CN105598531B

CN105598531B - A kind of align reaming instrument of large rotor flange attachment pegs hole machined

Info

Publication number: CN105598531B
Application number: CN201610143163.4A
Authority: CN
Inventors: 鲍勇; 李震洪; 权正钟
Original assignee: SHANGHAI HAIYE MECHANICAL AND ELECTRICAL EQUIPMENT Co Ltd
Current assignee: SHANGHAI HAIYE MECHANICAL AND ELECTRICAL EQUIPMENT Co Ltd
Priority date: 2016-03-14
Filing date: 2016-03-14
Publication date: 2017-10-13
Anticipated expiration: 2036-03-14
Also published as: CN105598531A

Abstract

The present invention provides a kind of align reaming instrument of large rotor flange attachment pegs hole machined, including clamp body, blade row and the reamer being fixed on blade row, the clamp body includes the fixture branch arm that chuck body portion and two are oppositely arranged, a cavity volume is formed between the chuck body portion and two fixture branch arms, the reamer is located in the cavity volume；The medial surface of the fixture branch arm is the locating surface parallel to end face of flange, and the blade row is rotationally located in two fixture branch arms and blade row can be along itself axial movement, and the axial direction of the blade row and the locating surface of fixture branch arm are perpendicular.Positioning datum when the application is processed using end face of flange as pin-and-hole, it greatly improves the machining accuracy of pin-and-hole, it ensure that the axiality of pin-and-hole and the depth of parallelism of pin-and-hole and rotor axial on two rotor flanges, the final jerk value for causing turbine rotor shafting is within the limits prescribed, it is ensured that the normal operation of steam turbine.

Description

A kind of align reaming instrument of large rotor flange attachment pegs hole machined

Technical field

The present invention relates to a kind of steam turbine plant additional processing equipment, more particularly to a kind of large rotor flange attachment pegs The align reaming instrument of hole machined.

Background technology

At present, the rotor of large-size steam turbine has weighed hundred tons, and turbine rotor is in (near-sonic speed), high pressure (240 air at a high speed Pressure), operate for a long time in the environment of high temperature (more than 550 DEG C).The many roots rotor moments of torsion of steam turbine transmit attachment structures：Adjacent two The end of roots rotor be equipped with flange, flange offer it is multiple along the equally distributed pin-and-hole in circumference of flange direction, two roots rotors Flange is fixedly connected by multiple bolts, and the bolt is located in the pin-and-hole of two roots rotor end flanges, so as to realize moment of torsion Transmission and output and the output of great power.Such as, the output torque of 1,000,000 KW steam-turbine units is up to 300 tons of rice More than, and require that mutual bounce of the whole rotor axial system in tens meters of length is extremely small, 0.05mm is typically no more than, Therefore, its requirement on machining accuracy to pin-and-hole on rotor tip flange is very high.In addition, to some other big machineries, than Such as generator, large pump use the rotor of larger model, and its machining accuracy to pin-and-hole on rotor tip flange also has There is very high requirement.

Two rotors newly dispatched from the factory are being connected and (are changing two roots rotors in steam turbine simultaneously) or one is newly dispatching from the factory Rotor with being connected (roots rotor i.e. in a replacing steam turbine) with old rotor in a steam turbine when, be required for two Pin-and-hole on the flange of rotor to be connected carries out fraising processing, but the processing of fraising at present has more difficulty：

1st, the space of two roots rotor end flange junctions is very small, and any reaming lathe or reaming apparatus can not all pacify Dress, traditional is all to rely on artificial free-hand fraising, therefore can not be positioned, so as to cause the machining accuracy (bag of pin-and-hole on rotor flange Include dimensional accuracy, depth of parallelism etc.), the finish of pin-and-hole hole wall all do not reach requirement.

2nd, it can not find suitable position in two rotor tip flange connections and remove location and installation instrument, be especially desirable to pin Hole be removed amount it is less and can not be too many because also needing to place under repair to rotor after rotor comes into operation a period of time, i.e., There is still a need for carrying out align reaming processing to the pin-and-hole on rotor tip flange, therefore need to leave enough allowance；Therefore, at present Itself positioning correcting can only be carried out with base hole on rotor tip flange in fraising, so as to cause pin-and-hole easily to cut with scissors partially, and then led Cause the jerk value of whole rotor axial system big, be unsatisfactory for requiring.

