CN104275627B

CN104275627B - Object bearing calibration

Info

Publication number: CN104275627B
Application number: CN201310288752.8A
Authority: CN
Inventors: 冯兆平
Original assignee: DAGUAN TECHNOLOGY Co Ltd
Current assignee: DAGUAN TECHNOLOGY Co Ltd
Priority date: 2013-07-10
Filing date: 2013-07-10
Publication date: 2016-04-27
Anticipated expiration: 2033-07-10
Also published as: CN104275627A

Abstract

The present invention, about a kind of object bearing calibration, in order to correct the position of an object in order to following process, is applicable to the object of tabular.This bearing calibration uses photographic goods and an adjusting device, and the Edge definition of this object has at least two reference points, and these photographic goods have at least one window, and contains this reference point at least one in the drop shadow spread of this window; In this window, definition has at least one check point, and this reference point in the drop shadow spread of this window and this check point are in pairs; Object bearing calibration of the present invention for foundation, utilizes this adjusting device to adjust the position of this object with the distance between this check point and this reference point, until the quadratic sum of distance between this check point that respectively this reference point is corresponding with it is minimum.

Description

Object bearing calibration

Technical field

The present invention is relevant with processing method; Refer to a kind of object bearing calibration especially.

Background technology

Object adds man-hour accepting automation, often be placed on tool or board, carry out again holing, the action such as part installation, but each object is in size or more or less some difference in shape, if object is not before processing through position correction, follow-up processing action inevitably will produce error.For similarly being the delicate objects of printed circuit board (PCB) and so on, laid in advance through methods such as acid wash by circuit thereon, if cannot accurately locate, then probably cause processing unsuccessfully because of error, object finally can only be passed into disuse, and certain manufacturer not pleasure sees that waste unnecessary like this occurs.

For the object of rectangle or class rectangle, in theory can by each right angle of object as the foundation corrected, but the method has it to limit to, because the end angle of many objects is in fact and on-right angle, common have cut into fillet or lead angle to avoid tip to break or as the use (face glass as intelligent running gear) of shape-designing.Current existing bearing calibration is along holding the both sides at angle to draw imaginary extended line, again with the datum mark of the intersection point of extended line for correcting, but often there is no small error at the end angle as mentioned above through cutting, the shape at the end angle of each object cannot be consistent, if meet more irregular end angle, can be there is serious deviation and move in correction reference point, so that calibration result is not good.And this method is not also suitable for the object having curved edge or lack end angle, right angle, the application in practice is extensive not.

Summary of the invention

In view of this, object of the present invention is used for providing a kind of object bearing calibration, even if object has more irregular end angle, or even lacks end angle rectangular in fact, still effectively can correct the position of object on board or tool, in order to following process action.

Edge is to reach above-mentioned purpose, object bearing calibration provided by the present invention is the object be applied in tabular, the Edge definition of this object has at least two reference points, this bearing calibration comprises use one photographic goods and an adjusting device, these photographic goods have at least one window, in this window, definition has at least one check point, this reference point at least one is contained in the drop shadow spread of this window, and this reference point in the drop shadow spread of this window and this check point are in pairs, this bearing calibration comprises the following step: calculate respectively this reference point and the distance of this check point on a projection plane corresponding to it, this distance definition is an offset distance, use this adjusting device to adjust the position of this object, again calculate this offset distance that respectively this reference point and this check point corresponding to it are tried to achieve on this projection plane, until the quadratic sum of those offset distances is minimum.

Effect of the present invention is effectively to correct the position of object on board or tool, and has larger applicability to difform object.

Accompanying drawing explanation

Fig. 1 is the applied environment schematic diagram of object bearing calibration of the present invention, the state of object before accepting to correct of simultaneously demonstrating;

Fig. 2 is the enlarged diagram at one of them end angle of applied environment of Fig. 1;

Fig. 3 is the flow chart of object bearing calibration of the present invention;

Fig. 4 is another schematic diagram of the applied environment of Fig. 1, the optimum state of object after accepting to correct of simultaneously demonstrating;

Fig. 5 is the partial schematic diagram that object bearing calibration of the present invention is applied to another object, illustrates that the present invention is applied in the situation on this object limit linearly;

Fig. 6 is the partial schematic diagram that object bearing calibration of the present invention is applied to another object, illustrates that the present invention is applied in the situation on limit that this object is camber line.

Symbol description

10 objects

12 end angles

12a first limit 12b Second Edge

12c first straight line 12d second straight line 12e reference point

20 windows

22 coordinate systems

22aX axle 22bY axle 22c check point

30 objects

32 limits

32a reference point

40 windows

42 check points

44 datum lines

50 objects

52 limits

52a reference point

60 windows

62 datum lines

62a check point

Detailed description of the invention

For can the present invention be illustrated more clearly in, hereby lifts preferred embodiment and coordinate diagram to be described in detail as follows.Object bearing calibration of the present invention is applicable to the object of tabular, and this bearing calibration comprises use one photographic goods and an adjusting device, this adjusting device be adjust object position to correct, close first chat bright.

Referring to Fig. 1 and Fig. 2, is a preferred embodiment of the present invention, and shown in figure is an object 10 by calibration object, and this object 10 has four end angles 12 rectangular in fact, and respectively this end angle 12 all defines a reference point 12e; These photographic goods have four windows 20, each window has all defined a check point 22c, respectively this end angle 12 all aimed at by this window 20, make all can contain this reference point 12e in the drop shadow spread of respectively this window 20, and respectively this reference point 12e is in the drop shadow spread of this window 20 at its place, all paired with this check point 22c.

Specifically, the quantity of reference point 12e, the quantity of check point 22c in the present embodiment, and the quantity of window 20 that photographic goods have is all four, but this is only a kind of demonstration, and quantity can not be considered as restriction of the present invention.In other embodiments, as long as have at least two reference points at the object Edge definition corrected, and at least one reference point all can be contained in the drop shadow spread of this each window of photographic goods, all there is in the drop shadow spread at this reference point place simultaneously a check point paired with this reference point.Separately, the position of reference point is not limited to hold angle, also can be positioned on limit, but this little described relevant Rong Houzai that asks chats.

Below hereby for a corresponding window 20 in end angle 12, the method correcting this object 10 is described.In the present embodiment, respectively this window 20 all has a coordinate system 22, and this coordinate system 22 is made up of an a vertically disposed X-axis 22a and Y-axis 22b, and this check point 22c is positioned at the initial point of this coordinate system 22, but not as limit.This check point 22c has one first coordinate value (X1, Y1).

This end angle 12 also out-of-flatness as seen from Figure 2, in other words, this end angle 12 is not perfect right angle.This end angle 12 is made up of one first limit 12a and a Second Edge 12b, in this definition one first straight line 12c by the upper specified point of this first limit 12a, one second straight line 12d is by the upper specified point of this Second Edge 12b, this the first straight line 12c and this second straight line 12d is substantial orthogonality, in more detail, this the first straight line 12c and this Y-axis are substantial parallel, this the second straight line 12d and this X-axis are also in substantial parallel, and this first straight line 12c and this second straight line 12d intersection are in a plotted point, this plotted point is just defined as this reference point 12e at this end angle 12.Because this end angle 12 falls in the drop shadow spread of this window 20, this reference point 12e is also positioned at the drop shadow spread of this window 20 naturally, therefore this reference point 12e also has one second coordinate value (X2, Y2) on this coordinate system 22.

Above-mentioned this first straight line 12c substantially parallel to this Y-axis, this second straight line 12d substantially parallel to this X-axis, just a kind of demonstration defined in fact, in other embodiment, the parallel relation of first, second straight line and X-axis, Y-axis also can contrary (that is the first straight line substantially parallel to X-axis, the second straight line substantially parallel to Y-axis) for it, definition only for convenience of description, can not as the restriction in practical application a bit for this.

Please refer to Fig. 3, object bearing calibration of the present invention comprises the following step: first, tries to achieve the distance of this check point 22c on a projection plane in this reference point 12e at respectively this end angle 12 and corresponding window 20.This distance is learnt through geometry teaching calculating by this first coordinate value (X1, Y1) of this check point 22c and this second coordinate value (X2, Y2) of this reference point 12e, and this distance definition is an offset distance.

Then, this adjusting device is used to adjust the position of this object 10, again calculate this offset distance that this check point 22c in this reference point 12e at respectively this end angle 12 and corresponding window 20 tries to achieve on this projection plane, until the quadratic sum of those offset distances of trying to achieve respectively in this four window is minimum.More particularly, why adopt the quadratic sum of those offset distances for correcting foundation, reason is that the quadratic sum of those offset distances is quadratic function, mathematically can obtain the minimizing unique solution of tool.The quadratic sum of this offset distance of trying to achieve when each end angle 12 of this object 10 is minimum, represent this object 10 and be in a moderate position, there will not be the situation that the distance of this check point 22c in this reference point 12e at this end angle 12 arbitrary and corresponding window 20 is too remote.

Please comparison diagram 1 and Fig. 4, Fig. 1 demonstrates this object 10 in accepting the position before correction, Fig. 4 then demonstrates this object 10 according to after above-mentioned steps correction, and the state when quadratic sum of this offset distance that each end angle 12 is tried to achieve is minimum, obviously can find out that in Fig. 4, this object 10 is positioned at this moderate position.As long as object bearing calibration of the present invention be applied on multiple objects of pending same processing action, guarantee that each object was all positioned at this moderate position before carrying out following process, just each object can be considered as all there is same calibration standard.

Respectively all there is a coordinate system 22 in this window 20 in the present embodiment, this conveniently calculates this offset distance between this check point 22c in each this window 20 and this reference point 12e, also different computational methods can be adopted, the use of this coordinate system 22 not required that they be so in other embodiment.

As previously mentioned, reference point needed for bearing calibration of the present invention does not limit and is positioned at end angle, refer to Fig. 5, the calibration object of another preferred embodiment of the present invention is the object 30 of another tabular, the present embodiment and previous embodiment are roughly identical, comprise use one photographic goods and an adjusting device, these photographic goods also have multiple window 40, and difference is that this object 30 has a limit 32 linearly in the drop shadow spread of this window 40.

The present embodiment corrects for utilizing this limit 32, therefore define this limit 32 has in a reference point 32a, this window 40 there is a check point 42, and this window 40 has a datum line 44, this datum line 44 is through this reference point 32a, and this check point 42 is a specified point on this datum line 44.

Calculate the offset distance between this reference point 32a and this check point 42 for convenience, in the present embodiment, this datum line 44 is substantially perpendicular to this limit 32, so just directly can calculate along this datum line 44 and learn.Obtain the bearing calibration after this offset distance general as previously described in a prior embodiment, schematic illustration is as follows herein: the present embodiment adjusts the position of this object 30 equally by this adjusting device, the quadratic sum finally making respectively this offset distance of trying to achieve in respectively this window 40 of these photographic goods is minimum, corrects and has namely accused.

Please refer to Fig. 6, another preferred embodiment of the present invention is in order to correct the object 50 of a tabular, comprise use one photographic goods and an adjusting device, as as described in more front embodiment, this object 50 can be seen in the drop shadow spread that these photographic goods have multiple this window 60 of window 60, and there is a curved limit 52.For utilizing this limit 52 to correct, on this limit 52, definition has two reference point 52a, and the definition of this window 60 has two check point 62a, corresponding with this two reference point 52a respectively.

With last preferred embodiment in like manner, for ease of calculating an offset distance of this reference point 52a and corresponding one this check point 62a, this window has two datum lines 62, respectively this datum line is each passed through this reference point 52a, preferably, this two datum line 62 is substantial parallel, with the angular deviation of this curved limit 52 diverse location of mean allocation; Respectively this check point 62a is respectively a specified point on this datum line 62.This offset distance of this reference point 52a and corresponding one this check point 62a can be tried to achieve accordingly easily, and obtain the aligning step after this offset distance with the first two embodiment, hold this no longer superfluous words.

In sum, even if object has more irregular end angle, or even not there is end angle rectangular in fact, object bearing calibration of the present invention still can pass through multiple windows of photographic goods, utilize the end angle of object, limit linearly, limit in camber line, or the combination of these three kinds of situations, effectively correct the position of object on board or tool, be conducive to follow-up processing action.

The foregoing is only the better possible embodiments of the present invention, such as apply description of the present invention and the equivalent method change for it of right institute, ought to be included in the scope of the claims of the present invention.

Claims

1. an object bearing calibration, it is characterized in that, be applied to the object in tabular, the Edge definition of this object has at least two reference points, and this bearing calibration comprises use one photographic goods and an adjusting device, and these photographic goods have at least one window, in this window, definition has at least one check point, contain this reference point at least one in the drop shadow spread of this window, and this reference point in the drop shadow spread of this window and this check point are in pairs, this bearing calibration comprises the following step:

Calculate respectively this reference point and the distance of this check point on a projection plane corresponding to it, this distance definition is an offset distance;

Use this adjusting device to adjust the position of this object, again calculate this offset distance that respectively this reference point and this check point corresponding to it are tried to achieve on this projection plane, until the quadratic sum of those offset distances is minimum.

2. object bearing calibration as claimed in claim 1, it is characterized in that, this object has an end angle rectangular in fact, and this end angle is made up of one first limit and a Second Edge; A specified point on this first limit of one first straight-line pass, a specified point on one second this Second Edge of straight-line pass, and this first straight line and this second straight line are substantial orthogonality intersection; The plotted point of this first straight line and this second straight line is this reference point.

3. object bearing calibration as claimed in claim 2, it is characterized in that, this window corresponding to this reference point has a vertically disposed X-axis and a Y-axis, this X-axis and this Y-axis form a coordinate system, this check point corresponding to this reference point is the specified point on this coordinate system, and this check point has one first coordinate value.

4. object bearing calibration as claimed in claim 3, is characterized in that this reference point this coordinate system in corresponding window has one second coordinate value; This offset distance that this reference point and this corresponding check point are tried to achieve on this projection plane calculates it by this first coordinate value and this second coordinate value.

5. object bearing calibration as claimed in claim 3, is characterized in that, this X-axis and this first straight line or this second straight line one are wherein substantial parallel, and this Y-axis and this first straight line or this second straight line another one are wherein substantial parallel.

6. object bearing calibration as claimed in claim 1, is characterized in that, this object has a limit in fact linearly, and this reference point is positioned on this limit.

7. object bearing calibration as claimed in claim 6, it is characterized in that, this window corresponding to this reference point has a datum line, and this datum line is through this reference point; This check point corresponding with this reference point is a specified point of this datum line.

8. object bearing calibration as claimed in claim 7, it is characterized in that, this datum line is substantially perpendicular to this limit.

9. object bearing calibration as claimed in claim 1, is characterized in that, this object has the limit that is in fact camber line, and two these reference points lay respectively at the diverse location on this limit.

10. object bearing calibration as claimed in claim 9, it is characterized in that, this two reference point is positioned at the drop shadow spread of the same window, and this window has two datum lines, and this two datum line is each passed through this reference point; Two check points corresponding with this two reference point are respectively a specified point of this datum line.

11. object bearing calibrations as claimed in claim 10, it is characterized in that, this two datum line is substantial parallel.