CN107152922A - A kind of method of on-position measure annular plane form error - Google Patents
A kind of method of on-position measure annular plane form error Download PDFInfo
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- CN107152922A CN107152922A CN201710298345.3A CN201710298345A CN107152922A CN 107152922 A CN107152922 A CN 107152922A CN 201710298345 A CN201710298345 A CN 201710298345A CN 107152922 A CN107152922 A CN 107152922A
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/20—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring contours or curvatures, e.g. determining profile
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention provides a kind of method of on-position measure annular plane form error, realized based on a kind of large-scale anchor ring form error on-position measure system.On-position measure system includes posture adjustment part, rotating part and measurement part；Posture adjustment part includes posture adjustment platform, posture adjustment motor and pinboard；Rotating part is tried to get to the heart of a matter seat and high accuracy point circular index disk including circular index；Measurement portion point includes clamp of sensor, sensor holder, touch sensor and its corollary equipment.The present invention realizes application of the line-of-sight course on measurement anchor ring flat form error, the algorithm improvement of on-position measure anchor ring flat form error can be realized to line-of-sight course by realizing simultaneously, the on-position measure to anchor ring flat form error can be realized, the part processing duration can be greatly reduced, reduces influence of the multiple clamping for element precision.
Description
Technical field
The invention belongs to flatness error on-position measure method, it can be widely applied to such as aero-engine, centrifugal compressor
The measurement of planeness for the ring-shape accessory equipped etc. Important Project.
Background technology
When machine components are assembled, the form error of assembly interface is extremely important, and form error often influences to connect
Rigidity and assembly precision are touched, in order to accurately control assembly performance, it is necessary to the form error of test part.At present, China is very
High pressure in large-scale annular plane, such as aero-engine, low-pressure turbine shaft are widely present in many Grand Equipments, high pressure is calmed the anger
Substantial amounts of annular plane, the inspection of the assembly problem and form error of these high precision parts are there is in the parts such as machine disk drum
Survey relation is very close, and workpiece tends not to random rotation in assembling process, thus for the dress of these high precision parts
With problem, on-position measure is carried out most important.
Gradually two point method is a kind of important method applied to measuring straightness error, passes through the place to multiple row test data
Reason, can obtain the flatness error of rectangle plane, but its Processing Algorithm can eliminate the not concordant error of transducer probe assembly, but
The support corners error in sensor installation process can not be isolated, while the also more difficult plane applied to narrow planar annular
Spend in error-detecting；Line-of-sight course is gradually the extension of two point method, when detecting flatness error using anchor ring as measurement object,
Because line-of-sight course can separate Initial Alignment Error, thus with higher measurement accuracy, but it may not apply to
Position measurement, i.e., sensor is fixed and make it that workpiece rotates in measurement process, is not suitable for the shape in assembling process
Position tolerance measurement.
This paper presents a kind of on-position measure method based on line-of-sight course, this method can be realized in assembling process to large-scale
The flatness error measurement of annular plane, and the influence of zero error can be effectively eliminated by algorithm, show with important
Sincere justice.
The content of the invention
For having the component assembly problem of large-scale annular plane in aero-engine, the present invention is based on line-of-sight course measurement
The general principle of annular plane, a kind of incorporation engineering practice, it is proposed that survey in place for annular plane flatness error
Amount method.
The technical scheme of this method：
A kind of anchor ring flatness on-line system, the flatness applied to aero-engine reel and cone wall end face is surveyed
Measuring appratus structure includes posture adjustment part, rotating part and measurement part；
Posture adjustment part includes posture adjustment platform 5, posture adjustment platform motor 4 and pinboard 6；Posture adjustment platform 5 is used to adjust along z-axis and x-axis
Angle of revolution, is controlled by posture adjustment platform motor 4, and posture adjustment platform motor 4 is by controller control；Z-axis is perpendicular to the plane of posture adjustment platform 5
Axle, adjustment angle is 0 °~360 °；X-axis is the axle of the vertical direction of principal axis of posture adjustment platform motor 4, and adjustment angle is -30 °~30 °；Switching
The lower surface of plate 6 is connected on the table top of posture adjustment platform 5, and its upper surface side is connected with circular index and tried to get to the heart of a matter seat 7；
Rotating part is tried to get to the heart of a matter seat 7 and a point circular index disk 1 including circular index；Circular index tries to get to the heart of a matter the main body of seat 7 for cube
Frame structure, both side surface and bottom surface are provided with T-slot, and T-slot is connected with pinboard 6 by bolt and nut；Circular index
Gear on disk 1 and the circular index gear on seat 7 of trying to get to the heart of a matter are engaged；Circular index tries to get to the heart of a matter the top surface of seat 7 provided with spanner, and spanner is forward
Pull, drive circular index disk 1 to travel forward, nibble gear on circular index disk 1 and the circular index gear on seat 7 of trying to get to the heart of a matter
Close, can rotate required angle manually, spanner is pulled to returning, and circular index disk 1 is taken off with the gear that circular index is tried to get to the heart of a matter on seat 7
From engagement, and it is stuck with fixation；
The minimum angle of revolution of circular index disk 1 be 1 °, rotating accuracy be provided with 10``, the table top of circular index disk 1 it is T-shaped
Groove and centre bore；The side of circular index disk 1 is positioned by the heart axle of centre bore and clamp of sensor 10, passes through T-slot and bolt
Nut 2, which coordinates, to be fixed, and opposite side is engaged by gear and the circular index gear on seat 7 of trying to get to the heart of a matter；
Measurement portion point includes clamp of sensor 10, sensor holder 9 and touch sensor 8；Clamp of sensor 10 is
Disc structure, is disposed with 4 groups of sensor jacks altogether on clamp of sensor 10, wherein two groups are single sensor jack, quantity
For 3, another two groups are double sensor jack, often arrange 3, totally 6；Often the center hub position of row's sensor jack is set to
0 °, 90 °, 180 ° and 270 °, the sensor jack of central sensor jack both sides and the angle at center are 10 °；Own in often arranging
Sensor jack is equal with the distance in the center of circle, unequal between row and row, the distance of center circle of sensor jack and clamp of sensor 10
From for 100mm~300mm；Single sensor jack is used for measuring the form error on flange face on centerline hole, double sensing
Device jack is used for the form error of measured hole radially opposite sides；A sensor holder 9 is installed in each sensor jack to be used for
Fixed touch sensor 8；The data that touch sensor 8 is measured are by RS232 bus transfers to host computer, in host computer
Write Labview programs and carry out digital independent and analysis.
Because on-position measure to be realized, i.e. workpiece are motionless, measuring instrument is rotated, and now measuring instrument and anchor ring is coaxial
The influence spent to measured value is very big, and the equipment can realize the leveling to axiality so that on-position measure circular planes degree is reliable
Property is greatly improved.
Beneficial effects of the present invention：The present invention realizes application of the line-of-sight course on measurement anchor ring flat form error,
The algorithm improvement of on-position measure anchor ring flat form error can be realized to line-of-sight course by realizing simultaneously, can be realized to annulus
The on-position measure of facial plane form error, can greatly reduce the part processing duration, reduce multiple clamping for element precision
Influence.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is sensor leveling schematic diagram.
Fig. 3 is measurement error schematic diagram.
In figure：1 circular index disk；2 bolt and nuts；3T type bolt and nuts；4 posture adjustment platform motors；5 posture adjustment platforms；6 pinboards；7
Circular index is tried to get to the heart of a matter seat；8 touch sensors；9 sensor holders；10 clamp of sensor；11 spanners.
Embodiment
Below in conjunction with accompanying drawing and technical scheme, the embodiment of the present invention is further illustrated.
Embodiment
A kind of method of on-position measure annular plane form error, step is as follows：
Step A：Five touch sensors 8 are at least installed on clamp of sensor 10, wherein, three touch sensors
8V1、V2And V3It is measurement sensor, is mountable in any socket hole in any group, but be necessarily mounted at same row；The
Four touch sensor 8V4It is installed on and V2During angle is 90 ° of jack, and positioned at center hub；5th contact-sensing
Device 8V5It is installed on and V2During angle is 90 ° of jack, and positioned at center hub, itself and V4Symmetrically；Wherein V1、V2Folded central angle
For α1, V2、V3Folded central angle is α2, wherein；α1=α2=α, andN is the measurement point quantity on part to be measured；
Step B：If the inclination angle of part to be measured and the axle of the card of clamp of sensor 10 is θ, corner during measurement is α every time, if
V1, V2, V3Three touch sensors 8 are respectively d in the distance of y-axis direction and part to be measured1, d2, d3, due to alignment error it is difficult to
Complete leveling, therefore have unevenness error delta1=d2-d1, δ2=d3-d1, then for k-th of measurement point, have：
δ′1=δ1+Rθ{cos(kα)-cos[(k+1)α]} (1)
δ′2=δ2+Rθ{cos(kα)-cos[(k+2)α]} (2)
Above formula shows：Workpiece is in on-position measure, zero error δ '1With δ '2Not definite value, but corner α function, but
We can make δ by leveling process1＞ ＞ R θ, thus δ ' can be approximately considered1=δ1, δ '2=δ2；
To V2, V4, V5Three gauge heads of touch sensor 8 carry out leveling processing, and leveling is realized by posture adjustment platform 5, posture adjustment platform 5
With two frees degree, the rotation in x-axis direction and z-axis direction can be adjusted by posture adjustment platform motor 4；Z-axis direction is adjusted first
Rotation so that V4And V5The reading of two sensorses is identical, then adjusts the rotation in x-axis direction so that V2Reading and V4And V5's
Reading is identical；
Step C：After Levelling operation, V2, V4, V5Determine a basal plane；V1, V3Two touch sensors 8 and this basal plane
Certain sensor alignment error is had in the y-axis direction, and the reduction that can be tried one's best by adjusting clamp of sensor 10 repeatedly is poor
Value, alignment error δ1、δ2It is difficult to which leveling completely, leveling can only make δ1、δ2Reduce as far as possible；
Step D：Complete after step B and step C, read V1, V2, V3Numerical value simultaneously records the first group number-reading；Then pull forward
Spanner 11 rotates circular index disk 1, and circular index disk 1 is rotated clockwise or counterclockwise afterwards, and corner is α, is pulled backward
Wrench 11 fixes circular index disk 1, records the second group number-reading, by that analogy, reads N group number-readings；
If S (k) is the component of part kth to be measured time measurement point flatness error in the y-axis direction, R (k) is clamp of sensor
The component of 10 kth time measurement point on the y axis, tan γ (k) are angles caused by clamp of sensor plane error.V1(k)、V2(k)、
V3(k) it is respectively sensor V1、V2、V3Same group of measured value, Δ l be two adjacent measurement points between interval, then have：
V1(k)=S (k)+R (k) (3)
V2(k)=S (k+1)+R (k)+Δ ltan γ (k) (4)
V3(k)=S (k+2) Δ ltan γ of+R (k)+2 (k) (5)
R (1)=0 is made, then has S (1)=V1(1), S (2)=V2(1), so as to try to achieve recurrence formula：
S (k+2)=V1(k)-2V2(k)+V3(k)-S(k)+2S(k+1) (6)
Have when considering that peace turns the unevenness error caused：
V1(k)=S (k)+R (k) (7)
V2(k)=S (k+ Δ l)+R (k)+Δ ltan γ (k)+δ1 (8)
V3(k)=S (Δs of k+2 Δ l)+R (k)+2 ltan γ (k)+δ2 (9)
It is so as to the error term for obtaining S (k+2) using induction：
Step E：Circular index disk 1 is rotated further after reading N group number-readings, N+1 groups and N+2 group data are read, used
To eliminate initial value error.Because tested surface is annulus, have againTherefore N+1 points and the 1st point coincidence, N+2 points and
2nd point of coincidence, order
A=S (N+2)-S (2), b=S (N+1)-S (1), (11)
δ can be solved1And δ2Value be respectively：
Solve, δ1And δ2In substitution formula (6), the value Δ s (k+2) of S (k+2) error term is can obtain, then error separate formula
For
Claims (1)
1. a kind of a kind of method of on-position measure annular plane form error, it is characterised in that described on-position measure annulus
The method of shape flat form error carries out on-line measurement with a kind of anchor ring flatness on-line system；
Described anchor ring flatness on-line system includes posture adjustment part, rotating part and measurement part；
Posture adjustment part includes posture adjustment platform (5), posture adjustment platform motor (4) and pinboard (6)；Posture adjustment platform (5) is used to adjust along z-axis and x
The angle of revolution of axle, is controlled, posture adjustment platform motor (4) is by controller control by posture adjustment platform motor (4)；Z-axis is perpendicular to posture adjustment platform
(5) axle of plane, adjustment angle is 0 °~360 °；X-axis be vertical posture adjustment platform motor (4) direction of principal axis axle, adjustment angle for-
30 °~30 °；The lower surface of pinboard (6) is connected on posture adjustment platform (5) table top, and its upper surface side is connected with circular index disk
Base (7)；
Rotating part is tried to get to the heart of a matter seat (7) and point circular index disk (1) including circular index；Circular index tries to get to the heart of a matter seat (7) main body for just
Body frame structure, both side surface and bottom surface are provided with T-slot, and T-slot is connected with pinboard (6) by bolt and nut；Revolution
Gear on index dial (1) and the circular index gear on seat (7) of trying to get to the heart of a matter are engaged；Circular index tries to get to the heart of a matter seat (7) top surface provided with pulling
Hand, spanner is pulled forward, drives circular index disk (1) to travel forward, and makes the gear and circular index disk on circular index disk (1)
On base (7) gear engagement, manually rotate needed for angle, spanner to return pull, make circular index disk (1) and circular index disk
Gear on base (7) is disengaged from, and stuck with fixation；
The minimum angle of revolution of circular index disk (1) be 1 °, rotating accuracy be provided with 10``, circular index disk (1) table top it is T-shaped
Groove and centre bore；Circular index disk (1) side is positioned by the heart axle of centre bore and clamp of sensor (10), by T-slot and
Bolt and nut (2), which coordinates, to be fixed, and opposite side is engaged by gear and the circular index gear on seat (7) of trying to get to the heart of a matter；
Measurement portion point includes clamp of sensor (10), sensor holder (9) and touch sensor (8)；Clamp of sensor
(10) it is disc structure, is disposed with 4 groups of sensor jacks altogether on clamp of sensor (10), wherein two groups is single sensor and inserts
Hole, quantity is 3, and another two groups are double sensor jack, often arrange 3, totally 6；Often arrange the center hub position of sensor jack
Install as 0 °, 90 °, 180 ° and 270 °, the sensor jack of central sensor jack both sides and the angle at center are 10 °；Often arrange
Middle all the sensors jack is equal with the distance in the center of circle, unequal between row and row, sensor jack and clamp of sensor (10)
Circle center distance be 100mm~300mm；Single sensor jack is used for measuring the flatness on flange face on centerline hole, double
Arrange the flatness that sensor jack is used for measured hole radially opposite sides；A sensor holder is installed in each sensor jack
(9) it is used for fixing touch sensor (8)；The data of touch sensor (8) measurement are by RS232 bus transfers to upper
Machine, Labview programs are write in host computer and carry out digital independent and analysis；
Step is as follows：
Step A：Five touch sensors (8) are at least installed on clamp of sensor (10), wherein, three touch sensors
(8)V1、V2And V3It is measurement sensor, is installed in any socket hole in any group, but be necessarily mounted at same row；The
Four touch sensor (8) V4It is installed on and V2During angle is 90 ° of jack, and positioned at center hub；5th contact is passed
Sensor (8) V5It is installed on and V2During angle is 90 ° of jack, and positioned at center hub, itself and V4Symmetrically；Wherein V1、V2Folded circle
Heart angle is α1, V2、V3Folded central angle is α2, wherein：α1=α2=α, andN is the measurement point quantity on part to be measured；
Step B：If the inclination angle of part to be measured and the axle of clamp of sensor (10) card is θ, corner during measurement is α every time, if V1,
V2, V3Three touch sensors (8) are respectively d in the distance of y-axis direction and part to be measured1, d2, d3, due to alignment error it is difficult to
Complete leveling, therefore have unevenness error delta1=d2-d1, δ2=d3-d1, then for k-th of measurement point, have：
δ1'=δ1+Rθ{cos(kα)-cos[(k+1)α]} (1)
δ2'=δ2+Rθ{cos(kα)-cos[(k+2)α]} (2)
Above formula shows：Part to be measured is in on-position measure, zero error δ1' and δ2' not definite value, but corner α function, pass through
Leveling process makes δ1>>R θ, it is thus regarded that δ1'=δ1, δ2'=δ2；
To V2, V4, V5Three touch sensor (8) gauge heads carry out leveling processing, and leveling is realized by posture adjustment platform (5), posture adjustment platform
(5) there are two frees degree, the rotation in x-axis direction and z-axis direction is adjusted by posture adjustment platform motor (4)；Z-axis direction is adjusted first
Rotation so that V4And V5The reading of two sensorses is identical, then adjusts the rotation in x-axis direction so that V2Reading and V4And V5's
Reading is identical；
Step C：After Levelling operation, V2, V4, V5Determine a basal plane；V1, V3Two touch sensors (8) are with this basal plane in y
There is alignment error on direction of principal axis, reduce difference to try one's best by adjusting clamp of sensor (10) repeatedly, make δ1、δ2Subtract as far as possible
It is small；
Step D：Complete after step B and step C, read V1, V2, V3Numerical value simultaneously records the first group number-reading；Then spanner is pulled forward
(11) rotate circular index disk (1), circular index disk (1) is rotated clockwise or counterclockwise afterwards, corner is α, is pulled backward
Spanner (11) makes circular index disk (1) fixed, records the second group number-reading, by that analogy, reads N group number-readings；
If S (k) is the component of part kth to be measured time measurement point flatness error in the y-axis direction, R (k) is clamp of sensor (10)
The component of kth time measurement point on the y axis, tan γ (k) are angles caused by clamp of sensor plane error；V1(k)、V2(k)、V3
(k) it is respectively sensor V1、V2、V3Same group of measured value, Δ l be two adjacent measurement points between interval, then have：
V1(k)=S (k)+R (k) (3)
V2(k)=S (k+1)+R (k)+Δ ltan γ (k) (4)
V3(k)=S (k+2) Δ ltan γ of+R (k)+2 (k) (5)
R (1)=0 is made, then has S (1)=V1(1), S (2)=V2(1), so as to try to achieve recurrence formula：
S (k+2)=V1(k)-2V2(k)+V3(k)-S(k)+2S(k+1) (6)
Have when considering that peace turns the unevenness error caused：
V1(k)=S (k)+R (k) (7)
V2(k)=S (k+ Δ l)+R (k)+Δ ltan γ (k)+δ1 (8)
V3(k)=S (Δs of k+2 Δ l)+R (k)+2 ltan γ (k)+δ2 (9)
Using induction, so that the error term for obtaining S (k+2) is：
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2
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| CN201710298345.3A CN107152922B (en) | 2017-05-03 | 2017-05-03 | A kind of method of on-position measure annular plane form error |
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| CN108061532A (en) * | 2017-12-17 | 2018-05-22 | 胡长悦 | One kind is based on the formula roundness error separation device and method that is synchronized with the movement |
| CN108153234A (en) * | 2018-01-30 | 2018-06-12 | 中国工程物理研究院机械制造工艺研究所 | The full degree of freedom accuracy detecting device of lathe linear motion run mode |
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| WO2018201340A1 (en) * | 2017-05-03 | 2018-11-08 | 大连理工大学 | In-situ method for measuring shape error in flat ring surface |
| CN111189379A (en) * | 2020-01-14 | 2020-05-22 | 大连理工大学 | Inner cavity surface roughness in-situ detection method based on double-point rotational friction |
| CN114001632A (en) * | 2021-11-02 | 2022-02-01 | 中国科学院光电技术研究所 | Flatness detection device and detection method for large ultra-precise annular plane |
| CN117596536A (en) * | 2024-01-18 | 2024-02-23 | 杭州爱华仪器有限公司 | Device and method for switching incident angle during microphone frequency weighting test |
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| CN108240790A (en) * | 2016-12-27 | 2018-07-03 | 襄阳爱默思智能检测装备有限公司 | A kind of turbine blade plane degree method for fast measuring |
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| WO2018201337A1 (en) * | 2017-05-03 | 2018-11-08 | 大连理工大学 | In-situ system for measuring shape error in large ring surface |
| WO2018201340A1 (en) * | 2017-05-03 | 2018-11-08 | 大连理工大学 | In-situ method for measuring shape error in flat ring surface |
| CN108061532A (en) * | 2017-12-17 | 2018-05-22 | 胡长悦 | One kind is based on the formula roundness error separation device and method that is synchronized with the movement |
| CN108036751A (en) * | 2017-12-17 | 2018-05-15 | 胡长悦 | Based on the formula roundness error separation device and method that is synchronized with the movement |
| CN108153234A (en) * | 2018-01-30 | 2018-06-12 | 中国工程物理研究院机械制造工艺研究所 | The full degree of freedom accuracy detecting device of lathe linear motion run mode |
| CN108153234B (en) * | 2018-01-30 | 2023-08-04 | 中国工程物理研究院机械制造工艺研究所 | Full-freedom degree precision detection device for linear motion running state of machine tool |
| CN111189379A (en) * | 2020-01-14 | 2020-05-22 | 大连理工大学 | Inner cavity surface roughness in-situ detection method based on double-point rotational friction |
| CN111189379B (en) * | 2020-01-14 | 2021-01-12 | 大连理工大学 | Inner cavity surface roughness in-situ detection method based on double-point rotational friction |
| CN114001632A (en) * | 2021-11-02 | 2022-02-01 | 中国科学院光电技术研究所 | Flatness detection device and detection method for large ultra-precise annular plane |
| CN114001632B (en) * | 2021-11-02 | 2023-09-19 | 中国科学院光电技术研究所 | Flatness detection device and detection method for large ultra-precise annular plane |
| CN117596536A (en) * | 2024-01-18 | 2024-02-23 | 杭州爱华仪器有限公司 | Device and method for switching incident angle during microphone frequency weighting test |
| CN117596536B (en) * | 2024-01-18 | 2024-04-09 | 杭州爱华仪器有限公司 | Device and method for switching incident angle during microphone frequency weighting test |
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