The content of the invention
In view of this, it is existing to solve it is an object of the invention to provide a kind of numerically-controlled machine tool system with automatic part picking function
There is Digit Control Machine Tool not have automatic part picking function, artificial pickup is time-consuming more so that the technical problem that production efficiency reduces, and solution
Certainly bearing clearance, bearing wear, bearing and main shaft heating etc. cause the technical problem that machine finish reduces.
The numerically-controlled machine tool system with automatic part picking function of the invention, including body and the main spindle box system that is arranged on body
System, the main-shaft box system include casing and main shaft, and the main shaft is quill shaft;Formed with bearing on the medial surface of the casing
Seat, the front end of the main shaft are installed on the bearing block of box inside by two deep groove ball bearings, described two deep-groove ball axles
The first deep groove ball bearing in holding is in the middle part of casing, and the second deep groove ball bearing is on the outside of casing;The rear end of the main shaft leads to
Angular contact bearing is crossed on casing, the main shaft end cap of fixed angular contact bearing is additionally provided with casing;
The machine tool system also includes automatic part picking system, and the automatic part picking system includes being arranged on the vertical of lathe side
Post, the linear electric motors for being horizontally fixed on column upper end, the vertical cylinder being fixed on linear electric motors slide and it is fixed on cylinder
Workpiece placing frame on piston rod end, the linear electric motors and main axis parallel, the piston rod of the cylinder are vertical with main shaft;
The end of the main shaft is connected with the chuck for clamping workpiece, and the chuck includes the card for being fixed on front-end of spindle
Disk 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 card
The guide groove radially extended is provided with disk body, the claw is arranged in guide groove and is slidably matched with guide groove, described
Drive disk connects with the end-face helical that claw passes through;
The automatic part picking system is also including the electric cylinder being arranged in main shaft, the chuck being fixed on main shaft end face electricity
Machine, the mandrel being fixedly connected with the armature spindle of chuck motor and the rotating electrical connector that spindle end covers is arranged on, it is described electronic
One end of the housing of cylinder is fixedly connected with the end of mandrel, and the other end of the housing of electric cylinder is fixed on the end face of drive disk,
The expansion link of the electric cylinder stretches out drive disk, and the end of the expansion link of electric cylinder is connected with pusher plate;The chuck motor
It is connected with the power line of electric cylinder with rotating electrical connector;
The main-shaft box system also includes bearing seal system, and the bearing seal system includes being bolted in axle
Bearing cap on bearing end face, the annular boss being pressed on the first deep groove ball bearing is provided with the bearing cap, bearing cap
Middle part has the shaft sleeve part coordinated with main shaft, and the first sealing for gap between sealing axle sleeve and main shaft is provided with the axle sleeve
Enclose, the first end cap for preventing the first sealing ring from coming off is provided with the end face of axle sleeve;Coordinate on the casing with front-end of spindle
The second sealing ring is provided with axis hole wall, second sealing ring is used between sealing between front-end of spindle and casing upper shaft hole
Gap, the second end cap for fixing the second sealing ring is provided with casing end face;On the casing with the inner ring of the second deep groove ball bearing
The 3rd sealing ring is provided with relative position, between the 3rd sealing ring is used between seal case and 3rd bearing end face
Gap;First sealing ring, the second sealing ring and the 3rd sealing ring are v-ring;
The bearing seal system also includes pressurized seal system, the pressurized seal system include air compressor, with
The air purifier of air compressor connection, the air dryer being connected with air purifier, the gas being connected with air dryer
Body vacuum tank, the first pressure regulator valve tank connected with gas voltage stabilizing, the inlet suction port being connected with the first pressure regulator valve, the inlet suction port
If including ring pipe, it 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 arranged 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 with 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 casing;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 with face, the axial air slot edge is main
Axle circumferencial direction is evenly arranged some;
The numerically-controlled machine tool system with automatic part picking function also includes bearing pre-tightened backlash eliminating equipment, and the bearing pre-tightened disappears
Gap device includes the spacer ring being arranged between the first deep groove ball bearing and the second deep groove ball bearing, the two sides difference of the spacer ring
