CN207479617U - Main-shaft box system with automatic chuck - Google Patents
Main-shaft box system with automatic chuck Download PDFInfo
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- CN207479617U CN207479617U CN201721273008.0U CN201721273008U CN207479617U CN 207479617 U CN207479617 U CN 207479617U CN 201721273008 U CN201721273008 U CN 201721273008U CN 207479617 U CN207479617 U CN 207479617U
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Abstract
The utility model discloses a kind of main-shaft box system with automatic chuck, including babinet and main shaft；Further include automatic chuck device, bearing seal system, bearing pre-tightened backlash eliminating equipment and bearing lubrication system.This main-shaft box system, automatic chuck device pass through the direction of rotation for the armature spindle for changing stepper motor by rotating electrical connector to chuck motor power supply, you can realization steps up or loosen workpiece, and clamping workpiece is easy to operate, efficient.And the bearing seal system of this main-shaft box system can play bearing dust-proof protective effect, moreover it is possible to play the role of cooling down to bearing inner race and main shaft, can improve main shaft and bearing inner race rigidity, keep spindle rotation accuracy.And bearing pre-tightened backlash eliminating equipment can eliminate the gap of bearing wear generation automatically so that the rigidity of the first deep groove ball bearing and the second deep groove ball bearing greatly enhances, and the rigidity of raising axis system that can be very big improves spindle rotation accuracy and machine finish.
Description
Technical field
The utility model is related to machine tool technology field, more particularly to a kind of spindle box of numerically-controlled machine tool.
Background technology
Spindle box is the important component of lathe, including babinet, spindle unit etc..Spindle unit is usually by main shaft, axis
It holds and the compositions such as driving member (gear or belt wheel).Main shaft is mainly used to support driving parts such as gear, belt wheel in lathe, transmits
Movement and torque drive workpiece or cutter rotation etc., the numerically-controlled machine tool as high-precision processing, to the quality requirement of spindle unit
It is very high.
Main shaft radial force is big in process for lathe, and axially loaded is relatively small, so the radial direction of supporting spindle
Shaft strength ability is very crucial.In the prior art frequently with deep groove ball bearing supporting spindle, because bearing reason leads to processing essence
The factor that degree reduces mainly has：
1st, there are gaps between the inner ring and outer ring of bearing and steel ball so that when main shaft is by radial load, main-shaft core meeting
Offset is generated, reduces machining accuracy.
2nd, bearing wear causes bearing clearance to increase, and reduces machining accuracy.
3rd, bearing high-speed motion, temperature raising, causes bearing rigidity to reduce, influences machining accuracy.
And the rigidity of main shaft is also an important factor for influencing machine finish.Work in-process, cutting metal can generate greatly
Calorimetric amount, the cutting hot part liquid band that is cooled is walked, and part can pass to main shaft, and main shaft temperature is caused to increase, main shaft heating meeting
Main shaft rigidity is reduced, can also influence machining accuracy.
Existing numerically-controlled machine tool simultaneously, it is typically using manual card to be connected to spindle nose for the chuck of clamping workpiece
Disk, hand chuck there is technical issues that clamping workpiece.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of main-shaft box system with automatic chuck, to solve main shaft
The technical issues of chuck is hand chuck, and clamping workpiece efficiency is low and solution bearing clearance, bearing wear, bearing and main shaft
The technical issues of heating etc. causes machine finish to reduce.
