CN103498872B - A kind of oil outlet has dynamic and hydrostatic bearing and the assembly thereof of balancing main shaft function - Google Patents
A kind of oil outlet has dynamic and hydrostatic bearing and the assembly thereof of balancing main shaft function Download PDFInfo
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- CN103498872B CN103498872B CN201310444950.9A CN201310444950A CN103498872B CN 103498872 B CN103498872 B CN 103498872B CN 201310444950 A CN201310444950 A CN 201310444950A CN 103498872 B CN103498872 B CN 103498872B
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Abstract
A kind of oil outlet disclosed by the invention has dynamic and hydrostatic bearing and the assembly thereof of balancing main shaft function, wherein, have in the dynamic and hydrostatic bearing of balancing main shaft function in described oil outlet, Oil Guide cover is embedded with in first oil outlet described in each, oil guiding hole is provided with in described Oil Guide cover, described Oil Guide cover protrudes out in described bearing main body inner chamber from described first oil outlet, by this, the acting in conjunction of multiple described Oil Guide cover, to reduce the radial activity space of grinding wheel spindle further, in grinding wheel spindle rotary course, owing to there is circular runout, and cause grinding wheel spindle and each described Oil Guide overlap between distance not etc., the gap of mutual formation do not wait and the oil pressure formed each other not etc., the little oil pressure in gap is large, the large oil pressure in gap is little, and then, each oil pressure not of uniform size is jointly to grinding wheel spindle effect, make described grinding wheel spindle by the little movement large to gap in gap, thus, balance grinding wheel spindle, reduce circular runout.
Description
Technical field
The present invention relates to the structural member on a kind of grinding machine, be specifically related to dynamic and hydrostatic bearing and assembly thereof that a kind of oil outlet has balancing main shaft function.
Background technique
In the stability of high-precision grinder medium plain emery wheel main shaft, especially the stability of the radial direction of grinding wheel spindle is very large on grinding accuracy impact.At present, the bearing of grinding wheel spindle of grinder mainly selects hydraulic bearing, hydrostatic bearing or sound bearing, to promote the bearing capacity of bearing.So how under the prerequisite of bearing capacity taking into account bearing, reducing the circular runout of grinding wheel spindle further, is the important problem of the industry one.
Summary of the invention
For prior art Problems existing, the object of the present invention is to provide a kind of oil outlet to have dynamic and hydrostatic bearing and the assembly thereof of balancing main shaft function, wherein, this dynamic and hydrostatic bearing can balance grinding wheel spindle, reduces circular runout.
A kind of oil outlet provided by the invention has the dynamic and hydrostatic bearing of balancing main shaft function, it comprises bearing main body, wherein, the inwall of described bearing main body is arranged with active and static pressure oil pocket, described active and static pressure oil pocket comprises successively by the static-pressure oil chamber being deep to shallow setting, transition oil pocket and dynamic pressure oil pocket, described transition oil pocket connects described static-pressure oil chamber and described dynamic pressure oil pocket and arranges in involute, described bearing main body is provided with the first oil outlet being communicated with described active and static pressure oil pocket and arranging, Oil Guide cover is embedded with in first oil outlet described in each, oil guiding hole is provided with in described Oil Guide cover, described Oil Guide cover protrudes out in described bearing main body inner chamber from described first oil outlet, by this, the acting in conjunction of multiple described Oil Guide cover, to reduce the radial activity space of grinding wheel spindle further.
Further, the quantity of described static-pressure oil chamber is even number and in evenly laying, thus, and the uniform force of grinding wheel spindle and good stability;
Further, described first oil outlet is communicated with described static-pressure oil chamber and arranges, and the quantity of described first oil outlet is equal with the quantity of described static-pressure oil chamber, to ensure the stability of hydraulic system.
Based on disclosing of above technological scheme, the present invention possesses following beneficial effect:
A kind of oil outlet provided by the invention has the dynamic and hydrostatic bearing of balancing main shaft function, Oil Guide cover is embedded with in first oil outlet described in each, oil guiding hole is provided with in described Oil Guide cover, described Oil Guide cover protrudes out in described bearing main body inner chamber from described first oil outlet, by this, the acting in conjunction of multiple described Oil Guide cover, to reduce the radial activity space of grinding wheel spindle further, in grinding wheel spindle rotary course, owing to there is circular runout, and cause grinding wheel spindle and each described Oil Guide overlap between distance not etc., the gap of mutual formation do not wait and the oil pressure formed each other not etc., the little oil pressure in gap is large, the large oil pressure in gap is little, and then, each oil pressure not of uniform size is jointly to grinding wheel spindle effect, make described grinding wheel spindle by the little movement large to gap in gap, thus, balance grinding wheel spindle, reduce circular runout.
A kind of oil outlet that the present invention provides again has the dynamic and hydrostatic bearing assembly of balancing main shaft function, and it comprises oil outlet and has the dynamic and hydrostatic bearing of balancing main shaft function, bearing housing, adjusting nut and housing, wherein,
The dynamic and hydrostatic bearing that described oil outlet has balancing main shaft function comprises bearing main body, described bearing main body has internal face, outer wall, first end face and the second end face, wherein, the internal face of described bearing main body is arranged with active and static pressure oil pocket, described active and static pressure oil pocket comprises successively by the static-pressure oil chamber being deep to shallow setting, transition oil pocket and dynamic pressure oil pocket, described transition oil pocket connects described static-pressure oil chamber and described dynamic pressure oil pocket and arranges in involute, the outer wall of described bearing main body comprises near described first end face and the first attachment face arranged in cylndrical surface, the second attachment face arranged near described second end face and in cylndrical surface, and the 3rd attachment face arranged between described first attachment face and described second attachment face and in conical surface, from described first end towards described second end face direction, described 3rd attachment face is in gradually wide setting, one article of first annular shallow slot of two article of first ring type deep trough and connection two articles of described first ring type deep troughs is arranged with on the 3rd attachment face of described bearing main body, attachment hole is provided with in the bottom of described first annular shallow slot, described attachment hole is communicated with described active and static pressure oil pocket and arranges and described first annular shallow slot setting, the oil duct of described first ring type deep trough of connection two is axially provided with in further described bearing main body, the first oil inlet hole that the described oil duct of recessed connection is arranged on the second attachment face of described bearing main body, and be communicated with the first oil outlet of described active and static pressure oil pocket setting, Oil Guide cover is embedded with in first oil outlet described in each, oil guiding hole is provided with in described Oil Guide cover, described Oil Guide cover protrudes out in described bearing main body inner chamber from described first oil outlet, by this, the acting in conjunction of multiple described Oil Guide cover, to reduce the radial activity space of grinding wheel spindle further,
Described bearing housing is installed on described 3rd attachment face, the internal face of described bearing housing is that conical surface is arranged, with suitable with described 3rd attachment face, corresponding two described first ring type deep troughs of internal face of described bearing housing are arranged with two the second ring type deep troughs, and corresponding described first annular shallow slot is provided with the second annular shallow slot;
Described first attachment face is provided with outside thread and installs for described adjusting nut, and described adjusting nut and described bearing housing abut against in order to spacing described bearing housing;
Described housing is installed on the second attachment face of described bearing main body, and its corresponding described first oil inlet hole offers the second oil inlet hole, and corresponding described first oil outlet offers the second oil outlet.
Further, the quantity of described static-pressure oil chamber is even number and in evenly laying, thus, and the uniform force of grinding wheel spindle and good stability;
Further, described attachment hole is communicated with described static-pressure oil chamber and arranges, and the quantity of described attachment hole is equal with the quantity of described static-pressure oil chamber, to ensure the stability of hydraulic system;
Further, described first oil outlet is communicated with described static-pressure oil chamber and arranges, and the quantity of described first oil outlet is equal with the quantity of described static-pressure oil chamber, to ensure the stability of hydraulic system.
Based on disclosing of above technological scheme, the present invention possesses following beneficial effect:
Have in the dynamic and hydrostatic bearing assembly of balancing main shaft function in a kind of oil outlet provided by the invention, the internal face of described bearing main body is arranged with active and static pressure oil pocket, described active and static pressure oil pocket comprises successively by being deep to the static-pressure oil chamber of shallow setting, transition oil pocket and dynamic pressure oil pocket, and described transition oil pocket connects described static-pressure oil chamber and described dynamic pressure oil pocket and arranges in involute, the setting of described static-pressure oil chamber and described dynamic pressure oil pocket is to promote the bearing capacity that described oil outlet has the dynamic and hydrostatic bearing of balancing main shaft function, described transition oil pocket connects described static-pressure oil chamber and described dynamic pressure oil pocket is arranged, to make described static-pressure oil chamber and the smooth connection of described dynamic pressure oil pocket, in addition, described transition oil pocket is that involute is arranged, the characteristic of the flowing of hydraulic oil during to mate work, thus, promote dynamic pressure bearing capacity and rigidity that described oil outlet has the dynamic and hydrostatic bearing of balancing main shaft function, in addition, hydraulic oil enters described oil duct from by oil inlet hole (comprising the first oil inlet hole and described second oil inlet hole), then, described first annular shallow slot is entered from two described first ring type deep troughs, finally, described active and static pressure oil pocket is entered from described attachment hole, wherein, described first annular shallow slot plays the effect of flow controller, and by rationally arranging the degree of depth of described first annular shallow slot and described second annular shallow slot, to realize the restriction effect of expection, in addition, described bearing housing is spacing via described adjusting nut, and then, the position that described bearing can be placed on described 3rd attachment face by described adjusting nut is finely tuned, and then, a fine setting is among a small circle carried out to the gap between described first annular shallow slot and described second annular shallow slot, and realize the fine setting of restriction effect, in addition, Oil Guide cover is embedded with in first oil outlet described in each, oil guiding hole is provided with in described Oil Guide cover, described Oil Guide cover protrudes out in described bearing main body inner chamber from described first oil outlet, by this, the acting in conjunction of multiple described Oil Guide cover, to reduce the radial activity space of grinding wheel spindle further, in grinding wheel spindle rotary course, owing to there is circular runout, and cause grinding wheel spindle and each described Oil Guide overlap between distance not etc., thus, the gap of mutual formation do not wait and the oil pressure formed each other not etc., the little oil pressure in gap is large, the large oil pressure in gap is little, and then, each oil pressure not of uniform size is jointly to grinding wheel spindle effect, make described grinding wheel spindle by the little movement large to gap in gap, thus, balance grinding wheel spindle, reduce circular runout.
Accompanying drawing explanation
Fig. 1 is the generalized section that a kind of oil outlet provided by the invention has the dynamic and hydrostatic bearing assembly of balancing main shaft function;
Fig. 2 is the cross-sectional schematic of dynamic and hydrostatic bearing along A-A face in Fig. 1 that a kind of oil outlet provided by the invention has balancing main shaft function;
Fig. 3 is the cross-sectional schematic of dynamic and hydrostatic bearing along B-B face in Fig. 1 that a kind of oil outlet provided by the invention has balancing main shaft function;
Fig. 4 is that schematic diagram is cutd open in the rotation that a kind of oil outlet provided by the invention has a dynamic and hydrostatic bearing assembly of balancing main shaft function.
Drawing reference numeral explanation
Oil outlet has the dynamic and hydrostatic bearing assembly 100 of balancing main shaft function
Oil outlet has the dynamic and hydrostatic bearing 1 of balancing main shaft function
Bearing main body 10
Static-pressure oil chamber 11
Transition oil pocket 12
Dynamic pressure oil pocket 13
First ring type deep trough 14
First annular shallow slot 15
Attachment hole 16
Oil duct 17
First oil inlet hole 18
First oil outlet 19
Oil Guide cover 191
Bearing housing 2
Second ring type deep trough 21
Second annular shallow slot 22
Adjusting nut 3
Housing 4
Second oil inlet hole 41
Second oil outlet 42
Grinding wheel spindle 200
Embodiment
Technological scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing:
Refer to Fig. 1 to Fig. 4, a kind of oil outlet that the present invention provides again has the dynamic and hydrostatic bearing assembly 100 of balancing main shaft function, in order to carry grinding wheel spindle 200, it comprises the dynamic and hydrostatic bearing 1 that oil outlet has balancing main shaft function, bearing housing 2, adjusting nut 3 and housing 4, wherein, the dynamic and hydrostatic bearing 1 that described oil outlet has balancing main shaft function comprises bearing main body 10, described bearing main body 10 has internal face (non-label), outer wall (non-label), first end face (non-label) and the second end face (non-label), wherein, the internal face of described bearing main body 10 is arranged with active and static pressure oil pocket (non-label), described active and static pressure oil pocket comprises successively by the static-pressure oil chamber 11 being deep to shallow setting, transition oil pocket 12 and dynamic pressure oil pocket 13, described transition oil pocket 12 connects described static-pressure oil chamber 11 and described dynamic pressure oil pocket 13 and arranges in involute, the outer wall of described bearing main body 10 comprises near described first end face and the first attachment face (non-label) arranged in cylndrical surface, the second attachment face (non-label) arranged near described second end face and in cylndrical surface, and the 3rd attachment face (non-label) arranged between described first attachment face and described second attachment face and in conical surface, from described first end towards described second end face direction, described 3rd attachment face is in gradually wide setting, one article of first annular shallow slot 15 of two article of first ring type deep trough 14 and connection two articles of described first ring type deep troughs 14 is arranged with on the 3rd attachment face of described bearing main body 10, attachment hole 16 is provided with in the bottom of described first annular shallow slot 15, described attachment hole 16 is communicated with the setting of described active and static pressure oil pocket and described first annular shallow slot 15 is arranged, the oil duct 17 of described first ring type deep trough 14 of connection two is axially provided with in further described bearing main body 10, the first oil inlet hole 18 that the described oil duct 17 of recessed connection is arranged on the second attachment face of described bearing main body 10, and be communicated with the first oil outlet 19 of described active and static pressure oil pocket setting, Oil Guide cover 191 is embedded with in first oil outlet 19 described in each, oil guiding hole (non-label) is provided with in described Oil Guide cover 191, described Oil Guide cover 191 protrudes out in described bearing main body 10 inner chamber from described first oil outlet 19, by this, multiple described Oil Guide overlaps 191 actings in conjunction, to reduce the radial activity space of grinding wheel spindle 200 further.
Refer to Fig. 1 and Fig. 4, described bearing housing 2 is installed on described 3rd attachment face, the internal face of described bearing housing 2 is that conical surface is arranged, with suitable with described 3rd attachment face, corresponding two described first ring type deep troughs 14 of internal face of described bearing housing 2 are arranged with two the second ring type deep troughs 21, and corresponding described first annular shallow slot 15 is provided with the second annular shallow slot 22.
Refer to Fig. 1 and Fig. 4, described first attachment face is provided with outside thread and installs for described adjusting nut 3, and described adjusting nut 3 abuts against in order to spacing described bearing housing 2 with described bearing housing 2.
Refer to Fig. 1 and Fig. 4, described housing 4 is installed on the second attachment face of described bearing main body 10, and its corresponding described first oil inlet hole 18 offers the second oil inlet hole 41, and corresponding described first oil outlet 19 offers the second oil outlet 42.
Refer to Fig. 1 to Fig. 4, the quantity of described static-pressure oil chamber 11 is even number and lays in even, thus, the uniform force of grinding wheel spindle 200 and good stability, described attachment hole 16 is communicated with described static-pressure oil chamber 11 with described first oil outlet 19 and arranges, the quantity of described attachment hole 16 is equal with the quantity of described static-pressure oil chamber 11 with the quantity of described first oil outlet 19, to ensure the stability of hydraulic system, and in the present embodiment, the quantity of described attachment hole 16 and the described quantity of the first oil outlet 19 and the quantity of described static-pressure oil chamber 11 are four.
Based on disclosing of above technological scheme, the present invention possesses following beneficial effect:
Have in the dynamic and hydrostatic bearing assembly 100 of balancing main shaft function in a kind of oil outlet provided by the invention, the internal face of described bearing main body 10 is arranged with active and static pressure oil pocket, described active and static pressure oil pocket comprises successively by being deep to the static-pressure oil chamber 11 of shallow setting, transition oil pocket 12 and dynamic pressure oil pocket 13, and described transition oil pocket 12 connects described static-pressure oil chamber 11 and described dynamic pressure oil pocket 13 and arranges in involute, the setting of described static-pressure oil chamber 11 and described dynamic pressure oil pocket 13 is to promote the bearing capacity that described oil outlet has the dynamic and hydrostatic bearing 1 of balancing main shaft function, described transition oil pocket 12 connects described static-pressure oil chamber 11 and described dynamic pressure oil pocket 13 is arranged, to make described static-pressure oil chamber 11 and the smooth connection of described dynamic pressure oil pocket 13, in addition, described transition oil pocket 12 is arranged in involute, the flow characteristic of hydraulic oil during to mate work, thus, promote dynamic pressure bearing capacity and rigidity that described oil outlet has the dynamic and hydrostatic bearing 1 of balancing main shaft function, in addition, hydraulic oil enters described oil duct 17 from by oil inlet hole (comprising the first oil inlet hole 18 and described second oil inlet hole 41), then, described first annular shallow slot 15 is entered from two described first ring type deep troughs 14, finally, described active and static pressure oil pocket is entered from described attachment hole 16, wherein, described first annular shallow slot 15 plays the effect of flow controller, and by rationally arranging the degree of depth of described first annular shallow slot 15 and described second annular shallow slot 22, to realize the restriction effect of expection, in addition, described bearing housing 2 is spacing via described adjusting nut 3, and then, the position of described bearing housing 2 on described 3rd attachment face can be finely tuned by described adjusting nut 3, and then, a fine setting is among a small circle carried out to the gap between described first annular shallow slot 15 and described second annular shallow slot 22, and realize effect of the fine setting of restriction effect, in addition, Oil Guide cover 191 is embedded with in first oil outlet 19 described in each, oil guiding hole is provided with in described Oil Guide cover 191, described Oil Guide cover 191 protrudes out in described bearing main body 10 inner chamber from described first oil outlet 19, by this, multiple described Oil Guide overlaps 191 actings in conjunction, to reduce the radial activity space of grinding wheel spindle 200 further, in grinding wheel spindle 200 rotary course, owing to there is circular runout, and cause grinding wheel spindle 200 and each described Oil Guide not to overlap distance between 191 not etc., thus, the gap of mutual formation do not wait and the oil pressure formed each other not etc., the little oil pressure in gap is large, the large oil pressure in gap is little, and then, each oil pressure not of uniform size acts on grinding wheel spindle 200 jointly, make described grinding wheel spindle 200 by the little movement large to gap in gap, thus, balance grinding wheel spindle 200, reduce circular runout.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious realization of the present invention is not subject to the restrictions described above; as long as have employed the various improvement that method of the present invention is conceived and technological scheme is carried out; or design of the present invention and technological scheme directly applied to other occasion, all in protection scope of the present invention without to improve.
Claims (7)
1. an oil outlet has the dynamic and hydrostatic bearing of balancing main shaft function, it is characterized in that, it comprises bearing main body, described bearing main body has internal face, outer wall, first end face and the second end face, wherein, the inwall of described bearing main body is arranged with active and static pressure oil pocket, described active and static pressure oil pocket comprises successively by the static-pressure oil chamber being deep to shallow setting, transition oil pocket and dynamic pressure oil pocket, described transition oil pocket connects described static-pressure oil chamber and described dynamic pressure oil pocket and arranges in involute, the outer wall of described bearing main body comprises near described first end face and the first attachment face arranged in cylndrical surface, the second attachment face arranged near described second end face and in cylndrical surface, and the 3rd attachment face arranged between described first attachment face and described second attachment face and in conical surface, from described first end towards described second end face direction, described 3rd attachment face is in gradually wide setting, one article of first annular shallow slot of two article of first ring type deep trough and connection two articles of described first ring type deep troughs is arranged with on the 3rd attachment face of described bearing main body, attachment hole is provided with in the bottom of described first annular shallow slot, described attachment hole is communicated with described active and static pressure oil pocket and arranges and described first annular shallow slot setting, the oil duct of described first ring type deep trough of connection two is axially provided with in further described bearing main body, the first oil inlet hole that the described oil duct of recessed connection is arranged on the second attachment face of described bearing main body, and be communicated with the first oil outlet of described active and static pressure oil pocket setting, Oil Guide cover is embedded with in first oil outlet described in each, oil guiding hole is provided with in described Oil Guide cover, described Oil Guide cover protrudes out in described bearing main body inner chamber from described first oil outlet, by this, the acting in conjunction of multiple described Oil Guide cover, to reduce the radial activity space of grinding wheel spindle further.
2. oil outlet according to claim 1 has the dynamic and hydrostatic bearing of balancing main shaft function, it is characterized in that, the quantity of described static-pressure oil chamber is even number and lays in even.
3. oil outlet according to claim 1 has the dynamic and hydrostatic bearing of balancing main shaft function, it is characterized in that, described first oil outlet is communicated with described static-pressure oil chamber and arranges, and the quantity of described first oil outlet is equal with the quantity of described static-pressure oil chamber.
4. oil outlet has a dynamic and hydrostatic bearing assembly for balancing main shaft function, it is characterized in that, it comprises oil outlet and has the dynamic and hydrostatic bearing of balancing main shaft function, bearing housing, adjusting nut and housing, wherein,
The dynamic and hydrostatic bearing that described oil outlet has balancing main shaft function comprises bearing main body, described bearing main body has internal face, outer wall, first end face and the second end face, wherein, the internal face of described bearing main body is arranged with active and static pressure oil pocket, described active and static pressure oil pocket comprises successively by the static-pressure oil chamber being deep to shallow setting, transition oil pocket and dynamic pressure oil pocket, described transition oil pocket connects described static-pressure oil chamber and described dynamic pressure oil pocket and arranges in involute, the outer wall of described bearing main body comprises near described first end face and the first attachment face arranged in cylndrical surface, the second attachment face arranged near described second end face and in cylndrical surface, and the 3rd attachment face arranged between described first attachment face and described second attachment face and in conical surface, from described first end towards described second end face direction, described 3rd attachment face is in gradually wide setting, one article of first annular shallow slot of two article of first ring type deep trough and connection two articles of described first ring type deep troughs is arranged with on the 3rd attachment face of described bearing main body, attachment hole is provided with in the bottom of described first annular shallow slot, described attachment hole is communicated with described active and static pressure oil pocket and arranges and described first annular shallow slot setting, the oil duct of described first ring type deep trough of connection two is axially provided with in further described bearing main body, the first oil inlet hole that the described oil duct of recessed connection is arranged on the second attachment face of described bearing main body, and be communicated with the first oil outlet of described active and static pressure oil pocket setting, Oil Guide cover is embedded with in first oil outlet described in each, oil guiding hole is provided with in described Oil Guide cover, described Oil Guide cover protrudes out in described bearing main body inner chamber from described first oil outlet, by this, the acting in conjunction of multiple described Oil Guide cover, to reduce the radial activity space of grinding wheel spindle further,
Described bearing housing is installed on described 3rd attachment face, the internal face of described bearing housing is that conical surface is arranged, with suitable with described 3rd attachment face, corresponding two described first ring type deep troughs of internal face of described bearing housing are arranged with two the second ring type deep troughs, and corresponding described first annular shallow slot is provided with the second annular shallow slot;
Described first attachment face is provided with outside thread and installs for described adjusting nut, and described adjusting nut and described bearing housing abut against in order to spacing described bearing housing;
Described housing is installed on the second attachment face of described bearing main body, and its corresponding described first oil inlet hole offers the second oil inlet hole, and corresponding described first oil outlet offers the second oil outlet.
5. oil outlet according to claim 4 has the dynamic and hydrostatic bearing assembly of balancing main shaft function, it is characterized in that, the quantity of described static-pressure oil chamber is even number and lays in even.
6. oil outlet according to claim 5 has the dynamic and hydrostatic bearing assembly of balancing main shaft function, it is characterized in that, described attachment hole is communicated with described static-pressure oil chamber and arranges, and the quantity of described attachment hole is equal with the quantity of described static-pressure oil chamber.
7. oil outlet according to claim 5 has the dynamic and hydrostatic bearing assembly of balancing main shaft function, it is characterized in that, described first oil outlet is communicated with described static-pressure oil chamber and arranges, and the quantity of described first oil outlet is equal with the quantity of described static-pressure oil chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310444950.9A CN103498872B (en) | 2013-09-23 | 2013-09-23 | A kind of oil outlet has dynamic and hydrostatic bearing and the assembly thereof of balancing main shaft function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310444950.9A CN103498872B (en) | 2013-09-23 | 2013-09-23 | A kind of oil outlet has dynamic and hydrostatic bearing and the assembly thereof of balancing main shaft function |
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| CN103498872A CN103498872A (en) | 2014-01-08 |
| CN103498872B true CN103498872B (en) | 2016-01-06 |
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| CN104061245A (en) * | 2014-05-09 | 2014-09-24 | 安徽安风风机有限公司 | Rolling bearing axial follower of main shaft |
| CN110159663B (en) * | 2019-06-24 | 2024-03-19 | 芜湖恒升重型机床股份有限公司 | Bearing play pre-tightening method and bearing structure |
| CN114799238B (en) * | 2022-06-28 | 2022-09-23 | 中国机械总院集团云南分院有限公司 | High-bearing large dynamic horizontal dynamic and static pressure main shaft system |
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| JP2001027224A (en) * | 1999-07-15 | 2001-01-30 | Ntn Corp | Dynamic pressure gas bearing |
| CN2719455Y (en) * | 2004-09-03 | 2005-08-24 | 湖南同心科技有限公司 | High-speed electric main spindle of hydrostatic-hydrodynamic bearing |
| CN2765372Y (en) * | 2004-12-08 | 2006-03-15 | 湖南同心科技有限公司 | Dynamic/static pressure bearing electric main shaft |
| JP2008008367A (en) * | 2006-06-28 | 2008-01-17 | Ntn Corp | Dynamic pressure bearing device |
| CN100417829C (en) * | 2006-09-19 | 2008-09-10 | 潘旭华 | Static-pressure bearing rotation shaft roundness regulating method and apparatus thereof |
| CN203176167U (en) * | 2013-04-12 | 2013-09-04 | 胡惜时 | Hybrid bearing |
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