CN201042767Y - Annular groove type cooling structure of machine tool principal axis liquid sliding surface bearing - Google Patents
Annular groove type cooling structure of machine tool principal axis liquid sliding surface bearing Download PDFInfo
- Publication number
- CN201042767Y CN201042767Y CNU2007200633917U CN200720063391U CN201042767Y CN 201042767 Y CN201042767 Y CN 201042767Y CN U2007200633917 U CNU2007200633917 U CN U2007200633917U CN 200720063391 U CN200720063391 U CN 200720063391U CN 201042767 Y CN201042767 Y CN 201042767Y
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- Prior art keywords
- machine tool
- sliding bearing
- bearing
- cannelure
- bearing block
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- Expired - Fee Related
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- 238000001816 cooling Methods 0.000 title claims abstract description 29
- 239000007788 liquid Substances 0.000 title claims abstract description 18
- 239000002826 coolant Substances 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
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- Auxiliary Devices For Machine Tools (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The utility model discloses a ring trench cooling structure of a machine tool spindle liquid sliding bearing, which includes that a ring trench is cut on the external wall of a sliding bearing supporting the machine tool spindle, an input channel and an output channel for cooling medium are provided on a bearing seat covering the sliding bearing, and the input channel and the output channel are communicated with the ring trench. The ring trench cooling structure of the machine tool spindle liquid sliding bearing is characterized by good cooling effect, reasonable structure, realization of the high-speed orientation and the precise treatment of machine tool machining, and so on.
Description
Technical field
The utility model relates to mechanical manufacturing field, relates in particular to the improvement of the cooling structure of sliding bearing of machine tool chief axis liquid.
Background technology
With high cutting speed, high feed speed, high manufacturing accuracy is that the high speed and precision processing of principal character is one of four big advanced manufacturing technologies in the present age, is to make manufacturing technology produce the new and high technology that revolutionary character for the second time leaps continue Numeric Control Technology after.The high speed and precision machining tool not only has high production efficiency, and can improve the machining accuracy and the surface quality of part significantly.The main shaft of high-speed precise machine tool is as the Core Feature parts, and the height of its performance directly has influence on the overall development level of high speed and precision machining tool, and the bearing of machine tool chief axis is to the even running important influence of machine tool chief axis.
At present, the bearing that is applied to the high-speed precise machine tool main shaft mainly contains magnetic suspension bearing, air bearing, rolling bearing and liquid sliding bearing.Wherein, magnetic suspension bearing rotating speed height, it is little to wear and tear, but since its control system complexity, the cost height, and its practicality as machine tool chief axis is restricted.Air bearing has the rotating speed height, and it is little to wear and tear, advantage of high precision, but, can only be used for the small-power main shaft of small cutting force processing because its rigidity is little, and bearing capacity is limited.Rolling bearing is the main support structure of present machine tool chief axis, has the speed height, simple in structure, can produce in batches, can integral replacing during maintenance etc. advantage, but there are two intrinsic deficiencies: the one, because rolling bearing is a high-frequency rotary work under contact condition, there are fretting wear and fatigue wear inevitably, service life is shorter, after work a period of time, must take main shaft apart keeps in repair, and the maintenance of main shaft and assembly technology complexity, level to the maintenance personal requires very high, maintenance or change main shaft and need expensive time and cost causes harmful effect to the production operation efficiency of lathe; The 2nd, because rolling bearing is to rely on the rigidity contact of limited rolling element that bearing capacity is provided, the local stress that raceway and ball touch inside and outside bearing is very high, and the local stress that does not touch is less, certainly existing in a circumferential direction and be out of shape uneven phenomenon, therefore adopt rolling bearing not to be suitable for machining accuracy and surface smoothness are required very high occasion, as precision grinder, fine boring machine etc. as the machine tool chief axis that supports.
Liquid sliding bearing is because the effect that bearing capacity is strong, lubricant medium has damping vibration attenuation and " homogenizing " error, therefore adopt liquid sliding bearing as the machine tool chief axis good rigidly, the rotating accuracy height that support, be very suitable for spindle unit as precision machine tool such as precision grinder and fine boring machine.But liquid sliding bearing exists shortcomings such as liquid medium frictional dissipation height, bearing temperature rise height, thereby causes the working speed of machine tool chief axis lower.The cooling of the bearing of existing liquid sliding bearing formula machine tool chief axis is many walks heat by lubricant medium at the automatic tape loop of oil circuit, exist oil mass few, take away shortcomings such as heat is few, cooling effect difference; Also have by increase bearing film gap, increasing oil mass and improve cooling effect, but can reduce the rigidity and the rotating accuracy of main shaft.Liquid sliding bearing formula machine tool chief axis is owing to exist above-mentioned defective, cause it to fail at present fully to realize that high speed uses on lathe, limited sliding bearing formula main shaft at a high speed, the performance of efficient, high-accuracy function.
The utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, and the annular slot type cooling structure of a kind of good cooling results, rational in infrastructure, the machine tool chief axis liquid sliding bearing that can realize machine tooling high speed, precise treatment is provided.
For solving the problems of the technologies described above, the utility model adopts following technical proposals: the annular slot type cooling structure of machine tool chief axis liquid sliding bearing of the present utility model, it is characterized in that it is to offer cannelure on the outer wall of the sliding bearing that supports machine tool chief axis, be provided with the input channel and the output channel of cooling medium on the bearing block outside being sheathed on sliding bearing, described input channel and output channel are communicated with cannelure respectively.
As further improvement of the utility model, described cooling medium input channel places bearing block one side, form by ingate and input hole, the ingate is radially setting in bearing block, the one end is communicated with cannelure, the other end is sealed by plug, input hole is axial setting and is communicated with the ingate in bearing block, described cooling medium output channel places the bearing block opposite side, be made up of outlet opening and delivery outlet, outlet opening is radially setting in bearing block, and the one end is communicated with cannelure, the other end is sealed by plug, and delivery outlet is axial setting and is communicated with outlet opening in bearing block.
Described ingate places a side of cannelure, and outlet opening places the opposite side of cannelure.
Compared with prior art, advantage of the present utility model is: by offer the cooling medium input channel on bearing block, cooling medium is transported in the cannelure that the sliding bearing cylindrical offered, sliding bearing is forced cooling, cooling medium in the cannelure is discharged by the cooling medium output channel on the bearing block again, input channel mouth and output channel mouth constitute the circulating cooling system of main shaft bearing by the cooling system outside pipeline and the main shaft, the utility model can be forced cooling to sliding bearing, good cooling results, in the allowed band of sliding bearing temperature rise, can improve machine spindle speed greatly, can make simultaneously machine tool chief axis keep good rigidity, the characteristic that rotating accuracy is high realizes the machine tooling high speed, precise treatment; It is simple and reasonable, be convenient to processing, low cost of manufacture.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Each label is represented among the figure:
1, machine tool chief axis 2, sliding bearing
3, bearing block 21, cannelure
31, input channel 32, output channel
311, ingate 312, input hole
321, outlet opening 322, delivery outlet
33, plug
The specific embodiment
As shown in Figure 1, the annular slot type cooling structure of machine tool chief axis liquid sliding bearing of the present utility model, it is to offer cannelure 21 on the outer wall of the sliding bearing 2 of supporting machine tool chief axis 1, be provided with the input channel 31 and the output channel 32 of cooling medium on the bearing block 3 outside being sheathed on sliding bearing 2, be full of lubricant medium between the periphery of the inner headed face of sliding bearing 2 and machine tool chief axis 1.Cooling medium input channel 31 places bearing block 3 tops, form by ingate 311 and input hole 312, ingate 311 is radially setting in bearing block 3, and place a side of cannelure 21, the one end is communicated with cannelure 21, and the other end is by plug 33 sealings, and input hole 312 is axial setting in bearing block 3, the one end is communicated with ingate 311, and the output port of the cooling system outside the other end and the machine tool chief axis 1 joins.Cooling medium output channel 32 places bearing block 3 belows, form by outlet opening 321 and delivery outlet 322, outlet opening 321 is radially setting in bearing block 3, place the opposite side of cannelure 21, the one end is communicated with cannelure 21, and the other end is by plug 33 sealings, and delivery outlet 322 is axial setting in bearing block 3, the one end is communicated with outlet opening 321, and the recovery port of the other end and cooling system is joined.Ingate 311 and outlet opening 321 place the both sides of cannelure 21 respectively, help the abundant cooling of sliding bearing 2.
The cooling medium input channel of offering on the bearing block 3 31 is transported to the cooling medium of cooling system in the cannelure 21 that sliding bearing 2 cylindricals offer, cooling medium in the cannelure 21 is discharged by the cooling medium output channel on the bearing block 3 32 again, input channel 31 and output channel 32 by pipeline respectively with main shaft 1 outside the output port of cooling system link to each other with recovery port, form the circulating cooling system of main shaft bearing, sliding bearing 2 is forced cooling, good cooling results, in the allowed band of sliding bearing 2 temperature rises, can improve machine tool chief axis 1 rotating speed greatly, can make simultaneously machine tool chief axis 1 keep good rigidity, the characteristic that rotating accuracy is high realizes the machine tooling high speed, precise treatment.
Claims (3)
1. the annular slot type cooling structure of a machine tool chief axis liquid sliding bearing, it is characterized in that it is to offer cannelure (21) on the outer wall of the sliding bearing (2) that supports machine tool chief axis (1), be provided with the input channel (31) and the output channel (32) of cooling medium on the bearing block (3) outside being sheathed on sliding bearing (2), described input channel (31) and output channel (32) are communicated with cannelure (21) respectively.
2. the annular slot type cooling structure of machine tool chief axis liquid sliding bearing according to claim 1, it is characterized in that described cooling medium input channel (31) places bearing block (3) one sides, form by ingate (311) and input hole (312), ingate (311) is radially setting in bearing block (3), the one end is communicated with cannelure (21), the other end is sealed by plug (33), input hole (312) is axial setting and is communicated with ingate (311) in bearing block (3), described cooling medium output channel (32) places bearing block (3) opposite side, form by outlet opening (321) and delivery outlet (322), outlet opening (321) is radially setting in bearing block (3), the one end is communicated with cannelure (21), the other end is by plug (33) sealing, and delivery outlet (322) is axial setting and is communicated with outlet opening (321) in bearing block (3).
3. the annular slot type cooling structure of machine tool chief axis liquid sliding bearing according to claim 2 is characterized in that described ingate (311) places a side of cannelure (21), and outlet opening (321) places the opposite side of cannelure (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200633917U CN201042767Y (en) | 2007-05-31 | 2007-05-31 | Annular groove type cooling structure of machine tool principal axis liquid sliding surface bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200633917U CN201042767Y (en) | 2007-05-31 | 2007-05-31 | Annular groove type cooling structure of machine tool principal axis liquid sliding surface bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201042767Y true CN201042767Y (en) | 2008-04-02 |
Family
ID=39257654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200633917U Expired - Fee Related CN201042767Y (en) | 2007-05-31 | 2007-05-31 | Annular groove type cooling structure of machine tool principal axis liquid sliding surface bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201042767Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103862078A (en) * | 2014-04-08 | 2014-06-18 | 济南天旭数控机械有限公司 | Numerical control planar drill with main shaft cooling device |
-
2007
- 2007-05-31 CN CNU2007200633917U patent/CN201042767Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103862078A (en) * | 2014-04-08 | 2014-06-18 | 济南天旭数控机械有限公司 | Numerical control planar drill with main shaft cooling device |
| CN103862078B (en) * | 2014-04-08 | 2015-12-23 | 济南天旭数控机械有限公司 | Numerical control plane with main shaft cooling device bores |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUNAN HAIJIE SPINDLE TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: XIONG WANLI Effective date: 20110124 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 410082 GRINDING ENGINEERING CENTER, HUNAN UNIVERSITY, YUELU MOUNTAIN, HEXI,CHANGSHA CITY, HUNAN PROVINCE TO: 410205 ROOM 5, VENTURE BUILDING, HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY PARK CO., LTD., 186, GUYUAN ROAD, CHANGSHA HIGH-TECH DEVELOPMENT ZONE, CHANGSHA CITY, HUNAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110124 Address after: 410205 Hunan province Changsha Changsha city high tech Development Zone No. 186 Gu Yuan Lu, Hunan University science and Technology Park Co. business building room 515 Patentee after: Hunan Hai Jie main shaft Science and Technology Ltd. Address before: 410082 Grinding Engineering Center of Hunan University, Changsha, Hexi, Hunan, Patentee before: Xiong Wanli |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080402 Termination date: 20160531 |