CN108036698A - A kind of blade profile precision feeler system - Google Patents
A kind of blade profile precision feeler system Download PDFInfo
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- CN108036698A CN108036698A CN201711358673.4A CN201711358673A CN108036698A CN 108036698 A CN108036698 A CN 108036698A CN 201711358673 A CN201711358673 A CN 201711358673A CN 108036698 A CN108036698 A CN 108036698A
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- sensor
- path planning
- measurement
- type face
- pinboard
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/20—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a kind of blade profile precision feeler system, belongs to blade profile Technology of Precision Measurement field.The gauge head system is based on synchronous planning measurement thought design, is made of path planning sensor, type face accurate measurement sensor, three-axis accurate adjustment slide unit, pinboard, pinboard, pinboard and telemetry circuit etc..Wherein, telemetry circuit is integrated in the inside of Blade measuring platform, is responsible for path planning sensor, the collection of type face accurate measurement sensor measurement data and the adjustment and control of three-axis accurate adjustment slide unit.The shortcomings that gauge head system has taken into full account blade profile feature, overcome the above-mentioned prior art well, has the advantages that high accuracy, high efficiency, exempts from shape；Simple in structure, highly reliable, installation and the system integration are convenient；Measurement and the synchronous progress of planning, and be not required to input hypothesis data and be used for path planning, substantially increase efficiency and the flexibility of measurement.
Description
Technical field
The invention belongs to blade profile Technology of Precision Measurement field, more particularly to a kind of blade profile precision feeler system.
Background technology
Gauge head is the important composition component of Blade measuring and process unit, its measurement accuracy and working performance to improving blade
Processing quality is of great significance.
Currently used Blade measuring gauge head can be divided into contact and contactless two class according to principle difference, wherein contacting
Formula gauge head is divided into touch trigger probe and scanning probe again.Touch trigger probe has the advantages that simple in structure, high-precision, is earliest
Gauge head system applied to blade amount instrument.But limited by operation principle, touch trigger probe measurement efficiency is low, can not realize blade
High speed, full information measurement；Scanning probe measurement efficiency has a distinct increment.But scanning probe is complicated, is manufactured into
This height, be easy to cause workpiece surface scuffing, and there are dead angle for measurement；Contactless gauge head is generally surveyed using optical method
Amount, have the advantages that dynamic response soon, there is no measuring force, can be integrated in manufacture system and realize on-line measurement.But algorithm is answered
It is miscellaneous, Project Realization difficulty is big, and such gauge head by the external influence factors such as the shape characteristic of testee, surface reflection case compared with
More, measurement accuracy need to be further improved.
By analysis it is not difficult to find that current blade profile, which measures gauge head, respectively advantage and disadvantage.Existing main problem has：①
The contradiction of precision and efficiency can not be taken into account, field level, high accuracy, the demand of quick Blade measuring can not be adapted to；2. needed before measurement
Substantial amounts of preparation is done, such as posture accurate adjustment, gross data input, the very flexible of gauge head, and measurement constraints is more.
For main problem existing for current blade profile measurement gauge head, it is proposed that a kind of high accuracy, exempt from shape gauge head system
The technical solution of system.The essence of the gauge head is the composite probe based on synchronous planning measurement thought design, mainly by path planning
Sensor and type face accurate measurement sensor composition.The gauge head need not input the situation of blade theoretical model data and posture accurate adjustment
Under, it is automatic to carry out path planning and synchronously complete the collection of blade surface data.Measuring point data collection is all complete near 0 point
Into can greatly limit error of tilt, improve the precision of measurement.The gauge head has high accuracy, high efficiency, exempts from the spies such as shape
Point.
The content of the invention
The present invention proposes a kind of blade profile precision feeler system.The gauge head system is based on synchronous planning measurement thought and sets
Meter, by path planning sensor 1, type face accurate measurement sensor 2, three-axis accurate adjustment slide unit 3, pinboard 4, pinboard 5, pinboard
6 and the grade of telemetry circuit 7 composition, gauge head system global structure is as shown in Figure 1.Wherein, telemetry circuit 7 is integrated in Blade measuring platform
Inside, be responsible for path planning sensor 1, the collection of 2 measurement data of type face accurate measurement sensor and three-axis accurate adjustment slide unit 3
Adjustment and control, telemetry circuit 7 and the relation of gauge head system are as shown in Figure 2.The gauge head system has taken into full account blade profile spy
Point, the shortcomings that overcoming the above-mentioned prior art well, has the advantages that high accuracy, high efficiency, exempts from shape.
The technical solution adopted by the present invention is as follows：
A kind of blade profile precision feeler system, path planning sensor 1 are optical non-contact displacement sensor, work
Distance 50mm, measurement range -15mm~+15mm.The measurement result of path planning sensor 1 is used for path planning, sampling policy
Analysis and Geometric Shape Recognition.Path planning sensor 1 adjusts 301 phase of slide unit of slide unit 3 by pinboard a4 with three-axis accurate
Even.0 facula position of sensor 1 is planned by 301 adjusts path of slide unit.Type face accurate measurement sensor 2 is optical non-contact
Displacement sensor, operating distance 42mm, measurement range -1mm~+1mm.The path planning obtained according to path planning sensor 1
And sampling policy, complete the accurate measurement of blade profile.Type face accurate measurement sensor 2 is screwed on pinboard b5；With
In the three-axis accurate that path planning sensor 1, the adjustment of 2 relative position of type face accurate measurement sensor and accurate mathematical relational model are established
Adjust slide unit 3.Three-axis accurate adjustment slide unit 3 is equipped with slide unit 301 and base 302.Base 302 is fixed on by pinboard c6 to be turned
On fishplate bar b5；For the pinboard b5 being connected with Blade measuring platform.Pinboard b5 is screwed in Blade measuring platform
Three axis slide units on, realize the connection and installation of gauge head system and measuring table；For electric between gauge head system and measuring table
The telemetry circuit 7 of signal interaction, telemetry circuit 7 are integrated in inside measuring table, and are connected by signal wire with gauge head system, are born
Blame the collection and the adjustment of three shaft positions of sensor signal.
A kind of blade profile precision feeler system, including path planning sensor 1, type face accurate measurement sensor 2, three-axis accurate
Adjust slide unit 3, pinboard a4, pinboard b5, pinboard c6 and telemetry circuit 7.
The slide unit 301 that path planning sensor 1 adjusts slide unit 3 by pinboard a4 with three-axis accurate is connected.Pass through slide unit
301 adjustment, adjusts path plan 0 facula position of sensor 1.Path planning sensor 1 is optical non-contact displacement
Sensor, is responsible for path planning, sampling policy analysis and Geometric Shape Recognition etc..
Type face accurate measurement sensor 2 is optical non-contact displacement sensor, and type face accurate measurement sensor 2 is screwed in
On pinboard b5.The path planning and sampling policy obtained according to path planning sensor 1, completes the accurate survey of blade profile
Amount.
Three-axis accurate adjusts slide unit 3, is fixed on by pinboard c6 on pinboard b5.For path planning sensor 1, type
Accurate measurement sensor 2 relative position in face adjusts and accurate mathematical relational model is established.
Pinboard b5 is screwed on three axis slide units of Blade measuring platform, realizes gauge head system and measuring table
Connection and installation.
Telemetry circuit 7 connects with path planning sensor 1, type face accurate measurement sensor 2 and three-axis accurate adjustment slide unit 3 respectively
Connect, path planning sensor 1, the collection of 2 measurement data of type face accurate measurement sensor and the adjustment and control of three-axis accurate adjustment slide unit 3
System is realized by the control of telemetry circuit 7.
Gauge head system carries out path planning automatically in the case where that need not input blade theoretical model data and posture accurate adjustment
And synchronously complete the collection of blade surface data.The data acquisition of measuring point is all completed near 0 point, is limited error of tilt, is carried
The precision of high measurement.
0 hot spot P1 and P2 of path planning sensor 1 and type face accurate measurement sensor 2 should meet position as shown in Figure 4
Relation.If P1 point coordinates is (X1, Y1, Z1), P2 point coordinates is (X2, Y2, Z2), then both coordinates meet following relation：
X2=X1
Y2=Y1
Z2=Z1-ΔZ
0 hot spot of path planning sensor 1 and type face accurate measurement sensor 2 Z-direction deviation delta Z, according to blade type
The section spacing size in face, by 7 program-controlled adjusting of telemetry circuit.
The type face accurate measurement of type face accurate measurement sensor 2 and the path planning of path planning sensor 1 and sampling policy analysis are same
Step carries out.Gauge head system work principle and process be：First, 1 pair cross-section 1 of path planning sensor carries out planning survey, obtains
To planning coordinates P1Gi(X1Gi,Y1Gi,Z1Gi)；Then, type face accurate measurement sensor 2 is according to planning coordinates P1GiWith sampling policy to cutting
The carry out type face of face 1 accurate measurement, obtains type face accurate measurement coordinate P1Mi(X1Mi,Y1Mi,Z1Mi).While 1 type face accurate measurement of section, path planning
1 pair cross-section 2 of sensor carries out planning survey, obtains planning coordinates P2Gi(X2Gi,Y2Gi,Z2Gi), finishing type face in a synchronous manner
Measurement.Due to measuring and planning synchronous progress, and it is not required to input hypothesis data and is used for path planning, therefore improves the efficiency of measurement
And flexibility.
Type face accurate measurement is all completed near 0 point, and the measurement depth of field is less than 1mm.Error of tilt is limited, improves measurement accuracy.
2 calibration curve of path planning sensor 1 built in telemetry circuit and type face accurate measurement sensor, solves according to calibration curve
Tested displacement of the object plane with respect to 0 point.Gauge head system structure support member is designed using 7075 superduralumins, to improve system
Rigidity, reduces the measurement error that structure trembles and deforms introducing.
Advantages of the present invention：
1st, simple in structure, highly reliable, installation and the system integration are convenient；
2nd, measure and plan synchronous progress, and be not required to input hypothesis data and be used for path planning, substantially increase measurement
Efficiency and flexibility；
3rd, the collection of type face accurate measurement Sensor data is all completed near 0 point, significantly limit error of tilt,
Substantially increase the precision of measurement；
4th, 0 hot spot of path planning sensor 1 and type face accurate measurement sensor 2, can basis in the deviation delta Z of Z-direction
The section spacing size of blade profile, by the program-controlled adjusting of telemetry circuit.Meet the measurement demand of various blade.
Brief description of the drawings
Fig. 1 gauge head system global structure schematic diagrames.
Fig. 2 telemetry circuits and the graph of a relation of gauge head system.
Fig. 3 three-axis accurates adjust slide unit schematic diagram.
0 facula position graph of a relation of Fig. 4 path plannings sensor and type face accurate measurement sensor.
Fig. 5 synchronous planning measuring principle schematic diagrames.It is 1 planning survey of section to scheme a, and figure b is 1 type face accurate measurement of section, section 2
Planning survey.
Fig. 6 path planning transducer calibration curves.
Embodiment
With reference to specific Blade measuring case, the present invention is described in detail：
With reference to shown in Fig. 1-6, a kind of blade profile precision feeler system, including path planning sensor 1, type face accurate measurement pass
Sensor 2, three-axis accurate adjustment slide unit 3, pinboard a4, pinboard b5, pinboard c6 and telemetry circuit 7.
The slide unit 301 that path planning sensor 1 adjusts slide unit 3 by pinboard a4 with three-axis accurate is connected.Pass through slide unit
301 adjustment, adjusts path plan 0 facula position of sensor 1.Path planning sensor 1 is optical non-contact displacement
Sensor, is responsible for path planning, sampling policy analysis and Geometric Shape Recognition etc..
Type face accurate measurement sensor 2 is optical non-contact displacement sensor, and type face accurate measurement sensor 2 is screwed in
On pinboard b5.The path planning and sampling policy obtained according to path planning sensor 1, completes the accurate survey of blade profile
Amount.
Three-axis accurate adjusts slide unit 3, is fixed on by pinboard c6 on pinboard b5.For path planning sensor 1, type
Accurate measurement sensor 2 relative position in face adjusts and accurate mathematical relational model is established.
Pinboard b5 is screwed on three axis slide units of Blade measuring platform, realizes gauge head system and measuring table
Connection and installation.
Telemetry circuit 7 connects with path planning sensor 1, type face accurate measurement sensor 2 and three-axis accurate adjustment slide unit 3 respectively
Connect, path planning sensor 1, the collection of 2 measurement data of type face accurate measurement sensor and the adjustment and control of three-axis accurate adjustment slide unit 3
System is realized by the control of telemetry circuit 7.
0 hot spot of path planning sensor 1 and type face accurate measurement sensor 2 meets position relationship as shown in Figure 4.
Gauge head system carries out path planning automatically in the case where that need not input blade theoretical model data and posture accurate adjustment
And synchronously complete the collection of blade surface data.The data acquisition of measuring point is all completed near 0 point, is limited error of tilt, is carried
The precision of high measurement.
The present invention operation principle be：
During using this gauge head systematic survey blade profile, pinboard b5 is screwed in Blade measuring platform first
Three axis slide units on, complete installation of the gauge head system in measuring instrument.Referring next to Fig. 2, by the electric signal of gauge head system with
The telemetry circuit being integrated in measuring table is connected, and so far, completes installation of the gauge head system on Blade measuring platform.
With reference to Fig. 4,0 facula position relation of accurate adjusts path planning sensor 1 and type face accurate measurement sensor 2.Adjust
Whole step is：Gauge head system is moved forward and backward along Y-axis, using gauge head systematic survey standard gauge block, when type face accurate measurement sensor 2 is surveyed
When value is 0, stop motion, determines the position of P2；The Y knobs of three-axis accurate slide unit are adjusted, when the survey of path planning sensor 1
When value is 0, stops adjustment, determine the positions of P1 in the Y direction；Replace standard gauge block with CCD facula measurement instrument, and make P2 into
As in the center of CCD facula measurement instrument；Gauge head system moves downward Δ Z along Z axis so that P1 points appear in the survey of CCD hot spots
Measure instrument visual field.X, Z knob of three-axis accurate slide unit are adjusted, hot spot is returned to measuring instrument center.Determine P1 in X and Z-direction
On position.So far, the adjustment of 2 position relationships of P1 and P2 is completed.
Synchronous planning measures blade profile.The principle and process of measurement be：1 pair cross-section 1 of path planning sensor is into professional etiquette
Measurement is drawn, obtains planning coordinates P1Gi(X1Gi,Y1Gi,Z1Gi)；Type face accurate measurement sensor 2 is according to planning coordinates P1GiPair cross-section 1 carries out
Type face accurate measurement, obtains type face accurate measurement coordinate P1Mi(X1Mi,Y1Mi,Z1Mi).While 1 type face accurate measurement of section, path planning sensor 1
Pair cross-section 2 carries out planning survey, obtains planning coordinates P2Gi(X2Gi,Y2Gi,Z2Gi), the measurement in finishing type face in a synchronous manner.
Due to measuring and planning synchronous progress, and it is not required to input hypothesis data and is used for path planning, therefore substantially increases
The efficiency of measurement and flexibility.In addition, type face accurate measurement is all completed near 0 point, the precision of measurement is substantially increased.
Claims (8)
- A kind of 1. blade profile precision feeler system, it is characterised in that：Sensed including path planning sensor (1), type face accurate measurement Device (2), three-axis accurate adjustment slide unit (3), pinboard a (4), pinboard b (5), pinboard c (6) and telemetry circuit (7)；The slide unit 301 that path planning sensor (1) adjusts slide unit (3) by pinboard a (4) with three-axis accurate is connected；Pass through cunning The adjustment of platform 301,0 facula position of adjusts path planning sensor (1)；Path planning sensor (1) is optical touchless Formula displacement sensor, is responsible for path planning, sampling policy analysis and Geometric Shape Recognition etc.；Type face accurate measurement sensor (2) is optical non-contact displacement sensor, and type face accurate measurement sensor (2) is screwed in On pinboard b (5)；The path planning and sampling policy obtained according to path planning sensor (1), completes the precision of blade profile Measurement；Three-axis accurate adjustment slide unit (3), is fixed on pinboard b (5) by pinboard c (6)；For path planning sensor (1), the adjustment of type face accurate measurement sensor (2) relative position and accurate mathematical relational model are established；Pinboard b (5) is screwed on three axis slide units of Blade measuring platform, realizes gauge head system and measuring table Connection and installation；Telemetry circuit (7) adjusts slide unit with path planning sensor (1), type face accurate measurement sensor (2) and three-axis accurate respectively (3) connect, path planning sensor (1), the collection of type face accurate measurement sensor (2) measurement data and three-axis accurate adjustment slide unit (3) adjustment and control is realized by the control of telemetry circuit (7)；For gauge head system in the case where that need not input blade theoretical model data and posture accurate adjustment, automatic progress path planning is simultaneously same Step completes the collection of blade surface data；The data acquisition of measuring point is all completed near 0 point, limits error of tilt, is improved and is surveyed The precision of amount；0 hot spot P1 and P2 of path planning sensor (1) and type face accurate measurement sensor (2) should meet position as shown in Figure 4 Relation；If P1 point coordinates is (X1, Y1, Z1), P2 point coordinates is (X2, Y2, Z2), then both coordinates meet following relation：X2=X1Y2=Y1Z2=Z1-ΔZ0 hot spot of path planning sensor (1) and type face accurate measurement sensor (2) Z-direction deviation delta Z, according to blade type The section spacing size in face, by telemetry circuit (7) program-controlled adjusting；The type face accurate measurement of type face accurate measurement sensor (2) and the path planning of path planning sensor (1) and sampling policy analysis are same Step carries out；Gauge head system work principle and process be：First, path planning sensor (1) pair cross-section 1 carries out planning survey, Obtain planning coordinates P1Gi(X1Gi,Y1Gi,Z1Gi)；Then, type face accurate measurement sensor (2) is according to planning coordinates P1GiAnd sampling policy The carry out type of pair cross-section 1 face accurate measurement, obtains type face accurate measurement coordinate P1Mi(X1Mi,Y1Mi,Z1Mi)；While 1 type face accurate measurement of section, path Plan that sensor (1) pair cross-section 2 carries out planning survey, obtain planning coordinates P2Gi(X2Gi,Y2Gi,Z2Gi), it is complete in a synchronous manner It is molded planar survey；Due to measuring and planning synchronous progress, and it is not required to input hypothesis data and is used for path planning, therefore improves measurement Efficiency and flexibility.
- A kind of 2. blade profile precision feeler system according to claim 1, it is characterised in that：Type face accurate measurement is all 0 Point is nearby completed, and the measurement depth of field is less than 1mm.
- A kind of 3. blade profile precision feeler system according to claim 1, it is characterised in that：Path built in telemetry circuit Plan sensor (1) and type face accurate measurement sensor (2) calibration curve, tested object plane position 0 point opposite is solved according to calibration curve Move size；Gauge head system structure support member is designed using 7075 superduralumins, to improve the rigidity of system, reduce structure tremble and Deform the measurement error introduced.
- A kind of 4. blade profile precision feeler system according to claim 1, it is characterised in that：A kind of blade profile is accurate Gauge head system, path planning sensor (1) are optical non-contact displacement sensor, operating distance 50mm, measurement range -15mm ~+15mm；The measurement result of path planning sensor (1) is used for path planning, sampling policy analysis and Geometric Shape Recognition；Road The slide unit 301 that footpath planning sensor (1) adjusts slide unit (3) by pinboard a (4) with three-axis accurate is connected；Adjusted by slide unit 301 0 facula position of whole path planning sensor (1).
- A kind of 5. blade profile precision feeler system according to claim 1, it is characterised in that：Type face accurate measurement sensor (2) it is optical non-contact displacement sensor, operating distance 42mm, measurement range -1mm~+1mm；Sensed according to path planning The path planning and sampling policy that device (1) obtains, complete the accurate measurement of blade profile；Type face accurate measurement sensor (2) passes through spiral shell Silk is fixed on pinboard b (5).
- A kind of 6. blade profile precision feeler system according to claim 1, it is characterised in that：Sensed for path planning The three-axis accurate adjustment slide unit that device (1), the adjustment of type face accurate measurement sensor (2) relative position and accurate mathematical relational model are established (3)；Three-axis accurate adjustment slide unit (3) is equipped with slide unit 301 and base 302；Base 302 is fixed on switching by pinboard c (6) On plate b (5).
- A kind of 7. blade profile precision feeler system according to claim 1, it is characterised in that：For being put down with Blade measuring The pinboard b (5) that platform is connected；Pinboard b (5) is screwed on three axis slide units of Blade measuring platform, realizes gauge head The connection and installation of system and measuring table.
- A kind of 8. blade profile precision feeler system according to claim 1, it is characterised in that：For gauge head system with surveying The telemetry circuit (7) that electric signal interacts between amount platform, telemetry circuit (7) is integrated in inside measuring table, and passes through signal wire It is connected with gauge head system, is responsible for the collection and the adjustment of three shaft positions of sensor signal.
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| CN201711358673.4A CN108036698B (en) | 2017-12-17 | 2017-12-17 | A kind of blade profile precision feeler system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711358673.4A CN108036698B (en) | 2017-12-17 | 2017-12-17 | A kind of blade profile precision feeler system |
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| CN108036698A true CN108036698A (en) | 2018-05-15 |
| CN108036698B CN108036698B (en) | 2019-06-28 |
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| CN101149253A (en) * | 2007-10-16 | 2008-03-26 | 浙江大学 | Unknown free-form surface self-adaptive measuring method based on exploration method and measuring head device |
| WO2008087503A1 (en) * | 2007-01-18 | 2008-07-24 | Costanzo Perico | An assembly for analysing a three-dimensional surface of a workpiece and machine comprising such an assembly |
| CN104316014A (en) * | 2014-10-21 | 2015-01-28 | 西安交通大学 | Rapid measurement route planning method of sections of blades of aviation engine |
| CN104515478A (en) * | 2014-12-11 | 2015-04-15 | 华中科技大学 | Automatic three-dimensional measuring method and automatic three-dimensional measuring system for high-precision blade of aviation engine |
| CN106643551A (en) * | 2016-12-07 | 2017-05-10 | 苏州笛卡测试技术有限公司 | Blade shape rapid scanning device and method |
-
2017
- 2017-12-17 CN CN201711358673.4A patent/CN108036698B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101000499A (en) * | 2006-12-18 | 2007-07-18 | 浙江大学 | Contour machining method and system based on multi-sensor integral measuring |
| WO2008087503A1 (en) * | 2007-01-18 | 2008-07-24 | Costanzo Perico | An assembly for analysing a three-dimensional surface of a workpiece and machine comprising such an assembly |
| CN101149253A (en) * | 2007-10-16 | 2008-03-26 | 浙江大学 | Unknown free-form surface self-adaptive measuring method based on exploration method and measuring head device |
| CN104316014A (en) * | 2014-10-21 | 2015-01-28 | 西安交通大学 | Rapid measurement route planning method of sections of blades of aviation engine |
| CN104515478A (en) * | 2014-12-11 | 2015-04-15 | 华中科技大学 | Automatic three-dimensional measuring method and automatic three-dimensional measuring system for high-precision blade of aviation engine |
| CN106643551A (en) * | 2016-12-07 | 2017-05-10 | 苏州笛卡测试技术有限公司 | Blade shape rapid scanning device and method |
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| CN108036698B (en) | 2019-06-28 |
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