Main-shaft box system of the utility model with automatic chuck, including babinet and main shaft, the main shaft is hollow shaft；It is described
Bearing block is formed on the medial surface of babinet, the front end of the main shaft is installed on the axis of box inside by two deep groove ball bearings
In bearing, the first deep groove ball bearing in described two deep groove ball bearings is in the middle part of babinet, and the second deep groove ball bearing is close to case
External side；The rear end of the main shaft is mounted on by angular contact bearing on babinet, and fixed angular contact bearing is additionally provided on babinet
Main shaft end cap；
The main-shaft box system further includes automatic chuck device, and the automatic chuck device includes being fixed on front-end of spindle
Chuck body, the claw being arranged on chuck body and be arranged in chuck body and with the drive disk of chuck body rotatable engagement, it is described
The guide groove radially extended is provided on chuck body, the claw is arranged in guide groove and is slidably matched with guide groove, institute
Drive disk is stated to connect by end-face helical with claw；The automatic chuck device, which further includes, to be arranged in main shaft and same with drive disk
Mandrel that axis is fixedly connected, the chuck motor being fixed on main shaft end face and the rotating electrical connector that spindle end covers is arranged on,
The armature spindle of the chuck motor is fixedly connected with mandrel, and the rotating electrical connector is connected with chuck motor；
The main-shaft box system further includes bearing seal system, and the bearing seal system includes being bolted in axis
Bearing cap on bearing end face is provided with the annular convex platform being pressed on the first deep groove ball bearing on the bearing cap, bearing cap
Middle part has the shaft sleeve part coordinated with main shaft, is provided in the axle sleeve for first sealing in gap between sealing axle sleeve and main shaft
It encloses, the first end cover for preventing the first sealing ring from coming off is provided on the end face of axle sleeve；Coordinate on the babinet with front-end of spindle
The second sealing ring is provided on axis hole wall, between second sealing ring is for sealing between front-end of spindle and babinet upper shaft hole
Gap is provided with the second end cover for fixing the second sealing ring in casing end face；On the babinet with the inner ring of the second deep groove ball bearing
Third sealing ring is provided on opposite position, between the third sealing ring is used between seal case and 3rd bearing end face
Gap；First sealing ring, the second sealing ring and third sealing ring are v-ring；
The bearing seal system further includes pressurized seal system, the pressurized seal system include air compressor, with
The air purifier of air compressor connection, the air dryer being connect with air purifier, the gas being connect with air dryer
Body vacuum tank, the first pressure regulator valve tank connected with gas voltage stabilizing, the inlet suction port being connect with the first pressure regulator valve, the inlet suction port
If it including ring pipe, is arranged on the suction nozzle connected on ring pipe with the first pressure regulator valve and is evenly arranged on ring pipe
Dry outlet nozzle, the outlet nozzle is mounted on bearing cap, and the inner ring end face face of outlet nozzle and the first deep groove ball bearing；Institute
State and first annular air slot and the second ring-shaped gas-guiding trench be provided on main shaft, first annular air slot close to clutch shaft bearing end face with
Gap between bearing cap, gap of second ring-shaped gas-guiding trench between second bearing end face and babinet；The table of the main shaft
The axial air slot for connecting first annular air slot and the second ring-shaped gas-guiding trench is additionally provided on face, the axial direction air slot edge is main
Axis circumferencial direction is evenly arranged several；
The main-shaft box system with automatic chuck further includes bearing pre-tightened backlash eliminating equipment, the bearing pre-tightened backlash eliminating equipment
Including the spacer ring being arranged between the first deep groove ball bearing and the second deep groove ball bearing, the two sides of the spacer ring are attached to respectively
On the cycle surface of one deep groove ball bearing and the second deep groove ball bearing；The bearing pre-tightened backlash eliminating equipment, which further includes, to be separately positioned on
First deep groove ball bearing and the left permanent magnetism ring body on the second deep groove ball bearing inner ring end face and right permanent magnetism ring body, the left permanent-magnetic clamp
Body and the opposite face of right permanent magnetism ring body are magnetic pole of the same name, and the counterpart of left permanent magnetism ring body and right permanent magnetism ring body is also embedded in same bullet
In property seal ring set；First deep-groove ball and the second deep groove ball bearing inner ring are in the repulsion of left permanent magnetism ring body and right permanent magnetism ring body
It is pressed with force against on steel ball, makes to be in direct contact between outer ring, steel ball and the inner ring three of deep groove ball bearing；
The main-shaft box system with automatic chuck further includes bearing lubrication system, and the bearing lubrication system includes oil
Case, oil filter, oil pump, cooler, the second pressure regulator valve, inlet nozzle and oil outlet, oil inlet and the fuel tank of the oil filter connect
It connects, the oil outlet of oil filter and the oil inlet end of oil pump connect, and the oil outlet end of oil pump and the oil inlet of cooler connect, cooler
Oil outlet is connect with the second pressure regulator valve, and the inlet nozzle is mounted on the top of bearing block, and inlet nozzle is used to lubricating oil being sent into
In bearing, the oil outlet is mounted on the bottom of bearing block, and oil outlet is used to lubricating oil taking back fuel tank；The spacer ring it is upper
Half portion and lower half are respectively arranged with the upper arc oil groove being separated from each other and arc lower oil groove, are additionally provided on spacer ring and radially pass through
The oilhole of spacer ring is worn, the top and bottom of the oilhole are located in upper arc oil groove and arc lower oil groove respectively, the bearing block
On be provided with the oil inlet passage connected with upper arc oil groove and the oil discharge passage connected with arc lower oil groove, the inlet nozzle installation
On oil inlet passage, the oil outlet is mounted on oil discharge passage.
The beneficial effects of the utility model：
1st, main-shaft box system of the utility model with automatic chuck, automatic chuck device is by rotating electrical connector to chuck
Motor is powered, and chuck motor drives driving disc spins, and drive disk rotation forces claw is moved radially along chuck body, is walked by changing
The direction of rotation of the armature spindle of stepper motor, you can realization steps up or loosen workpiece, and clamping workpiece is easy to operate, efficient.
2nd, main-shaft box system of the utility model with automatic chuck, the bearing seal system of setting can draw compressed air
Enter to the gap location between gap location between axle sleeve and main shaft and front-end of spindle and babinet upper shaft hole, when lathe works, compression
The sealing lip of first sealing ring and the second sealing ring is pushed away main shaft, while the sealing lip of third sealing ring is pushed away by the pressure of air
The end face of the second deep groove ball bearing of power so that the frictional resistance of main shaft is reduced, and can extend the service life of sealing ring.And
Compressed air can also prevent environmental contaminants such as dust, steam from entering in bearing；After lathe is shut down, the sealing lip of sealing ring
Rebound is pressed on main shaft, so as to can also prevent dust, cooling water etc. from entering in bearing in the quiescent state；Therefore the bearing seal system
It can extend bearing life to the secondary good protective effect that rub in bearing.
And gap location of the compressed air between air slot axial from main shaft front-end of spindle in the same direction and babinet upper shaft hole
During, the heat that machining can be transmitted to main shaft is taken away, and so as to cool down to main shaft, keeps main shaft rigidity,
Keep machine finish.And usually all it is in the prior art that lubricating oil is imported into bearing to the cooling of bearing, it is this cold
But mode cannot prevent the heat on main shaft from being transmitted to bearing inner race so that bearing inner race temperature is influenced greatly, to work as bearing by main shaft
When inner ring temperature increases, bearing inner race rigidity can reduce, and this leads to the reduction of axis system rigidity, and then reduces machining accuracy.
And the compressed air generated in this bearing seal system, the heat that machining can be transmitted to main shaft are taken away, so as to reduce
Spindle box bearing inner race transmits heat, while the heat that bearing rotary generates also can partly be taken away, therefore bearing by compressed air
Sealing system can not only play bearing dust-proof protective effect, moreover it is possible to cooling down work is played to bearing inner race and main shaft
With can improve main shaft and bearing inner race rigidity, keep spindle rotation accuracy.
3rd, main-shaft box system of the utility model with automatic chuck, the bearing pre-tightened backlash eliminating equipment of setting are deep first
Ditch ball bearing and the second deep groove ball bearing be after installation is complete, the inner ring of the first deep groove ball bearing and the second deep groove ball bearing it is left forever
It is abutted against on steel ball under magnetic ring body and the effect of the repulsive force of right permanent magnetism ring body, so as to bearing outer ring, steel ball and bearing inner race three
Between for intimate contact, and the repulsive force that applies of permanent magnetism ring body can eliminate the gap of bearing wear generation automatically so that first is deep
The rigidity of ditch ball bearing and the second deep groove ball bearing greatly enhances, and the rigidity of raising axis system that can be very big improves main shaft and returns
Turn precision and machine finish.
Lubricating oil is introduced by the 4th, main-shaft box system of the utility model with automatic chuck, the bearing lubrication system of setting
In bearing, and by upper arc oil groove, arc lower oil groove and the oil hole structure on spacer ring and the left magnetic ring body of connection and the right side forever
The elastic sealing ring nested structure of magnetic ring body so that lubricating oil can only flow to bearing lower half from the bearing first half, can be in bearing
Portion carries out good lubrication and cooling, can reduce bearing friction abrasion and reduce bearing temperature, bearing is made to keep superperformance for a long time；
And the oil filter in bearing lubrication system is avoided that lubricating oil brings impurity in bearing into, cooler can be the temperature of lubricating oil
It keeps stablizing, so as to further improve lubrication and cooling of the lubricating oil to Bearing inner, bearing is made to maintain a good state, and then
Keep machine tool system machining accuracy.
Description of the drawings
Fig. 1 is the structure diagram of the main-shaft box system with automatic chuck in embodiment；
Fig. 2 is the enlarged diagram in P portions in Fig. 1；
Fig. 3 is the structure diagram of pressurized seal system；
Fig. 4 is the structure diagram of bearing lubrication system；
Fig. 5 is the structure diagram of spacer ring.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and examples.
As shown in the figure, main-shaft box system of the present embodiment with automatic chuck, including babinet 1 and main shaft 2, during the main shaft is
Empty axis；；Bearing block 3 is formed on the medial surface of the babinet, the front end of the main shaft is installed on by two deep groove ball bearings
On the bearing block of box inside, the first deep groove ball bearing 4 in described two deep groove ball bearings is in the middle part of babinet, the second zanjon
Ball bearing 5 is on the outside of babinet；The rear end of the main shaft is mounted on by angular contact bearing 6 on babinet, is additionally provided on babinet
The main shaft end cap 40 of fixed angular contact bearing.
The main-shaft box system further includes automatic chuck device, and the automatic chuck device includes being fixed on front-end of spindle
Chuck body 41, the claw 42 being arranged on chuck body and be arranged in chuck body and with the drive disk of chuck body rotatable engagement
43, the guide groove radially extended is provided on the chuck body, the claw is arranged in guide groove and is slided with guide groove
Cooperation, the drive disk are connected with claw by end-face helical；The automatic chuck device further include be arranged in main shaft and with
It mandrel 44 that drive disk is fixedly and coaxially connected, the chuck motor 45 being fixed on main shaft end face and is arranged on spindle end and covers
Rotating electrical connector 46, the armature spindle of the chuck motor is fixedly connected with mandrel, and the rotating electrical connector and chuck motor connect
It connects.Chuck motor 45 in the present embodiment is stepper motor, and rotating electrical connector 46 is the mercury ring of model A1H90PS, certainly
Type and the model for selecting electric connection are more, can be selected according to actual needs.
Automatic chuck device in the present embodiment is powered by rotating electrical connector 46 to chuck motor, and chuck motor drives
Disc spins are driven, drive disk rotation forces claw is moved radially along chuck body, the rotation of the armature spindle by changing stepper motor
Direction, you can realization steps up or loosen workpiece, and clamping workpiece is easy to operate, efficient.
Main-shaft box system of the present embodiment with automatic chuck, when the rotation angle for needing control main shaft, to realize main shaft essence
Really during indexing, driving cylinder is first controlled, stepper motor is pushed up by driving cylinder, the active being connect with stepping motor rotating shaft is made to rub
Wipe wheel rise to driven friction pulley compressive contact, then by controlling stepper motor work to realize control Spindle rotation angle
Degree realizes accurate indexing, after main shaft rotates to and needs angle, locks main shaft by magnetic powder brake, you can on main shaft
Workpiece is processed operation.When not needing to be indexed, the piston rod of driving cylinder is retracted, active friction wheel and driven friction pulley
Separation, indexing means will not work to main shaft and impact.The driving cylinder in chief axis dividing apparatus, stepping electricity in the present embodiment
The course of work of machine and magnetic powder brake is all controlled by the PLC controller on lathe, and indexing operation is automatically performed, and is indexed
It is easy to operate；Stepper motor operating accuracy is high, it can be achieved that accurate index simultaneously, and indexing means is simple in structure, at low cost.
Certainly in specific implementation, the stepper motor of chief axis dividing apparatus can also be substituted by angular transducer in the present embodiment.
In indexing process, after driving cylinder pushes active friction wheel as driven friction pulley compressive contact, manual rotation's main shaft, by
It is equal to driven friction pulley radius and active friction wheel in the rotation angle of angular transducer shaft and the ratio between the rotation angle of main shaft
The ratio between radius, therefore the testing result of angular transducer is multiplied by the ratio between driven friction pulley radius and active friction wheel radius, i.e.,
The rotation angle of main shaft can be obtained, angular transducer accuracy of detection is high, it can be achieved that accurate indexing.
Main-shaft box system of the present embodiment with automatic chuck further includes spindle brake, and the spindle brake includes passing through
Screw is fixed on the brake hoop 40 on main shaft, and the brake hoop is close to angular contact bearing.The brake, which further includes, is fixed on case
Driving cylinder 41 on internal wall and the pressure ring 42 being fixed on driving cylinder piston rod, the driving cylinder in the present embodiment is cylinder.Institute
Driving cylinder is stated along main shaft circumferential directions two, the quantity of certain driving cylinder can also be three, four etc. it is more than two its
It is counted.The pressure ring embedded rings 421 and the stiffening ring 422 being fixedly connected with embedded rings made of elastic material form, and press
Ring is coaxial with brake hoop；The brake hoop is between angular contact bearing and pressure ring, and the side on brake hoop with embedded rings face
Radial groove 43 is provided on face.
Main-shaft box system of the present embodiment with automatic chuck, during to active brake, spindle brake is by driving cylinder to pressure
Ring applies pulling force, and pressure ring is pressed against under a stretching force on brake hoop side, and the embedded rings on pressure ring are under the pressure of stiffening ring
It is deformed so that embedded rings generate the detent bumps with radial groove cooperation on brake hoop side, and detent bumps carry main shaft
For brake drag, realize principal shaft braking, braking take it is short, and due in braking process brake force mainly by embedded radial groove
The barrier force rather than frictionally that detent bumps provide, therefore embedded rings fretting wear in braking process is slow, service life
It is long.
Main-shaft box system of the present embodiment with automatic chuck further includes bearing seal system, and the bearing seal system includes
The bearing cap 7 on bearing block end face is bolted, is provided with and is pressed on the first deep groove ball bearing on the bearing cap
Annular convex platform 8, the middle part of bearing cap have the shaft sleeve part 9 coordinate with main shaft, be provided in the axle sleeve for sealing axle sleeve and
First sealing ring 10 in gap between main shaft is provided with the first end cover 11 for preventing the first sealing ring from coming off on the end face of axle sleeve；Institute
It states and the second sealing ring 12 is provided on the axis hole wall coordinated on babinet with front-end of spindle, second sealing ring is used to seal main shaft
Gap between front end and babinet upper shaft hole is provided with the second end cover 13 for fixing the second sealing ring in casing end face；The case
Third sealing ring 14 is provided on body on the position opposite with the inner ring of the second deep groove ball bearing, the third sealing ring is for close
Gap between joint sealing body and 3rd bearing end face；First sealing ring, the second sealing ring and third sealing ring are v-seal
Circle.
The bearing seal system further includes pressurized seal system, the pressurized seal system include air compressor 15,
The air purifier 16 that is connect with air compressor, the air dryer 17 being connect with air purifier connect with air dryer
The gas vacuum tank 18 that connects, the first pressure regulator valve 19 tank connected with gas voltage stabilizing, the inlet suction port being connect with the first pressure regulator valve
20, the inlet suction port includes ring pipe 201, is arranged on suction nozzle 202, the Yi Jijun connected on ring pipe with the first pressure regulator valve
Even several outlet nozzles 203 being arranged on ring pipe, the outlet nozzle is mounted on bearing cap, and outlet nozzle and the first zanjon
The inner ring end face face of ball bearing；It is provided with first annular 21 and second ring-shaped gas-guiding trench 22 of air slot on the main shaft, first
Gap of the ring-shaped gas-guiding trench between clutch shaft bearing end face and bearing cap, the second ring-shaped gas-guiding trench close to second bearing end face with
Gap between babinet；The axis for connecting first annular air slot and the second ring-shaped gas-guiding trench is additionally provided on the surface of the main shaft
To air slot 23, the axial direction air slot is evenly arranged several along main shaft circumferencial direction.Inlet suction port energy in the present embodiment
Compressed air is uniformly sent in the gap between clutch shaft bearing end face and bearing cap, while the second ring-shaped gas-guiding trench 22 can incite somebody to action
Compressed air is uniformly sent to the gap between second bearing end face and babinet, so as to form stable pressurized seal, avoids moistening
Lubricating oil is revealed.The air purifier in pressurized seal system is avoided that compressed air brings impurity in bearing into simultaneously, and air is done
Dry device 17 is avoided that air brings moisture in bearing into so that bearing can be from the damage of impurity and moisture etc..And gas voltage stabilizing
Tank can stablize air pressure, avoid pressure oscillation that sealing performance is caused to fluctuate, and can easily be to gas by the first pressure regulator valve
It is adjusted, ensures that air pressure makes the first sealing ring, the second sealing ring disengaging main shaft and third sealing ring when lathe works
Sealing lip is detached from bearing face, and so as to can guarantee that air pressure forms reliable sealing, oil leakage will not occur for guarantee.
The main-shaft box system with automatic chuck further includes bearing pre-tightened backlash eliminating equipment, the bearing pre-tightened backlash eliminating equipment
Including the spacer ring 24 being arranged between the first deep groove ball bearing and the second deep groove ball bearing, the two sides of the spacer ring are attached to respectively
On the cycle surface of first deep groove ball bearing and the second deep groove ball bearing；The bearing pre-tightened backlash eliminating equipment further includes to be set respectively
Left permanent magnetism ring body 25 and right permanent magnetism ring body 26 on the first deep groove ball bearing and the second deep groove ball bearing inner ring end face, the left side
The opposite face of permanent magnetism ring body and right permanent magnetism ring body is magnetic pole of the same name, and the counterpart of left permanent magnetism ring body and right permanent magnetism ring body is also embedded in
In same elastic packing ring set 27, elastic packing ring body is after bearing installation in compression shape body；First deep-groove ball and
Two deep groove ball bearing inner rings are pressed against under the effect of the repulsive force of left permanent magnetism ring body and right permanent magnetism ring body on steel ball, make deep-groove ball axis
It is in direct contact between the outer ring, steel ball and the inner ring three that hold.
The main-shaft box system with automatic chuck further includes bearing lubrication system, and the bearing lubrication system includes fuel tank
28th, oil filter 29, oil pump 30, cooler 31, the second pressure regulator valve 32, inlet nozzle 33 and oil outlet 34, the oil filter into
Hydraulic fluid port is connect with fuel tank, and the oil outlet of oil filter and the oil inlet end of oil pump connect, the oil outlet end of oil pump and the oil inlet of cooler
Connection, the oil outlet of cooler are connect with the second pressure regulator valve, and the inlet nozzle is mounted on the top of bearing block, and inlet nozzle is used for
Lubricating oil is sent into bearing, the oil outlet is mounted on the bottom of bearing block, and oil outlet is used to lubricating oil taking back fuel tank；
The first half of the spacer ring and lower half are respectively arranged with the upper arc oil groove 35 being separated from each other and arc lower oil groove 36, on spacer ring
The oilhole 37 for extending radially through spacer ring is additionally provided with, the top and bottom of the oilhole are located at upper arc oil groove and arc lower respectively
In oil groove, the oil inlet passage 38 connected with upper arc oil groove is provided on the bearing block and is connected with arc lower oil groove fuel-displaced
Channel 39, the inlet nozzle are mounted on oil inlet passage, and the oil outlet is mounted on oil discharge passage.
Main-shaft box system of the present embodiment with automatic chuck, the bearing seal system of setting can introduce pressurized air into
Gap location between axle sleeve and main shaft between gap location and front-end of spindle and babinet upper shaft hole, when lathe works, compressed air
Pressure the sealing lip of the first sealing ring and the second sealing ring is pushed away into main shaft, while by the sealing lip thrust of third sealing ring
The end face of two deep groove ball bearings so that the frictional resistance of main shaft is reduced, and can extend the service life of sealing ring.And it compresses
Air can also prevent environmental contaminants such as dust, steam from entering in bearing；After lathe is shut down, the sealing lip rebound of sealing ring
It is pressed on main shaft, so as to can also prevent dust, steam etc. from entering in bearing in the quiescent state；Therefore the bearing seal system can be to axis
Secondary good protective effect of interior friction is held, bearing life can be extended.
And gap location of the compressed air between air slot axial from main shaft front-end of spindle in the same direction and babinet upper shaft hole
During, the heat that machining can be transmitted to main shaft is taken away, and so as to cool down to main shaft, keeps main shaft rigidity,
Keep machine finish.And usually all it is in the prior art that lubricating oil is imported into bearing to the cooling of bearing, it is this cold
But mode cannot prevent the heat on main shaft from being transmitted to bearing inner race so that bearing inner race temperature is influenced greatly, to work as bearing by main shaft
When inner ring temperature increases, bearing inner race rigidity can reduce, and this leads to the reduction of axis system rigidity, and then reduces machining accuracy.
And the compressed air generated in this bearing seal system, the heat that machining can be transmitted to main shaft are taken away, so as to reduce
Spindle box bearing inner race transmits heat, while the heat that bearing rotary generates also can partly be taken away, therefore bearing by compressed air
Sealing system can not only play bearing dust-proof protective effect, moreover it is possible to cooling down work is played to bearing inner race and main shaft
With can improve main shaft and bearing inner race rigidity, keep spindle rotation accuracy.
Main-shaft box system of the present embodiment with automatic chuck, the bearing pre-tightened backlash eliminating equipment of setting, in the first deep-groove ball
Bearing and the second deep groove ball bearing are after installation is complete, and the inner ring of the first deep groove ball bearing and the second deep groove ball bearing is in left permanent-magnetic clamp
It is abutted against on steel ball under body and the effect of the repulsive force of right permanent magnetism ring body, so as to be between bearing outer ring, steel ball and bearing inner race three
Intimate contact, and the repulsive force that permanent magnetism ring body applies can eliminate the gap that bearing wear generates automatically so that the first deep-groove ball
The rigidity of bearing and the second deep groove ball bearing greatly enhances, and the rigidity of raising axis system that can be very big improves main shaft gyration essence
Degree and machine finish.
Lubricating oil is introduced into bearing by main-shaft box system of the present embodiment with automatic chuck, the bearing lubrication system of setting
It is interior, and by upper arc oil groove, arc lower oil groove and the oil hole structure on spacer ring and connect left magnetic ring body and right permanent-magnetic clamp
The elastic sealing ring nested structure of body so that lubricating oil can only flow to bearing lower half from the bearing first half, can to Bearing inner into
Row good lubrication and cooling can reduce bearing friction abrasion and reduce bearing temperature, bearing is made to keep superperformance for a long time；And
Oil filter in bearing lubrication system is avoided that lubricating oil brings impurity in bearing into, and cooler can be that the temperature of lubricating oil is kept
Stablize, so as to further improve lubrication and cooling of the lubricating oil to Bearing inner, bearing is made to maintain a good state, and then keep
Machine tool system machining accuracy.
In the present embodiment, first sealing ring, the second sealing ring and third sealing ring are made of nitrile rubber, use the longevity
Life length.
Finally illustrate, above example is merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, it will be understood by those of ordinary skill in the art that, it can be to this
The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model
It encloses, should all cover in the right of the utility model.
Claims (1)
1. a kind of main-shaft box system with automatic chuck, including babinet and main shaft, the main shaft is hollow shaft；The babinet it is interior
Bearing block is formed on side, the front end of the main shaft is installed on by two deep groove ball bearings on the bearing block of box inside,
The first deep groove ball bearing in described two deep groove ball bearings is in the middle part of babinet, and the second deep groove ball bearing is on the outside of babinet；
The rear end of the main shaft is mounted on by angular contact bearing on babinet, and the spindle end of fixed angular contact bearing is additionally provided on babinet
Lid；It is characterized in that：
The main-shaft box system further includes automatic chuck device, and the automatic chuck device includes the chuck for being fixed on front-end of spindle
Body, the claw being arranged on chuck body and be arranged in chuck body and with the drive disk of chuck body rotatable engagement, the chuck
The guide groove radially extended is provided on body, the claw is arranged in guide groove and is slidably matched with guide groove, the drive
Moving plate is connected with claw by end-face helical；The automatic chuck device, which further includes, to be arranged in main shaft and coaxially consolidates with drive disk
Surely the mandrel that connects, the chuck motor being fixed on main shaft end face and the rotating electrical connector that spindle end covers is arranged on, it is described
The armature spindle of chuck motor is fixedly connected with mandrel, and the rotating electrical connector is connected with chuck motor；
The main-shaft box system further includes bearing seal system, and the bearing seal system includes being bolted in bearing block
Bearing cap on end face is provided with the annular convex platform being pressed on the first deep groove ball bearing, the middle part of bearing cap on the bearing cap
With the shaft sleeve part coordinated with main shaft, it is provided in the axle sleeve for first sealing ring in gap between sealing axle sleeve and main shaft,
The first end cover for preventing the first sealing ring from coming off is provided on the end face of axle sleeve；The axis hole coordinated on the babinet with front-end of spindle
The second sealing ring is provided on wall, second sealing ring is used to seal the gap between front-end of spindle and babinet upper shaft hole, case
The second end cover for fixing the second sealing ring is provided on body end face；It is opposite with the inner ring of the second deep groove ball bearing on the babinet
Third sealing ring is provided on position, the third sealing ring is for the gap between seal case and 3rd bearing end face；It is described
First sealing ring, the second sealing ring and third sealing ring are v-ring；
The bearing seal system further includes pressurized seal system, and the pressurized seal system includes air compressor and air
The air purifier of compressor connection, the air dryer being connect with air purifier, the gas being connect with air dryer are steady
Tank, the first pressure regulator valve tank connected with gas voltage stabilizing, the inlet suction port being connect with the first pressure regulator valve are pressed, the inlet suction port includes
Ring pipe, several for being arranged on the suction nozzle connected on ring pipe with the first pressure regulator valve and being evenly arranged on ring pipe
Outlet nozzle, the outlet nozzle is mounted on bearing cap, and the inner ring end face face of outlet nozzle and the first deep groove ball bearing；The master
First annular air slot and the second ring-shaped gas-guiding trench are provided on axis, first annular air slot is close to clutch shaft bearing end face and bearing
Gap between lid, gap of second ring-shaped gas-guiding trench between second bearing end face and babinet；On the surface of the main shaft
The axial air slot for connecting first annular air slot and the second ring-shaped gas-guiding trench is additionally provided with, the axial direction air slot is justified along main shaft
Circumferential direction is evenly arranged several；
The main-shaft box system with automatic chuck further includes bearing pre-tightened backlash eliminating equipment, and the bearing pre-tightened backlash eliminating equipment includes
The spacer ring being arranged between the first deep groove ball bearing and the second deep groove ball bearing, the two sides of the spacer ring are attached to first deeply respectively
On the cycle surface of ditch ball bearing and the second deep groove ball bearing；The bearing pre-tightened backlash eliminating equipment, which further includes, is separately positioned on first
Deep groove ball bearing and the left permanent magnetism ring body on the second deep groove ball bearing inner ring end face and right permanent magnetism ring body, the left permanent magnetism ring body and
The opposite face of right permanent magnetism ring body is magnetic pole of the same name, and the counterpart of left permanent magnetism ring body and right permanent magnetism ring body is also close embedded in same elasticity
In seal ring set；First deep-groove ball and the second deep groove ball bearing inner ring are in the repulsion masterpiece of left permanent magnetism ring body and right permanent magnetism ring body
It is pressed against on steel ball under, makes to be in direct contact between outer ring, steel ball and the inner ring three of deep groove ball bearing；
The main-shaft box system with automatic chuck further includes bearing lubrication system, and the bearing lubrication system includes fuel tank, filter
Oily device, oil pump, cooler, the second pressure regulator valve, inlet nozzle and oil outlet, the oil inlet of the oil filter are connect with fuel tank, filter
The oil inlet end of the oil outlet of oily device and oil pump connects, and the oil outlet end of oil pump and the oil inlet of cooler connect, cooler it is fuel-displaced
Mouth is connect with the second pressure regulator valve, and the inlet nozzle is mounted on the top of bearing block, and inlet nozzle is used to lubricating oil being sent into bearing
Interior, the oil outlet is mounted on the bottom of bearing block, and oil outlet is used to lubricating oil taking back fuel tank；The first half of the spacer ring
The upper arc oil groove being separated from each other and arc lower oil groove are respectively arranged with lower half, be additionally provided on spacer ring extend radially through every
The oilhole of ring, the top and bottom of the oilhole are located in upper arc oil groove and arc lower oil groove, are set on the bearing block respectively
Be equipped with the oil inlet passage connected with upper arc oil groove and the oil discharge passage connected with arc lower oil groove, the inlet nozzle be mounted on into
On oily channel, the oil outlet is mounted on oil discharge passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721273008.0U CN207479617U (en) | 2017-09-29 | 2017-09-29 | Main-shaft box system with automatic chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721273008.0U CN207479617U (en) | 2017-09-29 | 2017-09-29 | Main-shaft box system with automatic chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207479617U true CN207479617U (en) | 2018-06-12 |
Family
ID=62479461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721273008.0U Expired - Fee Related CN207479617U (en) | 2017-09-29 | 2017-09-29 | Main-shaft box system with automatic chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207479617U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382868A (en) * | 2022-01-13 | 2022-04-22 | 无锡阳光精机股份有限公司 | A headstock for photovoltaic slicer machine |
-
2017
- 2017-09-29 CN CN201721273008.0U patent/CN207479617U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382868A (en) * | 2022-01-13 | 2022-04-22 | 无锡阳光精机股份有限公司 | A headstock for photovoltaic slicer machine |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180612 Termination date: 20190929 |
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| CF01 | Termination of patent right due to non-payment of annual fee |