CN108444419A - Realize three coordinate arrangement on-line measurement systems and method - Google Patents
Realize three coordinate arrangement on-line measurement systems and method Download PDFInfo
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- CN108444419A CN108444419A CN201810108659.7A CN201810108659A CN108444419A CN 108444419 A CN108444419 A CN 108444419A CN 201810108659 A CN201810108659 A CN 201810108659A CN 108444419 A CN108444419 A CN 108444419A
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- dimensional coordinates
- coordinate
- measurement equipment
- coordinates measurement
- measurement
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Classifications
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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
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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
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
- G01B11/005—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates coordinate measuring machines
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The present invention relates to a kind of three coordinate arrangement on-line measurement systems of realization and methods, belong to the technical field of white body precision measure.The three coordinate arrangement on-line measurement system of realization of the present invention includes white body measuring table, the Body in white frame assembly being arranged on white body measuring table;At least three standard balls and N number of three-dimensional coordinates measurement equipment, the N are the natural number more than or equal to 2;N number of three-dimensional coordinates measurement equipment is by fitting under same coordinate, the technical advantage of different three-dimensional coordinates measurement equipments can be played, the task of measuring can be synchronized between different three-dimensional coordinates measurement equipments, so as to realize all effects for measuring feature and full-scale monitoring of white body.
Description
Technical field
The present invention relates to the technical fields of white body precision measure, it is more particularly related to which a kind of realizing that three sit
Marking device on-line measurement system and method.
Background technology
In the prior art, each large-scale automobile main frame maker is that monitoring Body in white frame vehicle precision purchases different type three
Coordinate measurment instrument, common type are portable mainly including double cantilever three coordinate measuring machines, portable multi-joint three-coordinates measuring machine
Formula laser tracker etc., and select distinct device according to the parts of required measurement and the different of feature.However, different three
Coordinate measurment instrument has the defect because of design itself, leads to not disposably complete to measure the required feature of large parts
Element, such as:1. double cantilever three coordinate measuring machines:It is usually applied to major main engine plants' Body in white frame precision measure, however it is white
In body frame partially obscured characteristic element because Body in white frame and measuring arm interference can not measure;2. portable more passes
Measuring instrument is saved, the measurement of white body metal plate parts and frock clamp is usually applied to, is measured to Body in white frame
When, because of design reasons itself, brachium effective distance need to carry out multiple coordinate conversion, could complete white body usually within 3m
The measurement task of skeleton;However coordinate conversion accuracy grade can decline every time, measurement error accumulation causes measurement data to be lost
Very, it is unfavorable for Accuracy Matching class Resolving probiems.3. portable laser tracker:It is usually applied to Body in white frame and large-scale inspection
The measurement of tool, frock clamp does not allow disconnected light, therefore be also required to carry out multiple coordinate conversion (accuracy class in measurement process
Decline, measurement error accumulation) measurement task could be completed.
Invention content
In order to solve above-mentioned technical problem in the prior art, the purpose of the present invention is to provide a kind of three coordinates of realization to set
Standby on-line measurement system and method.
In order to solve to invent the technical problem and realize goal of the invention, present invention employs following technical schemes:
Realize that three coordinate arrangement on-line measurement systems, including white body measuring table, setting measure flat in the white body
Body in white frame assembly on platform;Characterized by further comprising:At least three standard balls and N number of three-dimensional coordinates measurement equipment, the N
For the natural number more than or equal to 2;
The first three-dimensional coordinates measurement equipment is fixed on the white body measuring table, is set using first three-dimensional coordinates measurement
It is standby to establish parts coordinate system;
At least three standard ball is fixed on the white body measuring table;
The sphere center position of fixed standard ball is measured under parts coordinate system, and records numerical value;
The n-th three-dimensional coordinates measurement equipment is fixed on the white body measuring table, and measures the centre of sphere position of 3 standard balls
It sets, and 3 standard balls are not on same straight line;Natural numbers of the wherein described n between 2~N;
By first three-dimensional coordinates measurement equipment, measured sphere center position is as reference coordinate value;
Using least square fitting method, the coordinate system of the n-th three-dimensional coordinates measurement equipment is established, and make described n-th
The coordinate system of three-dimensional coordinates measurement equipment is overlapped with parts coordinate system, realizes that the n-th three-dimensional coordinates measurement equipment is surveyed with the one or three coordinate
Measure the on-line measurement of equipment.
Wherein, two kinds of three-dimensional coordinates measurement equipments are included at least in N number of three-dimensional coordinates measurement equipment, for example, at least include one
A double cantilever three-dimensional coordinates measurement equipments.A portable multi-joint is also included at least in wherein described N number of three-dimensional coordinates measurement equipment
Measuring apparatus, or include at least a portable laser measuring apparatus.
Arbitrary three standard balls cannot point-blank, other on-line measurement equipment at least need selected three marks
Quasi- ball and in its measurement range.
It should to greatest extent be covered in the measurement stroke range for meeting other on-line measurement equipment three standard ball installation positions
Lid measures characteristic range.
The second aspect of the present invention further relates to a kind of three coordinate arrangement on-line measurement methods of realization, the method includes with
Lower step:
White body measuring table, at least three standard balls and N number of three-dimensional coordinates measurement equipment are provided, the N is more than or equal to 2
Natural number;
Body in white frame assembly to be measured is arranged on white body measuring table;
The first three-dimensional coordinates measurement equipment is fixed on the white body measuring table, is set using first three-dimensional coordinates measurement
It is standby to establish parts coordinate system;
At least three standard ball is fixed on the white body measuring table;
The sphere center position of fixed standard ball is measured under parts coordinate system, and records numerical value;
The n-th three-dimensional coordinates measurement equipment is fixed on the white body measuring table, and measures the centre of sphere position of 3 standard balls
It sets, and 3 standard balls are not on same straight line;Natural numbers of the wherein described n between 2~N;
By first three-dimensional coordinates measurement equipment, measured sphere center position is as reference coordinate value;
Using least square fitting method, the coordinate system of the n-th three-dimensional coordinates measurement equipment is established, and make described n-th
The coordinate system of three-dimensional coordinates measurement equipment is overlapped with parts coordinate system, realizes that the n-th three-dimensional coordinates measurement equipment is surveyed with the one or three coordinate
Measure the on-line measurement of equipment.
Wherein, the N is equal to 2 or 3.
Wherein, two kinds of three-dimensional coordinates measurement equipments are included at least in N number of three-dimensional coordinates measurement equipment, for example, at least include one double
Cantilever three-dimensional coordinates measurement equipment.A portable multi-joint is also included at least in wherein described N number of three-dimensional coordinates measurement equipment to measure
Equipment, or include at least a portable laser measuring apparatus.
Arbitrary three standard balls cannot point-blank, other on-line measurement equipment at least need selected three marks
Quasi- ball and in its measurement range.
It should to greatest extent be covered in the measurement stroke range for meeting other on-line measurement equipment three standard ball installation positions
Lid measures characteristic range.
Compared with the immediate prior art, three coordinate arrangement on-line measurement system of realization of the invention and method have
Following advantageous effect:
The three coordinate arrangement on-line measurement system of realization of the present invention can play the technology of different three-dimensional coordinates measurement equipments
Advantage can synchronize the task of measuring between different three-dimensional coordinates measurement equipments, so as to realize all measurement features of white body
And the effect of full-scale monitoring.
Description of the drawings
Fig. 1 is the structure diagram of the three coordinate arrangement on-line measurement system of realization of embodiment 1.
Fig. 2 is the schematic diagram of the three coordinate arrangement on-line measurement system of realization of embodiment 1.
Fig. 3 is the structure diagram of the three coordinate arrangement on-line measurement system of realization of embodiment 2.
Specific implementation mode
Three coordinate arrangement on-line measurement methods of realization of the present invention are done further below with reference to specific embodiment
Elaboration, to make more complete and clear explanation to technical scheme of the present invention.
Embodiment 1
As shown in Figure 1, the three coordinate arrangement on-line measurement system of realization of the present embodiment, including white body measuring table 10,
The standard ball 30, one of the Body in white frame assembly being arranged on the white body measuring table 20, three three coordinate of double cantilevers is surveyed
Measure equipment 40, a portable laser measuring apparatus 50;Double cantilever three-dimensional coordinates measurement equipments 40 and portable laser are surveyed
The step of measuring online equipment 50 and synchro measure is as follows:
Parts coordinate system is established using double cantilever three-dimensional coordinates measurement equipments 40;Meeting portable laser measuring apparatus 50
Measurement stroke range in, fixed at least three standard ball 30, and should to cover measurement to greatest extent special for the position of 3 standard balls 30
Levy range.
The sphere center position of fixed standard ball 30 is measured under parts coordinate system, and records numerical value;
Portable laser measuring apparatus 50 is fixed on white body measuring table 10, and measures the centre of sphere position of 3 standard balls
It sets, 3 standard balls are not on same straight line;
Using the sphere center position measured by double cantilever three-dimensional coordinates measurement equipments 40 as reference coordinate value;
Using the method that least square method best fit establishes coordinate system, the coordinate of portable laser measuring apparatus 50 is established
System, at this moment the coordinate system of portable laser measuring apparatus 50 is overlapped with parts coordinate system, realizes portable laser measuring apparatus
50 with the on-line measurements of double cantilever three-dimensional coordinates measurement equipments 40.
Embodiment 2
As Figure 2-3, the three coordinate arrangement on-line measurement system of realization of the present embodiment, including white body measuring table
10, the standard ball 30, one of the Body in white frame assembly being arranged on the white body measuring table 20, six three coordinate of double cantilevers
Measuring apparatus 40, a portable laser tracker 50 and a portable multi-joint measuring apparatus 60;One double cantilevers
Three-dimensional coordinates measurement equipment 40 is located on white body measuring table 10, and portable multi-joint measuring apparatus 60 is located at the white body
On the white body measuring table 10 of 20 front end of frame assembly, it is total that portable laser tracker measuring apparatus 50 is located at Body in white frame
At on the measuring table 10 of 20 rear ends, six standard balls 30 be also arranged in respectively 20 front end of Body in white frame assembly and after
End, and arbitrary three is not on same straight line.One double cantilever three-dimensional coordinates measurement equipments 40, one are portable sharp
Optical tracker system measuring apparatus 50 and the step of portable multi-joint measuring apparatus 60 is online and synchro measure, are as follows:
Parts coordinate system is established using double cantilever three-dimensional coordinates measurement equipments 40;
The sphere center position of fixed standard ball 30 is measured under parts coordinate system, and records numerical value;
It fixes portable laser tracker measuring apparatus 50 on white body measuring table 10, and measures 3 standard balls
Sphere center position;
Using the sphere center position measured by double cantilever three-dimensional coordinates measurement equipments 40 as reference coordinate value;
Using the method that least square method best fit establishes coordinate system, portable laser tracker measuring apparatus 50 is established
Coordinate system, and make portable laser tracker measuring apparatus 50 coordinate system overlapped with parts coordinate system, realization just
Take the on-line measurement of formula laser tracker measuring apparatus 50 and double cantilever three-dimensional coordinates measurement equipments 40;
Portable multi-joint measurement is fixed on the white body measuring table 10 of 20 front end of Body in white frame assembly to set
Standby 60, and measure the sphere center position of 3 standard balls;
Using the sphere center position measured by double cantilever three-dimensional coordinates measurement equipments 40 as reference coordinate value;
Using the method that least square method best fit establishes coordinate system, the seat of portable multi-joint measuring apparatus 60 is established
Mark system, and the coordinate system of portable multi-joint measuring apparatus 60 is overlapped with parts coordinate system, realization is portable to close more
Save the on-line measurement of measuring apparatus 60 and double cantilever three-dimensional coordinates measurement equipments 40.
It is final to realize that three measuring apparatus carry out full-scale measurement monitoring to Body in white frame assembly 20 simultaneously.
Company's machine of two kinds and the above high accuracy three coordinate equipment may be implemented in the on-line measurement system of the present invention, can synchronize
High-acruracy survey operation is carried out, is analyzed so as to provide more accurate measurement data for the research and development of white body input;
The system of the present invention can play the advantage of distinct device type, while can be to being measured caused by single equipment design reasons itself
Blind spot (feature being unable to measure) has complementary advantages;So as to play the utilization of three-dimensional coordinates measurement equipment to greatest extent
Rate;And it can realize that a variety of high accuracy three coordinates are carried out at the same time measurement task, avoid the accumulative mistake of system caused by coordinate conversion
Difference and measurement delay, significantly improve working efficiency.The on-line measurement system of the present invention can be widely applied to heavy parts and work
Dress measures, such as:Body in white frame measurement, the measurement of MB wire body positioning accuracies, large-scale cubing, mold etc..
For the ordinary skill in the art, specific embodiment is only exemplarily described the present invention,
Obviously the present invention specific implementation is not subject to the restrictions described above, as long as use the inventive concept and technical scheme of the present invention into
The improvement of capable various unsubstantialities, or it is not improved by the present invention design and technical solution directly apply to other occasions
, within protection scope of the present invention.
Claims (10)
1. a kind of three coordinate arrangement on-line measurement systems of realization, including white body measuring table, setting is measured in the white body
Body in white frame assembly on platform;Characterized by further comprising:At least three standard balls and N number of three-dimensional coordinates measurement equipment, institute
It is the natural number more than or equal to 2 to state N;
The first three-dimensional coordinates measurement equipment is fixed on the white body measuring table, is built using first three-dimensional coordinates measurement equipment
Vertical parts coordinate system;
At least three standard ball is fixed on the white body measuring table;
The sphere center position of fixed standard ball is measured under parts coordinate system, and records numerical value;
The n-th three-dimensional coordinates measurement equipment is fixed on the white body measuring table, and measures the sphere center position of 3 standard balls, and
And 3 standard balls are not on same straight line;Natural numbers of the wherein described n between 2~N;
By first three-dimensional coordinates measurement equipment, measured sphere center position is as reference coordinate value;
Using the method that least square method best fit establishes coordinate system, the coordinate system of the n-th three-dimensional coordinates measurement equipment is established, and
So that the coordinate system of n-th three-dimensional coordinates measurement equipment is overlapped with parts coordinate system, the n-th three-dimensional coordinates measurement equipment of realization and the
The on-line measurement of one three-dimensional coordinates measurement equipment.
2. three coordinate arrangement on-line measurement systems of realization according to claim 1, it is characterised in that:N number of three coordinate
Two kinds of three-dimensional coordinates measurement equipments are included at least in measuring apparatus, and including at least a double cantilever three-dimensional coordinates measurement equipment.
3. three coordinate arrangement on-line measurement systems of realization according to claim 2, it is characterised in that:N number of three coordinate
A portable multi-joint measuring apparatus is also included at least in measuring apparatus, or is set including at least a portable laser measurement
It is standby.
4. three coordinate arrangement on-line measurement systems of realization according to claim 1, it is characterised in that:Arbitrary three standard balls
Not point-blank, three-dimensional coordinates measurement equipment at least selectes three standard balls and in measurement range.
5. three coordinate arrangement on-line measurement systems of realization according to claim 1, it is characterised in that:Three standard ball settings
Position is in the measurement stroke range of three-dimensional coordinates measurement equipment.
6. a kind of three coordinate arrangement on-line measurement methods of realization, the described method comprises the following steps:
White body measuring table, at least three standard balls and N number of three-dimensional coordinates measurement equipment are provided, the N is oneself more than or equal to 2
So number;
Body in white frame assembly to be measured is arranged on white body measuring table;
The first three-dimensional coordinates measurement equipment is fixed on the white body measuring table, is built using first three-dimensional coordinates measurement equipment
Vertical parts coordinate system;
At least three standard ball is fixed on the white body measuring table;
The sphere center position of fixed standard ball is measured under parts coordinate system, and records numerical value;
The n-th three-dimensional coordinates measurement equipment is fixed on the white body measuring table, and measures the sphere center position of 3 standard balls, and
And 3 standard balls are not on same straight line;Natural numbers of the wherein described n between 2~N;
By first three-dimensional coordinates measurement equipment, measured sphere center position is as reference coordinate value;
Using the method that least square method best fit establishes coordinate system, the coordinate system of the n-th three-dimensional coordinates measurement equipment is established, and
So that the coordinate system of n-th three-dimensional coordinates measurement equipment is overlapped with parts coordinate system, the n-th three-dimensional coordinates measurement equipment of realization and the
The on-line measurement of one three-dimensional coordinates measurement equipment.
7. three coordinate arrangement on-line measurement methods of realization according to claim 6, it is characterised in that:N number of three coordinate
Two kinds of three-dimensional coordinates measurement equipments are included at least in measuring apparatus, and including at least a double cantilever three-dimensional coordinates measurement equipment.
8. three coordinate arrangement on-line measurement methods of realization according to claim 6, it is characterised in that:N number of three coordinate
A portable multi-joint measuring apparatus is also included at least in measuring apparatus, or is set including at least a portable laser measurement
It is standby.
9. three coordinate arrangement on-line measurement methods of realization according to claim 6, it is characterised in that:Arbitrary three standard balls
Not point-blank, three-dimensional coordinates measurement equipment at least selectes three standard balls and in measurement range.
10. three coordinate arrangement on-line measurement methods of realization according to claim 6, it is characterised in that:Three standard balls are set
Seated position is in the measurement stroke range of three-dimensional coordinates measurement equipment.
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Cited By (1)
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Application publication date: 20180824 |