It is attached on the cycle surface of the first deep groove ball bearing and the second deep groove ball bearing;The bearing pre-tightened backlash eliminating equipment also includes difference
It is arranged on the 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 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;First deep-groove ball and the second deep groove ball bearing inner ring are in left permanent magnetism ring body and right permanent magnetism ring body
Repulsive force effect under be pressed against on steel ball, make directly to contact between outer ring, steel ball and the inner ring three of deep groove ball bearing;
The numerically-controlled machine tool system with automatic part picking function also includes bearing lubrication system, the bearing lubrication system bag
Include fuel tank, oil filter, oil pump, cooler, the second pressure regulator valve, inlet nozzle and oil outlet, oil inlet and the oil of the oil filter
Case connects, and the oil-out 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, cooling
The oil-out of device is connected with the second pressure regulator valve, and the inlet nozzle is arranged on the top of bearing block, and inlet nozzle is used for lubricating oil
It is sent into bearing, the oil outlet is arranged on the bottom of bearing block, and oil outlet is used to lubricating oil taking back fuel tank;The spacer ring
The first half and lower half be respectively arranged with upper the arc oil groove and arc lower oil groove being separated from each other, be additionally provided with spacer ring along footpath
To the oilhole through spacer ring, the top and bottom of the oilhole are located in upper arc oil groove and arc lower oil groove respectively, the axle
The oil inlet passage connected with upper arc oil groove and the oil discharge passage connected with arc lower oil groove, the inlet nozzle are provided with bearing
On oil inlet passage, the oil outlet is arranged on oil discharge passage.
Further, the elastic packing ring set is made up of nitrile rubber.
Beneficial effects of the present invention:
1st, the numerically-controlled machine tool system of the invention with automatic part picking function, its automatic part picking system can be by the workpiece processed certainly
Dynamic removed from chuck is transferred to outside lathe, and pickup takes short, can improve lathe production efficiency.
2nd, the numerically-controlled machine tool system of the invention with automatic part picking function, its bearing seal system set can be by compressed air
The gap location between gap location and front-end of spindle and casing upper shaft hole between axle sleeve and main shaft is incorporated into, when lathe works, pressure
The sealing lip of first sealing ring and the second sealing ring is pushed away main shaft by the pressure of contracting air, while by the sealing lip of the 3rd sealing ring
The end face of the deep groove ball bearing of thrust second 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 of sealing ring
Lip resilience 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
System can play good protective effect to friction pair in bearing, can extend bearing life.
And compressed air is in the gap location from main shaft between axial air slot front-end of spindle in the same direction and casing upper shaft hole
During, the heat that machining can be delivered to main shaft is taken away, and so as to cool to main shaft, keeps main shaft rigidity,
Keep machine finish.And the cooling to bearing is generally all that lubricating oil is imported into bearing in the prior art, this cold
But mode can not prevent heat on main shaft to bearing inner race transmission so that bearing inner race temperature is influenceed greatly, to work as bearing by main shaft
When inner ring temperature raises, bearing inner race rigidity can reduce, and this causes the reduction of axis system rigidity, and then reduces machining accuracy.
And caused compressed air in this bearing seal system, the heat that machining can be delivered to main shaft are taken away, so as to reduce
Main spindle box bearing inner race transmits heat, while heat caused by bearing rotary partly can also be taken away by compressed air, therefore bearing
Sealing system can not only play dust-proof protective effect to bearing, 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, the numerically-controlled machine tool system of the invention with automatic part picking function, its bearing pre-tightened backlash eliminating equipment set, first
After deep groove ball bearing and the second deep groove ball bearing installation, the inner ring of the first deep groove ball bearing and the second deep groove ball bearing is on a left side
Abutted against under the effect of the repulsive force of permanent magnetism ring body and right permanent magnetism ring body on steel ball, so as to bearing outer ring, steel ball and bearing inner race three
It is intimate contact between person, and the repulsive force that permanent magnetism ring body applies can eliminate gap caused by bearing wear automatically so that first
The rigidity of 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 main shaft
Rotating accuracy and machine finish.
4th, the numerically-controlled machine tool system of the invention with automatic part picking function, its bearing lubrication system set introduce lubricating oil
Into bearing, and pass through 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
The elastic sealing ring nested structure of permanent magnetism ring body so that lubricating oil can only flow to bearing lower half from the bearing first half, can be to bearing
Inside carries out good lubrication and cooling, can reduce bearing friction abrasion and reduce bearing temperature, bearing is kept formedness for a long time
Energy;And the oil filter in bearing lubrication system is avoided that lubricating oil brings impurity in bearing into, cooler can be lubricating oil
Temperature keeps stable, so as to further improve lubrication and cooling of the lubricating oil to Bearing inner, bearing is maintained a good state,
And then keep machine tool system machining accuracy.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As illustrated, numerically-controlled machine tool system of the present embodiment with automatic part picking function, including body 40 and it is arranged on body
On main-shaft box system, the main-shaft box system includes casing 1 and main shaft 2, and the main shaft is quill shaft;The inner side of the casing
It is installed on face formed with bearing block 3, the front end of the main shaft by two deep groove ball bearings on the bearing block of box inside, institute
The first deep groove ball bearing 4 in two deep groove ball bearings is stated in the middle part of casing, the second deep groove ball bearing 5 is on the outside of casing;
The rear end of the main shaft is arranged on casing by angular contact bearing 6, and the main shaft of fixed angular contact bearing is additionally provided with casing
End cap 41.
The machine tool system also includes automatic part picking system, and the automatic part picking system includes being arranged on the vertical of lathe side
Post 42, the linear electric motors 43 for being horizontally fixed on column upper end, the vertical cylinder 44 being fixed on linear electric motors slide and fixation
Workpiece placing frame 45 on cylinder piston boom end, the linear electric motors and main axis parallel, the piston rod of the cylinder and master
Axle is vertical.
The end of the main shaft is connected with the chuck for clamping workpiece, and the chuck includes the card for being fixed on front-end of spindle
Disk body 46, the claw 47 being arranged on chuck body and be arranged in chuck body and with the drive disk 48 of chuck body rotatable engagement,
The guide groove radially extended is provided with the chuck body, the claw, which is arranged in guide groove and slided with guide groove, matches somebody with somebody
Close, the drive disk connects with the end-face helical that claw passes through.
The automatic part picking system is also including the electric cylinder 49 being arranged in main shaft, the chuck being fixed on main shaft end face electricity
Machine 50, the mandrel 51 being fixedly connected with the armature spindle of chuck motor and the rotating electrical connector 52 that spindle end covers is arranged on, institute
State one end of the housing of electric cylinder to be fixedly connected with the end of mandrel, the other end of the housing of electric cylinder is fixed on the end of drive disk
On face, the expansion link of the electric cylinder stretches out drive disk, and the end of the expansion link of electric cylinder is connected with pusher plate 53;The card
The power line of coil motor and electric cylinder is connected with rotating electrical connector.Chuck motor 50 in the present embodiment is stepper motor, rotation
Electric connection 52 is model A1H90PS mercury ring, selects the species of electric connection and model more certainly, can be according to being actually needed
Selected.
The course of work of automatic part picking system in the present embodiment is as follows:
1) after lathe processes at one time, principal shaft braking, machine tool protection door is opened;
2) cylinder 44 is moved to above chuck by linear electric motors 43, and cylinder 44 declines workpiece placing frame 45 as chuck phase
It is right;
3) chuck motor 50 drives driving disc spins, and workpiece is unclamped in the movement of drive disk rotation forces claw;
4) piston rod of electric cylinder 49 stretches out is pushed into workpiece placing frame 45 by workpiece;
5) workpiece placing frame 45 is lifted out machine tooling area by cylinder 44, and cylinder is moved to lathe side by linear electric motors 43
Fang Jian areas.
After workpiece placing frame 45 is lifted out machine tooling area by cylinder 44, worker can carry out the piece installing of next workpiece
Operation.Because pickup is automatically performed, pickup speed is fast, can improve processing efficiency.Simultaneously in next workpiece process, work
Workpiece in workpiece placing frame 45 can be removed and is put on turnover rack 54 by people, to carry out standard for subjob under automatic part picking system
It is standby.
Numerically-controlled machine tool system of the present embodiment with automatic part picking function, when the anglec of rotation for needing control main shaft, to realize
When main shaft accurately indexes, driving cylinder is first controlled, stepper motor is pushed up by driving cylinder, makes what is be connected with stepping motor rotating shaft
Active friction wheel rise to driven friction pulley compressive contact, then by control stepper motor work with realize control main shaft revolve
Gyration, accurate indexing is realized, after main shaft rotates to and needs angle, main shaft is locked by magnetic powder brake, you can to main shaft
On workpiece be processed operation.When that need not be indexed, the piston rod of driving cylinder is retracted, and active friction wheel rubs with driven
Wheel separation is wiped, indexing means will not work main shaft and impact.The driving cylinder in chief axis dividing apparatus, step in the present embodiment
Stepper motor and the course of work of magnetic powder brake are all controlled by the PLC on lathe, and indexing operation is automatically performed,
Indexing operation is simple;Stepper motor operating accuracy is high simultaneously, and accurate indexing can be achieved, and indexing means is simple in construction, and cost is low.
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 promotes 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 anglec of rotation of angular transducer rotating shaft and the ratio between the anglec of rotation 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 anglec of rotation of main shaft can be obtained, angular transducer accuracy of detection is high, and accurate indexing can be achieved.
Numerically-controlled machine tool system of the present embodiment with automatic part picking function also includes spindle brake, the spindle brake bag
The brake hoop 40 being fixed by screws on main shaft is included, the brake hoop is close to angular contact bearing.The brake also includes solid
The driving cylinder 41 that is scheduled on cabinet wall and the pressure ring 42 being fixed on driving cylinder piston rod, the driving cylinder in the present embodiment is gas
Cylinder.For the driving cylinder along main shaft circumferential directions two, the quantity of certain driving cylinder can also be three, the two or more such as four
Other numbers.The pressure ring embedded rings 421 and the stiffening ring 422 being fixedly connected with embedded rings made of elastomeric material form,
And pressure ring and brake hoop are coaxial;The brake hoop between angular contact bearing and pressure ring, and on brake hoop with embedded rings face
Side on be provided with radial groove 43.
Numerically-controlled machine tool system of the present embodiment with automatic part picking function, during to active brake, spindle brake passes through driving
Cylinder applies pulling force to pressure ring, and pressure ring is pressed against on brake hoop side under a stretching force, and the embedded rings on pressure ring are in stiffening ring
It is deformed under pressure so that embedded rings produce the detent bumps coordinated with radial groove on brake hoop side, detent bumps pair
Main shaft provides brake drag, realizes principal shaft braking, and braking is time-consuming short, and due in braking procedure brake force mainly by it is embedded radially
The barrier force that the detent bumps of groove provide, rather than frictionally, therefore embedded rings fretting wear in braking procedure is slow, makes
Use long lifespan.
Numerically-controlled machine tool system of the present embodiment with automatic part picking function also includes bearing seal system, the bearing seal system
System includes being bolted the bearing cap 7 on bearing block end face, is provided with the bearing cap and is pressed in the first deep-groove ball axle
The annular boss 8 held, the middle part of bearing cap have the shaft sleeve part 9 coordinated with main shaft, are provided with the axle sleeve for sealing
First sealing ring 10 in gap between axle sleeve and main shaft, the first end cap for preventing the first sealing ring from coming off is provided with the end face of axle sleeve
11;The second sealing ring 12 is provided with the axis hole wall coordinated on the casing with front-end of spindle, second sealing ring is used for close
The gap sealed between front-end of spindle and casing upper shaft hole, the second end cap 13 for fixing the second sealing ring is provided with casing end face;
The 3rd sealing ring 14, the 3rd sealing ring are provided with the casing on the position relative with the inner ring of the second deep groove ball bearing
For the gap between seal case and 3rd bearing end face;First sealing ring, the second sealing ring and the 3rd sealing ring are V-arrangement
Sealing ring.
The bearing seal system also includes pressurized seal system, the pressurized seal system include air compressor 15,
The air purifier 16 that is connected with air compressor, the air dryer 17 being connected with air purifier, connect with air dryer
Gas vacuum tank 18, the first pressure regulator valve 19 tank connected with gas voltage stabilizing, the inlet suction port 20 being connected with the first pressure regulator valve connect,
The inlet suction port includes ring pipe 201, is arranged on the suction nozzle 202 that connect on ring pipe with the first pressure regulator valve and uniform
Several outlet nozzles 203 being arranged on ring pipe, the outlet nozzle is arranged on bearing cap, and outlet nozzle and the first deep-groove ball
The inner ring end face face of bearing;The first annular ring-shaped gas-guiding trench 22 of air slot 21 and second, the first ring are provided with the main shaft
Gap of the shape air slot between clutch shaft bearing end face and bearing cap, the second ring-shaped gas-guiding trench is close to second bearing end face and case
Gap between body;The axial direction for connecting first annular air slot and the second ring-shaped gas-guiding trench is additionally provided with the surface of the main shaft
Air slot 23, the axial air slot are evenly arranged some along main shaft circumferencial direction.Inlet suction port in the present embodiment can incite somebody to action
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 will can press
Contracting air is uniformly sent to the gap between second bearing end face and casing, so as to form stable pressurized seal, avoids lubricating
Oil leakage.The air purifier in pressurized seal system is avoided that compressed air brings impurity in bearing into simultaneously, is air-dried
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 vacuum tank
Stabilization can be carried out to air pressure, avoids pressure oscillation from causing sealing property to fluctuate, and can easily enter by the first pressure regulator valve to gas
Row regulation, ensure that air pressure makes the close of the first sealing ring, the second sealing ring disengaging main shaft and the 3rd sealing ring when lathe works
Seal lip and depart from bearing face, so as to can guarantee that air pressure forms reliable sealing, oil leakage will not occur for guarantee.
The numerically-controlled machine tool system with automatic part picking function also includes bearing pre-tightened backlash eliminating equipment, and the bearing pre-tightened disappears
Gap device includes the spacer ring 24 being arranged between the first deep groove ball bearing and the second deep groove ball bearing, the two sides point of the spacer ring
It is not attached on the cycle surface of the first deep groove ball bearing and the second deep groove ball bearing;The bearing pre-tightened backlash eliminating equipment also includes dividing
The first deep groove ball bearing and the left permanent magnetism ring body 25 on the second deep groove ball bearing inner ring end face and right permanent magnetism ring body 26 are not arranged on,
The opposite face of the left 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
Also it is embedded in same elastic packing ring set 27, elastic packing ring body is after bearing installation in compression shape body;First zanjon
Ball and the second deep groove ball bearing inner ring are pressed against on steel ball under the effect of the repulsive force of left permanent magnetism ring body and right permanent magnetism ring body, make depth
Directly contacted between the outer ring of ditch ball bearing, steel ball and inner ring three.
The numerically-controlled machine tool system with automatic part picking function also includes bearing lubrication system, the bearing lubrication system bag
Include fuel tank 28, oil filter 29, oil pump 30, cooler 31, the second pressure regulator valve 32, inlet nozzle 33 and oil outlet 34, the oil strain
The oil inlet of device is connected with fuel tank, and the oil inlet end of the oil-out of oil filter and oil pump connects, the oil outlet end of oil pump and cooler
Oil inlet is connected, and the oil-out of cooler is connected with the second pressure regulator valve, and the inlet nozzle is arranged on the top of bearing block, oil-feed
Mouth is used to lubricating oil being sent into bearing, and the oil outlet is arranged on the bottom of bearing block, and oil outlet is used to connect lubricating oil
Oil return box;The first half of the spacer ring and lower half are respectively arranged with upper the arc oil groove 35 and arc lower oil groove being separated from each other
36, the oilhole 37 for extending radially through spacer ring is additionally provided with spacer ring, the top and bottom of the oilhole are respectively positioned at upper arc oil
In groove and arc lower oil groove, be provided with the bearing block oil inlet passage 38 that is connected with upper arc oil groove and with arc lower oil groove
The oil discharge passage 39 of connection, the inlet nozzle are arranged on oil inlet passage, and the oil outlet is arranged on oil discharge passage.
Numerically-controlled machine tool system of the present embodiment with automatic part picking function, its bearing seal system set can be by compressed air
The gap location between gap location and front-end of spindle and casing upper shaft hole between axle sleeve and main shaft is incorporated into, when lathe works, pressure
The sealing lip of first sealing ring and the second sealing ring is pushed away main shaft by the pressure of contracting air, while by the sealing lip of the 3rd sealing ring
The end face of the deep groove ball bearing of thrust second 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 of sealing ring
Lip resilience 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
Good protective effect can be played to friction pair in bearing, bearing life can be extended.
And compressed air is in the gap location from main shaft between axial air slot front-end of spindle in the same direction and casing upper shaft hole
During, the heat that machining can be delivered to main shaft is taken away, and so as to cool to main shaft, keeps main shaft rigidity,
Keep machine finish.And the cooling to bearing is generally all that lubricating oil is imported into bearing in the prior art, this cold
But mode can not prevent heat on main shaft to bearing inner race transmission so that bearing inner race temperature is influenceed greatly, to work as bearing by main shaft
When inner ring temperature raises, bearing inner race rigidity can reduce, and this causes the reduction of axis system rigidity, and then reduces machining accuracy.
And caused compressed air in this bearing seal system, the heat that machining can be delivered to main shaft are taken away, so as to reduce
Main spindle box bearing inner race transmits heat, while heat caused by bearing rotary partly can also be taken away by compressed air, therefore bearing
Sealing system can not only play dust-proof protective effect to bearing, 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.
Numerically-controlled machine tool system of the present embodiment with automatic part picking function, its bearing pre-tightened backlash eliminating equipment set, first
After deep groove ball bearing and the second deep groove ball bearing installation, the inner ring of the first deep groove ball bearing and the second deep groove ball bearing is on a left side
Abutted against under the effect of the repulsive force of permanent magnetism ring body and right permanent magnetism ring body on steel ball, so as to bearing outer ring, steel ball and bearing inner race three
It is intimate contact between person, and the repulsive force that permanent magnetism ring body applies can eliminate gap caused by bearing wear automatically so that first
The rigidity of 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 main shaft
Rotating accuracy and machine finish.
Numerically-controlled machine tool system of the present embodiment with automatic part picking function, its bearing lubrication system set introduce lubricating oil
Into bearing, and pass through 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
The elastic sealing ring nested structure of permanent magnetism ring body so that lubricating oil can only flow to bearing lower half from the bearing first half, can be to bearing
Inside carries out good lubrication and cooling, can reduce bearing friction abrasion and reduce bearing temperature, bearing is kept formedness for a long time
Energy;And the oil filter in bearing lubrication system is avoided that lubricating oil brings impurity in bearing into, cooler can be lubricating oil
Temperature keeps stable, so as to further improve lubrication and cooling of the lubricating oil to Bearing inner, bearing is maintained a good state,
And then keep machine tool system machining accuracy.
In the present embodiment, the elastic packing ring set is made up of nitrile rubber.In the present embodiment, first sealing ring,
Also nitrile rubber is made for second sealing ring and the 3rd sealing ring.
The nitrile rubber of elastic packing ring set is made in the present embodiment by weight percentage, it is composed of the following components:
Nitrile rubber 50-80 parts;
Metallic fiber 6-10 parts;
Stearic acid 0.5-1.0 parts;
Cupric oxide 2-3 parts;
Calcium oxide 0.5-1 parts;
Metallic fiber 6-10 parts;
Adipic acid dibutyl ester 5~10,
Dioctyl sebacate 5~10,
Diethyl phthalate 3-8 parts
Tissuemat E 1-3 parts
Accelerator 0.5-1.5 parts
Antiozonant 1-3 parts
Age resistor 0-3 parts
Carbon black 20-30 parts
Antioxidant D DA 0.5~1.5.
By increasing metallic fiber composition in nitrile rubber in the present embodiment, the anti-wear performance of nitrile rubber is improved,
Rebound performance has also arrived lifting simultaneously.It can make sealing ring that there is longer service life and better seal performance.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent substitution, and without departing from the objective and scope of technical solution of the present invention, it all should cover at this
Among the right of invention.