CN105598531A - Aligning hinge tool for large rotor flange connection pin hole machining - Google Patents

Abstract

The invention provides an aligning hinge tool for large rotor flange connection pin hole machining. The tool comprises a clamp, a tool array and a reamer fixed to the tool array. The clamp comprises a clamp body and two opposite clamp supporting arm parts, a containing cavity is formed among the clamp body and the two clamp supporting arm parts, and the reamer is located in the containing cavity; the inner side faces of the clamp supporting arm parts are positioning faces parallel to a flange end face, the tool array is rotationally arranged in the two clamp supporting arm parts in a penetrating mode and can move in the axial direction of the tool array, and the axial direction of the tool array is perpendicular to the positioning faces of the clamp supporting arm parts. The flange end face serves as a positioning standard during pin hole machining, pin hole machining precision is greatly improved, coaxiality of pin holes in two rotor flanges and parallelism of the pin holes and the axial direction of a rotor can be guaranteed, finally, the jerk value of a steam turbine rotor shaft system is made to be in a specific range, and normal operation of a steam turbine is guaranteed.

Description

A kind of align reaming instrument of large rotor flange connect pin-and-hole processing use

Technical field

The present invention relates to a kind of steam turbine plant secondary process equipment, particularly relate to a kind of large rotor flange connect pin-and-hole processingWith align reaming instrument.

Background technology

At present, the rotor of large-size steam turbine has weighed hundred tons, and turbine rotor is at high speed (near-sonic speed), high pressure (240 atmospherePress), running for a long time under the environment of high temperature (more than 550 DEG C). Many roots rotors of steam turbine torque transfer syndeton is: adjacentThe end of two roots rotors is equipped with flange, offers multiple along the equally distributed pin-and-hole of circumference of flange direction, two roots rotors on flangeFlange is fixedly connected with by multiple bolts, described bolt is located in the pin-and-hole of two roots rotor end flange, thereby realizes moment of torsionThe output of transmission and output and great power. Such as, the output torque of 1,000,000 KW steam-turbine units is up to 300 tons of riceAbove, and requiring whole rotor axial system mutually beating in tens meters of length very very little, is to be generally not more than 0.05mm,Therefore, its requirement on machining accuracy to pin-and-hole on rotor tip flange is very high. In addition, to other some big machineries, thanAs generator, large pump etc. are all used the rotor of relatively large number, its machining accuracy to pin-and-hole on rotor tip flange also hasVery high requirement.

In the rotor connection (changing two roots rotors in steam turbine) that two are newly dispatched from the factory simultaneously or by turning of newly dispatching from the factorySon when being connected (only changing the roots rotor in steam turbine) with old rotor in a steam turbine, all needs two companies for the treatment ofThe processing of reaming of pin-and-hole on the flange of the rotor connecing, but fraising is at present processed and is had more difficulty:

1, the space of two roots rotor end flange junctions is very little, and any reaming lathe or reaming apparatus all cannot be installed, traditionBe all rely on artificial free-hand fraising, therefore cannot locate, thereby cause the machining accuracy of pin-and-hole on rotor flange (to comprise size essenceDegree, the depth of parallelism etc.), the fineness of pin-and-hole hole wall all do not reach requirement.

2, can not find suitable position at two rotor tip flange connections and remove location and installation instrument, especially wish that pin-and-hole is cutLess and can not be too many except amount, because also need rotor to place under repair after rotor comes into operation a period of time, still needTo carry out align reaming processing to the pin-and-hole on rotor tip flange, therefore need to leave enough allowance; Therefore, at present in fraisingTime can only self position correction with base hole on rotor tip flange, thereby cause pin-and-hole easily hinge partially, and then cause whole turningThe jerk value that sub-axle is is large, does not meet the demands.

3, adopt base hole on rotor tip flange self to position timing, in the repairing of old steam-turbine unit----two roots rotorsOnly change in the situation of a roots rotor, on old rotor, site error, the size etc. of pin-and-hole are not known without exception, add on old rotor and sellThe lane hair distortion in hole, thus on new rotor, the allowance in base hole can only be increased, and at all unprocessed basic fixed position face.

4, it is pressed for time, especially the steam-turbine unit repair cycle very tight because steam-turbine unit generating in a day ahead of time, it just canTo create the wealth of nearly ten million yuan, and traditional pin-and-hole align reaming efficiency is very low, and length consuming time, cannot meet the demands.

Summary of the invention

The shortcoming of prior art in view of the above, the object of the present invention is to provide the high large rotor of a kind of pin-and-hole machining accuracyThe align reaming instrument of flange connect pin-and-hole processing use.

For achieving the above object, the invention provides a kind of align reaming instrument of large rotor flange connect pin-and-hole processing use, for processingThe pin-and-hole being oppositely arranged on the flange of two rotors to be connected, end face of flange and the rotor axial of described rotor are perpendicular, described in joinHinge instrument comprises clamp body, blade row and is fixed on the reamer on blade row, and described clamp body comprises chuck body portion and two phasesThe fixture arranging is propped up to arm, and described chuck body portion and two fixtures prop up between arm and form a cavity volume, and described reamer is positioned at thisIn cavity volume; The medial surface that described fixture props up arm is the locating surface that is parallel to end face of flange, and two fixtures prop up in arm and are all installed withLocation sliding bearing, locates the locating surface that is axially perpendicular to that sliding bearing is coaxially set and locates sliding bearing for two, described inBlade row is rotatable and can axially movably be bearing in the sliding bearing of location; After on the flange that clamp body is enclosed within to two roots rotors,Described cavity volume can holding portion flange and is connected with pin-and-hole to be processed on flange.

Further, the material of described location sliding bearing is copper.

Preferably, after on the flange that clamp body is enclosed within to two roots rotors, fixture props up the locating surface of arm inner side and one and turnsThe end face of flange of son reclines mutually, and another fixture props up the puller bolt that has been threaded in arm, and this puller bolt is along the axle of blade rowProp up in arm and the end of puller bolt and the end face of flange of another roots rotor lean to being located in fixture.

Further, also comprise driving mechanism, described driving mechanism comprise along the axially extended feeding feed of blade row screw mandrel, with enterGive the nut sleeve that feed wire rod thread connects, turning set and trundle that can Double-directional rotary, one end of described blade row offersAxially extended slotted eye, described feeding feed screw mandrel is located in this slotted eye, described nut sleeve be located in the end of slotted eye and withBlade row fixes; Described turning set is enclosed within on blade row, offers multiple spaced apart and opening courts on the outer peripheral face of described blade rowTo the teeth groove of turning set inner peripheral surface, the inner of described trundle can be stretched in teeth groove, the outer end of trundle is located in turning set,And the outer end place of trundle is provided with a Compress Spring; The inner of described trundle is provided with an inclined plane, and this inclined plane part is positioned at toothIn groove.

Preferably, described driving mechanism also comprises a handle radially extending along turning set, in described turning set, radially offersOne through hole, the inner of described handle is stretched in the through hole of turning set and is fixedly connected with turning set, described trundle and compression bulletSpring is along in the through hole that is radially placed on turning set of turning set, and the outer end of Compress Spring and the inner of handle lean.

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

Preferably, the outer peripheral face of described reamer is provided with six road spiral cutting swords, Qie Liu road spiral cutting sword being circumferentially along reamerThe angle intervals of 63 °, 58.5 °, 58.5 °, 63 °, 58.5 °, 58.5 ° distributes.

Further, the tool cutting edge angle α of described spiral cutting sword is 13 °-17 °, and the helixangleβ of spiral cutting sword is 18 °-22 °.

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

Preferably, in described chuck body portion, offer chip-removal hole, the cavity volume that is positioned at chuck body portion inner side be positioned at chuck bodyThe perimeter in portion outside is connected by chip-removal hole.

