CN107504928A - The reference plane of curved surface is coordinated to determine method - Google Patents
The reference plane of curved surface is coordinated to determine method Download PDFInfo
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- CN107504928A CN107504928A CN201710344922.8A CN201710344922A CN107504928A CN 107504928 A CN107504928 A CN 107504928A CN 201710344922 A CN201710344922 A CN 201710344922A CN 107504928 A CN107504928 A CN 107504928A
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000005259 measurement Methods 0.000 claims abstract description 108
- 238000004088 simulation Methods 0.000 claims abstract description 54
- 230000004075 alteration Effects 0.000 claims description 41
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
-
- 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
- G01B21/16—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 distance of clearance between spaced objects
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
This disclosure relates to a kind of reference plane for coordinating curved surface determines method, including：Simulation determines step, simulation reference plane in first cooperation curved surface and the second cooperation curved surface is determined by analogue measurement face difference, the selected step of actual measurement, selected reference face in first cooperation curved surface and the second cooperation curved surface is determined by Entity measurement face difference, it is different cooperation curved surfaces when simulating reference plane from selected reference face, simulation translation first, which coordinates curved surface or the second cooperation curved surface and re-starts simulation, to be determined step and surveys selected step, it is same cooperation curved surface when simulating reference plane with selected reference face, it is determined that simulation reference plane or selected reference face are target fiducials face.The disclosure determines and surveyed the selected form being combined finally to determine reference plane by that will simulate, issuable error in the case of one of which can be eliminated, so as to accurately determine reference plane, be advantageous to the measurement of follow-up face difference, and then be easy to follow-up assembling, detection etc..
Description
Technical field
This disclosure relates to vehicle manufacture field, in particular it relates to which a kind of reference plane for coordinating curved surface determines method.
Background technology
Along with the diversification of social popularity's element, more popular linear structures are applied to new product by vapour shape-designing teacher
In moulding, while in vehicle production manufacture, the progress of the manufacturing process, special equipment manufacture level such as punching press, welding is more complicated
Changeable curved surface embodies and realized on vehicle.
When vehicle component assembles, it is thus necessary to determine that face difference or gap between complex-curved, to be adjusted.So-called face
Difference, it is exactly distance of two curved surfaces in curved surface normal orientation.Generally, when measuring complex-curved face difference, first have to determine
Benchmark or reference plane.However, in selection of datum, Dimension Engineering teacher is often difficult to determine using which curved surface as benchmark, with which
Individual curved surface as measured surface could most accurate finished surface difference or gap measurement.Its reason includes：Coordinate the section of curved surface more
Become, measuring apparatus is placed, and reference plane usable area is small and the face difference measurement data of manual measurement is discrete larger etc..Due to
Upper reason, cause matching effect in kind and measurement data it is inconsistent, matching engineer can not accurate judgement size technologies specification
The reason for (Dimensional Technical Specification, DTS) is overproof, while accurate parts can not be provided
Recommendation on improvement value.
The content of the invention
The purpose of the disclosure is to provide a kind of choosing method of reference plane, and the choosing method of the reference plane can be true exactly
Reference plane is determined, so as to be advantageous to the measurement of follow-up face difference.
To achieve these goals, the disclosure provides a kind of reference plane for coordinating curved surface and determines method, and the reference plane is true
The method of determining includes：Simulation determines step, determines that the first cooperation curved surface and second coordinates in curved surface by analogue measurement face difference
Reference plane is simulated, surveys selected step, determines that the first cooperation curved surface and second coordinates in curved surface by Entity measurement face difference
Selected reference face, when the simulation reference plane from the selected reference face be different cooperation curved surfaces, simulate and translate described first
Coordinate curved surface or the second cooperation curved surface and re-start the simulation and determine step and the selected step of the actual measurement, when described
It is same cooperation curved surface that reference plane, which is simulated, with the selected reference face, determines that the simulation reference plane or the selected reference face are
Target fiducials face.
Alternatively, it is described simulation determine step be included in three-dimensional software create and meanwhile intercept it is described first coordinate curved surface with
Described second coordinates the section of curved surface, and the section coordinates curved surface and second to coordinate the fit clearance of curved surface perpendicular with first,
Analogue measurement face difference obtains in the section.
Alternatively, the simulation determines that step includes：In the section, on the basis of first coordinates curved surface, measurement the
One coordinates curved surface and second to coordinate the first face aberration measurements of curved surface, and on the basis of second coordinates curved surface, measurement first coordinates bent
Face and the second the second face aberration measurements for coordinating curved surface, calculate the first difference of first face aberration measurements and face difference preset value
With the second difference of second face aberration measurements and face difference preset value, when the absolute value of first difference is less than or equal to institute
The absolute value of the second difference is stated, the first cooperation curved surface is determined as simulation reference plane, when the absolute value of first difference is more than institute
The absolute value of the second difference is stated, determines the second cooperation curved surface for simulation reference plane.
Alternatively, the simulation determines that step includes：Multiple sections are created, in each section, with first
On the basis of coordinating curved surface, measurement first coordinates the first face aberration measurements between curved surface and the second cooperation curved surface, coordinates with second
On the basis of curved surface, measurement first coordinates curved surface and second coordinates the second face aberration measurements between curved surface, calculates multiple described the
First face difference average value of one face aberration measurements and the first mean difference of face difference preset value, calculate multiple second face differences and survey
Second face difference average value of value and the second mean difference of face difference preset value, when the absolute value of first mean difference is less than
Or the absolute value equal to second mean difference, the first cooperation curved surface is determined as simulation reference plane, when first mean difference
The absolute value of value is more than the absolute value of second mean difference, determines the second cooperation curved surface for simulation reference plane.
Alternatively, measurement first face aberration measurements include：The point of contact for choosing the described first R angles for coordinating curved surface is the
One point of contact, the first basic point with first point of contact at a distance of the first length on the first cooperation curved surface is chosen, is cut by first
Point and the generation of the first basic point extend to the described second first straight line for coordinating curved surface, choose the described second R angles for coordinating curved surface
Point of contact is the second point of contact, and the vertical range at second point of contact to the first straight line is first face aberration measurements.
Alternatively, measurement second face aberration measurements include：Choose and cut on the second cooperation curved surface with described second
Point extends to described first by second point of contact and second basic point generation and coordinated at a distance of the second basic point of the second length
The second straight line of curved surface, the vertical range at first point of contact to the second straight line is second face aberration measurements.
Alternatively, first length is equal to second length.
Alternatively, avoiding described first coordinates curved surface and described second to coordinate the edge of curved surface to create the section.
Alternatively, the selected step of the actual measurement includes：Using face difference cubing, first is measured on the basis of the first cooperation curved surface
Curved surface and second is coordinated to coordinate the first face difference of curved surface, the cooperation curved surface and second of measurement first on the basis of the second cooperation curved surface
Coordinate the second face difference of curved surface, calculate first face difference and the first deviation of face difference preset value and second face are poor
Value and the second deviation of face difference preset value, when the absolute value of first deviation is less than or equal to second deviation
Absolute value, it is selected reference face to determine the first cooperation curved surface, when the absolute value of first deviation is more than second deviation
The absolute value of value, it is selected reference face to determine the second cooperation curved surface.
Alternatively, the selected step of the actual measurement is using face difference cubing, in multiple positions on the basis of the first cooperation curved surface
The first face difference that measurement first coordinates curved surface and the second cooperation curved surface is put, is surveyed on the basis of the second cooperation curved surface in multiple positions
Flow control one coordinates curved surface and second to coordinate the second face difference of curved surface, calculates the first average and the face of multiple first face differences
First deviation average of poor preset value, calculate multiple second face differences the second average and face difference preset value it is second inclined
Poor average value, when first deviation average absolute value be less than or equal to second deviation average absolute value, really
Fixed first coordinates curved surface to be selected reference face, when the absolute value of first deviation average is more than second deviation average
Absolute value, it is selected reference face to determine the second cooperation curved surface.
The reference plane of the disclosure determines that method determines and surveyed the selected form being combined finally to determine by that will simulate
Reference plane, issuable error in the case of one of which can be eliminated, so as to accurately determine reference plane, after being advantageous to
The measurement of continuous face difference, and then it is easy to follow-up assembling, detection etc..
Other feature and advantage of the disclosure will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is for providing further understanding of the disclosure, and a part for constitution instruction, with following tool
Body embodiment is used to explain the disclosure together, but does not form the limitation to the disclosure.In the accompanying drawings：
Fig. 1 is the flow chart that method is determined according to the reference plane of the cooperation curved surface of disclosure illustrative embodiments；
Fig. 2 is to be determined to simulate the section for determining that step is related in method according to the reference plane of disclosure illustrative embodiments
The schematic diagram of position；
Fig. 3 is to determine in method that simulation determines that step is related to measurement the according to the reference plane of disclosure illustrative embodiments
The schematic diagram of one face aberration measurements and the second face aberration measurements.
Description of reference numerals
1 first coordinates curved surface 2 second to coordinate the section of curved surface 3
The first point of contacts of a1 the second point of contacts of b1 the first basic point a2 the second basic points of b2
C1 first straight line c2 second straight lines
Embodiment
The embodiment of the disclosure is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explained the disclosure, is not limited to the disclosure.
As it was previously stated, when vehicle component assembles, it is thus necessary to determine that face difference or gap between complex-curved, to be adjusted
It is whole.Referring to Fig. 1, to accurately measure face difference, this disclosure relates to a kind of reference plane for coordinating curved surface determines method, the reference plane
The method of determination can include：Simulation determines step, determines that first coordinates curved surface 1 and second to coordinate curved surface by analogue measurement face difference
Simulation reference plane in 2, selected step is surveyed, determine that first coordinates curved surface 1 and second to coordinate curved surface 2 by Entity measurement face difference
In selected reference face, when simulation reference plane from selected reference face be different cooperation curved surfaces, can simulate and translate the first cooperation
Curved surface 1 or second, which coordinates curved surface 2 and re-starts simulation, determines step and selected step two step of actual measurement, when simulation reference plane
Be same cooperation curved surface with selected reference face, determine this it is same cooperation curved surface be target fiducials face, that is, determine simulate reference plane or
Selected reference face is target fiducials face, and the target fiducials face is required reference plane.
Said reference face is determined in method, coordinates curved surface to be primarily referred to as two curved surfaces being engaged in vehicle, for example, as schemed
Shown in 2, the first cooperation curved surface 1 shown is engine hood panel, and second coordinates curved surface 1 to be headlight plate.It is appreciated that the disclosure
In first cooperation curved surface 1 and second coordinate curved surface 2 can be on vehicle any two curved surfaces being engaged or other
The two cooperation curved surfaces that may relate in device or equipment, therefore it is not limited to two shown in Fig. 2 specific cooperation curved surfaces.Described
Simulation is determined in step, such as by drawing first curved surface 1 and second can be coordinated to coordinate curved surface 2 and be measured face between the two
Difference.Specifically, such as foregoing drafting and measurement can be realized in three-dimensional software, but is not limited to the simulation steps.It is selected in actual measurement
In step, selected reference face is determined by Entity measurement face difference, " material object " therein had both referred to the first cooperation curved surface 1 and second and coordinated
Curved surface 2 is two has the physical unit of multiple curved surfaces respectively, while also refers to the entity apparatus used during measuring surface difference, such as face
Poor cubing or face difference instrument etc..In addition, reference plane is determined in method, simulation determines that step is write on before the selected step of actual measurement, but
It is in practical operation, two steps have no sequencing." simulation translation " first cooperation curved surface 1 or second coordinates curved surface 2 to be
Referring to, the direction vector of the curvature portion poor along close the face of the first cooperation curved surface 1 moves the first cooperation curved surface 1, or along second
The direction vector movement second of the curvature portion of the close face difference of curved surface 2 is coordinated to coordinate curved surface 2, thus in " simulation translation " first
Curved surface 1 or second is coordinated to re-start simulation determination step after coordinating curved surface 2.In the selected step of actual measurement is re-started, then
Can be by being measured in diverse location to realize, naturally it is also possible to using other available selected steps of actual measurement, the disclosure
This is not limited.
Method is determined according to said reference face, the disclosure determines and surveyed the selected form being combined come most by that will simulate
Reference plane is determined eventually.Simulation is determined and actual measurement is selected between can reducing and may caused because of measurement error or other factors
Reference plane determines inappropriate problem, so as to accurately determine reference plane, is advantageous to the measurement of follow-up face difference, and then be easy to
Follow-up assembling, detection etc..It will determine that method is elaborated in more detail to reference plane below：
In a specific embodiment, the simulation determines that step can be included in three-dimensional software and creates while intercept first
Curved surface 1 and second is coordinated to coordinate the section 3 of curved surface 2, the section 3 and first coordinates between the cooperation that curved surface 1 and second coordinates curved surface 2
Gap is perpendicular so that analogue measurement face difference can obtain in section 3.According to being actually needed, can coordinate along first bent
Face 1 and second coordinates the fit clearance between curved surface 2 to create one or more sections 3, and multiple sections 3 are preferably along fit clearance etc.
Spacing it is distributed, as shown in Fig. 2 the spacing between section 3 is substantially in 25mm~100mm.In addition, avoid the first cooperation curved surface 1
The edge for coordinating curved surface 2 with second creates section 3, can reduce section 3 as far as possible and not coordinate curved surface 1 and second to coordinate with first
The vertical situation of curved surface 2, such as in the illustrative embodiments described in Fig. 2, two sections 3 close to edge are respectively away from first
Curved surface 1 or second is coordinated to coordinate distance d substantially 4mm~6mm of curved surface.
Such as in the case where creating a section, simulation determines that step can include：In section 3, coordinate with first
On the basis of curved surface 1, measurement first coordinates the first face aberration measurements h of the cooperation curved surface 2 of curved surface 1 and second1, coordinate curved surface with second
On the basis of 2, measurement first coordinates the second face aberration measurements h of the cooperation curved surface 2 of curved surface 1 and second2, calculate the first face aberration measurements
h1With face difference preset value h the first difference DELTA h1(h1- h=Δs h1) and the second face aberration measurements h2With the second of face difference preset value h
Difference DELTA h2(h2- h=Δs h2), as the first difference DELTA h1Absolute value be less than or equal to the second difference DELTA h2Absolute value , Ji ∣ Δs
h1∣≤∣Δh2∣, it may be determined that first coordinates curved surface 1 for simulation reference plane, conversely, as the first difference DELTA h1Absolute value be more than
Second difference DELTA h2Absolute value , Ji ∣ Δs h1∣ ＞ ∣ Δs h2∣, then the second cooperation curved surface 2 can be determined for simulation reference plane.Wherein
It should be noted that face difference preset value h refers to rule of thumb the face difference of gained or the face difference according to as defined in certain specification.Separately
Outside, it is to be understood that according to above-mentioned multilevel iudge, in the first difference DELTA h1Absolute value be equal to the second difference DELTA h2It is absolute
In the case of value, the first cooperation curved surface 1 and second coordinates curved surface 2 it can be assumed that suitably to elect simulation reference plane as, and this is to rear
Continuous assembling, detection etc. have little to no effect.
In the case where creating multiple sections, for example, the simulation determines that step can include：In each section 3, with
On the basis of first coordinates curved surface 1, measurement first coordinates curved surface 1 and second to coordinate the first face aberration measurements h between curved surface 21, with
On the basis of second coordinates curved surface 2, measurement first coordinates curved surface 1 and second to coordinate the second face aberration measurements h between curved surface 22, meter
Calculate multiple first face aberration measurements h1The first face difference average value h1vWith face difference preset value h the first mean difference Δ h1v(h1v-h
=Δ h1v), calculate multiple second face aberration measurements h2The second face difference average value h2vWith face difference preset value h the second mean difference
Δh2v(h2v- h=Δs h2v), as the first mean difference Δ h1vAbsolute value be less than or equal to the second mean difference Δ h2vIt is absolute
Value , Jis ∣ Δs h1v∣≤∣Δh2v∣, it may be determined that first coordinates curved surface 1 for simulation reference plane, as the first mean difference Δ h1vIt is exhausted
Second mean difference Δ h is more than to value2vAbsolute value, determine the second cooperation curved surface 2 for simulation reference plane.Tong Yang , ∣ Δs h1v∣=
∣Δh2vIn the case of ∣, the first cooperation curved surface 1 and second coordinates curved surface 2 it can be assumed that suitably to elect simulation reference plane as.
In the embodiment, pass through the multiple first face aberration measurements h that will be measured1With the second face aberration measurements h2Taken respectively
After average again compared with the difference preset value h of face, it can more precisely complete to simulate the selection of reference plane.
In the above-mentioned embodiment for carrying out simulation and determining step, the first face aberration measurements h is measured1Specific method can be with
Have it is a variety of, as shown in figure 3, this method can include：The point of contact for choosing the first R angles for coordinating curved surface 1 is the first point of contact a1, is chosen
First coordinates the first basic point b1 with the first point of contact a1 at a distance of the first length on curved surface 1, passes through the first point of contact a1 and the first basic point
B1 generates the first straight line c1 for extending to the second cooperation curved surface 2, and the point of contact for choosing the second R angles for coordinating curved surface 2 is the second point of contact
A2, the second point of contact a2 to first straight line c1 vertical range are the first face aberration measurements h1。
Measure the second face aberration measurements h2Specific method can be differently configured from the above method, naturally it is also possible to similarly wrap
Include：Choose second and coordinate the second basic point b2 on curved surface 2 with the second point of contact a2 at a distance of the second length, pass through the second point of contact a2 and the
Two basic point b2 generate the second straight line c2 for extending to the first cooperation curved surface 1, the first point of contact a1 to second straight line c2 vertical range
For the second face aberration measurements h2。
Although the first face aberration measurements h has been described in detail above1With the second face aberration measurements h2Method or process, still
The disclosure should not be limited to this method.Wherein, first coordinates curved surface 1 and second to coordinate the R angles of curved surface 2 to be respectively to cut open
Close to the arc chord angle of the fit clearance in face, the first point of contact a1 is the first arc sections for coordinating close fit clearance in curved surface 1
Divide the point to connect with other parts, similarly, the second point of contact a2 is the second circular arc portion for coordinating close fit clearance in curved surface 2
The point to connect with other parts.As can be seen that the first face aberration measurements h is being measured using above-mentioned similar procedure1It is poor with the second face
Measured value h2In the case of, to determine point, i.e. the first point of contact a1 and the second point of contact a2 positions are true at the R angles point of contact of two cooperation curved surfaces
It is fixed, therefore, determine vertical range size first straight line c1 and second straight line c2 direction then respectively by first length and
Second length determines.Therefore, the first length should be equal to the second length, to ensure the accuracy of measurement.
For the selected step of the actual measurement, can include in a detailed embodiment：Using face difference cubing, with first
Measurement first coordinates curved surface 1 and second to coordinate the first face difference of curved surface 2 on the basis of cooperation curved surface 1, is with the second cooperation curved surface 2
Reference measurement first coordinates curved surface 1 and second to coordinate the second face difference of curved surface 2, calculates the first face difference and face difference preset value
First deviation and the second face difference and the second deviation of face difference preset value, so, when the absolute value of the first deviation is less than
Or the absolute value equal to the second deviation, it is selected reference face to determine the first cooperation curved surface 1, when the absolute value of the first deviation is big
In the absolute value of the second deviation, it is selected reference face to determine the second cooperation curved surface 2.It is similar with simulation determination step, wherein
In the case that the absolute value of first deviation is equal to the absolute value of the second deviation, first coordinates curved surface 1 and second to coordinate curved surface 2
Can be as required selected reference face.
Above-mentioned embodiment is related to single-point actual measurement and selected, and surveying selected step for multiple spot can include：It is poor using face
Cubing, coordinate the first face of the cooperation curved surface 2 of curved surface 1 and second in multiple position measurements first on the basis of the first cooperation curved surface 1
Difference, coordinate the second face of the cooperation curved surface 2 of curved surface 1 and second in multiple position measurements first on the basis of the second cooperation curved surface 2
Difference, the first average of multiple first faces difference and the first deviation average of face difference preset value are calculated, calculate multiple second faces
Second average of difference and the second deviation average of face difference preset value, when the absolute value of the first deviation average is less than or equal to
The absolute value of second deviation average, it is selected reference face to determine the first cooperation curved surface 1, when the absolute value of the first deviation average
More than the absolute value of the second deviation average, it is selected reference face to determine the second cooperation curved surface 2.Wherein, the first deviation average
Absolute value be equal to the second deviation average absolute value in the case of, first cooperation curved surface 1 with second coordinate curved surface 2 can make
For required selected reference face.In addition, the multiple positions being related in above-mentioned steps can be preferably determined in step with simulation
One or more positions of section 3 are corresponding, so as to realize that simulation determination and actual measurement can be well matched between selected, with more preferable
Ground is mutually matched and verified, improves the accuracy for determining target fiducials face.
The preferred embodiment of the disclosure is described in detail above in association with accompanying drawing, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical scheme of the disclosure
Monotropic type, these simple variants belong to the protection domain of the disclosure.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the disclosure to it is various can
The combination of energy no longer separately illustrates.
In addition, it can also be combined between a variety of embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought, it should equally be considered as disclosure disclosure of that.
Claims (10)
1. a kind of reference plane for coordinating curved surface determines method, it is characterised in that the reference plane determines that method includes：
Simulation determines step, and the mould in the first cooperation curved surface (1) and the second cooperation curved surface (2) is determined by analogue measurement face difference
Intend reference plane,
The selected step of actual measurement, the choosing in the first cooperation curved surface (1) and the second cooperation curved surface (2) is determined by Entity measurement face difference
Determine reference plane,
When the simulation reference plane from the selected reference face be different cooperation curved surfaces, simulation translates the first cooperation curved surface
(1) or described second coordinates curved surface (2) and re-starts the simulation determination step and the selected step of the actual measurement, when the mould
It is same cooperation curved surface to intend reference plane with the selected reference face, determines that the simulation reference plane or the selected reference face are mesh
Mark reference plane.
2. reference plane according to claim 1 determines method, it is characterised in that the simulation determines that step is included in three-dimensional
Created in software and intercept the described first section (3) for coordinating curved surface (1) and the second cooperation curved surface (2), the section simultaneously
(3) coordinate the fit clearance of curved surface (1) and the second cooperation curved surface (2) perpendicular with first, analogue measurement face difference is in institute
State in section (3) and obtain.
3. reference plane according to claim 2 determines method, it is characterised in that the simulation determines that step includes：Institute
State in section (3), on the basis of first coordinates curved surface (1), measurement first coordinates curved surface (1) to coordinate the of curved surface (2) with second
One face aberration measurements (h1), on the basis of second coordinates curved surface (2), measurement first coordinates curved surface (1) to coordinate curved surface (2) with second
The second face aberration measurements (h2),
Calculate the first face aberration measurements (h1) with the first difference (Δ h of face difference preset value (h)1) and second face difference survey
Value (h2) with the second difference (Δ h of face difference preset value (h)2), as the first difference (Δ h1) absolute value be less than or equal to
Second difference (the Δ h2) absolute value, determine the first cooperation curved surface (1) for simulation reference plane, when the first difference (Δ
h1) absolute value be more than the second difference (Δ h2) absolute value, determine the second cooperation curved surface (2) for simulation reference plane.
4. reference plane according to claim 2 determines method, it is characterised in that the simulation determines that step includes：Create
Multiple sections (3), in each section (3), on the basis of first coordinates curved surface (1), measurement first coordinates curved surface
(1) the first face aberration measurements (h between the second cooperation curved surface (2)1), on the basis of second coordinates curved surface (2), measurement first
Coordinate the second face aberration measurements (h between curved surface (1) and the second cooperation curved surface (2)2),
Calculate multiple first face aberration measurements (h1) the first face difference average value (h1v) with it is the first of face difference preset value (h) flat
Equal difference (Δ h1v), calculate multiple second face aberration measurements (h2) the second face difference average value (h2v) and face difference preset value
(h) the second mean difference (Δ h2v), as the first mean difference (Δ h1v) absolute value be less than or equal to it is described second flat
Equal difference (Δ h2v) absolute value, determine the first cooperation curved surface (1) for simulation reference plane, when the first mean difference (Δ
h1v) absolute value be more than the second mean difference (Δ h2v) absolute value, determine the second cooperation curved surface (2) for simulation benchmark
Face.
5. the reference plane according to claim 3 or 4 determines method, it is characterised in that measurement first face aberration measurements
(h1) include：
The point of contact for choosing the described first R angles for coordinating curved surface (1) is the first point of contact (a1), chooses described first and coordinates curved surface (1)
Upper the first basic point (b1) with first point of contact (a1) at a distance of the first length,
Described second first straight line for coordinating curved surface (2) is extended to by the first point of contact (a1) and the first basic point (b1) generation
(c1),
The point of contact for choosing the R angles of the second cooperation curved surface (2) be the second point of contact (a2), and second point of contact (a2) arrives described the
The vertical range of one straight line (c1) is the first face aberration measurements (h1)。
6. reference plane according to claim 5 determines method, it is characterised in that measurement the second face aberration measurements (h2)
Including：
The second basic point (b2) with second point of contact (a2) at a distance of the second length on the second cooperation curved surface (2) is chosen,
The second of the first cooperation curved surface (1) is extended to by second point of contact (a2) and second basic point (b2) generation
Straight line (c2),
The vertical range of first point of contact (a1) to the second straight line (c2) is the second face aberration measurements (h2)。
7. reference plane according to claim 6 determines method, it is characterised in that first length is equal to the described second length
Degree.
8. reference plane according to claim 2 determines method, it is characterised in that avoid it is described first coordinate curved surface (1) and
Described second coordinates the edge of curved surface (2) to create the section (3).
9. reference plane according to any one of claim 1 to 4 determines method, it is characterised in that the selected step of actual measurement
Suddenly include：Using face difference cubing, the cooperation curved surface of measurement first (1) coordinates curved surface with second on the basis of the first cooperation curved surface (1)
(2) the first face difference, the cooperation curved surface of measurement first (1) coordinates curved surface (2) with second on the basis of the second cooperation curved surface (2)
Second face difference,
Calculate the first deviation and second face difference and face difference preset value of first face difference and face difference preset value
Second deviation, when first deviation absolute value be less than or equal to second deviation absolute value, determine first
Coordinate curved surface (1) be selected reference face, when first deviation absolute value more than second deviation absolute value, really
Fixed second coordinates curved surface (2) to be selected reference face.
10. reference plane according to any one of claim 1 to 4 determines method, it is characterised in that the selected step of actual measurement
Suddenly include：Using face difference cubing, by first coordinate curved surface (1) on the basis of in multiple position measurements first coordinate curved surface (1) and the
Two coordinate the first face difference of curved surface (2), coordinate curved surface in multiple position measurements first on the basis of the second cooperation curved surface (2)
(1) with second coordinate curved surface (2) the second face difference,
The first average of multiple first face differences and the first deviation average of face difference preset value are calculated, is calculated multiple described
Second average of the second face difference and the second deviation average of face difference preset value, when the absolute value of first deviation average
Less than or equal to the absolute value of second deviation average, it is selected reference face to determine the first cooperation curved surface (1), when described
The absolute value of one deviation average is more than the absolute value of second deviation average, determines that the second cooperation curved surface (2) is selected
Reference plane.
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| CN111597629A (en) * | 2020-04-07 | 2020-08-28 | 吉利汽车研究院（宁波）有限公司 | Alarm method, alarm system, electronic equipment and storage medium |
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