CN105690247A - Static-pressure high-speed motorized spindle - Google Patents
Static-pressure high-speed motorized spindle Download PDFInfo
- Publication number
- CN105690247A CN105690247A CN201610146013.9A CN201610146013A CN105690247A CN 105690247 A CN105690247 A CN 105690247A CN 201610146013 A CN201610146013 A CN 201610146013A CN 105690247 A CN105690247 A CN 105690247A
- Authority
- CN
- China
- Prior art keywords
- oil
- fluid seal
- fluid sealing
- sealing piece
- oil return
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a static-pressure high-speed motorized spindle. The static-pressure high-speed motorized spindle comprises a shell. A front fluid sealing piece, a rear fluid sealing piece, a front end cover, a rear end cover and a thrust bearing piece are mounted on the shell. A stator is mounted between the front fluid sealing piece and the rear fluid sealing piece. A rotary shaft is mounted among the front fluid sealing piece, the rear fluid sealing piece and the thrust bearing piece. A front oil cavity and a front oil return groove are formed between the front fluid sealing piece and the rotary shaft. A rear oil cavity and a rear oil return groove are formed between the rear fluid sealing piece and the rotary shaft. An oil cavity and an oil inlet are formed between the thrust bearing piece and a static-pressure thrust bearing flange. Oil inflow holes and oil return holes are formed in the rear end cover. Oil inflow channels and oil return channels are arranged on the rear end cover and the shell. One end of each oil inflow channel is connected with the corresponding oil inflow hole. The other end of each oil inflow channel communicates with the front oil cavity and the rear oil cavity. One end of each oil return channel is connected with the corresponding oil return hole. The other end of each oil return channel communicates with the front oil return groove and the rear oil return grove. The static-pressure high-speed motorized spindle has the beneficial effects of being ultrahigh in precision, ultrahigh in mechanical rigidity, ultralong in service life, efficient and capable of achieving energy saving and environment protection.
Description
Technical field
The present invention relates to accurate main shaft field, particularly relate to a kind of static pressure high-speed electric main shaft。
Background technology
Accurate main shaft used on the market at present, one class is mechanical main shaft, drive power by belt transmission and associated mode, another kind of is be placed in inside main shaft by motor, by driving the direct drive shaft work of power supply, main shaft support mode: mechanical main shaft has precise rolling bearing, dynamic and hydrostatic bearing, gas static pressure bearing, and electro spindle is entirely precise rolling bearing at present。The high-accuracy high-speed electric main shaft of this spline structure operationally can produce following defect:
1. running up due to rotating shaft, can produce substantial amounts of heat between bearing roller and raceway, affect bearing service life, and bearing needs timing (4 ~ 8 months) to change, and comparatively bothers；
2., owing to electro spindle needs the high rigidity of high accuracy, bearing must work under big precompression。The running power of loss motor。
3. bearing assembly precision is significantly high, changes difficulty big, needs professional to change。
4., owing to rolling bearing is that rolling element directly contacts with raceway, main shaft precision is limited to the quality of fit of bearing accuracy and shaft core and housing。
5. main shaft radial rigidity and axial stiffness are by bearing roller number quantitative limitation, only fixing point or linear contact lay, the little poor rigidity of contact area。After colliding, bearing is easily damaged。
Summary of the invention
It is an object of the invention to provide a kind of static pressure high-speed electric main shaft, have superhigh precision, superelevation mechanical rigid, extra long life (due to rotating shaft with support between to be that oil film is soft contact, coefficient of friction is little, close to zero abrasion) and than original electro spindle energy-conservation more than 50% on the market；Mainly using high-precision surface grinding, surfacing machining accuracy is enhanced about more than once。
In order to achieve the above object, the technical scheme is that
A kind of static pressure high-speed electric main shaft, including housing, described housing is provided with front fluid seal, rear fluid seal, front and rear cover and hydrostatic thrust bearing sheet, motor stator is installed between described front fluid seal and rear fluid seal, in the middle of described front fluid seal and rear fluid seal, rotating shaft is installed；Described rotating shaft is installed rotor；Offer front oil pocket and front oil-recovery tank between described front fluid seal and rotating shaft, between described rear fluid seal and rotating shaft, offer rear oil pocket and rear oil-recovery tank；Described rear end cap offers fuel feed hole and spill port, described rear end cap and housing offer oil input channel and back oil road；One end of described oil input channel is connected with fuel feed hole, and the other end is connected with front oil pocket；One end of described back oil road is connected with spill port, and the other end connects with front oil-recovery tank。
Described rotating shaft is provided with waterproof cover。
The invention has the beneficial effects as follows: the present invention replaces rolling bearing with hydrostatic bearing and combines with motor formation static pressure electric main shaft。There is superhigh precision, superelevation mechanical rigid, extra long life high-efficient energy-saving environment friendly。
Accompanying drawing explanation
Fig. 1 is the left view of the present invention。
Fig. 2 is the A-A sectional view of Fig. 1。
Detailed description of the invention
Embodiment 1
A kind of static pressure high-speed electric main shaft as shown in Fig. 12, including housing 1, described housing 1 is provided with front fluid seal 2, rear fluid seal 3, drive end bearing bracket 11, rear end cap 12 and hydrostatic thrust bearing sheet 18, it is provided with in the middle of motor stator 4, described front fluid seal 2 and rear fluid seal 3 between described front fluid seal 2 and rear fluid seal 3 and rotating shaft 6 is installed；Rotating shaft 6 is provided with hydrostatic thrust bearing flange 19, and described rotating shaft 6 is installed rotor 5；Offer front oil pocket 7 and front oil-recovery tank 8 between described front fluid seal 2 and rotating shaft 6, between described rear fluid seal 3 and rotating shaft 6, offer rear oil pocket 9 and rear oil-recovery tank 10；Offer oil pocket 20 between described front fluid seal 2 and hydrostatic thrust bearing sheet 18 and rotating shaft flange 19, described rear end cap 12 offers fuel feed hole 13 and spill port 14, described rear end cap 12 and housing 1 offer oil input channel 15 and back oil road 16；One end of described oil input channel 15 is connected with fuel feed hole 13, and the other end is connected with front oil pocket 7；One end of described back oil road 16 is connected with spill port 14, and the other end connects with front oil-recovery tank 8。
Rotating shaft 6 is provided with waterproof cover 17, plays waterproof action。
Above-mentioned oil input channel 15 and back oil road 16 all offer a plurality of, are connected with the fuel feed hole 13 of respective amount and spill port 14 respectively。
The operation principle of the present embodiment: oil is squeezed into from fuel feed hole, the oil pocket between rotating shaft 6 and front and back fluid seal is entered through oil input channel, form oil film, front fluid seal 2 and rear fluid seal 3 is made to separate by oil film with rotating shaft 6 respectively, the heat produced when making rotating shaft 6 operate is very low, it is greatly improved the radial rigidity of rotating shaft, owing to oil film is that soft contact has absorbing and homogenization。Reduce the running accuracy that main shaft has been done in the vibration of main shaft high。Rotating shaft and fluid seal noncontact operating, coefficient of friction is little, and rotating shaft is close to zero abrasion。It is substantially reduced power consumption, saves the energy。The mist of oil removing conventional master spindle cools down the environmental pollution brought, and increases service life。
Claims (2)
1. a static pressure high-speed electric main shaft, including housing (1), described housing (1) is provided with front fluid seal (2), rear fluid seal (3), drive end bearing bracket (11), rear end cap (12) and hydrostatic thrust bearing sheet (18), it is provided with in the middle of motor stator (4), described front fluid seal (2) and rear fluid seal (3) between described front fluid seal (2) and rear fluid seal (3) and rotating shaft (6) is installed；Described rotating shaft (6) is installed rotor (5)；Offer front oil pocket (7) and front oil-recovery tank (8) between described front fluid seal (2) and rotating shaft (6), between described rear fluid seal (3) and rotating shaft (6), offer rear oil pocket (9) and rear oil-recovery tank (10)；Described rear end cap (12) offers fuel feed hole (13) and spill port (14), described rear end cap (12) and offer oil input channel (15) and back oil road (16) on housing (1)；One end of described oil input channel (15) is connected with fuel feed hole (13), and the other end is connected with front oil pocket (7)；One end of described back oil road (16) is connected with spill port (14), and the other end connects with front oil-recovery tank (8)。
2. a kind of static pressure high-speed electric main shaft according to claim 1, it is characterised in that: described rotating shaft (6) is provided with waterproof cover (17)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610146013.9A CN105690247A (en) | 2016-03-15 | 2016-03-15 | Static-pressure high-speed motorized spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610146013.9A CN105690247A (en) | 2016-03-15 | 2016-03-15 | Static-pressure high-speed motorized spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105690247A true CN105690247A (en) | 2016-06-22 |
Family
ID=56221691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610146013.9A Pending CN105690247A (en) | 2016-03-15 | 2016-03-15 | Static-pressure high-speed motorized spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105690247A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009293707A (en) * | 2008-06-05 | 2009-12-17 | Denso Corp | Static oil pressure slide device |
| CN104154120A (en) * | 2014-07-23 | 2014-11-19 | 宁波中德高隆精密机械有限公司 | Dynamic pressure and static pressure combined bearing bush device |
| CN204504240U (en) * | 2015-03-25 | 2015-07-29 | 张黎明 | The efficient dynamic/static piezoelectric main shaft of a kind of high speed and super precision |
| CN204657733U (en) * | 2015-03-12 | 2015-09-23 | 安阳工学院 | One can pumpback friction stir welding dynamic/static piezoelectric main shaft |
| CN105149621A (en) * | 2015-09-01 | 2015-12-16 | 上海大学 | Electric spindle supported by magnetic suspension and lambdoid-groove dynamic pressure and static pressure gas combined bearings |
-
2016
- 2016-03-15 CN CN201610146013.9A patent/CN105690247A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009293707A (en) * | 2008-06-05 | 2009-12-17 | Denso Corp | Static oil pressure slide device |
| CN104154120A (en) * | 2014-07-23 | 2014-11-19 | 宁波中德高隆精密机械有限公司 | Dynamic pressure and static pressure combined bearing bush device |
| CN204657733U (en) * | 2015-03-12 | 2015-09-23 | 安阳工学院 | One can pumpback friction stir welding dynamic/static piezoelectric main shaft |
| CN204504240U (en) * | 2015-03-25 | 2015-07-29 | 张黎明 | The efficient dynamic/static piezoelectric main shaft of a kind of high speed and super precision |
| CN105149621A (en) * | 2015-09-01 | 2015-12-16 | 上海大学 | Electric spindle supported by magnetic suspension and lambdoid-groove dynamic pressure and static pressure gas combined bearings |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160622 |
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| WD01 | Invention patent application deemed withdrawn after publication |