the utility model is applicable on various ways, multi-purpose super precision lathe, the ultraprecise milling machine.4. the utility model is fastened at same axle and has been realized high rigidity and high-precision ultraprecise revolution and directly driving simultaneously.5. the utility model is simple in structure, reliable operation.
Description of drawings
Fig. 1 is the integrally-built main cutaway view of the utility model; Fig. 2 is the vertical view of the utility model thrust plate; Fig. 3 is the partial enlarged drawing of Fig. 1 at the A place; Fig. 4 is the sectional view of grease chamber's cover.
The specific embodiment
The specific embodiment one: present embodiment is described in conjunction with Fig. 1, the close fluid pressure electric chief axis system of a kind of vertical superfinishing of present embodiment comprises direct current motor system 1, electric machine support 2, axle is support 3 and cutterhead 4, direct current motor system 1, electric machine support 2 and axle are that support 3 from top to bottom is fixedly connected sequentially, the close fluid pressure electric chief axis system of a kind of vertical superfinishing also comprises thrust plate 5, axle sleeve 6, grease chamber's cover 7 and main shaft 8, offer annular groove 6-1 on the outer wall of axle sleeve 6, offer a plurality of axial loop 6-2 and a plurality of radial loop 6-3 on the axle sleeve 6, a plurality of axial loop 6-2 and a plurality of radial loop 6-3 are connected, and its corresponding radial loop 6-3 of each axial loop 6-2 intersects at the bottom land corner of annular groove 6-1, grease chamber cover 7 is made of two first semi-ring 7-1, two first semi-ring 7-1 are sleeved on the axle sleeve 6 relatively, and two first semi-ring 7-1 are positioned at annular groove 6-1, two first semi-ring 7-1 install and form grease chamber's cover 7, form shoe cream room 7-1 between grease chamber's cover 7 and the axle sleeve 6, it is on the support 3 that axle sleeve 6 is fixedly mounted on axle, and it is support 3 that axle sleeve 6 is positioned at axle, main shaft 8 is arranged in the axle sleeve 6, and leave the gap between axle sleeve 6 and the main shaft 8, fixedlying connected with the output shaft 1-1 of direct current motor system 1 by thrust plate 5 in the upper end of main shaft 8, fixedlys connected with cutterhead 4 in the lower end of main shaft 8.
The shoe cream room 7-1 of present embodiment has not only realized sealing, has also improved the static pressure effect of liquid, improves the rotating accuracy of main shaft.
The specific embodiment two: in conjunction with Fig. 1 present embodiment is described, the direct current motor system 1 of present embodiment is a brush DC drive motors system.So be provided with, drive effective.Other composition is identical with the specific embodiment one with annexation.
Present embodiment is aspect driving, adopt no brush drive motor as driving element, the rotor 9 of no brush drive motor directly is contained on the axle, and the stator 10 that will not have a brush drive motor directly to be contained in axle be on the support 3, so just finish the main shaft 8 of ultraprecise fluid pressure support.
The brush DC drive motors system 1 that present embodiment is made of stator 10 and rotor 9 owing to there is not a brush, does not therefore have moment of friction between the stator 10 of this motor and the rotor 9, directly can produce rotation torque drive shaft 8 and rotate and cut.
The specific embodiment three: in conjunction with Fig. 1 present embodiment is described, the axle sleeve 6 of present embodiment and the gap H between the main shaft 8 are 4～6 μ m.So be provided with, effectively raise the rigidity of fluid pressure oil film, realized the ultra-precise revolving of main shaft 8.Other composition is identical with the specific embodiment one or two with annexation.
The specific embodiment four: in conjunction with Fig. 1 present embodiment is described, the main shaft 8 of present embodiment is a hollow spindle.So be provided with, reduce weight, inertia is little, is convenient to the fast rotational of electric main shaft.Other composition is identical with the specific embodiment three with annexation.
The specific embodiment five: present embodiment is described in conjunction with Fig. 1 and Fig. 3, axial loop 6-2 of each of present embodiment and thrust plate 5 and cutterhead 4 contacted ends have axial throttling channel 6-2-1, and each radial loop 6-3 and main shaft 8 contacted ends have radially throttling channel 6-3-1.So be provided with, with axial throttling channel 6-2-1 and radially the oil film in the throttling channel 6-3-1 as hydrodynamic journal liquid polymers axially and radial support, obtained very high rigidity, because hydrodynamic journal liquid polymers have the effect of homogenizing axle and the precision of axle sleeve own, make the axle cording that high rotating accuracy be arranged, realized putting the high power of main shaft, driving at a high speed and stably.Other composition is identical with the specific embodiment one with annexation.
Present embodiment in use, described a plurality of radially throttling channel 6-3-1 and a plurality of axial throttling channel 6-2-1 all are communicated with fueller, make to form between the upper surface of the lower surface of thrust plate 5 and axle sleeve 6 and go up thrust oil film 11, form thrust oil film 12 down between the lower surface of the upper surface of cutterhead 4 and axle sleeve 6, form radially oil film 13 between the inner surface of the outer surface of main shaft 8 and axle sleeve 6, effectively realized the ultra-precise revolving of main shaft 8.
Thrust plate 5 and cutterhead 4 link together with main shaft 8, highly pressurised liquid forms the fluid pressure film at the oil clearance place after axial throttling channel 6-2-1 throttling, highly pressurised liquid forms fluid pressure film, supports main shaft and radial load thereof at the oil clearance place after throttling channel 6-3-1 throttling radially.Because the fluid pressure film that axially and radially all has of main shaft 8 supports, make rotary part (main shaft 8, thrust plate 5 and cutterhead 4) all directly not contact radial and axial with axle sleeve 6, form the leveling effect of part geometry error, effectively improved the rigidity and the rotating accuracy of main shaft.
The specific embodiment six: in conjunction with Fig. 2 present embodiment is described, the close fluid pressure electric chief axis system of a kind of vertical superfinishing of present embodiment also comprises many reinforcement 5-1, and many reinforcement 5-1 are fixedly mounted on the upper surface of thrust plate 5.So be provided with, make rigidity raising, the weight saving of thrust plate 5, effectively raise the restriction effect of main shaft 8, improve the rigidity of main shaft.Other composition is identical with the specific embodiment one, two, four or five with annexation.
The specific embodiment seven: in conjunction with Fig. 1 and Fig. 2 present embodiment is described, the diameter D of the thrust plate 5 of present embodiment is Φ 400mm-Φ 500mm.So be provided with, be convenient to realize big thrust plane.Other composition is identical with the specific embodiment one, two, four or five with annexation.
Claims (7)
1. close fluid pressure electric chief axis system of vertical superfinishing, it comprises direct current motor system (1), electric machine support (2), axle is support (3) and cutterhead (4), direct current motor system (1), electric machine support (2) and axle are that support (3) from top to bottom is fixedly connected sequentially, it is characterized in that: the close fluid pressure electric chief axis system of a kind of vertical superfinishing also comprises thrust plate (5), axle sleeve (6), grease chamber cover (7) and main shaft (8), offer annular groove (6-1) on the outer wall of axle sleeve (6), offer a plurality of axial loops (6-2) and a plurality of radial loop (6-3) on the axle sleeve (6), a plurality of axial loops (6-2) and a plurality of radial loop (6-3) are connected, and each its corresponding radial loop in axial loop (6-2) (6-3) intersects at the bottom land corner of annular groove (6-1), grease chamber's cover (7) is made of two first semi-rings (7-1), two first semi-rings (7-1) are sleeved on the axle sleeve (6) relatively, and two first semi-rings (7-1) are positioned at annular groove (6-1), two first semi-rings (7-1) install and form grease chamber's cover (7), form shoe cream room (7-1) between grease chamber's cover (7) and the axle sleeve (6), it is on the support (3) that axle sleeve (6) is fixedly mounted on axle, and it is support (3) that axle sleeve (6) is positioned at axle, main shaft (8) is arranged in the axle sleeve (6), and leave the gap between axle sleeve (6) and the main shaft (8), fixedlying connected with the output shaft (1-1) of direct current motor system (1) by thrust plate (5) in the upper end of main shaft (8), fixedlys connected with cutterhead (4) in the lower end of main shaft (8).
2. the close fluid pressure electric chief axis system of a kind of vertical superfinishing according to claim 1 is characterized in that: direct current motor system (1) is a brush DC drive motors system.
3. the close fluid pressure electric chief axis system of a kind of vertical superfinishing according to claim 1 and 2 is characterized in that: the gap (H) between axle sleeve (6) and the main shaft (8) is 4～6 μ m.
4. the close fluid pressure electric chief axis system of a kind of vertical superfinishing according to claim 3 is characterized in that: main shaft (8) is a hollow spindle.
5. the close fluid pressure electric chief axis system of a kind of vertical superfinishing according to claim 1, it is characterized in that: each axial loop (6-2) has axial throttling channel (6-2-1) with thrust plate (5) and the contacted end of cutterhead (4), and each radial loop (6-3) has radially throttling channel (6-3-1) with the contacted end of main shaft (8).
6. according to claim 1,2, the close fluid pressure electric chief axis system of 4 or 5 described a kind of vertical superfinishings, it is characterized in that: the close fluid pressure electric chief axis system of a kind of vertical superfinishing also comprises many reinforcements (5-1), and many reinforcements (5-1) are fixedly mounted on the upper surface of thrust plate (5).
7. according to the device of claim 1,2, the pull-shaped titanium alloy of 4 or 5 described electric current auxiliary flexible pressure rollers, it is characterized in that: the diameter (D) of thrust plate (5) is Φ 400mm-Φ 500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201311334U CN201988730U (en) | 2011-04-28 | 2011-04-28 | Vertical ultra-precise liquid hydrostatic motorized spindle system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201311334U CN201988730U (en) | 2011-04-28 | 2011-04-28 | Vertical ultra-precise liquid hydrostatic motorized spindle system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201988730U true CN201988730U (en) | 2011-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201311334U Expired - Fee Related CN201988730U (en) | 2011-04-28 | 2011-04-28 | Vertical ultra-precise liquid hydrostatic motorized spindle system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201988730U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151853A (en) * | 2011-04-28 | 2011-08-17 | 哈尔滨工业大学 | Vertical ultra-precise hydrostatic pressure electric main shaft system |
-
2011
- 2011-04-28 CN CN2011201311334U patent/CN201988730U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151853A (en) * | 2011-04-28 | 2011-08-17 | 哈尔滨工业大学 | Vertical ultra-precise hydrostatic pressure electric main shaft system |
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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: 20110928 Termination date: 20180428 |