CN201042766Y - Rotor cage type cooling structure of machine tool principal axis liquid sliding surface bearing - Google Patents
Rotor cage type cooling structure of machine tool principal axis liquid sliding surface bearing Download PDFInfo
- Publication number
- CN201042766Y CN201042766Y CNU2007200633902U CN200720063390U CN201042766Y CN 201042766 Y CN201042766 Y CN 201042766Y CN U2007200633902 U CNU2007200633902 U CN U2007200633902U CN 200720063390 U CN200720063390 U CN 200720063390U CN 201042766 Y CN201042766 Y CN 201042766Y
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- hole
- sliding bearing
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- machine tool
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- 238000001816 cooling Methods 0.000 title claims abstract description 71
- 239000007788 liquid Substances 0.000 title claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 239000012809 cooling fluid Substances 0.000 claims description 18
- 210000003734 kidney Anatomy 0.000 claims description 13
- 230000008676 import Effects 0.000 claims description 6
- 238000003754 machining Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000110 cooling liquid Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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Abstract
The utility model discloses a squirrel-cage cooling structure of a machine tool spindle liquid sliding bearing, which includes that an input and an output channel of cooling liquid is provided on the bearing seat, and an input hole, an output hole and cooling holes are provided on a sliding bearing which is covered inside the bearing seat and supports the machine tool spindle; the input hole is composed of an inlet hole laid in the radial direction and an leading-in hole laid in the axial direction, both of which are positioned on the sliding bearing, and the inlet hole is communicated with the leading-in hole and the input channel respectively; the output hole is composed of an outlet hole laid in the radial direction and an educing hole laid in the axial direction, both of which are positioned on the sliding bearing, and the outlet hole is communicated with the educing hole and the output channel respectively; the cooling holes are through holes laid in the axial direction and distributed along the circumferential direction of the sliding bearing; the two end faces of the sliding bearing are provided with a ring trench, the leading-in hole and the adjacent cooling hole, the educing hole and the adjacent cooling hole, and the adjacent cooling holes are communicated via a waist-shaped trench on the bottom of the ring trench, and a sealing ring is provided in the ring trench. The utility model 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, 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
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, and the squirrel-cage 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 squirrel-cage cooling structure of machine tool chief axis liquid sliding bearing of the present utility model, it is input channel and the output channel that is provided with cooling fluid on bearing block, be provided with the input hole of cooling fluid on the sliding bearing of the supporting machine tool chief axis in being placed in bearing block, delivery outlet and at least one cooling hole, input hole is made up of ingate and entrance hole, the ingate is radial arrangement in sliding bearing, the one end entrance hole axial arranged with being sliding bearing is communicated with, the other end is communicated with input channel, described delivery outlet is made up of outlet opening and leadout hole, outlet opening is radial arrangement in sliding bearing, the one end leadout hole axial arranged with being sliding bearing is communicated with, the other end is communicated with output channel, the cooling hole is to be sliding bearing through hole axial arranged and that along the circumferential direction distribute, the both ends of the surface of sliding bearing are provided with cannelure, the bottom surface of cannelure is provided with kidney slot, between the adjacent cooling hole of entrance hole and entrance hole, be communicated with by a kidney slot respectively between the leadout hole cooling hole adjacent and between the adjacent cooling hole, be equiped with sealing ring in the cannelure with leadout hole.
Described cooling hole can be even number, and the outlet of entrance hole and the import of export mouth are positioned at the same end face of sliding bearing.
Described cooling hole can be odd number, and the outlet of entrance hole is positioned at an end face of sliding bearing, and the import of export mouth is positioned at the other end of sliding bearing.
Described input channel is by inlet hole and lead into the hole and form, inlet hole is radially setting in bearing block, the one end is communicated with the ingate, the other end is sealed by plug, leads into the hole and is axial setting and is communicated with inlet hole in bearing block, and described output channel is made up of tap and guide hole, tap is radially setting in bearing block, the one end is communicated with outlet opening, and the other end is sealed by plug, and the guide hole is axial setting and is communicated with tap in bearing block.
The outer wall of described sliding bearing is provided with the annular entry groove that communicates with the ingate, also is provided with the ring exit groove that communicates with outlet opening, and the ingate is communicated with inlet hole by the annular entry groove, and outlet opening is communicated with tap by the ring exit groove.
Compared with prior art, advantage of the present utility model is: the squirrel-cage cooling structure of machine tool chief axis liquid sliding bearing of the present utility model, by on bearing block, offering the cooling fluid input channel, in the input hole that cooling fluid is transported on the sliding bearing to be offered, be directed in sliding bearing by input hole again and be cooling hole axial arranged and that along the circumferential direction distribute, cooling fluid is cooled off sliding bearing through each cooling hole along the axial reversing current of sliding bearing, the cooling fluid discharge of the cooling fluid output channel on delivery outlet and bearing block again afterwards, input channel mouth on the bearing block and output channel mouth constitute the circulating cooling system of main shaft bearing by the cooling system outside pipeline and the machine tool chief axis.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, characteristic that rotating accuracy is high, realize machine tooling high speed, precise treatment; It is simple and reasonable, be convenient to processing, low cost of manufacture; On sliding bearing, be provided with annular entry groove and ring exit groove, when there is the radial angle deviation in the junction of the junction of inlet hole and ingate or tap and outlet opening, fluid media (medium) still can successfully enter the ingate or enter tap from outlet opening through the ring exit groove through the annular entry groove from inlet hole, reduction is to sliding bearing upper inlet hole, outlet opening and the enterprising oral pore of bearing block, the tap status requirement at circumferencial direction, and processing and assembly process process are better.
Description of drawings
Fig. 1 is the main TV structure schematic diagram (removing sealing ring) of the utility model embodiment 1;
Fig. 2 is the A-A revolved sectional view of Fig. 1;
Fig. 3 is the B-B cutaway view (removing sealing ring) of Fig. 2;
Fig. 4 is the C-C cutaway view of Fig. 1;
Fig. 5 is the main TV structure schematic diagram (removing sealing ring) of the utility model embodiment 2;
Fig. 6 is the D-D revolved sectional view of Fig. 5;
Fig. 7 is the E-E cutaway view (removing sealing ring) of Fig. 6.
Each label is represented among the figure:
1, machine tool chief axis 2, sliding bearing
3, bearing block 21, input hole
22, delivery outlet 31, input channel
32, output channel 33, plug
211, ingate 212, entrance hole
213, annular entry groove 221, outlet opening
222, leadout hole 223, ring exit groove
23, cooling hole 24, kidney slot
25, sealing ring 26, cannelure
311, inlet hole 312, lead into hole
321, tap 322, guide hole
The specific embodiment
Embodiment 1:
Shown in Fig. 1～4, the squirrel-cage cooling structure of machine tool chief axis liquid sliding bearing of the present utility model, it is input channel 31 and the output channel 32 that is provided with cooling fluid on bearing block 3, be provided with the input hole 21 of cooling fluid on the sliding bearing 2 of the supporting machine tool chief axis 1 in being placed in bearing block 3, delivery outlet 22 and odd number cooling hole 23, this example is five cooling holes 23, cooling hole 23 is for being sliding bearing 2 through holes axial arranged and that along the circumferential direction distribute, the both ends of the surface of sliding bearing 2 are provided with cannelure 26, the bottom surface of cannelure 26 is provided with kidney slot 24, the outlet of entrance hole 212 is positioned at an end face of sliding bearing 2, the import of export mouth 222 is positioned at the other end of sliding bearing 2, between the adjacent cooling hole 23 of entrance hole 212 and entrance hole 212, be communicated with by a kidney slot 24 respectively between the adjacent cooling hole 23 of leadout hole 222 and leadout hole 222 and between the adjacent cooling hole 23, be equiped with sealing ring 25 in the cannelure 26, sealing ring 25 is with the opening sealing of kidney slot 24.
Embodiment 2:
Shown in Fig. 5～7, the squirrel-cage cooling structure of machine tool chief axis liquid sliding bearing of the present utility model, it is input channel 31 and the output channel 32 that is provided with cooling fluid on bearing block 3, be provided with the input hole 21 of cooling fluid on the sliding bearing 2 of the supporting machine tool chief axis 1 in being placed in bearing block 3, delivery outlet 22 and even number cooling hole 23, this example is six cooling holes 23, cooling hole 23 is for being sliding bearing 2 through holes axial arranged and that along the circumferential direction distribute, the both ends of the surface of sliding bearing 2 are provided with cannelure 26, the bottom surface of cannelure 26 is provided with kidney slot 24, the import of the outlet of entrance hole 212 and export mouth 222 is positioned at the same end face of sliding bearing 2, between the adjacent cooling hole 23 of entrance hole 212 and entrance hole 212, be communicated with by a kidney slot 24 respectively between the adjacent cooling hole 23 of leadout hole 222 and leadout hole 222 and between the two adjacent cooling holes 23, be equiped with sealing ring 25 in the cannelure 26, sealing ring 25 is with the opening sealing of kidney slot 24.
The course of work of the present utility model is: by offer cooling fluid input channel 31 on bearing block 3, cooling fluid is transported in the input hole of being offered on the sliding bearing 2 21, flow into adjacent by kidney slot 24 again with input hole 21, along in the axial arranged cooling hole 23 of sliding bearing 2, again in the set kidney slot of sliding bearing 2 another sides 24 flows into another cooling hole 23 adjacent with this cooling hole 23, according to this, cooling fluid is cooled off hole 23 along sliding bearing 2 axial reversing currents through each, sliding bearing 2 is cooled off, through discharging to the cooling fluid output channel 32 on the bearing block 3 with the delivery outlet 22 that is communicated with of cooling hole 23, the port of the input channel 31 on the bearing block 3 and the port of output channel 32 are by the circulating cooling system of the formation of the cooling system outside pipeline and the machine tool chief axis 1 main shaft bearing again for cooling fluid afterwards.The quantity in cooling hole 23 can be selected according to the size of caloric value and sliding bearing 2, and two groups or more input hole 21, delivery outlet 22 and cooling hole 23 can also be set on a sliding bearing 2 when needs.The utility model can be forced cooling to sliding bearing 2, good cooling results, in the allowed band of sliding bearing 2 temperature rises, can improve the rotating speed of machine tool chief axis 1 greatly, can make simultaneously machine tool chief axis 1 keep good rigidity, characteristic that rotating accuracy is high, realize machine tooling high speed, precise treatment; It is simple and reasonable, be convenient to processing, low cost of manufacture.
Claims (5)
1. the squirrel-cage cooling structure of a machine tool chief axis liquid sliding bearing, it is characterized in that it is input channel (31) and the output channel (32) that is provided with cooling fluid on bearing block (3), be provided with the input hole (21) of cooling fluid on the sliding bearing (2) of the supporting machine tool chief axis (1) in being placed in bearing block (3), delivery outlet (22) and at least one cooling hole (23), input hole (21) is made up of ingate (211) and entrance hole (212), ingate (211) is radial arrangement in sliding bearing (2), the one end entrance hole (212) axial arranged with being sliding bearing (2) is communicated with, the other end is communicated with input channel (31), described delivery outlet (22) is made up of outlet opening (221) and leadout hole (222), outlet opening (221) is radial arrangement in sliding bearing (2), the one end leadout hole (222) axial arranged with being sliding bearing (2) is communicated with, the other end is communicated with output channel (32), cooling hole (23) is for being sliding bearing (2) through hole axial arranged and that along the circumferential direction distribute, the both ends of the surface of sliding bearing (2) are provided with cannelure (26), the bottom surface of cannelure (26) is provided with kidney slot (24), between entrance hole (212) the cooling hole (23) adjacent with entrance hole (212), be communicated with by a kidney slot (24) respectively between leadout hole (222) the cooling hole (23) adjacent and between the adjacent cooling hole (23), be equiped with sealing ring (25) in the cannelure (26) with leadout hole (222).
2. according to the squirrel-cage cooling structure of the described machine tool chief axis liquid sliding bearing of claim 1, it is characterized in that described cooling hole (23) is even number, the import of the outlet of entrance hole (212) and export mouth (222) is positioned at the same end face of sliding bearing (2).
3. according to the squirrel-cage cooling structure of the described machine tool chief axis liquid sliding bearing of claim 1, it is characterized in that described cooling hole (23) is odd number, the outlet of entrance hole (212) is positioned at an end face of sliding bearing (2), and the import of export mouth (222) is positioned at the other end of sliding bearing (2).
