CN206492932U - A kind of spindle motor unit of numerical control rip cutting turnning and milling complex centre application - Google Patents

Abstract

The utility model is related to the technical field of numerical control rip cutting complex milling machine tool, specifically related to a kind of spindle motor unit of numerical control rip cutting turnning and milling complex centre application, including main shaft and the clamping device being arranged in main shaft, the clamping device includes push rod, it is arranged at the fastening material drive mechanism at push rod rear portion, it is arranged at the clamping pushing sleeve at push rod rear portion, it is arranged at the clamping sliding sleeve for clamping pushing sleeve endoporus, it is arranged at the rear adjusting nut for clamping sliding sleeve rear portion, it is arranged at a pair of foward-push clamping jaws for clamping sliding sleeve, it is arranged at guide pin bushing in the anterior main shaft of push rod, it is arranged at the spring of guide pin bushing endoporus bottom in main shaft, the chuck front nut for being arranged at the collet of spring at front end and being arranged in main shaft outside guide pin bushing.The utility model improves the length accuracy and stability of processing part so that length tolerance is reduced, and reduces process time, saves cost by the method for clamping of foward-push.

Description

A kind of spindle motor unit of numerical control rip cutting turnning and milling complex centre application

Technical field

The utility model is related to the technical field of numerical control rip cutting complex milling machine tool, and in particular to a kind of numerical control rip cutting turnning and milling The spindle motor unit of complex centre application.

Background technology

Digit Control Machine Tool, China by the high speed development of nearly 16 years, fully meets in economical, popular field The market demand；Middle and high end type lathe, throughout the country, in gigantic and vigorous transition and upgrade climax, this 2 years R＆D intensity are flourishing Accelerate, as emerging rapidly in large numbersBamboo shoots after a spring rain, gradually reveal high-quality green tea；Numerical control rip cutting turnning and milling complex centre, is commonly called as " Swiss cut walks scheming " i.e. main spindle box and moves Type, specializes in a kind of compound lathe of Automatic Series of the smooth precision rod of turn-milling cutting.Type country's beginning of the year in this century is just Introduce and absorb exploitation, due to the series model belong at a high speed, it is high-precision, clever it is thin, efficiently, the high-end lathe category that is complex as a whole it Interior fine product, the domestic processing from basic part, functional part, standard component, digital control system, servomotor, main shaft and driving, Electricity piece, auxiliary member, non-standard all do not form required fine high-quality supporting industries chain, exploitation volume production is obstructed always.

Taiwan, which produces middle-size and small-size lathe, some superiority, but it sets foot in numerical control rip cutting turnning and milling complex centre field nearly ten 8th, 9 years, brand and volume production also are made without one, global mechanical industry developed country also only has：Switzerland, Japan, South Korea have Produce this type formation brand.Domestic market increasingly has an optimistic view of this kind of type, and demand is also considerable, year 10000000000 Polynary list is also rising, but more than 85% also relies on import and overseas-funded enterprise's brand type.Domestic this accelerates lifting for several years The exploitation dynamics of the series of products, from functional part, basic part, standard component, non-standard, auxiliary accessories and electric fittings all Lifting.Also have certain gap with import machine in terms of the performance and fault rate at present, it is necessary under bigger dynamics carry out functional part, Basic part, the optimization and upgrading of digital control system and the quality-improving that becomes more meticulous of auxiliary member.

High-speed Electrical Spindle cell-in-series, are a passes in the series model of high-speed precision digital control rip cutting turnning and milling complex centre The functional part of the key of key, the quality of its performance directly affects the machining accuracy of the series model, processing efficiency, working ability （Cutting force, anti-seismic performance in specification limit, functional performance）And the index such as fault rate.External all numerical control rip cutting turnning and millings are answered Central principal axis series is closed, all using electro spindle（Built-in electric machine main shaft）, domestic application has in the main shaft of the series model Enterprise technology it is immature, only with mechanical main shaft, plug-in motor；Very different using the producer of electro spindle, function is not to the utmost Comply with one's wishes, its characteristic coefficient require it is difficult can be perfect, and marketing users to the function in numerical control rip cutting turnning and milling complex centre, characteristic coefficient, Precision, stability requirement more and more higher.Home-made machine is badly in need of breaking through electro spindle characteristic coefficient, working ability, stability, processing efficiency Technological innovation bottleneck.Its characteristic coefficient working ability, mainly by built-in motor, driver, encoder, closed-loop control and multiaxis High-end CNC system develops lifting；Have to innovate depending on electro spindle mechanical structure in terms of stability, processing efficiency and optimize, it is supporting The precision improvement of part and management and control.Domestic market to numerical control rip cutting turnning and milling complex centre demand in rapid growth, however, user couple The series model working ability scope and processing efficiency propose higher requirement.The problem of presently, there are：The material folding dress of use Put and make it that the length of part to be processed is unstable, tolerance is big.

Utility model content

The purpose of this utility model is for of the prior art above-mentioned not enough compound there is provided a kind of numerical control rip cutting turnning and milling The spindle motor unit of center applications.

To achieve the above object, concrete scheme of the present utility model is as follows：A kind of numerical control rip cutting turnning and milling complex centre application Spindle motor unit, including main shaft and the clamping device that is arranged in main shaft, the clamping device includes push rod, is arranged at push rod The fastening material drive mechanism at rear portion, the clamping pushing sleeve for being arranged at push rod rear portion, be arranged at clamp pushing sleeve endoporus clamping sliding sleeve, The rear adjusting nut at clamping sliding sleeve rear portion is arranged at, a pair of foward-push clamping jaws of clamping sliding sleeve is arranged at, is arranged at push rod front portion Main shaft in guide pin bushing, be arranged at the spring of guide pin bushing endoporus bottom in main shaft, be arranged at the collet of spring at front end and be arranged at Chuck front nut in main shaft outside guide pin bushing.

The sliding sleeve that clamps is provided with a pair of waist slotted holes for supplying foward-push clamping jaw rotary moveable, and described clamping sliding sleeve one end is provided with Make the groove of pivot point for foward-push clamping jaw；Described foward-push clamping jaw one end is provided with for convex with the fulcrum of fit depressions Rise, the end of the foward-push clamping jaw is provided with the inclined-plane for being used for promoting push rod.

Described foward-push clamping jaw one end, which is provided with, to be used for clamping the abutting projection that pushing sleeve is engaged.

The fastening material drive mechanism includes being used to drive the drive bearing corner block for clamping pushing sleeve, clamped for driving The deep groove ball bearing of pushing sleeve, the shift fork for drive bearing corner block and deep groove ball bearing and the cylinder for promoting shift fork.

Also include main spindle box body, main spindle box body is provided with air inlet and corresponding air outlet；The air inlet is pacified provided with fan Fill plate and aerofoil fan.

The rear-end of spindle is equipped with encoder flange, and encoder flange sleeve is provided with encoder gear, encoder gear upper end Provided with coding inductor；The encoder flange rear end is provided with the brake apparatus for strength Milling Process.

The main spindle box body rear and front end is respectively equipped with bearing block, and bearing block mounted in pairing mode has in bearing, the bearing block Pairing bearing in the middle of be provided with internal space ring and external space ring；The main shaft, bearing block and bearing pass through front axle pressure cap, rear bearing gland, preceding Accurate locking nut and rear accurate locking nut pressure regulation are fixed.

Motor wound stator and motor line winding rotor correspond to the middle-grade position installed in main spindle box body and main shaft respectively.

Also include spindle driver and braking resistor.

The beneficial effects of the utility model：

（1）The utility model improves the length accuracy and stability of processing part by the method for clamping of foward-push so that Length tolerance is reduced, and reduces process time, saves cost；

（2）The temperature rise of electro spindle is effectively controlled, saved the start constant temperature time, improved productivity ratio, improve Process element precision and uniformity；

（3）Optimize the overall precision of electro spindle so that stability of the lathe in processing element precision and indexing accuracy；

（4）Improve the characteristic of electro spindle low speed and large torque.

Brief description of the drawings

Fig. 1 is cross-sectional view of the present utility model.

Fig. 2 is the mplifying structure schematic diagram of A in Fig. 1.

Fig. 3 is top view of the present utility model.

Fig. 4 is side view of the present utility model.

Fig. 5 is fundamental diagram of the present utility model.

Fig. 6 is rotating speed of the present utility model-power load performance diagram and rotating speed-torque diagram.

Reference：

1- main spindle box bodies；2- main shafts；3- chuck front nuts；4- collets；Guide pin bushing in 5- main shafts；6- springs；Prevent before 7- Dirt lid；8- front axle pressure caps；9- front-end bearing pedestals；Accurate locking nut before 10-；11- clutch shaft bearings；12- fore bearing internal space ring and external space rings； Interstage sleeve before 13-；14- motor wound stators；15- motor line winding rotors；Interstage sleeve after 16-；17- rear bearing blocks；18- second bearings； Bearing internal space ring and external space ring after 19-；Bearing gland after 20-；Bearing lock nut after 21-；22- encoder flanges；23- encoder teeth Wheel；24- braked wheels；25- flat keys；26- braked wheel locking nuts；Adjusting nut after 27-；28- push rods；29- clamps sliding sleeve；291- Groove；30- clamps pushing sleeve；31- foward-push clamping jaws；311- branch point bosses；312- abuts projection；32- deep groove ball bearings；33- is passed Dynamic bearing corner block；34- locking nuts；35- air cylinder supports；36- cushion covers；37- lock-screws；38- cylinders；39-Y-G joints； 40- bearing pins；41- shift forks；Position case after 42-；43- case lids；44- alignment pins；45- terminal boxes；46- fan installing plates；47- axle streams Fan；48- encodes inductor.

Embodiment

The utility model is further described with the following Examples.Described in of the present utility model " on ", " under ", The directions such as "left", "right", "front", "rear" are defined by Fig. 1.

As shown in figure 1, a kind of spindle motor unit of numerical control rip cutting turnning and milling complex centre application, including main shaft 2 and it is arranged at Clamping device in main shaft 2, the clamping device include push rod 28, be arranged at the rear portion of push rod 28 fastening material drive mechanism, The clamping pushing sleeve 30 at the rear portion of push rod 28 is arranged at, the clamping sliding sleeve 29 of the clamping endoporus of pushing sleeve 30 is arranged at, is arranged at clamping sliding sleeve The rear adjusting nut 27 of 29 rear ends, a pair of foward-push clamping jaws 31 for being arranged at clamping sliding sleeve 29, the master for being arranged at the front portion of push rod 28 Guide pin bushing 5 in axle, the spring 6 of the endoporus bottom of guide pin bushing 5 in main shaft is arranged at, the collet 4 of the front end of spring 6 is arranged at and is arranged at Chuck front nut 3 in main shaft outside guide pin bushing 5.

Such clamping device can realize the method for clamping of foward-push, improve the length accuracy and stably of processing part Property.Former rear pull type method of clamping, processes part length precision, during Continuous maching, length tolerance scope is in 0.03- after clamping Between 0.20mm, length tolerance is unstable；Using foward-push method of clamping, after clamping, when persistently processing, length tolerance is stable to be controlled System is in 0.01-0.03mm.

Specifically, the material folding mode of clamping device is：Open and close by the CNC magnetic valves controlled, extraneous air is compressed The power source of machine supply is sent into cylinder 38 from conduit, and cylinder 38 promotes shift fork 41 to move back and forth.Shift fork 41 is forwarded by power transmission shaft Hornblock 33, deep groove ball bearing 32 drive clamping pushing sleeve 30 to move back and forth, and promote and clamp pushing sleeve 30, are pushed away before its big end endoporus R compressing The abutting projection 312 of formula clamping jaw 31, it is specially to stick up R arcs outside microcephaly to abut projection 312 so that foward-push clamping jaw 31, which is produced, radially to be moved Position, because the restriction of rear adjusting nut 27 make it that clamping sliding sleeve 29 is fixed, the branch point boss 311 of foward-push clamping jaw 31 is specially The outer R arcs of major part, and slided in the plane of symmetry for clamping the large end face of sliding sleeve 29 into groove 291, and at a pair of clamping sliding sleeve 29 To contract in waist slotted hole, so as to promote the forward end of push rod 28 to move, make guide pin bushing 5 in main shaft while forward slip.Led in main shaft Spring 6 is housed, spring 6 pushes against collet 4 in chuck front nut 3, prevents collet 4 from loosening in set 5, not plus before external force In light precompressed, when 5 forward slip of guide pin bushing in main shaft, the compression stress increase of spring 6 makes the cone forced contraction of collet 4, Clamped bar is clamped.When needing to unclamp the bar of clamping, CNC electromagnetic valve of instruction unloads gas, and the piston rod of cylinder 38 shrinks, Shift fork 41, drive bearing corner block 33, deep groove ball bearing 32 exit foward-push clamping jaw 31 by pushing sleeve 30 is clamped, and make the removal of push rod 28 Axial force, at this moment the spring 6 in main shaft in guide pin bushing 5 alleviate the pressure of rear end, with the precompression of itself, promote and led in main shaft Set 5 is backward mobile to be resetted, and the precentrum convergent force of collet 4 is opened, and clamped material just realizes release.

In the present embodiment, as shown in Fig. 2 the sliding sleeve 29 that clamps is provided with a pair of waists for supplying the rotary moveable of foward-push clamping jaw 31 Slotted eye, described one end of clamping sliding sleeve 29 is provided with the groove 291 for making pivot point for foward-push clamping jaw 31；The foward-push clamping jaw 31 One end is provided with the branch point boss 311 for being used for being engaged with groove 291, and the end of the foward-push clamping jaw 31, which is provided with, to be used to promote top The inclined-plane of bar 28.The groove 291 is R grooves, is specifically located at the big end for clamping sliding sleeve, that is, clamps the right-hand member of sliding sleeve；It is described Waist slotted hole is easy to foward-push clamping jaw 31 to pass clamping sliding sleeve 29, and groove 291 make it that clamping sliding sleeve 29 fixes foward-push clamping jaw 31 Branch point boss 311 and fulcrum when being rotated as it.

In the present embodiment, described one end of foward-push clamping jaw 31, which is provided with, to be used for clamping the abutting projection that pushing sleeve 30 is engaged 312.The projection 312 that abuts is with clamping the raised R amounts that the travel path of pushing sleeve 30 is engaged；So it is easy to clamp pushing sleeve 30 During reciprocating motion, abut the one end of foward-push clamping jaw 31 and its outer fissure head end footpath is yearned for formation in clamping sliding sleeve 29 and stick up The trend risen, so as to promote the forward end of push rod 28 to move, makes the forward slip of guide pin bushing 5 in main shaft.

In the present embodiment, the fastening material drive mechanism includes being used to drive the drive bearing corner block for clamping pushing sleeve 30 33rd, the deep groove ball bearing 32 of pushing sleeve 30 is clamped for driving, for drive bearing corner block 33 and the shift fork of deep groove ball bearing 32 41 and promote shift fork 41 cylinder 38.The shift fork 41 is used for drive bearing corner block 33 and deep groove ball bearing 32, the transmission Bearing corner block 33 and deep groove ball bearing 32 are used to drive clamping pushing sleeve 30 to move back and forth.

It is shown as shown in Figure 2, Figure 3 and Figure 4 in the present embodiment, in addition to main spindle box body 1, main spindle box 1 is provided with overall double-deck knot Structure, middle interlayer is provided with air inlet and corresponding air outlet；The air inlet is provided with fan installing plate 46 and aerofoil fan 47.Specifically For the arrow of Fig. 4 marks is respectively the direction that cold wind enters and hot blast extruding is discharged, the rotation of the motor and main shaft 2 of such main shaft 2 The heat that discharges produced by high-speed cruising work is held in rotating shaft, can be by the axle that is equiped with the upper end of main spindle box body 1 Flow fan 47, the heat that box house is discharged is vortexed spinning drainage from casing interlayer, and thermal current is squeezed from bottom half Pressure goes out, and reaches great heat radiation effect, and by the heating produced by electro spindle, being strict controlled in heat up at room temperature does not allow to surpass Cross 8 DEG C ~ 12 DEG C of index.When electro spindle temperature exceedes upper limit index, CNC system meeting automatic alarm so can be controlled effectively The thermal coefficient of expansion of the atomic small thermal coefficient of expansion of spindle motor unit and workpiece material, shortens the pre- constant temperature of lathe start operation Time, production efficiency is improved, improve the uniformity for keeping part to be processed dimensional accuracy.

In the present embodiment, as Figure 1 and Figure 4, the rear end of main shaft 2 is equipped with encoder flange 22,22 sets of encoder flange Provided with encoder gear 23, the upper end of encoder gear 23 is provided with coding inductor 48；The rear end of encoder flange 22 is provided with use Brake apparatus when strength Milling Process.The brake apparatus is braked wheel 24, is additionally provided with flat key 25 in the endoporus of braked wheel 24, When needing to carry out strength Milling Process to part to be processed, main shaft 2 can be braked by braked wheel 24, will be processed Bar is fixed, and thus can be carried out strength milling to being processed bar, be made the dimensional accuracy and rough surface of part to be processed Degree all obtains stabilization.Specifically, in spindle motor unit rotary course, the indexing of spindle motor unit can be encoded by induction type Device connection spindle driver feeds back to CNC, can be with when needing to set the rotating speed and stepless indexing unspecified angle of spindle motor unit Send to instruct by CNC and spindle motor unit is sent to by spindle driver, then feedback, which is believed, to be detected to gear 23 by encoder Breath so that spindle motor unit can carry out accurate speed change and angle segmentation positioning.

Spindle motor unit uses the medium and small amount of passing through system so that the high speed sensitivity of spindle motor unit is less than 1.5s, positive and negative Turn, plus-minus rotating speed response susceptibility is less than 0.8s, indexing locking is reliable and stable, indexes positioning precision<5'.

In the present embodiment, the series model of the main shaft is 07-12 types, 15-20 types, 26 types or 32-38 types, wherein： The range of speeds of 07-12 types is that the range of speeds of 100-12000r/min, 15-20 type is 100-10000r/min, turn of 26 types Fast scope is that the range of speeds of 100-10000r/min and 32-38 types is 100-8000r/min.As shown in figure 5, being respectively to turn The abscissa of speed-power load performance diagram and rotating speed-torque diagram, wherein rotating speed-power characteristic figure is Rotating speed, unit is r/min, and ordinate is power load, and unit is KW；The abscissa of rotating speed-torque diagram is rotating speed, Unit is r/min, and ordinate is moment of torsion, and unit is N-m.Characteristic coefficient requirement by design parameter to series model main shaft, Its range of speeds, moment of torsion index and power factor are formulated, high torque is exported when especially setting the slow-speed of revolution, output reaches during high rotating speed High power load, and code requirement is made to motor material and production technology, make motor performance stable, temperature rise is limited to design standard Within the scope of.Thus the characteristic series of series of products electric motors function can be passed through experiment, the series standardized and state of practice progress Border is advanced to integrate with.

In the present embodiment, the rear and front end of main spindle box body 1 is respectively equipped with bearing block, and bearing block mounted in pairing mode has bearing, Internal space ring and external space ring is provided with the middle of pairing bearing in the bearing block；The main shaft, bearing block and bearing by front axle pressure cap 8, Bearing gland 20, preceding accurate locking nut 10 and the rear accurate pressure regulation of locking nut 21 are fixed afterwards.Specifically, the bearing block includes Front-end bearing pedestal 9 and rear bearing block 17；The bearing includes clutch shaft bearing 11 and second bearing 18；Internal space ring and external space ring is included in fore bearing Outer ring spacer 12 and rear bearing internal space ring and external space ring 19, can so adjust the precompression of bearing.Bearing block the inner further respectively has front Set 13 and rear interstage sleeve 16.The main shaft 2, bearing block 9 and bearing 11 are carried out by front axle pressure cap 8, preceding accurate locking nut 10 Adjustment fastening；Rear bearing block 17 and second bearing 18, rear bearing gland 20, rear bearing lock nut 21 carry out last precompressed and adjusted Whole and the geometric accuracy of main shaft 2 debugging positioning fastening.The configuration of the related physical dimension of the part is all high-precision close fit；Electricity The design of main axle unit employs modularization, series standardized, motor characteristic coefficient equally using international advanced parameters in series and Experimental data；Construction module optimizes to form seriation, and structure is reliable and stable, the taper hole circular runout precision of guide pin bushing 5 in electric axis< 0.003mm；The axial float precision of main shaft 2<0.0015mm；Cylindrical circular runout is less than 0.003mm before and after main shaft.

In the present embodiment, motor wound stator 14 and motor line winding rotor 15 are corresponded to installed in main spindle box body 1 and master respectively The middle-grade position of axle 2.The low pressure output characteristics parameter area that spindle motor unit is used for 118-220V, such low pressure current potential Output forms the operation of low current so that during spindle motor high-speed cruising, output of the heating less than high-voltage potential of motor, then leads to The optimization of series structure is crossed, extruding, air draft provided with aerofoil fan reach electro spindle in high-speed high-load long-play, By effect of the heating control of electro spindle within 8 DEG C ~ 12 DEG C that room temperature is reached the standard grade；Under maximum speed, noise decibel control exists 72dB（A）Within, add clamping device and during the lazy-tongs loaded-up of front end, the control of its noise decibel 76dB (A) with It is interior.

In the present embodiment, in addition to spindle driver and braking resistor.The accurate change of spindle motor unit can so be realized The function of speed, stepless indexing and accurate braking.

It is described above, only it is the utility model preferred embodiment, not makees any formal to the utility model Limitation, although the utility model is disclosed as above with preferred embodiment, but is not limited to the utility model, any to be familiar with sheet Technical professional, is not departing from the range of technical solutions of the utility model, is made when using the technology contents of the disclosure above A little change or the equivalent embodiment for being modified to equivalent variations, as long as being without departing from technical solutions of the utility model content, foundation The utility model technology refers to any simple modification, equivalent variations and the modification made to above example, belongs to this practicality In the range of new technique scheme.

Claims (9)

1. a kind of spindle motor unit of numerical control rip cutting turnning and milling complex centre application, including main shaft and the material folding dress that is arranged in main shaft Put, it is characterised in that：The clamping device includes push rod, is arranged at the fastening material drive mechanism at push rod rear portion, is arranged at top The clamping pushing sleeve at bar rear portion, be arranged at clamp the clampings sliding sleeve of pushing sleeve endoporus, the rear adjusting nut that is arranged at clamping sliding sleeve rear portion, It is arranged at and clamps a pair of foward-push clamping jaws of sliding sleeve, be arranged at guide pin bushing in the anterior main shaft of push rod, be arranged in main shaft in guide pin bushing The spring at bottom hole end, the collet for being arranged at spring at front end and the chuck front nut being arranged in main shaft outside guide pin bushing.

2. a kind of spindle motor unit of numerical control rip cutting turnning and milling complex centre application according to claim 1, it is characterised in that： The sliding sleeve that clamps is provided with a pair of waist slotted holes for supplying foward-push clamping jaw rotary moveable, and described clamping sliding sleeve one end is provided with and supplies foward-push Clamping jaw makees the groove of pivot point；Described foward-push clamping jaw one end, which is provided with, is used for branch point boss with fit depressions, it is described before The end of pushing-type clamping jaw is provided with the inclined-plane for being used for promoting push rod.

3. a kind of spindle motor unit of numerical control rip cutting turnning and milling complex centre application according to claim 1, it is characterised in that： Described foward-push clamping jaw one end, which is provided with, to be used for clamping the abutting projection that pushing sleeve is engaged.

4. a kind of spindle motor unit of numerical control rip cutting turnning and milling complex centre application according to claim 1, it is characterised in that： The fastening material drive mechanism includes the depth for being used to drive the drive bearing corner block for clamping pushing sleeve, clamp pushing sleeve for driving Ditch ball bearing, the shift fork for drive bearing corner block and deep groove ball bearing and the cylinder for promoting shift fork.

5. a kind of spindle motor unit of numerical control rip cutting turnning and milling complex centre application according to claim 1, it is characterised in that： Also include main spindle box body, main spindle box body is provided with air inlet and corresponding air outlet；The air inlet is provided with fan installing plate and axle Flow fan.

6. a kind of spindle motor unit of numerical control rip cutting turnning and milling complex centre application according to claim 1, it is characterised in that： The rear-end of spindle is equipped with encoder flange, and encoder flange sleeve is provided with encoder gear, and encoder gear upper end is provided with coding Inductor；The encoder flange rear end is provided with the brake apparatus for strength Milling Process.

7. a kind of spindle motor unit of numerical control rip cutting turnning and milling complex centre application according to claim 1, it is characterised in that： The main spindle box body rear and front end is respectively equipped with bearing block, and bearing block mounted in pairing mode has the pairing axle in bearing, the bearing block Hold middle provided with internal space ring and external space ring；The main shaft, bearing block and bearing pass through front axle pressure cap, rear bearing gland, preceding accurate locking Nut and rear accurate locking nut pressure regulation are fixed.

8. a kind of spindle motor unit of numerical control rip cutting turnning and milling complex centre application according to claim 5, it is characterised in that： Motor wound stator and motor line winding rotor correspond to the middle-grade position installed in main spindle box body and main shaft respectively.

9. a kind of spindle motor unit of numerical control rip cutting turnning and milling complex centre application according to claim 1, it is characterised in that： Also include spindle driver and braking resistor.