CN107560576A - The processing method of turbo blade numerical control electric spark aperture On-machine Test correction - Google Patents
The processing method of turbo blade numerical control electric spark aperture On-machine Test correction Download PDFInfo
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Abstract
A kind of processing method of turbo blade numerical control electric spark aperture On-machine Test correction, electric spark small hole processing machine bed used in the processing method is at least configured with six numerical control axles, wherein four linear axis, two rotary shafts, the linear axis are X-axis, Y-axis, Z axis, W axles, rotary shaft is B axle, C axles, it is characterised in that：（1）It is arranged on seat in the plane and moves gauge head；（2）Choose measurement point；（3）Clamping master body；（4）Obtain the mechanical coordinate value of six measurement points of master body；（5）The workpiece to be added of clamping turbo blade；（6）The measurement and correction of the levelling feature group of workpiece to be added of turbo blade；（7）The measurement and correction of the workpiece hyperspin feature group to be added of turbo blade；（8）The measurement and correction of the Workpiece zero point feature group to be added of turbo blade；（9）Correction in small hole machined.Machining accuracy of the present invention is high, and the position of air film hole and angle precision are high, and high in machining efficiency, On-machine Test can be organically combined with actual processing.
Description
Technical field
On-machine Test the present invention relates to numerical control electric spark aperture machine to processing part, more particularly to aero-engine, vapour
The processing method of the turbo blade numerical control electric spark aperture such as turbine On-machine Test correction.
Background technology
Aero-engine provides the engine of power needed for flight for airborne vehicle.Mainly there are three types：Piston type aviation
Engine, gas-turbine unit, punching engine.Wherein, gas-turbine unit is most widely used, gas turbine hair
Motivation is that the chemical energy of fuel is changed into the thermal machine of shaft work or aircraft propulsion work(.
The blade profile of turbo blade includes concave pressure face and convexity suction surface, and pressure face is also known as leaf basin, suction surface is also known as
For blade back.The different radial sections of blade have the blade profile of different twisting rules.
Turbo blade easily generates heat in the course of the work, and air film cooling technology is as the main of high-temperature unit of aircraft engine
One of type of cooling, played an important role in terms of turbine blade surface temperature and thermal stress is effectively reduced, it is held
Continuous and in-depth study is the important channel of raising aero-engine performance.In the past few decades, the research work on hole shape
Focus primarily upon irregularly-shaped hole and near exit sets the air film hole of turbulence structure, these structures are improving the same of Film Cooling
When, the flow resistance that can not be ignored also is brought, and part irregularly-shaped hole mechanical processing difficulty is big, and realizability is poor.
Aerial motor spare part is mainly using special materials such as high temperature alloy or titanium alloys, and surface is mostly complicated bent
Face, using the processing of traditional process for machining there is the problems such as cost is high, difficulty of processing is big, mainly use electricity fire in the world at present
Flower processing technique is processed.
Blade of aviation engine class workpiece using precision casting process production blank, according to the applicant understood, exists at present at present
During air film hole machined, without correction, the error on spoon of blade surface is larger during essence casting, the profile of some mo(u)lded pieces
Error can reach more than 0.3mm, if be processed air film hole according to drawing standard, aperture and curved surface profile line just occurs
The larger situation of deviation.
