CN104378916A

CN104378916A - Article correcting method

Info

Publication number: CN104378916A
Application number: CN201310351459.1A
Authority: CN
Inventors: 冯兆平
Original assignee: DAGUAN TECHNOLOGY Co Ltd
Current assignee: DAGUAN TECHNOLOGY Co Ltd
Priority date: 2013-08-13
Filing date: 2013-08-13
Publication date: 2015-02-25
Anticipated expiration: 2033-08-13
Also published as: CN104378916B

Abstract

Provided is an article correcting method. The article correcting method is used for correcting the position of an article for facilitating subsequent processing, and is suitable for plate articles. According to the article correcting method, photographic equipment and an adjusting device are adopted, at least two reference points are marked on the article in advance, the photographic equipment is provided with at least two windows, correcting points are defined in the windows, and the projection range of the windows covers one reference point. The distances between the correction points of the windows within the projection range and the reference points are adopted as the basis of the article correcting method, and the position of the article is adjusted by the adjusting device until the quadratic sum of the distances between the reference points and the correcting points of the windows where the reference points fall is the 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

If the plate-like articles of the class of circuit board is before the modern automatic work flow of acceptance, often the position that it is placed on tool or board need be corrected in advance, be beneficial to and carry out the action such as follow-up boring or part installation; This is because the technique of object also cannot ensure that each object of output all has identical size or shape, so in certain permissible range, size or the shaped slightly object that there is any discrepancy can in row processing again after accurate correction, to guarantee that the finished product after processing has equal function or effect, especially, for being laid with the object of precision circuit line in advance, the importance of correction is unquestionable especially.

Known bearing calibration is on object to be processed, indicate two reference points in advance, then according to the online angle of two reference points and central point as correction foundation, error to a certain degree occurs tolerable object size thus.Only, the method still has it to limit to, and is not suitable for the very large or flexual object of tool of size, because such object can produce irregular harmomegathus unavoidably or type becomes, makes aforementioned corrected according to misalignment; If add more multiple reference points to overcome this problem, the correction foundation that cannot work in coordination likely can be produced between different reference points, that is, in any case moving article, all cannot meet all correction foundations simultaneously, make corrective action in a hopeless position, between different objects, be difficult to the calibration standard of agreeing.

Summary of the invention

The object of the present invention is to provide a kind of object bearing calibration, even if the size of object is comparatively large or tool pliability, and be labeled with the reference point of more than two Arbitrary distribution, still effectively can correct the position of object on board or tool, be convenient to carry out follow-up processing action.

For achieving the above object, object bearing calibration provided by the present invention is the object be applied in tabular, this object is labeled with at least two reference points in advance, this bearing calibration comprises use one photographic goods and an adjusting device, these photographic goods have at least two windows, contain this reference point in the drop shadow spread of this window, and in this window, definition has a check point, this reference point respectively in this window is corresponding each other with this check point, and this bearing calibration comprises the following step:

Calculate an offset distance of respectively this reference point, wherein this offset distance is defined as this reference point and the corresponding distance of this check point on a projection plane;

Use this adjusting device to adjust the position of this object, again calculate this offset distance of respectively this reference point after this article displacement, until the quadratic sum of those offset distances of those reference points is minimum.

Effect of the present invention is effectively to correct the position of object on board or tool, and can be applicable to the object that shape is comparatively large or make with flexible material.

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 correction of simultaneously demonstrating;

Fig. 2 is the enlarged diagram of one of them window 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.

Symbol description in accompanying drawing:

10 objects, 12 reference points, 20 windows, 22 check points, 24 coordinate systems.

Embodiment

For can the present invention be illustrated more clearly in, lifts preferred embodiment and coordinate accompanying drawing to be described in detail as follows.Object bearing calibration of the present invention is applicable to the object of tabular, and this object is labeled with at least two reference points in advance, practical operation can complete the sign of those reference points when manufacturing object, relevant marker method is emphasis of the present invention not, detailed description is not added, as long as those reference points relative distance to each other should be subject to the different objects of equal calibration standard are all unanimously in this; This bearing calibration comprises use one photographic goods and an adjusting device, this adjusting device be adjust object position to correct, illustrate in advance.

Refer to Fig. 1 and Fig. 2, a preferred embodiment of the present invention by correct object be an object 10, this object 10 has four reference points indicated in advance 12; These photographic goods have four windows 20, respectively contain and have this reference point 12 in the drop shadow spread of those windows 20, and each definition of those windows 20 has a check point 22, and this reference point 12 respectively in this window 20 is corresponding each other with this check point 22.Seen at this, the shape of this object 10 does not have any Special Significance, is not also application of the present invention restriction.

Carry out object bearing calibration provided by the invention for convenience, respectively this window 20 all defines a coordinate system 24, and its effect please be chatted by Rong Houzai.In the present embodiment, in the drop shadow spread of each this window 20, this check point 22 is the initial point of this coordinate system 24, but not as limit; Because this check point 22 is all positioned on this coordinate system 24 with this reference point 12, therefore this check point 22 has one first coordinate figure (X1, Y1), and this reference point 12 also has one second coordinate figure (X2, Y2).

Specifically be, the quantity of those windows 20 that those reference points 12, those check points 22 have with these photographic goods can not be considered as restriction of the present invention, though in the present embodiment, those reference points 12, those check points 22 are all four with the quantity of those windows 20, but this is only a kind of demonstration, in other embodiments, as long as those reference points 12, those check points 22 are at least more than two with the quantity of those windows 20, and corresponding each other.

Please refer to Fig. 3, object bearing calibration of the present invention comprises the following step:

First, in each this window 20, by this first coordinate figure (X1, and this second coordinate figure (X2 Y1), Y2), calculate this reference point 12 and the distance of this check point 22 on a projection plane through geometry teaching, this distance definition is an offset distance of this reference point 12.

Then, use this adjusting device to adjust the position of this object 10, again calculate this offset distance of respectively this reference point 12 after this object 10 displacement, until the quadratic sum of those offset distances of those reference points 12 is minimum.

Object bearing calibration provided by the invention so adopt the quadratic sum of those offset distances for correcting foundation, reason is that the quadratic sum of those offset distances is quadratic function, and quadratic function mathematically can obtain the minimizing unique solution of tool.When the quadratic sum of those offset distances of those reference points 12 is minimum, represents this object 10 and be in a moderate position, respectively this reference point 12 as far as possible on average presses close to corresponding this check point 22.

Comparison diagram 1 and Fig. 4, Fig. 1 please demonstrate this object 10 in accepting the position before correcting, Fig. 4 then demonstrates after this object 10 corrects according to above-mentioned steps, the state when quadratic sum of those offset distances of those reference points 20 is minimum.As long as object bearing calibration of the present invention be applied on a plurality of objects of pending same processing action, just each object can be considered as all there is same calibration standard.

It is worth mentioning that, as previously mentioned, in the present embodiment respectively in this window 20 all definition have this coordinate system 24, this conveniently calculates distance respectively between this reference point 12 with corresponding one this check point 22 (that is respectively this offset distance of this reference point 12), certainly also can adopt the different calculation methods being different from and using this coordinate system 24 in other embodiments.

In sum, even if the size of object is larger, or make with flexible materials, object bearing calibration of the present invention still can pass through the plural window of photographic goods, utilize a plurality of reference points be shown in advance on object, the effective position of correction object on board or tool, is conducive to follow-up processing action.

The foregoing is only the better possible embodiments of the present invention, the equivalent method that application specification of the present invention and claim are done such as changes, and ought to be included in right of the present invention.

Claims

1. an object bearing calibration, it is the object be applied in tabular, this object is labeled with at least two reference points in advance, this bearing calibration comprises use one photographic goods and an adjusting device, these photographic goods have at least two windows, respectively contain and have this reference point in the drop shadow spread of those windows, and in those windows, each definition has a check point, this reference point respectively in this window is corresponding each other with this check point, and this bearing calibration comprises the following step:

2. object bearing calibration according to claim 1, wherein, those windows have respectively defined a coordinate system, and respectively this check point of this window has one first coordinate figure on this coordinate system.

3. object bearing calibration according to claim 2, wherein, respectively this reference point has one second coordinate figure on this coordinate system of corresponding window; Respectively this offset distance of this reference point is calculated by this first coordinate figure and this second coordinate figure.