CN204420108U - A kind of electro spindle nose sealing configuration - Google Patents
A kind of electro spindle nose sealing configuration Download PDFInfo
- Publication number
- CN204420108U CN204420108U CN201420783689.5U CN201420783689U CN204420108U CN 204420108 U CN204420108 U CN 204420108U CN 201420783689 U CN201420783689 U CN 201420783689U CN 204420108 U CN204420108 U CN 204420108U
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- annular pass
- gland
- main shaft
- holding ring
- water holding
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Abstract
The utility model discloses a kind of electro spindle nose sealing configuration, comprise water holding ring and end cap and gland, gland is fixed on the front end of bearing support, end cap is fixed on the front end of gland, water holding ring is connected with spindle thread, first annular pass in narrow gap is provided with between end cap and main shaft, the water storage cavity of annular is provided with between end cap and water holding ring, the second annular pass is provided with between gland and water holding ring, the 3rd annular pass is provided with between gland and main shaft, upwards stagger mutually in main shaft diameter in second annular pass and the 3rd annular pass, first annular pass, water storage cavity, second annular pass and the 3rd annular pass are communicated with successively, form a continuous print drain outlet.The effect of first order sealing is played in first annular pass, water storage cavity, the second annular pass and the sealing of the 3rd formation second level, annular pass, the sealing configuration that first order sealing and second level sealing are formed can realize the effective sealing to electro spindle nose, significantly extends the working life of electro spindle and bearing.
Description
Technical field
The utility model relates to the sealing configuration of electro spindle in high-speed cutting manufacture field, specifically a kind of electro spindle nose sealing configuration.
Background technique
The important component part that electro spindle is applied as High Speed Cutting Technique, belongs to High Rotation Speed structure, has higher requirements to spindle speed.In high-speed machining process, cutting fluid easily sputters, and heat in metal cutting can cause cutting fluid evaporate and produce water vapour; In addition, in High Rotation Speed situation, due to the existence of the draught head near the main shaft that high speed rotating causes and siphonic effect, the pollutants such as chip, cutting fluid and water vapour are easily adsorbed to front step bearing from front-end of spindle gap, destroy the working environments such as bearing lubrication, bearing life is reduced and even burns.
Because electro spindle belongs to High Rotation Speed structure, therefore its forward end seal (i.e. nose sealing) need adopt noncontact seal, the quality of sealing structure will directly affect the quality of electro spindle forward end seal effect, thus affect the electro spindle fore bearing life-span, or even the working life of whole electro spindle.But existing sealing configuration is often difficult to the requirement meeting the sealing of electro spindle nose.Bad sealing configuration, likely just causes the electro spindle fault of a radical valence value hundreds of thousands to be reprocessed in several days or several months, and generally reprocesses cost in tens thousand of unit not etc.
Summary of the invention
Technical problem to be solved in the utility model is: for the deficiencies in the prior art, provides a kind of effective electro spindle nose sealing configuration, significantly can extend the working life of electro spindle and bearing.
The utility model solves the problems of the technologies described above adopted technological scheme: a kind of electro spindle nose sealing configuration, be arranged on the outside of the front end of main shaft, the front end of described main shaft is provided with bearing, the outside of described bearing is provided with bearing support, sealing structure comprises water holding ring and the end cap that is arranged on outside described water holding ring and gland, described gland is fixed on the front end of described bearing support, described end cap is fixed on the front end of described gland, described water holding ring is connected with described spindle thread, first annular pass in narrow gap is provided with between described end cap and described main shaft, the water storage cavity of annular is provided with between described end cap and described water holding ring, the second annular pass is provided with between described gland and described water holding ring, the 3rd annular pass is provided with between described gland and described main shaft, upwards stagger mutually in main shaft diameter in the second described annular pass and the 3rd described annular pass, the first described annular pass, described water storage cavity, the second described annular pass and the 3rd described annular pass are communicated with successively, form a continuous print drain outlet.Add man-hour, main shaft High Rotation Speed, front-end of spindle produces the pollutant such as cutting fluid, chip, first the centrifugal action that most of pollutant produces because of the High Rotation Speed of main shaft and throw away front-end of spindle, the first annular passage capable of being in narrow gap stops possible pollutant to enter, only the pollutant of minute quantity may enter in drain outlet through the first annular pass, and the effect of first order sealing is played in the first annular pass, on the basis of first order sealing, water storage cavity, second annular pass and the sealing of the 3rd formation second level, annular pass: when the pollutant through first order sealing axially moves ahead along main shaft, be introduced into water storage cavity, arrive the second annular pass and the 3rd annular pass again, owing to upwards staggering mutually in main shaft diameter in the second annular pass and the 3rd annular pass, pollutant is difficult to continue to move ahead, along with the continuous rotation of main shaft, these pollutants are thrown on the inwall of gland, and finally assemble in water storage cavity, after main shaft is static, these pollutants flow out front-end of spindle because of Action of Gravity Field.Therefore, the sealing configuration that first order sealing and second level sealing are formed can realize the effective sealing to electro spindle nose, significantly extends the working life of electro spindle and bearing.
The second described annular pass comprises the first roundabout groove of roundabout setting, the outer surface of described water holding ring is arranged at intervals with multiple convex the first bulge loop to described gland, namely the outer surface of described water holding ring is formed the first described roundabout groove.First roundabout groove can increase the area of contact of pollutant and water holding ring, increases the resistance that pollutant continues to move ahead, makes pollutant away from bearing.
The 3rd described annular pass comprises the second roundabout groove of roundabout setting, the outer surface of described main shaft is arranged at intervals with multiple convex the second bulge loop to described gland, namely the outer surface of described main shaft is formed the second described roundabout groove.On the basis of the first roundabout groove, the second roundabout groove can increase the resistance that pollutant moves ahead further, protects bearing better.
Labyrinth inner ring and labyrinth outer shroud is provided with between the rear end of described gland and the front end of described bearing, described labyrinth inner ring and described labyrinth outer shroud coordinate formation labyrinth structure by concaveconvex structure, the 4th annular pass in narrow gap is formed between described labyrinth inner ring and described labyrinth outer shroud, the 4th described annular pass is communicated with the 3rd described annular pass, described labyrinth inner ring is arranged on the outside of described main shaft by axis hole Spielpassung form, and described labyrinth outer shroud is arranged on the inner side of described bearing support by axis hole Spielpassung form.On the basis that first order sealing and the second level seal, coordinated the labyrinth inner ring and the sealing of the labyrinth outer shroud formation third level that form labyrinth structure by concaveconvex structure, the 3rd road barrier of formation sealing, reaches the better sealing effect of electro spindle nose.
Described gland offers some vents, and described some vents are connected with described drain outlet.In drain outlet, the dry air of the cleaning of certain pressure is passed into by some vents, can make to form positive pressure in drain outlet, make the external pressure of internal pressure higher than front-end of spindle of drain outlet, form air flow direction from inside to outside, thus form air-tight structure, form fourth stage sealing, this fourth stage is sealed into auxiliary seal, change the pressure drop situation at the sealing configuration place that main shaft High Rotation Speed brings, avoid siphonage, realize the optimal seal of electro spindle nose.
Compared with prior art, the utility model has the advantage of: electro spindle nose sealing configuration disclosed in the utility model, the end cap comprising water holding ring and be arranged on outside water holding ring and gland, first annular pass in narrow gap is provided with between end cap and main shaft, the water storage cavity of annular is provided with between end cap and water holding ring, the second annular pass is provided with between gland and water holding ring, the 3rd annular pass is provided with between gland and described main shaft, upwards stagger mutually in main shaft diameter in second annular pass and the 3rd annular pass, first annular pass, water storage cavity, second annular pass and the 3rd annular pass are communicated with successively, form a continuous print drain outlet.The effect of first order sealing is played in its first annular pass, on the basis of first order sealing, water storage cavity, the second annular pass and the sealing of the 3rd formation second level, annular pass, supplementary function is played to first order sealing, the sealing configuration that first order sealing and second level sealing are formed can realize the effective sealing to electro spindle nose, significantly extends the working life of electro spindle and bearing.
Accompanying drawing explanation
Fig. 1 is embodiment's sealing configuration design sketch after the installation of electro spindle front end;
Fig. 2 is the A place enlarged view in the Fig. 1 after 90 ° that turns clockwise.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
Electro spindle nose sealing configuration as shown in the figure, be arranged on the outside of the front end of main shaft 6, the front end of main shaft 6 is provided with bearing 7, the outside of bearing 7 is provided with bearing support 8, sealing structure comprises water holding ring 1 and the end cap 2 that is arranged on outside water holding ring 1 and gland 3, gland 3 is fixed on the front end of bearing support 8 by uniform screw lock, end cap 2 is fixed on the front end of gland 3 by screw lock, water holding ring 1 is threaded with main shaft 6, first annular pass 41 in narrow gap is provided with between end cap 2 and main shaft 6, the water storage cavity 42 of annular is provided with between end cap 2 and water holding ring 1, the second annular pass 43 is provided with between gland 3 and water holding ring 1, second annular pass 43 comprises the first roundabout groove 12 of roundabout setting, the outer surface of water holding ring 1 is arranged at intervals with multiple convex the first bulge loop 11 to gland 3, namely the outer surface of water holding ring 1 is formed the first roundabout groove 12, the 3rd annular pass 44 is provided with between gland 3 and main shaft 6, 3rd annular pass 44 comprises the second roundabout groove 62 of roundabout setting, the outer surface of main shaft 6 is arranged at intervals with multiple convex the second bulge loop 61 to gland 3, namely the outer surface of main shaft 6 is formed the second roundabout groove 62, mutually stagger in second annular pass 43 and the 3rd annular pass 44 in main shaft 6 radial direction, first annular pass 41, water storage cavity 42, second annular pass 43 and the 3rd annular pass 44 are communicated with successively, form a continuous print drain outlet, first annular pass 41 forms first order sealing, water storage cavity 42, second annular pass 43 and the 3rd annular pass 44 form second level sealing.
Labyrinth inner ring 51 and labyrinth outer shroud 52 is provided with between the rear end of gland 3 and the front end of bearing 7, labyrinth inner ring 51 and labyrinth outer shroud 52 coordinate formation labyrinth structure by concaveconvex structure, the 4th annular pass 45 in narrow gap is formed between labyrinth inner ring 51 and labyrinth outer shroud 52,4th annular pass 45 is communicated with the 3rd annular pass 44, labyrinth inner ring 51 is arranged on the outside of main shaft 6 by axis hole Spielpassung form, labyrinth outer shroud 52 is arranged on the inner side of bearing support 8 by axis hole Spielpassung form, and labyrinth inner ring 51 and labyrinth outer shroud 52 form third level sealing.
Gland 3 offers some vents 31, some vents 31 are connected with drain outlet.In drain outlet, the dry air of the cleaning of certain pressure is passed into by some vents 31, can make to form positive pressure in drain outlet, make the internal pressure of drain outlet higher than the external pressure of main shaft 6 front end, form air flow direction from inside to outside, thus formation air-tight structure, form fourth stage sealing.
The electro spindle nose sealing configuration of above-described embodiment, is made up of level Four sealing configuration, by the mutual complementation of sealing at different levels with seal step by step, can ensure the most effective sealing effect of electro spindle nose.
Claims (5)
1. an electro spindle nose sealing configuration, be arranged on the outside of the front end of main shaft, the front end of described main shaft is provided with bearing, the outside of described bearing is provided with bearing support, it is characterized in that sealing structure comprises water holding ring and the end cap that is arranged on outside described water holding ring and gland, described gland is fixed on the front end of described bearing support, described end cap is fixed on the front end of described gland, described water holding ring is connected with described spindle thread, first annular pass in narrow gap is provided with between described end cap and described main shaft, the water storage cavity of annular is provided with between described end cap and described water holding ring, the second annular pass is provided with between described gland and described water holding ring, the 3rd annular pass is provided with between described gland and described main shaft, upwards stagger mutually in main shaft diameter in the second described annular pass and the 3rd described annular pass, the first described annular pass, described water storage cavity, the second described annular pass and the 3rd described annular pass are communicated with successively, form a continuous print drain outlet.
2. a kind of electro spindle nose sealing configuration according to claim 1, it is characterized in that the second described annular pass comprises the first roundabout groove of roundabout setting, the outer surface of described water holding ring is arranged at intervals with multiple convex the first bulge loop to described gland, namely the outer surface of described water holding ring is formed the first described roundabout groove.
3. a kind of electro spindle nose sealing configuration according to claim 1 and 2, it is characterized in that the 3rd described annular pass comprises the second roundabout groove of roundabout setting, the outer surface of described main shaft is arranged at intervals with multiple convex the second bulge loop to described gland, namely the outer surface of described main shaft is formed the second described roundabout groove.
4. a kind of electro spindle nose sealing configuration according to claim 3, it is characterized in that between the rear end of described gland and the front end of described bearing, being provided with labyrinth inner ring and labyrinth outer shroud, described labyrinth inner ring and described labyrinth outer shroud coordinate formation labyrinth structure by concaveconvex structure, the 4th annular pass in narrow gap is formed between described labyrinth inner ring and described labyrinth outer shroud, the 4th described annular pass is communicated with the 3rd described annular pass, described labyrinth inner ring is arranged on the outside of described main shaft by axis hole Spielpassung form, described labyrinth outer shroud is arranged on the inner side of described bearing support by axis hole Spielpassung form.
5. a kind of electro spindle nose sealing configuration according to claim 1, it is characterized in that described gland offers some vents, described some vents are connected with described drain outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420783689.5U CN204420108U (en) | 2014-12-11 | 2014-12-11 | A kind of electro spindle nose sealing configuration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420783689.5U CN204420108U (en) | 2014-12-11 | 2014-12-11 | A kind of electro spindle nose sealing configuration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204420108U true CN204420108U (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420783689.5U Withdrawn - After Issue CN204420108U (en) | 2014-12-11 | 2014-12-11 | A kind of electro spindle nose sealing configuration |
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| CN (1) | CN204420108U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763217A (en) * | 2017-01-10 | 2017-05-31 | 佛山市金银河智能装备股份有限公司 | A kind of non-contact type high speed shaft seal mechanism |
| CN108317179A (en) * | 2018-03-09 | 2018-07-24 | 浙江顺联智能设备有限公司 | Fixing bearing case |
| CN109226791A (en) * | 2018-11-21 | 2019-01-18 | 陕西海力特精密机械有限公司 | The sealing structure of digital control machine tool tailstock live spindle |
| CN110425286A (en) * | 2019-08-20 | 2019-11-08 | 葛亮 | A kind of coaxial twayblade gas barrier sealing device |
| CN111360694A (en) * | 2020-04-01 | 2020-07-03 | 深圳市爱贝科精密机械有限公司 | Air seal mechanism for front end of main shaft |
| CN112025395A (en) * | 2020-09-14 | 2020-12-04 | 深圳市爱贝科精密机械有限公司 | Front end air seal mechanism of lathe spindle |
-
2014
- 2014-12-11 CN CN201420783689.5U patent/CN204420108U/en not_active Withdrawn - After Issue
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763217A (en) * | 2017-01-10 | 2017-05-31 | 佛山市金银河智能装备股份有限公司 | A kind of non-contact type high speed shaft seal mechanism |
| CN108317179A (en) * | 2018-03-09 | 2018-07-24 | 浙江顺联智能设备有限公司 | Fixing bearing case |
| CN109226791A (en) * | 2018-11-21 | 2019-01-18 | 陕西海力特精密机械有限公司 | The sealing structure of digital control machine tool tailstock live spindle |
| CN110425286A (en) * | 2019-08-20 | 2019-11-08 | 葛亮 | A kind of coaxial twayblade gas barrier sealing device |
| CN110425286B (en) * | 2019-08-20 | 2020-07-03 | 乐清市芮易经济信息咨询有限公司 | Coaxial double-blade gas isolation sealing device |
| CN111706529A (en) * | 2019-08-20 | 2020-09-25 | 刘小龙 | Coaxial double-blade gas isolation sealing device |
| CN111706530A (en) * | 2019-08-20 | 2020-09-25 | 刘小龙 | Coaxial double-blade gas isolation sealing device |
| CN111706529B (en) * | 2019-08-20 | 2021-06-29 | 苏州玛旭自动化科技有限公司 | Coaxial double-blade gas isolation sealing device |
| CN111706530B (en) * | 2019-08-20 | 2021-06-29 | 苏州玛旭自动化科技有限公司 | Coaxial double-blade gas isolation sealing device |
| CN111360694A (en) * | 2020-04-01 | 2020-07-03 | 深圳市爱贝科精密机械有限公司 | Air seal mechanism for front end of main shaft |
| CN112025395A (en) * | 2020-09-14 | 2020-12-04 | 深圳市爱贝科精密机械有限公司 | Front end air seal mechanism of lathe spindle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150624 Effective date of abandoning: 20210125 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20150624 Effective date of abandoning: 20210125 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |