TWI515078B - Object correction method - Google Patents

Description

Object correction method

The invention relates to a processing method; in particular to an object correction method.

When the object is subjected to automated processing, it is often placed on the fixture or machine table, and then drilled, parts installed, etc., but each object is more or less different in size or shape, if the object is before processing Without position correction, subsequent machining actions will inevitably produce errors. For precision objects such as printed circuit boards, since the lines on them have been pre-arranged by means of pickling, etc., if they are not accurately positioned, it is likely that the processing will fail due to errors, and the objects can only be discarded. Of course, manufacturers are not happy to see such unnecessary waste happening.

For rectangular or rectangular-like objects, theoretically, the right angles of the objects can be used as the basis for correction, but this method has its limitations, because the end angles of many objects are not actually right angles, and it is common to cut into rounded corners or lead angles. To avoid tip breakage or as a design (such as the glass panel of a smart mobile device). At present, the conventional correction method draws an imaginary extension line along both sides of the end angle, and then uses the intersection point of the extension line as a reference point for correction, but the end angle of the cut as described above often has a small error, each The shape of the end angle of the object cannot be consistent. If a non-flat end angle is encountered, the calibration reference point will be seriously deviated, so that the correction effect is not good. Moreover, this method is not applicable to objects having curved edges or lacking right-angled end angles, and the practical application is not extensive enough.

In view of the above, the object of the present invention is to provide an object correction method capable of effectively correcting an object on a machine table or a fixture even if the object has a relatively uneven end angle or even lacks a substantially right-angled end angle. Position to facilitate subsequent processing actions.

In order to achieve the above object, the object correction method provided by the present invention is applied to an object in the shape of a plate, and the edge of the object defines at least two reference points, and the correction method comprises using a photographic device and an adjusting device, the photography The device has at least one window, wherein the window defines at least one calibration point, the projection range of the window covers at least one of the reference points, and the reference point in the projection range of the window is paired with the correction point, The calibration method comprises the steps of: calculating a distance of each of the reference points and the corresponding correction point on a projection plane, the distance being defined as a deviation distance; adjusting the position of the object by using the adjusting device, and calculating each reference again The deviation distance obtained by the point corresponding to the correction point on the projection plane until the sum of the squares of the deviation distances is the smallest.

The effect of the invention is to effectively correct the position of the object on the machine table or the fixture, and has greater applicability to objects of different shapes.

10‧‧‧ objects

12‧‧‧End angle

12a‧‧‧ first side

12b‧‧‧ second side

12c‧‧‧First straight line

12d‧‧‧Second line

12e‧‧ Reference point

20‧‧‧Window

22‧‧‧ coordinate system

22a‧‧‧X-axis

22b‧‧‧Y axis

22c‧‧‧ calibration point

30‧‧‧ objects

32‧‧‧ side

32a‧‧ Reference point

40‧‧‧Window

42‧‧‧ calibration point

44‧‧‧ baseline

50‧‧‧ objects

52‧‧‧ side

52a‧‧ Reference point

60‧‧‧ windows

62‧‧‧ baseline

62a‧‧‧ calibration point

1 is a schematic diagram of an application environment of the object correction method of the present invention, and demonstrates the state of the object before being subjected to correction; FIG. 2 is an enlarged schematic view of one end angle of the application environment of FIG. 1; FIG. 3 is a flowchart of the object correction method of the present invention. Figure 4 is another schematic diagram of the application environment of Figure 1, while demonstrating objects FIG. 5 is a partial schematic view showing the application of the object correction method of the present invention to another object, illustrating the application of the present invention to the side of the object on a straight line; FIG. 6 is an application of the object correction method of the present invention. A partial schematic view of another article illustrating the application of the invention to the edge of the article that is curved.

In order that the present invention may be more clearly described, the preferred embodiments are illustrated in the accompanying drawings. The object correcting method of the present invention is applicable to a plate-shaped object, and the correcting method includes using a photographic apparatus and an adjusting device for adjusting the position of the object for correction, which will be described first.

Referring to FIG. 1 and FIG. 2, in accordance with a preferred embodiment of the present invention, the object to be corrected is an object 10 having four substantially right-angled end angles 12, each of which has an end angle 12 A reference point 12e is defined; the photographic device has four windows 20, each of which defines a correction point 22c, each of which is aligned with a corner 12 so that the projection range of each window 20 can be covered. The reference point 12e, and each of the reference points 12e is paired with a correction point 22c within the projection range of the window 20 in which it is located.

It should be particularly noted that the number of reference points 12e, the number of correction points 22c, and the number of windows 20 of the photographic equipment in this embodiment are all four, but this is only an example, and the quantity cannot be regarded as Limitations of the invention. In other embodiments, as long as at least two reference points are defined at the edge of the corrected object, and the projection range of each window of the photographic device can cover at least one reference point, and the reference point has a projection range within the projection range. The reference point can be paired with a correction point. In addition, the position of the reference point is not limited to the end angle, but it can also be located on the side, but please refer to these related details.

Hereinafter, a method of correcting the object 10 will be described by taking an end angle 12 corresponding to a window 20 as an example. Each of the windows 20 in the embodiment has a labeling system 22, and the coordinate system 22 is formed by a vertically disposed X-axis 22a and a Y-axis 22b. The calibration point 22c is located at the origin of the coordinate system 22, but Not limited to this. The correction point 22c has a first coordinate value (X1, Y1).

It can be seen from Figure 2 that the end angle 12 is not flat, in other words, the end angle 12 is not a perfect right angle. The end angle 12 is formed by a first side 12a and a second side 12b. Here, a first line 12c is defined by a specific point on the first side 12a, and a second line 12d is passed through the second side 12b. At a specific point, the first line 12c is substantially perpendicular to the second line 12d. More specifically, the first line 12c is substantially parallel to the Y axis, and the second line 12d and the X axis are substantially Parallel, and the first straight line 12c intersects the second straight line 12d at an intersection point, which is defined as the reference point 12e of the end angle 12. Since the end angle 12 falls within the projection range of the window 20, the reference point 12e is naturally also within the projection range of the window 20, so the reference point 12e also has a second coordinate value (X2) on the coordinate system 22. , Y2).

The first line 12c is substantially parallel to the Y axis, and the second line 12d is substantially parallel to the X axis. In fact, it is only a definition example. In other embodiments, the first line, the second line and the X axis The parallel relationship of the Y-axis can also be reversed (that is, the first line is substantially parallel to the X-axis and the second line is substantially parallel to the Y-axis). These definitions are for convenience only and cannot be used as practical limitations. .

Referring to FIG. 3, the object correction method of the present invention comprises the following steps: First, the distance between the reference point 12e of each end angle 12 and the correction point 22c in the corresponding window 20 on a projection plane is obtained. The distance can be calculated geometrically by the first coordinate value (X1, Y1) of the correction point 22c and the second coordinate value (X2, Y2) of the reference point 12e. Deviation is defined as a deviation distance.

Then, the adjustment device is used to adjust the position of the object 10, and the deviation distance between the reference point 12e of each end angle 12 and the correction point 22c in the corresponding window 20 on the projection plane is calculated again until the The sum of the squares of the deviation distances obtained in the four windows is the smallest. More specifically, the sum of the squares of the deviation distances is used as a basis for correction, because the sum of the squares of the deviation distances is a quadratic function, and a unique solution with a minimum value can be obtained mathematically. When the sum of the squares of the deviation distances obtained by the respective end angles 12 of the object 10 is the smallest, it means that the object 10 is already in a moderate position, and the reference point 12e of the end angle 12 and the corresponding window 20 do not appear. The correction point 22c within is too far away.

1 and FIG. 4, FIG. 1 exemplifies the position of the object 10 before being subjected to the correction, and FIG. 4 exemplifies that the object 10 is corrected according to the above steps, and the square of the deviation distance obtained by each end angle 12 is the most In the state of hours, it is apparent that the article 10 in Figure 4 is in the center position. As long as the object correction method of the present invention is applied to a plurality of objects to be subjected to the same processing operation, ensuring that each object is located at the appropriate position before the subsequent processing, each object can be regarded as having the same calibration standard. .

In the embodiment, each of the windows 20 has a labeling system 22, which is used to conveniently calculate the deviation distance between the calibration point 22c and the reference point 12e in the window 20, and may be used in other embodiments. The use of the coordinate system 22 is not absolutely necessary using different calculation methods.

As described above, the reference point required for the calibration method of the present invention is not limited to the end angle. Referring to FIG. 5, the calibration object of another preferred embodiment of the present invention is another plate-shaped object 30. The previous embodiment is generally similar, including the use of a photographic apparatus and an adjustment device that also has a plurality of windows 40, except that the object 30 has a rectilinear edge 32 within the projection range of the window 40.

The embodiment is intended to be corrected by the edge 32. Therefore, the side 32 has a reference point 32a, the window 40 has a correction point 42 therein, and the window 40 has a reference line 44 through which the reference line 44 passes. Reference point 32a, which is a particular point on the reference line 44.

In order to facilitate the calculation of a deviation distance between the reference point 32a and the correction point 42, the reference line 44 is substantially perpendicular to the edge 32 in this embodiment, so that it can be directly calculated along the reference line 44. The method for obtaining the deviation distance is as described in the previous embodiment, and is briefly described as follows: in this embodiment, the position of the object 30 is also adjusted by the adjusting device, and finally the window 40 of the photographic device is finally The sum of the squares of the deviation distances obtained is the smallest, and the correction is completed.

Referring to FIG. 6, another preferred embodiment of the present invention is used to correct a plate-shaped object 50, including using a photographic device and an adjusting device. The photographic device has a plurality of windows 60, as described in the foregoing embodiments. It can be seen within the projection range of the window 60 that the article 50 has an arcuate edge 52. To correct with the edge 52, the side 52 defines two reference points 52a, and the window 60 defines two correction points 62a corresponding to the two reference points 52a, respectively.

In the same manner as the previous preferred embodiment, in order to facilitate calculation of a deviation distance between the reference point 52a and a corresponding one of the correction points 62a, the window has two reference lines 62, and each of the reference lines passes through the reference point. 52a, preferably, the two reference lines 62 are substantially parallel to evenly distribute angular deviations of different positions of the curved sides 52; each of the correction points 62a is a particular point on the reference line 62. According to this, the deviation distance between the reference point 52a and the corresponding one of the correction points 62a can be easily obtained, and the correction step after obtaining the deviation distance is the same as the previous two implementations, and it is no longer a rumor.

In summary, even if the object has a relatively uneven end angle, or even does not have a substantially right angle end angle, the object correcting method of the present invention can still pass through the plurality of windows of the photographic equipment, and utilize the end angle of the object to be a straight line. The edge of the arc, the edge of the arc, or a combination of the three conditions, effectively corrects the position of the object on the machine or fixture, which is beneficial to subsequent machining operations.

The above description is only for the preferred embodiments of the present invention, and the equivalent method variations of the present invention and the scope of the patent application are intended to be included in the scope of the present invention.

Claims (10)

An object correction method is applied to an object in the form of a plate, the edge of the object defining at least two reference points, the correction method comprising using a photographic device and an adjusting device, the photographic device having at least one window, the window Defining at least one correction point, the projection range of the window covers at least one of the reference points, and the reference point within the projection range of the window is paired with the correction point, and the correction method comprises the following steps: calculating each a distance between the reference point and the corresponding correction point on a projection plane, the distance being defined as a deviation distance; using the adjustment device to adjust the position of the object, and recalculating each of the reference points and the corresponding correction point thereof The deviation distance obtained on the projection plane until the sum of the squares of the deviation distances is minimum; wherein the object has an end angle substantially at a right angle, the end angle being a first side and a second side Constructing a first straight line through a specific point on the first side, a second straight line passing through a specific point on the second side, and the first straight line and the second straight line are Mass vertical intersection; point of intersection of the first straight line and the second line is just a reference point. The object correction method of claim 1, wherein the window corresponding to the reference point has an X axis and a Y axis that are vertically disposed, and the X axis and the Y axis form a calibration system corresponding to the reference point. The correction point is a specific point on the coordinate system, and the correction point has a first coordinate value. The object correction method of claim 2, wherein the reference point has a second coordinate value on the coordinate system in the corresponding window; the reference point is opposite The deviation distance determined by the correction point on the projection plane is calculated by the first coordinate value and the second coordinate value. The object correction method of claim 2, wherein the X axis is substantially parallel to one of the first line or the second line, and the Y axis is substantially the same as the first line or the second line Parallel on. An object correction method is applied to an object in the form of a plate, the edge of the object defining at least two reference points, the correction method comprising using a photographic device and an adjusting device, the photographic device having at least one window, the window Defining at least one correction point, the projection range of the window covers at least one of the reference points, and the reference point within the projection range of the window is paired with the correction point, and the correction method comprises the following steps: calculating each a distance between the reference point and the corresponding correction point on a projection plane, the distance being defined as a deviation distance; using the adjustment device to adjust the position of the object, and recalculating each of the reference points and the corresponding correction point thereof The deviation distance obtained on the projection plane until the sum of the squares of the deviation distances is minimum; wherein the object has a substantially straight side, and the reference point is located on the side. The object correction method of claim 5, wherein the window corresponding to the reference point has a reference line, the reference line passes through the reference point; and the correction point corresponding to the reference point is one of the reference lines point. The object correction method of claim 6, wherein the reference line is substantially perpendicular to the side. An object correction method is applied to an object in the form of a plate, the edge of the object defining at least two reference points, the correction method comprising using a photographic device and an adjusting device, the photographic device having at least one window, the window Defining at least one correction point, the projection range of the window covers at least one of the reference points, and the reference point within the projection range of the window is paired with the correction point, and the correction method comprises the following steps: calculating each a distance between the reference point and the corresponding correction point on a projection plane, the distance being defined as a deviation distance; using the adjustment device to adjust the position of the object, and recalculating each of the reference points and the corresponding correction point thereof The deviation distance obtained on the projection plane until the sum of the squares of the deviation distances is the smallest; wherein the object has a substantially arc-shaped side, and the reference points are respectively located at different positions on the side. The object correction method of claim 8, wherein the two reference points are located within a projection range of the same window, and the window has two reference lines, the two reference lines respectively passing through the reference point; corresponding to the two reference points The two correction points are respectively a specific point on the reference line. The object correction method of claim 9, wherein the two reference lines are substantially parallel.