CN2936579Y - Static pressure heavy load driving device - Google Patents
Static pressure heavy load driving device Download PDFInfo
- Publication number
- CN2936579Y CN2936579Y CN 200620045214 CN200620045214U CN2936579Y CN 2936579 Y CN2936579 Y CN 2936579Y CN 200620045214 CN200620045214 CN 200620045214 CN 200620045214 U CN200620045214 U CN 200620045214U CN 2936579 Y CN2936579 Y CN 2936579Y
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- Prior art keywords
- pressure
- static pressure
- oil
- feedback
- axial thrust
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Abstract
The utility model discloses a static pressure heavy load driving device, which comprises a spindle, two high oil pressure radial static pressure bearings, a set of axial thrust static pressure bearings, a suit of pressure feedback devices, and a high pressure oil supply device. The two high oil pressure radial static pressure bearings are positioned respectively on the two ends of the spindle. Two sides of the front shaft shoulder of the spindle are separately provided with the axial thrust static pressure bearing. The axial thrust static pressure bearing and the radial static pressure bearing are an integrative structure. The high pressure oil supply device is provided with four oil recesses, and each of the two opposed oil recesses is connected with a pressure feedback module of the feedback device, and the axial thrust static pressure bearing is connected with the other pressure feedback module of the feedback device. The utility model has the advantages of extremely high slewing precision and driving capacity which can satisfy the seal ground finish processing of the large heavy load work pieces. The utility model also well solves the using stability of the static pressure bearing under high pressure well as to promote the carrying capacity of the static pressure bearing.
Description
Technical field
The utility model relates to a kind of static pressure load drive unit, especially a kind of crankshaft grinding machine static pressure heavy load drive unit.
Background technology
Because bent axle has very big mass eccentricity, during grinding end to end the frame driving shaft can be subjected to very big varying load radial load; Bent axle is a flexible body in addition, also can produce very big axial force by correct tailstock driving shaft in the rotation process.Usually for the grinding of middle-size and small-size bent axle, driving shaft all is to adopt roller bearings.Rolling bearing has only a few rolling element carrying usually when bearing radial load, alternate load is easy to make rolling element to damage for a long time, has reduced the service life of bearing.Under heavily loaded situation, the damage of bearing is particularly serious.The design of large-scale high-precision bearing simultaneously, manufacturing are also relatively more difficult, and cost is also very high.Therefore, need a kind of new heavy load drive unit to solve these problems, satisfy the grinding of large-scale heavy duty lotus bent axle.
Summary of the invention
The utility model is the static pressure drive unit that a kind of heavy load will be provided.This device can bear radially heavy load and axial heavy load, and it is high and driving force is strong to have a rotating accuracy, can satisfy the high-precision grinding of large-scale heavy duty lotus workpiece and process.
For achieving the above object, the technical scheme that is adopted is as follows:
A kind of static pressure heavy load drive unit comprises main shaft, and two high oil pressure are hydrostatic bearing radially, one group of axial thrust hydrostatic bearing, a casing pressure device for force feedback, high pressure oil supply equipment.
Two high oil pressure journal bearings lay respectively at the two ends of main shaft, and shaft shoulder both sides are equipped with the axial thrust hydrostatic bearing respectively before the main shaft, and wherein, the axial thrust hydrostatic bearing is structure as a whole with hydrostatic bearing radially; High oil pressure journal bearing is radially distributed with four oil pockets, and oil pocket facing each other links to each other with a pressure feedback module in the feedback device, and the axial thrust hydrostatic bearing links to each other with another pressure feedback module in the feedback device.
The film feedback device of pressure feedback device is a two-side film membrane feedback, and is combined by at least more than one feedback module, is provided with concentrated fuel feed hole on the combination feedback module, and is provided with oil outlet in each feedback module oil pocket.
High oil pressure journal bearing is installed at main shaft of the present utility model two ends, the axial thrust hydrostatic bearing is installed in shaft shoulder both sides before the main shaft, and axial thrust hydrostatic bearing is structure as a whole with hydrostatic bearing radially, has used two-side film membrane flow controller element by way of compensation in the system of bearing.Adopt above device machine-tool spindle system can bear very big radial load and axial load, have very high rotating accuracy and driving force, satisfy the high-precision grinding processing of large-scale heavy duty lotus bent axle.And can solve the stability that hydrostatic bearing uses under high pressure well, improve the bearing capacity of hydrostatic bearing.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the radial section structural representation of radially hydrostatic bearing;
Fig. 3 is a pressure feedback apparatus structure schematic diagram;
Fig. 4 is the left view of Fig. 3.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
As shown in Figure 1, a kind of static pressure heavy load drive unit, by 5, two high oil pressure of main shaft, 3,7, one groups of axial thrust hydrostatic bearing 1,2, one casing pressure device for force feedback of hydrostatic bearing radially, high pressure oil supply equipment is formed.
High oil pressure journal bearing 3,7 is installed at the two ends of main shaft 5 respectively, and shaft shoulder both sides are installed axial thrust hydrostatic bearing 1,2 respectively before the main shaft 5, and wherein, axial thrust hydrostatic bearing 2 is structure as a whole with hydrostatic bearing 3 radially.
As shown in Figure 2, high oil pressure journal bearing 3,7 is radially distributed with four oil pockets 4, and oil pocket 4 facing each other links to each other with a pressure feedback module 9 in the feedback device, and axial thrust hydrostatic bearing 2 links to each other with another pressure feedback module 9 in the feedback device.
As Fig. 3, shown in 4, the film feedback device of pressure feedback device is a two-side film membrane feedback, and is combined by at least more than one feedback module 9, is provided with on combination feedback module 9 and concentrates fuel feed hole 8, and be provided with oil outlet 11 in each feedback module 9 oil pocket.
Hydrodynamic journal liquid polymers of the present utility model are forcibly force feed liquid to be sent in axle and the gap, bearing ground by hydraulic system, utilize the static pressure supports main shaft (load) of liquid.In order to make hydrostatic bearing have certain bearing capacity and rigidity, used two-side film membrane flow controller element by way of compensation in the system of bearing.Diaphragm produces distortion when two oil pockets have pressure differential, and the liquid resistance in such two chambeies changes, and the pressure of oil pocket changes thereupon, reaches pressure balance until two oil pockets.
For making compact conformation, preceding radially hydrostatic bearing 3 with an axial thrust hydrostatic bearing 2 and hydrostatic bearing 3 radially as one.For obtaining maximum support rigidity, forward and backward radially hydrostatic bearing 3,7 has adopted the angle [alpha] and the oil pocket length of suitable sealing oil edge width and the oil groove degree of depth and decision loaded area.
What the two-side film membrane flow controller adopted is to concentrate oil-feed, the structure that corresponding each oil pocket is fuel-displaced respectively, and the pressure that can in good time detect an oil pocket changes.
Axial thrust hydrostatic bearing 1,2 is used in combination with preceding radially hydrostatic bearing 3,7, bears the basic load of system.The pressure of each static pressure oil pocket changes in the crankshaft grinding engineering, by the feedback effect of two-side film membrane flow controller, can reach balance rapidly.The gap length of main shaft 5 and bearing is fine has eliminated the influence to bearing rigidity of the heating of lubrication pressure oil and viscosity.
Adopt above device machine-tool spindle system can bear very big radial load and axial load, have very high rotating accuracy and driving force, satisfy the high-precision grinding processing of large-scale heavy duty lotus workpiece.
Claims (2)
1. a static pressure heavy load drive unit comprises main shaft (5), and two high oil pressure are hydrostatic bearing (3,7) radially, one group of axial thrust hydrostatic bearing (1,2), a casing pressure device for force feedback, high pressure oil supply equipment; It is characterized in that;
Described two high oil pressure journal bearings (3,7) lay respectively at the two ends of main shaft, and the preceding shaft shoulder of main shaft (5) both sides are equipped with axial thrust hydrostatic bearing (1,2) respectively, and wherein, axial thrust hydrostatic bearing (2) is structure as a whole with hydrostatic bearing (3) radially; High oil pressure journal bearing is radially distributed with four oil pockets (4), and oil pocket facing each other (4) links to each other with a pressure feedback module (9) in the feedback device, and axial thrust hydrostatic bearing (1) links to each other with another pressure feedback module (9) in the feedback device.
2. static pressure heavy load drive unit according to claim 1, it is characterized in that, the film feedback device of described pressure feedback device is the two-side film membrane feedback, and combine by at least more than one feedback module (9), on the feedback module (9) of combination, be provided with concentrated fuel feed hole (8), and be provided with oil outlet (11) in each feedback module (9) oil pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620045214 CN2936579Y (en) | 2006-08-28 | 2006-08-28 | Static pressure heavy load driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620045214 CN2936579Y (en) | 2006-08-28 | 2006-08-28 | Static pressure heavy load driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2936579Y true CN2936579Y (en) | 2007-08-22 |
Family
ID=38360598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620045214 Expired - Fee Related CN2936579Y (en) | 2006-08-28 | 2006-08-28 | Static pressure heavy load driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2936579Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287514A (en) * | 2010-06-03 | 2011-12-21 | 哈米尔顿森德斯特兰德公司 | Gear arrangement |
| CN110315433A (en) * | 2019-07-24 | 2019-10-11 | 马鞍山市恒利达机械刀片有限公司 | A kind of mandrel antidumping unit |
-
2006
- 2006-08-28 CN CN 200620045214 patent/CN2936579Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287514A (en) * | 2010-06-03 | 2011-12-21 | 哈米尔顿森德斯特兰德公司 | Gear arrangement |
| CN110315433A (en) * | 2019-07-24 | 2019-10-11 | 马鞍山市恒利达机械刀片有限公司 | A kind of mandrel antidumping unit |
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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 |
Granted publication date: 20070822 Termination date: 20150828 |
|
| EXPY | Termination of patent right or utility model |