When the 3rd, carrying out positioning correcting using base hole on rotor tip flange itself, in the repairing of old steam-turbine unit ----two In the case that roots rotor only changes a roots rotor, the site error of pin-and-hole, size etc. are not known without exception on old rotor, along with old turn The lane hair deformation of pin-and-hole on son, therefore the allowance in base hole can only be increased on new rotor, and it is at all unprocessed substantially fixed Plane.

4th, it is pressed for time, especially the steam-turbine unit repair cycle is very tight, because steam-turbine unit is done sth. in advance to generate electricity for one day, its Nearly ten million yuan of wealth can be just created, and traditional pin-and-hole align reaming efficiency is very low, time-consuming, it is impossible to meets and requires.

The content of the invention

The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of high big of pin-and-hole machining accuracy The align reaming instrument of type rotor flange attachment pegs hole machined.

To achieve the above object, the present invention provides a kind of align reaming instrument of large rotor flange attachment pegs hole machined, uses In the pin-and-hole being oppositely arranged on the flange for processing two rotors to be connected, the end face of flange of the rotor mutually hangs down with rotor axial Directly, the align reaming instrument includes clamp body, blade row and the reamer that is fixed on blade row, the clamp body include chuck body portion, And two fixture branch arms being oppositely arranged, form a cavity volume, institute between the chuck body portion and two fixture branch arms Reamer is stated in the cavity volume；The medial surface of the fixture branch arm is the locating surface parallel to end face of flange, two fixture branch Be installed with positioning sliding bearing in arm, two positioning sliding bearings be coaxially set and position sliding bearing axial direction it is vertical Directly in locating surface, the blade row is rotatable and is axially displaceably supported in positioning sliding bearing；When clamp body is enclosed on into two After on the flange of roots rotor, the cavity volume accommodating portion flange and can be connected with pin-and-hole to be processed on flange.

Further, the material of the positioning sliding bearing is copper.

Preferably, after clamp body is enclosed on the flange of two roots rotors, locating surface on the inside of a fixture branch arm with The end face of flange of one roots rotor mutually reclines, and is threaded with a puller bolt in another fixture branch arm, the puller bolt edge The axial direction of blade row is located in fixture branch arm and the end of puller bolt and the end face of flange of another roots rotor lean.

Further, in addition to drive mechanism, the drive mechanism include along the axially extending feeding feed screw mandrel of blade row, With feeding feed wire rod thread be connected nut sleeve, can Double-directional rotary turning set and trundle, one end of the blade row is opened Provided with axially extending slotted eye, the feeding feed screw mandrel is located in the slotted eye, the nut sleeve be located in slotted eye end, And mutually fixed with blade row；The turning set is enclosed on blade row, is offered on the outer peripheral face of the blade row and multiple are spaced apart and open Mouthful towards turning set inner peripheral surface teeth groove, the inner of the trundle can be stretched into teeth groove, and the outer end of trundle is located in rotation A compression spring is provided with set and at the outer end of trundle；The inner of the trundle is provided with an inclined plane, the inclined plane part In teeth groove.

Preferably, the drive mechanism also include one along turning set the handle radially extended, in the turning set radially Offer a through hole, the inner of the handle is stretched into the through hole of turning set and is fixedly connected with turning set, the trundle and Compression spring is positioned radially in the through hole of turning set along turning set, and the outer end of compression spring and the inner of handle offset Lean on.

Further, the reamer is in sleeve-shaped, and reamer is enclosed on blade row and is connected with blade row key.

Preferably, the outer peripheral face of the reamer is provided with six road spiral cutting swords, and six road spiral cutting swords are along reamer It is circumferential to be spaced apart in 63 °, 58.5 °, 58.5 °, 63 °, 58.5 °, 58.5 ° of angle.

Further, the tool cutting edge angle α of the spiral cutting sword is 13 ° -17 °, the helixangleβ of spiral cutting sword for 18 ° - 22°。

Further, the side drift angle γ of the spiral cutting sword is 13 ° -17 °.

Preferably, chip-removal hole is offered in the chuck body portion, the cavity volume on the inside of chuck body portion is with being located at folder Perimeter on the outside of tool body is connected by chip-removal hole.

As described above, the align reaming instrument of large rotor flange attachment pegs hole machined of the present invention, has with following Beneficial effect：

In the application, when cutting two pin-and-holes relative on the flange of two rotors using reamer, due to the axle of blade row To the locating surface perpendicular to fixture branch arm, and locating surface is parallel to the end face of flange of rotor, therefore reamer is with the movement of blade row The direction of feed of direction, namely reamer perpendicular to rotor end face of flange so that the pin-and-hole processed is perpendicular to rotor End face of flange and parallel to the axial direction of rotor, therefore, positioning base when being processed in the application using end face of flange as pin-and-hole Standard, it greatly improves the machining accuracy of pin-and-hole, ensure that the axiality and pin-and-hole of pin-and-hole are with turning on two rotor flanges The depth of parallelism of sub- axial direction, the final jerk value for causing turbine rotor shafting is within the limits prescribed, it is ensured that steam turbine is just Often operating.

Brief description of the drawings

Fig. 1 is the structural representation of pin-and-hole on the vertical processing rotor flange of align reaming instrument in the application.

Fig. 2 for Fig. 1 A-A to sectional view..

Fig. 3 is the structural representation of pin-and-hole on the horizontal processing rotor flange of align reaming instrument in the application.

Fig. 4 is the structural representation of reamer in the application.

Fig. 5 is the end view drawing of reamer in the application.

Component label instructions

1 rotor

101 flanges

102 pin-and-holes

103 end face of flange

2 clamp bodies

201 chuck body portions

202 fixture branch arms

203 cavity volumes

204 locating surfaces

205 chip-removal holes

3 blade rows

301 slotted eyes

302 teeth groove

4 reamers

401 spiral cutting swords

402 chip areas

403 right angle edge

404 rounding arc edge

5 positioning sliding bearings

501 support holes

601 puller bolts

602 feeding feed screw mandrels

603 nut sleeves

604 turning sets

605 trundles

606 compression springs

607 handles

608 location nuts

609 inclined planes

8 leveling bolts

9 cushion blocks

Embodiment

Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation Content disclosed by book understands other advantages and effect of the present invention easily.

It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only to coordinate specification to be taken off The content shown, so that those skilled in the art is understood with reading, is not limited to enforceable qualifications of the invention, therefore Do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influenceing the present invention Under the effect that can be generated and the purpose that can reach, it all should still fall and obtain the model that can cover in disclosed technology contents In enclosing.Meanwhile, the term of cited such as " on ", " under " in this specification, "left", "right", " centre " and " one " is also only It is easy to understanding for narration, and is not used to limit enforceable scope of the invention, its relativeness is altered or modified, without essence Change under technology contents, when being also considered as enforceable category of the invention.

The application provides a kind of align reaming instrument of large rotor flange attachment pegs hole machined, to be connected for processing two The pin-and-hole 102 being oppositely arranged on the flange 101 of rotor 1, a certain amount of metal level on the hole wall of pin-and-hole 102 is cut off by reamer 4, from And make the axiality and pin-and-hole 102 of multigroup two pin-and-holes 102 being oppositely arranged on the flange 101 of two rotors 1 to be connected All met the requirements with the depth of parallelism of the axial direction of rotor 1, and then improve moment of torsion between the connected reliability of two roots rotors 1 and rotor 1 and passed The reliability passed.In addition, the end of two roots rotors 1 to be connected all has a flange 101, and rotor 1 to be connected have it is following Feature：When rotor 1 is the new rotor dispatched from the factory after rotor machining factory is finished using smooth turning lathe, the end face of flange of new rotor 103 dimensional accuracy is very high, and end face of flange 103 is axially perpendicular with rotor 1, is opened up in advance on the flange 101 of rotor 1 There is base hole；When rotor 1 is to have run the old rotor after a period of time in steam turbine, the pin-and-hole on the flange 101 of rotor 1 is opened in 102 produce certain deformation, the size of pin-and-hole 102 not within the limits prescribed, with very big error；But the flange of rotor 1 101 is impaired very small, therefore the end face of flange 103 of rotor 1 remains perpendicular to the axial direction of rotor 1.

Further, as shown in Fig. 1 or Fig. 3, the align reaming instrument that the application is related to includes clamp body 2, blade row 3 and is fixed on Reamer 4 on blade row 3, the clamp body 2 includes the fixture branch arm 202 that chuck body portion 201 and two are oppositely arranged, Two fixture branch arms 202 be respectively provided at it is at the two ends in chuck body portion 201 and perpendicular with chuck body portion 201, therefore, A cavity volume 203 is formed between the chuck body portion 201 and two fixture branch arms 202, the reamer 4 is located at the cavity volume 203 In.The medial surface of the fixture branch arm 202 is the locating surface 204 parallel to end face of flange 103, and the locating surface 204 passes through height After the finishing of precision lathe, its dimensional accuracy is very high, therefore the flatness and smoothness of locating surface 204 can be protected effectively Card.Offered in two fixture branch arms 202 and screw is provided with through hole, the through hole is fixed on fixture branch arm Positioning sliding bearing 5 on 202, two positioning sliding bearings 5 are coaxially set and position being axially perpendicular to for sliding bearing 5 The support holes 501 perpendicular to locating surface 204 are offered in locating surface 204, the positioning sliding bearing 5, therefore two positioning are slided The support holes 501 of bearing 5 are coaxially set, the blade row 3 it is rotatable and be axially movable be supported on two positioning sliding axles Hold in 5 support holes 501, so as to position blade row 3 by the principle of 2 points of fixed straight lines, make between blade row 3 and locating surface 204 Perpendicularity, that is, ensure that the perpendicularity between pin-and-hole 102 and end face of flange 103 after processing.Turn when clamp body 2 is enclosed on into two Son 1 flange 101 on after, the cavity volume 203 can accommodating portion flange 101 and with the phase of pin-and-hole 102 to be processed on flange 101 Connection.Preferably, positioning sliding bearing 5 material is copper, the wearability of positioning sliding bearing 5 is improved, to improve align reaming work The service life of tool.

On flange 101 using two rotors 1 of above-mentioned align reaming instrument machining during two relative pin-and-holes 102, align reaming The working condition of instrument has two kinds：1st, it is vertical, as shown in figure 1, now, flange 101 of the longitudinal sleeve of clamp body 2 in two roots rotors 1 On, the chuck body portion 201 is vertically extending, and the horizontal cross of fixture branch arm 202 extends and is respectively provided at chuck body The upper end side and lower end side in portion 201；2nd, it is horizontal, as shown in figure 3, now, clamp body 2 is laterally enclosed on the flange 101 of two roots rotors 1 On, the transverse horizontal of chuck body portion 201 extension, the fixture branch arm 202 is vertically extending and is respectively provided at chuck body The left end side in portion 201 and right-hand member side.But, above-mentioned align reaming instrument is regardless of with the pin-and-hole on which kind of state machining flange 101 102, the axial direction of blade row 3 is all the time perpendicular to the locating surface 204 of fixture branch arm 202, and locating surface 204 is parallel to rotor 1 End face of flange 103, therefore the end face of flange 103 for being axially perpendicular to rotor 1 of blade row 3 and parallel to the axial direction of rotor 1, therefore, hinge Knife 4 with the moving direction of blade row 3, namely reamer 4 direction of feed all the time perpendicular to the end face of flange 103 of rotor 1 so that The pin-and-hole 102 that must be processed perpendicular to rotor 1 end face of flange 103 and parallel to the axial direction of rotor 1.So, in the application with The positioning datum when end face of flange 103 (end face of flange 103 for being preferred to use new rotor 1) of rotor 1 is processed as pin-and-hole 102, It greatly improves the machining accuracy of pin-and-hole 102, multigroup two pins being oppositely arranged on two flanges 101 of rotor 1 are ensure that The axiality and pin-and-hole 102 in hole 102 and the depth of parallelism of the axial direction of rotor 1, it is final so that the jerk value of the shafting of turbine rotor 1 Within the limits prescribed, it is ensured that the normal operation of steam turbine.