As mentioned above, the align reaming instrument of the large rotor flange connect pin-and-hole processing use the present invention relates to, has following beneficial effect:

In the application, in the time using two pin-and-holes relative on the flange of two rotors of reamer cutting, axially vertical due to blade rowProp up the locating surface of arm in fixture, and locating surface is parallel to the end face of flange of rotor, thus reamer with the moving direction of blade row, alsoBe exactly the direction of feed of reamer perpendicular to the end face of flange of rotor, thereby make the pin-and-hole that processes perpendicular to the end face of flange of rotor,And be parallel to the axial of rotor, and therefore, in the application, adding the positioning datum in man-hour using end face of flange as pin-and-hole, it improves greatlyThe machining accuracy of pin-and-hole, can ensure the axiality of pin-and-hole and the depth of parallelism of pin-and-hole and rotor axial on two rotor flanges,Finally make the jerk value of steam turbine rotor shaft system within the limits prescribed, ensured the normal operation of steam turbine.

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 is that the A-A of Fig. 1 is to cutaway 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.

Element numbers explanation

1 rotor

101 flanges

102 pin-and-holes

103 end face of flange

2 clamp bodies

201 chuck body portions

202 fixtures prop up arm

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 side portions

404 portions of falling arc-shaped edges

5 location sliding bearings

501 support holes

601 puller bolts

602 feeding feed screw mandrels

603 nut sleeve

604 turning sets

605 trundles

606 Compress Springs

607 handles

608 setscrew nuts

609 inclined planes

8 leveling bolts

9 cushion blocks

Detailed description of the invention

By particular specific embodiment explanation embodiments of the present invention, person skilled in the art scholar can be taken off by this description belowThe content of revealing is understood other advantages of the present invention and effect easily.

Notice, appended graphic the illustrated structure of this description, ratio, size etc., all only in order to coordinate description to discloseContent, understands and reads for person skilled in the art scholar, not in order to limit the enforceable qualifications of the present invention, therefore tool notTechnical essential meaning, the adjustment of the modification of any structure, the change of proportionate relationship or size, is not affecting institute of the present invention energyUnder the effect producing and the object that can reach, all should still drop on disclosed technology contents and obtain in the scope that can contain.Meanwhile, in this description, quote as " on ", the term of D score, " left side ", " right side ", " centre " and " " etc., also only for ease ofUnderstanding of narration, but not in order to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, changing without essenceUnder technology contents, when being also considered as the enforceable category of the present invention.

The application provides a kind of align reaming instrument of large rotor flange connect pin-and-hole processing use, for processing two rotors 1 to be connectedFlange 101 on the pin-and-hole 102 that is oppositely arranged, excise a certain amount of metal level on pin-and-hole 102 hole walls by reamer 4, therebyMake axiality and the pin-and-hole 102 of many groups of two pin-and-holes 102 that are oppositely arranged on the flange 101 of two rotors 1 to be connectedThe depth of parallelism axial with rotor 1 all meets the requirements, and then improves moment of torsion biography between the connected reliability of two roots rotors 1 and rotor 1The reliability of passing. In addition, the end of two roots rotors 1 to be connected all has flange 101, and rotor 1 to be connected have withLower feature: in the time that rotor 1 uses for rotor machining factory the new rotor dispatching from the factory after smooth turning lathe fine finishining, the flange end of new rotorThe dimensional accuracy of face 103 is very high, and end face of flange 103 is axially perpendicular with rotor 1, pre-on the flange 101 of rotor 1First offer base hole; When rotor 1 is, while having moved the old rotor after a period of time in steam turbine, to be opened in rotor 1 flange 101On pin-and-hole 102 produce certain deformation, pin-and-hole 102 sizes not within the limits prescribed, have very large error; But turnSon 1 flange 101 is impaired very little, thus the end face of flange 103 of rotor 1 still perpendicular to rotor 1 axially.