The content of the invention
The present invention provides a kind of processing method of turbo blade numerical control electric spark aperture On-machine Test correction, its object is to
Solve the problems, such as that air film hole mismachining tolerance is big on existing turbo blade, to improve the position of air film hole and angle essence on turbo blade
Degree.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：A kind of turbo blade numerical control electric spark aperture is in machine
The processing method for detecting correction, electric spark small hole processing machine bed used in the processing method are at least configured with six numerical controls
Axle, wherein four linear axis, two rotary shafts, the linear axis are X-axis, Y-axis, Z axis, W axles, rotary shaft is B axle, C axles, and it is created
Newly it is：
（1）It is arranged on seat in the plane and moves gauge head
Set one to move gauge head in seat in the plane in advance for electric spark small hole processing machine bed, gauge head should be moved in seat in the plane by measuring staff and located at survey
The displacement transducer of bar end is formed, and moving gauge head in seat in the plane is installed on W axles, is driven and moved up and down by W axles, the displacement sensing
The signal input of the output signal of device and the digital control system of electric spark small hole processing machine bed, machine displacement detecting system is formed in this
System；
（2）Choose measurement point
Six measurement points are chosen according to the shape and size of turbo blade, wherein：
Three measurement points are chosen on the leaf basin of turbo blade, these three measurement points form plane triangle on leaf basin, and this is flat
The normal of face triangle barycenter is defined as levelling normal vector, and these three measurement points form levelling feature group, these three measurement points
Normal of the normal of plane as these three measurement points near present position；
Two measurement points are chosen on the leaf ridge of turbo blade, line of the two measurement points on leaf ridge surface forms one directly
Line segment, the normal at the straightway midpoint are defined as rotating normal vector, the rotation normal vector perpendicular to levelling normal vector,
Its vertical missing is 0 ~ 3 °, the two measurement points composition hyperspin feature group, the method for plane near the two measurement point present positions
Normal of the line as the two measurement points；
A measurement point is chosen on the leaf top of turbo blade, the normal of the measurement point is defined as origin normal vector, this
Measurement point forms origin feature group, and the origin normal vector is both perpendicular to levelling normal vector and rotates normal vector, its
Vertical missing is 0 ~ 3 °, normal of the normal of plane as this measurement point near this measurement point present position；
Levelling normal vector, rotation normal vector and origin normal vector form a measuring coordinate system, the original of the measuring coordinate system
Point is the measurement point of origin feature group；
（3）Clamping master body
Using special fixture by the master body for the turbo blade made in advance according to technological requirement clamping in electric spark small hole
On the workbench of machining tool；
（4）Obtain the mechanical coordinate value of six measurement points of master body
For clamping master body, three measurement points of levelling feature group are measured first, then measure hyperspin feature group
Two measurement points, finally measure a measurement point of origin feature group；
For each measurement point in six measurement points, by rotating B axle and C axles, make the normal parallel of measurement point in X-axis, Y
A linear axis in three linear axis of axle and W axles, and using the linear axis as the shifting axle that gauge head is moved in seat in the plane, pass through movement
Two other linear axis in three X-axis, Y-axis and W axles linear axis, make to move gauge head alignment measurement point in seat in the plane, it is mobile in seat in the plane
The shifting axle of gauge head is moved, makes to move normal direction of the gauge head along measurement point in seat in the plane close to master body, is touched when moving gauge head in seat in the plane
Touch or depart from master body surface moment obtained by mechanical coordinate value of the coordinate value as measurement point, finally, obtain correspondingly
In six mechanical coordinate values of six measurement points of master body, the levelling of master body is respectively obtained by six mechanical coordinate values
Normal vector, rotation normal vector and origin normal vector；
（5）The workpiece to be added of clamping turbo blade
Using special fixture by the workpiece to be added of turbo blade according to technological requirement clamping electric spark small hole processing machine bed work
Make on platform；
（6）The measurement and correction of the levelling feature group of workpiece to be added of turbo blade
For the workpiece to be added of clamping turbo blade, is first according to（4）The measuring method of each measurement point is surveyed in point
Three measurement points of levelling feature group are measured, obtain the machinery of levelling three measurement points of feature group of workpiece to be added of corresponding turbo blade
Coordinate value, the levelling normal vector of workpiece to be added is worth to by the mechanical coordinate of three measurement points；Then, by workpiece to be added
Levelling normal vector draws the error amount of B axle and C axles compared with the levelling normal vector of master body；Then, B is rotated
Axle and C axles, the levelling normal vector direction of workpiece to be added and the levelling normal vector direction of master body is parallel, rectified a deviation
The levelling normal vector of workpiece to be added afterwards, by the levelling method of the levelling normal vector and master body of the workpiece to be added after correction
Line vector compares, and draws the error amount of X-axis, Y-axis and W axles；
（7）The measurement and correction of the workpiece hyperspin feature group to be added of turbo blade
For the workpiece to be added of clamping turbo blade, is first according to（4）The measuring method of each measurement point is surveyed in point
Two measurement points of hyperspin feature group are measured, obtain the machinery of two measurement points of workpiece hyperspin feature group to be added of corresponding turbo blade
Coordinate value, the rotation normal vector of workpiece to be added is worth to by the mechanical coordinate of two measurement points；Then, by workpiece to be added
Normal vector is rotated compared with the rotation normal vector of master body, draws the error amount of B axle and C axles；Then, B is rotated
Axle and C axles, the rotation normal vector direction workpiece to be added is parallel with the rotation normal vector direction of master body, is rectified a deviation
The rotation normal vector of workpiece to be added afterwards, by the rotation normal vector of the workpiece to be added after correction and the rotary process of master body
Line vector compares, and draws the error amount of X-axis, Y-axis and W axles；
（8）The measurement and correction of the Workpiece zero point feature group to be added of turbo blade
For the workpiece to be added of clamping turbo blade, by（6）X-axis that the levelling feature group of point is drawn, Y-axis, W axles, B axle and
The error amount of C axles and（7）The error amount superposition for X-axis, Y-axis, W axles, B axle and the C axles that point hyperspin feature group is drawn, and it is folded with this
The numerical value added is amount of movement, and the position of the measurement point of origin feature group is determined by mobile X-axis, Y-axis, W axles, B axle and C axles；
According to（4）A measurement point of the measuring method measurement origin feature group of each measurement point, obtains corresponding whirlpool in point
The mechanical coordinate value of the Workpiece zero point feature group measurement point to be added of impeller blade, the origin of the mechanical coordinate value and master body is special
The mechanical coordinate value of sign group measurement point is compared to obtain the error amount of X-axis, Y-axis, W axles, B axle and C axles；
（9）Correction in small hole machined
By（8）The error amount of the X-axis, Y-axis, W axles, B axle and the C axles that are drawn in point is as the X-axis of workpiece to be added, Y-axis, W axles, B
The correction amount of axle and C axles, it is superimposed one by one with the need processing hole position position woven with this correction amount, obtains processing the reality of hole position
Border position, work in-process, it is moved to the physical location and is processed, is carried out with realizing in each small hole machined of workpiece to be added
Correction.
Relevant content in above-mentioned technical proposal is explained as follows：
In such scheme,（4）In point, the coordinate value obtained by the moment on gauge head touching master body surface is moved in seat in the plane
Mechanical coordinate value as measurement point.
In such scheme,（4）In point, depart from after gauge head touching is moved in seat in the plane obtained by the moment on master body surface
Mechanical coordinate value of the coordinate value arrived as measurement point.
In such scheme, it is preferred that the vertical missing, which is 0 ~ 1.5 °,.
In such scheme, the mechanical coordinate value refers to the mechanical coordinate value of electric spark small hole processing machine bed.
In such scheme, X-axis, Y-axis are horizontal, and W axles are processing axle perpendicular to X/Y plane, Z axis, be placed on W axles and parallel to
W axles, Z axis motion is driven by W axles, B axle is around Y-axis, and C axles are about the z axis or W axles.
Operation principle of the present invention is：The present invention by be arranged on seat in the plane move gauge head, choose measurement point, clamping master body,
Obtain master body six measurement points mechanical coordinate value, the workpiece to be added of clamping turbo blade, turbo blade it is to be processed
The measurement and correction of the levelling feature group of part, the measurement and correction of the workpiece hyperspin feature group to be added of turbo blade, turbo blade
The measurement and correction of Workpiece zero point feature group to be added, to realize the correction in small hole machined.
Because above-mentioned technical proposal is used, the present invention has following advantages and effect compared with prior art：
1st, the present invention is by iteration error, and machining accuracy is high, and the position of air film hole and angle precision are high.
2nd, the present invention be in machine-tooled method, it is high in machining efficiency, to the error between clamping error and workpiece（Manufacture misses
Difference）Strong adaptability.
3rd, the present invention is by iteration error, and cognitive science is reasonable, and technical concept is ingenious so that On-machine Test and actual processing
It can be organically combined.
Brief description of the drawings
Accompanying drawing 1 be turbine blade arrangement of the embodiment of the present invention and each measurement point, levelling normal vector, rotation normal vector and
Origin normal vector schematic diagram；
Accompanying drawing 2 is each reference axis schematic diagram of the embodiment of the present invention；
Accompanying drawing 3 is flow chart of the present invention.
