CN203527201U - Grinding wheel spindle of groove grinder - Google Patents
Grinding wheel spindle of groove grinder Download PDFInfo
- Publication number
- CN203527201U CN203527201U CN201320667448.XU CN201320667448U CN203527201U CN 203527201 U CN203527201 U CN 203527201U CN 201320667448 U CN201320667448 U CN 201320667448U CN 203527201 U CN203527201 U CN 203527201U
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- air
- rotor
- bearing
- grinding wheel
- wheel spindle
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- Expired - Lifetime
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 229910001651 emery Inorganic materials 0.000 claims description 12
- 239000000725 suspension Substances 0.000 claims description 4
- 238000003754 machining Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 9
- 230000005611 electricity Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000036651 mood Effects 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
The utility model belongs to the technical field of bearing manufacturing, and provides a grinding wheel spindle of a groove grinder. The grinding wheel spindle of the groove grinder comprises a steel cylinder (19), a rotor (16) and a stator (17), an air bearing motorized spindle supported by a radial air bearing and an axial air bearing (20) is adopted for the grinding wheel spindle (7), the radial air bearing is arranged on the rotor (16) in a sleeved mode, a gap is formed between the radial air bearing and the rotor (16), a gap is formed between the steel cylinder (19) and the stator (17) arranged on the rotor (16) in a sleeved mode, and the axial air bearing (20) is arranged at the rear end of the rotor (16). The machining accuracy of bearing rings is improved, and service life of the bearings is prolonged.
Description
Technical field
The utility model belongs to bearing manufacturing technology field, is specifically related to a kind of grinding wheel spindle of groove grinder.
Background technology
Fig. 1 provides bearing ring and produces the structural representation with groove grinder, and groove grinder includes lathe bed 1, is not in the mood for jig 4, workpiece spindle 3, grinding wheel spindle 7, wheel dresser and electric-control system 9; The output of described workpiece spindle 3 is by the bearing ring of the required processing of centerless fixture 4 clamping; The output of described grinding wheel spindle 7 is provided with in order to bearing ring is carried out to the emery wheel of grinding; Described workpiece spindle 3 and wheel dresser are fixed in line slideway I 2, and described line slideway I 2 can the radial direction along workpiece spindle be moved on lathe bed 1, make to be clamped in the axis of bearing ring and the dead in line of emery wheel on workpiece spindle 3 outputs; Described grinding wheel spindle 7 is fixed in line slideway II 8, and described line slideway II 8 can be moved by the axial direction along workpiece spindle on lathe bed, to the position corresponding with the bearing ring of required processing, bearing ring is carried out to grinding.Described wheel dresser is in order to repair emery wheel.
The precision and stability of the various piece of groove grinder all has on the machining accuracy of the raceway groove of bearing ring the impact varying in size.Improvement with regard to grinding wheel spindle is herein discussed to improve the precision quality of groove grinder machining bearing raceway groove.
In the situation that miscellaneous part precision and the stability indicator of workpiece spindle and groove grinder are certain, the structure of grinding wheel spindle has a significant impact the quality of bearing ring processing; Particularly, the circularity that comprises raceway groove of the rotor of the grinding wheel spindle size that axially moves forward and backward size and radial beat and vibration when rotated to bearing channel, the uniformity of ditch curvature and the fineness of raceway groove have direct significant impact, that is to say, by improving axial displacement amplitude when rotated of grinding wheel spindle rotor and radial beat and vibration, can improve greatly the quality such as the precision of bearing ring channel and fineness.
Bearing ring is divided into outer collar and inside race; During the bear inner ring grooved railway of grinding bearing, existing groove grinder all adopts liquid-bearing main shaft as grinding wheel spindle; Liquid-bearing main shaft feature is that the running accuracy of its rotor is large, and rigidity and support force axially and are radially larger, but rotating speed is lower, can not surpass 3000RPM; Otherwise, when the rotating speed of rotor is larger, can make the liquid of liquid-bearing produce larger resistance and make electric main shaft produce very large fever phenomenon; Specific practice is to make the rotor speed control of liquid-bearing main shaft in 3000RPM, when but if the diameter of emery wheel is 150mm left and right, keep the linear velocity of emery wheel to reach the requirement of grinding, just require the rotating speed of rotor to be greater than 3000RPM, at this moment adopt the electric main shaft that liquid-bearing supports just no longer can meet instructions for use as grinding wheel spindle.
During the outer raceway groove of grinding bearing, due to rotor speed limitation and the limitation of brearing bore diameter to the generation of grinding wheel diameter size of liquid-bearing, liquid-bearing main shaft can not be for the outer raceway groove of grinding bearing outer collar; Production of bearing industry all adopts ball bearing electricity main shaft as the outer raceway groove of grinding wheel spindle grinding bearing; The feature of ball bearing electricity main shaft is that rotor can reach the speed higher compared with liquid-bearing main shaft, as 50000RPM to 100000RPM; When the internal diameter of the bearing of root diameter and main shaft is very little, the rotating speed of rotor even can reach 500000RPM, and as dental drill bearings, but when rotating speed is higher, beat during rotor and vibration are all very large, cause the second-rate of the outer raceway groove of processed bearing.And along with the long-time use of the ball bearing electricity main shaft as grinding wheel spindle on groove grinder, the ball bearing in electric main shaft can progressively wear and tear and make spindle rotor running accuracy variation.
Utility model content
For solving the problems of the technologies described above, the purpose of this utility model is the grinding wheel spindle that proposes a kind of groove grinder.
The utility model adopts following technical scheme for completing above-mentioned purpose:
A grinding wheel spindle for groove grinder, described grinding wheel spindle includes steel cylinder, rotor and stator; Described rotor is positioned at steel cylinder, and the center line of rotor and the center line of steel cylinder overlap, and the front end of described rotor, as output, is installed emery wheel in the termination of output; Described grinding wheel spindle adopts the air bearing electric main-shaft being supported by radial air bearing and arrangement of axial air bearings; Described radial air bearing is nested with on rotor, and and rotor between there is gap, form rotor in radial direction the suspension support structure by air bearings support; Described stator is nested with on described rotor, between described stator and steel cylinder, has gap; Gap described between stator and steel cylinder is communicated with the gap between radial air bearing and rotor; In order to rotor is carried out to the described arrangement of axial air bearings of axial support, be arranged on the rear end of rotor; Described grinding wheel spindle has compressed air inlet and compressed air air flue, and described compressed air air flue is communicated with compressed air inlet.
Described radial air bearing is two that front and back arrange, i.e. front air bearing and rear air bearing; Described stator is between front air bearing and rear air bearing, and between stator and steel cylinder, described gap is communicated with the gap between air bearing, front air bearing and rotor afterwards.
Described compressed air air flue includes compressed air air flue I, the gap before described compressed air air flue I is communicated with between air bearing and rotor.
Described compressed air air flue comprises that promising arrangement of axial air bearings provides compressed-air actuated compressed air air flue II.
The center of described rotor has to dismantle the compressed air air flue III of emery wheel; Described compressed air air flue III is communicated with compressed air gas source by compressed air inlet III.
The grinding wheel spindle of a kind of groove grinder the utility model proposes, the air electricity main shaft that adopt described grinding wheel spindle radial air bearing and arrangement of axial air bearings support, the rotor of air bearing electric main-shaft stands, active force from outer load, when it rotates stable be distributed in a little go up, make the surface luminous intensity of institute's machining bearing lasso more smooth, operation principle and feature by air bearing electric main-shaft are determined, its rotor can reach very high rotating speed, can reach easily 50000 to 125000RPM the range of speeds that can meet raceway groove outside groove grinder grinding wheel spindle grinding outer ring, simultaneously when rotated axially move forward and backward with radial beat less, far away higher than the rotor of ball bearing electricity main shaft phase closing precision when rotated, make the precision of bearing ring of processing higher, thereby improved the machining accuracy of bearing, and extended the service life of bearing, meanwhile, the operation principle of air bearing make its when working long hours without wearing and tearing, further guaranteed for a long time the precision of air electricity main shaft.
Accompanying drawing explanation
Fig. 1 is the structural representation of groove grinder.
Fig. 2 is structural representation of the present utility model.
In figure: 1, lathe bed, 2, line slideway I, 3, workpiece spindle, 4, be not in the mood for jig, 5, trimmer, 6, trimmer seat, 7, grinding wheel spindle, 8, line slideway II, 9, electric-control system, 16, rotor, 17, stator, 18-1, rear air bearing, 18-2, front air bearing, 19, steel cylinder, 20, arrangement of axial air bearings, 21, pressure plare, 22, end cap, 23, emery wheel, 24, compressed air air flue I.
The specific embodiment
With specific embodiment, the utility model is illustrated by reference to the accompanying drawings:
As shown in Figure 2, a kind of grinding wheel spindle of groove grinder, described grinding wheel spindle includes steel cylinder 19, rotor 16 and stator 17; Described rotor 16 is positioned at steel cylinder 19, and the center line of rotor 13 overlaps with the center line of steel cylinder 19, and the front end of described rotor 16, as output, is installed emery wheel 23 in the termination of output; Described grinding wheel spindle 7 adopts the air bearing electric main-shaft being supported by radial air bearing and arrangement of axial air bearings 20; Described radial air bearing is two that front and back arrange: front air bearing 18-2 and rear air bearing 18-1; Described front air bearing 18-2 and rear air bearing 18-1 are all nested with on rotor 16, and and rotor 16 between there is gap, form rotor 16 in the suspension support structure of radial direction; Described stator 17, between front air bearing and 18-2, rear air bearing 18-1, and is nested with on described rotor 16; Between described stator 17 and steel cylinder 19, there is gap; The gap having between stator 17 and steel cylinder 19 is communicated with the gap between two air bearing and rotor; Described grinding wheel spindle has compressed air inlet I and compressed air air flue I 24; Described compressed air inlet I is positioned on steel cylinder; Described compressed air air flue I 24 consists of the gap between rotor 16 and rear air bearing 18-1; Described compressed air air flue I 24 and rotor 16 and the rear air bearing 18-1 gap between is radially communicated with.
In order to rotor is carried out to the described arrangement of axial air bearings 20 of axial support, be arranged on the rear end of rotor; Described arrangement of axial air bearings 20 acts on rotor by pressure plare 21, and described arrangement of axial air bearings 20 is sealed by end cap 22; On described end cap 22, have with thinking that arrangement of axial air bearings 20 provides compressed-air actuated compressed air inlet II; And there is the compressed air air flue II being communicated with compressed air inlet II; In described arrangement of axial air bearings 20, all there is the air cavity being communicated with compressed air air flue II between arrangement of axial air bearings 20 and pressure plare 21.In this embodiment, described arrangement of axial air bearings 20 consists of some circular slabs with centre bore, between some described circular slabs, has gap, forms the air cavity being communicated with compressed air air flue II; Be arranged on the cavity that the pressure plare 21 between described arrangement of axial air bearings 20 and rotor 16 has, form the air cavity being communicated with compressed air air flue II, between described pressure plare 21 and rotor 16, there is gap, form the suspension support structure axial to rotor 16.
Described rotor 16 center has to dismantle the compressed air air flue III of emery wheel, and described compressed air air flue III is communicated with compressed air gas source by compressed air inlet III.
Claims (5)
1. a grinding wheel spindle for groove grinder, described grinding wheel spindle includes steel cylinder (19), rotor (16) and stator (17); Described rotor (16) is positioned at steel cylinder (19), and the center line of rotor (16) overlaps with the center line of steel cylinder (19), and the front end of described rotor (16), as output, is installed emery wheel (23) in the termination of output; It is characterized in that: described grinding wheel spindle (7) adopts the air bearing electric main-shaft being supported by radial air bearing and arrangement of axial air bearings (20); Described radial air bearing is nested with at rotor (16) upper, and and rotor (16) between there is gap, form rotor in the suspension support structure of radial direction; Described stator (17) is nested with at described rotor (16) upper, between described stator (17) and steel cylinder (19), has gap, and the gap described between stator and steel cylinder is communicated with the gap between radial air bearing and rotor; In order to rotor is carried out to the described arrangement of axial air bearings (20) of axial support, be arranged on the rear end of rotor (16); Described grinding wheel spindle has compressed air inlet and compressed air air flue, and described compressed air air flue is communicated with compressed air inlet.
2. the grinding wheel spindle of groove grinder according to claim 1, is characterized in that: described radial air bearing is two that front and back arrange, i.e. front air bearing (18-2) and rear air bearing (18-1); Described stator (17) is positioned between front air bearing (18-2) and rear air bearing (18-1); Gap described between stator and steel cylinder is communicated with the gap between front air bearing (18-2), rear air bearing (18-1) and rotor.
3. the grinding wheel spindle of groove grinder according to claim 1 and 2, it is characterized in that: described compressed air air flue includes compressed air air flue I (24) gap before described compressed air air flue I (24) is communicated with between air bearing (18-2) and rotor (16).
4. the grinding wheel spindle of groove grinder according to claim 1, is characterized in that: described compressed air air flue comprises that promising arrangement of axial air bearings (20) provides compressed-air actuated compressed air air flue II.
5. the grinding wheel spindle of groove grinder according to claim 1, is characterized in that: the center of described rotor (16) has to dismantle the compressed air air flue III of emery wheel; Described compressed air air flue III is communicated with compressed air gas source by compressed air inlet III.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320667448.XU CN203527201U (en) | 2013-10-28 | 2013-10-28 | Grinding wheel spindle of groove grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320667448.XU CN203527201U (en) | 2013-10-28 | 2013-10-28 | Grinding wheel spindle of groove grinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203527201U true CN203527201U (en) | 2014-04-09 |
Family
ID=50413462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320667448.XU Expired - Lifetime CN203527201U (en) | 2013-10-28 | 2013-10-28 | Grinding wheel spindle of groove grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203527201U (en) |
-
2013
- 2013-10-28 CN CN201320667448.XU patent/CN203527201U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |