JPH03221278A - Method for designing bridge in laser beam machining and device for supporting design thereof - Google Patents

Abstract

PURPOSE:To easily and quickly execute design of a bridge by assigning bridge setting direction to a line segment assigning direction. CONSTITUTION:A device for supporting the design of bridge provides a storing means 8 for storing bridge width W as parameter, a storing means 1 for storing machining shape data for laser beam machining, a displaying means 3 for displaying product graphic as the base stored in the above storing means 1, an inputting means 6 for assigning any one direction among three ways of bridge setting directions at right, left and middle parts to two point coordinates Pi, Pj and the line segment (l) for regulating the line segment (l) in order to design the bridge at between the products displayed on the displaying means 3 and an arithmetic means 7 for calculating the bridge having the width W stored in a bridge parameter stored part at between the products passing the line segment based on the two point coordinate and the bridge setting direction inputted from the inputting means 6.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the invention] (Industrial application field) The present invention provides a relatively narrow bridge between products to be cut by laser processing to prevent the products from being separated. Regarding the bridge design method and its design support device in laser processing for designing, especially the ease of bridge design,
It is designed to be done quickly.

(Conventional technology) When laser processing punched dials, signboard characters, etc.
It is necessary to connect the products with a bridge so that the product parts as character components are not separated from other product parts.

Conventionally, the design of this type of bridge had to be specified on a drawing showing the processed shape, which required a lot of effort and time to create.

In other words, it was necessary to cut out the processed shape that would become the product at the position where the bridge was to be placed, and write a new bridge there.

Alternatively, when processing drawings read in with an image scanner using a design support device (CAD), display the machining shape, specify the four intersection points between the product and the bridge, and I had to delete the line segment by the width of the bridge.

The drawings designed in CAD in this manner are sent to CAM, and provided as an NC program to the control device (NC device) of the laser processing machine.

(Problem to be Solved by the Invention) However, in the conventional bridge design method as described above, the preprocessing of the drawing is difficult in the method of writing the bridge on the drawing, and the Even if the shape data were processed using CAD, there was a problem in that subsequent processing was difficult.

Therefore, the present invention provides a bridge design method and design support device for laser processing, which allows bridge parts to be easily and quickly designed in laser processing for designing bridges between products such as punched dials and signboard characters. The purpose is to provide.

[Structure of the Invention] (Means for Solving the Problems) The present invention for solving the above problems is a bridge in laser processing that designs a relatively narrow bridge to prevent separation between products cut by laser processing. In the design method, by specifying a line segment with a specified direction and three bridge setting directions for this line segment: left, right, and center, it is possible to set a bridge with a predetermined width in the specified bridge setting direction for the specified line segment. The present invention is characterized in that a predetermined width of the bridge is set as a parameter in advance as a rule, and the bridge is automatically designed by inputting the line segment and the bridge setting direction.

Further, the line segment is defined by inputting the coordinates of two points, and its direction is a direction connecting a point inputted first to a point inputted later.

Furthermore, in a laser processing processing shape design support device that designs a processing shape including a relatively narrow bridge to prevent separation between products to be cut by laser processing, a bridge parameter that stores the bridge width as a parameter is used. A storage means, a shape data storage means for storing processing shape data for laser processing, a display means for displaying a basic product figure stored in the storage means, and a bridge between the products displayed on the display means. input means for specifying two-point coordinates for defining a line segment for design and one of three bridge setting directions, left, right, and center with respect to the line segment; input from the input means; The present invention is characterized by comprising a calculation means for calculating a bridge having a width stored in the bridge parameter storage unit between products passing through the line segment based on the two-point coordinates and the bridge setting direction.

(Function) In the bridge design method in laser machining and its support device of the present invention, a bridge can be automatically designed by specifying a setting direction for a line segment whose direction has been specified.

In this case, if the line segment is a line segment that connects the coordinates of two points input sequentially, the bridge can be designed easily and quickly by inputting only two points and a setting direction.

(Example) Referring to FIG. 1, the support device includes a storage unit 1 that stores laser processing shape data inputted from a drawing input device such as an image scanner as vector data. It is equipped with

The storage section 1 is connected to a data processing section 2, and to this processing section 2, a display device 3, an input device 6 including a keyboard 4 and a mouse 5, and a bridge calculation section 7 are connected. A bridge parameter storage section 8 is connected to the bridge calculation section 7 .

The display device 3 is for displaying the laser-processed shape. The input device 6 is for specifying coordinate values and directions based on operations on the keyboard 4 and mouse 5.

Further, in the bridge parameter storage section 8, the width dimension of a bridge to be designed from now on is set as a parameter. The data processing section 2 communicates data with the connecting members and searches for and provides required data to the required members.

The bridge calculation unit 7 applies the data input from the input device 6 to the shape data stored in the laser processing shape memory unit 1, and automatically designs a bridge having the width specified in the bridge parameter storage unit 8. be.

In FIG. 2, in step 201, the parameter of the bridge width W is set, a basic figure for which no bridge has been set is displayed, and the bridge design conditions are specified in step 203, and a concrete bridge is calculated in step 204. , step 205, the figure to which the bridge has been added is stored.

To give a specific example, in the product figure shown in FIG. 3, in step 203, the starting point Pi (PH,
P3. P5. P7. P9. pH) and end point Pj (P2
, P4. Pa, Pa, PIO, PH2) are input, and the bridge setting direction (left, right) is input for the line segment.

(center) is input, the bridge calculation unit 7 calculates a bridge in step 204 using the method shown in FIG.

The product shown in Figure 3(a) has the kanji ``kai'', the third
The product shown in Figure (b) is an example in which the hiragana "su" is laser-processed as a signboard character. In this example, the inner and outer parts that make up the character "kai" and the mutually separated parts that make up the character "su" are both referred to as "products."

In Figure 4, when the bridge designation input specifies a line passing through the starting point Pi and ending point Pj, pointing from the starting point Pi to the ending point Pj, and the setting direction is specified as left (right), the specified A straight line is set by setting the length of the line segment and the width W determined by the parameter in the specified setting direction for this line segment, and the points Pi and Pj, the figure in the vicinity of this point, and the straight line! Find the intersection with L-, and calculate the bridges 9L and PR as shown in FIG. 5(b). The subscript L indicates that it is set on the left side of the line segment, and the subscript R indicates that it is set on the right side.

On the other hand, if the bridge setting direction is specified as the center for the line segment, two parallel straight lines are set with a width of W/2 on both sides centering on the intersection of the line segments, and these The intersection between the line and the product is determined, and a bridge 9C is calculated as shown in FIG. 5(a).

Therefore, the operator can design a bridge for the shape shown in FIG. 3 by simply selecting and specifying the starting point Pi and ending point Pj as shown in FIG. 3 and the bridge setting direction from the input device 6.

At this time, for example in FIG. 3(C), if it is desired to design a bridge in the central part, it is only necessary to specify the center point of the figure, so the input operation is easy. In addition, Fig. 3 (b
), if you want to design a bridge at the end of the shape,
Since it is only necessary to specify the end point, the input operation is easy.

In the above embodiment, the line segment is defined by the starting point Pi and the ending point Pj of the bridge, but these points may be points that define the area including the bridge to be designed on the extension line of the bridge.

That is, as shown in FIG. 6, starting point Qi (QQ3.Q
5. Q7) and end point Qj (Qj, Q4, Q6.Qll)
may be determined, and the bridges 9L, 9R, and 9c that connect the products may be calculated in the area included between the starting point Qi and the ending point Qi.

In this case, as shown in FIG. 6(a), it is convenient to be able to specify a plurality of bridges at once in a straight line.

However, even in this case, it is necessary to specify a line segment rather than a straight line in order to avoid accidentally designing a bridge on all other figures that intersect with a straight line.

The present invention is not limited to the above embodiments, but can be implemented in any appropriate manner by making appropriate design changes.

[Effects of the Invention] As described above, according to the bridge design method in laser processing and its support device of the present invention, a bridge can be designed by specifying a bridge setting direction for a line segment whose direction has been specified.

In this case, if you define the line segment as a line segment that connects the coordinates of two points that are input sequentially, you can omit the special specification of the line segment direction and easily and quickly bridge the bridge by just inputting the two points and the bridge setting direction. can be designed.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a laser processing shape design support apparatus according to an embodiment of the present invention, FIG. 2 is a flowchart of a bridge design method thereof, and FIG. 3(a). (b) is an explanatory diagram of the product shape, Fig. 4 (a), (b) (C
) are explanatory diagrams of the bridge calculation method, Figures 5(a) and (b)
are explanatory diagrams of the designed bridge, Figures 6(a) and (b)
is an explanatory diagram showing another input method for line segments. , 9R, 9L, 9C...Designed bridge Pi, Q
i...Start point of line segment Pj, Qj...End point of line segment

Claims (3)

[Claims] (1) In the bridge design method for laser processing, in which a relatively narrow bridge is designed to prevent separation between the products to be cut by laser processing, a line segment with a specified direction and the left, right, and center It is a rule that a bridge of a predetermined width is set in a specified bridge setting direction for a specified line segment by specifying three types of bridge setting directions, and the predetermined width of the bridge is set as a parameter in advance, and the line segment and A bridge designing method in laser processing, characterized in that the bridge is automatically designed by inputting the bridge setting direction. (2) Laser processing according to claim 1, characterized in that the line segment is defined by inputting coordinates of two points, and the direction thereof is a direction connecting a point inputted first and a point inputted later. Bridge design method in. (3) A bridge that stores the bridge width as a parameter in a laser processing processing shape design support device that designs processing shapes including relatively narrow bridges to prevent separation between products to be cut by laser processing. a parameter storage means; a shape data storage means for storing processing shape data for laser processing; a display means for displaying a basic product figure stored in the storage means; and a bridge between the products displayed on the display means. an input means for specifying two-point coordinates for defining a line segment for designing a line segment, and one of three bridge setting directions, left, right, and center, with respect to the line segment; Laser processing characterized by comprising a bridge calculation means for calculating a bridge having a width stored in the bridge parameter storage unit between the products passing through the line segment based on input two-point coordinates and a bridge setting direction. A design support device for machining shapes.