JP4821540B2 - Measuring method of base plate for deformed glass - Google Patents

Description

  The present invention relates to a method for measuring a pair of substantially triangular or trapezoidal shaped glass used for an automobile side window glass from a square glass base plate as a set, so as to improve the measurement yield. It is a thing.

  Conventionally, when manufacturing a window glass for an automobile, it is supplied with a window glass shape three-dimensional coordinate data from an automobile manufacturer, and after creating two-dimensional unfolded base plate coordinate data from the three-dimensional coordinate data, the original size is 2 A square base plate is determined by printing a two-dimensional development sheet, placing the two-dimensional development sheet on a graph paper by hand, and rotating the development sheet to minimize the area of the base glass. It was.

  In addition, when taking a plurality of deformed glass plates from a single glass sheet, the two-dimensional developed sheets are manually arranged on a graph paper and the two-dimensional developed sheets are required for measuring the two sheets. The unfolded sheets printed so as to minimize the area of the plate glass were respectively rotated.

Furthermore, for example, in FIG. 10 of JP-A-9-309737, in addition to the cross cutting of the cutting line a in the X-axis direction and the cutting line a ′ in the Y-axis direction, A sheet glass cutting device is disclosed in which the end of insertion is made coincident (Patent Document 1).
JP-A-9-309737

  The aforementioned Patent Document 1 is a cutting device for switching from a large sized glass sheet to a small sized glass sheet, and is not necessarily devised to minimize switching loss when switching to a small sized glass sheet. Furthermore, there is no description of how to arrange a small-sized irregularly shaped glass plate to minimize the switching loss, and it merely cuts along the provided score lines.

  The present invention seeks to solve the above-mentioned problems, that is, by combining a pair of substantially triangular or substantially trapezoidal shaped glass plates for side windows for automobiles as a set of square glass base plates. When measuring, the object is to automatically perform a measuring pattern that minimizes the size of the rectangular glass sheet and minimizes the switching loss.

That is, according to the present invention, in a method of measuring two deformed glass plates obtained by two-dimensionally developing a side window shape of an automobile from a rectangular base glass, the peripheral coordinate data of the deformed glass is input to the arithmetic processing unit. Means, arithmetic processing means for calculating the optimum measuring pattern figure and base plate dimensions based on the input outer peripheral coordinate data, storage means for the read outer peripheral coordinate data and arithmetic processing results, and display of the calculation results on the screen The arithmetic processing means is provided with an ear width adding figure obtained by adding an ear width which is the minimum folding width on the outer periphery of the reference figure of the deformed glass, and the ear width adding figure is two-dimensional orthogonal coordinates. plotted in contact with the X-axis and Y-axis of the system, X-axis of the ear width adding graphics to any one quadrant of a direction of the quadrant of the ear width adding graphic is adjacent to the quadrant are plotted Each time the parallel movement at a constant pitch along the Y axis and the turning at a constant angle with the approximate center of the ear width addition figure as a rotation axis are performed, the ear width addition figure is plotted. At the same time, the point-symmetry figure of the edge width addition figure with the origin O of the orthogonal coordinate system as the center of point symmetry is plotted, and a rectangle surrounding the ear width addition figure and the point symmetry figure with a minimum area is calculated. And it is the measuring method of the base plate for deformed glass, characterized in that two rectangles when the area becomes the minimum are used as the figure of the base plate glass for picking.

  Alternatively, the present invention provides a plurality of two-piece base plate figures that are arranged side by side in a plurality of vertical and horizontal sets of two-piece base board figures surrounding the point-symmetry figure and the edge width addition figure arranged symmetrically. This is a measuring method for the above-mentioned deformed glass base plate.

  When measuring two different glass plates used for automobile side window glass as a set and assembling from a square glass base plate, the shape of the two-dimensionally developed glass plate is generally triangular or In the case of an irregular shape with a hypotenuse, such as a substantially trapezoidal shape, an ear width addition figure that secures the ear part of the minimum folding width is provided outside the entire circumference of these irregular glass plates, and the ear width addition figure is orthogonal By moving from the third quadrant or the fourth quadrant of the system to the other side at a constant pitch in the X-axis direction and / or pivoting at a constant angle, the point O of the orthogonal coordinates is set as the center of point symmetry, Since the base plate figure having the smallest rectangular area surrounding the point-symmetrical figure is taken as the base plate glass figure, the cutting loss when switching from the base plate glass to the irregular glass can be minimized.

  The present invention provides a measuring pattern that minimizes switching loss when measuring a pair of glass plates having a substantially triangular shape or a substantially trapezoidal shape that are used for a side window glass of an automobile from a rectangular base plate glass. Is a way to determine.

  Curved glass used in automobiles, etc. is formed by heating and softening a flat glass plate to bend it. Therefore, the three-dimensional shape data of the window glass presented by the automobile manufacturer is developed into a two-dimensional flat shape. It is necessary to convert to coordinate data.

  When the shape of the flat glass plate developed in two dimensions is an irregular shape having a hypotenuse such as a substantially triangular shape or a substantially trapezoidal shape, input means for inputting outer peripheral coordinate data of the deformed glass to the arithmetic processing unit; Arithmetic processing means for calculating the optimum measuring pattern figure and base plate dimensions based on the input outer peripheral coordinate data, the read outer peripheral coordinate data and arithmetic processing result storage means, and display output for displaying the calculation result on the screen It consists of means.

  The input means inputs the data obtained by converting the three-dimensional three-dimensional shape data of the window glass presented by the automobile maker into two-dimensional development coordinate data of a flat shape by a computer as it is via a communication line, or a medium Alternatively, the XY coordinate data can be directly input from the display screen.

  Further, the arithmetic processing means sets an ear width adding figure obtained by adding an ear width which is the minimum folding width to the outer periphery of the reference figure of the deformed glass inputted by the input means of the information processing apparatus, and the ear width addition The figure is temporarily placed in the third quadrant or the fourth quadrant of the two-dimensional orthogonal coordinate system, and the ear width addition figure is moved at a constant pitch in the X-axis direction between the third and fourth quadrants, or the ear width addition figure Rotate at a certain angle at the approximate center, or move and turn at the same time, with the point O of Cartesian coordinates as the center of point symmetry, and the ear width addition figure and its point symmetry figure (in the first and second quadrants) The base plate figure having the smallest rectangular area surrounding the base plate) is taken as a base plate glass figure for taking two sheets.

  Thus, when preparing a base glass with the size of an irregular-shaped glass plate, what is necessary is just to prepare the base glass with the smallest area.

  Further, the storage means stores the peripheral coordinate data read by the input means, the optimum base plate size obtained by the arithmetic processing means, and the arrangement position coordinate information in the rectangular base plate glass of the deformed glass figure. Remember.

  When the rectangular base plate has a hypotenuse on the outer periphery of the outer shape figure of the deformed glass, the hypotenuses are brought into contact with each other in a direction that is point-symmetric with each other, and two variants are formed. When the glass is arranged as one set, there are many cases in which the area of the rectangle surrounding both the figure of the deformed glass and the figure arranged in point symmetry is minimized, but there may be cases where this is not necessarily the case.

  Furthermore, the display output means displays the optimal arrangement pattern of the outer shape of the deformed glass obtained by the arithmetic processing means on the display screen, and the coordinate data necessary for cutting is NC-cut according to the operator's confirmation instruction. It can also be transmitted to the machine.

  As shown in FIG. 4, the specific processing procedure of the arithmetic processing means is as follows.

  (1) First, an edge width addition graphic in which an edge width dimension that is the minimum folding width is added to the outer periphery of the reference figure of the deformed glass is set.

  (2) Plotting is performed so that all of the ear width addition figures fall within either the third quadrant or the fourth quadrant of the two-dimensional XY orthogonal coordinate system.

  (3) With the point O of the orthogonal coordinates as the center of point symmetry, the ear width addition figure and the point symmetry figure are plotted.

  (4) The plotted ear width addition graphic and the point symmetric graphic are surrounded by a rectangle having the minimum area, the area S is calculated, and is temporarily stored together with the coordinate data of each outer shape of the ear width addition graphic and the point symmetric graphic.

  (5) The minimum area of the rectangular area obtained up to the previous time is set as Smin, and is temporarily stored together with the coordinate data of each outer shape of the ear width addition figure and the point-symmetric figure at that time.

  (6) From the state where the entire ear width addition figure is in the third quadrant and in contact with the XY axis to the state in the fourth quadrant and in contact with the XY axis, the ear width addition is moved at a constant pitch in the X axis direction, and the ear width addition is performed. The figure is plotted and the processes (3) to (5) are repeated.

  (7) The ear width addition figure is turned at a constant angle about the center thereof, the ear width addition figure is plotted, and the processes (3) to (5) are repeated.

  (8) The base plate figure 4 at the minimum area Smin of the rectangle surrounding the edge width addition figure and its point-symmetric figure in (5) is used as a base board figure for taking two sheets, and is measured from the base plate. The arrangement coordinates of two deformed glasses calculated from the coordinates of the ear width addition graphic and the point-symmetric graphic are calculated together.

  (9) By rotating the center line passing through the point O of the two-sheet base plate so as to coincide with the Y-axis, a vertically or horizontally long rectangular base plate figure can be obtained, and they are point-symmetric with each other. The coordinates of the two deformed glasses can also be calculated.

  Next, the operation of the present invention will be described.

  If the irregularly shaped glass plate has a substantially triangular or trapezoidal hypotenuse, if two identical figures are arranged symmetrically so that the hypotenuses are brought together, the rectangular area surrounding them is one sheet. Although it is well known that the size is smaller than that measured by a rectangular glass plate and the switching loss is reduced, it is difficult to recognize which side of the irregularly shaped figure is a hypotenuse on a computer.

  According to the present invention, an ear width adding figure obtained by adding the minimum folding width to the outer shape data of the irregularly shaped glass is disposed below the X axis of the orthogonal coordinate system in an arbitrary direction, and a point O that is an intersection of the XY axes is The point-symmetric figure obtained as the center of point symmetry is arranged above the X-axis, the minimum value of the rectangular area surrounding the edge-width-added figure and the point-symmetric figure is sequentially calculated and stored, and the X-axis of the ear-width-added figure By recalculating the area of the point-symmetry figure that moves along with the movement of the direction and / or turning at the approximate center of the ear width addition figure and the rectangle that surrounds the ear width addition figure, the most area A two-piece base plate having a small rectangular shape can be easily set by a computer, and the position and orientation of the irregularly shaped figure can be obtained efficiently.

  In addition, when using raw glass already in stock, or when it is necessary to produce a plurality of glass with relatively similar sizes, a point-symmetrical position should be set at a position applicable to both sizes. Change it. In this case, it is not necessary to minimize the area.

  In addition, when measuring a very small irregular glass plate with a very small size for a side window for automobiles, the rectangular glass plate that is a set of two sheets is also a small size. As below, it may be smaller than the minimum size that can be cut and transported. For this reason, in such a case, a small-sized, generally triangular deformed glass plate may be cut from a large-sized base plate glass, for example, by taking four to twelve.

  For example, as shown in FIG. 3, when measuring eight irregular glass plates 1 from one rectangular base glass 4, the rectangular two glass plates 2 arranged symmetrically in a point-symmetric manner. What is necessary is just to set it as the base-plate size which arranged one sheet-sheet base glass one by one in the vertical direction and the horizontal direction in total.

  Such a large-sized base plate of eight sheets is cut vertically and horizontally to form a rectangular base plate glass composed of two different-shaped glass plates arranged point-symmetrically between the two different-shaped glass plates. If it cuts diagonally in the oblique line position which is a boundary line, it is possible to obtain a glass plate that becomes a base plate of deformed glass having an ear portion having a minimum plate width that can be folded.

  The preferred embodiment has been described above, but the present invention is not limited to this.

  In the present invention, the figure of the irregularly shaped glass plate is plotted between the third and fourth quadrants of the orthogonal coordinate system, moved in parallel to the X axis, and the point symmetric figure is formed with the point O as the center of point symmetry. Plotted in the first and second quadrants, but the figure of the deformed glass plate was plotted between the first and fourth quadrants of the Cartesian coordinate system, moved parallel to the Y axis, and the point O as the center of point symmetry, You may make it plot a point-symmetric figure in the 3rd, 2nd quadrant.

  In the present invention, the above method is processed by computing using a computer.

  The present invention relates to a technique for obtaining, by calculation, a base plate that minimizes a switching loss when measuring two irregularly shaped glass plates used for a side window glass of an automobile from a rectangular base plate glass.

The measurement pattern figure which shows the figure of the unusual shape glass plate plotted on the rectangular coordinate system, the figure which added the minimum folding width, and the rectangular base-plate figure surrounding the point symmetrical figure. The measurement pattern figure which shows the state which the figure of the unusual shape glass plate plotted on the orthogonal coordinate system, the figure which added the minimum folding width, and the rectangular base-plate figure surrounding the point-symmetric figure become the minimum area. The pattern figure which arranged 4 sheets of rectangles which made 2 sheets of unusual shape glass sheets 1 set, and took 8 sheets. The flowchart of the measuring method for calculating | requiring the minimum area of this invention.

Explanation of symbols

1a, 1b, 1c irregular shape glass figure 2a, 2c ear width addition figure 3a, 3b, 3c point symmetrical figure 4a, 4b, 4c rectangular base plate figure

Claims (2)

In a method of measuring by taking two deformed glass plates in which the shape of the side window of an automobile is developed two-dimensionally from a rectangular base glass, input means for inputting outer peripheral coordinate data of the deformed glass to an arithmetic processing unit, and the input Calculation processing means for calculating the optimum measurement pattern figure and base plate dimensions based on the outer peripheral coordinate data, storage means for the read outer peripheral coordinate data and calculation processing results, and display output means for displaying the calculation results on the screen Become
The arithmetic processing means is provided with an ear width addition figure obtained by adding an ear width as a minimum folding width on the outer periphery outside the reference figure of the deformed glass, and the ear width addition figure is represented by an X axis and a Y axis of a two-dimensional orthogonal coordinate system. Is fixed along the X axis or the Y axis of the ear width addition graphic in the direction of any one of the quadrants adjacent to the quadrant where the ear width addition graphic is plotted. Each time the parallel movement at the pitch and the turning at a fixed angle with the approximate center of the ear width addition figure as the rotation axis are performed, the ear width addition figure is re-plotted and the orthogonal coordinate system When plotting a point-symmetric figure of the above-mentioned ear width addition figure with the origin of the point symmetry as the center of point symmetry, calculating a rectangle surrounding the above-mentioned ear width addition figure and the point symmetry figure with a minimum area, and when the area becomes the minimum the rectangle of glass material for two picking of Measuring method of deformed glass raw sheets, characterized in that the form. The above-mentioned point-width-added figure arranged symmetrically and the rectangular two-piece base board figure surrounding the point-symmetric figure are arranged in parallel vertically and horizontally to form a multiple-piece base board figure. The measuring method of the base plate for deformed glass according to claim 1.

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