CN204295378U - A kind of expander positioner for electric generator casing processing - Google Patents

Abstract

The utility model is a kind of expander positioner for electric generator casing processing, is the orientation tool that generator manufactures, solve large gauge electric generator casing add man-hour can not the problem of quick position, this device comprises: base, is device supporting seat; Auxiliary positioning plate is the annular component that this device centers fast on machining tool; Skewback sliding system is casing to be processed with stator core inner surface for benchmark reaches the component meeting its concentricity and perpendicularity with casing two end flanges when Vehicle Processing seam and plane; Hydraulic jack device has been that bracer treats the component processed casing self-centering and tighten up; Location limiter assembly is by upper locating piece, one group of position constraint parts that lower locating piece is formed with location cylindrical shell, and it forms the constraint to bracer jointly with the core assembly that rises.This device is hydraulic pressure bracer tyre expansion structure, and overcome that traditional positioner positioning precision is low, labour intensity is large, the defect of length consuming time, can reach the effect of quick position and Rapid reset.

Description

A kind of expander positioner for electric generator casing processing

Technical field

The utility model relates to the orientation tool in generator manufacture, refers in particular to a kind of expander positioner for electric generator casing processing.

Background technology

Hydraulic pressure bracer tyre expansion positioner is a kind of orientation tool that can be used for generate output and process at the generator unit stator two ends seam of more than 1000kw.

From medium and small generator evolution, generator unit stator process technology experienced by by monoblock type (casing integrated casting type+iron core disk laminate press-fit fixing) to rolled plate (casing iron plate enclose circle+iron core square piece laminate coated be welded fixing, or casing circle circle be welded+iron core disk laminates and press-fits plug welding and fix) development, because the former technology is because processing cost is high, the overall heaviness of unit, adaptability are not strong, generally be used to the manufacture of below 250kw small dimension generator, hinder generator size maximization development; The processing of the latter's stator is then novel technique widelyd popularize in recent ten years, it has that processing cost is low, unit is light and handy, applied widely, especially in the research and development of large gauge generator manufacture, advantage is more obvious, is just getting more and more as market accreditation and have the trend replacing the former.

But, in stator process, for casing docking the processing all more employing all the time of seam without expander location technology (for vertical lathe processing) and three-plate type expander location technology (for horizontal lathe processing), these technology are in the processing of unitary stator seam or small dimension rolled plate generator manufacture, because stator core distortion is little or repeatedly pressure thickness is little, maximum material size and design size close, thus can realize good positioning action, the product concentricity quality of processing also can meet complete machine docking requirement.And in the manufacture process of large gauge generator (casing generally all adopts rolled plate welding production), because iron core is folded greatly thick, load weight, and the welding deformation in casing manufacture very easily makes stator core follow and produces distortion, iron core inner circle maximum material size and design size are had depart from more greatly, take such location technology obviously cannot realize effective location, and then the concentricity of two docking seams and iron core cannot be ensured, become the resistance that constraint generator develops.

As everyone knows, in generator manufacture process, the mach quality of stator will determine whole generator electromechanical properties, and affect a lot of because have of stator electrical property, as qualitative factors such as iron core laminated degree of flicking, iron core endoporus cylindricity and casing degree of packing tightly, in addition, the docking seam processed of stator cage two end and the concentricity of plane and iron core endoporus, the factor of perpendicularity are particularly large on the impact of stator electrical property.Generally, during machined, concentricity and the perpendicularity of stator core endoporus and casing two end seam and plane be ensured, usually all using iron core endoporus as the benchmark of locating and machining; Be for unitary stator and small dimension rolled plate stator processing for casing, even if take disk to laminate due to iron core or take square piece to laminate because core length is limited, so iron core endoporus maximum material size and design size error little, adopt can meet concentricity and perpendicularity processing request without expander positioner or three-plate type expander positioner.

The existing location without expander positioner is mainly used in vertical lathe processing operation, as shown in Figure 1, it is with the fixing equipped location cylindrical shell 14 of rigging screw 17 on one piece of substrate 18, the outside dimension of this location cylindrical shell 14 is designed to less than the internal diameter size of stator core 15 0.20 ~ 0.30 millimeter, the stator to be processed be made up of stator core 15 and flanged casing 11 is then sleeved on outside the cylindrical shell 14 of location, and support below it by supporting bead 16, another by pressing plate 12, pressure rod 13, stator to be processed is then tightened up by manpower by the fixing compression system that assembling bolt 110 and pressurization bolt 19 are formed after artificial adjustment machining center to be positioned at without on expander positioner, stator to be processed and location cylindrical shell 14 coarse positioning error are fluctuated between 0-0.15 millimeter, eliminate this departing from, operating personnel are leaned on repeatedly to adjust to ensure, this process time and effort consuming, if very difficult manpower to be completed by this technology transplant the adjustment at locating and machining center to the processing of 1000kw large gauge generator.

Existing three-plate type expander die device as shown in Figure 2, be mainly used in small dimension generator unit stator on horizontal lathe, add the location of man-hour to product, its principle is: rise core 25 (total mutually isostructural three cores that rise, it fixes three location-plates 216 with screw 214) by steel bushing 26, first Compress Spring 27, screw 28 is connected with base 21, hand Screw nut 212 passes through clamping ring 22 under stud 213 acts on, be connected and fixed pin 23 and pressing plate 211, bearing 210 makes the first skewback 24 and the second skewback 29 along base 21 abutment sleeve moving in opposite directions and compressible second Compress Spring 215, and make the core 25 that rises with location-plate 216 under 2 skewback effects, do Vertical dimension movement outward, location-plate 216 is made to engage tensioner with the stator inner circle to be processed be made up of with flanged casing 217 stator core 218, reach location.After process finishing, manual derotation tightening nut 212, under the second Compress Spring 215 and the effect of the first Compress Spring 27, device restPoses.Analyze from this apparatus structure, the core coupling mechanism force that rises ensures by operative employee's manpower, consume very much the muscle power of individual, and also limit larger-scale unit due to horizontal installation, be therefore only limitted to be used in the short iron core of small dimension and be applicable in the electric generator casing seam processing of horizontal processing.

As can be seen here, above two kinds of positioners, because of the limitation of mentality of designing, cannot meet the demand that medium and small generator specification keeps the large-scale development.

Utility model content

The purpose of this utility model is to solve prior art Problems existing, provides a kind of and large gauge electric generator casing is added to the expander positioner for electric generator casing processing that can realize Fast Installation location man-hour.

The purpose of this utility model is achieved through the following technical solutions:

For an expander positioner for electric generator casing processing, it is characterized in that comprising:

Base, it is device supporting seat, it has the substrate of one piece of Intermediate Gray datum hole, 6 contour rest pads are uniform around the welding of datum hole external circumferential, rest pad top planes is welded one for installing the fixed disc of fairlead in hydraulic jack device, 6 contour rectangular supporting plates are arranged along the inside uniform welding of fixed disc opposite side outer rim, annular location-plate is arranged in the welding of rectangular supporting plates top planes centering, the seam and outer rim that coordinate with a lower locating piece are processed in annular location-plate upper surface, it has the through hole of several uniform bolt tightening, and base and lower locating piece are tightened up by this through hole with screw, along the uniform 6 contour support bars of support plate external circumferential on substrate,

Auxiliary positioning plate, it is the annular component that positioner centers fast on machining tool, be placed in the datum hole on described substrate, its upper end is upper cone body, and its outside diameter is less than the benchmark aperture of substrate, medial end portions is the middle part cylinder isometrical with the large end of upper cone body, and the cylindrical external diameter in bottom is less than lathe positioning process aperture;

Skewback sliding system, be casing to be processed (310) with stator core (319) inner surface be that benchmark reaches the component meeting its concentricity and perpendicularity with casing (310) two end flanges when Vehicle Processing seam and plane, by rising, core assembly and 4 supports form, the described core assembly that rises is one and is risen core by the lower large little frustum of a cone, the lower flange locating dowel of stretching out downwards bottom the core that rises and the upper flange locating dowel composition protruded upward from core top of rising; The engagement skewed slot of circumferentially symmetrical machining four inclination on the outer surface of the described core that rises; Described lower flange locating dowel and upper flange locating dowel are respectively by Flange joint bottom the core that rises and top, and the bottom of lower flange locating dowel contacts with hydraulic jack device; Described 4 bracers are placed in described four engagement skewed slots respectively, each bracer is a ramp blocks with smooth mesh inclined plane, and respectively engage with a described groove face engaging skewed slot, the face that bracer contacts with casing inner surface is the arc surface isometrical with stator core inner circle, the middle both sides of bracer vertical direction are provided with RECTANGULAR WINGS, the symmetrical and return spring assembly locating hole of uniform several horizontal direction in RECTANGULAR WINGS; The described core assembly that rises makes the bracer of described 4 engagements produce corresponding movement under hydraulic jack device effect when axis moves up;

Location limiter assembly, by upper locating piece, lower locating piece with location cylindrical shell form, wherein: described upper locating piece by 3 cylinders, a cylinder cone and 4 rectangles U-shaped form; One centre bore runs through the upper and lower end face of location; Top is the top cylindrical body laying plane bearing; Be upper cylinder below top cylindrical body, it is the interface expanding the range of work; Be lower cylinder below upper cylinder, it is the interface equipped with seam on the cylindrical shell of location; Cylinder cone is located at upper and lower cylindrical outer wall interlude, and itself and casing to be processed are installed; On four rectangles, UXing Jianbeihuan center circumference is distributed on lower cylinder and forms four U-shaped passages, cylinder cone is arranged the upper through hole of one group of band counterbore, and its hole system position should meet after upper locating piece coordinates with location cylindrical shell and can be formed and retrain bracer displacement location; Wherein: described lower locating piece by under 3 cylinders and four rectangles U-shaped form; Centre bore runs through locating piece upper and lower end face; Bottom cylinder is the interface equipped with the circular orientation plate seam on base; Mediate cylindrical is isometrical with location cylindrical shell; Upper cylinder is the interface equipped with seam under the cylindrical shell of location; Under four rectangles, UXing Jianbeihuan center circumference is distributed in upper cylinder and forms U-shaped passage under four, circumferential two groups of lower through-holes being used for fixing screwed hole and being with counterbore uniformly at intervals in mediate cylindrical, can be formed after the satisfied lower locating piece in described lower through-hole position coordinates with location cylindrical shell and retrain bracer displacement location; Wherein: described location cylindrical shell is cylindrical tube, evenly four rectangular openings of the same size are processed in the middle of on the face of cylinder, form the locating rectangle passage for bracer movement wherein, the symmetrical uniform several tapped through hole in each passage two side, return spring assembly is fixed in the tapped through hole of cylindrical shell by threaded pin, and its threaded pin end is inserted in locating hole corresponding to bracer RECTANGULAR WINGS; Respectively process one group of upper and lower screwed hole in cylindrical shell upper and lower end parts, its two groups of screwed hole positions meet location cylindrical shell after equipped with upper locating piece and lower locating piece, rectangular channel two side faces and described U-shaped passage and lower U-shaped passage two side faces position consistency.

The outside diameter 0.02-0.05mm less of the benchmark aperture of substrate of the upper cone body in described auxiliary positioning plate, the top end diameter of upper cone body (3201) is less than substrate (3101) benchmark aperture more than 4mm; The external diameter 0.00-0.03mm slighter in lower cylinder (3203) diameter in lathe positioning process aperture of auxiliary positioning plate bottom.

Described hydraulic jack device is placed on the middle position on the substrate of the turriform bracing frame inside of described base, it is by filler strip, jack, active push rod and adjustable fairlead composition, active push rod is promoted when being placed in the jack work on filler strip, make it promote to rise core assembly (37) up movement by fairlead centre bore, and by skewback sliding system effect conversion, complete bracer and treat the self-centering of processing casing and tighten up.

On described threaded pin, cover has TH series of compression spring.

Described expander positioner also comprises: bearing is placed in the corresponding aperture of locating piece upper end through upper flange locating dowel, briquetting is put on bearing, locking nut is by being fixed on upper locating piece by briquetting and bearing with upper flange locating dowel is threaded, reset Compress Spring is through upper flange locating dowel) be installed in below the interior upper locating piece of location cylindrical shell, under when initial compression and jacking, compression recovers the effect of making a concerted effort, the core assembly that promotes downwards to rise when completing release gets back to initial position.

The beneficial effects of the utility model:

The utility model improves the structure of existing medium and small generator large gauge series stator car seam locating and machining device for fastening, first, owing to have employed bracer as locating tensioning part and the core assembly that rises with its formation monocline block sliding system, the location cylindrical shell of casing stator core internal diameter to be processed and upper locating piece is being less than by external diameter, the two-dimensional positioning device that lower locating piece is formed grips and maintains down, the installation to large gauge casing to be processed can be completed fast, location, tensioner and pinning, decrease the task difficulty that location installed by large gauge workpiece, improve production efficiency, they are two years old, positioning and locking aspect due to this device uses hydraulic jack device to replace conventional nut pressing plate winding device, the expanding force produced by the derivation of operation hydraulic jack device institute is more than wanting large and reliable by manpower tensioner, and in horizontal for the realization of the casing of heaviness fine setting can also being looked for automatically under tensioner curable grip effect large like this, alleviate operator's labour intensity, they are three years old, in place in order to realize hydraulic pressure bracer formula expander car positioning device for seam Fast Installation, this device have employed auxiliary positioning plate, its one end and lathe table top fabrication hole match fixing, and installing hole designed on the other end and positioner base matches, make device installation in place become simple, not only obviously shorten the time of installation in place, also greatly reduce the operation intensity of operative employee.

In a word, device of the present utility model changes traditional vertical without expander location and horizontal three-plate type expander station-keeping mode, a kind ofly can realize Fast Installation location man-hour, ensure machining accuracy and reduce the device of labour intensity adding in the face of large gauge electric generator casing, after solving the maximization of medium and small generator specification, stator seam processing concentricity is difficult to the problem ensured, its positioning precision is high, simple to operation, laborsaving, save time, improve production efficiency

For further illustrating above-mentioned purpose of the present utility model, design feature and effect, below with reference to accompanying drawing, the utility model is described in detail.

Accompanying drawing explanation

Fig. 1 a is existing without expander car positioning device for seam location schematic diagram; Fig. 1 b is the top view (part) of Fig. 1 a;

Fig. 2 is existing three plate tyre expansion car positioning device for seam location schematic diagrames;

Fig. 3 is the expander positioning device structure schematic diagram for electric generator casing processing of the present utility model;

Fig. 4 is the understructure schematic diagram in Fig. 3;

Fig. 5 is the auxiliary positioning plate structure schematic diagram in Fig. 3;

Fig. 6 a is the core assembly structural representation that rises in Fig. 3; Fig. 6 b is the top view of Fig. 6 a;

Fig. 7 a is the bracer structural representation in Fig. 3; Fig. 7 b is the top view of Fig. 7 a;

Fig. 8 a is the positioning tube body structure schematic diagram in Fig. 3; Fig. 8 b is the top view of Fig. 8 a;

Fig. 9 a is the upper positioning block structure schematic diagram in Fig. 3; Fig. 9 b is Fig. 9 a upward view;

Figure 10 a is the lower positioning block structure schematic diagram in Fig. 3; Figure 10 b is Figure 10 a top view.

Detailed description of the invention

Accompanying drawing below in conjunction with embodiment is described in detail to detailed description of the invention of the present utility model.

The utility model is used for the expander positioner of electric generator casing processing see Fig. 3, its principle is under certain constraints, casing 310 to be processed is made to realize quick accurate location by the skewback slip system effect of one group of convertible moving direction, reach concentricity and the perpendicularity requirement of two ends seam and iron core endoporus, this positioner comprises:

Base 31, it is the supporting seat of positioner, it is a welding processing part, structure is see Fig. 4, on the substrate 3101 of one piece of Intermediate Gray datum hole (φ d7+ δ 7), 6 contour rest pads 3102 are uniform around the welding of datum hole external circumferential, rest pad 3102 top planes is welded one for installing the fixed disc 3103 of the height adjustable fairlead 333 changed a social system by bolt in hydraulic jack device, 6 contour rectangular supporting plates 3104 are arranged along the inside uniform welding of fixed disc 3103 opposite side outer rim, annular location-plate 3105 is arranged in the welding of rectangular supporting plates 3104 top planes centering, annular location-plate 3105 upper surface is processed to and lower locating piece 35 (seam a) coordinated see Figure 10 and outer rim, it has 12 uniform through holes for bolt tightening, and base 31 and lower locating piece 35 are tightened up by this through hole with screw 317, in addition, along the uniform 6 contour support bars 34 (shown in Fig. 3) of support plate 3102 external circumferential on substrate 3101, support bar 34 is used to support stator core 319 base plane in casing 310 to be processed, and its height should meet the requirement of minimum technique height when being greater than vertical Vehicle Processing.

Auxiliary positioning plate 32, realize the annular component that positioner centers fast on machining tool, structure is see Fig. 5, it is placed in the datum hole on substrate 3101, its upper end is upper cone body 3201, and its outside diameter is less than the benchmark aperture (little 0.02-0.05mm) of substrate 3101, medial end portions is hold isometrical middle part cylinder 3202 greatly with upper cone body 3201, and the external diameter of bottom cylinder 3203 is less than lathe positioning process aperture (little 0.00-0.03mm).During use, first auxiliary positioning plate 32 is fixed in lathe locating hole by its bottom cylinder 3203; And during positioner installation in position, then first found accurately the upper cone body 3201 on auxiliary positioning plate 32 by the datum hole on bottom substrate 3101, top end diameter on this upper cone body 3201 is less than substrate 3101 benchmark aperture more than 4mm, makes substrate 3101 datum hole realize very smoothly coordinating locating with the middle part cylinder 3202 of auxiliary positioning plate 32.Auxiliary positioning plate 32 not only makes the centralized positioning on machining tool of this device become convenient, substantially reduce the time of device alignment location, and significantly improve the precision of device centralized positioning compared with Gao Shike at hole system quality of fit, thus ensure that the consistent of machining center and the centre of location.

Skewback sliding system, by rising, core assembly 37 and 4 bracers 38 form, it realizes casing 310 to be processed with stator core 319 inner surface for benchmark reaches the key member meeting its concentricity and perpendicularity designing requirement with casing 310 liang of end flanges when Vehicle Processing seam and plane, the structure of the wherein said core assembly 37 that rises is see Fig. 6 a-Fig. 6 b, it is one and is risen core 372 by the lower large little frustum of a cone, the lower flange locating dowel 371 of stretching out downwards bottom the core 372 that rises and the upper flange locating dowel 373 protruded upward from core 372 top of rising form, at the outer surface 3722 (taper seat) of the core 372 that rises upper (shown in Fig. 6 b), the circumferentially engagement skewed slot 3721 of symmetrical machining four inclination, described lower flange locating dowel 371 and upper flange locating dowel 373 are respectively by Flange joint bottom the core 372 that rises and 2 lower external parts at top and upper external part, the bottom of lower flange locating dowel 371 contacts with hydraulic jack device 33, and the core assembly 37 that makes to rise moves up along axis under hydraulic jack device 33 acts on, wherein said 4 bracers 38 are placed in respectively and rise on the outer surface of core 372 four engagement skewed slots 3721, outside the core assembly 37 that rises, circumference is uniform, the structure of each bracer 38 is see Fig. 7 a-Fig. 7 b, it is a ramp blocks with smooth mesh inclined plane 381, the gradient of mesh inclined plane 381 is consistent with the gradient of the engagement skewed slot 3721 of the described core 372 that rises, and mesh inclined plane 381 engages with the described groove face engaging skewed slot 3721, the face that bracer 38 contacts with casing inner surface is the arc surface 382 isometrical with stator core 319 inner circle, thus can guarantee that under enough expanding force effects bracer 38 treats effective gripping and the location of processing casing 310, the middle both sides of bracer 38 vertical direction are provided with RECTANGULAR WINGS 383, symmetrical and the hole of uniform several horizontal direction in RECTANGULAR WINGS 383, this some holes is return spring assembly locating hole 3831, the described core assembly 37 that rises makes when moving up along axis under hydraulic jack device 33 acts on to produce corresponding movement at the bracer 38 of 4 uniform engagements of core assembly 37 circumference that rises.

Hydraulic jack device 33, be placed on the middle position on the substrate 3101 of turriform bracing frame 3102 inside of described base 31, it is by filler strip 331, jack 332, active push rod 334 and adjustable fairlead 333 form, active push rod 334 is promoted when the jack 332 be placed on filler strip 331 works, make it promote to rise the up movement of core assembly 37 by fairlead 333 centre bore, and by skewback sliding system effect conversion, complete bracer 38 and treat the self-centering of processing casing 310 and tighten up.

Location limiter assembly, is consisted of (see Fig. 3) the equipped condition set with location cylindrical shell 36 primarily of upper locating piece 311, lower locating piece 35, wherein:

Upper locating piece 311, structure refers to Fig. 9 a-9b, its configuration by 3 cylinders, a cylinder cone and 4 rectangles U-shaped form; Fig. 9 a sees from top to bottom, and centre bore 3117 runs through upper and lower end face; Top is processed to the top cylindrical body 3111 that can be laid plane bearing 312; Top cylindrical body 3111 is below upper cylinder 3112, its be one for expanding the process interface of the range of work; Upper cylinder 3112 is lower cylinder 3114 below, and it realizes the process interface equipped with seam 361 on the cylindrical shell 36 of location; Cylinder cone 3113 is located at the outer wall interlude of upper and lower cylinder 3112,3114, be convenient to casing 310 to be processed and install, and column diameter is consistent with location cylindrical shell 36; On four rectangles, U-shaped 3116 is distributed on lower cylinder 3114 (after screws tighten, welding is reinforced) formation four U-shaped passages 3118 by ring center circumference, cylinder cone 3113 is arranged the upper through hole 3115 of one group of band counterbore, and its hole system position should meet after upper locating piece 311 coordinates with location cylindrical shell 36 and can be formed and retrain bracer 38 displacement location.

Lower locating piece 35, structure refers to Figure 10 a-10b, its configuration by under 3 cylinders and four rectangles U-shaped form, Figure 10 a sees from lower to upper, and centre bore 3517 runs through upper and lower end face; Bottom cylinder 3511 realizes the process interface equipped with annular location-plate 3105 seam on base 31; Mediate cylindrical 3512 is isometrical with location cylindrical shell 36; Upper cylinder 3513 realizes the process interface equipped with location cylindrical shell 36 times seams 362; Under four rectangles U-shaped 3516 by ring center circumference be distributed on upper cylinder 3513 (after screws tighten, welding is reinforced) form four under U-shaped passage 3518, circumference two groups of lower through-holes 3515 being used for fixing screwed hole 3514 and band counterbore uniformly at intervals in mediate cylindrical 3512, wherein lower through-hole 3515 position also should meet lower locating piece 35 with locating to be formed after cylindrical shell 36 coordinates and retrains bracer 38 displacement location.

Location cylindrical shell 36, structure refers to Fig. 8 a-8b, it is cylindrical tube, evenly machined four rectangular openings of the same size in the middle of on the face of cylinder, formation can for the locating rectangle passage 366 of bracer 38 movement wherein, the symmetrical uniform several tapped through hole 363 in each passage 366 2 side, return spring assembly 39 is fixed in the tapped through hole 363 of cylindrical shell by the threaded pin of the transformation of the way, on threaded pin, cover has TH series of compression spring, and its threaded pin end is inserted in the locating hole of bracer 38 RECTANGULAR WINGS 383 correspondence; One group of upper and lower screwed hole 364,365 is respectively processed in cylindrical shell upper and lower end parts, its two groups of screwed hole positions should meet location cylindrical shell 36 with upper locating piece 311 and lower locating piece 35 equipped after, rectangular channel 366 two side faces and described U-shaped passage 3116 and lower U-shaped passage 3516 two side faces position consistency.

During making and installation, use the screw 316 shown in Fig. 3 to be fitted in by upper and lower locating piece seam respectively on the upper and lower screwed hole 364,365 of screwed hole corresponding to location cylindrical shell 36 biend by the upper through hole 3115 and lower through-hole 3515 being with counterbore to tighten up, retrain location by rectangular through-hole on it and the common structure mounted in pairs of U-shaped passage bracer 38 wherein, and also indirectly retrain core assembly 37 angular displacement of rising by core 372 inclined trough surface 3721 engagement that rises in bracer 38 inclined-plane 381 and the core assembly 37 that rises.

Also can be seen by Fig. 3: bearing 312 is placed in the corresponding aperture of upper locating piece 311 upper end 3111 through upper flange locating dowel 373, briquetting 313 is put on bearing 312, locking nut 314 is by being fixed on upper locating piece 311 by briquetting 313 and bearing 312 with upper flange locating dowel 373 is threaded, reset Compress Spring 315 is installed in below the interior upper locating piece 311 of location cylindrical shell 36 through upper flange locating dowel 373, under when initial compression and jacking, compression recovers the effect of making a concerted effort, the core assembly that promotes downwards to rise when completing release gets back to initial position.

By upper, lower locating piece 311, 35, the location limiter assembly that location cylindrical shell 36 is formed forms the constraint (see Fig. 3) to bracer 38 jointly with the core assembly 37 that rises, its position constraint mechanism formed: U-shaped side end face of locating piece and the top of location cylindrical shell up and down, bottom end face is respectively by upper, lower seam is equipped with, tighten up with screw 316, and design processing makes passage two side plane that on it, U-shaped is formed locate respectively in the same plane with rectangular channel two side plane on the cylindrical shell of location, form one and may produce the constraint navigation system swung to bracer 38, bracer about 38 retrains, and is taken on by location cylindrical shell 36 rectangular opening lower planes, thus ensure that bracer 38 moves horizontally outward when core assembly 37 acts on and can not produce obstruction being subject to rising, locate limiter assembly as can be seen here and why can effectively form position constraint mechanism, this is because up and down its upper center hole of locating piece retrains the core assembly that rises and can only do up movement at jack, four bracer 38 two side faces are subject to the two side faces of locating cylindrical shell 36 4 passages, the constraint of the U-shaped passage two side faces of upper and lower locating piece four and core 372 4 the skewed slot two side faces that rise, bracer 38 upper and lower end face is then subject to the constraint of locating cylindrical shell 36 upper and lower end face, make bracer 38 under the core assembly 37 that rises acts on, can only outwards move horizontally, and when resting, under the effect of return spring assembly 39 pretightning force, bracer 38 is still subject to by upper and lower locating piece and the constraint of locating cylindrical shell and keeps engaging with the core assembly inclined trough surface that rises, in addition, the structure of described location cylindrical shell 36 is see Fig. 8 a-Fig. 8 b, it is cylindrical body, both ends of the surface are processed into the upper seam 361 and lower seam 362 that coordinate with upper locating piece 311 and lower locating piece 35 respectively, the rectangular channel that the position of the screw system 364/365 that its end face configures should meet on it can with upper, on lower locating piece, U-shaped passage formation is located the constraint of bracer 38, uniform four rectangular openings 366 of cylindrical shell four side, location circumference, its size should meet bracer 38 and can realize making slide displacement (rectangular opening width-bracer thickness=δ 1 within it, rectangular opening height-bracer length=δ 2), the symmetrical uniform 5 groups of tapped through holes 363 in rectangular opening two side, return spring assembly 39 (being made up of threaded pin and TH Compress Spring) is equipped wherein, threaded pin its changed a social system by dog screw, on threaded pin, cover has TH series of compression spring, be threaded connection and make it be fixed in the corresponding screw of location cylindrical shell 36, its threaded pin end is inserted in locating hole corresponding to bracer 38 RECTANGULAR WINGS, make it produce by rotation threaded pin compression TH Compress Spring to be enough to overcome bracer 38 and location cylindrical shell 36, the pretightning force of force of sliding friction between upper and lower locating piece, and under this effect, bracer 38 is made to be subject to the effect of horizontal inward direction when not working, core assembly engages very well with rising, and skewback activity system can not be made to lose efficacy, to retrain its structure in location to bracer 38 and the core 37 that rises consistent forming for upper locating piece 311 and lower locating piece 35, namely all at uniform four the U-shaped passages of containment surfaces side circumference that it is arranged, form together with the cylindrical shell 36 of location and through hole is provided with to the constraint location of bracer 38 and center only can moves up and down to retrain the core assembly that rises, difference is, upper locating piece 311 only arranges one group with the through hole of the affixed band counterbore of location cylindrical shell 36, its upper end is designed to one section of one-tenth cylinder cone 3113 so that install casing to be processed, and upper surface is designed one can the structure of holding plane bearing, mainly after trade union college to be added tightens up, by rotational lock nut 314, positioning and fastening apparatus position is locked, ensure adding the processing failure and unsafe factor that can not occur because tightening up power inefficacy man-hour, reversely rotate the core assembly 37 that also can ensure to rise when locking nut 314 separates open locking constraint after process finishing in position to meet and engage with bracer 38, and be used for outside the through hole 3515 of the band counterbore affixed with location cylindrical shell 36 apart from one group on lower locating piece 35, opposite side also has a small cylinder 3511, its external diameter [summary] is less than annular location-plate 3105 seam internal diameter on base 31, and use screw 317 by one group of screwed hole 3514, annular location-plate 3105 seam on itself and base 31 to be equipped with.

Exactly because by upper and lower locating piece, location cylindrical shell and the core assembly that rises together form locates the operative constraint of bracer 38, make to make when the core assembly 37 that rises moves up along axis under hydraulic jack device 33 acts on uniform 4 engagements of core assembly 37 circumference of rising bracers 38 produces corresponding movement and evenly outwards can only move horizontally at the passage work limited, the face that bracer 38 contacts with casing inner surface is in addition made into the arc surface 382 with iron core inner surface diameter consistent size, thus can guarantee that under enough expanding force effects bracer 38 treats effective gripping and the location of processing casing 310, on rotational lock nut 314 to the upper flange locating dowel 373 because being formed when the core assembly 37 that rises rises, backstay neutral distance to rise core lifting position to pin in addition, so far the installation in position of workpiece 10 to be added is completed.

The restriction of bracer 38 lower planes is determined by rectangular channel on the cylindrical shell 36 of location, and bracer 38 length+δ 2 (δ 2 length direction gap) should be met, and the passage be made up of the U-shaped passage baseplane of upper and lower locating piece should be greater than " bracer 38 length+δ 2 ", to reduce the slip damping of bracer.

Be fixedly mounted on the return spring assembly 39 on the cylindrical shell 36 of location, Compress Spring is made to produce enough pre-pressing force by rotating threaded pin, and the bearing load of selected TH serial die spring and serviceability are much better than common Compress Spring, when bracer 38 tensioner, its thrust produced is after tensioner location pressure release, and bracer 38 can be made to quickly recover to original state; Its design condition is: return spring assembly 39 compresses the Σ F that makes a concerted effort should be greater than the force of sliding friction f produced between bracer 38 and location cylindrical shell 36.

For solving installation question, using iron core bore design dimension D-(1.5-2) mm as location cylindrical shell 36 diameter design size, just can overcome the installation difficulty brought because of machining deformation and accomplish pop into place, bracer 38 is at the transmitting forces tensioner casing 310 to be processed inner surface evenly outwards moving in the up process of core assembly 37 and not only rely on huge hydraulic coupling to produce that rises in addition, and casing 310 to be processed can be made to move horizontally to make its iron core endoporus center consistent with machine tooling center from action under this expanding force effect, reach and meet iron core endoporus and two ends process seam concentricity and perpendicularity required precision,

The utility model have employed hydraulic jack device 33 locates casing 310 to be processed force application component as tensioner, and guarantees reliably not lose efficacy in hydraulic pressure expander location by screwing locking nut 314, and this saves manpower;

The auxiliary positioning plate 32 of this device, is fixedly mounted on machine tooling technique center by it, make it become the centre of location of device installation in position, not only shorten the set-up time, and also reduce staff labor intensity, increase work efficiency;

This device adopts even bracer 38 circumferentially, bracer 38 is designed to the strip and block that Rigidity and strength is all better than platy structure, the core assembly 37 that rises is positioned in the middle of device, monocline block slip architecture is designed between its surrounding and bracer 38, make it when expander secured core folds thick large, stator that specification is large, it is more synchronous that bracer 38 circumferentially moves comparatively three-plate type, can bear larger expanding force and can not deformation failure.

In a word, according to the mach requirement of generator unit stator, the required precision of concentricity and perpendicularity between seam is processed for reaching casing 310 iron core endoporus to be processed and casing two flange port 318, this device have employed following structure: its structure one end of (1) auxiliary positioning plate 32 coordinates with lathe fabrication hole, the other end is designed to match with locating block on base 31 and tape guide introduces inclined-plane, be arranged on technique center, platen face and namely formed a band-guided convex centre of location, this is in place during heavy positioner is looked on lathe becomes easily fast, (2) base 31 is designed to the substrate 3101 of an end band locating hole, the annular location-plate 3105 that the seam that another end band can be equipped with lower locating piece 35 docks, and can meet the overall concentricity requirement of device, (3) upper locating piece 311, lower locating piece 35 respectively with location cylindrical shell 36 top, bottom is equipped with by seam, tighten up with screw 316, form one group of position constraint parts, the centre bore of upper locating piece 311 and lower locating piece 35 constrains the core assembly 37 that rises can only move up and down under external force by the upper flange locating dowel 373 of movement within it with lower flange locating dowel 371, then can retrain bracer 38 being subject to rising by location cylindrical shell 36 and the rectangular channel that jointly forms of upper and lower locating piece to move horizontally outward when core assembly 7 acts on and obstruction can not be produced, what rise by core assembly 37 skewed slot and bracer 38 inclined-plane engages the constraint being also subject to rectangular channel simultaneously, its retrains core assembly 37 angular displacement of rising, (4) bracer 38 and the core assembly 37 of rising are that the inclined-plane of α is by upper and lower locating piece 311 by engaging oblique angle, 35 and the lower formation one group of align member restriction that forms of location cylindrical shell 36 can change skewback sliding system component that is mobile and force direction, the core assembly 37 that wherein rises is core components in this positioner, it is by lower flange locating dowel 371, core 372 and the upper flange locating dowel 373 of rising is bolted and is integrally formed, lower flange locating dowel 371 can be subject to hydraulic jack device 33 upwards jacking effect through after lower locating piece 35 centre bore, upper flange locating dowel 373 is affixed through the nut 314 that is locked after locating piece 311 centre bores-bearing 312-briquetting 313 on compression reseting spring 315-, inclined trough surface (Fig. 6 a that the core 372 4 side circumference that rises is uniform, (Fig. 7 a) is engaged on upwards under thrust for 6b) corresponding with bracer 38 inclined-plane, make bracer 38 (Fig. 1) by location cylindrical shell 36, move and tensioner workpiece 310 to be added as horizontal cross under the constraints that upper locating piece 311 and lower locating piece 35 are formed, screw locking nut 314 and can ensure not lose efficacy in expander location, (5) in the RECTANGULAR WINGS of bracer 38 2 side, locating hole (Fig. 7 a of 5 groups has been evenly arranged by 2*5 rectangular arranged, 7b), and also screw is arranged by 2*5 rectangular arranged correspondence on four positions that location cylindrical shell 36 circumference is symmetrical, return spring assembly 39 is fixed on the cylindrical shell 36 of location by threaded pin, its head of screw through processing then inserts in bracer 38 corresponding aperture, screwing bolts makes TH serial die spring produce pretightning force, when rising by core assembly 37 under hydraulic jack device 33 upwards thrust, bracer 38 is produced move horizontally outward, then further Compress Spring, the reaction force making it produce is enough large, after process finishing, at locking nut 314, after hydraulic jack device 33 discharges power, bracer 38 and location cylindrical shell 36 can be overcome under this reaction force acts, sliding-frictional resistance between upper and lower locating piece quick mobile bracer 38 are to original state, take out workpiece, and the core assembly 37 that rises gets back to initial position under deadweight and the effect of reset Compress Spring 315 restoring force, complete processing operation.

Those of ordinary skill in the art will be appreciated that, above embodiment is only used to the purpose of this utility model is described, and be not used as restriction of the present utility model, as long as in essential scope of the present utility model, the change of the above embodiment, modification all will be dropped in the scope of claim of the present utility model.

Claims (5)

1., for an expander positioner for electric generator casing processing, it is characterized in that comprising:

Base (31), it is device supporting seat, it has the substrate (3101) of one piece of Intermediate Gray datum hole, 6 contour rest pads (3102) are uniform around the welding of datum hole external circumferential, rest pad (3102) top planes is welded one for installing the fixed disc (3103) of fairlead in hydraulic jack device (333), 6 contour rectangular supporting plates (3104) are arranged along the inside uniform welding of fixed disc (3103) opposite side outer rim, annular location-plate (3105) is arranged in the welding of rectangular supporting plates (3104) top planes centering, the seam and outer rim that coordinate with a lower locating piece (35) are processed in annular location-plate (3105) upper surface, it has the through hole of several uniform bolt tightening, and base (31) and lower locating piece (35) are tightened up by this through hole with screw (317), along the uniform 6 contour support bars (34) of support plate (3102) external circumferential on substrate (3101),

Auxiliary positioning plate (32), it is the annular component that positioner centers fast on machining tool, be placed in the datum hole on described substrate (3101), its upper end is upper cone body (3201), and its outside diameter is less than the benchmark aperture of substrate (3101), medial end portions is hold isometrical middle part cylinder (3202) greatly with upper cone body (3201), and the external diameter of bottom cylinder (3203) is less than lathe positioning process aperture;

Skewback sliding system, be casing to be processed (310) with stator core (319) inner surface be that benchmark reaches the component meeting its concentricity and perpendicularity with casing (310) two end flanges when Vehicle Processing seam and plane, be made up of the core assembly that rises (37) and 4 bracers (38), the described core assembly that rises (37) is one and is risen core (372) by the lower large little frustum of a cone, the lower flange locating dowel (371) of stretching out downwards from the core that rises (372) bottom and upper flange locating dowel (373) composition protruded upward from the core that rises (372) top, the engagement skewed slot (3721) of circumferentially symmetrical machining four inclination on the outer surface of the described core that rises (372), described lower flange locating dowel (371) and upper flange locating dowel (373) are respectively by Flange joint in the core that rises (372) bottom and top, and the bottom of lower flange locating dowel (371) contacts with hydraulic jack device (33), described 4 bracers (38) are placed in described four engagements skewed slot (3721) respectively, each bracer (38) is a ramp blocks with smooth mesh inclined plane (381), and respectively engage with a described groove face engaging skewed slot (3721), the face that bracer (38) contacts with casing inner surface is the arc surface (382) isometrical with stator core (319) inner circle, the middle both sides of bracer (38) vertical direction are provided with RECTANGULAR WINGS (383), RECTANGULAR WINGS (383) goes up symmetry and the return spring assembly locating hole (3831) of uniform several horizontal direction, the described core assembly that rises (37) makes the bracer (38) of described 4 engagements produce corresponding movement when moving up along axis under hydraulic jack device (33) effect,

Hydraulic jack device (33), be placed in described base (31), promotion is risen core assembly (37) up movement, and by skewback sliding system effect conversion, completes bracer (38) and treats processing casing (310) self-centering and tighten up;

Location limiter assembly, by upper locating piece (311), lower locating piece (35) with location cylindrical shell (36) form, wherein: described upper locating piece (311) by 3 cylinders, a cylinder cone and 4 rectangles U-shaped form; One centre bore (3117) runs through the upper and lower end face of locating piece (311); Top is for laying the top cylindrical body (3111) of plane bearing (312); Top cylindrical body (3111) is upper cylinder (3112) below, and it is the interface expanding the range of work; Upper cylinder (3112) is lower cylinder (3114) below, and it is the interface that upper seam (361) is equipped with location cylindrical shell (36); Cylinder cone (3113) is located at the outer wall interlude of upper and lower cylinder (3112,3114), and itself and casing to be processed (310) are installed; On four rectangles, U-shaped (3116) are distributed on upper formation four the U-shaped passages (3118) of lower cylinder (3114) by ring center circumference, at the upper through hole (3115) of the upper layout one group of band counterbore of cylinder cone (3113), its hole system position should meet upper locating piece (311) with locating to be formed after cylindrical shell (36) coordinates and retrain bracer (38) displacement location; Wherein: described lower locating piece (35) by under 3 cylinders and four rectangles U-shaped form; Centre bore (3517) runs through locating piece (311) upper and lower end face; Bottom cylinder (3511) is the interface equipped with circular orientation plate (3105) seam on base (31); Mediate cylindrical (3512) is isometrical with location cylindrical shell (36); Upper cylinder (3513) is the interface equipped with seam (362) under location cylindrical shell (36); Under four rectangles, U-shaped (3516) are distributed on U-shaped passage (3518) under the upper formation four of upper cylinder (3513) by ring center circumference, at the upper circumferential two groups of lower through-holes (3515) being used for fixing screwed hole (3514) and being with counterbore uniformly at intervals of mediate cylindrical (3512), under described lower through-hole (3515) position meets, locating piece (35) can be formed after coordinating with location cylindrical shell (36) and retrain bracer (38) displacement location; Wherein: described location cylindrical shell (36) is cylindrical tube, evenly four rectangular openings of the same size are processed in the middle of on the face of cylinder, form the locating rectangle passage (366) for bracer (38) movement wherein, the symmetrical uniform several tapped through hole (363) in each passage two side, return spring assembly (39) is fixed in the tapped through hole (363) of cylindrical shell by threaded pin, and its threaded pin end is inserted in locating hole corresponding to bracer (38) RECTANGULAR WINGS (383); One group of upper and lower screwed hole (364,365) is respectively processed in cylindrical shell upper and lower end parts, its two groups of screwed hole positions meet location cylindrical shell (36) after being equipped with upper locating piece (311) and lower locating piece (35), rectangular channel (366) two side faces and described U-shaped passage 3116 and lower U-shaped passage 3516 two side faces position consistency.

2., as claimed in claim 1 for the expander positioner of electric generator casing processing, it is characterized in that:

The outside diameter 0.02-0.05mm less of the benchmark aperture of substrate (3101) of the upper cone body (3201) in described auxiliary positioning plate (32), the top end diameter of upper cone body (3201) is less than substrate (3101) benchmark aperture more than 4mm; The external diameter 0.00-0.03mm slighter in lower cylinder (3203) diameter in lathe positioning process aperture of auxiliary positioning plate (32) bottom.

3., as claimed in claim 1 for the expander positioner of electric generator casing processing, it is characterized in that:

Described hydraulic jack device (33) is placed on the middle position on the inner substrate (3101) of the turriform bracing frame (3102) of described base (31), it is by filler strip (331), jack (332), active push rod (334) and adjustable fairlead (333) composition, active push rod (334) is promoted when being placed in jack (332) work on filler strip (331), it is made to promote to rise core assembly (37) up movement by fairlead (333) centre bore, and by skewback sliding system effect conversion, complete bracer (38) treat processing casing (310) self-centering tighten up.

4., as claimed in claim 1 for the expander positioner of electric generator casing processing, it is characterized in that:

On described threaded pin, cover has TH series of compression spring.

5., as claimed in claim 1 for the expander positioner of electric generator casing processing, it is characterized in that:

Described expander positioner also comprises: bearing (312) is placed in upper locating piece (311) upper end (3111) corresponding aperture through upper flange locating dowel (373), briquetting (313) is put on bearing (312), locking nut (314) is by being fixed on upper locating piece (311) by briquetting (313) and bearing (312) with upper flange locating dowel (373) is threaded, reset Compress Spring (315) is installed in upper locating piece (311) below in location cylindrical shell (36) through upper flange locating dowel (373), under when initial compression and jacking, compression recovers the effect of making a concerted effort, the core assembly that promotes downwards to rise when completing release gets back to initial position.