In the figures above, 1, leaf basin；2nd, leaf ridge；3rd, Ye Ding；A, measurement point；B, measurement point；C, measurement point；D, measurement point；
E, measurement point；F, measurement point；O1, barycenter；M1n1, levelling normal vector；O2, midpoint；M2n2, rotation normal vector；M3n3, original
Point normal vector.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described：
Embodiment：
Referring to the processing method that shown in Fig. 1 ~ Fig. 3, a kind of turbo blade numerical control electric spark aperture On-machine Test is rectified a deviation, the processing
Electric spark small hole processing machine bed used in method is at least configured with six numerical control axles, wherein four linear axis, two rotary shafts,
The linear axis are X-axis, Y-axis, Z axis, W axles, and rotary shaft is B axle, C axles.
（1）It is arranged on seat in the plane and moves gauge head
Set one to move gauge head in seat in the plane in advance for electric spark small hole processing machine bed, gauge head should be moved in seat in the plane by measuring staff and located at survey
The displacement transducer of bar end is formed, and moving gauge head in seat in the plane is installed on W axles, is driven and moved up and down by W axles, the displacement sensing
The signal input of the output signal of device and the digital control system of electric spark small hole processing machine bed, machine displacement detecting system is formed in this
System.
（2）Choose measurement point
Six measurement points are chosen according to the shape and size of turbo blade, wherein：
Three measurement points, respectively measurement point A, measurement point B and measurement point C, these three surveys are chosen on the leaf basin of turbo blade
Amount point forms plane triangle on leaf basin 1, and plane triangle barycenter O1 normal is defined as levelling normal vector m1n1, surveys
Plane near amount point A, measurement point B and the levelling feature group of measurement point C compositions, measurement point A, measurement point B and measurement point C present positions
Normal of the normal as these three measurement points.
Two measurement points, respectively measurement point D and measurement point E, measurement point D and survey are chosen on the leaf ridge 2 of turbo blade
Measure lines of the point E on the surface of leaf ridge 2 and form straight line section, straightway midpoint O2 normal is defined as rotating normal vector
Perpendicular to levelling normal vector m1n1, its vertical missing is 0 ~ 3 ° by m2n2, the rotation normal vector m2n2, this measurement point D and
The normal of plane is as measurement point D and measurement near measurement point E composition hyperspin feature groups, measurement point D and measurement point E present positions
Point E normal.
A measurement point F is chosen on the leaf top 3 of turbo blade, measurement point F normal is defined as origin normal vector,
This measurement point forms origin feature group, and the origin normal vector m3n3 is both perpendicular to levelling normal vector m1n1 and rotation
Robin line vector m2n2, its vertical missing are 0 ~ 3 °, method of the normal of plane as measurement point F near measurement point F present positions
Line.
Levelling normal vector m1n1, rotation normal vector m2n2 and origin normal vector m3n3 form a measuring coordinate system,
The origin of the measuring coordinate system is the measurement point F of origin feature group.
（3）Clamping master body
Using special fixture by the master body for the turbo blade made in advance according to technological requirement clamping in electric spark small hole
On the workbench of machining tool.
（4）Obtain the mechanical coordinate value of six measurement points of master body
For clamping master body, three measurement points of levelling feature group, i.e. measurement point A, measurement point B and survey are measured first
Point C is measured, then measures two measurement points of hyperspin feature group, i.e. measurement point D and measurement point E, finally measures origin feature group
One measurement point F.
For each measurement point in six measurement points, by rotating B axle and C axles, make the normal parallel of measurement point in X
A linear axis in three axle, Y-axis and W axles linear axis, and using the linear axis as the shifting axle that gauge head is moved in seat in the plane, pass through
Two other linear axis in three mobile X-axis, Y-axis and W axles linear axis, make to move gauge head alignment measurement point in seat in the plane, movement exists
The shifting axle of gauge head is moved in seat in the plane, makes to move normal direction of the gauge head along measurement point in seat in the plane close to master body, is surveyed when being moved in seat in the plane
Head touching or mechanical coordinate value of the coordinate value as measurement point obtained by the moment for departing from master body surface, finally, are obtained
Corresponding to six mechanical coordinate values of six measurement points of master body, master body is respectively obtained by six mechanical coordinate values
Levelling normal vector m1n1, rotation normal vector m2n2 and origin normal vector m3n3.
（5）The workpiece to be added of clamping turbo blade
Using special fixture by the workpiece to be added of turbo blade according to technological requirement clamping electric spark small hole processing machine bed work
Make on platform.
（6）The measurement and correction of the levelling feature group of workpiece to be added of turbo blade
For the workpiece to be added of clamping turbo blade, is first according to（4）The measuring method of each measurement point is surveyed in point
Three measurement points of levelling feature group are measured, obtain workpiece to be added three measurement points of levelling feature group of corresponding turbo blade（Measurement
Point A, measurement point B and measurement point C）Mechanical coordinate value, pass through three measurement points（Measurement point A, measurement point B and measurement point C）'s
Mechanical coordinate is worth to the levelling normal vector m1n1 of workpiece to be added；Then, by the levelling normal vector m1n1 of workpiece to be added with
The levelling normal vector m1n1 of master body is compared, and draws the error amount of B axle and C axles；Then, B axle and C axles are rotated,
The levelling normal vector m1n1 directions of workpiece to be added are parallel with the levelling normal vector m1n1 directions of master body, after obtaining correction
Workpiece to be added levelling normal vector m1n1, by levelling the normal vector m1n1 and master body of the workpiece to be added after correction
Levelling normal vector m1n1 compares, and draws the error amount of X-axis, Y-axis and W axles.
（7）The measurement and correction of the workpiece hyperspin feature group to be added of turbo blade
For the workpiece to be added of clamping turbo blade, is first according to（4）The measuring method of each measurement point is surveyed in point
Measure two measurement points of hyperspin feature group（Measurement point D and measurement point E）, obtain the workpiece hyperspin feature to be added for corresponding to turbo blade
Two measurement points of group（Measurement point D and measurement point E）Mechanical coordinate value, pass through two measurement points（Measurement point D and measurement point E）'s
Mechanical coordinate is worth to the rotation normal vector m2n2 of workpiece to be added；Then, by the rotation normal vector m2n2 of workpiece to be added with
The rotation normal vector m2n2 of master body is compared, and draws the error amount of B axle and C axles；Then, B axle and C axles are rotated,
The rotation normal vector m2n2 directions of workpiece to be added are parallel with the rotation normal vector m2n2 directions of master body, after obtaining correction
Workpiece to be added rotation normal vector m2n2, by the rotation normal vector m2n2 of the workpiece to be added after correction and master body
Rotation normal vector m2n2 compares, and draws the error amount of X-axis, Y-axis and W axles.
（8）The measurement and correction of the Workpiece zero point feature group to be added of turbo blade
For the workpiece to be added of clamping turbo blade, by（6）X-axis that the levelling feature group of point is drawn, Y-axis, W axles, B axle and
The error amount of C axles and（7）The error amount superposition for X-axis, Y-axis, W axles, B axle and the C axles that point hyperspin feature group is drawn, and it is folded with this
The numerical value added is amount of movement, and the position of the measurement point of origin feature group is determined by mobile X-axis, Y-axis, W axles, B axle and C axles.
According to（4）The measurement point F of the measuring method measurement origin feature group of each measurement point, obtains corresponding whirlpool in point
The Workpiece zero point feature group measurement point F to be added of impeller blade mechanical coordinate value, by the mechanical coordinate value and the origin of master body
Feature group measurement point F mechanical coordinate value is compared to obtain the error amount of X-axis, Y-axis, W axles, B axle and C axles.
（9）Correction in small hole machined
By（8）The error amount of the X-axis, Y-axis, W axles, B axle and the C axles that are drawn in point is as the X-axis of workpiece to be added, Y-axis, W axles, B
The correction amount of axle and C axles, it is superimposed one by one with the need processing hole position position woven with this correction amount, obtains processing the reality of hole position
Border position, work in-process, it is moved to the physical location and is processed, is carried out with realizing in each small hole machined of workpiece to be added
Correction.
（4）In point, the coordinate value obtained by the moment on gauge head touching master body surface is moved in seat in the plane is as survey
Measure the mechanical coordinate value of point；Or coordinate after gauge head touching is moved in seat in the plane obtained by the moment on disengaging master body surface
It is worth the mechanical coordinate value as measurement point.
It is preferred that the vertical missing, which is 0 ~ 1.5 °,.
The mechanical coordinate value refers to the mechanical coordinate value of electric spark small hole processing machine bed.
X-axis, Y-axis are horizontal, and W axles are processing axle perpendicular to X/Y plane, Z axis, are placed on W axles and parallel to W axles, by W axle bands
Dynamic Z axis motion, B axle is around Y-axis, and C axles are about the z axis or W axles.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent change or modification that Spirit Essence is made, it should all be included within the scope of the present invention.
Claims (4)
1. a kind of processing method of turbo blade numerical control electric spark aperture On-machine Test correction, electricity used in the processing method
Spark small hole processor bed is at least configured with six numerical control axles, wherein four linear axis, two rotary shafts, the linear axis are X
Axle, Y-axis, Z axis, W axles, rotary shaft are B axle, C axles, it is characterised in that：
（1）It is arranged on seat in the plane and moves gauge head
Set one to move gauge head in seat in the plane in advance for electric spark small hole processing machine bed, gauge head should be moved in seat in the plane by measuring staff and located at survey
The displacement transducer of bar end is formed, and moving gauge head in seat in the plane is installed on W axles, is driven and moved up and down by W axles, the displacement sensing
The signal input of the output signal of device and the digital control system of electric spark small hole processing machine bed, machine displacement detecting system is formed in this
System；
（2）Choose measurement point
Six measurement points are chosen according to the shape and size of turbo blade, wherein：
Three measurement points are chosen on the leaf basin of turbo blade, these three measurement points form plane triangle on leaf basin, and this is flat
The normal of face triangle barycenter is defined as levelling normal vector, and these three measurement points form levelling feature group, these three measurement points
Normal of the normal of plane as these three measurement points near present position；
Two measurement points are chosen on the leaf ridge of turbo blade, line of the two measurement points on leaf ridge surface forms one directly
Line segment, the normal at the straightway midpoint are defined as rotating normal vector, the rotation normal vector perpendicular to levelling normal vector,
Its vertical missing is 0 ~ 3 °, the two measurement points composition hyperspin feature group, the method for plane near the two measurement point present positions
Normal of the line as the two measurement points；
A measurement point is chosen on the leaf top of turbo blade, the normal of the measurement point is defined as origin normal vector, this
Measurement point forms origin feature group, and the origin normal vector is both perpendicular to levelling normal vector and rotates normal vector, its
Vertical missing is 0 ~ 3 °, normal of the normal of plane as this measurement point near this measurement point present position；
Levelling normal vector, rotation normal vector and origin normal vector form a measuring coordinate system, the original of the measuring coordinate system
Point is the measurement point of origin feature group；
（3）Clamping master body
Using special fixture by the master body for the turbo blade made in advance according to technological requirement clamping in electric spark small hole
On the workbench of machining tool；
（4）Obtain the mechanical coordinate value of six measurement points of master body
For clamping master body, three measurement points of levelling feature group are measured first, then measure hyperspin feature group
Two measurement points, finally measure a measurement point of origin feature group；
For each measurement point in six measurement points, by rotating B axle and C axles, make the normal parallel of measurement point in X-axis, Y
A linear axis in three linear axis of axle and W axles, and using the linear axis as the shifting axle that gauge head is moved in seat in the plane, pass through movement
Two other linear axis in three X-axis, Y-axis and W axles linear axis, make to move gauge head alignment measurement point in seat in the plane, it is mobile in seat in the plane
The shifting axle of gauge head is moved, makes to move normal direction of the gauge head along measurement point in seat in the plane close to master body, is touched when moving gauge head in seat in the plane
Touch or depart from master body surface moment obtained by mechanical coordinate value of the coordinate value as measurement point, finally, obtain correspondingly
In six mechanical coordinate values of six measurement points of master body, the levelling of master body is respectively obtained by six mechanical coordinate values
Normal vector, rotation normal vector and origin normal vector；
（5）The workpiece to be added of clamping turbo blade
Using special fixture by the workpiece to be added of turbo blade according to technological requirement clamping electric spark small hole processing machine bed work
Make on platform；
（6）The measurement and correction of the levelling feature group of workpiece to be added of turbo blade
For the workpiece to be added of clamping turbo blade, is first according to（4）The measuring method of each measurement point is surveyed in point
Three measurement points of levelling feature group are measured, obtain the machinery of levelling three measurement points of feature group of workpiece to be added of corresponding turbo blade
Coordinate value, the levelling normal vector of workpiece to be added is worth to by the mechanical coordinate of three measurement points；Then, by workpiece to be added
Levelling normal vector draws the error amount of B axle and C axles compared with the levelling normal vector of master body；Then, B is rotated
Axle and C axles, the levelling normal vector direction of workpiece to be added and the levelling normal vector direction of master body is parallel, rectified a deviation
The levelling normal vector of workpiece to be added afterwards, by the levelling method of the levelling normal vector and master body of the workpiece to be added after correction
Line vector compares, and draws the error amount of X-axis, Y-axis and W axles；
（7）The measurement and correction of the workpiece hyperspin feature group to be added of turbo blade
For the workpiece to be added of clamping turbo blade, is first according to（4）The measuring method of each measurement point is surveyed in point
Two measurement points of hyperspin feature group are measured, obtain the machinery of two measurement points of workpiece hyperspin feature group to be added of corresponding turbo blade
Coordinate value, the rotation normal vector of workpiece to be added is worth to by the mechanical coordinate of two measurement points；Then, by workpiece to be added
Normal vector is rotated compared with the rotation normal vector of master body, draws the error amount of B axle and C axles；Then, B is rotated
Axle and C axles, the rotation normal vector direction workpiece to be added is parallel with the rotation normal vector direction of master body, is rectified a deviation
The rotation normal vector of workpiece to be added afterwards, by the rotation normal vector of the workpiece to be added after correction and the rotary process of master body
Line vector compares, and draws the error amount of X-axis, Y-axis and W axles；
（8）The measurement and correction of the Workpiece zero point feature group to be added of turbo blade
For the workpiece to be added of clamping turbo blade, by（6）X-axis that the levelling feature group of point is drawn, Y-axis, W axles, B axle and
The error amount of C axles and（7）The error amount superposition for X-axis, Y-axis, W axles, B axle and the C axles that point hyperspin feature group is drawn, and it is folded with this
The numerical value added is amount of movement, and the position of the measurement point of origin feature group is determined by mobile X-axis, Y-axis, W axles, B axle and C axles；
According to（4）A measurement point of the measuring method measurement origin feature group of each measurement point, obtains corresponding whirlpool in point
The mechanical coordinate value of the Workpiece zero point feature group measurement point to be added of impeller blade, the origin of the mechanical coordinate value and master body is special
The mechanical coordinate value of sign group measurement point is compared to obtain the error amount of X-axis, Y-axis, W axles, B axle and C axles；
（9）Correction in small hole machined
By（8）The error amount of the X-axis, Y-axis, W axles, B axle and the C axles that are drawn in point is as the X-axis of workpiece to be added, Y-axis, W axles, B
The correction amount of axle and C axles, it is superimposed one by one with the need processing hole position position woven with this correction amount, obtains processing the reality of hole position
Border position, work in-process, it is moved to the physical location and is processed, is carried out with realizing in each small hole machined of workpiece to be added
Correction.
2. the processing method of turbo blade numerical control electric spark aperture On-machine Test correction according to claim 1, its feature
It is：（4）In point, the coordinate value obtained by the moment on gauge head touching master body surface is moved in seat in the plane is as measurement point
Mechanical coordinate value.
3. the processing method of turbo blade numerical control electric spark aperture On-machine Test correction according to claim 1, its feature
It is：（4）In point, coordinate value conduct after gauge head touching is moved in seat in the plane obtained by the moment on disengaging master body surface
The mechanical coordinate value of measurement point.
4. the processing method of turbo blade numerical control electric spark aperture On-machine Test correction according to claim 1, its feature
It is：The vertical missing is 0 ~ 1.5 °.
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