CN103887931B - Motor numerical control assembling device and method - Google Patents
Motor numerical control assembling device and method Download PDFInfo
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- CN103887931B CN103887931B CN201410128132.2A CN201410128132A CN103887931B CN 103887931 B CN103887931 B CN 103887931B CN 201410128132 A CN201410128132 A CN 201410128132A CN 103887931 B CN103887931 B CN 103887931B
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Abstract
The present invention relates to a kind of motor numerical control assembling device and method, the base headstock arranges addendum cone along the axis of prepackage motor is unsettled; Addendum cone is through the central through hole of stator retaining element; Base right-hand member is along the axial arranged slide rail of motor, and the stator retaining element for fixed stator assembly can drive stator module along this slide rail rectilinear motion under driven by servomotor; Adjusting center tailstock being arranged the flexible offset shifts of energy rotor axis is top, top be horizontally disposed with and can stretch in prepackage rotor axis of electric back-end central hole locate; Addendum cone and top between reserved axial length be greater than the axial length of prepackage motor, and the top and shaft centre line of addendum cone and the central through hole of stator retaining element are arranged with one heart, make addendum cone and toply can clamp the two ends, left and right of withstanding prepackage motor shaft respectively.Automatically can complete assembling to motor, solve the problem of traditional assembly method rotor assembly magnetic-adsorption on stator module, greatly improve assembly quality and efficiency of assembling.
Description
Technical field
The present invention relates to motor mounting technology field, be specifically related to a kind of Numeric Control Technology that adopts and special equipment and the method for assembling is automatically carried out to motor.
Background technology
At present, that generally acknowledges comprises the steps: the technique that middle and small motor carries out assembling
1. the preparation before assembling
(1) motor base (stator) to be assembled, electricity are driven (rotor) and other annex clean out foreign matter after by the cotton wiped clean speckling with gasoline;
(2) inspection stator and rotor winding insulation winding, outlet box insulate and are not less than the requirement not damaged of regulation;
(3.) check channel mould, tooth support, whether winding overhang colligation and cross-over block loosen and come off, whether exceeding without latitude or tied rope of channel mould and colligation is unshakable in one's determination surperficial;
2. the pre-assembled of rolling bearing
Motor rolling bearing uses in pairs in motor, be arranged on motor shaft load end and unsupported end two ends respectively, be fixed on electric machine stand (stator winding is in support) end cap at every one end housing washer, inner ring is fixed on rotor axle stretch end, work the motion supporting the rotor relatively rotated, mainly bear the footpath based on radial load, axial connected load, also two-way axle positioning action is played to rotor axis of electric simultaneously.
In motor assembly technology, the pre-assembled mode of rolling bearing has two kinds: a kind of is be pre-assembled on the axle journal of rotor axis of electric by bearing, electric motor end cap with bearing pedestal is arranged on after on housing washer by rotor after bore of stator central axis inserts in electric machine stand again, electric motor end cap is fixed on electric machine stand; Another kind is pre-assembled in by bearing on electric motor end cap bearing pedestal, will be arranged on after on housing washer be again fixed on electric machine stand by electric motor end cap after rotor is inserted in electric machine stand along bore of stator central axis with bearing electric machine end cap.
No matter be that assembly method all has shrink-on and cooling jacket two kinds of mounting processs.If need rolling bearing to be preloaded onto on motor bearings neck, then rolling bearing to be installed is placed in machine oil be heated to about 100 DEG C 5 ~ 10 minutes (sealed bearing employing electrical heating methods) during shrink-on, when being inserted on rotor axis of electric neck by bearing rapidly after inner ring swell, treat that bearing cooling meat rear bearing inner ring is just fixed on rotor axle journal tightly; If need rolling bearing to be preloaded onto on electric motor end cap, be then end cap be placed in machine oil be heated to about 100 DEG C 5 ~ 10 minutes, when being pressed in end-cover axle bearing by bearing outer ring rapidly after end-cover axle bearing swell, treat that end-cover axle bearing cooling meat rear bearing outer ring is just fixed in electric motor end cap bearing pedestal tightly.
So-called cooling jacket is exactly that bearing holder (housing, cover) installs on rotor axle journal or in end-cover axle bearing by the mode adopting external force to cold pressing.If bearing holder (housing, cover) is installed on rotor axle journal, then bearing is enclosed within advance (internal diameter is less than rotor axle journal) on rotor axis of electric elongated end, then an internal diameter 2 ~ 3mm larger than axle journal is used, the sleeve that the copper (or soft metal) that thickness is less than bearing inner race thickness is made packs into rotor axis of electric from the outer end of axle, the end face that sleeve is inserted and bearing inner race end face close contact, finally firmly beat from the sleeve other end, until bearing is in place; If need rolling bearing to be preloaded onto on electric motor end cap, then bearing is placed in advance on electric motor end cap bearing pedestal, then an external diameter 2 ~ 3mm less of bearing outer ring is used, the end face of sleeve one end that the copper (or soft metal) that thickness is less than bearing outer ring thickness is made and bearing outer ring end face close contact, finally firmly beat from the sleeve other end, until bearing is in place.
For the production that batch is large, some enterprise is that raising assembly quality and efficiency also adopt forcing press to be pressed into by bearing on rotor axle journal or in electric motor end cap bearing pedestal.But commonly No. 5 supports and following micro-machine adopt cooling jacket mode.
If direct current machine or wound rotor alternating current machine install bearing after then needing formerly to install commutator or collector ring again.
3. rotor is loaded bore of stator
(1) motor base (stator) is kept flat on the table;
(2) rotor directly inserts from motor base one end along stator winding axis with hand by special small-sized or micromachine.To such as slightly bigger motor, due to weight exceed staff hold Beijing South Maxpower Technology Co. Ltd's power time, generally all lift by specific purpose tool, as rotor hoisting device etc.The running-on that hoisting device is arranged by top lifting boom, the linking arm connected up and down and bottom level forms.Running-on is the sleeve pipe of an internal diameter slightly larger than motor-shaft extending end.Lifting mode is: by casing pipe sleeve one end (being generally motor load end) at motor-shaft extending end, lifting rope one end is enclosed within lifting boom, adjust the lifting of lifting center, the stator winding the central axis then other end of rotor axis of electric being aimed at motor base one end inserts.After rotor lifting puts in place substantially, gently rotor is put down and set aside on stator, hoisting device is taken off.
4. the installation of electric motor end cap
Because bearing outer ring and electric motor end cap bearing pedestal are also interference fit, therefore, also there is heat to install and cold installation (cold pressing into) two kinds of modes by technological requirement when mounted, but generally all adopt cold mounting means.Mounting process is generally: be enclosed within respectively axle from rotor axis of electric two ends by forward and backward bearing (ball) cover, slowly lift by crane after on the rotor shaft extension end overlapping end cap outer end respectively with lifting rope, rotor lifting is rotated one end end cap to during stator winding axis, end cap is aimed at the seam on motor base, withstand in motor shaft other end hard object, then use sleeve (internal diameter is slightly larger than motor shaft) to pack into motor shaft elongated end and make sleeve end face and bearing cap end face close contact, finally firmly beat from the sleeve other end, until electric motor end cap is in place.With same method, the other end is installed after installing one end.The end cap at two ends all installs rear (seam alignment), is tightened by fastening bolt.
5. the installation of other parts
Fan is packed into from axle stretch end, install after dropping place with after screw fastening by fan guard cover.
But there are the following problems for the technique of above-mentioned motor installation and assembling:
1. when covering in mounted motor rear and front end, rotor is sling by crane to be suspended in stator winding chamber, sleeve is utilized to apply External Force Acting in electric motor end cap, when end-cover axle bearing is squeezed into bearing outer ring, uneven due to active force, cause rotor axially producing irregular motion by reaction with radial in stator winding chamber, make rotor outer wall and the grazing of stator winding cavity wall and produce damage; Meanwhile, the uneven active force of this applying also very easily damages bearing, clamping stagnation when motor is run;
2. due to bore of stator axis and armature spindle axis concentricity requirement higher, adopt stator hoisting mode to carry out axle center positioning precision poor, cause rotor electromagnetic force moment unbalance;
3. unstable product quality during batch production, rework rate is higher.
4. the rotor assembly of servomotor is permanent magnet, has powerful magnetic force, and the slightly different axle of rotor assembly and stator module can cause the imbalance of magnetic force, makes rotor assembly be adsorbed on stator module, cannot separate by manpower.
Summary of the invention
In order to overcome the installation quality problem that existing motor assembly technology causes, the invention provides a kind of motor based on Numeric Control Technology and assemble special equipment and method, this equipment can not only complete assembling to motor automatically, but also do not damage bearing and motor stator and rotor surface, key solves the problem of traditional assembly method rotor assembly magnetic-adsorption on stator module, greatly improves assembly quality and efficiency of assembling.
The present invention for the adopted technical scheme that solves the problem as follows:
A kind of motor numerical control assembling device, is characterized in that: comprise base, the headstock, stator retaining element, tailstock;
The left end of base arranges the headstock, and the headstock arranges horizontal spindle along the axis of prepackage motor is unsettled, and main shaft end is the addendum cone that can stretch into prepackage rotor axis of electric front end centre bore; Addendum cone is through the central through hole of stator retaining element;
The right-hand member of the headstock, along the axial arranged slide rail of motor, the stator retaining element for fixed stator assembly can drive stator module along this slide rail rectilinear motion under driven by servomotor;
The right-hand member of base arranges another axial slide rail, and tailstock to be arranged on this another slide rail and to be locked by retaining mechanism; Tailstock holds out against air cylinder driven by rotor and can along this another slide rail rectilinear motion; Adjusting center tailstock being arranged the flexible offset shifts of energy rotor axis is top, is toply horizontally disposed with, and left end is to stretch into the tip of locating in prepackage rotor axis of electric back-end central hole;
Addendum cone and top between reserved axial length be greater than the axial length of prepackage motor, and the top and shaft centre line of addendum cone and the central through hole of stator retaining element are arranged with one heart, make addendum cone and toply can clamp the two ends, left and right of withstanding prepackage motor shaft respectively.
In technique scheme, the top concrete structure of adjusting center is: tailstock is fixedly installed mohs bush in the horizontal direction, and mohs bush outer surface is circular cylinder body, inside establishes major part towards the hollow taper hole of axial horizontal left end; The head end of Morse taper shank is cylindrical shell, and afterbody connects the long handle of conical shell shape, and this long handle stretches in the taper hole of mohs bush; The left side of the head end cylindrical shell of Morse taper shank is arranged opening internal taper hole outwardly; Toply be horizontally disposed with, left end is to stretch into the tip in prepackage rotor axis of electric back-end central hole, and right-hand member contacts with butterfly spring and is co-located at an end closure and in horizontally disposed adjusting center positioning sleeve; The right side sealing end of adjusting center positioning sleeve is sphere tail end, and the internal taper hole of the head end cylindrical shell of Morse taper shank coordinates with the sphere tail end sliding contact of adjusting center positioning sleeve; The head end cylindrical shell of adjusting center positioning sleeve and Morse taper shank is all arranged in a thread bush, and adjusting center positioning sleeve is coordinated by self-aligning bearing activity with between thread bush.
In technique scheme, top tip is arranged in the sleeve pipe of adjusting center positioning sleeve, and the sleeve pipe left side of tip distance adjusting center positioning sleeve is setpoint distance, and this setpoint distance is not more than prepackage rotor shaft rear end extension elongation.
In technique scheme, the concrete structure of stator retaining element for: the bottom of stator retaining element is arranged on a slide rail described in this by axial slide slide carriage, and axial slide slide carriage is by driven by servomotor and can along this slide rail rectilinear motion; Axial slide slide carriage arranges slide seat body, and stator retaining element is on slide seat body; Slide seat body be vertically arrange and plate face perpendicular to the slab of a described slide rail, the central through hole of stator retaining element is offered at slab center, and central through hole radial outer periphery arranges stepped hole with one heart, and elastic positioning element to be arranged in stepped hole and to be fixed on slide seat body; Elastic positioning element cross section is circular, has the outer rim seam protruding slide seat body right side vertically towards right-hand member; The radial outer periphery of elastic positioning element, slide seat body is also fixedly installed clamping cylinder, the projecting shaft of clamping cylinder is arranged clamping cylinder clamping plate, and the initial position of clamping cylinder clamping plate is that horizontal cross is arranged and vertical with clamping cylinder projecting shaft.
In technique scheme, elastic positioning element angle head cylindrical and facing flange seam coordinate with the front end positioning spigot of stator module; Stator module is fixed on slide seat body by clamping cylinder clamping plate.
In technique scheme, slide seat body is fixedly installed 2-3 clamping cylinder; When clamping cylinder ante-chamber pressurizes, clamping cylinder clamping plate are longitudinally or while axial linear movement, from horizontal cross position 90-degree rotation, then rectilinear motion is done, until the locating flange of clamping motor stator module, when the back cavity pressurization of cylinder, first clamping cylinder clamping plate do rectilinear motion and unclamp locating flange, and then clamping cylinder clamping plate 90-degree rotation is to horizontal cross position.
In technique scheme, axial slide slide carriage is also provided with horizontal cross guide rail, horizontal cross guide rail and a described guide rail are vertical in 90 ° in the horizontal direction; There is cross slide axial slide slide carriage upper end, and cross slide is connected with axial slide slide carriage by bottom guide groove, and cross slide is driven by screw mandrel and can do horizontal cross feed motion; Cross slide is arranged stator support frame and stator high-low regulating; Slide seat body is fixed on cross slide by stator support frame.
In technique scheme, a described slide rail and another axial slide rail coincidence or parallel up and down.
In technique scheme, the headstock comprises the chuck on U-shaped seat and U-shaped seat, and main shaft is through chuck and by angle thrust bearing by chuck support.
Adopt the motor assembly method of above-mentioned motor numerical control assembling device, it is characterized in that comprising the steps:
To all parts of motor clean, check and the preparation such as Insulation test work;
(2) after on axle rolling bearing being pre-assembled to rotor two ends, the end cap of unsupported for motor end is assembled on the outer ring of unsupported end bearing, forms the rotor assembly just installed; , stator and front end housing, rear end cap are assembled meanwhile, form the stator module just installed; Front end housing has front end positioning spigot;
(3) utilize stator retaining element to carry out the fixing of stator module and location: the front end housing positioning spigot endoporus of stator module is aimed at the elastic positioning element seam on motor numerical control assembling device, behind seam location, clamping cylinder clamping plate then yearn for front end rectilinear motion until compress the locating flange of stator module along motor shaft around respective projecting shaft 90-degree rotation, are fixed to the slide seat body at motor numerical control assembling device after stator module is located;
(4) rotor assembly is placed between the headstock of motor numerical control assembling device and tailstock and is fixedly clamped: addendum cone stretches in the centre bore of armature spindle front end, toply stretch in armature spindle back-end central hole; Afterwards, rotor holds out against cylinder and stretches out toward front end, drives tailstock and toply to move forward, contact to realize rotor assembly location by addendum cone respectively and clamps with top from the compression at armature spindle two ends; Meanwhile, adjustment position when rotor holds out against the assembling of cylinder also for the motor of different model; Drive behind top arrival clamping and positioning position until tailstock, tailstock is locked by locking device; The butterfly spring of top afterbody ensure top all the time with armature spindle back-end central hole close contact to realize feeling relieved;
(5) slide servomotor effect, drives slide seat body to move axially along motor by axial slide slide carriage, and the centre bore that the stator module on slide seat body synchronously moves vertically and makes rotor assembly pass stator module carries out combination assembling;
At stator module and electric rotor assembly in conjunction with in assembling process, when the rear bearing of rotor assembly enters the moment of the rear axle bearing bore of stator module, certainly lead to interfering edge, now, because stator module is positioned on elastic positioning element, by the distortion of elastic positioning element under stressed, stator module will inevitably be made along the direction of interfering edge according to the journal offset of rotor assembly to realize disalignment compensation of error; Simultaneously, be contained in top meeting in adjusting center positioning sleeve along with the axis of rotor assembly along the direction rotor assembly of interfering edge swings on the inner conical surface of Morse taper shank front end, compensate disalignment error, rear bearing loaded smoothly and does not damage bearing, and avoiding rotor assembly magnetic-adsorption on stator module.
Relative to prior art, beneficial effect of the present invention is:
In the assembling process of motor, the fore bearing of rotor assembly will coordinate with the front axle bearing bore of stator module, the rear bearing of rotor assembly will coordinate with the rear axle bearing bore of stator module, the cooperation at two bearings place is situated between in small―gap suture with between excessively coordinating, and stator module and rotor assembly are all rigid bodies, all there is disalignment error in rotor assembly and stator module self front and back bearings; Theoretically, two out-of-alignment rigid bodies will be realized undamaged assembling by prior art, and can not realize, this new technology solves above problem, and its key technology is as follows:
1) motor assembly technology has been innovated, the right-hand member Position Design of rotor assembly can the adjusting center locating centre of offset angle, axial force is by adjusting center positioning sleeve, self-aligning bearing off-load on tailstock, and the top stressed power being always butterfly spring, protects centre bore not impaired; Adjusting center locating centre is together with the flexible setting element of stator module, and the assembly quality problem that the common disalignment compensating stator module and rotor assembly causes, particularly solves the problem of traditional assembly method rotor assembly magnetic-adsorption on stator module.
2) have employed elastomeric material, as the stator module setting element of polyurethane material, can by the distortion of setting element under stressed, compensate the assembling difficulty that stator module and rotor assembly disalignment cause, improve assembly quality.
3) change the horizontal assembling of motor into by the vertical assembling of motor, facilitate the lifting of motor, improve efficiency of assembling.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is described in further detail:
Figure 1 shows that the rotor assembly of the prepackage according to the present invention's assembling.
Figure 2 shows that the stator module of the prepackage according to the present invention's assembling.
Fig. 3 is the motor numerical control assembling device structural representation according to enforcement of the present invention.
Fig. 4 is tailstock of the present invention and adjusting center top tip structure schematic diagram.
Fig. 5 is that rotor assembly of the present invention holds out against schematic diagram.
Fig. 6 is stator retaining element structural representation of the present invention.
Embodiment
According to motor numerical control assembling device of the invention process, as shown in figures 3 to 6, total arrangement as shown in Figure 3.Holding out against the functional parts such as cylinder 7 primarily of base 8, tailstock 5, the headstock 1, stator retaining element 4, rotor, to form each component function as follows:
Base 8 comprises the lathe bed and base that are fixed together, mainly its supporting role.Lathe bed is equipped with each critical piece, material is cast iron.Longitudinal rail (also claiming motor shaft direction guiding rail) is had at lathe bed left end, axial slide slide carriage 4.6 bottom stator retaining element 4 is contained on the longitudinal rail of lathe bed left end, can carry out linear longitudinal movement under slide servomotor 4.7 acts on along lathe bed longitudinal guide.
Axial slide slide carriage 4.6 is provided with horizontal cross guide rail, and horizontal cross guide rail and longitudinal rail are vertical in 90 ° in the horizontal direction; There is cross slide axial slide slide carriage 4.6 upper end, and cross slide is connected with axial slide slide carriage 4.6 by base channel, and when driving screw mandrel to rotate, cross slide can do horizontal cross feed motion; Horizontal cross guide rail is preferably dovetail groove guide rail; Cross slide is arranged stator support frame and stator high-low regulating, stator support frame supports stator module 3 at vertical direction, and stator high-low regulating can in the vertical height of the small adjustment motor stator of vertical direction.
The supplying position of slide plate and slide carriage is controlled by digital control system, under same pedestal number can be adapted to, the motor assembling of different size.
The headstock 1 is arranged on the left end of lathe bed, comprises the chuck 1.2 on U-shaped seat and U-shaped seat, and main shaft is passed chuck and supported by chuck 1.2 by angle thrust bearing.Main shaft end is the addendum cone 1.1 that can stretch into prepackage rotor axis of electric front end centre bore; Addendum cone 1.1 is through the central through hole of stator retaining element 4.In motor rotor component 3, motor shaft front end 3.3 is withstood by addendum cone 1.1; Recessed to drive by the seam on the back end cover for motor 3.5 on the rotor assembly 3 that withstands only convex aligning stator module 2 rear end cap 2.2.The central through hole concentric (as shown in Figure 5) of the shaft centre line of addendum cone 1.1 and tailstock 5 and top 5.6 shaft centre lines be installed on tailstock 5 and stator retaining element 4.
Tailstock 5 is contained in (another longitudinal rail can overlap with aforesaid longitudinal rail) on another longitudinal rail of lathe bed right-hand member, can by rotor hold out against cylinder 7 act on and along this another longitudinal rail carry out longitudinal direction move linearly and adjustment whether rotor assembly 3 is contacted, by retaining mechanism fixed position on tailstock 5 after putting in place, top 5.6 axis of spindles are parallel with lathe bed longitudinal guide, top 5.6 and the butterfly spring 5.5 of top afterbody be longitudinally placed in adjusting center positioning sleeve 5.4, adjusting center positioning sleeve 5.4 is placed in thread bush 5.3, coordinated by self-aligning bearing 5.8 activity between adjusting center positioning sleeve 5.4 with thread bush 5.3, the head end cylindrical shell of Morse taper shank 5.2 stretches in the other end of thread bush 5.3, and the internal taper hole of the head end cylindrical shell of Morse taper shank 5.2 coordinates with the sphere tail end sliding contact of adjusting center positioning sleeve 5.4, the afterbody of Morse taper shank 5.2 head end cylindrical shell connects the long handle of conical shell shape, and this long handle stretches in the taper hole of mohs bush 5.1, and mohs bush 5.1 periphery is circular cylinder body, the circular cylinder body part (being greater than 1/2nd barrel lenght) of mohs bush 5.1 to stretch in tailstock 5 and fixes with tailstock 5.
As shown in Figure 6, be stator retaining element 4 of the present invention, be arranged on and keep left on the slide seat body 4.3 of end, slide seat body 4.3 is fixed on stator support frame.Slide seat body 4.3 is a slab, and slab center offers through hole, and through hole periphery arranges stepped hole with through hole is concentric, and stepped hole right-hand member fills elastic positioning element 4.4, and elastic positioning element 4.4 contacts with each step surface of stepped hole and coordinates and fixed by screw; Elastic positioning element 4.4 cross section is circular, has vertically towards the outer rim seam that right-hand member protrudes; The radial outer periphery of elastic positioning element 4.4, slide seat body 4.3 is also fixedly installed 2-3 clamping cylinder 4.1, the projecting shaft of clamping cylinder 4.1 is arranged clamping cylinder clamping plate 4.2, the initial position of clamping cylinder clamping plate 4.2 is that horizontal cross is arranged and vertical with clamping cylinder 4.1 projecting shaft; The action of clamping cylinder 4.1 comprises rotation and straight line compresses two actions: when cylinder ante-chamber pressurizes, clamping cylinder clamping plate 4.2 are longitudinally or while axial linear movement, from horizontal cross position 90-degree rotation, then rectilinear motion is done, until the locating flange of clamping motor stator module 2, when the back cavity pressurization of cylinder, first clamping cylinder clamping plate 4.2 do rectilinear motion and unclamp locating flange, and then clamping cylinder clamping plate 4.2 90-degree rotation is to horizontal cross position;
Preferred elastomeric setting element 4.4 adopts PU elastomeric material to make, and relies on cylindrical and facing flange seam, coordinates locate with the front end positioning spigot 2.4 of stator module 2.By clamping cylinder clamping plate 4.2, stator module 2 is fixed on slide seat body 4.3 behind location.
After adopting motor numerical control assembling device of the present invention, motor assembly method is as follows:
1) complete before assembling all parts clean, check and the preparation (the same with the assembly technology of generally acknowledging) such as Insulation test work;
2) after rolling bearing (fore bearing 3.2 and rear bearing 3.4) being pre-assembled on the axle at rotor 3.1 two ends (the same with the assembly technology of generally acknowledging), on the outer ring end cap (being generally back end cover for motor 3.5) of unsupported for motor end being assembled to unsupported end bearing (rear bearing 3.4) (as shown in Figure 1), form the rotor assembly 3 just installed; Meanwhile, according to the mode of Fig. 2, stator core 2.1, stator winding 2.7 are assembled with front end housing 2.6, rear end cap 2.2, forms the stator module 2 just installed; Front end housing 2.6 has front end positioning spigot 2.4; Front axle bearing bore 2.5 in front end housing 2.6 and rear end cap 2.2 and rear axle bearing bore 2.3 vacant,
3) adjust height and the horizontal level transversely of stator retaining element, make stator module center line concentric with addendum cone center line;
4) as Fig. 3-Fig. 5, stator retaining element 4 is utilized to carry out the fixing of stator module 2 and location: the initial position of the clamping cylinder clamping plate 4.2 of stator retaining element 4 is that horizontal cross is arranged and vertical with clamping cylinder 4.1 projecting shaft, the addendum cone 1.1 of the headstock 1 enters from the centre bore front end of stator module 2 and stretches out from rear end, afterwards front end housing positioning spigot 2.4 endoporus of stator module 2 is aimed at elastic positioning element 4.4 seam on motor numerical control assembling device, behind seam location, clamping cylinder clamping plate 4.2 then yearn for front end rectilinear motion until compress the locating flange of stator module 2 along motor shaft around respective projecting shaft 90-degree rotation, to be fixed on the slide seat body 4.3 of motor numerical control assembling device (as shown in Figure 6 after stator module 2 is located, general 2-3 of clamping cylinder 4.1, 1 is only drawn) in figure, the action of clamping cylinder 4.1 comprises rotation and compresses two actions: when cylinder ante-chamber pressurizes, clamping cylinder clamping plate 4.2 are while rectilinear motion, from horizontal cross position 90-degree rotation, then rectilinear motion is done, until the locating flange of clamping motor stator module, when the back cavity pressurization of cylinder, first clamping cylinder clamping plate 4.2 do rectilinear motion and unclamp locating flange, and then clamping cylinder clamping plate 4.2 90-degree rotation is to horizontal cross position,
5) as Fig. 3-Fig. 6, lifted by rotor assembly 3 or be manually placed between the headstock 1 of motor numerical control assembling device and tailstock 5, armature spindle front end 3.3 centre bore and addendum cone 1.1 close contact through stator module 2 centre bore are to realize locating; Tailstock 5 one end, top 5.6 in adjusting center positioning sleeve 5.4 and armature spindle rear end 3.6 centre bore close contact; Afterwards, rotor holds out against cylinder 8 and stretches out toward front end, drive tailstock 5 and top 5.6 move forward and realize armature spindle front and back end along motor shaft to location clamping; Meanwhile, adjustment position when rotor holds out against the assembling of cylinder 8 also for the motor of different model, after arrival clamped position, tailstock 5 is locked by locking device; The butterfly spring 5.5 of top afterbody ensure top 5.6 all the time with armature spindle rear end 3.6 centre bore close contact to realize feeling relieved;
6) as Fig. 3-Fig. 6, slide servomotor 4.7 acts on, drive slide seat body 4.3 to move axially along motor by axial slide slide carriage 4.6, the stator module 2 on slide seat body 4.3 synchronously moves vertically and makes rotor assembly 3 carry out combination assembling through the centre bore of stator module 2;
At stator module 2 and electric rotor assembly 3 in conjunction with in assembling process, when the rear bearing 3.4 of rotor assembly 3 enters the moment of the rear axle bearing bore 2.3 of stator module, certainly lead to interfering edge, now, because stator module 2 is positioned on elastic positioning element 4.4, by the distortion of elastic positioning element 4.4 under stressed, stator module 2 will inevitably be made along the direction of interfering edge according to the journal offset of rotor assembly 3 to realize disalignment compensation of error; Meanwhile, being contained in top 5.6 in adjusting center positioning sleeve 5.4 can swing on the inner conical surface of Morse taper shank 5.2 front end along with the axis of rotor assembly 3 along the direction rotor assembly of interfering edge, compensates disalignment error, rear bearing is loaded smoothly and does not damage bearing; Be fitted to each other in process, axial force is very large, and be protection centre bore, axial force passes through adjusting center positioning sleeve 5.4, self-aligning bearing 5.8 off-load on tailstock 5, the top 5.6 stressed power being always butterfly spring 5.5.
In the assembling process of motor, the fore bearing of rotor assembly 3 will coordinate with the front axle bearing bore of stator module 2, the rear bearing of rotor assembly 3 will coordinate with the rear axle bearing bore of stator module 2, the cooperation at two bearings place is situated between in small―gap suture with between excessively coordinating, and stator module 2 and rotor assembly 3 are all rigid bodies, all there is disalignment error in rotor assembly 3 and self front and back bearings of stator module 2; Theoretically, two out-of-alignment rigid bodies be realized undamaged assembling, can not realize, this new technology solves above problem, and its key technology is as follows:
(1) innovated motor assembly technology, the right-hand member Position Design of rotor assembly can the adjusting center locating centre of offset angle, together with the flexible setting element of stator module, and assembly quality problem that the common disalignment compensating stator module and rotor assembly causes.
(2) have employed elastomeric material, as the stator module setting element of polyurethane material, can by the distortion of setting element under stressed, compensate the assembling difficulty that stator module and rotor assembly disalignment cause, improve assembly quality.
(3) change the horizontal assembling of motor into by the vertical assembling of motor, facilitate the lifting of motor, improve efficiency of assembling.
Claims (9)
1. a motor numerical control assembling device, is characterized in that: comprise base, the headstock, stator retaining element, tailstock;
The left end of base arranges the headstock, and the headstock arranges horizontal spindle along the axis of prepackage motor is unsettled, and main shaft end is the addendum cone that can stretch into prepackage rotor axis of electric front end centre bore; Addendum cone is through the central through hole of stator retaining element;
The right-hand member of the headstock, along the axial arranged slide rail of motor, the stator retaining element for fixed stator assembly can drive stator module along this slide rail rectilinear motion under driven by servomotor;
The right-hand member of base arranges another axial slide rail, and tailstock to be arranged on this another slide rail and to be locked by retaining mechanism; Tailstock holds out against air cylinder driven by rotor and can along this another slide rail rectilinear motion; Adjusting center tailstock being arranged the flexible offset shifts of energy rotor axis is top, is toply horizontally disposed with, and left end is to stretch into the tip in prepackage rotor axis of electric back-end central hole;
Addendum cone and top between reserved axial length be greater than the axial length of prepackage motor, and the top and shaft centre line of addendum cone and the central through hole of stator retaining element are arranged with one heart, make addendum cone and toply can clamp the two ends, left and right of withstanding prepackage motor shaft respectively;
Top concrete structure is: tailstock is fixedly installed mohs bush in the horizontal direction, and mohs bush outer surface is circular cylinder body, inside establishes major part towards the hollow taper hole of axial horizontal left end; The head end of Morse taper shank is cylindrical shell, and afterbody connects the long handle of conical shell shape, and this long handle stretches in the taper hole of mohs bush; The left side of the head end cylindrical shell of Morse taper shank is arranged opening internal taper hole outwardly; Toply be horizontally disposed with, left end is to stretch into the tip in prepackage rotor axis of electric back-end central hole, and right-hand member contacts with butterfly spring and is co-located at an end closure and in horizontally disposed adjusting center positioning sleeve; The right side sealing end of adjusting center positioning sleeve is sphere tail end, and the internal taper hole of the head end cylindrical shell of Morse taper shank coordinates with the sphere tail end sliding contact of adjusting center positioning sleeve; The head end cylindrical shell of adjusting center positioning sleeve and Morse taper shank is all arranged in a thread bush, and adjusting center positioning sleeve is coordinated by self-aligning bearing activity with between thread bush.
2. motor numerical control assembling device according to claim 1, it is characterized in that: top tip is arranged in the sleeve pipe of adjusting center positioning sleeve, and the sleeve pipe left side of tip distance adjusting center positioning sleeve is setpoint distance, this setpoint distance is not more than prepackage rotor shaft rear end extension elongation.
3. motor numerical control assembling device according to claim 2, it is characterized in that: the concrete structure of stator retaining element for: the bottom of stator retaining element is arranged on a slide rail described in this by axial slide slide carriage, and axial slide slide carriage is by driven by servomotor and can along this slide rail rectilinear motion; Axial slide slide carriage arranges slide seat body, and stator retaining element is on slide seat body; Slide seat body be vertically arrange and plate face perpendicular to the slab of a described slide rail, the central through hole of stator retaining element is offered at slab center, and central through hole radial outer periphery arranges stepped hole with one heart, and elastic positioning element to be arranged in stepped hole and to be fixed on slide seat body; Elastic positioning element cross section is circular, has the outer rim seam protruding slide seat body right side vertically towards right-hand member; The radial outer periphery of elastic positioning element, slide seat body is also fixedly installed clamping cylinder, the projecting shaft of clamping cylinder is arranged clamping cylinder clamping plate, and the initial position of clamping cylinder clamping plate is that horizontal cross is arranged and vertical with clamping cylinder projecting shaft.
4. motor numerical control assembling device according to claim 3, is characterized in that: elastic positioning element angle head cylindrical and facing flange seam coordinate with the front end positioning spigot of stator module; Stator module is fixed on slide seat body by clamping cylinder clamping plate.
5. the motor numerical control assembling device according to claim 3 or 4, is characterized in that: slide seat body is fixedly installed 2-3 clamping cylinder; When clamping cylinder ante-chamber pressurizes, clamping cylinder clamping plate are longitudinally or while axial linear movement, from horizontal cross position 90-degree rotation, then rectilinear motion is done, until the locating flange of clamping motor stator module, when the back cavity pressurization of cylinder, first clamping cylinder clamping plate do rectilinear motion and unclamp locating flange, and then clamping cylinder clamping plate 90-degree rotation is to horizontal cross position.
6. motor numerical control assembling device according to claim 5, is characterized in that: axial slide slide carriage is also provided with horizontal cross guide rail, and horizontal cross guide rail and a described guide rail are vertical in 90 ° in the horizontal direction; There is cross slide axial slide slide carriage upper end, and cross slide is connected with axial slide slide carriage by bottom guide groove, and cross slide is driven by screw mandrel and can do horizontal cross feed motion; Cross slide is arranged stator support frame and stator high-low regulating; Slide seat body is fixed on cross slide by stator support frame.
7. the motor numerical control assembling device according to claim 1 or 3 or 4 or 6, is characterized in that: a described slide rail and another axial slide rail coincidence or parallel up and down.
8. motor numerical control assembling device according to claim 7, is characterized in that: the headstock comprises the chuck on U-shaped seat and U-shaped seat, and main shaft is through chuck and by angle thrust bearing by chuck support.
9. adopt the motor assembly method of one of the claims 1-8 described motor numerical control assembling device, it is characterized in that comprising the steps:
To all parts of motor clean, check and Insulation test preparation;
(2) after on axle rolling bearing being pre-assembled to rotor two ends, the end cap of unsupported for motor end is assembled on the outer ring of unsupported end bearing, forms the rotor assembly just installed; , stator and front end housing, rear end cap are assembled meanwhile, form the stator module just installed; Front end housing has front end positioning spigot;
(3) utilize stator retaining element to carry out the fixing of stator module and location: the front end housing positioning spigot endoporus of stator module is aimed at the elastic positioning element seam on motor numerical control assembling device, behind seam location, clamping cylinder clamping plate then yearn for front end rectilinear motion until compress the locating flange of stator module along motor shaft around respective projecting shaft 90-degree rotation, are fixed to the slide seat body at motor numerical control assembling device after stator module is located;
(4) rotor assembly is placed between the headstock of motor numerical control assembling device and tailstock and is fixedly clamped: addendum cone stretches in the centre bore of armature spindle front end, toply stretch in armature spindle back-end central hole; Afterwards, rotor holds out against cylinder and stretches out toward front end, drives tailstock and toply to move forward, contact to realize rotor assembly location by addendum cone respectively and clamps with top from the compression at armature spindle two ends; Meanwhile, adjustment position when rotor holds out against the assembling of cylinder also for the motor of different model; Drive behind top arrival clamping and positioning position until tailstock, tailstock is locked by locking device; The butterfly spring of top afterbody ensure top all the time with armature spindle back-end central hole close contact to realize feeling relieved;
(5) slide servomotor effect, drives slide seat body to move axially along motor by axial slide slide carriage, and the centre bore that the stator module on slide seat body synchronously moves vertically and makes rotor assembly pass stator module carries out combination assembling;
At stator module and electric rotor assembly in conjunction with in assembling process, when the rear bearing of rotor assembly enters the moment of the rear axle bearing bore of stator module, certainly lead to interfering edge, now, because stator module is positioned on elastic positioning element, by the distortion of elastic positioning element under stressed, stator module will inevitably be made along the direction of interfering edge according to the journal offset of rotor assembly to realize disalignment compensation of error; Simultaneously, be contained in top meeting in adjusting center positioning sleeve along with the axis of rotor assembly along the direction rotor assembly of interfering edge swings on the inner conical surface of Morse taper shank front end, compensate disalignment error, rear bearing loaded smoothly and does not damage bearing, and avoiding rotor assembly magnetic-adsorption on stator module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410128132.2A CN103887931B (en) | 2014-04-01 | 2014-04-01 | Motor numerical control assembling device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410128132.2A CN103887931B (en) | 2014-04-01 | 2014-04-01 | Motor numerical control assembling device and method |
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| CN103887931A CN103887931A (en) | 2014-06-25 |
| CN103887931B true CN103887931B (en) | 2016-04-20 |
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| CN112865444B (en) * | 2021-01-08 | 2021-08-24 | 哈尔滨工业大学 | General assembly quality of motor |
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| KR20020084449A (en) * | 2001-05-02 | 2002-11-09 | 엘지이노텍 주식회사 | Apparatus for assembling motor |
| CN101373913B (en) * | 2007-08-20 | 2010-12-08 | 许晓华 | Fixture for assembling motor complete machine |
| CN202861731U (en) * | 2012-09-26 | 2013-04-10 | 六安江淮电机有限公司 | Numerical control device used for stringing rotors by motor |
| CN203788106U (en) * | 2014-04-01 | 2014-08-20 | 武汉轻工大学 | Motor assembling device |
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