Further, as shown in Fig. 1 or Fig. 3, the align reaming instrument that the application relates to comprises clamp body 2, blade row 3 and is fixed onReamer 4 on blade row 3, described clamp body 2 comprises that chuck body portion 201 and two fixtures that are oppositely arranged prop up arm 202,Two fixtures prop up arm 202 and are located at respectively the two ends place of chuck body portion 201 perpendicular with chuck body portion 201, therefore,Described chuck body portion 201 and two fixtures prop up between arm 202 and form a cavity volume 203, and described reamer 4 is positioned at this cavity volume 203In. The medial surface that described fixture props up arm 202 is the locating surface 204 that is parallel to end face of flange 103, and this locating surface 204 passes throughAfter smooth turning lathe fine finishining, its dimensional accuracy is very high, therefore the flatness of locating surface 204 and smoothness can obtain effectivelyEnsure. Two fixtures prop up in arm 202 and all offer through hole, are provided with to be fixed by screws in fixture and to prop up arm in described through hole5, two location sliding bearings 5 of location sliding bearing on 202 are coaxially set and locate being axially perpendicular to of sliding bearing 5Locating surface 204, offers the support holes 501 perpendicular to locating surface 204 in described location sliding bearing 5, therefore slide in two locationThe support holes 501 of bearing 5 is coaxially set, and described blade row 3 is rotatable and can axially movablely be bearing in two location sliding axlesHold in 5 support holes 501, thus by the principles location blade rows 3 of 2 fixed straight lines, make blade row 3 and locating surface 204 itBetween perpendicularity, ensured pin-and-hole 102 after processing and perpendicularity between end face of flange 103. When clamp body 2 is enclosed withinAfter on the flange 101 of two roots rotors 1, described cavity volume 203 can holding portion flange 101 and with flange 101 on to be processedPin-and-hole 102 is connected. Preferably, described location sliding bearing 5 materials are copper, improve the wearability of location sliding bearing 5,To improve the service life of align reaming instrument.

While using two pin-and-holes 102 relative on the flange 101 of two rotors 1 of above-mentioned align reaming instrument machining, align reaming instrumentDuty have two kinds: 1, vertical, as shown in Figure 1, now, clamp body 2 longitudinal sleeves are at the flange 101 of two roots rotors 1Upper, described chuck body portion 201 vertically extends, described fixture prop up arm 202 horizontal cross extend and be located at respectively fixture thisThe upper end side of body 201 and lower end side; 2, horizontal, as shown in Figure 3, now, clamp body 2 is laterally enclosed within two roots rotors 1On flange 101, described chuck body portion 201 transverse horizontal are extended, and described fixture props up arm 202 and vertically extends and establish respectivelyIn left end side and the right-hand member side of chuck body portion 201. But above-mentioned align reaming instrument is no matter with which kind of state machining flange 101On pin-and-hole 102, the locating surface 204 that axially props up all the time arm 202 perpendicular to fixture of blade row 3, and locating surface 204 is parallelIn the end face of flange 103 of rotor 1, therefore the end face of flange that is axially perpendicular to rotor 1 103 of blade row 3 be parallel to rotor 1Axially, therefore, reamer 4 is with the moving direction of blade row 3, namely the direction of feed of reamer 4 is all the time perpendicular to the method for rotor 1Blue end face 103, thus make the pin-and-hole 102 that processes perpendicular to the end face of flange 103 of rotor 1 and be parallel to the axle of rotor 1To. So, in the application using the end face of flange 103 (preferably adopting the end face of flange 103 of new rotor 1) of rotor 1 as pin-and-hole102 add the positioning datum in man-hour, and the machining accuracy that it has improved pin-and-hole 102 greatly can ensure two rotors, 1 flange 101The depth of parallelism that the axiality of upper many groups of two pin-and-holes 102 that are oppositely arranged and pin-and-hole 102 are axial with rotor 1, finally makesThe jerk value of turbine rotor 1 axle system within the limits prescribed, has ensured the normal operation of steam turbine.

Preferably, as shown in Figure 1, in described chuck body portion 201, offer chip-removal hole 205, be positioned at chuck body portion 201The cavity volume 203 of inner side is connected by chip-removal hole 205 with the perimeter that is positioned at chuck body portion 201 outsides, thereby will exciseUnder metal fillings discharge.

