CN206544106U - A kind of cantilevered is combined high hydrostatic pressure main shaft - Google Patents
A kind of cantilevered is combined high hydrostatic pressure main shaft Download PDFInfo
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- CN206544106U CN206544106U CN201720189660.8U CN201720189660U CN206544106U CN 206544106 U CN206544106 U CN 206544106U CN 201720189660 U CN201720189660 U CN 201720189660U CN 206544106 U CN206544106 U CN 206544106U
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- oil
- main shaft
- bearing shell
- bearing
- outer sleeve
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Abstract
High hydrostatic pressure main shaft is combined the utility model discloses a kind of cantilevered, including outer sleeve, main shaft, the rear and front end of outer sleeve is separately installed with drive end bearing bracket and rear end cap, the two ends of overcoat tube inner chamber are separately installed with bearing shell, main shaft is passed through from the inner chamber of two bearing shells and rear and front end is passed from drive end bearing bracket and rear end cap respectively, the front end of main shaft is provided with the flange for installing emery wheel, and rear end is provided with belt pulley；The oil groove of some indents is offered on the inwall of the bearing shell, offered on watt wall of bearing shell connected with inner chamber and a diameter of 0.5~0.7mm aperture, there is the oil charging structure for being offered on gap, the barrel of outer sleeve and hydraulic oil being introduced to bearing shell inner chamber through aperture between main shaft and the inwall of bearing shell；The cantilevered is combined the oil-returning structure that high hydrostatic pressure main shaft also includes being used to draw hydraulic oil from bearing shell inner chamber.The utility model cantilevered, which is combined high hydrostatic pressure main shaft, has the advantages that rotating accuracy is high, rigidity is high, service life is long.
Description
Technical field
The utility model is related to the part on a kind of lathe, is especially that a kind of cantilevered is combined high hydrostatic pressure main shaft.
Background technology
Main shaft is the important component on lathe, for installing emery wheel and driving emery wheel rotation to add to be ground to product
Work.The main shaft of prior art by self structure due to being limited, and rotating accuracy and rigidity be not high.General rotating accuracy is only
It can reach between 0.5~1.0 μm, mill run can only be processed, and some products high to required precision can not be met.
In order to solve the above problems, this case is given birth to therefrom.
The content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and there is provided a kind of rotating accuracy is high, rigidity is high, use
The cantilevered of long lifespan is combined high hydrostatic pressure main shaft.
To achieve these goals, the technical solution of the utility model is as follows：A kind of cantilevered is combined high hydrostatic pressure main shaft,
Including outer sleeve, main shaft, the rear and front end of outer sleeve is separately installed with drive end bearing bracket and rear end cap, the two ends difference of overcoat tube inner chamber
Bearing shell is installed, main shaft is passed through from the inner chamber of two bearing shells and rear and front end is passed from drive end bearing bracket and rear end cap respectively, main shaft
Front end flange for installing emery wheel is installed, rear end is provided with belt pulley；Offered on the inwall of the bearing shell in some
Offered on recessed oil groove, watt wall of bearing shell connected with inner chamber and a diameter of 0.5~0.7mm aperture, main shaft and bearing shell it is interior
There is the oil charging structure for being offered on gap, the barrel of outer sleeve and hydraulic oil being introduced to bearing shell inner chamber through aperture between wall；It is described
Cantilevered is combined the oil-returning structure that high hydrostatic pressure main shaft also includes being used to draw hydraulic oil from bearing shell inner chamber.
Further, the oil charging structure includes fuel feed hole one, fuel feed hole two, oil inlet passage, and fuel feed hole one is opened in outer
On sleeve outer wall, fuel feed hole two is opened on outer sleeve inwall and is oppositely arranged with the aperture on bearing shell, and oil inlet passage is opened in
The barrel of outer sleeve is interior and connects fuel feed hole one and fuel feed hole two.
Further, the oil charging structure has two groups, and two groups of oil charging structures distinguish corresponding two bearing shells.
Further, the oil-returning structure includes：The bearing shell inwall, which is located on the outside of oil groove, offers annular groove one, axle
Watt a watt pars intramuralis be provided with some axial passages, one end of axial passage is connected with annular groove one, the other end run through bearing shell watt
The inner face of wall is connected with the inner chamber of outer sleeve, and the oil discharge outlet one connected with inner chamber is offered on the barrel of outer sleeve.
Further, the oil-returning structure also includes：The outside that the bearing shell inwall is located at annular groove one offers annular
Offer and offered and oil outlet on the oil outlet one connected with annular groove two, the inwall of outer sleeve on groove two, watt wall of bearing shell
Oil discharge outlet two is offered on one oil outlet two being oppositely arranged, outer wall, the wall inner portion of outer sleeve offers oil discharge passage, and goes out
Oily passage connection oil outlet two and oil discharge outlet two.
Further, the oil-returning structure has two groups, and two groups of oil-returning structures distinguish corresponding two bearing shells.
Further, labyrinth ring, and the bearing shell, labyrinth ring are installed between the bearing shell and drive end bearing bracket of outer sleeve front end
And drive end bearing bracket three tight abutment successively.
Further, positioning bearing, and the bearing shell, positioning are installed between the bearing shell and rear end cap of overcoat tube rear end
Bearing and rear end cap three tight abutment successively.
After adopting the above technical scheme, the utility model is compared with prior art, with advantages below：
First, need endlessly to be passed through hydraulic oil when the utility model cantilevered is combined high hydrostatic pressure main shaft work, liquid
Force feed is entered by aperture can become hydraulic oil after bearing shell, and enter in oil groove, and one layer of oil film is formed between bearing shell and main shaft,
The oil film can by main shaft suspend get up so that main shaft is not contacted with bearing shell, thus by fluid by main shaft suspend get up, main shaft and
The frictional force of bearing shell is zero, is greatly improved rotating accuracy, and service life is long；Meanwhile, the main shaft supported by hydraulic oil
With high rigidity.
2nd, by designing outer sleeve, either which kind of lathe, as long as there is Kong Junke directly to fill in, safeguards and changes convenient,
It is also beneficial to change lathe simultaneously, changes equipment.
3rd, axially position is carried out to main shaft by the cooperation of bearing and bearing shell, it is ensured that alter to for zero the axial direction of main shaft.
4th, oil return is carried out to hydraulic oil using the physics mode of perforate, allowed oily smooth by way of water conservancy diversion natural time
Stream so that oil temperature heating is unrestrained, can greatly prolong service life.
Brief description of the drawings
Fig. 1 is sectional view of the present utility model.
Fig. 2 is the structural representation of the utility model intermediate bushing.
Shown in figure：1st, outer sleeve 2, main shaft 3, drive end bearing bracket 4, rear end cap 5, bearing shell 6, flange 7, belt pulley 8,
Oil groove 9, aperture 10, fuel feed hole 1, fuel feed hole 2 12, oil inlet passage 13, annular groove 1, axial passage 15, row
Hydraulic fluid port 1, annular groove 2 17, oil outlet 1, oil outlet 2 19, oil discharge outlet 2 20, oil discharge passage 21, labyrinth ring
22nd, bearing is positioned.
Embodiment
The utility model is further elaborated below by drawings and examples.
As depicted in figs. 1 and 2：A kind of cantilevered is combined high hydrostatic pressure main shaft, including outer sleeve 1, main shaft 2.Outer sleeve 1
Rear and front end is separately installed with drive end bearing bracket 3 and rear end cap 4.The two ends of the inner chamber of outer sleeve 1 are separately installed with bearing shell 5.Main shaft 2 from two
Passed through in the inner chamber of individual bearing shell 5 and rear and front end is passed from drive end bearing bracket 3 and rear end cap 4 respectively.The front end of main shaft 2, which is provided with, to be used for
The flange 6 of emery wheel is installed, rear end is provided with belt pulley 7.Some indents are offered on the inwall of bearing shell 5 and along the circle of bearing shell 5
Circumferential direction angularly equally distributed oil groove 8.Offer on watt wall of bearing shell 5 and to be connected with inner chamber and a diameter of 0.5~0.7mm
Aperture 9.The diameter of aperture 9 is very small, when it is implemented, the diameter of aperture 9 can choose 0.6mm.The aperture 9 also referred to as dams
Device, plays a part of supercharging.After hydraulic oil enters 5 inner chamber of bearing shell from the aperture 9, hydraulic oil can become hydraulic oil.Main shaft 2 with
There is small gap between the inwall of bearing shell 5.Offered on the barrel of outer sleeve 1 and introduce hydraulic oil in bearing shell 5 through aperture 9
The oil charging structure of chamber.In addition, also including the oil-returning structure for being used to draw hydraulic oil from the inner chamber of bearing shell 5.
Oil charging structure includes fuel feed hole 1, fuel feed hole 2 11, oil inlet passage 12.Fuel feed hole 1 is opened in outer sleeve 1
On outer wall, fuel feed hole 2 11 is opened on the inwall of outer sleeve 1 and is oppositely arranged with the aperture 9 on bearing shell 5, and oil inlet passage 12 is opened up
In in the barrel of outer sleeve 1 and connection fuel feed hole 1 and fuel feed hole 2 11.Fuel feed hole 1, oil inlet passage 12, fuel feed hole two
11 and aperture 9 form a complete oil inlet passage.Hydraulic oil is passed through from fuel feed hole 1, sequentially passes through oil inlet passage
12nd, fuel feed hole 2 11, aperture 9 are flowed into the inner chamber of bearing shell 5, and then are flowed into oil groove 8.It is so designed that, it is only necessary on outer sleeve 1
Open several holes and oil-feed can be achieved, simple in construction, oil-feed is smooth, will not block.
Above oil charging structure has two groups, and two groups of oil charging structures distinguish corresponding two bearing shells 5, that is to say, that pass through two groups
Oil charging structure, hydraulic oil is each led into the inner chamber to two bearing shells 5.
Labyrinth ring 21, and the bearing shell 5, labyrinth ring 21 are installed between the bearing shell 5 and drive end bearing bracket 3 of the front end of outer sleeve 1
And the three of drive end bearing bracket 3 tight abutment successively.Sealed, can played splendid by the leading section of 21 pairs of this main shafts 2 of labyrinth ring
Water proof and dust proof effect.
Positioning bearing 22, and bearing shell 5, the locating shaft are installed between the bearing shell 5 and rear end cap 4 of the rear end of outer sleeve 1
Hold 22 and the three of rear end cap 4 tight abutment successively.Axially position is carried out to main shaft 2 by the cooperation of bearing and bearing shell 5, it is ensured that
Alter to for zero the axial direction of main shaft 2.
In order to further improve performance of the present utility model, main shaft 2 is using with high rigidity, high rotating accuracy, high rigidity
Material be made, service life is long.
In addition, the utility model has also carried out key design to oil-returning structure, to reduce the heating of oil temperature in the course of work
Speed.The concrete structure of oil-returning structure is：The outside that the inwall of bearing shell 5 is located at oil groove 8 offers annular groove 1.Watt of bearing shell 5
Pars intramuralis is provided with some axial passages 14.One end of axial passage 14 is connected with annular groove 1, and the other end runs through 5 watts of bearing shell
The inner face of wall is connected with the inner chamber of outer sleeve 1.When it is implemented, axial passage 14 is settable five, and five axial passages
14 draw close side by side.The oil discharge outlet 1 connected with inner chamber is offered on the barrel of outer sleeve 1.Annular groove 1, axial passage 14,
The inner chamber of outer sleeve 1 and oil discharge outlet 1 form wherein one complete drainback passage.As not stalling for main shaft 2 is dynamic,
Hydraulic oil in the inner chamber of bearing shell 5 can be automatically flowed into annular groove 1, and is flowed into outer sleeve 1 by axial passage 14
Inner chamber in, eventually through oil discharge outlet 1 discharge.Lower section of the present utility model is provided with a main fuel tank, through oil discharge outlet 1
The hydraulic oil of discharge is discharged into main fuel tank.Setting main fuel tank is prior art means, therefore is not drawn into accompanying drawing.Based on above
Drainback passage, most of hydraulic oil carries out oil return by main drainback passage, but still has small part oil can be in bearing shell 5
Annular groove 1 is crossed in chamber and continues past excessive, this is accomplished by designing Article 2 drainback passage, that is, secondary drainback passage.Pair is returned
Oily passage concrete structure is：The outside that the inwall of bearing shell 5 is located at annular groove 1 offers annular groove 2 16.On watt wall of bearing shell 5
Offer the oil outlet 1 connected with annular groove 2 16.Offer and be oppositely arranged with oil outlet 1 on the inwall of outer sleeve 1
Oil outlet 2 18, offer oil discharge outlet 2 19 on outer wall.The wall inner portion of outer sleeve 1 offers oil discharge passage 20, and fuel-displaced
Passage 20 connects oil outlet 2 18 and oil discharge outlet 2 19.Annular groove 2 16, oil outlet 1, oil outlet 2 18, oil discharge passage 20
And oil discharge outlet 2 19 forms another complete drainback passage.Sub-fraction oil can cross annular in the inner chamber of bearing shell 5
Groove 1 is flowed into annular groove 2 16, and passes sequentially through oil outlet 1, oil outlet 2 18, oil discharge passage 20, eventually through row
Hydraulic fluid port 2 19 is discharged into main fuel tank.That is, the oil returned by two drainback passages is discharged into main fuel tank.Hydraulic oil
Annular groove 1 is crossed in the inner chamber of bearing shell 5 to flow into annular groove 2 16, has been had no ability to again toward excessive, so can be thorough
Bottom avoids oil leak.Moreover, carry out oil return to hydraulic oil using the physics mode of perforate, smooth by way of the water conservancy diversion nature of oil is allowed
Backflow so that oil temperature heating is unrestrained, and substantially heating is can be controlled within 8 DEG C, can greatly prolong service life.
Above oil-returning structure also has two groups, and two groups of oil-returning structures distinguish corresponding two bearing shells 5 that is, passing through two
Oil-returning structure, hydraulic oil is exported from the inner chamber of two bearing shells 5 respectively.
The utility model cantilevered needs endlessly to be passed through hydraulic oil when being combined high hydrostatic pressure main shaft work, hydraulic oil
Hydraulic oil can be become by being entered by aperture 9 after bearing shell 5, and be entered in oil groove 8, and one layer of oil is formed between bearing shell 5 and main shaft 2
Main shaft 2 can be suspended by film, the oil film so that main shaft 2 is not contacted with bearing shell 5, and main shaft 2 has suspended thus by fluid
Come, the frictional force of main shaft 2 and bearing shell 5 is zero, is greatly improved rotating accuracy, specific rotating accuracy is ground up within 0.2 μm
The product circularity come is very high；Meanwhile, the main shaft 2 supported by hydraulic oil has high rigidity.
Described above is enlightenment according to embodiment, and by above-mentioned description, relevant staff completely can be not
Deviate in the range of this invention thought, carry out various changes and amendments.The technical scope of this utility model is not
It is confined to the content on specification, it is necessary to the scope of its protection is determined according to right.
Claims (8)
1. a kind of cantilevered is combined high hydrostatic pressure main shaft, it is characterised in that：Including outer sleeve, main shaft, the rear and front end of outer sleeve
It is separately installed with drive end bearing bracket and rear end cap, the two ends of overcoat tube inner chamber are separately installed with bearing shell, main shaft is from the inner chamber of two bearing shells
In pass through and rear and front end is passed from drive end bearing bracket and rear end cap respectively, the front end of main shaft is provided with the flange for installing emery wheel,
Rear end is provided with belt pulley；Offered on the inwall of the bearing shell offered on the oil groove of some indents, watt wall of bearing shell with it is interior
Chamber connection and a diameter of 0.5~0.7mm aperture, have on gap, the barrel of outer sleeve between main shaft and the inwall of bearing shell and open
Provided with the oil charging structure that hydraulic oil is introduced to bearing shell inner chamber through aperture；The cantilevered, which is combined high hydrostatic pressure main shaft, also to be included being used for
The oil-returning structure that hydraulic oil is drawn from bearing shell inner chamber.
2. a kind of cantilevered according to claim 1 is combined high hydrostatic pressure main shaft, it is characterised in that：The oil charging structure bag
Fuel feed hole one, fuel feed hole two, oil inlet passage are included, fuel feed hole one is opened on overcoat drum outer wall, and fuel feed hole two is opened in outer sleeve
It is oppositely arranged on inwall and with the aperture on bearing shell, oil inlet passage is opened in the barrel of outer sleeve and connection fuel feed hole one is with entering
Oilhole two.
3. a kind of cantilevered according to claim 1 is combined high hydrostatic pressure main shaft, it is characterised in that：The oil charging structure has
Two groups, two groups of oil charging structures distinguish corresponding two bearing shells.
4. a kind of cantilevered according to claim 1 is combined high hydrostatic pressure main shaft, it is characterised in that：The oil-returning structure bag
Include：The bearing shell inwall, which is located on the outside of oil groove, offers annular groove one, and a watt pars intramuralis for bearing shell is provided with some axial passages,
One end of axial passage is connected with annular groove one, and the other end is connected through the inner face of bearing shell watt wall with the inner chamber of outer sleeve, outside
The oil discharge outlet one connected with inner chamber is offered on the barrel of sleeve.
5. a kind of cantilevered according to claim 4 is combined high hydrostatic pressure main shaft, it is characterised in that：The oil-returning structure is also
Including：The bearing shell inwall is offered positioned at the outside of annular groove one and offered and annular groove on annular groove two, watt wall of bearing shell
Offer and opened up on the oil outlet two being oppositely arranged with oil outlet one, outer wall on the oil outlet one of two connections, the inwall of outer sleeve
There is oil discharge outlet two, the wall inner portion of outer sleeve offers oil discharge passage, and oil discharge passage connection oil outlet two and oil discharge outlet two.
6. a kind of cantilevered according to claim 1 is combined high hydrostatic pressure main shaft, it is characterised in that：The oil-returning structure has
Two groups, two groups of oil-returning structures distinguish corresponding two bearing shells.
7. a kind of cantilevered according to claim 1 is combined high hydrostatic pressure main shaft, it is characterised in that：Positioned at outer sleeve front end
Bearing shell and drive end bearing bracket between labyrinth ring is installed, and the bearing shell, labyrinth ring and drive end bearing bracket three tight abutment successively.
8. a kind of cantilevered according to claim 1 is combined high hydrostatic pressure main shaft, it is characterised in that：Positioned at overcoat tube rear end
Bearing shell and rear end cap between positioning bearing is installed, and the bearing shell, positioning bearing and rear end cap three tight abutment successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720189660.8U CN206544106U (en) | 2017-03-01 | 2017-03-01 | A kind of cantilevered is combined high hydrostatic pressure main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720189660.8U CN206544106U (en) | 2017-03-01 | 2017-03-01 | A kind of cantilevered is combined high hydrostatic pressure main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206544106U true CN206544106U (en) | 2017-10-10 |
Family
ID=59994330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720189660.8U Expired - Fee Related CN206544106U (en) | 2017-03-01 | 2017-03-01 | A kind of cantilevered is combined high hydrostatic pressure main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206544106U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106826547A (en) * | 2017-03-01 | 2017-06-13 | 新昌县华科机电设备有限公司 | A kind of cantilevered is combined hydrostatic pressure main shaft high |
| CN114434281A (en) * | 2022-01-28 | 2022-05-06 | 四川省川磨岷机联合数控机器股份有限公司 | Multifunctional numerical control grinding machine |
-
2017
- 2017-03-01 CN CN201720189660.8U patent/CN206544106U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106826547A (en) * | 2017-03-01 | 2017-06-13 | 新昌县华科机电设备有限公司 | A kind of cantilevered is combined hydrostatic pressure main shaft high |
| CN114434281A (en) * | 2022-01-28 | 2022-05-06 | 四川省川磨岷机联合数控机器股份有限公司 | Multifunctional numerical control grinding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20171010 Termination date: 20180301 |