Preferably, as shown in figure 1, chip-removal hole 205 is offered in the chuck body portion 201, positioned at chuck body portion 201 The cavity volume 203 of inner side is connected with positioned at the perimeter in the outside of chuck body portion 201 by chip-removal hole 205, so that will excision Under metal fillings discharge.

Further, as shown in Fig. 1 or Fig. 3, after clamp body 2 is enclosed on the flange 101 of two roots rotors 1, a folder The end face of flange 103 of the locating surface 204 and a roots rotor 1 of the inner side of tool branch arm 202 mutually reclines, another fixture branch arm 202 In be threaded with a puller bolt 601, the axial direction of the puller bolt 601 along blade row 3 be located in fixture branch arm 202 and The end of puller bolt 601 and the end face of flange 103 of another roots rotor 1 lean, so that the position of clamp body 2 be fixed. Meanwhile, two leveling bolts 8 are threaded with the chuck body portion 201, radial direction of the leveling bolt 8 along blade row 3 is located in In chuck body portion 201 and outer peripheral face of the end respectively with two roots rotors 1 of two leveling bolts 8 leans, so that adjustable During vertical processing the perpendicularity in chuck body portion 201 and during horizontal processing chuck body portion 201 levelness.

Further, in addition to drive mechanism, for driving, blade row 3 is rotated and blade row 3 is moved axially along itself, that is, is realized Blade row 3 drives reamer 4 to drive the feed of reamer 4 again while rotation；Further, since the space at the processing of pin-and-hole 102 is extremely It is small, therefore the application provides a kind of structure preferably drive mechanism.Specifically, as depicted in figs. 1 and 2, the drive mechanism includes Along the axially extending feeding feed screw mandrel 602 of blade row 3, with feeding feed screw mandrel 602 be threadedly coupled nut sleeve 603, can be two-way The turning set 604 and trundle 605 of rotation, one end of the blade row 3 offer axially extending slotted eye 301, the feeding Feed screw mandrel 602 is located in the slotted eye 301 and is coaxially disposed with blade row 3, and the nut sleeve 603 is located in the end of slotted eye 301 Portion is simultaneously mutually fixed by screw with blade row 3；The turning set 604 is enclosed on blade row 3, is offered on the outer peripheral face of the blade row 3 Multiple teeth groove 302 for being spaced apart and being open towards the inner peripheral surface of turning set 604, the radially extending along blade row 3 of teeth groove 302, The inner of the trundle 605 can be stretched into teeth groove 302, and the outer end of trundle 605 is located in turning set 604 and trundle A compression spring 606 is provided with 605 outer end；The inner of the trundle 605 is provided with an inclined plane 609, the inclined plane 609 Inboard portion is located in teeth groove 302, and the Outboard Sections of inclined plane 609 are located at outside teeth groove 302, and the turning along blade row 3 of inclined plane 609 Dynamic direction is reversely outward-dipping.Specifically, if blade row 3 is to rotate clockwise, inclined plane 609 leans outward in the counterclockwise direction Tiltedly；If blade row 3 is to rotate counterclockwise, inclined plane 609 is outward-dipping along clockwise direction.

During machining pin-and-hole 102, clamp feeding feed screw mandrel 602 using instrument (such as clamp), make feeding feed silk Bar 602 is not rotated, and rotates forward the turning set 604, then turning set 604 drives trundle 605 to rotate, outside trundle 605 The cell wall of side face and teeth groove 302 leans and then drives blade row 3 synchronously to rotate, and blade row 3 drives nut sleeve 603 synchronously to turn It is dynamic, and nut sleeve 603 is that screw thread coordinates and feeding feed screw mandrel 602 is not rotated with feeding feed screw mandrel 602, therefore nut sleeve 603 Blade row 3 is driven to be moved axially along feeding feed screw mandrel 602.Simultaneously as the space at the processing of pin-and-hole 102 is very small, therefore not side Just the turning set 604 is rotated always in one direction using 360 ° of ground of instrument；Therefore, when by turning set 604 in one direction Rotate forward after an angle, then turning set 604 is rotated backward, then turning set 604 drives trundle 605 to rotate backward, this When, inclined plane 609 and the teeth groove side of blade row 3 on trundle 605 are linear contact lay, and contact force between the two can not drive blade row 3 are rotated, therefore trundle 605 can successfully be skidded off from the teeth groove 302 of blade row 3, and trundle 605 is in the work of compression spring 606 Stretched into again after circumferentially being moved with the lower outer peripheral face along blade row 3 in next teeth groove 302, be to be rotated forward using instrument again now The turning set 604 provides rotation space.That is, by rotating forward described 604 1 angles of turning set, reversely turning Described 604 1 angles of turning set are moved, described 604 1 angles of turning set is rotated forward, rotates backward the turning set 604 ... Such mode causes blade row 3 (direction rotates forward direction for turning set 604) continuous rotation, Jin Ershi in one direction Existing blade row 3 drive reamer 4 along same direction uniform rotation while, blade row 3 drive reamer 4 can also be equal in the same direction Even axial movement, completes the processing to pin-and-hole 102.In the present embodiment, reamer 4 rotates one and enclosed, and its axial feed amount is 0.5mm.

Preferably, feed screw mandrel 602 is fed for the ease of being clamped using clamp, it is described as shown in Fig. 1 or Fig. 3 The lower end of feeding feed screw mandrel 602 is fixed with a location nut 608 for being located at the outside of slotted eye 301 on blade row 3.Meanwhile, it is described enter End to feed screw mandrel 602 is additionally provided with a cushion block 9 being placed on rotor 1, by selecting different size of cushion block 9 to make this Apply for that the align reaming instrument being related to is applied to the processing of pin-and-hole 102 on the flange 101 of rotor 1 of all size.Furthermore, pass through driving machine After the structure driving feed of reamer 4 is a certain amount of, if feeding feed 602 residue length in the slotted eye 301 of blade row 3 of screw mandrel can not make reamer 4 whole feeds are complete, now, can fix handle 607, rotate feeding feed screw mandrel 602, feeding feed screw mandrel 602 is screwed in into knife , afterwards can normal operating in the slotted eye 301 of row 3.

Further, for the ease of rotating the turning set 604, as depicted in figs. 1 and 2, the drive mechanism also includes One along turning set 604 the handle 607 radially extended, radially offer a through hole, the handle 607 in the turning set 604 The inner stretch into the through hole of turning set 604 and be fixedly connected with turning set 604, the trundle 605 and compression spring 606 Along being positioned radially in the through hole of turning set 604 for turning set 604, and outer end and the inner phase of handle 607 of compression spring 606 Against.Therefore, when constantly rotating forward handle 607, rotate backward handle 607, rotate forward handle 607, rotate backward hand Handle 607 ... can make blade row 3 drive reamer 4 along same direction rotates while, blade row 3 drive reamer 4 can also be in same side Axially upwardly move, complete the processing to pin-and-hole 102.

Further, the reamer 4 is in sleeve-shaped, and reamer 4 is enclosed on blade row 3 and is connected with the key of blade row 3；Therefore, it is described It is thicker that blade row 3 can be done, and then reduces the elastic deformation of the blade row 3 in the process of pin-and-hole 102, to improve pin-and-hole 102 Machining accuracy, and reamer 4 external diameter can also do it is larger so that the external diameter of reamer 4, can close to aperture with pin-and-hole 102 Whole hole wall is cut with scissors, the linearity issues of pin-and-hole 102 are efficiently solved.In addition, the outer surface of the blade row 3 can be carried out at nitridation Reason, to improve the case hardness of blade row 3, the progressive elastic deformation for reducing blade row 3.

In addition, at the scene before the pin-and-hole 102 on the flange 101 of processing rotor 1, it can process and many external diameter be differed in size Reamer 4, such as external diameter are 58mm, 59mm, 60mm, 61mm, 62mm, 63mm, 64mm, 65mm, every structure reamer 4 all phases Together, therefore, at the scene pin-and-hole 102 on the flange 101 of processing rotor 1 when, one can be found out with the diameter of pin-and-hole 102 relatively Reamer 4, by it on the blade row 3, so as to reduce the resection of the hole wall of pin-and-hole 102, it is ensured that pin-and-hole 102 still have after processing compared with Many allowance, the processing again in favor of the next maintenance stage to pin-and-hole 102.During fraising, can choose it is many external diameter by small Multiple feed is carried out to pin-and-hole 102 to the reamer 4 being arranged in order greatly, the machining accuracy of pin-and-hole 102 is improved with this, moreover it is possible to solve Surplus eccentricity issues before the processing of pin-and-hole 102.

Further, as shown in Figure 4 and Figure 5, the outer peripheral face of the reamer 4 is provided with six road spiral cutting swords 401, and six Circumference of the road spiral cutting sword 401 along reamer 4 is spaced apart in 63 °, 58.5 °, 58.5 °, 63 °, 58.5 °, 58.5 ° of angle. For the mode that multiple tracks spiral cutting sword 401 is spacedly distributed in the prior art, the unequal interval distribution in the application With advantages below：A, process reamer 4 when be to use 1：40 dividing head control angle, the hand circle of dividing head, its turn The angle crossed is 9 °, therefore 63 ° and 58.5 ° of machining angle is respectively the dividing head of hand 7 circle dividing head and hand 6 circle half, therefore The rotation number of turns of dividing head can be accurately controlled, the machining accuracy of reamer 4 is improved.B, especially, six road spiral cutting swords 401 are not It is spacedly distributed, when being stopped after the hand handle 607 of every forward direction, drive one angle of rotation of reamer 4 of handle 607, angle The spiral cutting sword 401 of periphery is all parked at the diverse location of the hole wall of pin-and-hole 102, therefore, will not produce resonance, and reaming procedure is non- It is often stable.

Further, as shown in figure 5, forming chip area 402, chip area 402 between adjacent twice spiral cutting sword 401 Right angle edge 403 is provided with close to the side of one of spiral cutting sword 401, the end of a right-angle side of the right angle edge 403 extends To the cutting edge of spiral cutting sword 401, consequently facilitating processing；Chip area 402 is set close to the side of another road spiral cutting sword 401 There is rounding arc edge 404, one end of the rounding arc edge 404 extends to the end of another right-angle side of right angle edge 403, rounding The other end of arc edge 404 is extended at the cutting edge of spiral cutting sword 401 so that at the scene process when reamer 4 spiral Cutting edge 401 has 1-2mm grinding allowance, and then expands the scope of the outside dimension of reamer 4 selection, and live hinge is reduced with this The quantity of the reamer 4 prepared needed for before hole.In addition, as shown in figure 4, the tool cutting edge angle α of the spiral cutting sword 401 be 13 ° -17 °, Tool cutting edge angle α is preferably 15 °, and the cutting width of reamer 4 is reduced with this, so as to reduce chip power；The spiral of spiral cutting sword 401 Angle beta is 18 ° -22 °, and β is preferably 20 °.Furthermore, in the present embodiment, fallen again at the cutting edge of the formation tool cutting edge angle of spiral cutting sword 401 Angle, so as to form the side drift angle γ of spiral cutting sword 401, side drift angle γ is 13 ° -17 °, and side drift angle γ is preferably 15 °, so as to Reduce thickness of cutting, improve the finish of machined surface.

Above-described embodiment is that the pin-and-hole 102 on the flange 101 to two roots rotors 1 carries out fraising processing, it is, of course, also possible to Same fraising processing is carried out to the pin-and-hole on the flange and coupling flange of rotor.

In summary, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.

The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as Into all equivalent modifications or change, should by the present invention claim be covered.

