CN103557802A - Method for measuring diameter and coordinate position of spatial curved surface micro-hole in non-contact mode - Google Patents
Method for measuring diameter and coordinate position of spatial curved surface micro-hole in non-contact mode Download PDFInfo
- Publication number
- CN103557802A CN103557802A CN201310577676.2A CN201310577676A CN103557802A CN 103557802 A CN103557802 A CN 103557802A CN 201310577676 A CN201310577676 A CN 201310577676A CN 103557802 A CN103557802 A CN 103557802A
- Authority
- CN
- China
- Prior art keywords
- blade
- curved surface
- hole
- air film
- axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention belongs to the field of measurement of the diameter and the space coordinate geometric dimensioning of a spatial curved surface thin-wall micro-hole, and relates to a method for measuring the diameter and the coordinate position of the spatial curved surface micro-hole in a non-contact mode, in particular to the method for measuring the diameter and the coordinate position of the spatial curved surface micro-hole in a blade body of a blade by compositely designing and applying a telecentric optical lens and a five-axis coordinate measurement machine. A contact-type probe of the five-axis optical composite coordinate measurement machine is used for setting up a measuring basis of the diameter and the coordinate position of the spatial curved surface micro-hole of a workpiece, a two-dimensional rotating table is used for determining a spatial posture according to the direction of the axis of the spatial curved surface micro-hole, and the telecentric optical lens is used for extracting an image of the spatial curved surface micro-hole. The method can solve the difficult technical problem that data extraction and evaluation can not be conduced due to the fact that the image of the micro-hole is blurred, digitalized precise measurement of the diameter and the coordinate position of the spatial curved surface micro-hole is achieved, and the feasible measurement method is provided for effectively controlling machining quality of a gas film hole of the blade of an aviation engine and the like.
Description
Technical field
The invention belongs to the fields of measurement of space curved surface thin-walled micro hole diameter and volume coordinate physical dimension, be specially a kind of method of non-cpntact measurement space curved surface micro hole diameter and coordinate position, particularly by the method for telecentric optics camera lens and five axial coordinate measuring machine composite design and application, measurement blade blade space curved surface micro hole diameter and coordinate position.
Background technology
In prior art, the diameter of measured hole and the main method of coordinate position and existing problems:
(1) three-dimensional coordinates measurement method
With three coordinate measuring machine and equipped dual spindle accurate rotating platform (i.e. five axle three coordinate measuring machines) thereof, can realize the measurement that diameter is greater than to the above space curved surface bore dia of Φ 1mm and coordinate position, and there is the features such as precision is high, intelligent.But, because chaining pin is surveyed bulb diameter (that minimum is Φ 0.5mm) restriction, for the hole that is less than Φ 1mm, survey the very large difficulty of inwall existence that ball stretches into endoporus exploration hole, particularly be equal to or less than the hole of Φ 0.5mm, can not go deep into the inwall that endoporus touches hole, and cannot detection obtain data, three coordinate measuring machine is helpless.
(2) optical coordinate measuring method
Traditional optical coordinate measuring machine is to take universal tool-measuring microscope as Typical Representative, and Φ 0.25mm～Φ 0.5mm micro hole diameter and coordinate position on measurement plane, have absolute predominance, and precision is high, easy and simple to handle.But, when measurement space curved surface micro hole diameter and coordinate position, exist location and the image fog in hole, be difficult to aim at, evaluate the problem of diameter and coordinate position, therefore also cannot realize measurement, see Fig. 1.
Contemporary optics coordinate measuring machine is that to take optics composite coordinate measuring machine be representative, and it is on the basis of three coordinate measuring machine, has increased optical lens and laser probe, and contact measurement and non-cpntact measurement are combined together.Therefore, its function ratio universal tool-measuring microscope is more powerful, and intelligent level is higher.But, when measurement space curved surface micro hole diameter and coordinate position, exist equally the image fog in hole, be difficult to aim at, evaluate the problem of diameter and coordinate position, therefore also cannot realize measurement, see Fig. 1.
A large amount of blades is housed in turbomachinery, and these blades need to keep good mechanical property under high temperature and high speed condition, with the power that provides that guarantees that turbine can continue.Therefore, need to improve the warm ability of holding of blade, its major measure one is to select high-temperature alloy material and special thermal treatment technique; The 2nd, a large amount of complex structure of design processing, the small cold gas fenestra that distributes not etc. on blade blade curved surface.Blade curved surface is space curved surface, is again thin-walled, and micro hole diameter is generally at Φ 0.25mm～Φ 0.5mm, and space angle is complicated, and the angle of every exhaust fenestra is all not quite similar.Therefore, powerful three coordinate measuring machine surveys because of chaining pin the diameter that ball minimum diameter Φ 0.5mm is more than or equal to measured hole, cannot survey extraction data.The domestic optical coordinate measuring equipment of seeing, because of Special composition curved surface micro hole curve respectively want vegetarian refreshments, not at grade, the image being presented under optical lens is imperfect unintelligible, cannot evaluate diameter and the centre coordinate position of micro hole.
Summary of the invention
A kind of method that the object of this invention is to provide non-cpntact measurement space curved surface micro hole diameter and coordinate position, the accurate location that application dual spindle accurate rotating platform and blade locking device have been realized blade space, by telecentric optics camera lens and five axial coordinate measuring machine composite design and application, solve micro hole image fog and can not extract the technical barrier of data and evaluation, realization is measured the digital accurate of measurement space curved surface micro hole diameter and coordinate position, for effectively controlling the crudies such as blade of aviation engine air film hole, provide a kind of feasible measuring method.
Technical scheme of the present invention is:
A method for non-cpntact measurement space curved surface micro hole diameter and coordinate position, by telecentric optics camera lens with the three coordinate measuring machine of two-dimentional turntable worktable, carry out compoundly, form five axle optics composite coordinate measuring machines; Application contact probe is set up the measuring basis of space curved surface micro hole diameter and coordinate position workpiece, applies two-dimentional turntable worktable and determines spatial attitude according to space curved surface micro hole axis direction, and application telecentric optics camera lens extracts space curved surface micro hole image.
Described non-cpntact measurement space curved surface micro hole diameter and the method for coordinate position, two-dimentional turntable worktable is dual spindle accurate rotating platform.
Described non-cpntact measurement space curved surface micro hole diameter and the method for coordinate position, micro hole is blade of aviation engine air film hole, by using blade locking device and blade tenon tooth contact to realize the location to blade.
Described non-cpntact measurement space curved surface micro hole diameter and the method for coordinate position, the foundation of blade of aviation engine air film hole measuring basis and coordinate system is as follows:
1) foundation of blade O-O axis
On two-dimentional turntable worktable, blade locking device is set, two locating pieces of blade locking device: stationary positioned piece and activity orientation piece, be relatively arranged on the tenon tooth both sides of blade, the top surface of blade locking device is locating device plane; Two locating pieces contact with tenon tooth is seamless, and the circular arc cylinder center of described seamless contact is blade F reference plane; Blade locking device is provided with place kick in one end of the tenon tooth direction perpendicular to blade O-O axis, contact with blade T reference plane, realize the location of this direction, blade O-O axis is overlapped with blade locking device central axis and the horizontal revolving shaft of two-dimentional turntable worktable;
According to the position of blade O-O axle, adjust place kick, the one end that makes place kick to the distance of blade locking device center steering axle is L, equates, to guarantee the accurate location of blade on tenon tooth length direction with blade T reference plane in the distance to blade O-O axis;
2) foundation of blade F benchmark
With the center of the seamless two locating piece circular arc cylinders that contact of blade tenon tooth in blade F reference plane; Set up in the practical operation of F reference plane, the plane that the center of the two locating piece circular arc cylinders of blade locking device in clamped condition forms is overlapped with blade F reference plane, and measure this plane to the distance of locating device plane, complete the foundation of blade F benchmark;
3) set up blade measuring basis coordinate system
By blade F reference plane, blade O-O axis, X-axis line, set up coordinate system, wherein: the Z axis of coordinate system is blade O-O axis, the X-axis of coordinate system and Y-axis are located in blade F reference plane, and the X-axis of coordinate system is parallel with the blade tenon tooth plane of symmetry.
Described non-cpntact measurement space curved surface micro hole diameter and the method for coordinate position, the measuring device of blade of aviation engine air film hole is comprised of two parts: telecentric optics camera lens with the three coordinate measuring machine of two-dimentional turntable worktable, optical lens is positioned at a side of contact probe, the measurement mechanism of optical lens and three coordinate measuring machine composite design Special composition curved surface air film hole diameter and coordinate position.
Described non-cpntact measurement space curved surface micro hole diameter and the method for coordinate position, two dimension turntable worktable can be around orthogonal two rotating shafts rotation, both can be around the revolving shaft rotation perpendicular to surface level, again can be around the revolving shaft rotation that is parallel to surface level, rotation by two-dimentional turntable worktable at two-dimensional directional, drive the tested blade on blade locking device, to adjust the mutual alignment relation of optical lens on air film hole and optical axis; Two dimension turntable worktable forms the mechanism of the air film hole locus of controlling blade together with blade locking device, makes air film hole central axis coaxial or parallel with telecentric optics camera lens, to guarantee that video camera passes through telecentric optics camera lens and extracts air film hole contour images; Telecentric optics camera lens is in air film hole central axial direction, obtains the point different with respect to object lens distance and forms the picture of hole profile space line, and on video camera target surface, clearly show the two dimensional image of pore-forming.
Described non-cpntact measurement space curved surface micro hole diameter and the method for coordinate position, video camera send Survey Software evaluation by air film hole two-dimensional image data, the diameter and the bidimensional coordinate position size that obtain air film hole, the angle of air film hole is determined by dual spindle accurate rotating platform and is provided.
Described non-cpntact measurement space curved surface micro hole diameter and the method for coordinate position, the process of measurement blade of aviation engine space curved surface air film hole diameter and position dimension, specific as follows:
(1) common chaining pin is arranged on to the upper calibration of three coordinate measuring machine contact probe three-dimensional standard ball, meets the assigned address that is put into chaining pin storehouse after measurement requires together with sucker;
(2) by blade clamping on blade locking device, and adjust centering with indicating gauge, make blade locking device center, blade O-O axis and dual spindle accurate rotating platform central axis coaxial;
(3) call common chaining pin, according to drawing requirement, set up measuring basis and coordinate system;
(4), according to the given air film hole space angle of drawing requirement, the angle that keyboard input dual spindle accurate rotating platform should turn, makes air film hole central axis coaxial or parallel with telecentric optics camera lens;
(5) use telecentric optics camera lens to aim at tested blade air film hole, extract air film hole space profiles curve, video camera send Survey Software evaluation by this air film hole two-dimensional image data obtaining through telecentric optics camera lens, obtain diameter and the bidimensional coordinate position size of air film hole, obtain measurement result.
Advantage of the present invention and beneficial effect are:
1, the present invention, by the composite design of telecentric optics camera lens and five axial coordinate measuring machines, has solved the extraction problem of space curved surface micro hole profile space curve image, for Survey Software is evaluated micro hole diameter and centre coordinate provides crucial important necessary condition.
2, the present invention selects dual spindle accurate rotating platform as the utility appliance of non-cpntact measurement space curved surface micro hole diameter and coordinate position method, solved the rotation orientation problem of micro hole space angle, make the light shaft coaxle of micro hole central axis and telecentric optics camera lens or parallel, for extracting micro hole true diameter, provide ideal conditions.
3, the present invention take that to measure blade of aviation engine be example, use blade locking device and blade tenon tooth contact to realize the location to blade, introduce a kind of locating device of space curved surface micro hole workpiece, solved the clamping orientation problem of space curved surface micro hole class workpiece.
4, the present invention take that to measure blade of aviation engine be example, introduce a kind of method of setting up space curved surface micro hole workpiece calibration benchmark and coordinate system on five axle optics composite coordinate measuring machines, solved benchmark and the coordinate system problem of setting up measurement space curved surface micro hole diameter and coordinate position.
5, the present invention has novelty at measurement space curved surface micro hole diameter and coordinate field, is not only applicable to the measurement of turbomachinery blade air film hole, also can in the engineering goods of other similar structures, be used widely.The measurement of blade of aviation engine air film hole, can quantitative test verify blade air film hole state of the art, improves blade of aviation engine air film hole technology level, and its Social benefit and economic benefit is difficult to estimation.
In a word, the method of telecentric optics camera lens of the present invention and five axial coordinate measuring machine composite design and application, measurement space curved surface micro hole diameter and coordinate position, the five axial coordinate measuring machines with dual spindle accurate rotating platform and telecentric optics camera lens of development, use optical image measuring technique, realized the non-cpntact measurement to the small air film hole diameter of blade blade space curved surface and coordinate position, the immeasurable history of blade air film hole is through with.
Accompanying drawing explanation
Fig. 1 is space curved surface micro hole magnified image figure.
The localization method schematic diagram of Fig. 2 blade of the present invention on locating device.
Fig. 3 is the schematic diagram of activity orientation piece of the present invention and stationary positioned piece.
Fig. 4 is measurement mechanism structural representation of the present invention.
Fig. 5 is air film hole axis of the present invention coaxial with camera lens optical axis (or parallel) schematic diagram.
Fig. 6 is the coordinate system schematic diagram that the present invention measures air film hole.
In figure, 1 tenon tooth; 2 stationary positioned pieces; 3 blade F reference planes; 4 blade locking devices; 5 two-dimentional turntable worktable; 6 place kick; 7 locating device planes; 8 blade T reference planes; 9 optical lens; 10 contact probes; 11 activity orientation pieces; 12 three coordinate measuring machines; 13 air film holes; 14 rule blades; 15 optical axises; 16 rotation of rotary table centers; 17 locating pieces and tenon tooth surface of contact.
Embodiment
As shown in Fig. 1-Fig. 6, the method for non-cpntact measurement space curved surface micro hole diameter of the present invention and coordinate position, specific as follows:
(1) composite design of telecentric optics camera lens and application
The present invention carries out compound (i.e. five axle optics composite coordinate measuring machines) by telecentric optics camera lens and the three coordinate measuring machine with dual spindle accurate rotating platform, application contact probe is set up the measuring basis of space curved surface micro hole diameter and coordinate position workpiece, application dual spindle accurate rotating platform is determined spatial attitude according to space curved surface micro hole axis direction, application telecentric optics camera lens extracts space curved surface micro hole image (Fig. 1), solves the fuzzy immeasurable problem of general camera lens hypograph.
(2) workpiece localization method
The location of space curved surface micro hole diameter and coordinate position workpiece, need to select suitable localization method (or design blade locking device) according to measured workpiece drawing requirement, the present invention take that to measure blade of aviation engine air film hole be example, introduce the localization method of space curved surface micro hole diameter and coordinate position workpiece, by using blade locking device and blade tenon tooth contact to realize the location to blade.
(3) foundation of measuring basis and coordinate system
The method of setting up measuring basis is:
1) foundation of blade O-O axis
As shown in Figure 2 and Figure 3, on two-dimentional turntable worktable 5, blade locking device 4 is set, the stationary positioned piece 2 of blade locking device 4 and activity orientation piece 11 are relatively arranged on tenon tooth 1 both sides of blade, and the top surface of blade locking device 4 is locating device plane 7; Stationary positioned piece 2, activity orientation piece 11, by locating piece and tenon tooth surface of contact 17, are realized and being contacted with tenon tooth 1 is seamless, and the circular arc cylinder center of described seamless contact is blade F reference plane 3; Blade locking device 4 is provided with place kick 6 in one end of the tenon tooth direction perpendicular to blade O-O axis, contact with vertical blade T reference plane 8, in figure, blade O-O axis and blade locking device 4(fixture) central axis and the horizontal revolving shaft of two-dimentional turntable worktable overlap.
According to the position of blade O-O axle, adjust place kick 6, the one end that makes place kick 6 to the distance of blade locking device 4 center steering axles is L, equate in the distance to blade O-O axis with blade T reference plane 8, to guarantee the accurate location of blade on tenon tooth 1 length direction.
2) foundation of blade F benchmark
According to the locating piece of blade part figure or Process Planning, it is blade F reference plane 3 with the center of the seamless circular arc cylinder contacting of tenon tooth 1 in theory.Set up in the practical operation of F reference plane, the plane that the stationary positioned piece 2 of blade locking device 4 and the center of the 11 liang of circular arc cylinders of activity orientation piece in clamped condition are formed overlaps with blade F reference plane 3, completes the foundation of blade F benchmark.
3) set up blade measuring basis coordinate system
By blade F reference plane 3, blade O-O axis, X-axis line, set up coordinate system, wherein: the Z axis of coordinate system is blade O-O axis, the X-axis of coordinate system and Y-axis are located in blade F reference plane 3, and the X-axis of coordinate system is parallel with the blade tenon tooth plane of symmetry.
In the present invention, the measuring basis of space curved surface micro hole diameter and coordinate and the method for building up of coordinate system, specific as follows:
(1) measurement mechanism
As shown in Figure 4, measurement mechanism of the present invention is comprised of two parts: telecentric optics camera lens 9 with two-dimentional turntable worktable 5(dual spindle accurate rotating platform) three coordinate measuring machine 12, optical lens 9 is positioned at a side of contact probe 10, and optical lens 9 and three coordinate measuring machine 12 composite design have formed the measurement mechanism of space curved surface micro hole diameter and coordinate position.
The function of each several part is:
Three coordinate measuring machine 12 is main bodys of digitizing, robotization, intelligent measuring, completes the driving of each coordinate axis, the micro hole view data that the foundation of workpiece coordinate, processing and evaluation are extracted realizes the measurement to micro hole.
As shown in Figure 5, two dimension turntable worktable 5(dual spindle accurate rotating platform) can be around orthogonal two rotating shafts rotation, both can rotate around the revolving shaft perpendicular to surface level (B axle), again can be around revolving shaft (A axle) rotation that is parallel to surface level, by two-dimentional turntable worktable 5(dual spindle accurate rotating platform) in the rotation of two-dimensional directional, drive the blade 14 on blade locking device 4, to adjust the mutual alignment relation of the optical axis 15 on air film hole 13 axis and optical lens 9.
Two dimension turntable worktable 5(dual spindle accurate rotating platform) form the mechanism that controls micro hole (as: air film hole 13 of blade) workpiece locus together with blade locking device 4, can be according to micro hole drawing requirement, determine workpiece attitude, make light shaft coaxle or parallel (the seeing Fig. 5) of micro hole central axis and telecentric optics camera lens 9, to guarantee that video camera passes through telecentric optics camera lens and extracts micro hole contour images.
The effect of telecentric optics camera lens 9 is in micro hole central axial direction, obtains the point different with respect to object lens distance and forms the picture of hole profile space line, and can on video camera target surface, clearly show the two dimensional image of pore-forming.
(2) locating device and workpiece location
Space curved surface micro hole workpiece generally has design and processes benchmark, according to benchmark architecture difference, can design the different fixtures of processing, the present invention be take blade of aviation engine as example, use designed blade locking device 4(fixture) blade air film hole 13 (blade space curved surface micro hole) is positioned, in conjunction with dual spindle accurate rotating platform, can realize according to blade drawing requirement and determine workpiece attitude, make micro hole central axis coaxial or parallel with telecentric optics camera lens.
(3) measurement of space curved surface micro hole
Take blade as example, set up after measuring basis and coordinate system, use telecentric optics camera lens 9 to extract blade blade air film hole 13 (space curved surface micro hole) space profiles curve, project image onto on video camera target surface, video camera send existing five axle three coordinate measuring engine measurement softwares to evaluate air film hole two-dimensional image data, the diameter and the bidimensional coordinate position size that obtain micro hole, the angle of air film hole 13 is determined by dual spindle accurate rotating platform and is provided.
The present invention be take blade of aviation engine air film hole and is introduced the process of measurement space curved surface micro hole diameter and position dimension as example, specific as follows:
(1) the long suitable common chaining pin of bar is arranged on three coordinate measuring machine contact probe 10 and calibrates three-dimensional standard ball, meet the assigned address that is put into chaining pin storehouse after measurement requires together with sucker.
(2) press method shown in Fig. 2 by blade clamping on blade locking device 4, and adjust centering with indicating gauge, make blade locking device 4 centers, blade revolving shaft O-O axis and dual spindle accurate rotating platform central axis coaxial.
(3) call common chaining pin, according to drawing requirement, set up measuring basis and coordinate system.
(4), according to the given air film hole space angle of drawing requirement, the angle that keyboard input dual spindle accurate rotating platform should turn, makes air film hole 13 central axis coaxial or parallel with telecentric optics camera lens 9, sees Fig. 5.
(5) use telecentric optics camera lens 9 to extract blade blade air film hole 13 (space curved surface micro hole) space profiles curve, project image onto on video camera target surface, video camera send existing five axle three coordinate measuring engine measurement softwares to evaluate air film hole two-dimensional image data, obtains diameter and the bidimensional coordinate position size of micro hole.Use telecentric optics camera lens 9 to aim at tested blade air film hole, extract air film hole 13 (space curved surface micro hole) space profiles curve, video camera send five axle three coordinate measuring engine measurement softwares to evaluate this micro hole two-dimensional image data obtaining through telecentric optics camera lens, obtain diameter and the bidimensional coordinate position size of micro hole, obtain measurement result.
Embodiment
Aeromotor high-pressure turbine blade air film hole is the micro hole of blade, generally at Φ 0.3mm～Φ 0.5mm, is typical space curved surface micro hole.Therefore, the present invention is usingd the detection of high-pressure turbine blade air film hole diameter and coordinate position size as embodiments of the invention.
(1) foundation of blade O-O axis
According to the position of blade O-O axle, adjust place kick 6, making place kick 6 to the distance of blade locking device 4 center steering axles is L, equates, to guarantee the accurate location of blade on tenon tooth 1 length direction with blade T reference plane 8 in the distance to blade O-O axis.
The clamp system of blade locking device 4 has adopted micro-deformation principle when design, avoid clamping the positioning error causing, locating piece is divided into stationary positioned piece 2 and fine-tuning activity orientation piece 11, activity orientation piece 11 is embedded in groove, activity orientation piece 11 firmly contacts with blade tenon tooth 1, and the length of activity orientation piece 11 is greater than blade tenon tooth 1 length.Blade pass is crossed locating piece (stationary positioned piece 2 and activity orientation piece 11) clamping on blade locking device 4, has guaranteed blade beat not in the horizontal direction, has also guaranteed that in the vertical direction does not rotate, beat not simultaneously.
Because place kick 6 and locating piece can guarantee the location completely of blade, thus blades installation on blade locking device after, the central axes of blade O-O axis and blade locking device 4, as Fig. 5.By installing and centering, make blade locking device 4(fixture again) central axis overlap with the horizontal axis of rotation of two-dimentional turntable worktable.
(2) conversion of blade F benchmark
According to the locating piece of blade design figure or Process Planning, its circular arc cylinder contacts with tenon tooth 1 is seamless in theory, and the plane that the center of two circular arc cylinders forms is the F reference plane of blade.In setting up the practical operation of F reference plane, the stationary positioned piece 2 of blade locking device 4 and plane that 11 liang of circular arc cylinders of the activity orientation piece in clamped condition form are overlapped with blade F reference plane 3, see Fig. 2.Measurement and positioning Kuai center, to the distance size of the locating device plane 7 of blade locking device 4, makes stealthy F benchmark convert the contact probe 10 locating device planes 7 that can directly measure to, completes the foundation of blade F benchmark.
(3) set up blade F reference plane
Survey out blade locking device plane 7 to the plan range at locating piece center, then measurement and positioning device plane 7, this distance of biased downward is to locating piece central plane, i.e. blade F reference plane, and this plane is coordinate system Z zero plane.
(4) set up X-axis
In the locating piece vertical guide of blade locking device 4, select straight line to determine X-direction, this straight line should be parallel with tenon tooth 1 plane of symmetry.
(5) set up the coordinate system of measuring air film hole
In measuring the process of air film hole 13, coordinate system direction does not change, and coordinate origin position changes along with the air film hole 13 space angles differences of position, hole rule blade 14.Blade is in 16 rotary courses of rotation of rotary table center, and when B axle rotates, coordinate origin coordinate is constant; When A axle rotates, because rotation of rotary table center 16 to blade true origin distance is 156.562mm, measurement and positioning Kuai center is of a size of 78mm(to the distance of the locating device plane 7 of blade locking device 4 and sees Fig. 6), after rotation, X coordinate is constant, and Y coordinate changes.Due to postrotational air film hole 13Wei projection coordinate, therefore do not consider postrotational Z coordinate.
Suppose that former coordinate origin is X, Y, rotates respectively A around A axle, B axle
1angle, B
1coordinate origin behind angle is X
1, Y
1:
X
1=X
Y
1=Y＋156.562cos?A
1
(6) air film hole is measured
By keyboard, input the point of theory that blade air film hole drawing provides, dual spindle accurate rotating platform rotation, to the locus of air film hole 13 to be measured, makes micro hole central axis coaxial or parallel with telecentric optics camera lens 9, as Fig. 5.Use telecentric optics camera lens to extract blade air film hole contour images, by three-dimensional coordinates measurement software, evaluate, can obtain diameter and the coordinate position of air film hole.
Claims (8)
1. a method for non-cpntact measurement space curved surface micro hole diameter and coordinate position, is characterized in that, by telecentric optics camera lens with the three coordinate measuring machine of two-dimentional turntable worktable, carry out compoundly, form five axle optics composite coordinate measuring machines; Application contact probe is set up the measuring basis of space curved surface micro hole diameter and coordinate position workpiece, applies two-dimentional turntable worktable and determines spatial attitude according to space curved surface micro hole axis direction, and application telecentric optics camera lens extracts space curved surface micro hole image.
2. according to the method for non-cpntact measurement space curved surface micro hole diameter claimed in claim 1 and coordinate position, it is characterized in that, two-dimentional turntable worktable is dual spindle accurate rotating platform.
3. according to the method for non-cpntact measurement space curved surface micro hole diameter claimed in claim 1 and coordinate position, it is characterized in that, micro hole is blade of aviation engine air film hole, by using blade locking device and blade tenon tooth contact to realize the location to blade.
4. according to the method for non-cpntact measurement space curved surface micro hole diameter claimed in claim 3 and coordinate position, it is characterized in that, the foundation of blade of aviation engine air film hole measuring basis and coordinate system is as follows:
1) foundation of blade O-O axis
On two-dimentional turntable worktable, blade locking device is set, two locating pieces of blade locking device: stationary positioned piece and activity orientation piece, be relatively arranged on the tenon tooth both sides of blade, the top surface of blade locking device is locating device plane; Two locating pieces contact with tenon tooth is seamless, and the circular arc cylinder center of described seamless contact is blade F reference plane; Blade locking device is provided with place kick in one end of the tenon tooth direction perpendicular to blade O-O axis, contact with blade T reference plane, realize the location of this direction, blade O-O axis is overlapped with blade locking device central axis and the horizontal revolving shaft of two-dimentional turntable worktable;
According to the position of blade O-O axle, adjust place kick, the one end that makes place kick to the distance of blade locking device center steering axle is L, equates, to guarantee the accurate location of blade on tenon tooth length direction with blade T reference plane in the distance to blade O-O axis;
2) foundation of blade F benchmark
With the center of the seamless two locating piece circular arc cylinders that contact of blade tenon tooth in blade F reference plane; Set up in the practical operation of F reference plane, the plane that the center of the two locating piece circular arc cylinders of blade locking device in clamped condition forms is overlapped with blade F reference plane, and measure this plane to the distance of locating device plane, complete the foundation of blade F benchmark;
3) set up blade measuring basis coordinate system
By blade F reference plane, blade O-O axis, X-axis line, set up coordinate system, wherein: the Z axis of coordinate system is blade O-O axis, the X-axis of coordinate system and Y-axis are located in blade F reference plane, and the X-axis of coordinate system is parallel with the blade tenon tooth plane of symmetry.
5. according to the method for non-cpntact measurement space curved surface micro hole diameter claimed in claim 3 and coordinate position, it is characterized in that, the measuring device of blade of aviation engine air film hole is comprised of two parts: telecentric optics camera lens with the three coordinate measuring machine of two-dimentional turntable worktable, optical lens is positioned at a side of contact probe, the measurement mechanism of optical lens and three coordinate measuring machine composite design Special composition curved surface air film hole diameter and coordinate position.
6. according to the method for non-cpntact measurement space curved surface micro hole diameter claimed in claim 5 and coordinate position, it is characterized in that, two dimension turntable worktable can be around orthogonal two rotating shafts rotation, both can be around the revolving shaft rotation perpendicular to surface level, again can be around the revolving shaft rotation that is parallel to surface level, rotation by two-dimentional turntable worktable at two-dimensional directional, drives the tested blade on blade locking device, to adjust the mutual alignment relation of optical lens on air film hole and optical axis; Two dimension turntable worktable forms the mechanism of the air film hole locus of controlling blade together with blade locking device, makes air film hole central axis coaxial or parallel with telecentric optics camera lens, to guarantee that video camera passes through telecentric optics camera lens and extracts air film hole contour images; Telecentric optics camera lens is in air film hole central axial direction, obtains the point different with respect to object lens distance and forms the picture of hole profile space line, and on video camera target surface, clearly show the two dimensional image of pore-forming.
7. according to the method for non-cpntact measurement space curved surface micro hole diameter claimed in claim 6 and coordinate position, it is characterized in that, video camera send Survey Software evaluation by air film hole two-dimensional image data, the diameter and the bidimensional coordinate position size that obtain air film hole, the angle of air film hole is determined by dual spindle accurate rotating platform and is provided.
8. according to the method for non-cpntact measurement space curved surface micro hole diameter claimed in claim 6 and coordinate position, it is characterized in that, measure the process of blade of aviation engine space curved surface air film hole diameter and position dimension, specific as follows:
(1) common chaining pin is arranged on to the upper calibration of three coordinate measuring machine contact probe three-dimensional standard ball, meets the assigned address that is put into chaining pin storehouse after measurement requires together with sucker;
(2) by blade clamping on blade locking device, and adjust centering with indicating gauge, make blade locking device center, blade O-O axis and dual spindle accurate rotating platform central axis coaxial;
(3) call common chaining pin, according to drawing requirement, set up measuring basis and coordinate system;
(4), according to the given air film hole space angle of drawing requirement, the angle that keyboard input dual spindle accurate rotating platform should turn, makes air film hole central axis coaxial or parallel with telecentric optics camera lens;
(5) use telecentric optics camera lens to aim at tested blade air film hole, extract air film hole space profiles curve, video camera send Survey Software evaluation by this air film hole two-dimensional image data obtaining through telecentric optics camera lens, obtain diameter and the bidimensional coordinate position size of air film hole, obtain measurement result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310577676.2A CN103557802B (en) | 2013-11-18 | 2013-11-18 | A kind of method of non-cpntact measurement space curved surface micro hole diameter and coordinate position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310577676.2A CN103557802B (en) | 2013-11-18 | 2013-11-18 | A kind of method of non-cpntact measurement space curved surface micro hole diameter and coordinate position |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103557802A true CN103557802A (en) | 2014-02-05 |
| CN103557802B CN103557802B (en) | 2015-10-07 |
Family
ID=50012113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310577676.2A Active CN103557802B (en) | 2013-11-18 | 2013-11-18 | A kind of method of non-cpntact measurement space curved surface micro hole diameter and coordinate position |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103557802B (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930983A (en) * | 2015-06-18 | 2015-09-23 | 中国南方航空工业(集团)有限公司 | Measuring method used for measuring internal structure of blade and used jig |
| CN108180852A (en) * | 2017-12-22 | 2018-06-19 | 中国航空工业集团公司北京航空精密机械研究所 | A kind of lighting source measured for air film hole morpheme parameter image |
| CN110487230A (en) * | 2019-08-16 | 2019-11-22 | 成都和鸿科技有限公司 | A kind of detection method of heavy duty gas turbine stator blade air film hole |
| CN111724341A (en) * | 2020-05-12 | 2020-09-29 | 华中科技大学 | Aviation blade air film hole quality detection method based on binocular stereo measurement |
| CN111879270A (en) * | 2020-09-01 | 2020-11-03 | 中国工程物理研究院机械制造工艺研究所 | Rotating platform and spherical coordinate measuring machine based on same |
| CN111982029A (en) * | 2020-07-27 | 2020-11-24 | 华东师范大学 | Turbine blade air film hole space azimuth error measuring method |
| CN112097718A (en) * | 2020-09-18 | 2020-12-18 | 山西平阳重工机械有限责任公司 | Detection method of turbine disk with crown |
| CN112284273A (en) * | 2020-10-19 | 2021-01-29 | 中国航发哈尔滨轴承有限公司 | Method for measuring size of vertical cylindrical pocket thin-wall plastic bearing retainer pocket |
| CN112304223A (en) * | 2020-10-29 | 2021-02-02 | 中国航空工业集团公司洛阳电光设备研究所 | Device and method for detecting imaging area of small spherical crown of optical goggles |
| CN112797922A (en) * | 2019-11-13 | 2021-05-14 | 中国航发南方工业有限公司 | Use method of measuring needle for measuring angle of small micropore of blade |
| CN112797921A (en) * | 2019-11-13 | 2021-05-14 | 中国航发南方工业有限公司 | Measuring needle for measuring angle of small micropore of blade |
| CN112857280A (en) * | 2021-01-14 | 2021-05-28 | 上海航翼高新技术发展研究院有限公司 | Tool of measuring machine for rotor blade of aircraft engine and coordinate system establishing method thereof |
| CN113108738A (en) * | 2021-03-25 | 2021-07-13 | 中国航发南方工业有限公司 | Rotary table of turbine disc mortise three-coordinate measuring machine and fifth axis calibration method |
| CN113776479A (en) * | 2019-07-01 | 2021-12-10 | 中国航发常州兰翔机械有限责任公司 | Easily adjust, high turbine blade of precision irritates case aligning device |
| CN115839670A (en) * | 2022-11-22 | 2023-03-24 | 哈尔滨工业大学 | Large-scale high-speed rotation equipment rotor spherical surface profile measuring device based on multi-dimensional backlight imaging |
| WO2023138119A1 (en) * | 2022-01-18 | 2023-07-27 | 成都飞机工业（集团）有限责任公司 | Non-contact photographing hole measurement calibration device and method |
| CN116558425A (en) * | 2023-07-12 | 2023-08-08 | 无锡万耐特自动化设备股份公司 | Automatic detection device and detection method for non-contact optical lens of windscreen wiper |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693842A (en) * | 2005-06-10 | 2005-11-09 | 北京工业大学 | Measuring instrument for paper cup |
| CN101013027A (en) * | 2007-01-31 | 2007-08-08 | 中国人民解放军国防科学技术大学 | High-frequency error detecting apparatus and method for heavy caliber heavy relative aperture aspherical mirror |
| CN101509878A (en) * | 2009-03-09 | 2009-08-19 | 北京航空航天大学 | Part vision detection device |
| CN201724654U (en) * | 2009-12-09 | 2011-01-26 | 沈阳黎明航空发动机(集团)有限责任公司 | Five-dimensional coordinate telecentric optical measurement system |
| US20110040523A1 (en) * | 2009-08-11 | 2011-02-17 | Okuma Corporation | Method and program for identifying errors |
| CN102620684A (en) * | 2012-04-20 | 2012-08-01 | 安徽国盾三维高科技有限公司 | Three-dimensional topography mark comparison measuring instrument |
-
2013
- 2013-11-18 CN CN201310577676.2A patent/CN103557802B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693842A (en) * | 2005-06-10 | 2005-11-09 | 北京工业大学 | Measuring instrument for paper cup |
| CN101013027A (en) * | 2007-01-31 | 2007-08-08 | 中国人民解放军国防科学技术大学 | High-frequency error detecting apparatus and method for heavy caliber heavy relative aperture aspherical mirror |
| CN101509878A (en) * | 2009-03-09 | 2009-08-19 | 北京航空航天大学 | Part vision detection device |
| US20110040523A1 (en) * | 2009-08-11 | 2011-02-17 | Okuma Corporation | Method and program for identifying errors |
| CN201724654U (en) * | 2009-12-09 | 2011-01-26 | 沈阳黎明航空发动机(集团)有限责任公司 | Five-dimensional coordinate telecentric optical measurement system |
| CN102620684A (en) * | 2012-04-20 | 2012-08-01 | 安徽国盾三维高科技有限公司 | Three-dimensional topography mark comparison measuring instrument |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930983B (en) * | 2015-06-18 | 2018-06-22 | 中国南方航空工业(集团)有限公司 | For measuring the measuring method of blade interior structure and clamp |
| CN104930983A (en) * | 2015-06-18 | 2015-09-23 | 中国南方航空工业(集团)有限公司 | Measuring method used for measuring internal structure of blade and used jig |
| CN108180852A (en) * | 2017-12-22 | 2018-06-19 | 中国航空工业集团公司北京航空精密机械研究所 | A kind of lighting source measured for air film hole morpheme parameter image |
| CN113776479A (en) * | 2019-07-01 | 2021-12-10 | 中国航发常州兰翔机械有限责任公司 | Easily adjust, high turbine blade of precision irritates case aligning device |
| 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 |
| CN110487230A (en) * | 2019-08-16 | 2019-11-22 | 成都和鸿科技有限公司 | A kind of detection method of heavy duty gas turbine stator blade air film hole |
| CN112797922B (en) * | 2019-11-13 | 2024-03-19 | 中国航发南方工业有限公司 | Application method of measuring needle for measuring angle of small micropore of blade |
| CN112797921A (en) * | 2019-11-13 | 2021-05-14 | 中国航发南方工业有限公司 | Measuring needle for measuring angle of small micropore of blade |
| CN112797922A (en) * | 2019-11-13 | 2021-05-14 | 中国航发南方工业有限公司 | Use method of measuring needle for measuring angle of small micropore of blade |
| CN111724341A (en) * | 2020-05-12 | 2020-09-29 | 华中科技大学 | Aviation blade air film hole quality detection method based on binocular stereo measurement |
| CN111724341B (en) * | 2020-05-12 | 2022-06-14 | 华中科技大学 | Aviation blade air film hole quality detection method based on binocular stereo measurement |
| CN111982029A (en) * | 2020-07-27 | 2020-11-24 | 华东师范大学 | Turbine blade air film hole space azimuth error measuring method |
| CN111879270A (en) * | 2020-09-01 | 2020-11-03 | 中国工程物理研究院机械制造工艺研究所 | Rotating platform and spherical coordinate measuring machine based on same |
| CN112097718A (en) * | 2020-09-18 | 2020-12-18 | 山西平阳重工机械有限责任公司 | Detection method of turbine disk with crown |
| CN112097718B (en) * | 2020-09-18 | 2022-07-19 | 山西平阳重工机械有限责任公司 | Detection method of turbine disk with crown |
| CN112284273A (en) * | 2020-10-19 | 2021-01-29 | 中国航发哈尔滨轴承有限公司 | Method for measuring size of vertical cylindrical pocket thin-wall plastic bearing retainer pocket |
| CN112284273B (en) * | 2020-10-19 | 2022-02-08 | 中国航发哈尔滨轴承有限公司 | Method for measuring size of vertical cylindrical pocket thin-wall plastic bearing retainer pocket |
| CN112304223B (en) * | 2020-10-29 | 2023-02-17 | 中国航空工业集团公司洛阳电光设备研究所 | Small spherical crown imaging region detection device for optical goggles |
| CN112304223A (en) * | 2020-10-29 | 2021-02-02 | 中国航空工业集团公司洛阳电光设备研究所 | Device and method for detecting imaging area of small spherical crown of optical goggles |
| CN112857280A (en) * | 2021-01-14 | 2021-05-28 | 上海航翼高新技术发展研究院有限公司 | Tool of measuring machine for rotor blade of aircraft engine and coordinate system establishing method thereof |
| CN113108738A (en) * | 2021-03-25 | 2021-07-13 | 中国航发南方工业有限公司 | Rotary table of turbine disc mortise three-coordinate measuring machine and fifth axis calibration method |
| WO2023138119A1 (en) * | 2022-01-18 | 2023-07-27 | 成都飞机工业（集团）有限责任公司 | Non-contact photographing hole measurement calibration device and method |
| CN115839670A (en) * | 2022-11-22 | 2023-03-24 | 哈尔滨工业大学 | Large-scale high-speed rotation equipment rotor spherical surface profile measuring device based on multi-dimensional backlight imaging |
| CN116558425A (en) * | 2023-07-12 | 2023-08-08 | 无锡万耐特自动化设备股份公司 | Automatic detection device and detection method for non-contact optical lens of windscreen wiper |
| CN116558425B (en) * | 2023-07-12 | 2023-09-22 | 无锡万耐特自动化设备股份公司 | Automatic detection device and detection method for non-contact optical lens of windscreen wiper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103557802B (en) | 2015-10-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103557802B (en) | A kind of method of non-cpntact measurement space curved surface micro hole diameter and coordinate position | |
| CN102944163B (en) | Device and method for measuring profile tolerance of annular dovetail groove of any axial section | |
| CN108507466B (en) | The method that three-dimensional precise information is obtained using two-dimentional line laser scanner | |
| JP5571007B2 (en) | Sphere shape measuring device | |
| CN111678472B (en) | Error identification method for rotary table of four-axis coordinate measuring machine | |
| CN105444673B (en) | The device and method of center of optical element is determined in rotation translation absolute sense method | |
| CN106017319A (en) | Coordinate transformation tool and method of 3D laser scanning data based on high-precision point measurement | |
| CN104154881B (en) | Measuring method for parallelism error of shaft hole end face of telescope four-way | |
| CN108827187A (en) | A kind of measuring system for workpiece progress measuring three-dimensional profile | |
| CN102151866A (en) | Three-ball-based multistation coordinate unifying method of processing center | |
| Liu et al. | Binocular-vision-based error detection system and identification method for PIGEs of rotary axis in five-axis machine tool | |
| CN109253710B (en) | Calibration method for zero error of A axis of REVO measuring head | |
| CN102944204A (en) | Method for detecting cross-section profile by utilizing two-dimensional measuring machine | |
| CN103292700B (en) | Space general position and orientation measurement standard of machine vision measurement system | |
| Zha et al. | Four-station laser tracer-based geometric error measurement of rotary table | |
| CN104596412A (en) | Identification base for complex curved surface high-precision measuring and positioning | |
| Dong et al. | The calibration method of the circle-structured light measurement system for inner surfaces considering systematic errors | |
| CN105627918B (en) | Quickly draw tooling and method in axis hole benchmark scene for precision visual measurement | |
| CN105651147B (en) | It is a kind of measure notch anchor points to perspective plane distance adapter and measurement method | |
| Zou et al. | Extrinsic calibration method for 3D scanning system with four coplanar laser profilers | |
| CN205049111U (en) | Diameter of axle measuring device based on laser displacement sensor | |
| CN117232432A (en) | Blade three-dimensional contour detection system and detection method thereof | |
| Li et al. | A high-speed in situ measuring method for inner dimension inspection | |
| Shao et al. | Calibration method for a vision guiding-based laser-tracking measurement system | |
| CN206556619U (en) | Composite three-dimensional measuring table |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |