CN105312864B - The processing method of moving turbine blade - Google Patents
The processing method of moving turbine blade Download PDFInfo
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- CN105312864B CN105312864B CN201510899892.8A CN201510899892A CN105312864B CN 105312864 B CN105312864 B CN 105312864B CN 201510899892 A CN201510899892 A CN 201510899892A CN 105312864 B CN105312864 B CN 105312864B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/02—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from one piece
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Abstract
The invention discloses a kind of processing method of moving turbine blade, comprise the following steps：A, unified moving turbine blade blank and the mach positioning datum of moving turbine blade blank；B, positioning is fixed to moving turbine blade blank, and be processed according to positioning datum；C, grinding form the tenon tooth of moving turbine blade, are positioned with processing tenon tooth, process the sawtooth of the supramarginal plate, inframarginal and integral shroud of moving turbine blade；Moving turbine blade after d, processing is heat-treated and shot-peening, forms the moving turbine blade of shaping.By machine plus unified with rough benchmark, anchor point and the machine of the die for blank of realization add tenon tooth anchor point consistent, eliminate the skimble-scamble error of benchmark, reduce the number of times of benchmark conversion, improve conversion accuracy, reach the blade profile position degree requirement of design；Improve the precision for the coordinate position degree set up benchmark after processing and evaluated.Technological equipment and manufacture suitable for aero-turbine working-blade.
Description
Technical field
The present invention relates to aero-engine technological equipment and manufacturing technology field, especially, it is related to a kind of turbine leaf
The processing method of piece.
Background technology
New engine blade also brings new problem while engine performance is improved for process technology.Machinery
Blade profile position degree, established angle, integral shroud sawtooth equidimension are interrelated in processing, and precision is high, it is difficult to be able to it is completely qualified.Wherein weigh
Want factor difficult for precision positioning, adding after multiple conversions accumulated error to have been over the precision of blade in itself from blank to machine will
Ask, these turn into the key factor of limit product quality and qualification rate at this stage.
New engine blade design structure is complicated, and blade is space curved surface, and tenon tooth is fir-tree type structure, and integral shroud is carried
Complicated zigzag.In addition, across the rod size for the similar power turbine working-blade tenon tooth processed more in the past reduces half, it is long
Degree really adds one times, and the thickness of blade profile is also significantly thinned.The characteristics of this small tenon tooth, long thin-walled is subsequent mechanical processing, inspection
Survey brings new challenge.Blank sheet is as blade without surplus hot investment casting part, and wherein machine adds position mainly to have tenon tooth, tenon two
End face, the side of listrium four, leaf basin, back of the body both sides sawtooth.
Existing moving turbine blade processing method：Listrium at upper and lower the two of blade is first processed, one is by blank blade profile benchmark
It is transformed on machine plus listrium, two be the upper and lower square listrium for processing convenient positioning, final to facilitate clamping to be processed further
Part benchmark (reference for assembling) tenon tenon tooth.Processing inframarginal inclined-plane size and integral shroud again are positioned with the tenon tooth processed again
Sawtooth, completes final part blade profile position degree size and integral shroud size.It is with the blank blade four of selection to process listrium method
Individual mathematical point does measurement point, and grinding upper and lower listrium face special measuring tool and standard component, which are compared, to be measured to four measurement point values.
The shortcoming of prior art is：This method tedious process, efficiency are low；Blank adds benchmark disunity, it is necessary to one by one with machine
Blade measuring, calculating and adjustment, precision are low；Benchmark, which needs to change twice, causes accumulated error big, and machine adds rear size easily overproof.Should
Processing method is easily influenceed by actual blade profile profile, in order to ensure equivalent, it is necessary to which established angle is carried out into angle adjustment.Blade
Rough benchmark is changed to listrium, is then changed again from listrium to tenon tooth, Reference Transforming accumulated error exceeds well over machine and adds itself
Precision prescribed.So be often that rough benchmark checks that part is qualified in actual processing, qualified, the tenon tooth that measures part in equivalent processing
It is overproof with final smart benchmaring blade profile position degree and established angle after grinding.Sidewindered when three coordinate metrologies are detected with tenon tooth two
Centre axis Z is set up in rod positioning, and because tenon tooth is no more than 0.01 offsetting in itself, this error has a strong impact on long thin wall vane Z axis
The accuracy of foundation.Assuming that it is limiting condition 0.01 that both sides tenon tooth, which offsets, such Z axis is in blade tip position and real Z axis position
Deviation is shown in that 4.1.2 is described in detail up to 0.22.So the method that tradition individually sets up coordinate basis with tenon tooth be not just applicable.
The content of the invention
The invention provides a kind of processing method of moving turbine blade, to solve existing moving turbine blade processing side
The problem of method, existence position degree and overproof established angle, tenon tooth, which offsets, has the technical problem that mistake judges to blade profile benchmark.
The present invention provides a kind of processing method of moving turbine blade, comprises the following steps：A, unified moving turbine blade
Blank and the mach positioning datum of moving turbine blade blank；B, moving turbine blade blank is fixed positioning, and according to
It is processed according to positioning datum；C, grinding form the tenon tooth of moving turbine blade, are positioned with processing tenon tooth, process
The sawtooth of the supramarginal plate of moving turbine blade, inframarginal and integral shroud；D, processing after moving turbine blade be heat-treated and
Shot-peening, forms the moving turbine blade of shaping.
Further, step c specific procedure of processing is：Two inclined-planes of the leaf basin inframarginal of processing moving turbine blade,
Process two inclined-planes of blade back inframarginal and process two sawtooth of integral shroud.
Further, the determination of positioning datum is comprised the following steps that in step a：In the blade leading edge of moving turbine blade
And A1 points and A2 points, and A1 points and A2 points difference are determined at the inside 2mm-5mm of plate edge of blade exhaust side both direction respectively
Chosen to end position to increase at the distance between 2 points, the X-direction of coordinate is determined with A1 points and A2 points；Based on X-axis,
And Y direction and Z-direction are drawn according to the processing entity of moving turbine blade blank, so as to set up three-dimensional coordinate system.
Further, the blade tip section of moving turbine blade blank is intercepted in X-axis, the convex surface tangent line in blade tip section is taken
Peak is used as A3 points；A3 points are in the centre position of back of the body arc tolerance band, so that the theoretical curve of back of the body arc falls in back of the body arc tolerance band
It is interior, so as to ensure machining accuracy.
Further, in the supramarginal plate centre position and inframarginal centre position of moving turbine blade air inlet edge direction point
Xuan Qu not B1 points and B2 points；B1 points and B2 are respectively in the listrium mid-depth of present position short transverse.
Further, it is vented the maximum region in edge direction upper periphery space in moving turbine blade inframarginal and chooses and a little makees
For C1 points；Using C1 points as radial reference, rested against for follow-up machining fixture alignment pin.
Further, five points one lines are selected according to moving turbine blade blank dimension；Whirlpool is limited with A1 points, A2 points and A3 points
Take turns the movement of working-blade blank Y-axis and the rotation of X/Y plane and YZ planes；With B1 points and B2 points limitation X-axis movement and
The rotation of XZ planes；The movement of Z axis is limited with C1 points.
Further, using A1 points, A2 points, B1 points, B2 points, 5 points of C1 points and blade tip section the back of the body camber line a line as
Moving turbine blade blank and the mach positioning datum of moving turbine blade blank.
Further, when being ground tenon tooth, it is ensured that grind position degree relation of the tenon tooth with respect to blade profile center come in XY coordinates
Plane ± 0.28mm；Be ground integral shroud sawtooth when, it is ensured that the size of sawtooth with respect to the coordinate system reference position degree that tenon tooth is set up ±
0.02mm；The sawtooth for being ground tenon tooth and grinding integral shroud is creep feed grinding.
Further, clamping device when processing tenon tooth includes chuck body, each for fixed turbine working-blade blank
The pressure head of individual positioning datum point, the housing screw for clamping moving turbine blade blank and for finely tuning each positioning datum
The governor motion of point；Clamping device when processing blade includes firm banking, and firm banking is provided with the folder for being used for clamping tenon tooth
Head, the support member to support moving turbine blade blank from moving turbine blade blank bottom, for from moving turbine blade
Blank laterallys secure the steel band of moving turbine blade blank and positioned opposite and be resisted against moving turbine blade blank with chuck
Integral shroud sawtooth end backing pin；Clamping device after tenon tooth completion of processing includes fixed platform, in fixed platform and be used for
The support for supporting moving turbine blade blank, the teeth groove being held on by roller in the teeth groove of tenon tooth are pressed from both sides.
The invention has the advantages that：
The processing method of moving turbine blade of the present invention, by machine plus unified with rough benchmark, the die for blank of realization is determined
Site adds tenon tooth anchor point consistent with machine, eliminates the skimble-scamble error of benchmark, thus by conventional blank inspection-part
Three sets of frames of reference in processing-part checking process are reduced to blank inspection, two sets of frames of reference of processing, reduce
The number of times of benchmark conversion, improves conversion accuracy, reaches the blade profile position degree requirement of design；With blank measuring basis positioning and clamping
Blade, directly processes tenon tooth；Positioned and clamped with tenon tooth, processing inlet and outlet side tenon end surface and tenon tooth top；Added with tenon tooth positioning
Clamp, each face of processing inframarginal；Clamping is positioned with tenon tooth, integral shroud sawtooth is processed, realizes tenon tooth and integral shroud, tenon tooth and blade
Position relationship accurate determination, improve the precision of coordinate position degree set up benchmark after processing and evaluated, control in theoretical position
Within the 0.28mm put.Technological equipment and manufacture suitable for aero-turbine working-blade.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is further detailed explanation.
Brief description of the drawings
The accompanying drawing for constituting the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structured flowchart of the processing method of the moving turbine blade of the preferred embodiment of the present invention；
Fig. 2 is the structural representation of the moving turbine blade blank of the preferred embodiment of the present invention；
Fig. 3 is one of structural representation of five points one lines foundation of the preferred embodiment of the present invention；
Fig. 4 is the two of the structural representation of the five points one lines foundation of the preferred embodiment of the present invention；
The structural representation of clamping device when Fig. 5 is the processing tenon tooth of the preferred embodiment of the present invention；
Fig. 6 is Fig. 5 left view；
Fig. 7 is Fig. 5 rearview；
The structural representation of clamping device when Fig. 8 is the processing blade of the preferred embodiment of the present invention；
The structural representation of clamping device when Fig. 9 is the processing tenon tooth of the preferred embodiment of the present invention；
Figure 10 is Fig. 9 rearview.
Marginal data：
1st, chuck body；2nd, pressure head；3rd, housing screw；4th, governor motion；5th, firm banking；6th, chuck；7th, support member；8、
Steel band；9th, backing pin；10th, fixed platform；11st, support；12nd, roller；13rd, teeth groove is pressed from both sides；14th, moving turbine blade blank.
Embodiment
Embodiments of the invention are described in detail below in conjunction with accompanying drawing, but the present invention can be limited by following and
The multitude of different ways of covering is implemented.
Fig. 1 is the structured flowchart of the processing method of the moving turbine blade of the preferred embodiment of the present invention；Fig. 2 is that the present invention is excellent
Select the structural representation of the moving turbine blade blank of embodiment；Fig. 3 is that five points one lines of the preferred embodiment of the present invention are set up
One of structural representation；Fig. 4 is the two of the structural representation of the five points one lines foundation of the preferred embodiment of the present invention；Fig. 5 is this hair
The structural representation of clamping device during the processing tenon tooth of bright preferred embodiment；Fig. 6 is Fig. 5 left view；After Fig. 7 Fig. 5
View；The structural representation of clamping device when Fig. 8 is the processing blade of the preferred embodiment of the present invention；Fig. 9 is of the invention preferred
The structural representation of clamping device during the processing tenon tooth of embodiment；Figure 10 is Fig. 9 rearview.
As shown in figure 1, the processing method of the moving turbine blade of the present embodiment, comprises the following steps：A, unified turbine work
Make blade blank 14 and the mach positioning datum of moving turbine blade blank 14；B, moving turbine blade blank 14 is consolidated
Positioning, and be processed according to positioning datum；C, grinding form the tenon tooth of moving turbine blade, are entered with processing tenon tooth
Row positioning, processes the sawtooth of the supramarginal plate, inframarginal and integral shroud of moving turbine blade；Moving turbine blade after d, processing enters
Row heat treatment and shot-peening, form the moving turbine blade of shaping.The processing method of moving turbine blade of the present invention, by machine plus and hair
Base unifying datum, anchor point and the machine of the die for blank of realization add tenon tooth anchor point consistent, eliminate the skimble-scamble error of benchmark,
Three sets of frames of reference in conventional blank inspection-part processing-part checking process are thus reduced to blank inspection
Look into, process two sets of frames of reference, reduce the number of times of benchmark conversion, improve conversion accuracy, reach the blade profile position of design
Degree is required；With blank measuring basis positioning and clamping blade, tenon tooth is directly processed；Positioned and clamped with tenon tooth, process inlet and outlet side tenon
End surface and tenon tooth top；Clamping, each face of processing inframarginal are positioned with tenon tooth；Clamping, processing integral shroud saw are positioned with tenon tooth
Tooth, realizes the accurate determination of tenon tooth and the position relationship of integral shroud, tenon tooth and blade, sets up benchmark after improving processing and evaluates
The precision of coordinate position degree, is controlled within the 0.28mm of theoretical position.Suitable for the work of aero-turbine working-blade
Skill is equipped and manufactured.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Figure 10, in the present embodiment, step c tool
Body procedure of processing is：Process moving turbine blade leaf basin inframarginal two inclined-planes, process blade back inframarginal two inclined-planes and
Process two sawtooth of integral shroud.
As shown in Figure 1, Figure 2 and Figure 3, in the present embodiment, the determination of positioning datum is comprised the following steps that in step a：In whirlpool
Take turns working-blade blade leading edge and blade exhaust side both direction plate edge inside 2mm-5mm place respectively determine A1 points with
A2 points.A1 points and A2 points are chosen to increase at the distance between 2 points to end position respectively, and the X of coordinate is determined with A1 points and A2 points
Direction of principal axis.Y direction and Z-direction are drawn based on X-axis, and according to the processing entity of moving turbine blade blank 14, from
And set up three-dimensional coordinate system.
As shown in Figure 1, Figure 2 and Figure 4, in the present embodiment, the blade tip that moving turbine blade blank 14 is intercepted in X-axis is cut
Face, takes the convex surface tangent line peak in blade tip section as A3 points.A3 points are in the centre position of back of the body arc tolerance band, so that back of the body arc
Theoretical curve fall the back of the body arc tolerance band in, so as to ensure machining accuracy.
As shown in Figure 1, Figure 2 and Figure 3, in the present embodiment, in the supramarginal plate interposition of moving turbine blade air inlet edge direction
Put and B1 points and B2 points are chosen in inframarginal centre position respectively.B1 points and B2 are thick in the listrium of present position short transverse respectively
Degree center.
As shown in Figure 1, Figure 2 and Figure 3, it is empty in moving turbine blade inframarginal exhaust edge direction upper periphery in the present embodiment
Between maximum region choose and be a little used as C1 points.Using C1 points as radial reference, rested against for follow-up machining fixture alignment pin.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Figure 10, in the present embodiment, according to turbine work
Make the line of 14 size selection of blade blank five points one.The movement of moving turbine blade blank 14Y axles is limited with A1 points, A2 points and A3 points
And the rotation of X/Y plane and YZ planes.With the movement of B1 points and B2 points limitation X-axis and the rotation of XZ planes.Limited with C1 points
The movement of Z axis.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Figure 10, in the present embodiment, with A1 points, A2
The line that camber line is carried on the back in point, B1 points, B2 points, 5 points of C1 points and blade tip section is used as moving turbine blade blank 14 and turbine work
Make the mach positioning datum of blade blank 14.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Figure 10, in the present embodiment, it is ground tenon tooth
When, it is ensured that position degree relation of the tenon tooth with respect to blade profile center come is ground in XY coordinate planes ± 0.28mm.It is ground the saw of integral shroud
During tooth, it is ensured that the size of sawtooth is with respect to the coordinate system reference position degree ± 0.02mm that tenon tooth is set up.It is ground tenon tooth and grinding leaf
The sawtooth of hat is creep feed grinding.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Figure 10, in the present embodiment, during processing tenon tooth
Clamping device include chuck body 1, the pressure head 2 for each positioning datum point of fixed turbine working-blade blank 14, be used for
Clamp the housing screw 3 of moving turbine blade blank 14 and the governor motion 4 for finely tuning each positioning datum point.Process leaf
Clamping device during body includes firm banking 5, firm banking 5 be provided be used to clamping tenon tooth chuck 6, to from turbine
The bottom of blade blank 14 supports the support member 7 of moving turbine blade blank 14, for laterally solid from moving turbine blade blank 14
Determine the steel band 8 of moving turbine blade blank 14 and positioned opposite and be resisted against the leaf of moving turbine blade blank 14 with chuck 6
It is preced with the backing pin 9 at sawtooth end.Clamping device after tenon tooth completion of processing includes fixed platform 10, in fixed platform 10 and be used for
The support 11 of support moving turbine blade blank 14, the teeth groove being held on by roller 12 in the teeth groove of tenon tooth press from both sides 13.
There is provided a kind of processing method of moving turbine blade during implementation.Specific step：A1 points, the choosing of A2 point coordinates X-direction
It is taken as at the inside 3mm of both direction listrium of blade inlet and outlet side, principle is to try to close to end positions, the spacing of 2 points of increase
From；Y-direction and Z-direction are then physically drawn according to the determination of X-coordinate in blank.A3 point coordinates is chosen for A1 points, A2 points in the same direction,
On blade tip section and with A1 points, the parallel lines of A2 point lines, tangent line peak is defined as A3 points, and is back of the body arc tolerance band
Centre position on, so carry on the back arc theoretical curve fall to ensure machining accuracy in tolerance range.B1 points, B2 points are chosen for leading edge
The upper and lower listrium centre position in direction, the listrium mid-depth of short transverse.C1 point coordinates be inframarginal exhaust edge direction space compared with
Big region is chosen a little as radial reference, facilitates follow-up machine to add clamp locating pin to rest against.Selected according to blank accessory size
The A3 point limit features Y movements and X, Y plane Y, Z plane that A1 points, A2 points and blade tangent line cross are rotated.B1 points, B2 points limitation X
Direction is moved and X, Z plane are rotated, the limitation Z movements of C1 points.
The main points one of processing：Ensure to grind position degree relation of the tenon tooth with respect to blade profile center come during mill tenon in X, Y Two
Ge planes ± 0.28mm；The main points two of processing：When grinding the sawtooth pattern of integral shroud, it is ensured that the size of sawtooth is with respect to the coordinate that tenon tooth is set up
It is benchmark, position degree ± 0.02mm；Processing method is all creep feed grinding.
Because blank is blade profile precision castings, appearance and size is organic plus is collectively forming with casting, inevitably has benchmark to turn
The transformed error that tape swapping comes.To reduce error as far as possible and truly reflecting part status, unify the benchmark that blank and machine add first, adopt
Add blade back inframarginal A1 points with the upper and lower listrium B1 points of air inlet edge direction and B2 points, radial passage point, tangent line is determined on A2 points and blade
A3 points, 5 points add one line control blank X, Y, the movement of Z-direction and around X, Y, Z-direction rotation.A line is added to position with 5 points
Grinding tenon tooth, then with tenon tooth positioning processing leaf basin, the inclined-plane of blade back inframarginal two, the sawtooth of integral shroud two, each position is once
Shaping, fixture uses tenon tooth precision positioning and blade A3 point auxiliary positioning modes.Processing route is as follows：
Machine adds with rough benchmark after reunification, and anchor point and the machine of the die for blank of realization add tenon tooth anchor point consistent, eliminates
The skimble-scamble error of benchmark, thus by three sets of benchmark in conventional blank inspection-part processing-part checking process
Coordinate system is reduced to blank inspection (part processing)-part and checks two sets of frames of reference, reduces the number of times of benchmark conversion,
Conversion accuracy is improved, the blade profile position degree requirement of design is reached.With blank measuring basis positioning and clamping blade, tenon is directly processed
Tooth；Positioned and clamped with tenon tooth, processing inlet and outlet side tenon end surface and tenon tooth top；Clamping is positioned with tenon tooth, inframarginal is processed
Each face；Clamping is positioned with tenon tooth, integral shroud sawtooth is processed.
The detection of part after processing
By the moving turbine blade simple Z axis that with tenon tooth roller defines part of the data display for small tenon tooth, long thin-walled
It can be influenceed by tenon tooth offsetting amount.Measure and carry out the appearance of part blade profile size more toward the more overproof illusion of blade tip, reason is
Three coordinate definitions two can be because of respective tenon across the long-pending folded axle Z axis that the Central Symmetry face of rod is part, so each part
Tooth error itself causes the position of the Z axis set up and reality to there is the deviation of certain angle, and this deviation can be with blade height
Increase and amplify.Therefore, when setting up the long-pending folded axle of vane foil using three coordinates, with the roller and blade A3 of tenon tooth both sides
The common Z plane for determining part of point can be more accurate and true.Roller only defines the circumference of part, is defined by blade A3 points
His is angular, and A3 points are drawn by scanning the accurate tangential direction point that calculates behind blade tip section.In actual production prove, this two across
Rod adds the positioning method of a line most reasonably to set up coordinate system, method.Scheme realized after implementing tenon tooth and integral shroud, tenon tooth with
The position relationship of blade, improves the X for being set up benchmark with tenon tooth and A3 after processing and being evaluated, the precision of Y location degree, controls in theory
Within the 0.28 of position.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (9)
1. a kind of processing method of moving turbine blade, it is characterised in that comprise the following steps：
A, unified moving turbine blade blank (14) and moving turbine blade blank (14) mach positioning datum；
The determination of positioning datum is comprised the following steps that in the step a：
It is vented in the blade leading edge and blade of moving turbine blade true respectively at the inside 2mm-5mm of plate edge of side both direction
Determine A1 points and A2 points, and A1 points and A2 points are chosen to increase at the distance between 2 points to end position respectively, with A1 points and A2 points
Determine the X-direction of coordinate；
Y direction and Z-direction are drawn based on X-axis, and according to the processing entity of moving turbine blade blank (14), so that
Set up three-dimensional coordinate system；
B, positioning is fixed to moving turbine blade blank (14), and be processed according to positioning datum；
C, grinding form the tenon tooth of moving turbine blade, are positioned with processing tenon tooth, processing moving turbine blade
The sawtooth of supramarginal plate, inframarginal and integral shroud；
Moving turbine blade after d, processing is heat-treated and shot-peening, forms the moving turbine blade of shaping.
2. the processing method of moving turbine blade according to claim 1, it is characterised in that
The specific procedure of processing of the step c is：
Process two inclined-planes, two inclined-planes of processing blade back inframarginal and processing integral shroud of the leaf basin inframarginal of moving turbine blade
Two sawtooth.
3. the processing method of moving turbine blade according to claim 1, it is characterised in that
The blade tip section of moving turbine blade blank (14) is intercepted in X-axis, takes the convex surface tangent line peak in blade tip section to make
For A3 points；
A3 points are in the centre position of back of the body arc tolerance band, so that the theoretical curve of back of the body arc falls in back of the body arc tolerance band, so as to ensure
Machining accuracy.
4. the processing method of moving turbine blade according to claim 3, it is characterised in that
Chosen respectively in the supramarginal plate centre position and inframarginal centre position of moving turbine blade air inlet edge direction B1 points and
B2 points；
B1 points and B2 are respectively in the listrium mid-depth of present position short transverse.
5. the processing method of moving turbine blade according to claim 4, it is characterised in that
The maximum region selection in edge direction upper periphery space, which is vented, in moving turbine blade inframarginal is a little used as C1 points；
Using C1 points as radial reference, rested against for follow-up machining fixture alignment pin.
6. the processing method of moving turbine blade according to claim 5, it is characterised in that
According to the line of moving turbine blade blank (14) size selection five points one；
Movement and the X/Y plane and turn of YZ planes of moving turbine blade blank (14) Y-axis are limited with A1 points, A2 points and A3 points
It is dynamic；
With the movement of B1 points and B2 points limitation X-axis and the rotation of XZ planes；
The movement of Z axis is limited with C1 points.
7. the processing method of moving turbine blade according to claim 6, it is characterised in that
Moving turbine blade is used as using the line that camber line is carried on the back in A1 points, A2 points, B1 points, B2 points, 5 points of C1 points and blade tip section
Blank (14) and moving turbine blade blank (14) mach positioning datum.
8. the processing method of moving turbine blade according to claim 7, it is characterised in that
When being ground tenon tooth, it is ensured that grind position degree relation of the tenon tooth with respect to blade profile center come in XY coordinate planes ± 0.28mm；
When being ground the sawtooth of integral shroud, it is ensured that the size of sawtooth is with respect to the coordinate system reference position degree ± 0.02mm that tenon tooth is set up；
The sawtooth for being ground tenon tooth and grinding integral shroud is creep feed grinding.
9. the processing method of moving turbine blade according to any one of claim 1 to 8, it is characterised in that
Clamping device when processing tenon tooth includes chuck body (1), for each positioning of fixed turbine working-blade blank (14)
The pressure head (2) of datum mark, the housing screw (3) for clamping moving turbine blade blank (14) and for finely tune each positioning
The governor motion (4) of datum mark；
Clamping device when processing blade includes firm banking (5), and firm banking (5) is provided with the chuck for being used for clamping tenon tooth
(6), to from moving turbine blade blank (14) bottom support moving turbine blade blank (14) support member (7), for from
Moving turbine blade blank (14) laterallys secure the steel band (8) of moving turbine blade blank (14) and with chuck (6) with respect to cloth
Put and be resisted against the backing pin (9) at the integral shroud sawtooth end of moving turbine blade blank (14)；
Clamping device after tenon tooth completion of processing includes fixed platform (10), in fixed platform (10) and for supporting turbine
The support (11) of working-blade blank (14), the teeth groove being held on by roller (12) in the teeth groove of tenon tooth press from both sides (13).
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| CN201510899892.8A CN105312864B (en) | 2015-12-09 | 2015-12-09 | The processing method of moving turbine blade |
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| CN114101822A (en) * | 2021-12-15 | 2022-03-01 | 贵阳航发精密铸造有限公司 | Turbine blade air film hole machining method and machining device |
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Address after: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee after: China Hangfa South Industrial Co. Ltd. Address before: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee before: China Southern Airlines Industry (Group) Co., Ltd. |