Claims

1. a kind of align reaming instrument of large rotor flange attachment pegs hole machined, the method for processing two rotors (1) to be connected The pin-and-hole (102) being oppositely arranged on blue (101), the end face of flange (103) and rotor (1) of the rotor (1) is axially perpendicular, its It is characterised by：The align reaming instrument includes clamp body (2), blade row (3) and the reamer (4) being fixed on blade row (3), the fixture Body (2) includes the fixture branch arm (202) that chuck body portion (201) and two are oppositely arranged, the chuck body portion (201) cavity volume (203) is formed between two fixture branch arms (202), the reamer (4) is located in the cavity volume (203)；Institute The medial surface for stating fixture branch arm (202) is the locating surface (204) parallel to end face of flange (103), two fixture branch arms (202) positioning sliding bearing (5) is installed with, two positioning sliding bearings (5) are coaxially set and position sliding bearing (5) be axially perpendicular to locating surface (204), the blade row (3) is rotatable and is axially displaceably supported on positioning sliding bearing (5) in；After clamp body (2) is enclosed on the flange of two roots rotors (1) (101), the cavity volume (203) can accommodating portion flange (101) and with pin-and-hole (102) to be processed on flange (101) it is connected.

2. align reaming instrument according to claim 1, it is characterised in that：The material of the positioning sliding bearing (5) is copper.

3. align reaming instrument according to claim 1, it is characterised in that：When the method that clamp body (2) is enclosed on to two roots rotors (1) After on blue (101), the end face of flange (103) of locating surface (204) and a roots rotor (1) on the inside of a fixture branch arm (202) Mutually recline, a puller bolt (601) is threaded with another fixture branch arm (202), the puller bolt (601) is along blade row (3) axial direction be located in fixture branch arm (202) and puller bolt (601) end and the flange end of another roots rotor (1) Face (103) leans.

4. align reaming instrument according to claim 1, it is characterised in that：Also include drive mechanism, the drive mechanism includes The nut sleeve being threadedly coupled along the axially extending feeding feed screw mandrel (602) of blade row (3), with feeding feed screw mandrel (602) (603), can Double-directional rotary turning set (604) and trundle (605), one end of the blade row (3) offers axially extending Slotted eye (301), it is described feeding feed screw mandrel (602) be located in the slotted eye (301), the nut sleeve (603) is located in groove The end in hole (301) is simultaneously mutually fixed with blade row (3)；The turning set (604) is enclosed on blade row (3), outside the blade row (3) Multiple teeth groove (302) for being spaced apart and being open towards turning set (604) inner peripheral surface, the trundle are offered on side face (605) the inner can be stretched into teeth groove (302), and the outer end of trundle (605) is located in turning set (604) and trundle (605) compression spring (606) is provided with outer end；The inner of the trundle (605) is provided with an inclined plane (609), and this inclines Inclined-plane (609) is partly located in teeth groove (302).

5. align reaming instrument according to claim 4, it is characterised in that：The drive mechanism also includes one along turning set (604) through hole radially is offered in the handle (607) radially extended, the turning set (604), the handle (607) The inner is stretched into the through holes of turning set (604) and is fixedly connected with turning set (604), the trundle (605) and compression spring (606) being positioned radially in the through hole of turning set (604) along turning set (604), and outer end and the handle of compression spring (606) (607) the inner leans.

6. align reaming instrument according to claim 1, it is characterised in that：The reamer (4) is in sleeve-shaped, and reamer (4) is enclosed on It is connected on blade row (3) and with blade row (3) key.

7. the align reaming instrument according to claim 1 or 6, it is characterised in that：The outer peripheral face of the reamer (4) is provided with six roads Spiral cutting sword (401), and circumference of the six road spiral cutting swords (401) along reamer (4) in 63 °, 58.5 °, 58.5 °, 63 °, 58.5 °, 58.5 ° of angle is spaced apart.

8. align reaming instrument according to claim 7, it is characterised in that：The tool cutting edge angle α of the spiral cutting sword (401) is 13 ° -17 °, the helixangleβ of spiral cutting sword (401) is 18 ° -22 °.

9. align reaming instrument according to claim 7, it is characterised in that：The side drift angle γ of the spiral cutting sword (401) is 13°-17°。

10. align reaming instrument according to claim 1, it is characterised in that：Chip removal is offered in the chuck body portion (201) Hole (205), the cavity volume (203) on the inside of chuck body portion (201) and the perimeter on the outside of chuck body portion (201) It is connected by chip-removal hole (205).