CN107655412A - A kind of ballbar length caliberating device and application method with self calibrating function - Google Patents
A kind of ballbar length caliberating device and application method with self calibrating function Download PDFInfo
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- CN107655412A CN107655412A CN201710763969.8A CN201710763969A CN107655412A CN 107655412 A CN107655412 A CN 107655412A CN 201710763969 A CN201710763969 A CN 201710763969A CN 107655412 A CN107655412 A CN 107655412A
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- ball
- kinematic mount
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- air
- ball kinematic
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
Abstract
The invention discloses a kind of ballbar length caliberating device and application method with self calibrating function, it is difficult to solve existing caliberating device equipment adjustment, or the problem of long club can not be demarcated.The present invention includes the mobile platform on air-float guide rail, fixed platform positioned at air-float guide rail one end, positioned at the laser interferometer of the other end, formed positioned at the part of fixed platform four of air-float guide rail side, fixed platform positioned at air-float guide rail side in measurement process is fixed, according to the length for being calibrated club, its position and fixation are adjusted before measuring, three ball kinematic mounts are separately installed with mobile platform and two fixed platforms, three ball kinematic mounts are used to support club to be calibrated, the three ball kinematic mounts in the fixed platform of air-float guide rail one end are used for the self-calibration of realization device with three ball kinematic mounts on mobile platform, the three ball kinematic mounts in the fixed platform of air-float guide rail side are used to demarcate club with three ball kinematic mounts on mobile platform.
Description
Technical field
The present invention relates to dimensional measurement technical field, specifically a kind of ballbar length caliberating device with self calibrating function
And application method.
Background technology
Club by two high-precision spheroids and connection two balls club form, the centre of sphere between two balls away from(Hereinafter referred to as
Ballbar length)It is the gauged distance that it is provided, ballbar length precision can reach 0.1 micron at present.In industrial standard, ball
Bar both ends end sphere diameter is usually 25.4 millimeters, and sphere diameter is that 38.1 millimeters and 50.8 millimeters of club also has application.
The length range of common club also may customize the longer length of processing at 100 millimeters to 3000 millimeters.
Club is that the one kind for calibrating coordinate measuring machine length-measuring error commonly uses one-dimensional standard component, in calibration laser tracking
Instrument, laser scanner and industrial photogrammetry instrument etc. also have application.Utilizing club calibration coordinate measuring machine length
Before measurement error, it is necessary to high-precision calibrating is carried out to ballbar length, to ensure the calibration accuracy of coordinate measuring machine.
Ballbar length demarcation can use high precision coordinate measuring instrument or its special calibrating device.The seat of full accuracy at present
The measurement accuracy of co-ordinate measuring machine is (0.3+L/1000) micron, and its measurement range is smaller, can not meet the long club of high accuracy
Calibration request;In terms of instrumentation development, in terms of the document published, mainly there is what China National Measuring Science Research Inst. developed
Special two coordinate measuring machine, National Institute of Standards and Technology respectively with University of Florida and Clemson University cooperation
Two kinds of special gauging machines of research.It is in place of the shortcomings of the prior art:
Special two coordinate measuring machine that China National Measuring Science Research Inst. develops needs artificial aiming, and measurement accuracy depends on operator
The technical ability of member;National Institute of Standards and Technology and the special gauging machine of University of Florida's cooperation research and development are only used for marking
Club of the measured length within 1 meter;National Institute of Standards and Technology with and the special gauging machine of Clemson University can
For club of the calibrated length within 3 meters, but the mounting and adjusting of this instrument is extremely difficult, and Abbe mistake be present
Difference, have no that National Institute of Standards and Technology actually uses at present.
The content of the invention is it is an object of the invention to provide a kind of with the ballbar length caliberating device of self calibrating function and user
Method, to solve prior art club caliberating device equipment adjustment difficulty, or the problem of long club can not be demarcated.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of ballbar length caliberating device with self calibrating function, it is characterised in that:Including long side air supporting in left-right direction
Guide rail, left position is fixed with laser interferometer adjustment head on air-float guide rail, is provided with laser interferometer adjustment head sharp
Optical interferometer, right end position is fixed with the first y-z two-freedom fine adjustment stages, the fine setting of the first y-z two-freedoms on air-float guide rail
One or three ball kinematic mount is installed on platform, installed on air-float guide rail close to laser interferometer adjustment head position by microscope group
Frame is provided with spectroscope and speculum group, on air-float guide rail positioned at microscope group mounting bracket and the first y-z two-freedoms fine adjustment stage it
Between be also slidably fitted with air supporting balladeur train, right side is fixed with the 2nd y-z two-freedom fine adjustment stages on air supporting balladeur train, on air supporting balladeur train
Left side is fixed with the 3rd y-z two-freedom fine adjustment stages, wherein speculum is installed in the 3rd y-z two-freedom fine adjustment stages,
And speculum is provided with towards the spectroscope and speculum group on microscope group mounting bracket in the 2nd y-z two-freedom fine adjustment stages
Two or three ball kinematic mounts, the two or three ball kinematic mount are oppositely arranged with the one or three ball kinematic mount, are additionally provided with front of air-float guide rail
In the same plane perpendicular to the support base of air-float guide rail, support base rear end extends to air-float guide rail, and the is fixed with support base
Three or three ball kinematic mounts, first, second 3 ball kinematic mounts are in sustained height.
A kind of described ballbar length caliberating device with self calibrating function, it is characterised in that:The support base is solid
Fixed platform, adjustable three or the three ball kinematic mount in position is installed in fixed platform;
Or support base is made up of balladeur train and rail plate, wherein rail plate is arranged in front of air-float guide rail, and balladeur train slides peace
On rail plate, the three or three ball kinematic mount is fixed on balladeur train by fixed platform;
, can be according to treating by adjustable three or the three ball kinematic mount in position, or the three or the three ball kinematic mount with sledge movements
The position that ballbar length adjusts the three or three ball kinematic mount is demarcated, so as to demarcate the length of existing various length clubs.
A kind of described ballbar length caliberating device with self calibrating function, it is characterised in that:The air-float guide rail, branch
It is overall respectively by vibration isolation support in different support to support seat.
A kind of described ballbar length caliberating device with self calibrating function, it is characterised in that:One or three ball motion branch
Seat is finely adjusted by the first y-z two-freedoms fine adjustment stage along y, z direction, ensures that straight-line pass where laser beam is placed on first
The centre of sphere of club end to be measured spheroid in three ball kinematic mounts;
Two or three ball kinematic mount is finely adjusted by position by the 2nd y-z two-freedoms fine adjustment stage along y, z direction, ensures laser
Straight-line pass where beam is placed on the centre of sphere of the club end to be measured spheroid in the two or three ball kinematic mount.
A kind of described ballbar length caliberating device with self calibrating function, it is characterised in that:Described spectroscope and
Interfere microscope group by microscope group mounting bracket adjustment can be in the z-direction position and the adjustable angle around z directions, the 3rd y-z two-freedoms it is micro-
Position of the speculum along y, z direction on leveling platform can be finely adjusted so that the laser beam that laser interferometer is sent is through spectroscope
Be divided and all the way laser after speculum reflects with another way laser interference.
A kind of described ballbar length caliberating device with self calibrating function, it is characterised in that:Abbe error theoretical value
It is zero.
A kind of application method of the ballbar length caliberating device with self calibrating function, it is characterised in that:Including following step
Suddenly:
(1), two unknown lengths of selection club carry out self-calibration, one end spheroid of the club of first unknown lengths is placed
In the one or three ball kinematic mount, movable air-float balladeur train is to correct position and by the other end ball of the club of first unknown lengths
Body is placed in the two or three ball kinematic mount, by laser interferometer indicating value zero setting;
(2), remove the first ball bar, and one end spheroid of the club of second unknown lengths is placed on the one or three ball motion branch
On seat, movable air-float balladeur train is placed on the two or three ball to correct position and by the other end spheroid of the club of second unknown lengths
In kinematic mount, laser interferometer indicating value is the difference l of the ballbar length of two unknown lengths;
(3), the three or three ball kinematic mount adjusted to correct position and fixation, again by the one of the club of first unknown lengths
End spheroid is placed in the three or three ball kinematic mount, and movable air-float balladeur train is to the correct position close to laser interferometer and by first
The other end spheroid of the club of root unknown lengths is placed in the two or three ball kinematic mount, recording laser interferometer indicating value a;
The club for removing first unknown lengths is placed on one end in the two or three ball kinematic mount, and movable air-float balladeur train is to remote
The other end spheroid of first ball bar is simultaneously placed on the two or three ball kinematic mount, recording laser by the correct position of laser interferometer
Interferometer indicating value d;
The club of first unknown lengths is removed, one end spheroid of the second ball bar is placed in the three or three ball kinematic mount,
The other end spheroid of second ball bar to the correct position close to laser interferometer and is placed on the two or three by movable air-float balladeur train
In ball kinematic mount, recording laser interferometer indicating value b;
Then one end that the second ball bar is placed in the two or three ball kinematic mount is removed, movable air-float balladeur train is done to away from laser
The other end spheroid of second ball bar is simultaneously placed on the two or three ball kinematic mount, recording laser interferometer by the correct position of interferometer
Indicating value c;
According to the difference l of the ballbar length of triangle relation, laser interferometer indicating value a, b, c, d and two unknown lengths, calculating is put
Put straight where the laser beam that the centre of sphere to the laser interferometer of the free kick boom end spheroid in the three or three ball kinematic mount is sent
Linear distance y;
(4), one end spheroid of club to be calibrated is placed in the three or three ball kinematic mount, movable air-float balladeur train is to close to laser
The other end spheroid of club to be calibrated is simultaneously placed in the two or three ball kinematic mount by the correct position of interferometer, and recording laser is done
Interferometer indicating value, then removes one end that club to be calibrated is placed in the two or three ball kinematic mount, and movable air-float balladeur train is to remote
The other end spheroid of club to be calibrated is simultaneously placed on the two or three ball kinematic mount, recording laser by the correct position of laser interferometer
Interferometer indicating value, said process in no particular order, according to step(3)In the air line distance y that is calculated and triangle relation calculate
Ballbar length to be calibrated, to reduce error, the step is repeated, takes ballbar length multiple measurement results average value conduct to be calibrated
Ballbar length nominal value to be calibrated.
The application method of the described ballbar length caliberating device with self calibrating function, it is characterised in that:For marking certainly
The club of two fixed unknown lengths, to ensure stated accuracy, wherein a root long degree is more than ballbar length to be calibrated, another root long
Degree is less than or equal to ballbar length to be calibrated.
The application method of the described ballbar length caliberating device with self calibrating function, it is characterised in that:In self-calibration
During and demarcate during club to be calibrated, the club end spheroid being placed in first, second, third 3 ball kinematic mounts
Same sphere or nominal value identical spheroid should be used respectively.
Compared with prior art, the invention has the advantages that:
The present invention need to be only adjusted to parallel with air-float guide rail in the laser beam for sending laser interferometer, and laser interferometer is sent out
The laser beam mirror that is split directly reflects the laser beam gone out all the way after spectroscope is divided, and another way laser beam transmission crosses spectroscope again
With on the basis of another way laser interference, the two or three ball kinematic mount on air supporting balladeur train and air supporting are led after speculum reflects
The position of the one or three fixed ball kinematic mount of one section of rail is finely adjusted so that straight-line pass where laser beam is placed on two three
The centre of sphere of club both ends spheroid in ball kinematic mount, the phase for the three or three ball kinematic mount being placed in front of air-float guide rail
Position can be obtained by self-calibration, its position does not influence club stated accuracy.Apparatus of the present invention mounting and adjusting is simple, easily
Realize, it is easy to use without Abbe error, and the club of random length can be demarcated in theory.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention;
Fig. 2 is another structural representation of the present invention;
Fig. 3 is the principle schematic of the length difference of the present invention two unknown lengths clubs of measurement;
Fig. 4 is the principle schematic that the present invention realizes self-calibration using two ballbar length differences;
Fig. 5 is the principle schematic of present invention demarcation ballbar length.
Label in figure:1st, laser interferometer, 2, laser interferometer adjustment head, 3, spectroscope and interference microscope group, 4, microscope group
Mounting bracket, 5, air-float guide rail, 6, air supporting balladeur train, the 7, the 3rd y-z two-freedom fine adjustment stages, 8, speculum, the 9, the 2nd 3 ball fortune
Dynamic bearing, the 10, the 2nd y-z two-freedom fine adjustment stages, the 11, the first y-z two-freedom fine adjustment stages, the motion of the 12, the 1st ball
Bearing, the 13, the 3rd 3 ball kinematic mount, 14, fixed platform, 15, support, 16, balladeur train, 17, rail plate, 18, support.
Embodiment
Embodiment one:Referring to accompanying drawing 1, Fig. 1 is schematic structural view of the invention, and only explanation is of the invention in a schematic way
Basic structure, therefore it only shows the composition relevant with the present invention and design diagram.
A kind of ballbar length caliberating device with self calibrating function described in present embodiment include laser interferometer 1,
Laser interferometer adjustment head 2, spectroscope and interference microscope group 3, air-float guide rail 5, air supporting balladeur train 6, the fine setting of the 3rd y-z two-freedoms
Platform 7, speculum 8, the two or three ball kinematic mount 9, the 2nd y-z two-freedoms fine adjustment stage 10, the fine setting of the first y-z two-freedoms
Platform 11, the one or three ball kinematic mount 12, the three or three ball kinematic mount 13, fixed platform 14, support 15, laser interferometer adjustment
Head 2 is fixed on air-float guide rail 5, and spectroscope and speculum group 3 are arranged on air-float guide rail 5 by microscope group mounting bracket 4, reflection
Mirror 8 is arranged on air supporting balladeur train 6 by the 3rd y-z two-freedoms fine adjustment stage 7, and the two or three ball kinematic mount 9 passes through the 2nd y-z
Two-freedom fine adjustment stage 10 is arranged on air supporting balladeur train 6, and the one or three ball kinematic mount 12 is finely tuned by the first y-z two-freedoms
Platform 11 is arranged on air-float guide rail 5, and the screwed hole of regular distribution in fixed platform 14, the three or three ball kinematic mount 13 utilizes
Screwed hole is fixed in fixed platform 14, fixed platform 14 by vibration isolation support be arranged on support 15 on, air-float guide rail 5 by every
Support of shaking is arranged on support 15.
Present embodiment has the technical effect that:According to ballbar length to be calibrated, the three or three ball kinematic mount 13 can be adjusted
In the fixed thread hole site of fixed platform 14, so as to adjust the position of three ball kinematic mounts, existing various length clubs are realized
Demarcation.
Embodiment two:Referring to accompanying drawing 2, Fig. 2 is another structural representation of the present invention, is only said in a schematic way
Bright basic structure of the invention, therefore it only shows the composition relevant with the present invention and design diagram.
A kind of ballbar length caliberating device and application method with self calibrating function described in present embodiment include swashing
Optical interferometer 1, laser interferometer adjustment head 2, spectroscope and interference microscope group 3, air-float guide rail 5, air supporting balladeur train 6, the 3rd y-z two
Free degree fine adjustment stage 7, speculum 8, the two or three ball kinematic mount 9, the 2nd y-z two-freedoms fine adjustment stage 10, the first y-z two
Free degree fine adjustment stage 11, the one or three ball kinematic mount 12, the three or three ball kinematic mount 13, fixed platform 14, support 15, balladeur train
16th, rail plate 17, support 18, laser interferometer adjustment head 2 are fixed on air-float guide rail 5, and spectroscope and speculum group 3 are logical
Microscope group mounting bracket 4 is crossed on air-float guide rail 5, speculum 8 is arranged on air supporting by the 3rd y-z two-freedoms fine adjustment stage 7
On balladeur train 6, the two or three ball kinematic mount 9 is arranged on air supporting balladeur train 6 by the 2nd y-z two-freedoms fine adjustment stage 10, and first
Three ball kinematic mounts 12 are arranged on air-float guide rail 5 by the first y-z two-freedoms fine adjustment stage 11, the three or three ball kinematic mount
13 are fixed in fixed platform 14, and fixed platform 14 is arranged on balladeur train 16 by vibration isolation support, and rail plate 17 is arranged on branch
On frame 15, air-float guide rail 5 is installed on mount 18 by vibration isolation support.
Present embodiment has the technical effect that:According to ballbar length to be calibrated, balladeur train 16 can be adjusted in rail plate 17
Position and be fixed, so as to adjust the position of auxiliary platform and three ball kinematic mounts mounted thereto, realize existing various
The demarcation of length club.
Operation principle:
The present invention carries out comprising the following steps that for ballbar length demarcation:
Step 1: referring to accompanying drawing 3, Fig. 3 is the principle schematic of the length difference of the present invention two unknown lengths clubs of measurement, according to treating
The substantial distance for demarcating club selects two unknown lengths clubs, to ensure stated accuracy, wherein a root long degree is more than to be calibrated
Ballbar length, another root long degree are less than or equal to ballbar length to be calibrated, one end spheroid of first unknown lengths club are put
Put in the one or three ball kinematic mount 12, movable air-float balladeur train 6 is to correct position and by the another of first unknown lengths club
End spheroid is placed in the two or three ball kinematic mount 9, by the indicating value zero setting of laser interferometer 1, then removes the first ball bar, and will
One end spheroid of second root unknown lengths club is placed in the one or three ball kinematic mount 12, and movable air-float balladeur train 6 is to suitable
The other end spheroid of second unknown lengths club is simultaneously placed in the two or three ball kinematic mount 9 by position, and laser interferometer 1 is shown
It is worth for the difference l of two ball pole lengths;
Step 2: referring to accompanying drawing 4, Fig. 4 is the principle schematic that the present invention realizes self-calibration using two ballbar length differences.By the 3rd
Three ball kinematic mounts 13 are adjusted to correct position and fixation, and one end spheroid of the first ball bar in step 1 is placed on into the 3rd
In three ball kinematic mounts 13, movable air-float balladeur train 6 is to the correct position close to laser interferometer 1 and by the another of the first ball bar
End spheroid is placed in the two or three ball kinematic mount 9, the indicating value a of recording laser interferometer 1, is then removed the first ball bar and is placed on
One end in two or three ball kinematic mount 9, movable air-float balladeur train 6 is to the correct position away from laser interferometer 1 and by first
The other end spheroid of club is placed on the two or three ball kinematic mount 9, the indicating value d of recording laser interferometer 1, by second in step 1
One end spheroid of ball bar is placed in the three or three ball kinematic mount 13, movable air-float balladeur train 6 to the conjunction close to laser interferometer 1
Right position is put and the other end spheroid of the second club is placed in the two or three ball kinematic mount 9, the indicating value b of recording laser interferometer 1,
Then the second ball bar is placed on one end in the two or three ball kinematic mount 9, and movable air-float balladeur train 6 is to away from laser interferometer 1
Correct position and the other end spheroid of the second ball bar is placed on the two or three ball kinematic mount 9, recording laser interferometer 1 shows
Value c, said process in no particular order, according to the difference l of triangle relation, laser interferometer 1 indicating value a, b, c, d and two ball pole lengths
Calculate x, y value of the free kick boom end spheroid centre of sphere;
Step 3: referring to accompanying drawing 5, Fig. 5 is the principle schematic of present invention demarcation ballbar length.By one end ball of club to be calibrated
Body is placed in the three or three ball kinematic mount 13, and movable air-float balladeur train 6 is to the correct position close to laser interferometer 1 and by the ball
The other end spheroid of bar is placed in the two or three ball kinematic mount 9, the indicating value of recording laser interferometer 1l 1 , then remove the club
The one end being placed in the two or three ball kinematic mount 9, movable air-float balladeur train 6 to the correct position away from laser interferometer 1 simultaneously will
The other end spheroid of the club is placed on the two or three ball kinematic mount 9, the indicating value of recording laser interferometer 1l 2 , said process regardless of
Successively, ballbar length to be calibrated is calculated according to the y values and triangle relation being calculated in step 2, to reduce error, repeated
The step, ballbar length multiple measurement results average value to be calibrated is taken as ballbar length nominal value to be calibrated.
Embodiment of above is merely to illustrate the present invention, rather than limitation of the present invention, the common skill about technical field
Art personnel, without departing from the spirit and scope of the present invention, it can also make a variety of changes and modification, thus it is all etc.
Same technical scheme falls within the protection category of the present invention.
Claims (9)
- A kind of 1. ballbar length caliberating device with self calibrating function, it is characterised in that:Including long side gas in left-right direction Guide rail is floated, left position is fixed with laser interferometer adjustment head on air-float guide rail, is provided with laser interferometer adjustment head Laser interferometer, right end position is fixed with the first y-z two-freedom fine adjustment stages on air-float guide rail, and the first y-z two-freedoms are micro- One or three ball kinematic mount is installed on leveling platform, pacified on air-float guide rail close to laser interferometer adjustment head position by microscope group Shelve and spectroscope and speculum group are installed, microscope group mounting bracket and the first y-z two-freedom fine adjustment stages are located on air-float guide rail Between be also slidably fitted with air supporting balladeur train, right side is fixed with the 2nd y-z two-freedom fine adjustment stages, air supporting balladeur train on air supporting balladeur train Upper left side is fixed with the 3rd y-z two-freedom fine adjustment stages, wherein being provided with reflection in the 3rd y-z two-freedom fine adjustment stages Mirror, and speculum is provided with the 2nd y-z two-freedom fine adjustment stages towards the spectroscope and speculum group on microscope group mounting bracket Two or three ball kinematic mount, the two or three ball kinematic mount are oppositely arranged with the one or three ball kinematic mount, are also set in front of air-float guide rail Have and extend in the same plane perpendicular to the support base of air-float guide rail, support base rear end to air-float guide rail, be fixed with support base Three or three ball kinematic mount, first, second 3 ball kinematic mounts are in sustained height.
- A kind of 2. ballbar length caliberating device with self calibrating function according to claim 1, it is characterised in that:It is described Support base is fixed platform, and adjustable three or the three ball kinematic mount in position is provided with fixed platform;Or support base is made up of balladeur train and rail plate, wherein rail plate is arranged in front of air-float guide rail, and balladeur train slides peace On rail plate, the three or three ball kinematic mount is fixed on balladeur train by fixed platform;, can be according to treating by adjustable three or the three ball kinematic mount in position, or the three or the three ball kinematic mount with sledge movements The position that ballbar length adjusts the three or three ball kinematic mount is demarcated, so as to demarcate the length of existing various length clubs.
- A kind of 3. ballbar length caliberating device with self calibrating function according to claim 1, it is characterised in that:It is described Air-float guide rail, support base are integrally arranged in different support by vibration isolation support respectively.
- A kind of 4. ballbar length caliberating device with self calibrating function according to claim 1, it is characterised in that:The One or three ball kinematic mounts are finely adjusted by the first y-z two-freedoms fine adjustment stage along y, z direction, ensure that straight line where laser beam leads to Cross the centre of sphere for the club end to be measured spheroid being placed in the one or three ball kinematic mount;Two or three ball kinematic mount is finely adjusted by position by the 2nd y-z two-freedoms fine adjustment stage along y, z direction, ensures laser Straight-line pass where beam is placed on the centre of sphere of the club end to be measured spheroid in the two or three ball kinematic mount.
- A kind of 5. ballbar length caliberating device with self calibrating function according to claim 1, it is characterised in that:It is described Spectroscope and interference microscope group by microscope group mounting bracket adjustment can be in the z-direction position and the adjustable angle around z directions, the 3rd y-z Position of the speculum along y, z direction in two-freedom fine adjustment stage can be finely adjusted so that the laser that laser interferometer is sent Beam through spectroscope be divided and all the way laser after speculum reflects with another way laser interference.
- A kind of 6. ballbar length caliberating device with self calibrating function according to claim 1, it is characterised in that:Abbe Error theory value is zero.
- A kind of 7. application method of the ballbar length caliberating device with self calibrating function described in claim 1, it is characterised in that: Comprise the following steps:(1), two unknown lengths of selection club carry out self-calibration, one end spheroid of the club of first unknown lengths is placed In the one or three ball kinematic mount, movable air-float balladeur train is to correct position and by the other end ball of the club of first unknown lengths Body is placed in the two or three ball kinematic mount, by laser interferometer indicating value zero setting;(2), remove the first ball bar, and one end spheroid of the club of second unknown lengths is placed on the one or three ball motion branch On seat, movable air-float balladeur train is placed on the two or three ball to correct position and by the other end spheroid of the club of second unknown lengths In kinematic mount, laser interferometer indicating value is the difference l of the ballbar length of two unknown lengths;(3), the three or three ball kinematic mount adjusted to correct position and fixation, again by the one of the club of first unknown lengths End spheroid is placed in the three or three ball kinematic mount, and movable air-float balladeur train is to the correct position close to laser interferometer and by first The other end spheroid of the club of root unknown lengths is placed in the two or three ball kinematic mount, recording laser interferometer indicating value a;The club for removing first unknown lengths is placed on one end in the two or three ball kinematic mount, and movable air-float balladeur train is to remote The other end spheroid of first ball bar is simultaneously placed on the two or three ball kinematic mount, recording laser by the correct position of laser interferometer Interferometer indicating value d;The club of first unknown lengths is removed, one end spheroid of the second ball bar is placed in the three or three ball kinematic mount, The other end spheroid of second ball bar to the correct position close to laser interferometer and is placed on the two or three by movable air-float balladeur train In ball kinematic mount, recording laser interferometer indicating value b;Then one end that the second ball bar is placed in the two or three ball kinematic mount is removed, movable air-float balladeur train is done to away from laser The other end spheroid of second ball bar is simultaneously placed on the two or three ball kinematic mount, recording laser interferometer by the correct position of interferometer Indicating value c;According to the difference l of the ballbar length of triangle relation, laser interferometer indicating value a, b, c, d and two unknown lengths, calculating is put Put straight where the laser beam that the centre of sphere to the laser interferometer of the free kick boom end spheroid in the three or three ball kinematic mount is sent Linear distance y;(4), one end spheroid of club to be calibrated is placed in the three or three ball kinematic mount, movable air-float balladeur train is to close to laser The other end spheroid of club to be calibrated is simultaneously placed in the two or three ball kinematic mount by the correct position of interferometer, and recording laser is done Interferometer indicating value, then removes one end that club to be calibrated is placed in the two or three ball kinematic mount, and movable air-float balladeur train is to remote The other end spheroid of club to be calibrated is simultaneously placed on the two or three ball kinematic mount, recording laser by the correct position of laser interferometer Interferometer indicating value, said process in no particular order, according to step(3)In the air line distance y that is calculated and triangle relation calculate Ballbar length to be calibrated, to reduce error, the step is repeated, takes ballbar length multiple measurement results average value conduct to be calibrated Ballbar length nominal value to be calibrated.
- 8. the application method of the ballbar length caliberating device according to claim 7 with self calibrating function, its feature exist In:For the club of two unknown lengths of self-calibration, to ensure stated accuracy, wherein a root long degree is grown more than club to be calibrated Degree, another root long degree are less than or equal to ballbar length to be calibrated.
- 9. the application method of the ballbar length caliberating device according to claim 7 with self calibrating function, its feature exist In:During self-calibration and demarcate during club to be calibrated, be placed in first, second, third 3 ball kinematic mounts Club end spheroid should use same sphere or nominal value identical spheroid respectively.
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109115826A (en) * | 2018-08-24 | 2019-01-01 | 合肥工业大学 | A kind of expansion indicator and application method |
CN109115826B (en) * | 2018-08-24 | 2021-05-18 | 合肥工业大学 | Thermal expansion measuring instrument and using method |
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CN112053405A (en) * | 2020-08-21 | 2020-12-08 | 合肥工业大学 | Deviation calibration and external reference correction method for optical axis and rotating shaft of follow-up vision system |
CN112053405B (en) * | 2020-08-21 | 2022-09-13 | 合肥工业大学 | Deviation calibration and external parameter correction method for optical axis and rotating shaft of follow-up vision system |
CN114858063A (en) * | 2022-06-15 | 2022-08-05 | 合肥工业大学 | Baseball center distance measuring device with self-initialization function and using method thereof |
CN114858063B (en) * | 2022-06-15 | 2024-02-13 | 合肥工业大学 | Ball center distance measuring device with self-initializing function and using method thereof |
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