CN203557240U - Groove grinder - Google Patents
Groove grinder Download PDFInfo
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- CN203557240U CN203557240U CN201320667529.XU CN201320667529U CN203557240U CN 203557240 U CN203557240 U CN 203557240U CN 201320667529 U CN201320667529 U CN 201320667529U CN 203557240 U CN203557240 U CN 203557240U
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- air bearing
- gap
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- 229910001651 emery Inorganic materials 0.000 claims description 24
- 238000010276 construction Methods 0.000 claims description 12
- 239000000725 suspension Substances 0.000 claims description 11
- 230000036651 mood Effects 0.000 claims description 6
- 238000009827 uniform distribution Methods 0.000 claims description 6
- 229910003460 diamond Inorganic materials 0.000 claims description 5
- 239000010432 diamond Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 9
- 239000007788 liquid Substances 0.000 description 9
- 238000003754 machining Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model belongs to the technical field of bearing manufacture, and particularly relates to a groove grinder. The provided groove grinder comprises a grinder body (1), a coreless fixture (4), a work spindle (3), a grinding wheel spindle (7), a grinding wheel dressing device and an electric control system (9), wherein the work spindle (3) adopts an air bearing motorized spindle supported by an air bearing I (13) and a thrust bearing I (15); the grinding wheel spindle (7) adopts an air bearing motorized spindle supported by radial air bearings and an axial air bearing (22); and a support structure of a spindle comprises an air bearing II (27), a steel cylinder III (28) and a thrust bearing II (29) used for axially supporting the spindle. According to the groove grinder, the problem of low rotation accuracy caused by large axial forward and backward displacement of a rotor and the spindle is solved, the accuracy of a processed bearing ring is higher, the processing accuracy of bearings is improved, and the service lives of the bearings are prolonged.
Description
Technical field
The utility model belongs to bearing manufacturing technology field, is specifically related to a kind 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 workpiece spindle 3 axis of output bearing ring and the dead in line of emery wheel; 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; Described wheel truing device includes trimmer, drives servomotor and the diamond pen in order to emery wheel is revised of trimmer action; Described trimmer includes the supporting construction of rotating shaft, axle sleeve and trimmer; Described rotating shaft is positioned at axle sleeve, and axle sleeve is stretched out at the two ends of rotating shaft; One end of rotating shaft is connected with the output shaft of servomotor, and the other end is installed the diamond pen in order to emery wheel is revised; Described trimmer rotating shaft adopts ball bearing to support, and described ball bearing is between rotating shaft and axle sleeve.
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 workpiece spindle, grinding wheel spindle and corrector is herein discussed to improve the precision quality of groove grinder machining bearing raceway groove.
Workpiece spindle: because the rotor of workpiece spindle axial float when rotated directly has influence on the raceway groove position of bearing ring, the radial beat of the rotor of workpiece spindle directly has influence on bearing ring channel by affecting play when rotated of rotor and at mill, adds the precision in man-hour, so the radial beat of workpiece spindle rotor and axial float have obviously larger impact to the crudy of the raceway groove of bearing ring.
In said structure, described workpiece spindle includes steel cylinder, stator and rotor; Described rotor is positioned at steel cylinder, and described stator is nested with on rotor, and described workpiece spindle adopts ball bearing electricity main shaft, on the rotor of workpiece spindle, is nested with ball bearing; Yet adopt ball bearing electricity main shaft, as its rotor of workpiece spindle, axial float and radial beat easily occur when rotated, therefore adopt ball bearing electricity main shaft directly to have influence on the precision of bearing ring channel processing as workpiece spindle, thereby the running accuracy of impact; Due to the limitation of ball bearing electricity main shaft in precision, accomplish to make the high accuracy of axial float when rotated of workpiece spindle rotor and radial beat extremely difficult; And along with the long use of groove grinder, the ball bearing on workpiece spindle can grind an ancient egg-shaped, holed wind instrument and affect the precision that makes electric main shaft.
Grinding wheel spindle: 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.
Trimmer: in the situation that miscellaneous part precision and the stability indicator of workpiece spindle and groove grinder are certain, the supporting construction of dresser has a significant impact the quality of bearing ring processing.Particularly, the outer diametal curve circularity of emery wheel has direct significant impact to the quality of the raceway groove of the raceway groove of grinding wheel spindle grinding bearing internal external lasso and overcoat.Emery wheel must be repaired out satisfactory high-quality ditch shape and curvature by dresser.
At present, bearing machining both domestic and external adopts ball bearing to support with the rotating shaft of the trimmer of groove grinder, and its radial beat directly has influence on the curve circularity of institute's trimming wheel; The limitation of the rotating shaft precision supporting due to ball bearing, accomplish to make the high-precision requirement of rotating shaft radial beat when rotated extremely difficult; And along with the long-time use as on groove grinder, the ball bearing in trimmer can progressively wear and tear and make rotating shaft running accuracy variation.
Utility model content
For solving the problems of the technologies described above, the purpose of this utility model is to propose a kind of groove grinder.
The utility model adopts following technical scheme for completing above-mentioned purpose:
A groove grinder, groove grinder includes lathe bed, is not in the mood for jig, workpiece spindle, grinding wheel spindle, wheel dresser and electric-control system; Described workpiece spindle includes steel cylinder I, rotor I and stator I; Described rotor I output clamps the bearing ring of required processing by centerless fixture; Described grinding wheel spindle includes steel cylinder II, rotor II and stator II; The front end of described rotor II is as output, at the output of rotor II, is provided with in order to bearing ring is carried out to the emery wheel of grinding; Described workpiece spindle and wheel dresser are fixed in line slideway I, and described line slideway I can the radial direction along workpiece spindle be moved on lathe bed; Described grinding wheel spindle is fixed in line slideway II, and described line slideway II can be moved by the axial direction along workpiece spindle on lathe bed; Described wheel dresser is in order to repair emery wheel; Described wheel truing device includes trimmer, drives servomotor and the diamond pen in order to emery wheel is revised of trimmer action;
Described workpiece spindle adopts the air bearing electric main-shaft being supported by air bearing I and thrust bearing I; Described air bearing I is nested with in rotor I, and and rotor I between there is gap, form rotor I in the suspension support structure of radial direction; In order to rotor I is carried out to the described thrust bearing I of axial support, be arranged on the output of rotor I;
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 in rotor II, and and rotor II between there is gap, form rotor II in radial direction the suspension support structure by air bearings support; Described stator II is nested with in described rotor II, between described stator II and steel cylinder II, has gap; Gap described between stator II and steel cylinder II is communicated with the gap between radial air bearing and rotor II; In order to rotor II is carried out to the described arrangement of axial air bearings of axial support, be arranged on the rear end of rotor II;
Described trimmer includes the supporting construction of rotating shaft and rotating shaft; The supporting construction of described rotating shaft includes air bearing II, steel cylinder III and in order to countershaft, carries out the thrust bearing II of axial support; Described air bearing II is nested with in rotating shaft, and and rotating shaft between there is gap, be formed in the structure that radial direction countershaft carries out suspension support; Described steel cylinder III is coated on the outside of air bearing II, and has gap between steel cylinder III and air bearing II; Described thrust bearing II is nested with the one end at the nearly servomotor of air bearing II.
Described workpiece spindle is provided with compressed air air admission hole I and compressed air air flue I; Described compressed air air flue I is communicated with compressed air air admission hole I; Between described air bearing I and steel cylinder I, there is gap, described air bearing I has the radial hole being communicated with compressed air air flue I, some row that described radial hole in air bearing I is axially-aligned, the radial hole described in every row is a plurality of along air bearing I circumference uniform distribution; The described radial hole of air bearing I is communicated with the gap between air bearing I and rotor I.
Described radial air bearing is two that front and back arrange, i.e. front air bearing and rear air bearing; Described stator II is between front air bearing and rear air bearing; Between stator II and steel cylinder II, described gap is communicated with the gap between air bearing, front air bearing and rotor II afterwards.
Described grinding wheel spindle has compressed air air admission hole and compressed air air flue; Described compressed air air flue includes the compressed air air flue II that is communicated with gap between radial air bearing and rotor II, for arrangement of axial air bearings provides compressed-air actuated compressed air air flue III.
Described rotor Ⅱ center has to dismantle the compressed air air flue IV of emery wheel, and described compressed air air flue IV is communicated with compressed air gas source by compressed air air admission hole IV.
The supporting construction of the rotating shaft of described trimmer is provided with compressed air air admission hole V and compressed air air flue V, and described compressed air air flue V is communicated with compressed air air admission hole V; Described compressed air air flue V is communicated with the gap between air bearing II and steel cylinder III; In described air bearing II, have the radial hole that is communicated with gap between air bearing II and steel cylinder III, the described radial hole in air bearing II is some row of arrangement vertically, and the radial hole described in every row is a plurality of along air bearing II circumference uniform distribution; Described radial hole in air bearing II is communicated with the gap between air bearing II and rotating shaft.
A kind of groove grinder the utility model proposes, the air bearing electric main-shaft that described workpiece spindle adopts air bearing I and thrust bearing I to support, described grinding wheel spindle adopts the air bearing electric main-shaft being supported by radial air bearing and arrangement of axial air bearings, the rotating shaft of trimmer adopts by air bearing II, steel cylinder III with in order to countershaft carries out the supporting construction that the thrust bearing II of axial support forms, the rotor of air bearing electric main-shaft and the rotating shaft of being supported by air bearing II stand, 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, workpiece spindle rotor, the rotating shaft of grinding wheel spindle rotor and trimmer axially moving forward and backward is when rotated less and radial beat is less, thereby higher than the rotor of ball bearing electricity main shaft phase closing precision when rotated, realize the more high-precision processing to bearing ring channel far away, thereby the machining accuracy of bearing and the service life of prolongation bearing have been improved.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 structure chart of groove grinder.
Fig. 2 is the structural representation of workpiece spindle in the utility model.
Fig. 3 is the structural representation of the utility model medium sand wheel shaft.
Fig. 4 is the structural representation of trimmer in the 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, 11, rotor I, 12, stator I, 13, air bearing I, 14, steel cylinder I, 15, thrust bearing I, 16, bonnet, 17, cooling water cavity, 18, rotor II, 19, stator II, 20-1, front air bearing, 20-2, rear air bearing, 21, steel cylinder II, 22, arrangement of axial air bearings, 23, pressure plare I, 24, end cap, 25, emery wheel, 26, rotating shaft, 27, air bearing II, 28, steel cylinder III, 29, thrust bearing II, 30, pressure plare II, 31, dust cap, 32, distance collar, 33, compressed air air flue I, 34, compressed air air flue II.
The specific embodiment
With specific embodiment, the utility model is illustrated by reference to the accompanying drawings:
As shown in Figure 1, a kind of groove grinder, described 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 workpiece spindle 3 axis of output bearing ring and the dead in line of emery wheel; 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; Described wheel truing device includes trimmer, drives servomotor and the diamond pen in order to emery wheel is revised of trimmer action.
As shown in Figure 2, a kind of workpiece spindle of groove grinder, described workpiece spindle includes steel cylinder I 14, rotor I 11 and stator I 12; Described rotor I 11 is positioned at steel cylinder I 14, and the center line of rotor I 11 overlaps with the center line of steel cylinder I 14; Described stator I 12 is nested with in rotor I 11; The output of described rotor I 11 be not in the mood for jig 4 and be connected; Said structure is the existing structure of prior art, at this, does not do too much explanation; Described workpiece spindle adopts the air bearing electric main-shaft being supported by air bearing I 15 and thrust bearing I 13; Described air bearing I 15 is nested with in rotor I 11, and and rotor I 11 between there is gap, form rotor I in the suspension support structure of radial direction, in the radial direction rotor I is being formed to suspension bearing, in the position that makes in the radial direction rotor I, keep motionless; In order to rotor I is carried out to the described thrust bearing 13 of axial support, be arranged on the output of rotor I.
Described workpiece spindle I is provided with compressed air air admission hole I and compressed air air flue I 33; Described compressed air air flue I 33 is communicated with compressed air air admission hole I; Described compressed air air admission hole I is positioned on the bonnet 16 of steel cylinder I rear end, and described compressed air air flue I 33 forms on the barrel of steel cylinder I 14; Between described air bearing I 15 and steel cylinder I 14, there is gap, in described air bearing I 15, there is the radial hole being communicated with compressed air air flue I 18, described radial hole in air bearing I 15 is some row of arranging vertically, and the radial hole described in every row is a plurality of along air bearing I circumference uniform distribution; Described radial hole in air bearing I 15 is communicated with the gap between air bearing I 15 and rotor I 11; In described steel cylinder I, be also provided with in order to rotor I and stator I are carried out to cooling cooling water cavity 17.
As shown in Figure 3, described grinding wheel spindle includes steel cylinder II 21, rotor II 18 and stator II 19; Described rotor II 18 is positioned at steel cylinder II 21, and the center line of rotor II 18 overlaps with the center line of steel cylinder II 21, and the front end of described rotor II 18, as output, is installed emery wheel 25 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 22; Described radial air bearing is two that front and back arrange: front air bearing 20-2 and rear air bearing 20-1; Described front air bearing 20-2 and rear air bearing 20-1 are all nested with in rotor II 18, and and rotor II 18 between there is gap, form rotor II 18 in the suspension support structure of radial direction; Described stator II 19, between front air bearing and 20-2, rear air bearing 20-1, and is nested with in described rotor II 18; Between described stator II 19 and steel cylinder II 21, there is gap; The gap having between stator II 19 and steel cylinder II 21 is communicated with the gap between two air bearing and rotor; Described grinding wheel spindle has compressed air air admission hole II and compressed air air flue II 34; Described compressed air air admission hole II is positioned in steel cylinder II 21; Described compressed air air flue II 34 consists of the gap between rotor II 18 and rear air bearing 20-1; Described compressed air air flue II 34 and rotor II 18 and the rear air bearing 20-1 gap between is radially communicated with.
In order to rotor is carried out to the described arrangement of axial air bearings 22 of axial support, be arranged on the rear end of rotor II 18; Described arrangement of axial air bearings 22 acts on rotor II 18 by pressure plare I 23, and described arrangement of axial air bearings 22 is sealed by end cap 24; On described end cap 24, have with thinking that arrangement of axial air bearings 22 provides compressed-air actuated compressed air air admission hole III; And there is the compressed air air flue III being communicated with compressed air air admission hole III; In described arrangement of axial air bearings 22, all there is the air cavity being communicated with compressed air air flue III between arrangement of axial air bearings 22 and pressure plare I 23.In this embodiment, described arrangement of axial air bearings 22 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 III; Be arranged on the cavity that the pressure plare I 23 between described arrangement of axial air bearings 22 and rotor II 18 has, form the air cavity being communicated with compressed air air flue III, between described pressure plare I 23 and rotor II 18, there is gap, form the suspension support structure axial to rotor II 18.
Described rotor Ⅱ18 center has to dismantle the compressed air air flue IV of emery wheel, and described compressed air air flue IV is communicated with compressed air gas source by compressed air air admission hole IV.
As shown in Figure 4, the supporting construction of the rotating shaft of described dresser includes air bearing II 27, steel cylinder III 28 and in order to countershaft, carries out the thrust bearing II 29 of axial support; Described air bearing II 27 is nested with in rotating shaft 26, and and rotating shaft 26 between there is gap, be formed in the structure that radial direction countershaft carries out suspension support; Described steel cylinder III 28 is coated on the outside of air bearing II 27, and has gap between steel cylinder III 28 and air bearing II 27; Described thrust bearing II 29 is nested with the one end at the nearly servomotor of air bearing; One end at steel cylinder III 28 nearly servomotors is provided with dust cap 31; Between described thrust bearing II 29 and dust cap 31, be provided with pressure plare II 30.
The supporting construction of described rotating shaft is provided with compressed air air admission hole V and compressed air air flue V; Described compressed air air admission hole V is positioned on dust cap 22, and described compressed air air flue V is positioned on pressure plare 21, thrust bearing II 29 and distance collar 32, and is communicated with compressed air air admission hole V; Described compressed air air flue V is communicated with the gap between air bearing II 27 and steel cylinder III 28; In described air bearing II 27, having radial hole and radial hole is communicated with the gap between steel cylinder III 28 with air bearing II 27, described radial hole in air bearing II 27 is some row of arranging vertically, and the radial hole described in every row is a plurality of along air bearing II 27 circumference uniform distributions; Described radial hole in air bearing II 27 is communicated with the gap between air bearing II 27 and rotating shaft 26.
Claims (6)
1. a groove grinder, described 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); Described workpiece spindle (3) includes steel cylinder I (14), rotor I (11) and stator I (12); Described rotor I (11) output clamps the bearing ring of required processing by centerless fixture; Described grinding wheel spindle (7) includes steel cylinder II (21), rotor II (18) and stator II (19); The front end of described rotor II (18) is as output, at the output of rotor II (18), is provided with in order to bearing ring is carried out to the emery wheel (25) of grinding; It is upper that described workpiece spindle (3) and wheel dresser are fixed on line slideway I (2), and described line slideway I (2) can be in the upper motion of the radial direction along workpiece spindle (3) of lathe bed (1); It is upper that described grinding wheel spindle (7) is fixed on line slideway II (8), and described line slideway II (8) can be in the upper motion of the axial direction along workpiece spindle (3) of lathe bed (1); Described wheel dresser is in order to repair emery wheel; Described wheel truing device includes trimmer (5), drives servomotor and the diamond pen in order to emery wheel is revised of trimmer (5) action; Described trimmer (5) includes the supporting construction of rotating shaft (26) and rotating shaft; It is characterized in that:
Described workpiece spindle (3) adopts the air bearing electric main-shaft being supported by air bearing I (13) and thrust bearing I (15); Described air bearing I (13) is nested with in rotor I (11) upper, and and rotor I (11) between there is gap, form rotor I (11) in the suspension support structure of radial direction; In order to rotor I (11) is carried out to the described thrust bearing I (15) of axial support, be arranged on the output of rotor I (11);
Described grinding wheel spindle adopts the air bearing electric main-shaft being supported by radial air bearing and arrangement of axial air bearings (22); Described radial air bearing is nested with in rotor II (18) upper, and and rotor II (18) between there is gap, form rotor II (18) in radial direction the suspension support structure by air bearings support; Described stator II (19) is nested with in described rotor II (18) upper, between described stator II (19) and steel cylinder II (21), has gap; Gap described between stator II (19) and steel cylinder II (21) is communicated with the gap between radial air bearing and rotor II (18); In order to rotor II (18) is carried out to the described arrangement of axial air bearings (22) of axial support, be arranged on the rear end of rotor II (18);
Described trimmer includes the supporting construction of rotating shaft (26) and rotating shaft; The supporting construction of described rotating shaft includes air bearing II (27), steel cylinder III (28) and in order to countershaft, carries out the thrust bearing II (29) of axial support; Described air bearing II (27) is nested with in rotating shaft (26) upper, and and rotating shaft (26) between there is gap, be formed in the structure that radial direction countershaft carries out suspension support; Described steel cylinder III (28) is coated on the outside of air bearing II (27), and has gap between steel cylinder III (28) and air bearing II (27); Described thrust bearing II (29) is nested with the one end at the nearly servomotor of air bearing II (27).
2. groove grinder according to claim 1, is characterized in that: described workpiece spindle (3) is provided with compressed air air admission hole I and compressed air air flue I (33); Described compressed air air flue I (33) is communicated with compressed air air admission hole I; Between described air bearing I (13) and steel cylinder I (14), there is gap, described air bearing I (13) has the radial hole being communicated with compressed air air flue I (33), some row that described radial hole in air bearing I (13) is axially-aligned, the radial hole described in every row is a plurality of along air bearing I (13) circumference uniform distribution; The described radial hole of air bearing I (13) is communicated with the gap between air bearing I (13) and rotor I (11).
3. 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 (20-1) and rear air bearing (20-2); Described stator II (19) is positioned between front air bearing (20-1) and rear air bearing (20-2); Gap described between stator II (19) and steel cylinder II (21) is communicated with the gap between front air bearing (20-1), rear air bearing (20-2) and rotor II (18).
4. groove grinder according to claim 1, is characterized in that: described grinding wheel spindle (7) has compressed air air admission hole and compressed air air flue; Described compressed air air flue includes the compressed air air flue II (34) that is communicated with gap between radial air bearing and rotor II (18), for arrangement of axial air bearings provides compressed-air actuated compressed air air flue III.
5. groove grinder according to claim 1, is characterized in that: the center of described rotor II (18) has to dismantle the compressed air air flue IV of emery wheel, and described compressed air air flue IV is communicated with compressed air gas source by compressed air air admission hole IV.
6. groove grinder according to claim 1, is characterized in that: the supporting construction of the rotating shaft of described trimmer is provided with compressed air air admission hole V and compressed air air flue V, and described compressed air air flue V is communicated with compressed air air admission hole V; Described compressed air air flue V is communicated with the gap between air bearing II (27) and steel cylinder III (28); In described air bearing II (27), there is the radial hole that is communicated with gap between air bearing II (27) and steel cylinder III (28), described radial hole in air bearing II (27) is some row of arranging vertically, and the radial hole described in every row is a plurality of along air bearing II (27) circumference uniform distribution; Described radial hole in air bearing II (27) is communicated with the gap between air bearing II (27) and rotating shaft (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320667529.XU CN203557240U (en) | 2013-10-28 | 2013-10-28 | Groove grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320667529.XU CN203557240U (en) | 2013-10-28 | 2013-10-28 | Groove grinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203557240U true CN203557240U (en) | 2014-04-23 |
Family
ID=50506989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320667529.XU Expired - Lifetime CN203557240U (en) | 2013-10-28 | 2013-10-28 | Groove grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203557240U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215384A (en) * | 2015-07-31 | 2016-01-06 | 四川省兴旺达精密机电有限公司 | A kind of ultrahigh speed air bearing motor for minute surface Digit Control Machine Tool |
-
2013
- 2013-10-28 CN CN201320667529.XU patent/CN203557240U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215384A (en) * | 2015-07-31 | 2016-01-06 | 四川省兴旺达精密机电有限公司 | A kind of ultrahigh speed air bearing motor for minute surface Digit Control Machine Tool |
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Granted publication date: 20140423 |