CN204262368U - A kind of machining center electric main shaft structure - Google Patents
A kind of machining center electric main shaft structure Download PDFInfo
- Publication number
- CN204262368U CN204262368U CN201420434524.7U CN201420434524U CN204262368U CN 204262368 U CN204262368 U CN 204262368U CN 201420434524 U CN201420434524 U CN 201420434524U CN 204262368 U CN204262368 U CN 204262368U
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- bearing
- single row
- main shaft
- row roller
- angular contact
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Abstract
The utility model discloses a kind of machining center electric main shaft structure, comprise main shaft, fore bearing gland, fore bearing sealing spacer, sealing locknut, front-end bearing pedestal, bearing inner spacing collar, bearing outer separator, 2 angular contact bearings, casing, stator core, rear bearing sealing spacer, rear bearing block, 1 single row roller bearing, encoder seat, rear bearing gland.This electro spindle front end uses 2 angular contact bearings, rear end uses 1 single row roller bearing, because single row roller bearing inner and outer rings can be separated, when electro spindle temperature raises, main shaft expanded by heating, axial elongation, just relative displacement is there occurs between the inner and outer rings of single row roller bearing, do not produce interaction force between bearing inner and outer rings, extend the life-span of bearing, better ensure that the precision of main shaft.The machining center electro spindle that the utility model provides, solves the bearing hidden danger that existing electro spindle has, and not only assembly process is simple, runs more reliable and more stable, safeguards simple and convenient.
Description
Technical field
The utility model relates to machine tool field, particularly relates to a kind of machining center electro spindle.
Background technology
At present, most machining center electro spindle mainly uses angular contact bearing, and front end uses 2 ~ 4 angular contact bearings, and rear end uses 2 angular contact bearings.
Rotor is equipped with in machining center electro spindle inside, in time working, rotor can generate heat, because temperature raises, the main shaft generation thermal expansion of machining center electro spindle, axially just extend, two of rear end angular contact bearings are made backward axial displacement to occur together, just major hidden danger is there will be: one, when fit tolerance is less between rear end angular contact bearing outer shroud and bearing block from use angle, bearing is just not easy to move backward, make bearing inner ring and outer shroud create very large interaction force, easily cause bearing damage; Its two, when fit tolerance is larger between rear end angular contact bearing outer shroud and bearing block, solve the problem of axial displacement, but at high speed, outer race likely rotates together with bearing inner ring, causes bearing damage; Its three, processing one can the bearing block of axial float, and make main shaft axial elongation, bearing block sends displacement together with bearing, but floating bearing bracket processed complex, cost is higher.。
Summary of the invention
The technical problem that the utility model solves solves the problems such as bearing hidden danger, processing cost that existing machining center electro spindle has are higher, provides the machining center electro spindle of a kind of dependable performance, low processing cost.
For solving the problems of the technologies described above, the utility model provides a kind of machining center electro spindle, comprises main shaft, fore bearing gland, fore bearing sealing spacer, sealing locknut, front-end bearing pedestal, bearing inner spacing collar, bearing outer separator, 4 angular contact bearings, casing, stator core, rear bearing sealing spacer, rear bearing block, 1 single row roller bearing, encoder seat, rear bearing gland.
Described 4 angular contact bearing hot chargings are on main shaft, and centre is overlapped by bearing cabinet, bearing outer separator separates, and front end is by the inner ring sealing locknut fixing and locking 4 angular contact bearings.
Described front-end bearing pedestal is enclosed within 4 bearings, and is fixed the outer shroud of 4 angular contact bearings by sealing spacer by fore bearing gland.
Described stator core, press-fits in casing
Described casing, front end connects front-end bearing pedestal, and rear end connects rear bearing block.
Described 1 single row roller bearing is fixed on rear-end of spindle, and single row roller bearing front end is by rear bearing sealing spacer adjustment axial distance, and rear end compresses single row roller bearing by rear bearing gland by encoder seat.
Compared with prior art, the utility model at least has following beneficial effect:
1, the utility model adopts 4, front end angular contact bearing, the structure of 1 single row roller bearing in rear end, because single row roller bearing inner and outer rings can be separated, when spindle heat generation expands, single row roller bearing inner and outer rings can relative movement, and do not produce interaction force between inner and outer rings, substantially prolongs the life-span of bearing, better ensure that the precision of main shaft.
2, front-end bearing pedestal, casing, rear bearing block have been made a blank by the utility model, eliminate the multi-section operation of parts processing assembling, and more firmly run more reliable, and manufacturing cost is also relatively low.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the machining center electro spindle of the utility model embodiment.
