CN103498872A - Hybrid bearing of which oil outlets having function of balancing main shaft and components thereof - Google Patents
Hybrid bearing of which oil outlets having function of balancing main shaft and components thereof Download PDFInfo
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- CN103498872A CN103498872A CN201310444950.9A CN201310444950A CN103498872A CN 103498872 A CN103498872 A CN 103498872A CN 201310444950 A CN201310444950 A CN 201310444950A CN 103498872 A CN103498872 A CN 103498872A
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Abstract
The invention discloses a hybrid bearing of which oil outlets having function of balancing a main shaft and components thereof. In the hybrid bearing, an oil guide sleeve is embedded in each first oil outlet, an oil guide hole is formed in each oil guide sleeve, and the oil guide sleeve extends into a bearing main body inner cavity from the first oil outlet in a protrusion mode, therefore, by virtue of the combined action of a plurality of oil guide sleeves, the radial activity space of a grinding wheel main shaft is further reduced, and during rotation of the grinding wheel main shaft, as radial run-out exists, the distances between the grinding wheel main shaft and the oil guide sleeves are unequal, gaps formed between the grinding wheel main shaft and the oil guide sleeves are unequal, and oil pressures formed between the grinding wheel main shaft and the oil guide sleeves are unequal; the oil pressure is high while the gap is small, the oil pressure is low while the gap is large, and thus different oil pressures act on the grinding wheel main shaft together jointly, so that the grinding wheel main shaft is moved from small gaps to large gaps, the grinding wheel main shaft is balanced, and the radial run-out is reduced.
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 the balancing main shaft function.
Background technique
In the stability of high-precision grinder medium plain emery wheel main shaft, especially the stability radially of grinding wheel spindle is very large on the grinding accuracy impact.At present, the bearing of grinding wheel spindle of grinder is mainly selected hydraulic bearing, hydrostatic bearing or sound bearing, to promote the bearing capacity of bearing.So, how, under the prerequisite of the bearing capacity of taking into account bearing, further reduce the circular runout of grinding wheel spindle, be important problem of the industry.
Summary of the invention
The problem existed for prior art, the dynamic and hydrostatic bearing and the assembly thereof that the object of the present invention is to provide a kind of oil outlet to there is the balancing main shaft function, wherein, this dynamic and hydrostatic bearing can the 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 concaved with the active and static pressure oil pocket, described active and static pressure oil pocket comprises successively by the static-pressure oil chamber that is 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 is the involute setting, described bearing main body is provided with and is communicated with the first oil outlet that described active and static pressure oil pocket arranges, be embedded with the Oil Guide cover in each described first oil outlet, be provided with oil guiding hole in described Oil Guide cover, described Oil Guide cover protrudes out in described bearing main body inner chamber from described the first oil outlet, by this, the acting in conjunction of a plurality of described Oil Guide cover, further to reduce the radially activity space of grinding wheel spindle.
Further, the quantity of described static-pressure oil chamber is even number and is even laying, thereby, grinding wheel spindle stressed evenly and good stability;
Further, described the first oil outlet is communicated with described static-pressure oil chamber setting, and the quantity of described the first oil outlet equates with the quantity of described static-pressure oil chamber, to guarantee 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, be embedded with the Oil Guide cover in each described first oil outlet, be provided with oil guiding hole in described Oil Guide cover, described Oil Guide cover protrudes out in described bearing main body inner chamber from described the first oil outlet, by this, the acting in conjunction of a plurality of described Oil Guide cover, further to reduce the radially activity space of grinding wheel spindle, in the grinding wheel spindle rotary course, owing to there being circular runout, and cause the distance between grinding wheel spindle and each described Oil Guide cover not wait, does not wait in the gap formed each other and the oil pressure of formation does not each other wait, 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 the grinding wheel spindle effect, make described grinding wheel spindle by the large movement in little Xiang gap, gap, thereby, the 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 that oil outlet 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 the balancing main shaft function comprises bearing main body, described bearing main body has internal face, outer wall, the first end face and the second end face, wherein, the internal face of described bearing main body is concaved with the active and static pressure oil pocket, described active and static pressure oil pocket comprises successively by the static-pressure oil chamber that is 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 is the involute setting, the outer wall of described bearing main body comprises near described the first end face and is the first attachment face that cylndrical surface arranges, near described the second end face and be the second attachment face that cylndrical surface arranges, and between described the first attachment face and described the second attachment face and be the 3rd attachment face that conical surface arranges, from described first end towards described the second end face direction, described the 3rd attachment face is gradually wide setting, be concaved with two the first ring type deep troughs and be communicated with first annular shallow slot of two described the first ring type deep troughs on the 3rd attachment face of described bearing main body, bottom in described the first annular shallow slot is provided with attachment hole, described attachment hole is communicated with described active and static pressure oil pocket and arranges and described the first annular shallow slot setting, further described bearing main body is interior along being axially arranged with the oil duct that is communicated with two described the first ring type deep troughs, be arranged with on the second attachment face of described bearing main body and be communicated with the first oil inlet hole that described oil duct arranges, and the first oil outlet that is communicated with described active and static pressure oil pocket setting, be embedded with the Oil Guide cover in each described first oil outlet, be provided with oil guiding hole in described Oil Guide cover, described Oil Guide cover protrudes out in described bearing main body inner chamber from described the first oil outlet, by this, the acting in conjunction of a plurality of described Oil Guide cover, further to reduce the radially activity space of grinding wheel spindle,
Described bearing housing is installed on described the 3rd attachment face, the internal face of described bearing housing is the conical surface setting, with suitable with described the 3rd attachment face, corresponding two described the first ring type deep troughs of the internal face of described bearing housing are concaved with two the second ring type deep troughs, and corresponding described the first annular shallow slot is provided with the second annular shallow slot;
Described the first attachment face is provided with outside thread and installs for described adjusting nut, and described adjusting nut and described bearing housing connect 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 the first oil outlet offers the second oil outlet.
Further, the quantity of described static-pressure oil chamber is even number and is even laying, thereby, grinding wheel spindle stressed evenly and good stability;
Further, described attachment hole is communicated with described static-pressure oil chamber setting, and the quantity of described attachment hole equates with the quantity of described static-pressure oil chamber, to guarantee the stability of hydraulic system;
Further, described the first oil outlet is communicated with described static-pressure oil chamber setting, and the quantity of described the first oil outlet equates with the quantity of described static-pressure oil chamber, to guarantee the stability of hydraulic system.
Based on disclosing of above technological scheme, the present invention possesses following beneficial effect:
In a kind of oil outlet provided by the invention, have in the dynamic and hydrostatic bearing assembly of balancing main shaft function, the internal face of described bearing main body is concaved with the active and static pressure oil pocket, described active and static pressure oil pocket comprises that successively, by the static-pressure oil chamber that is 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 is the involute setting, the setting of described static-pressure oil chamber and described dynamic pressure oil pocket has the bearing capacity of the dynamic and hydrostatic bearing of balancing main shaft function to promote described oil outlet, described transition oil pocket connects described static-pressure oil chamber and the setting of described dynamic pressure oil pocket, so that described static-pressure oil chamber and the smooth connection of described dynamic pressure oil pocket, in addition, described transition oil pocket is the involute setting, the characteristic flowed of hydraulic oil during with coupling work, thereby, 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 is from by oil inlet hole (comprising the first oil inlet hole and described the second oil inlet hole), entering described oil duct, then, enter described the first annular shallow slot from two described the first ring type deep troughs, finally, enter described active and static pressure oil pocket from described attachment hole, wherein, described the first annular shallow slot plays the effect of flow controller, and by the degree of depth of described the first annular shallow slot and described the second annular shallow slot rationally is set, to realize the restriction effect of expection, in addition, described bearing housing is spacing via described adjusting nut, and then, the position that can described bearing is placed on described the 3rd attachment face by described adjusting nut is finely tuned, and then, a fine setting is among a small circle carried out in gap between described the first annular shallow slot and described the second annular shallow slot, and realize the fine setting of restriction effect, in addition, be embedded with the Oil Guide cover in each described first oil outlet, be provided with oil guiding hole in described Oil Guide cover, described Oil Guide cover protrudes out in described bearing main body inner chamber from described the first oil outlet, by this, the acting in conjunction of a plurality of described Oil Guide cover, further to reduce the radially activity space of grinding wheel spindle, in the grinding wheel spindle rotary course, owing to there being circular runout, and cause the distance between grinding wheel spindle and each described Oil Guide cover not wait, thereby, does not wait in the gap formed each other and the oil pressure of formation does not each other wait, 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 the grinding wheel spindle effect, make described grinding wheel spindle by the large movement in little Xiang gap, gap, thereby, the balance grinding wheel spindle, reduce circular runout.
The 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 dynamic and hydrostatic bearing of a kind of oil outlet provided by the invention with balancing main shaft function along the cross-sectional schematic of A-A face in Fig. 1;
Fig. 3 is the dynamic and hydrostatic bearing of a kind of oil outlet provided by the invention with balancing main shaft function along the cross-sectional schematic of B-B face in Fig. 1;
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.
The 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
Dynamic pressure oil pocket 13
The first ring type deep trough 14
The first annular shallow slot 15
The first oil inlet hole 18
The first oil outlet 19
Bearing housing 2
The second ring type deep trough 21
The second annular shallow slot 22
Adjusting nut 3
Housing 4
The second oil inlet hole 41
The second oil outlet 42
Grinding wheel spindle 200
Embodiment
Further illustrate technological scheme of the present invention below in conjunction with accompanying drawing and by embodiment:
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 that oil outlet has the dynamic and hydrostatic bearing 1 of 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 the balancing main shaft function comprises bearing main body 10, described bearing main body 10 has internal face (not label), outer wall (not label), the first end face (not label) and the second end face (not label), wherein, the internal face of described bearing main body 10 is concaved with active and static pressure oil pocket (not label), described active and static pressure oil pocket comprises successively by the static-pressure oil chamber 11 that is 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 is the involute setting, the outer wall of described bearing main body 10 comprises near described the first end face and is the first attachment face (not label) that cylndrical surface arranges, near described the second end face and be the second attachment face (not label) that cylndrical surface arranges, and between described the first attachment face and described the second attachment face and be the 3rd attachment face (not label) that conical surface arranges, from described first end towards described the second end face direction, described the 3rd attachment face is gradually wide setting, be concaved with two the first ring type deep troughs 14 and be communicated with first annular shallow slot 15 of two described the first ring type deep troughs 14 on the 3rd attachment face of described bearing main body 10, be provided with attachment hole 16 in the bottom of described the first annular shallow slot 15, described attachment hole 16 is communicated with described active and static pressure oil pocket setting and described the first annular shallow slot 15 arranges, further described bearing main body 10 is interior along being axially arranged with the oil duct 17 that is communicated with two described the first ring type deep troughs 14, be arranged with on the second attachment face of described bearing main body 10 and be communicated with the first oil inlet hole 18 that described oil duct 17 arranges, and the first oil outlet 19 that is communicated with described active and static pressure oil pocket setting, be embedded with Oil Guide cover 191 in each described first oil outlet 19, be provided with oil guiding hole (not label) in described Oil Guide cover 191, described Oil Guide cover 191 protrudes out in described bearing main body 10 inner chambers from described the first oil outlet 19, by this, a plurality of described Oil Guides overlap 191 actings in conjunction, further to reduce the radially activity space of grinding wheel spindle 200.
Refer to Fig. 1 and Fig. 4, described bearing housing 2 is installed on described the 3rd attachment face, the internal face of described bearing housing 2 is the conical surface setting, with suitable with described the 3rd attachment face, corresponding two described the first ring type deep troughs 14 of the internal face of described bearing housing 2 are concaved with two the second ring type deep troughs 21, and corresponding described the first annular shallow slot 15 is provided with the second annular shallow slot 22.
Refer to Fig. 1 and Fig. 4, described the first attachment face is provided with outside thread and installs for described adjusting nut 3, and described adjusting nut 3 connects 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 the 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 is even laying, thereby, grinding wheel spindle 200 stressed evenly and good stability, described attachment hole 16 and described the first oil outlet 19 are communicated with described static-pressure oil chamber 11 and arrange, the quantity of the quantity of described attachment hole 16 and described the first oil outlet 19 equates with the quantity of described static-pressure oil chamber 11, to guarantee the stability of hydraulic system, and, in the present embodiment, the quantity of the quantity of described attachment hole 16 and described 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:
In a kind of oil outlet provided by the invention, have in the dynamic and hydrostatic bearing assembly 100 of balancing main shaft function, the internal face of described bearing main body 10 is concaved with the active and static pressure oil pocket, described active and static pressure oil pocket comprises successively by the static-pressure oil chamber 11 that is deep to 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 pockets 13 and is the involute setting, the setting of described static-pressure oil chamber 11 and described dynamic pressure oil pocket 13 has the bearing capacity of the dynamic and hydrostatic bearing 1 of balancing main shaft function to promote described oil outlet, described transition oil pocket 12 connects described static-pressure oil chamber 11 and described dynamic pressure oil pocket 13 arranges, so that described static-pressure oil chamber 11 and described dynamic pressure oil pocket 13 smooth connections, in addition, described transition oil pocket 12 is the involute setting, the flow characteristic of hydraulic oil during with coupling work, thereby, 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 is from by oil inlet hole (comprising the first oil inlet hole 18 and described the second oil inlet hole 41), entering described oil duct 17, then, enter described the first annular shallow slot 15 from two described the first ring type deep troughs 14, finally, enter described active and static pressure oil pocket from described attachment hole 16, wherein, described the first annular shallow slot 15 plays the effect of flow controller, and by the degree of depth of described the first annular shallow slot 15 and described the second annular shallow slot 22 rationally is set, to realize the restriction effect of expection, in addition, described bearing housing 2 is spacing via described adjusting nut 3, and then, can the position of described bearing housing 2 on described the 3rd attachment face be finely tuned by described adjusting nut 3, and then, a fine setting is among a small circle carried out in gap to 22 of described the first annular shallow slot 15 and described the second annular shallow slots, and realize the effect of the fine setting of restriction effect, in addition, be embedded with Oil Guide cover 191 in each described first oil outlet 19, be provided with oil guiding hole in described Oil Guide cover 191, described Oil Guide cover 191 protrudes out in described bearing main body 10 inner chambers from described the first oil outlet 19, by this, a plurality of described Oil Guides overlap 191 actings in conjunction, further to reduce the radially activity space of grinding wheel spindle 200, in grinding wheel spindle 200 rotary courses, owing to there being circular runout, and cause the distance between grinding wheel spindle 200 and each described Oil Guide cover 191 not wait, thereby, does not wait in the gap formed each other and the oil pressure of formation does not each other wait, 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 200 effects, make described grinding wheel spindle 200 by the large movement in little Xiang gap, gap, thereby, balance grinding wheel spindle 200, reduce circular runout.
The above has carried out exemplary description to the present invention by reference to the accompanying drawings; obvious realization of the present invention is not subject to the restrictions described above; as long as the various improvement that adopted method design of the present invention and technological scheme to carry out; or without improving, design of the present invention and technological scheme are directly applied to other occasion, all in protection scope of the present invention.
Claims (7)
1. the dynamic and hydrostatic bearing that oil outlet has the balancing main shaft function, it is characterized in that, it comprises bearing main body, wherein, the inwall of described bearing main body is concaved with the active and static pressure oil pocket, described active and static pressure oil pocket comprises successively by the static-pressure oil chamber that is 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 is the involute setting, described bearing main body is provided with and is communicated with the first oil outlet that described active and static pressure oil pocket arranges, be embedded with the Oil Guide cover in each described first oil outlet, be provided with oil guiding hole in described Oil Guide cover, described Oil Guide cover protrudes out in described bearing main body inner chamber from described the first oil outlet, by this, the acting in conjunction of a plurality of described Oil Guide cover, further to reduce the radially activity space of grinding wheel spindle.
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 is even laying.
3. oil outlet according to claim 1 has the dynamic and hydrostatic bearing of balancing main shaft function, it is characterized in that, described the first oil outlet is communicated with described static-pressure oil chamber setting, and the quantity of described the first oil outlet equates with the quantity of described static-pressure oil chamber.
4. the dynamic and hydrostatic bearing assembly that oil outlet has the balancing main shaft function, is characterized in that, it comprises that oil outlet 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 the balancing main shaft function comprises bearing main body, described bearing main body has internal face, outer wall, the first end face and the second end face, wherein, the internal face of described bearing main body is concaved with the active and static pressure oil pocket, described active and static pressure oil pocket comprises successively by the static-pressure oil chamber that is 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 is the involute setting, the outer wall of described bearing main body comprises near described the first end face and is the first attachment face that cylndrical surface arranges, near described the second end face and be the second attachment face that cylndrical surface arranges, and between described the first attachment face and described the second attachment face and be the 3rd attachment face that conical surface arranges, from described first end towards described the second end face direction, described the 3rd attachment face is gradually wide setting, be concaved with two the first ring type deep troughs and be communicated with first annular shallow slot of two described the first ring type deep troughs on the 3rd attachment face of described bearing main body, bottom in described the first annular shallow slot is provided with attachment hole, described attachment hole is communicated with described active and static pressure oil pocket and arranges and described the first annular shallow slot setting, further described bearing main body is interior along being axially arranged with the oil duct that is communicated with two described the first ring type deep troughs, be arranged with on the second attachment face of described bearing main body and be communicated with the first oil inlet hole that described oil duct arranges, and the first oil outlet that is communicated with described active and static pressure oil pocket setting, be embedded with the Oil Guide cover in each described first oil outlet, be provided with oil guiding hole in described Oil Guide cover, described Oil Guide cover protrudes out in described bearing main body inner chamber from described the first oil outlet, by this, the acting in conjunction of a plurality of described Oil Guide cover, further to reduce the radially activity space of grinding wheel spindle,
Described bearing housing is installed on described the 3rd attachment face, the internal face of described bearing housing is the conical surface setting, with suitable with described the 3rd attachment face, corresponding two described the first ring type deep troughs of the internal face of described bearing housing are concaved with two the second ring type deep troughs, and corresponding described the first annular shallow slot is provided with the second annular shallow slot;
Described the first attachment face is provided with outside thread and installs for described adjusting nut, and described adjusting nut and described bearing housing connect 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 the 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 is even laying.
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 setting, and the quantity of described attachment hole equates 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 the first oil outlet is communicated with described static-pressure oil chamber setting, and the quantity of described the first oil outlet equates with the quantity of described static-pressure oil chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN103498872A true CN103498872A (en) | 2014-01-08 |
| CN103498872B CN103498872B (en) | 2016-01-06 |
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| CN201310444950.9A Active 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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Cited By (3)
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| CN104819216A (en) * | 2014-05-09 | 2015-08-05 | 安徽安风风机有限公司 | Supporting device for axial movement of rotating shaft |
| CN110159663A (en) * | 2019-06-24 | 2019-08-23 | 芜湖恒升重型机床股份有限公司 | A kind of bearing clearance pre-tension method and bearing arrangement |
| CN114799238A (en) * | 2022-06-28 | 2022-07-29 | 云南省机械研究设计院有限公司 | High-bearing large dynamic horizontal dynamic and static pressure main shaft system |
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| CN203176167U (en) * | 2013-04-12 | 2013-09-04 | 胡惜时 | Hybrid bearing |
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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 |
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| CN104819216A (en) * | 2014-05-09 | 2015-08-05 | 安徽安风风机有限公司 | Supporting device for axial movement of rotating shaft |
| CN110159663A (en) * | 2019-06-24 | 2019-08-23 | 芜湖恒升重型机床股份有限公司 | A kind of bearing clearance pre-tension method and bearing arrangement |
| 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 |
| CN114799238A (en) * | 2022-06-28 | 2022-07-29 | 云南省机械研究设计院有限公司 | High-bearing large dynamic horizontal dynamic and static pressure main shaft system |
| 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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| Publication number | Publication date |
|---|---|
| CN103498872B (en) | 2016-01-06 |
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