CN107560576B - 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 axis, wherein four linear axis, two rotary shafts, the linear axis is X-axis, Y-axis, Z axis, W axis, rotary shaft is B axle, C axis, it is characterised in that: (1) setting moves gauge head in seat in the plane；(2) measurement point is chosen；(3) clamping master body；(4) the mechanical coordinate value of six measurement points of master body is obtained；(5) workpiece to be added of clamping turbo blade；(6) measurement and correction of the levelling feature group of the workpiece to be added of turbo blade；(7) measurement and correction of the workpiece hyperspin feature group to be added of turbo blade；(8) 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 and actual processing are able to carry out combination.
Description
Technical field
The present invention relates to numerical control electric spark aperture machines to the On-machine Test of processing part, in particular to aero-engine, vapour
The processing method of the turbo blades numerical control electric spark aperture On-machine Test such as turbine correction.
Background technique
Aero-engine provides the engine for the required power that flies for aircraft.There are mainly three types of types: piston type aviation
Engine, gas-turbine unit, punching engine.Wherein, gas-turbine unit is most widely used, gas turbine hair
Motivation is the thermal machine that the chemical energy of fuel is changed into shaft work or aircraft propulsion function.
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 is easy fever during the work time, and air film cooling technology is as the main of high-temperature unit of aircraft engine
One of type of cooling is played an important role in terms of turbine blade surface temperature and thermal stress is effectively reduced, is held to it
Continuous and in-depth study is the important channel of raising aero-engine performance.Research work in the past few decades, about hole shape
The air film hole of irregularly-shaped hole and near exit setting turbulence structure is focused primarily upon, these structures are improving the same of Film Cooling
When, it also brings and cannot be neglected flow resistance, and part irregularly-shaped hole mechanical processing difficulty is big, it can be achieved that property is poor.
Aerial motor spare part mainly uses the special materials such as high temperature alloy or titanium alloy, and surface is mostly complicated bent
Face, using the processing of traditional process for machining, there is the problems such as at high cost, difficulty of processing is big, mainly use electrical fire in the world at present
Flower processing technique is processed.
Blade of aviation engine class workpiece uses precision casting process production blank to exist at present according to the applicant understood at present
When air film hole machined, without correction, the error on spoon of blade surface is larger during essence casting, the shape of some mo(u)lded pieces
Error can reach 0.3mm or more, if carry out processing air film hole according to drawing standard, just will appear aperture and curved surface profile line
The larger situation of deviation.
Summary 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.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: a kind of turbo blade numerical control electric spark aperture is in machine
The processing method rectified a deviation is detected, electric spark small hole processing machine bed used in the processing method is at least configured with six numerical controls
Axis, wherein four linear axis, two rotary shafts, the linear axis are X-axis, Y-axis, Z axis, W axis, rotary shaft is B axle, C axis, wound
Newly it is:
(1) setting moves gauge head in seat in the plane
One is arranged in advance for electric spark small hole processing machine bed and moves gauge head in seat in the plane, gauge head should be moved by measuring staff in seat in the plane and set
Displacement sensor in measuring staff end is constituted, and is moved gauge head in seat in the plane and is installed on W axis, is driven and moved up and down by W axis, the displacement
The output signal of sensor is transmitted to the signal input of the digital control system of electric spark small hole processing machine bed, is formed in seat in the plane with this
Move detection system；
(2) measurement point is chosen
Six measurement points are chosen according to the shape and size of turbo blade, in which:
Three measurement points are chosen on the leaf basin of turbo blade, these three measurement points constitute plane triangle on leaf basin,
The normal of the plane triangle mass center is defined as levelling normal vector, these three measurement points constitute levelling feature group, these three surveys
Normal of the normal of plane as these three measurement points near amount point present position；
Two measurement points are chosen on the leaf ridge of turbo blade, line of the two measurement points on leaf ridge surface constitutes one
Straightway, the normal at the straightway midpoint are defined as rotation normal vector, and the rotation normal vector is perpendicular to levelling normal
Vector, vertical missing are 0 ~ 3 °, the two measurement points constitute hyperspin feature group, plane near the two measurement point present positions
Normal of the normal 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
One measurement point constitutes origin feature group, and the origin normal vector is both perpendicular to levelling normal vector and rotation normal arrow
Amount, vertical missing are 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 constitute a measurement coordinate system, the measurement coordinate system
Origin be origin feature group measurement point；
(3) clamping master body
Require clamping in electric spark according to technique the master body for the turbo blade made in advance using special fixture
On the workbench of small hole processor bed；
(4) the mechanical coordinate value of six measurement points of master body is obtained
For clamping master body, three measurement points of levelling feature group are measured first, then measure hyperspin feature
Two measurement points of group finally measure a measurement point of origin feature group；
Make the normal parallel of measurement point in X by rotation B axle and C axis for each of six measurement points measurement point
A linear axis in three axis, Y-axis and W axis linear axis, and using the linear axis as the shifting axle for moving gauge head in seat in the plane, pass through
Other two linear axis in three mobile X-axis, Y-axis and W axis linear axis makes to move gauge head alignment measurement point in seat in the plane, and movement exists
The shifting axle of gauge head is moved in seat in the plane, make seat in the plane move gauge head along measurement point normal direction close to master body, surveyed when being moved in seat in the plane
Head touching or the moment obtained coordinate value for being detached from master body surface are finally obtained as the mechanical coordinate value of measurement point
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, rotation normal vector and origin normal vector；
(5) workpiece to be added of clamping turbo blade
Require clamping in electric spark small hole processing machine bed according to technique the workpiece to be added of turbo blade using special fixture
Workbench on；
(6) measurement and correction of the levelling feature group of the workpiece to be added of turbo blade
For the workpiece to be added of clamping turbo blade, first, in accordance with the measurement side of each measurement point in (4) point
Method measures three measurement points of levelling feature group, obtains workpiece to be added three measurement points of levelling feature group of corresponding turbo blade
Mechanical coordinate value obtains the levelling normal vector of workpiece to be added by the mechanical coordinate value of three measurement points；It then, will be to be processed
The levelling normal vector of part is compared with the levelling normal vector of master body, obtains the error amount of B axle and C axis；Then, it revolves
Turn B axle and C axis, the levelling normal vector direction of workpiece to be added and the levelling normal vector direction of master body is parallel, it obtains
The levelling normal vector of workpiece to be added after correction, by after correction the levelling normal vector of workpiece to be added and looking for for master body
Flat normal vector compares, and obtains the error amount of X-axis, Y-axis and W axis；
(7) 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, first, in accordance with the measurement side of each measurement point in (4) point
Method measures two measurement points of hyperspin feature group, obtains two measurement points of workpiece hyperspin feature group to be added of corresponding turbo blade
Mechanical coordinate value obtains the rotation normal vector of workpiece to be added by the mechanical coordinate value of two measurement points；It then, will be to be processed
The rotation normal vector of part is compared with the rotation normal vector of master body, obtains the error amount of B axle and C axis；Then, it revolves
Turn B axle and C axis, the rotation normal vector direction workpiece to be added is parallel with the rotation normal vector direction of master body, obtains
The rotation normal vector of workpiece to be added after correction, by the rotation of the rotation normal vector and master body of the workpiece to be added after correction
Robin line vector compares, and obtains the error amount of X-axis, Y-axis and W axis；
(8) 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, (6) are put into X-axis, the Y-axis, W axis, B that levelling feature group obtains
The error amount of axis and C axis is superimposed with the error amount of X-axis, Y-axis, W axis, B axle and C axis that (7) point hyperspin feature group obtains, and with
The numerical value of the superposition is amount of movement, and the position of the measurement point of origin feature group is determined by mobile X-axis, Y-axis, W axis, B axle and C axis
It sets；
According to a measurement point of the measurement method measurement origin feature group of each measurement point in (4) point, acquisition pair
The mechanical coordinate value for answering the Workpiece zero point feature group measurement point to be added of turbo blade, by the original of the mechanical coordinate value and master body
The mechanical coordinate value of point feature group measurement point is compared to obtain the error amount of X-axis, Y-axis, W axis, B axle and C axis；
(9) correction in small hole machined
Using the error amount of the X-axis, Y-axis, W axis, B axle and the C axis that are obtained in (8) point as the X-axis of workpiece to be added, Y-axis, W
The correction amount of axis, B axle and C axis is superimposed one by one with the need processing hole location position woven with this correction amount, obtains that hole location need to be processed
Physical location, work in-process is moved to the physical location and processed, to realize in each small hole machined of workpiece to be added
It rectifies a deviation.
Related content in above-mentioned technical proposal is explained as follows:
In above scheme, in (4) point, when the moment obtained seat for moving gauge head touching master body surface in seat in the plane
Mechanical coordinate value of the scale value as measurement point.
In above scheme, in (4) point, it is detached from obtained by the moment on master body surface after moving gauge head touching in seat in the plane
Mechanical coordinate value of the coordinate value arrived as measurement point.
In above scheme, it is preferred that the vertical missing, which is 0 ~ 1.5 °,.
In above scheme, the mechanical coordinate value refers to the mechanical coordinate value of electric spark small hole processing machine bed.
In above scheme, X-axis, Y-axis are horizontal, and for W axis perpendicular to X/Y plane, Z axis is processing axis, are placed on W axis and are parallel to
W axis drives Z axis movement by W axis, and B axle is around Y-axis, and C axis is about the z axis or W axis.
Working principle of the present invention is: the present invention, which passes through, to be arranged in seat in the plane shifting gauge head, selection 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.
Since above-mentioned technical proposal is used, the present invention has following advantages and effect compared with prior art:
1, for the present invention by iteration error, machining accuracy is high, and the position of air film hole and angle precision are high.
2, the present invention is, in machine-tooled method, high in machining efficiency, (manufacture misses to the error between clamping error and workpiece
Difference) it is adaptable.
3, 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 is able to carry out combination.
Detailed description of the invention
Attached 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；
Attached drawing 2 is each reference axis schematic diagram of the embodiment of the present invention；
Attached drawing 3 is flow chart of the present invention.
In the figures above, 1, leaf basin；2, leaf ridge；3, Ye Ding；A, measurement point；B, measurement point；C, measurement point；D, measurement point；
E, measurement point；F, measurement point；O1, mass center；M1n1, levelling normal vector；O2, midpoint；M2n2, rotation normal vector；M3n3, original
Point normal vector.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments:
Embodiment:
Referring to shown in Fig. 1 ~ Fig. 3, a kind of processing method of turbo blade numerical control electric spark aperture On-machine Test correction is described
Electric spark small hole processing machine bed used in processing method is at least configured with six numerical control axis, wherein four linear axis, two rotations
Shaft, the linear axis are X-axis, Y-axis, Z axis, W axis, and rotary shaft is B axle, C axis.
(1) setting moves gauge head in seat in the plane
One is arranged in advance for electric spark small hole processing machine bed and moves gauge head in seat in the plane, gauge head should be moved by measuring staff in seat in the plane and set
Displacement sensor in measuring staff end is constituted, and is moved gauge head in seat in the plane and is installed on W axis, is driven and moved up and down by W axis, the displacement
The output signal of sensor is transmitted to the signal input of the digital control system of electric spark small hole processing machine bed, is formed in seat in the plane with this
Move detection system.
(2) measurement point is chosen
Six measurement points are chosen according to the shape and size of turbo blade, in which:
Three measurement points are chosen on the leaf basin of turbo blade, respectively measurement point A, measurement point B and measurement point C, this three
A measurement point constitutes plane triangle on leaf basin 1, and the normal of plane triangle mass center O1 is defined as levelling normal vector
M1n1, measurement point A, measurement point B and measurement point C constitute levelling feature group, measurement point A, measurement point B and the present position measurement point C
Normal of the normal of neighbouring plane 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
It measures line of the point E on 2 surface of leaf ridge and constitutes straight line section, the normal of straightway midpoint O2 is defined as rotation normal vector
Perpendicular to levelling normal vector m1n1, 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 group, measurement point D and the present position measurement point E
The normal of point E.
A measurement point F is chosen on the leaf top 3 of turbo blade, the normal of measurement point F is defined as origin normal vector,
This measurement point constitutes origin feature group, and the origin normal vector m3n3 is both perpendicular to levelling normal vector m1n1 and rotation
Robin line vector m2n2, vertical missing are 0 ~ 3 °, method of the normal of plane as measurement point F near the present position measurement point F
Line.
Levelling normal vector m1n1, rotation normal vector m2n2 and origin normal vector m3n3 constitute a measurement coordinate system,
The origin of the measurement coordinate system is the measurement point F of origin feature group.
(3) clamping master body
Require clamping in electric spark according to technique the master body for the turbo blade made in advance using special fixture
On the workbench of small hole processor bed.
(4) the mechanical coordinate value of six measurement points of master body is obtained
For clamping master body, three measurement points of levelling feature group, i.e. measurement point A, measurement point B are measured first
And measurement point C, two measurement points of hyperspin feature group, i.e. measurement point D and measurement point E are then measured, origin feature is finally measured
One measurement point F of group.
Make the normal parallel of measurement point in X by rotation B axle and C axis for each of six measurement points measurement point
A linear axis in three axis, Y-axis and W axis linear axis, and using the linear axis as the shifting axle for moving gauge head in seat in the plane, pass through
Other two linear axis in three mobile X-axis, Y-axis and W axis linear axis makes to move gauge head alignment measurement point in seat in the plane, and movement exists
The shifting axle of gauge head is moved in seat in the plane, make seat in the plane move gauge head along measurement point normal direction close to master body, surveyed when being moved in seat in the plane
Head touching or the moment obtained coordinate value for being detached from master body surface are finally obtained as the mechanical coordinate value of measurement point
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) workpiece to be added of clamping turbo blade
Require clamping in electric spark small hole processing machine bed according to technique the workpiece to be added of turbo blade using special fixture
Workbench on.
(6) measurement and correction of the levelling feature group of the workpiece to be added of turbo blade
For the workpiece to be added of clamping turbo blade, first, in accordance with the measurement side of each measurement point in (4) point
Method measures three measurement points of levelling feature group, obtains workpiece to be added three measurement points of levelling feature group of corresponding turbo blade
The mechanical coordinate value of (measurement point A, measurement point B and measurement point C) passes through three measurement points (measurement point A, measurement point B and measurement point
C mechanical coordinate value) obtains the levelling normal vector m1n1 of workpiece to be added；Then, by the levelling normal vector of workpiece to be added
M1n1 is compared with the levelling normal vector m1n1 of master body, obtains the error amount of B axle and C axis；Then, B axle and C are rotated
Axis, the direction levelling normal vector m1n1 of workpiece to be added and the direction levelling normal vector m1n1 of master body is parallel, it obtains
The levelling normal vector m1n1 of workpiece to be added after correction, by the levelling normal vector m1n1 and standard of the workpiece to be added after correction
The levelling normal vector m1n1 of exemplar compares, and obtains the error amount of X-axis, Y-axis and W axis.
(7) 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, first, in accordance with the measurement side of each measurement point in (4) point
Method measures two measurement points (measurement point D and measurement point E) of hyperspin feature group, obtains the workpiece rotation to be added of corresponding turbo blade
The mechanical coordinate value of two measurement points of feature group (measurement point D and measurement point E) passes through two measurement points (measurement point D and measurement points
E mechanical coordinate value) obtains the rotation normal vector m2n2 of workpiece to be added；Then, by the rotation normal vector of workpiece to be added
M2n2 is compared with the rotation normal vector m2n2 of master body, obtains the error amount of B axle and C axis；Then, B axle and C are rotated
Axis, the rotation direction normal vector m2n2 workpiece to be added is parallel with the rotation direction normal vector m2n2 of master body, obtains
The rotation normal vector m2n2 of workpiece to be added after correction, by the rotation normal vector m2n2 and standard of the workpiece to be added after correction
The rotation normal vector m2n2 of exemplar compares, and obtains the error amount of X-axis, Y-axis and W axis.
(8) 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, (6) are put into X-axis, the Y-axis, W axis, B that levelling feature group obtains
The error amount of axis and C axis is superimposed with the error amount of X-axis, Y-axis, W axis, B axle and C axis that (7) point hyperspin feature group obtains, and with
The numerical value of the superposition is amount of movement, and the position of the measurement point of origin feature group is determined by mobile X-axis, Y-axis, W axis, B axle and C axis
It sets.
According to the measurement point F of the measurement method measurement origin feature group of each measurement point in (4) point, corresponding whirlpool is obtained
The mechanical coordinate value of the Workpiece zero point feature group measurement point F to be added of impeller blade, by the origin of the mechanical coordinate value and master body
The mechanical coordinate value of feature group measurement point F is compared to obtain the error amount of X-axis, Y-axis, W axis, B axle and C axis.
(9) correction in small hole machined
Using the error amount of the X-axis, Y-axis, W axis, B axle and the C axis that are obtained in (8) point as the X-axis of workpiece to be added, Y-axis, W
The correction amount of axis, B axle and C axis is superimposed one by one with the need processing hole location position woven with this correction amount, obtains that hole location need to be processed
Physical location, work in-process is moved to the physical location and processed, to realize in each small hole machined of workpiece to be added
It rectifies a deviation.
In (4) point, surveyed when the moment obtained coordinate value for moving gauge head touching master body surface in seat in the plane is used as
Measure the mechanical coordinate value of point；Alternatively, when moving the moment obtained coordinate for being detached from master body surface after gauge head touching in seat in the plane
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 for W axis perpendicular to X/Y plane, Z axis is processing axis, W axis are placed on W axis and are parallel to, by W axis band
Dynamic Z axis movement, B axle is around Y-axis, and C axis is about the z axis or W axis.
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 cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection 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 axis, wherein four linear axis, two rotary shafts, the linear axis are X
Axis, Y-axis, Z axis, W axis, rotary shaft are B axle, C axis, it is characterised in that:
(1) setting moves gauge head in seat in the plane
One is arranged in advance for electric spark small hole processing machine bed and moves gauge head in seat in the plane, gauge head should be moved by measuring staff in seat in the plane and is set to survey
The displacement sensor of bar end is constituted, and is moved gauge head in seat in the plane and is installed on W axis, is driven and moved up and down by W axis, the displacement sensing
The output signal of device is transmitted to the signal input of the digital control system of electric spark small hole processing machine bed, is formed in seat in the plane with this and moves inspection
Examining system；
(2) measurement point is chosen
Six measurement points are chosen according to the shape and size of turbo blade, in which:
Three measurement points are chosen on the leaf basin of turbo blade, these three measurement points constitute plane triangle on leaf basin, this is flat
The normal of face triangle mass center is defined as levelling normal vector, these three measurement points constitute 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 constitutes one directly
Line segment, the normal at the straightway midpoint are defined as rotation normal vector, the rotation normal vector perpendicular to levelling normal vector,
Its vertical missing is 0 ~ 3 °, the two measurement points constitute 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 constitutes origin feature group, and the origin normal vector is both perpendicular to levelling normal vector and rotates normal vector,
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 constitute a measurement coordinate system, the original of the measurement coordinate system
Point is the measurement point of origin feature group；
(3) clamping master body
Require clamping in electric spark small hole according to technique the master body for the turbo blade made in advance using special fixture
On the workbench of machining tool；
(4) the mechanical coordinate value of six measurement points of master body is obtained
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；
Make the normal parallel of measurement point in X-axis, Y by rotation B axle and C axis for each of six measurement points measurement point
A linear axis in three linear axis of axis and W axis, and using the linear axis as the shifting axle for moving gauge head in seat in the plane, pass through movement
Other two linear axis in three X-axis, Y-axis and W axis linear axis makes to move gauge head alignment measurement point in seat in the plane, mobile in seat in the plane
The shifting axle for moving gauge head, make seat in the plane move gauge head along measurement point normal direction close to master body, when moving gauge head touching in seat in the plane
The moment obtained coordinate value for touching or being detached from master body surface is finally corresponded to as the mechanical coordinate value of measurement point
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) workpiece to be added of clamping turbo blade
Require clamping in the work of electric spark small hole processing machine bed according to technique the workpiece to be added of turbo blade using special fixture
Make on platform；
(6) measurement and correction of the levelling feature group of the workpiece to be added of turbo blade
For the workpiece to be added of clamping turbo blade, surveyed first, in accordance with the measurement method of each measurement point in (4) point
Three measurement points of levelling feature group are measured, the machinery of levelling three measurement points of feature group of workpiece to be added of corresponding turbo blade is obtained
Coordinate value obtains the levelling normal vector of workpiece to be added by the mechanical coordinate value of three measurement points；Then, by workpiece to be added
Levelling normal vector is compared with the levelling normal vector of master body, obtains the error amount of B axle and C axis；Then, B is rotated
Axis and C axis, the levelling normal vector direction of workpiece to be added and the levelling normal vector direction of master body is parallel, it is rectified a deviation
The levelling normal vector of workpiece to be added afterwards, by the levelling method of the levelling normal vector of the workpiece to be added after correction and master body
Line vector compares, and obtains the error amount of X-axis, Y-axis and W axis；
(7) 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, surveyed first, in accordance with the measurement method of each measurement point in (4) point
Two measurement points of hyperspin feature group are measured, the machinery of two measurement points of workpiece hyperspin feature group to be added of corresponding turbo blade is obtained
Coordinate value obtains the rotation normal vector of workpiece to be added by the mechanical coordinate value of two measurement points；Then, by workpiece to be added
Rotation normal vector is compared with the rotation normal vector of master body, obtains the error amount of B axle and C axis；Then, B is rotated
Axis and C axis, 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 rotary process of the rotation normal vector and master body of the workpiece to be added after correction
Line vector compares, and obtains the error amount of X-axis, Y-axis and W axis；
(8) 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) put X-axis, Y-axis that levelling feature group obtains, W axis, B axle and
The error amount of C axis is superimposed with the error amount of X-axis, Y-axis, W axis, B axle and C axis that (7) point hyperspin feature group obtains, and 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 axis, B axle and C axis；
According to a measurement point of the measurement method measurement origin feature group of each measurement point in (4) point, corresponding whirlpool is obtained
The mechanical coordinate value of the Workpiece zero point feature group measurement point to be added of impeller blade, by the origin of the mechanical coordinate value and master body spy
The mechanical coordinate value of sign group measurement point is compared to obtain the error amount of X-axis, Y-axis, W axis, B axle and C axis；
(9) correction in small hole machined
Using the error amount of the X-axis, Y-axis, W axis, B axle and the C axis that are obtained in (8) point as the X-axis of workpiece to be added, Y-axis, W axis, B
The correction amount of axis and C axis is superimposed one by one with the need processing hole location position woven with this correction amount, obtains the reality that need to process hole location
Border position, work in-process are moved to the physical location and are processed, and are carried out in each small hole machined of workpiece to be added with realizing
Correction.
2. the processing method of turbo blade numerical control electric spark aperture On-machine Test correction according to claim 1, feature
It is: in (4) point, touches the moment obtained coordinate value on master body surface as measurement point when moving gauge head in seat in the plane
Mechanical coordinate value.
3. the processing method of turbo blade numerical control electric spark aperture On-machine Test correction according to claim 1, feature
It is: in (4) point, the moment obtained coordinate value conduct on disengaging master body surface after moving gauge head touching in seat in the plane
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, feature
Be: the vertical missing is 0 ~ 1.5 °.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710665595.6A CN107560576B (en) | 2017-08-07 | 2017-08-07 | The processing method of turbo blade numerical control electric spark aperture On-machine Test correction |
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| CN108917548B (en) * | 2018-04-19 | 2020-05-19 | 中国航发南方工业有限公司 | Turbine blade profile detection method and measuring device |
| CN110064804B (en) * | 2019-04-30 | 2020-05-15 | 中国航发南方工业有限公司 | Machining method of small hole with spatial angle of aviation part |
| CN113776479B (en) * | 2019-07-01 | 2024-02-27 | 中国航发常州兰翔机械有限责任公司 | Turbine blade filling box alignment device easy to adjust and high in precision |
| CN110717276B (en) * | 2019-10-14 | 2021-11-16 | 西北工业大学 | Method for detecting and evaluating geometric structure of special-shaped air film hole based on industrial CT scanning |
| CN111958074B (en) * | 2020-07-13 | 2022-12-02 | 清华大学 | Self-adaptive positioning method for turbine blade air film hole |
| CN113042836B (en) * | 2021-03-25 | 2022-05-17 | 北京石油化工学院 | Penetration detection process for aviation blade air film hole |
| CN114226898A (en) * | 2022-02-24 | 2022-03-25 | 成都和鸿科技股份有限公司 | Method for determining hole site of air film hole |
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