Further, as shown in Fig. 1 or Fig. 3, after on the flange 101 that clamp body 2 is enclosed within to two roots rotors 1, a folderTool props up the locating surface 204 of arm 202 inner sides and the end face of flange 103 of a roots rotor 1 reclines mutually, and another fixture props up arm 202In the puller bolt 601 that has been threaded, this puller bolt 601 along blade row 3 be axially located in fixture prop up in arm 202,And the end face of flange 103 of the end of puller bolt 601 and another roots rotor 1 leans, thereby the position of clamp body 2 is fixedLive. Meanwhile, two the leveling bolts 8 that have been threaded in described chuck body portion 201, leveling bolt 8 is along blade row 3 radiallyBe located in chuck body portion 201 and the end of two leveling bolts 8 leans with the outer peripheral face of two roots rotors 1 respectively, fromAnd adjustable vertical chuck body portion 201 the perpendicularity and horizontal chuck body portion 201 the levelness in man-hour that adds in man-hour that adds.

Further, also comprise driving mechanism, for driving blade row 3 rotations and blade row 3 to move axially along self, realize cutterRow 3 drives again reamer 4 feeds when driving reamer 4 to rotate; In addition, due to the space of pin-and-hole 102 processing place veryLittle, therefore the application provides preferably driving mechanism of a kind of structure. Specifically, as depicted in figs. 1 and 2, described driving mechanism bagDraw together the nut sleeve 603 that is threaded along the axially extended feeding feed of blade row 3 screw mandrel 602, with feeding feed screw mandrel 602, can be twoTo the turning set 604 and the trundle 605 that rotate, one end of described blade row 3 offers axially extended slotted eye 301, described inFeeding feed screw mandrel 602 is located in this slotted eye 301 and with blade row 3 and coaxially arranges, and described nut sleeve 603 is located in slotted eye301 end also fixes by screw and blade row 3; Described turning set 604 is enclosed within on blade row 3, outside described blade row 3On side face, offer the teeth groove 302 of multiple spaced apart and openings towards turning set 604 inner peripheral surfaces, described teeth groove 302 is along cutterRow 3 radially extension, the inner of described trundle 605 can be stretched in teeth groove 302, and the outer end of trundle 605 is located in rotationIn the cover 604 and outer end place of trundle 605 is provided with a Compress Spring 606; The inner of described trundle 605 is provided with an inclinationFace 609, the inner side part on this inclined plane 609 is arranged in teeth groove 302, and the Outboard Sections on inclined plane 609 is positioned at outside teeth groove 302,And inclined plane 609 is outward-dipping along the rotation direction reversed of blade row 3. Specifically, if blade row 3 is to clockwise rotate, tiltFace 609 is outward-dipping in the counterclockwise direction; If blade row 3 is to rotate counterclockwise, inclined plane 609 leans outward along clockwise directionTiltedly.

When machining pin-and-hole 102, use instrument (such as clamp) is clamped feeding feed screw mandrel 602, is made feeding feed screw mandrel602 do not rotate, turning set 604 described in forward rotation, and turning set 604 drives trundle 605 to rotate, outside trundle 605The 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 synchronouslyRotate, and nut sleeve 603 and feeding feed screw mandrel 602 do not rotate for threaded engagement and feeding feed screw mandrel 602, therefore nutCover 603 drives blade row 3 to move axially along feeding feed screw mandrel 602. Meanwhile, because the space of pin-and-hole 102 processing place is very little,Therefore 360 ° of ground of inconvenient use instrument rotate described turning set 604 along a direction always; Therefore, when by turning set 604 along oneAfter angle of individual direction forward rotation, then turning set 604 is rotated backward, it is reverse that turning set 604 drives trundle 605Rotate, now, the inclined plane 609 on trundle 605 is that line contacts with the teeth groove limit of blade row 3, and contact force is not between the twoCan drive blade row 3 to rotate, thus trundle 605 can from the teeth groove of blade row 3 302, successfully skid off, and trundle 605 pressUnder the effect of contracting spring 606, after circumferentially moving, the outer peripheral face of blade row 3 stretches into again in next teeth groove 302, now, and again for makingProvide rotation space with turning set 604 described in instrument forward rotation. That is to say, by turning set described in forward rotation 604Angle, rotate backward 604 1 angles of turning set described in 604 1 angles of described turning set, forward rotation, oppositely turnMoving described turning set 604 ... such mode makes blade row 3, and along a direction, (this direction is the forward rotation side of turning set 604To) rotate continuously, and then when realizing blade row 3 and drive reamer 4 evenly to rotate along same direction, blade row 3 drives reamer4 can also evenly move axially in same direction, complete the processing to pin-and-hole 102. In the present embodiment, reamer 4 rotates oneCircle, its axial feed amount is 0.5mm.

Preferably, for the ease of using the clamp feeding feed screw mandrel 602 that is clamped, as shown in Fig. 1 or Fig. 3, described in enterBe fixed with a setscrew nut 608 that is positioned at slotted eye 301 outsides on blade row 3 to the lower end of feed screw mandrel 602. Meanwhile, described in, enterAlso be provided with a cushion block 9 being placed on rotor 1 to the end of feed screw mandrel 602, can make by the cushion block 9 of selecting different sizesThe align reaming instrument that the application relates to is applicable to the processing of pin-and-hole 102 on rotor 1 flange 101 of all size. Moreover, by drivingAfter actuation mechanism drives reamer 4 feeds a certain amount of, if the residue length of feeding feed screw mandrel 602 in blade row 3 slotted eyes 301 can notMake the whole feeds of reamer 4 complete, now, can fix handle 607, rotate feeding feed screw mandrel 602, by feeding feed screw mandrel602 screw in the slotted eye 301 of blade row 3, afterwards can normal operating.

Further, for the ease of rotating described turning set 604, as depicted in figs. 1 and 2, described driving mechanism also comprises oneAlong the handle 607 radially extending of turning set 604, in described turning set 604, radially offer a through hole, described handle 607The inner stretch in the through hole of turning set 604 and be fixedly connected with described trundle 605 and Compress Spring 606 with turning set 604Along in the through hole that is radially placed on turning set 604 of turning set 604, and the inner of the outer end of Compress Spring 606 and handle 607Lean. Therefore, when forward rotation handle 607 constantly, rotate backward handle 607, forward rotation handle 607, oppositely turnFixed handle 607 ... when can making blade row 3 drive reamer 4 to rotate along same direction, blade row 3 drive reamer 4 can also withIn a direction, move axially, complete the processing to pin-and-hole 102.

Further, described reamer 4 is sleeve-shaped, and reamer 4 is enclosed within on blade row 3 and with blade row 3 keys and is connected; Therefore, instituteState thicker that blade row 3 can do, and then reduce the strain of blade row 3 in pin-and-hole 102 process, to improve pin-and-hole 102Machining accuracy, and the external diameter of reamer 4 also can do larger, reamer 4 external diameters are approached and the aperture of pin-and-hole 102,Can cut with scissors whole hole wall, effectively solve pin-and-hole 102 linearity issues. In addition, the outer surface of described blade row 3 can carry outNitrogen treatment, to improve the case hardness of blade row 3, the progressive strain that reduces blade row 3.

In addition, before the pin-and-hole 102 on processing rotor 1 flange 101, can process many hinges that external diameter is differed in size at the sceneCutter 4, if external diameter is 58mm, 59mm, 60mm, 61mm, 62mm, 63mm, 64mm, 65mm etc., every hingeThe structure of cutter 4 is all identical, therefore, when the pin-and-hole 102 on processing rotor 1 flange 101, can find out one and pin-and-hole at the sceneReamer 4 that 102 diameters relatively approach, be contained on blade row 3, thereby can be reduced the excision amount of pin-and-hole 102 hole walls, ensured pinAfter 102 processing of hole, still there is more allowance, be beneficial to the again processing of next maintenance stage to pin-and-hole 102. When fraising,Can choose and many ascending external diameter reamer being arranged in order 4 be carried out to repeatedly feed to pin-and-hole 102, improve pin-and-hole 102 with thisMachining accuracy, can also solve the surplus eccentricity issues before pin-and-hole 102 processing.

Further, as shown in Figure 4 and Figure 5, the outer peripheral face of described reamer 4 is provided with six road spiral cutting swords 401, and sixSpiral cutting sword 401 in road is along the angle intervals distribution that is circumferentially 63 °, 58.5 °, 58.5 °, 63 °, 58.5 °, 58.5 ° of reamer 4.For the mode that in prior art, multiple tracks spiral cutting sword 401 is spacedly distributed, the unequal interval distribution tool in the applicationThere is following advantage: A, be to use the dividing head control angle of 1:40 when reamer 4 in processing, the hand circle of dividing head, itsThe angle turning over is 9 °, therefore the machining angle of 63 ° and 58.5 ° is respectively the dividing head of hand 7 circle dividing heads and hand 6 circles half,Therefore can accurately control the rotation number of turns of dividing head, improve the machining accuracy of reamer 4. B, especially, six road spiral cutting swords401 unequal intervals distribute, when the hand handle 607 of every forward, and when handle 607 drives reamer 4 to rotate to stop after an angle,The spiral cutting sword 401 of angle periphery is all parked in the diverse location place of pin-and-hole 102 hole walls, therefore, can not produce resonance, fraisingProcess is highly stable.

Further, as shown in Figure 5, between adjacent twice spiral cutting sword 401, form chip area 402, chip area 402A side near one spiral cutting sword 401 is provided with right-angle side portion 403, and extend the end of a right-angle side of this right-angle side portion 403To the cutting edge place of spiral cutting sword 401, thereby be convenient to processing; Chip area 402 is near a side of another road spiral cutting sword 401The portion of falling arc-shaped edges of being provided with 404, the one end of being somebody's turn to do the portion of falling arc-shaped edges 404 extends to the end of another right-angle side of right-angle side portion 403,The other end of the portion of falling arc-shaped edges 404 extends to the cutting edge place of spiral cutting sword 401, thereby makes to add at the scene man-hour reamer 4Spiral cutting sword 401 has the grinding allowance of 1-2mm, and then has expanded the scope that reamer 4 outside dimensions are selected, and reduces with thisThe quantity of the reamer 4 of required preparation before on-the-spot fraising. In addition, as shown in Figure 4, the tool cutting edge angle α of described spiral cutting sword 401Be 13 °-17 °, tool cutting edge angle α is preferably 15 °, reduces the cutting width of reamer 4 with this, thereby reduces smear metal power; Spiral is cutThe helixangleβ of cutting sword 401 is 18 °-22 °, and β is preferably 20 °. Moreover, in the present embodiment, form at spiral cutting sword 401The cutting edge place chamfering again of tool cutting edge angle, thereby the side drift angle γ of formation spiral cutting sword 401, side drift angle γ is 13 °-17 °, side drift angleγ is preferably 15 °, thereby can reduce thickness of cutting, improves the fineness of machined surface.

Above-described embodiment is all to the processing of reaming of the pin-and-hole 102 on the flange 101 of two roots rotors 1, certainly, and can also be rightThe flange of rotor carries out same fraising processing with the pin-and-hole on coupling flange.

In sum, the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.

Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention. Anyly be familiar with this skillThe personage of art all can, under spirit of the present invention and category, modify or change above-described embodiment. Therefore, such asUnder have in technical field conventionally know the knowledgeable do not depart under disclosed spirit and technological thought, complete all etc.Effect is modified or is changed, and must be contained by claim of the present invention.

Claims (10)

1. an align reaming instrument for large rotor flange connect pin-and-hole processing use, for processing the flange (101) of two rotors to be connected (1)On the pin-and-hole (102) that is oppositely arranged, the end face of flange (103) of described rotor (1) is axially perpendicular with rotor (1),It is characterized in that: described align reaming instrument comprises clamp body (2), blade row (3) and be fixed on the reamer (4) on blade row (3),Described clamp body (2) comprises that chuck body portion (201) and two fixtures that are oppositely arranged prop up arm (202), described inChuck body portion (201) and two fixtures prop up and between arm (202), form a cavity volume (203), described reamer (4) positionIn this cavity volume (203); Described fixture props up the medial surface of arm (202) for being parallel to the location of end face of flange (103)Face (204), two fixtures prop up in arm (202) and are all installed with location sliding bearing (5), locate sliding bearings (5) for twoBe coaxially set and locate sliding bearing (5) be axially perpendicular to locating surface (204), described blade row (3) rotatable andCan axially movably be bearing in location sliding bearing (5); When clamp body (2) being enclosed within to the flange of two roots rotors (1)(101) after upper, described cavity volume (203) can holding portion flange (101) and with the upper pin to be processed of flange (101)Hole (102) is connected.

2. align reaming instrument according to claim 1, is characterized in that: the material of described location sliding bearing (5) is copper.

3. align reaming instrument according to claim 1, is characterized in that: when clamp body (2) being enclosed within to the method for two roots rotors (1)After blue (101) are upper, a fixture props up the locating surface (204) of arm (202) inner side and the flange end of a roots rotor (1)Face (103) reclines mutually, and another fixture props up the puller bolt (601) that has been threaded in arm (202), and this holds out against spiral shellBolt (601) along blade row (3) be axially located in fixture prop up in arm (202) and the end of puller bolt (601) withThe end face of flange (103) of another roots rotor (1) leans.

4. align reaming instrument according to claim 1, is characterized in that: also comprise driving mechanism, described driving mechanism comprises along cutterRow's (3) axially extended feeding feed screw mandrel (602), the nut sleeve (603) being threaded with feeding feed screw mandrel (602),Turning set (604) and trundle (605) that can Double-directional rotary, one end of described blade row (3) offers and extends axiallySlotted eye (301), described feeding feed screw mandrel (602) is located in this slotted eye (301), described nut sleeve (603)Be located in the end of slotted eye (301) and fix with blade row (3); It is upper that described turning set (604) is enclosed within blade row (3),On the outer peripheral face of described blade row (3), offer the teeth groove of multiple spaced apart and openings towards turning set (604) inner peripheral surface(302), the inner of described trundle (605) can be stretched in teeth groove (302), and the outer end of trundle (605) is located inIn turning set (604) and the outer end place of trundle (605) is provided with a Compress Spring (606); Described trundle (605)The inner be provided with an inclined plane (609), this inclined plane (609) part is arranged in teeth groove (302).

5. align reaming instrument according to claim 4, is characterized in that: described driving mechanism also comprises that one along turning set (604)Radially extend handle (607), described turning set radially offers a through hole in (604), described handle (607)The inner is stretched in the through hole of turning set (604) and is fixedly connected with turning set (604), described trundle (605) andCompress Spring (606) is along in the through hole that is radially placed on turning set (604) of turning set (604), and Compress Spring (606)Outer end and the inner of handle (607) lean.

6. align reaming instrument according to claim 1, is characterized in that: described reamer (4) is sleeve-shaped, and reamer (4) is enclosed withinBlade row (3) is gone up and is connected with blade row (3) key.

7. according to the align reaming instrument described in claim 1 or 6, it is characterized in that: the outer peripheral face of described reamer (4) is provided with six roadsSpiral cutting sword (401), Qie Liu road spiral cutting sword (401) along reamer (4) be circumferentially 63 °, 58.5 °, 58.5 °,The angle intervals of 63 °, 58.5 °, 58.5 ° distributes.

8. align reaming instrument according to claim 7, is characterized in that: the tool cutting edge angle α of described spiral cutting sword (401) is13 °-17 °, the helixangleβ of spiral cutting sword (401) is 18 °-22 °.

9. align reaming instrument according to claim 7, is characterized in that: the side drift angle γ of described spiral cutting sword (401) is13°-17°。

10. align reaming instrument according to claim 1, is characterized in that: the row of offering in described chuck body portion (201)Bits holes (205), are positioned at the cavity volume (203) of chuck body portion (201) inner side and are positioned at chuck body portion (201) outsidePerimeter be connected by chip-removal hole (205).