4. according to the annular slot type cooling structure of claim 1 or 2 or 3 described machine tool chief axis liquid sliding bearings, it is characterized in that described input channel (31) is by inlet hole (311) with lead into hole (312) and form, inlet hole (311) is radially setting in bearing block (3), the one end is communicated with ingate (211), the other end is sealed by plug (33), leading into hole (312) is axial setting and is communicated with inlet hole (311) in bearing block (3), described output channel (32) is made up of tap (321) and guide hole (322), tap (321) is radially setting in bearing block (3), the one end is communicated with outlet opening (221), the other end is by plug (33) sealing, and guide hole (322) are axial setting and are communicated with tap (321) in bearing block (3).
5. according to the squirrel-cage cooling structure of the described machine tool chief axis liquid sliding bearing of claim 4, the outer wall that it is characterized in that described sliding bearing (2) is provided with the annular entry groove (213) that communicates with ingate (211), also be provided with the ring exit groove (223) that communicates with outlet opening (221), ingate (211) is communicated with inlet hole (311) by annular entry groove (213), and outlet opening (221) is communicated with tap (321) by ring exit groove (223).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200633902U CN201042766Y (en) | 2007-05-31 | 2007-05-31 | Rotor cage type cooling structure of machine tool principal axis liquid sliding surface bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200633902U CN201042766Y (en) | 2007-05-31 | 2007-05-31 | Rotor cage type cooling structure of machine tool principal axis liquid sliding surface bearing |
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| Publication Number | Publication Date |
|---|---|
| CN201042766Y true CN201042766Y (en) | 2008-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200633902U Expired - Fee Related CN201042766Y (en) | 2007-05-31 | 2007-05-31 | Rotor cage type cooling structure of machine tool principal axis liquid sliding surface bearing |
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| CN (1) | CN201042766Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101895170A (en) * | 2010-08-06 | 2010-11-24 | 湖南大学 | Electric main shaft with mouse cage type motor stator cooling structure |
| CN103302317A (en) * | 2013-06-17 | 2013-09-18 | 宜昌长机科技有限责任公司 | Self-lubrication cooled type gear shaper spindle structure |
| CN103753347A (en) * | 2013-09-26 | 2014-04-30 | 湖南特力液压有限公司 | Inner hole liquid removing device and inner hole machining device |
| CN113231884A (en) * | 2021-04-26 | 2021-08-10 | 广州市昊志机电股份有限公司 | Main shaft flange temperature regulation device, main shaft and machine tool |
| CN113700732A (en) * | 2021-08-25 | 2021-11-26 | 中国科学院工程热物理研究所 | Gas turbine rotor support system based on sliding bearing and thrust disc |
-
2007
- 2007-05-31 CN CNU2007200633902U patent/CN201042766Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101895170A (en) * | 2010-08-06 | 2010-11-24 | 湖南大学 | Electric main shaft with mouse cage type motor stator cooling structure |
| CN103302317A (en) * | 2013-06-17 | 2013-09-18 | 宜昌长机科技有限责任公司 | Self-lubrication cooled type gear shaper spindle structure |
| CN103302317B (en) * | 2013-06-17 | 2017-11-10 | 宜昌长机科技有限责任公司 | A kind of self-lubricate cooled main axis of gear shaper structure |
| CN103753347A (en) * | 2013-09-26 | 2014-04-30 | 湖南特力液压有限公司 | Inner hole liquid removing device and inner hole machining device |
| CN103753347B (en) * | 2013-09-26 | 2016-02-03 | 湖南特力液压有限公司 | Inner hole liquid removing device and inner hole machining device |
| CN113231884A (en) * | 2021-04-26 | 2021-08-10 | 广州市昊志机电股份有限公司 | Main shaft flange temperature regulation device, main shaft and machine tool |
| CN113700732A (en) * | 2021-08-25 | 2021-11-26 | 中国科学院工程热物理研究所 | Gas turbine rotor support system based on sliding bearing and thrust disc |
| CN113700732B (en) * | 2021-08-25 | 2023-09-05 | 中国科学院工程热物理研究所 | Gas turbine rotor supporting system based on sliding bearing and thrust disc |
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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 |