Reference numeral: 1-main shaft, 2-fore bearing gland, 3 sealing locknuts, 4-seals spacer, 5-front-end bearing pedestal, 6-angular contact bearing, 7-bearing outer separator, 8-bearing cabinet overlaps, 9-casing, 10-stator core, 11-rear bearing sealing spacer, 12-single row roller bearing, 13-rear bearing block, 14-encoder seat, 15-rear bearing gland.
Detailed description of the invention
For overcoming the technical problem that existing electro spindle exists, the utility model proposes a kind of machining center electro spindle, carrying out alternative traditional electro spindle.
The machining center electro spindle that the utility model proposes, it comprises main shaft, fore bearing gland, fore bearing sealing spacer, sealing locknut, front-end bearing pedestal, bearing inner spacing collar, bearing outer separator, 4 angular contact bearings, casing, stator, rear bearing sealing spacer, rear bearing block, 1 single row roller bearing, encoder seat, rear bearing gland.
Described 4 angular contact bearing hot chargings are on main shaft, and centre is overlapped by bearing cabinet, bearing outer separator separates, and front end is by the inner ring sealing locknut fixing and locking 4 angular contact bearings.
Described front-end bearing pedestal is enclosed within 4 bearings, and is fixed the outer shroud of 4 angular contact bearings by sealing spacer by fore bearing gland.
Described stator core, press-fits in casing.
Wherein, described stator core is embedded with stator winding, described stator winding is double-layer overlapped winding.
Described casing, front end connects front-end bearing pedestal, and rear end connects rear bearing block.
Described 1 single row roller bearing is fixed on rear-end of spindle, and single row roller bearing front end is by rear bearing sealing spacer adjustment axial distance, and rear end compresses single row roller bearing by rear bearing gland by encoder seat
For the ease of setting forth the utility model, be described in further detail below with reference to the enforcement of drawings and the specific embodiments to technical solutions of the utility model.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can be combined mutually.
As shown in Figure 1, the machining center electro spindle of the embodiment of the present application mainly comprises: 1-main shaft, 2-fore bearing gland, 3 sealing locknuts, 4-seals spacer, 5-front-end bearing pedestal, 6-angular contact bearing, 7-bearing outer separator, 8-bearing cabinet overlaps, 9-casing, 10-stator core, 11-rear bearing sealing spacer, 12-single row roller bearing, 13-rear bearing block, 14-encoder seat, 15-rear bearing gland.
Wherein: electro spindle is in operation process, and stator core can generate heat, and makes main shaft axial elongation, the cylinder roller bearing of rear end, because bearing inner and outer rings can relative movement, make not produce stress between bearing internal external ring.
These are only preferred case study on implementation of the present utility model; be not limited to the utility model; the utility model also can have other various embodiments; when not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the utility model, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the utility model.
Claims (2)
1.
a kind of machining center electro spindle, comprise main shaft, fore bearing gland, fore bearing sealing spacer, sealing locknut, front-end bearing pedestal, bearing inner spacing collar, bearing outer separator, 4 angular contact bearings, casing, stator core, rear bearing sealing spacer, rear bearing block, 1 single row roller bearing, encoder seat, rear bearing gland, 4 described angular contact bearings, hot charging is at front-end of spindle, centre is overlapped by bearing cabinet, bearing outer separator separately, front end is by the inner ring sealing locknut fixing and locking 4 angular contact bearings, 1 described single row roller bearing, be fixed on rear-end of spindle, by rear bearing sealing spacer adjustment axial distance, rear end compresses single row roller bearing by rear bearing gland by encoder seat.
2. a kind of machining center electro spindle as claimed in claim 1, is characterized in that 4, front angular contact bearing, 1, rear end single row roller bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420434524.7U CN204262368U (en) | 2014-08-04 | 2014-08-04 | A kind of machining center electric main shaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420434524.7U CN204262368U (en) | 2014-08-04 | 2014-08-04 | A kind of machining center electric main shaft structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204262368U true CN204262368U (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420434524.7U Active CN204262368U (en) | 2014-08-04 | 2014-08-04 | A kind of machining center electric main shaft structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN204262368U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105458306A (en) * | 2015-12-31 | 2016-04-06 | 西安交通大学 | High-speed electric main shaft device where ultra-precise angular contact ball and cylindrical roller bearings are used |
| CN112059212A (en) * | 2020-08-06 | 2020-12-11 | 珠海格力电器股份有限公司 | Spindle front end structure and electric spindle |
-
2014
- 2014-08-04 CN CN201420434524.7U patent/CN204262368U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105458306A (en) * | 2015-12-31 | 2016-04-06 | 西安交通大学 | High-speed electric main shaft device where ultra-precise angular contact ball and cylindrical roller bearings are used |
| CN112059212A (en) * | 2020-08-06 | 2020-12-11 | 珠海格力电器股份有限公司 | Spindle front end structure and electric spindle |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |