CN204603318U - A kind of air-bearing and the high electronoptical main axis of air supporting high speed - Google Patents
A kind of air-bearing and the high electronoptical main axis of air supporting high speed Download PDFInfo
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- CN204603318U CN204603318U CN201520085949.6U CN201520085949U CN204603318U CN 204603318 U CN204603318 U CN 204603318U CN 201520085949 U CN201520085949 U CN 201520085949U CN 204603318 U CN204603318 U CN 204603318U
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Abstract
A kind of air-bearing and the high electronoptical main axis of air supporting high speed, relate to the electro spindle of machining.A kind of air-bearing, inwall in bearing main body rear and front end to be shaped with in front end annular connectivity slot in annular connectivity slot and rear end respectively, in front end, the position of annular connectivity slot is corresponding with the inner of front end radial nozzles and be communicated with from the inner by front end radial nozzles, in rear end, the position of annular connectivity slot is corresponding with the inner of rear end radial nozzles and be communicated with from the inner by rear end radial nozzles, to increase radial heavy burden; The water route annular groove that heat extraction cools has been shaped with between the annular connectivity slot of the front end ring shape connectivity slot on bearing main body outer wall and rear end.The high electronoptical main axis of air supporting high speed, comprises axis body, front air-bearing, rear air-bearing, stator, rotor, thrust bearing, push rod, water route/gas circuit assembly and cylinder assembly.The rotating speed of the utility model electro spindle more than 80,000rpm, thus meets the milling rotation speed requirements of high electronoptical main axis, and then ensure that surface brightness and the flatness of converted products.
Description
Technical field
The utility model relates to the electro spindle of machining, espespecially a kind of air-bearing and the high electronoptical main axis of air supporting high speed.High electronoptical main axis described in the application, refers to carry out under high-speed rotation the electro spindle that high fine mill is cut, and can form high brightness and high flatness at processed component surface.
Background technology
The high electronoptical main axis of tradition is the high electronoptical main axis adopting ball bearing, and often occur the not good equally accurate problem of bigger than normal, the dynamic beat of vibration, this is caused by the feature of ball bearing self.Although adopt its radial heavy burden of the high electronoptical main axis of ball bearing better, ball bearing is taked the form of contact rolling friction to lubricate, and can increase vibratory output, also just improves the runout value of dynamic beat accordingly, and this also will affect the machining accuracy of main shaft.Another weak point of the high electronoptical main axis of ball bearing is adopted to be difficult to exactly reach more than 60, the better high light milling effect of 000rpm, be subject to the bottleneck restriction of its ball bearing lubrication form, its rotating speed is generally limited to 40,000-60, between 000rpm, the high light processing effect of this range of speeds is unsatisfactory.
Constantly perfect along with air-flotation electric spindle, its purposes is more and more wider, is particularly applied to Digit Control Machine Tool, carries out processing process various zero.Air-flotation electric spindle utilizes high velocity air to form air film between rotating shaft and bearing, and realizes rotating shaft high-speed rotation as lubrication.It has the advantages such as viscosity is little, high temperature resistant, pollution-free.The aerostatic bearing height electronoptical main axis height of air supporting lubrication is adopted also to come out.
But, often there is radial not enough problem of bearing a heavy burden in existing aerostatic bearing height electronoptical main axis, this is because the self structure of current aerostatic bearing determines, this type of electro spindle rotor assembly diameter becomes bottleneck problem, by the requirement of electro spindle high workload rotating speed, and the restriction of the endoporus, stator power etc. of high Photomechanical equipment assembling main shaft, therefore main axle structure to meet large-diameter rotor design condition.Current aerostatic bearing cannot accomplish that enough large radial direction is born a heavy burden, directly cause high light main shaft in milling operation process, occur the seriousness problem that trueness error is larger, cannot realize being not less than 75 at rotating speed, steady operation in 000rpm situation, and only have rotating speed to be not less than 75, in 000rpm situation, aerostatic bearing height electronoptical main axis processing effect just meets current technical requirement, and the component surface processed forms high brightness and high flatness.
Summary of the invention
The utility model technical issues that need to address are, overcome existing aerostatic bearing height electronoptical main axis and often occur radial not enough problem of bearing a heavy burden, provide a kind of air-bearing and the high electronoptical main axis of air supporting high speed.This air-bearing has enough large radial direction and bears a heavy burden, the high electronoptical main axis of air supporting high speed of this air-bearing is used directly to cause high light main shaft to be not less than 75 at rotating speed, in the milling operation process of 000rpm, precision is high, and the component surface processed can form high brightness and high flatness.
In order to realize above-mentioned task, a kind of air-bearing of the utility model and the high electronoptical main axis of air supporting high speed adopt following technical proposals.
A kind of air-bearing, comprise cylindrical shape and the bottomless bearing main body in two ends, equipped front end radial nozzles and rear end radial nozzles respectively in the rear and front end of bearing main body, front end radial nozzles and rear end radial nozzles are disposed radially and form interior outer end, outer end is near outer wall, inner near inwall;
Outer wall in bearing main body rear and front end is shaped with front end annular connectivity slot and rear end annular connectivity slot respectively, the position of front end annular connectivity slot is corresponding with the outer end of front end radial nozzles and be communicated with from outer end by front end radial nozzles, and the position of the annular connectivity slot in rear end is corresponding with the outer end of rear end radial nozzles and be communicated with from from outer end by rear end radial nozzles;
Sealing ring is installed respectively in the side, front and back of front end annular connectivity slot and rear end annular connectivity slot, causes front end annular connectivity slot and rear end annular connectivity slot to be sealed vertically respectively;
Inwall in bearing main body rear and front end to be shaped with in front end annular connectivity slot in annular connectivity slot and rear end respectively, in front end, the position of annular connectivity slot is corresponding with the inner of front end radial nozzles and be communicated with from the inner by front end radial nozzles, in rear end, the position of annular connectivity slot is corresponding with the inner of rear end radial nozzles and be communicated with from the inner by rear end radial nozzles, to increase radial heavy burden;
The water route annular groove that heat extraction cools has been shaped with between the annular connectivity slot of the front end ring shape connectivity slot on bearing main body outer wall and rear end.
The high electronoptical main axis of air supporting high speed, comprise axis body, front air-bearing, rear air-bearing, stator, rotor, thrust bearing, push rod, water route/gas circuit assembly and cylinder assembly, axis body is tubular, installed thrust bearing, front air-bearing, stator and rear air-bearing successively from front to back in axis body, rotor is arranged in thrust bearing, front air-bearing, stator and rear air-bearing; Water route/gas circuit assembly is fitted to the rear end of axis body, and cylinder assembly is fitted to the rear end of water route/gas circuit assembly, and push rod to be sheathed on vertically in rotor and to be equipped with water route/gas circuit assembly and cylinder assembly; Front air-bearing and rear air-bearing are respectively described a kind of air-bearing.
As the further elaboration of air supporting high speed high electronoptical main axis technical scheme, axis body comprises axis body overcoat and axis body inner bag, axis body inner bag is sheathed in axis body overcoat, and the outer wall of axis body inner bag is shaped with the water route groove of Cooling Water circulation, and the two ends of water route groove are equipped with water route groove sealing ring; The water route annular groove of front air-bearing and the water route annular groove of rear air-bearing are connected with water route groove respectively.
As the further elaboration of air supporting high speed high electronoptical main axis technical scheme, in axis body inner bag, be shaped with axial gas circuit main channel vertically; Front air-bearing and rear air-bearing front end annular connectivity slot separately is all communicated with the axial gas circuit main channel in axis body inner bag with rear end annular connectivity slot.
As the further elaboration of air supporting high speed high electronoptical main axis technical scheme, stator comprises stator overcoat, stator matrix and wire winding, stator overcoat and stator matrix are cylinder-shaped, and stator overcoat cover is wrapped in outside stator matrix, wire winding insulation be configured in stator base shaft to two ends.
As the further elaboration of air supporting high speed high electronoptical main axis technical scheme, rotor comprises rotor matrix, armature spindle core, rotor cylinder sleeve, chuck, chuck edge bar and ring type shell fragment, rotor matrix is cylinder-shaped and front end is shaped with rotor flying disc, chuck is located at rotor matrix foremost, an axial step space is shaped with in rotor matrix front end, successively ring type shell fragment and armature spindle core are installed from front to back in this ladder space, the sheathed rotor cylinder cover of inwall of the rotor matrix relative with the outer wall of armature spindle core, chuck edge bar spins with armature spindle core vertically.
As the further elaboration of air supporting high speed high electronoptical main axis technical scheme, thrust bearing is tubular and two ends are bottomless, thrust bearing is positioned at the leading flank of rotor flying disc, between front air-bearing and the front and back of thrust bearing and away from the position at its center, arrange thrust clearance ring, thrust clearance ring is that accommodating rotor flying disc defines accommodation space between front air-bearing and the front and back of thrust bearing; Thrust bearing be shaped with radial nozzles and be communicated with the path to form gas air supporting thrust bearing with the axial gas circuit main channel of axis body inner bag, thrust bearing also configuring axial nozzle and spray to rotor flying disc from the leading flank of rotor flying disc, make the air supporting of rotor flying disc.
As the further elaboration of air supporting high speed high electronoptical main axis technical scheme, front air-bearing is provided with ring flange end face nozzle vertically, and the front end of ring flange end face nozzle sprays to the trailing flank of rotor flying disc, makes the air supporting of rotor flying disc.
As the further elaboration of air supporting high speed high electronoptical main axis technical scheme, water route/gas circuit assembly comprises body and mold insert, and the front end of body and rear end are respectively the accommodation space be equipped with rear air-bearing and cylinder assembly, and mold insert has axial hole and passes to allow rod member; Body rear end also arranges air chamber, air chamber is communicated with the axial air feed channel that the cylinder body of cylinder assembly is arranged by airway, air chamber is also communicated with front air-bearing, rear air-bearing and thrust bearing by an aspirated joint, and air-bearing, rear air-bearing and thrust bearing are supplied gas forward; Gas after work is recovered to air chamber, and filters through the exhaust outlet that is communicated with air chamber and discharge outside axis body; Body also configures cooling water water supply connector and cooling water water out adapter, cooling water water supply connector and cooling water water out adapter are connected with the water route groove on axis body inner bag respectively, cooling water flows to from cooling water water supply connector, through water route concentrated flow premenstrual air-bearing water route annular groove and after air-bearing water route annular groove, discharge from cooling water water out adapter.
As the further elaboration of air supporting high speed high electronoptical main axis technical scheme, cylinder assembly comprises cylinder body and power plate, and the front end of cylinder body and water route/gas circuit assembly are equipped with, and the rear end cap of cylinder body establishes bonnet; Be provided with multilayer insulating panel in cylinder body to form multiple folded cylinder room of establishing, each cylinder room arranges power plate, and dividing plate, power plate and bonnet be arranged in parallel; The rear end of power plate and push rod is fixedly mounted with and moves forward and backward, to form piston in combination with push rod; Cylinder body is arranged axial air feed channel, each cylinder room is shaped with radial direction and supplies gas inclined hole, and radial direction inclined hole of supplying gas is communicated with the axial air feed channel that cylinder body is arranged; Bonnet also configures inlet suction port;
Cylinder assembly is equipped return spring also, and return spring is set in push rod and arranges vertically.
Compared with the existing technology, the beneficial effects of the utility model are:
1, lubricated by aerostatic bearing during utility model works and realize contactless lubrication, ensure that the rotating speed of electro spindle can more than 80,000rpm, thus the milling rotation speed requirements meeting high electronoptical main axis, and then ensure that surface brightness and the flatness of converted products.
2, due to the aerostatic bearing technology of the utility model employing, run up under non-contacting lubricating condition, the vibration of electro spindle, the dynamically contour fast dynamic property of beat obtain guarantee, this main electric axis under test conditions at present, the vibration≤0.5mm/s of 100,000rpm, dynamic beat≤5 μm, better can ensure machining accuracy in high light processing operation, improve working (machining) efficiency simultaneously, reduce cost.
3, aerostatic bearing is not so good as ball-type electro spindle in radial load theoretically, but the inwall of the utility model in bearing main body rear and front end to be shaped with in front end annular connectivity slot in annular connectivity slot and rear end respectively, in front end, the position of annular connectivity slot is corresponding with the inner of front end radial nozzles and be communicated with from the inner by front end radial nozzles, in rear end, the position of annular connectivity slot is corresponding with the inner of rear end radial nozzles and be communicated with from the inner by rear end radial nozzles, namely adds side loads annular gas tank.This structure has increased substantially the radial load of electro spindle, the radial load of this kind of aerostatic bearing can reach more than 10kgf, be enough to the high-speed milling job requirements meeting high light main shaft, overcome the bottleneck that the heavy burden of aerostatic bearing radial direction is not enough to a certain extent, achieve very good load effect.
Accompanying drawing explanation
Fig. 1 is a kind of air-bearing sectional structure chart of the utility model;
Fig. 2 is the utility model electro spindle sectional structure chart;
Fig. 3 is air-bearing sectional structure chart before the utility model electro spindle;
Fig. 4 is the water route/gas circuit assembly sectional structure chart of the utility model electro spindle;
Fig. 5 is the water route/gas circuit components side view of the utility model electro spindle;
Fig. 6 is the body sections structure chart of the utility model electro spindle;
Fig. 7 is the axis body inner bag side view of the utility model electro spindle;
Fig. 8 is the stator sectional structure chart of the utility model electro spindle;
Fig. 9 is the rotor front end sectional structure chart of the utility model electro spindle;
Figure 10 is the cylinder assembly sectional structure chart of the utility model electro spindle;
Figure 11 is thrust bearing and the electro spindle front end sectional structure chart of the utility model electro spindle.
In figure: 1, axis body; 11, axis body inner bag; 12, axis body overcoat; 13, water route groove; 14, water route groove sealing ring; 15, axial gas circuit main channel;
2, front air-bearing; 20, an air-bearing, 21, bearing main body; 22, front end radial nozzles; 23, rear end radial nozzles; 24, front end annular connectivity slot; 25, rear end annular connectivity slot; 26, annular connectivity slot in front end; 27, annular connectivity slot in rear end; 28, sealing ring; 29, water route annular groove; 201, ring flange end face thrust nozzle;
3, thrust bearing; 32, radial nozzles; 33, axial nozzle; 34, gas circuit sealing ring; 35, gas circuit sealing ring; 36, screw is blocked; 37, holding screw; 38, dust cover; 39, dust ring;
4, thrust clearance ring;
5, rotor; 51, rotor matrix; 52, armature spindle core; 53, rotor cylinder sleeve; 54, chuck; 55, chuck edge bar; 56, ring type shell fragment; 57, rotor flying disc;
6, stator; 61, stator overcoat; 62, stator matrix; 63, front end wire winding; 64, rear end wire winding; 65, insulation board; 66, terminal;
7, rear air-bearing;
8, water route/gas circuit assembly; 81, body; 82, mold insert; 83, air chamber; 84, airway; 85, aspirated joint; 86, exhaust outlet; 87, cooling water water supply connector; 88, cooling water water out adapter;
9, cylinder assembly; 91, cylinder body; 92, power plate; 93, bonnet; 94, dividing plate; 95, axial air feed channel; 96, radial direction is supplied gas inclined hole; 97, inlet suction port; 98, power plate gasket ring; 99, sealing ring; 100, sealing ring; 101, sealing ring; 102, radial power hole; 103, attaching nut; 104, screw; 105, push rod endoporus; 106; Sealing ring;
10, return spring; 107, push rod.
Detailed description of the invention
Detailed description of the invention of the present utility model is introduced below in conjunction with accompanying drawing.
Before concrete introduction, to before and after once illustrating of mentioning in technical scheme and embodiment, install one end of chuck for front end with rotor, the one end of installing chuck away from rotor is rear end, and front and back are as reference.
As shown in Figure 1, a kind of air-bearing 20, comprise cylindrical shape and the bottomless bearing main body 21 in two ends, front end radial nozzles 22 and rear end radial nozzles 23 is equipped with respectively in the rear and front end of bearing main body 21, front end radial nozzles 22 and rear end radial nozzles 23 are disposed radially and form interior outer end, outer end is near outer wall, inner near inwall;
Front end annular connectivity slot 24 and rear end annular connectivity slot 25 is shaped with respectively at the outer wall of bearing main body 21 rear and front end, the position of front end annular connectivity slot 24 is corresponding with the outer end of front end radial nozzles 22 and be communicated with from outer end by front end radial nozzles 22, and the position of the annular connectivity slot 25 in rear end is corresponding with the outer end of rear end radial nozzles 23 and be communicated with from from outer end by rear end radial nozzles 23;
The side, front and back of front end annular connectivity slot 24 and rear end annular connectivity slot 25 installs sealing ring 28 respectively, causes front end annular connectivity slot 24 and rear end annular connectivity slot 25 to be sealed vertically respectively;
Annular connectivity slot 27 in annular connectivity slot 26 and rear end is shaped with in front end respectively at the inwall of bearing main body 21 rear and front end, in front end, the position of annular connectivity slot 26 is corresponding with the inner of front end radial nozzles 22 and be communicated with from the inner by front end radial nozzles 22, in rear end, the position of annular connectivity slot 27 is corresponding with the inner of rear end radial nozzles 23 and be communicated with from the inner by rear end radial nozzles 23, to increase radial heavy burden;
The water route annular groove 29 that heat extraction cools has been shaped with between the annular connectivity slot 25 of the front end ring shape connectivity slot 24 on bearing main body 21 outer wall and rear end.
As shown in Figure 2, the high electronoptical main axis of air supporting high speed, comprise axis body 1, front air-bearing 2, rear air-bearing 7, stator 6, rotor 5, thrust bearing 3, push rod 107, water route/gas circuit assembly 8 and cylinder assembly 9, axis body 1 is in tubular, installed thrust bearing 3, front air-bearing 2, stator 6 and rear air-bearing 7 successively from front to back in axis body 1, rotor 5 is arranged in thrust bearing 3, front air-bearing 2, stator 6 and rear air-bearing 7; Water route/gas circuit assembly 8 is fitted to the rear end of axis body 1, and cylinder assembly 9 is fitted to the rear end of water route/gas circuit assembly 8, and push rod 107 to be sheathed on vertically in rotor 5 and to be equipped with water route/gas circuit assembly 8 and cylinder assembly 9; Front air-bearing 2 and a kind of air-bearing 20 described in rear air-bearing 7 difference.
As shown in FIG. 6 and 7, axis body 1 comprises axis body overcoat 12 and axis body inner bag 11, and axis body inner bag 11 is sheathed in axis body overcoat 12, and the outer wall of axis body inner bag 11 is shaped with the water route groove 13 of Cooling Water circulation, and the two ends of water route groove 13 are equipped with water route groove sealing ring 14; The water route annular groove 29 of front air-bearing 2 and the water route annular groove 29 of rear air-bearing 7 are connected with water route groove 13 respectively.
As shown in Figure 2, axial gas circuit main channel 15 is shaped with in axis body inner bag 11 vertically; Front air-bearing 2 and respective front end annular connectivity slot 24 and the rear end annular connectivity slot of rear air-bearing 7 all 25 to be communicated with the axial gas circuit main channel in axis body inner bag 11.
As shown in Figure 8, stator 6 comprises stator overcoat 61, stator matrix 62 and wire winding (comprising front end wire winding 63 and rear end wire winding 64), stator overcoat 61 and stator matrix 62 are in cylinder-shaped, stator overcoat 61 cover is wrapped in outside stator matrix 62, and wire winding (comprising front end wire winding 63 and rear end wire winding 64) passes through insulating trip 65 insulation configuration of configuration at the two ends of stator matrix 62 axis.Wire winding terminal 66 conduction connects three-phase alternating-current supply.
As shown in Figure 9, rotor 5 comprises rotor matrix 51, armature spindle core 52, rotor cylinder sleeve 53, chuck 54, chuck edge bar 55 and ring type shell fragment 56, rotor matrix 51 is cylinder-shaped and front end is shaped with rotor flying disc 57, chuck 54 is located at rotor matrix 51 foremost, an axial step space is shaped with in rotor matrix 51 front end, successively ring type shell fragment 56 and armature spindle core 52 are installed from front to back in this ladder space, the sheathed rotor cylinder of inwall of the rotor matrix 51 relative with the outer wall of armature spindle core 52 overlaps 53, and chuck edge bar 55 spins with armature spindle core 52 vertically.
As shown in figure 11, thrust bearing 3 is in tubular and two ends are bottomless, thrust bearing 3 is positioned at the leading flank of rotor flying disc 57, between front air-bearing 2 and the front and back of thrust bearing 3 and away from the position at its center, arrange thrust clearance ring 4, thrust clearance ring 4 is that accommodating rotor flying disc 57 defines accommodation space between front air-bearing 2 and the front and back of thrust bearing 3; Thrust bearing 3 is shaped with radial nozzles 32 and connects 15 with the axial gas circuit main channel of axis body inner bag and pass to the path forming gas air supporting thrust bearing 3, thrust bearing 3 also configures axial nozzle 33 and spray to rotor flying disc 57 from the leading flank of rotor flying disc 57, make rotor flying disc 57 air supporting.Equipped gas circuit sealing ring 34, gas circuit sealing ring 35 and blocking screw 36 prevent gas leak.By holding screw 37, by thrust clearance ring 4 and front air-bearing 2 fastening.The dust cover of configuration foremost 38 of thrust bearing 3, thrust bearing 3 and dust cover 38 are equipped with dust ring 39 with the position of rotor contact.
As shown in Figure 3, front air-bearing 2 is provided with ring flange end face nozzle 201 vertically, and the front end of ring flange end face nozzle 201 sprays to the trailing flank of rotor flying disc 57, makes rotor flying disc 57 air supporting.
As shown in Figures 4 and 5, water route/gas circuit assembly comprises body 81 and mold insert 82, and the front end of body 81 and rear end are respectively the accommodation space be equipped with rear air-bearing 7 and cylinder assembly 9, and mold insert 82 has axial hole and passes to allow rod member 107; Body 81 rear end also arranges air chamber 83, air chamber 83 is communicated with the axial air feed channel 95 that the cylinder body 91 of cylinder assembly 9 is arranged by airway 84, air chamber 83 is also communicated with front air-bearing 2, rear air-bearing 7 and thrust bearing 3 (by axial gas circuit main channel 15) by an aspirated joint 85, and air-bearing, rear air-bearing and thrust bearing are supplied gas forward; Gas after work is recovered to air chamber 83, and filters through the exhaust outlet 86 that is communicated with air chamber 83 and discharge outside axis body 1; Body 81 also configures cooling water water supply connector 87 and cooling water water out adapter 88, cooling water water supply connector 87 and cooling water water out adapter 88 are connected with the water route groove 13 on axis body inner bag 11 respectively, cooling water flows to from cooling water water supply connector 87, through water route groove 13 flow through front air-bearing 2 water route annular groove 29 and after air-bearing 7 water route annular groove 29, discharge from cooling water water out adapter 88.
As shown in Figure 10, cylinder assembly 9 comprises cylinder body 91 and power plate 92, and the body 81 of the front end of cylinder body 91 and water route/gas circuit assembly 8 is equipped with, and the rear end cap of cylinder body 91 establishes bonnet 93; Be provided with multilayer insulating panel 94 in cylinder body 91 to form multiple folded cylinder room of establishing, each cylinder room arranges power plate 92, and dividing plate 94, power plate 92 and bonnet 93 be arranged in parallel; Power plate 92 and the rear end of push rod 107 are fixedly mounted with and move forward and backward, to form piston in combination with push rod; Cylinder body 91 is arranged axial air feed channel 95, each cylinder room is shaped with radial direction and supplies gas inclined hole 96, and radial direction inclined hole 96 of supplying gas is communicated with the axial air feed channel 95 that cylinder body 91 is arranged; Bonnet 93 also configures inlet suction port 97, and gas is from push rod endoporus 105 and sent into the cylinder room of cylinder by radial power hole 102; Equipped power plate gasket ring 98, power plate gasket ring 98 and power plate 92 are fixedly mounted with, and power plate gasket ring 98 passes from the center of dividing plate 94; Sealing ring 100 is equipped with in power plate gasket ring 98 and power plate end, and power plate 92 and dividing plate 94 endoporus are equipped with sealing ring 101, and sealing ring 99 is equipped with at power plate gasket ring 98 and dividing plate 94 endoporus place; Power plate rear end face is provided with an attaching nut 103, is solidly installed with push rod 107, and centre is equipped with sealing ring 106 and is run through whole piston component; Bonnet 93 rear end face is equipped with screw 104 and spins with cylinder body and spin with the body 81 of water route/gas circuit assembly.
Cylinder assembly is equipped return spring also, and return spring is set in push rod and arranges vertically.
During the work of the utility model electro spindle, by water/gas circuit assembly 8 accesses the air of certain pressure, air-bearing 7, front air-bearing 2 and thrust bearing 3 after supply respectively, rotor 5 is made to be in suspended state completely, can not contact with any accessory during rotation, provide satisfactory three-phase alternating-current supply to stator 6, make stator 6 produce asynchronous magnetic field force relative to rotor 5, under the action of a magnetic force, rotor 5 progressively accelerates to working speed.When needing to change the cutter of different size, first stop driving arrangement, after electro spindle shuts down, from the air of cylinder access certain pressure, cylinder orders about push rod 107 and promotes chuck edge bar 55 and move down rear chuck 54 and open, and can carry out tool changing operation.After holding one's breath, return spring 10 makes push rod 107 retreat, and before push rod 107, end face and chuck inlay bar 55 end face certain interval, makes rotor 5 inner ring make shell fragment 56 clamp-on tool again.When rotor 5 high-speed rotation, its main pyrotoxin comprises motor loss heating and rotor 5 produces heat with windage, in order to ensure that electro spindle can be stablized, work reliably, by water/gas circuit assembly 8 accesses cooling water flow to carry out circulation discharge heat to axis body inner bag 12, front air-bearing, rear air-bearing.Carry out controlling just can carry out at a high speed, process operation efficiently if be arranged on automated machine tool, temperature sensor is housed in electro spindle can carry out corresponding feedback protection.
Embodiment of the present utility model just illustrates its detailed description of the invention, does not lie in and limits its technical scheme.The technical staff of the industry can make some amendment under the inspiration of the present embodiment, therefore all equivalences done according to the utility model the scope of the claims change or modify, and all belong within the scope of the utility model Patent right requirement.
Claims (10)
1. an air-bearing, it is characterized in that: comprise cylindrical shape and the bottomless bearing main body in two ends, front end radial nozzles and rear end radial nozzles is equipped with respectively in the rear and front end of bearing main body, front end radial nozzles and rear end radial nozzles are disposed radially and form interior outer end, outer end is near outer wall, inner near inwall;
Outer wall in bearing main body rear and front end is shaped with front end annular connectivity slot and rear end annular connectivity slot respectively, the position of front end annular connectivity slot is corresponding with the outer end of front end radial nozzles and be communicated with from outer end by front end radial nozzles, and the position of the annular connectivity slot in rear end is corresponding with the outer end of rear end radial nozzles and be communicated with from from outer end by rear end radial nozzles;
Sealing ring is installed respectively in the side, front and back of front end annular connectivity slot and rear end annular connectivity slot, causes front end annular connectivity slot and rear end annular connectivity slot to be sealed vertically respectively;
Inwall in bearing main body rear and front end to be shaped with in front end annular connectivity slot in annular connectivity slot and rear end respectively, in front end, the position of annular connectivity slot is corresponding with the inner of front end radial nozzles and be communicated with from the inner by front end radial nozzles, in rear end, the position of annular connectivity slot is corresponding with the inner of rear end radial nozzles and be communicated with from the inner by rear end radial nozzles, to increase radial heavy burden;
The water route annular groove that heat extraction cools has been shaped with between the annular connectivity slot of the front end ring shape connectivity slot on bearing main body outer wall and rear end.
2. the high electronoptical main axis of air supporting high speed, it is characterized in that: comprise axis body, front air-bearing, rear air-bearing, stator, rotor, thrust bearing, push rod, water route/gas circuit assembly and cylinder assembly, axis body is tubular, installed thrust bearing, front air-bearing, stator and rear air-bearing successively from front to back in axis body, rotor is arranged in thrust bearing, front air-bearing, stator and rear air-bearing; Water route/gas circuit assembly is fitted to the rear end of axis body, and cylinder assembly is fitted to the rear end of water route/gas circuit assembly, and push rod to be sheathed on vertically in rotor and to be equipped with water route/gas circuit assembly and cylinder assembly; Front air-bearing and rear air-bearing are respectively a kind of air-bearing according to claim 1.
3. the high electronoptical main axis of air supporting high speed according to claim 2, it is characterized in that: axis body comprises axis body overcoat and axis body inner bag, axis body inner bag is sheathed in axis body overcoat, and the outer wall of axis body inner bag is shaped with the water route groove of Cooling Water circulation, and the two ends of water route groove are equipped with water route groove sealing ring; The water route annular groove of front air-bearing and the water route annular groove of rear air-bearing are connected with water route groove respectively.
4. the high electronoptical main axis of air supporting high speed according to claim 3, is characterized in that: be shaped with axial gas circuit main channel in axis body inner bag vertically; Front air-bearing and rear air-bearing front end annular connectivity slot separately is all communicated with the axial gas circuit main channel in axis body inner bag with rear end annular connectivity slot.
5. the high electronoptical main axis of air supporting high speed according to claim 2, it is characterized in that: stator comprises stator overcoat, stator matrix and wire winding, stator overcoat and stator matrix are cylinder-shaped, and stator overcoat cover is wrapped in outside stator matrix, wire winding insulation be configured in stator base shaft to two ends.
6. the high electronoptical main axis of air supporting high speed according to claim 2, it is characterized in that: rotor comprises rotor matrix, armature spindle core, rotor cylinder sleeve, chuck, chuck edge bar and ring type shell fragment, rotor matrix is cylinder-shaped and front end is shaped with rotor flying disc, chuck is located at rotor matrix foremost, an axial step space is shaped with in rotor matrix front end, successively ring type shell fragment and armature spindle core are installed from front to back in this ladder space, the sheathed rotor cylinder cover of inwall of the rotor matrix relative with the outer wall of armature spindle core, chuck edge bar spins with armature spindle core vertically.
7. the high electronoptical main axis of air supporting high speed according to claim 6, it is characterized in that: thrust bearing is tubular and two ends are bottomless, thrust bearing is positioned at the leading flank of rotor flying disc, between front air-bearing and the front and back of thrust bearing and away from the position at its center, arrange thrust clearance ring, thrust clearance ring is that accommodating rotor flying disc defines accommodation space between front air-bearing and the front and back of thrust bearing; Thrust bearing be shaped with radial nozzles and be communicated with the path to form gas air supporting thrust bearing with the axial gas circuit main channel of axis body inner bag, thrust bearing also configuring axial nozzle and spray to rotor flying disc from the leading flank of rotor flying disc, make the air supporting of rotor flying disc.
8. the high electronoptical main axis of air supporting high speed according to claim 6, is characterized in that: front air-bearing is provided with ring flange end face nozzle vertically, the front end of ring flange end face nozzle sprays to the trailing flank of rotor flying disc, makes the air supporting of rotor flying disc.
9. the high electronoptical main axis of air supporting high speed according to claim 2, it is characterized in that: water route/gas circuit assembly comprises body and mold insert, the front end of body and rear end are respectively the accommodation space be equipped with rear air-bearing and cylinder assembly, and mold insert has axial hole and passes to allow rod member; Body rear end also arranges air chamber, air chamber is communicated with the axial air feed channel that the cylinder body of cylinder assembly is arranged by airway, air chamber is also communicated with front air-bearing, rear air-bearing and thrust bearing by an aspirated joint, and air-bearing, rear air-bearing and thrust bearing are supplied gas forward; Gas after work is recovered to air chamber, and filters through the exhaust outlet that is communicated with air chamber and discharge outside axis body; Body also configures cooling water water supply connector and cooling water water out adapter, cooling water water supply connector and cooling water water out adapter are connected with the water route groove on axis body inner bag respectively, cooling water flows to from cooling water water supply connector, through water route concentrated flow premenstrual air-bearing water route annular groove and after air-bearing water route annular groove, discharge from cooling water water out adapter.
10. the high electronoptical main axis of air supporting high speed according to claim 9, is characterized in that: cylinder assembly comprises cylinder body and power plate, and the front end of cylinder body and water route/gas circuit assembly are equipped with, and the rear end cap of cylinder body establishes bonnet; Be provided with multilayer insulating panel in cylinder body to form multiple folded cylinder room of establishing, each cylinder room arranges power plate, and dividing plate, power plate and bonnet be arranged in parallel; The rear end of power plate and push rod is fixedly mounted with and moves forward and backward, to form piston in combination with push rod; Cylinder body is arranged axial air feed channel, each cylinder room is shaped with radial direction and supplies gas inclined hole, and radial direction inclined hole of supplying gas is communicated with the axial air feed channel that cylinder body is arranged; Bonnet also configures inlet suction port;
Cylinder assembly is equipped return spring also, and return spring is set in push rod and arranges vertically.
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| CN201520085949.6U CN204603318U (en) | 2015-02-06 | 2015-02-06 | A kind of air-bearing and the high electronoptical main axis of air supporting high speed |
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| CN104551028A (en) * | 2015-02-06 | 2015-04-29 | 东莞市科隆电机有限公司 | Air floatation bearing and air floatation high-speed high-photoelectric main shaft |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104551028A (en) * | 2015-02-06 | 2015-04-29 | 东莞市科隆电机有限公司 | Air floatation bearing and air floatation high-speed high-photoelectric main shaft |
| CN105195764A (en) * | 2015-10-30 | 2015-12-30 | 苏州陈那自动化技术有限公司 | Self-lubricating self-sealing graphite gas-floatation electrostatic pressure spindle structure |
| CN105195764B (en) * | 2015-10-30 | 2017-06-27 | 苏州陈那自动化技术有限公司 | A kind of self-lubricating self sealss graphite air supporting hydrostatic spindle structure |
| TWI584910B (en) * | 2015-12-02 | 2017-06-01 | X'pole Prec Tools Inc | Machine tool dust blocking structure |
| CN108907839A (en) * | 2018-09-30 | 2018-11-30 | 深圳市兴旺达科技有限公司 | A kind of air-bearing automatic tool changer main shaft |
| CN116667595A (en) * | 2023-08-01 | 2023-08-29 | 浙江晶鸿精密机械制造有限公司 | Motorized spindle and automatic regulating system |
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Effective date of registration: 20171010 Address after: The third floor of Building No. 182 G Kwai 523000 Guangdong province Dongguan City Qing Zhen Qing Huang Village Industrial Zone Patentee after: Dongguan manifest Motor Co., Ltd. Address before: Guangdong province Dongguan City Kwai 523000 Qing emperor Qingxi Town Industrial Zone No. 182 building G Patentee before: DONGGUAN KELONG MOTOR CO., LTD. |
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Address after: 414000 building 27, Zhuoda Jingu entrepreneurship Park, high tech Industrial Development Zone, Jinlong Town, Xiangyin County, Yueyang City, Hunan Province Patentee after: Yueyang Xianlong Motor Co.,Ltd. Address before: 523000 3rd floor, building g, 182 Kwai Tsing Road, Qinghuang Village Industrial Zone, Qingxi Town, Dongguan City, Guangdong Province Patentee before: DONGGUAN XIANLONG MOTOR CO.,LTD. |
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