JPH03210979A - Method and device for setting laser beam machining condition - Google Patents

Abstract

PURPOSE:To automatically set the optimum laser beam machining conditions by setting and outputting the machining conditions for a shape pattern corresponding to an actual program shape by retrieving from a prepared actual program shape and a shape pattern of the degree of difficulty and easiness registered in advance. CONSTITUTION:In order to cut a product which is formed into a specified shape from a plate, material, thickness, etc., of the plate are inputted to a program shape preparing means 5 to prepare the actual program shape 7. The shape pattern of the degree of difficulty and easiness is registered in advance on a shape pattern determination table 9 of the degree of difficulty and easiness. The actual program shape 7 prepared by the program shape preparing means and the shape pattern corresponding to the actual program shape 7 retrieved from the shape pattern of the degree of difficulty and easiness registered in advance on the shape pattern determination table of the degree of difficulty and easiness are taken in a shape determinating means 11 to carry out determination. The optimum machining conditions are then set easily in a short time and besides automatically.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention provides a laser beam that sets processing conditions that match the programmed shape when cutting a product into a predetermined shape from a plate material by laser processing. The present invention relates to a method for setting machining conditions and an apparatus therefor.

(Prior art) Conventionally, when cutting a product into a predetermined shape from a plate material by laser processing, the material and thickness of the plate material to be processed are first selected, and then the predetermined shape to be cut into the selected plate material is cut. A program shape is created by a program shape creation means. Then, while viewing the actual program shape created by this program shape creation means, the operator sets the actual machining conditions, relying on past experience and intuition.

Further, trial cutting is performed in advance based on the set processing conditions, and after the operator judges whether the set processing conditions are optimal, the actual laser processing is performed.

(ff1li that the invention seeks to solve) By the way, in the conventional method of setting machining conditions described above, the operator relies on his or her past experience and intuition, so it takes a lot of time and effort to set the optimal machining conditions. The problem was that it was time consuming. Therefore, it has not been possible to automatically set optimal processing conditions.

In order to improve the above-mentioned problems, the purpose of the present invention is to provide a laser processing method that makes it possible to easily and quickly set optimal processing conditions without relying on the operator's experience and intuition. An object of the present invention is to provide a method for setting processing conditions and an apparatus for the same.

In order to achieve the above object, the present invention creates an actual program shape to cut into a predetermined shape when cutting a product into a predetermined shape from a plate material by laser processing, and The program shape is compared with the difficulty shape pattern registered in advance in the difficulty shape pattern determination table, and when the actual program shape is determined to be the difficulty shape pattern, the machining conditions for the difficulty shape pattern are changed.
Moreover, when it is determined that the pattern is a temperature shape pattern, processing conditions for the easy shape pattern are set and output.

The present invention also provides a program shape creation means for creating an actual program shape for cutting a board into a predetermined shape, a difficulty shape pattern determination table in which difficulty shape patterns are registered in advance, and the program creation means. a shape determining means for comparing and determining the actual program shape created by the difficulty shape pattern with the difficulty shape pattern registered in the difficulty shape pattern determination table; and a shape determining means for determining the actual program shape as the difficulty shape pattern. A processing condition setting device for laser processing is provided with a processing condition table for searching the processing conditions for a difficult shape pattern when a temperature shape pattern is determined, and the processing conditions for an easy shape pattern when it is determined to be a temperature shape pattern.

(Function) By employing the laser processing processing condition setting method and device of the present invention, the material, thickness, etc. of the plate can be input to the program shape creation means in order to cut a product into a predetermined shape from the plate. Create the actual program shape. Difficulty level shape patterns are registered in advance in the difficulty level shape pattern determination table.

Shape determining means searches for the actual program shape created by the program shape creation means and the difficulty shape patterns registered in advance in the difficulty shape pattern determination table and selects a shape pattern that matches the actual program shape. It is taken into account and judged. That is, when the actual program shape is determined to be a difficult shape pattern, the machining conditions for the difficult shape pattern are searched from the machining condition table, and when the actual program shape is determined to be a temperature shape pattern, the machining conditions for the easy shape pattern are output. .

Therefore, optimal processing conditions can be easily and quickly set automatically without relying on the experience and intuition of the operator.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

Referring to Figure 1, processing condition setting bag W1 for laser processing
is the input device 13. Program shape creation means 5. Actual program shape/memory 7, difficulty level shape pattern judgment table 9. Shape determination means 11° Processing condition table 13
and an output device 15.

That is, the input device 3 includes, for example, a keyboard, a paper tape reader, etc., and is used to input the material and thickness of the plate material W, necessary program data, and the like. A program shape creation means 5 is connected to this input device 3, and the program shape creation means 5 uses the material, thickness, and necessary program data of the plate material W inputted from the input bag W3, for example, as shown in FIG. A cutting path for laser processing is created as shown in .

That is, in FIG. 2, starting from the starting point Sp of the plate material W, the product G is cut by laser processing by first passing through the mountain shape A, the uneven shape B, and then passing through the small hole shape C and the slit shape. The cutting path and program shape are then created.

An actual program shape/memory 7 is connected to the program shape creating means 5, and the actual program shape/memory 7 stores the actual program shapes created by the program shape creating means 5, such as a mountain shape A, unevenness, etc. Shape B
, the small hole shape C and the slit shape are temporarily stored.

The actual program shape/memory 7 and difficulty level shape pattern determination table 9 are connected to shape determination means 11. As shown in FIG. 3, the difficulty level shape pattern determination table 9 includes, for example, material spc, plate thickness 1. A plate material W consisting of Ot has a mountain shape a of a difficulty level shape pattern for judgment,
It has an uneven shape.

A small hole shape C and a slit shape d are registered in advance.

The shape determining means 11 determines the actual program shape stored in the actual program shape memory 7;
The difficulty level shape patterns registered in the difficulty level shape pattern determination table 9 are compared and determined.

A machining condition table 13 is connected to the shape determining means 11, and an output device 15 is connected to the machining condition table 13. For example, the machining condition table 13 includes the fourth
As shown in the figure, optimal processing conditions are searched and set based on the results determined by the shape determining means 1, and an output device W such as a CRT or paper tape punch is used.
15. The optimal processing conditions outputted to the output device 15 are outputted to and stored in, for example, an NC device that controls the laser processing device, and are used in actual laser processing.

Next, the operation of the method for setting processing conditions for laser processing will be explained based on the flowchart shown in FIG. In FIG. 5, in step S1, the material, thickness, and necessary program data of the plate material W are inputted into the program shape creation means 5 using the human power device 3.

In step S2, the program shape creating means 5 programs a machining path as shown in FIG. 2 and obtains a program shape.

In step S3, the actual program shape created by the program shape creation means 5 and the difficulty shape pattern as shown in FIG. It will be done. In step 4, the chevron shape A and the chevron shape a are compared. That is, if the angle α of the chevron is α≦20″, the chevron shape A is determined to be a difficult shape pattern in step S5, and the machining condition E for the difficult shape pattern is retrieved from the machining condition table 13 shown in FIG. In step S4, the angle α is
If not ≦20 (α>20″), the mountain shape A is determined to be a temperature shape pattern in step S6, and the machining condition E2 for ease of shape pattern is retrieved from the machining table 13 shown in FIG.

Next, in step S7, the uneven shape B and the uneven shape S are compared. That is, if β is β≦t (β: convex width, t: plate thickness), step s9 is executed, and if β is not β≦t (
β>t), and in step S8 it is determined whether β/γ≧1 (γ=concave width). If β/γ≧1, step S
9, the uneven shape B is determined to be a difficult shape pattern in step S9, and the machining condition E3 for the difficult shape pattern is searched from the machining condition table 13 shown in FIG. If β/γ≧1 in step S8 (β/γ 1)
In step SIO, the uneven shape B is determined to be a 5 degree shape pattern, and the machining condition E4 for easy shape pattern is searched from the machining condition table 13 shown in FIG.

In step Sll, the small hole shape C and the small hole C are compared.

That is, if 2r≦t (r: radius), step S1
In step 2, the small hole shape C is determined to be a difficult shape pattern, and the machining condition E5 for the difficult shape pattern is retrieved from the machining condition table 13 shown in FIG. 2r≦t at step Sll
Otherwise (2r>t), the small hole shape C is determined in step S13.
is determined to be a temperature shape pattern, and the machining condition E6 for ease of shape pattern is searched from the machining condition table 13 shown in FIG.

Next, in step S14, the slit shape and the slit shape d are compared. That is, if P≦nt (P nislit width, n: coefficient), in step 16, P≦n
If not t (Pant), in step 515 beans≧nt
(length of 41 nislits). If further≧nt, the process proceeds to step S16, and in step S16, the slit shape is determined to be a difficult shape pattern, and the machining condition E7 for the difficult shape pattern is retrieved from the machining condition table 13 shown in FIG. If hair≧nt is not determined in step S15 (i<nt), the slit shape is determined to be a temperature shape pattern in step S17, and processing conditions E for temperature shape pattern are retrieved from the processing condition table 13 shown in FIG. be done.

In step S18, steps 5, 6, 9, 10°12.
13. The optimum processing conditions based on each shape searched in 16 and 17 are outputted to the output device 15, and further transferred to, for example, an NC device of a laser processing device, whereby actual laser processing is performed.

As can be seen from the above-described operations, the optimum processing conditions suitable for each shape can be easily and quickly set automatically without relying on the operator's experience and intuition.

Note that this invention is not limited to the embodiments described above, and can be implemented in other forms by making appropriate changes. In this embodiment, a chevron shape, an uneven shape, a small hole shape, and a slit shape have been described as the program shape, but other program shapes with multiple fibers are more effective. In addition, in this example, the difficulty level shape pattern is simply determined by either difficulty or quality.
Although the explanation has been made in terms of stage determination, it is even more effective if the determination is performed in multiple stages of three or more stages.

[Effects of the Invention] As can be understood from the above description of the embodiments, according to the present invention, in order to cut a product having a predetermined shape from a board, the program shape creation means is configured to include information such as the material of the board, the shape of the board, etc. Enter to create the actual program shape. Difficulty level shape patterns are registered in advance in the difficulty level shape pattern determination table.

Shape determining means searches for the actual program shape created by the program shape creation means and the difficulty shape patterns registered in advance in the difficulty shape pattern determination table and selects a shape pattern that matches the actual program shape. It is taken into account and judged. That is, when the actual program shape is determined to be a difficult shape pattern, the machining conditions for the difficult shape pattern are retrieved from the machining condition table, and when the actual program shape is determined to be a 5 degree shape pattern, the machining conditions for the easy shape pattern are output. Ru.

Therefore, optimal processing conditions can be easily and automatically set in a short time without relying on the experience and intuition of the operator.

[Brief explanation of drawings]

The first factor is a block diagram of the configuration of a machining condition setting device for laser machining.
The figure is an example of the difficulty level shape pattern registered in advance in the difficulty level shape pattern determination table, Figure 4 is an example of the optimum machining conditions suitable for each shape filed in the machining condition table, and Figure j115 is the laser 3 is a flowchart illustrating the operation of a method for setting machining conditions by machining. 1... Processing condition setting device 3... Input device 5...
Program shape creation means 7...Actual program shape/memory 9...Difficulty level shape pattern determination table 11...Shape determination means
13... Processing condition table 15... Output device Fig. 2 Fig. 5

Claims (2)

[Claims] (1) When cutting a product into a predetermined shape from a plate material by laser processing, an actual program shape is created in order to cut into the predetermined shape, and the difficulty level shape pattern is determined in advance with the created actual program shape. Compare the difficulty shape patterns registered in the table, and if the actual program shape is determined to be a difficulty shape pattern, use the machining conditions for the difficulty shape pattern, and if it is determined to be an easy shape pattern, use the easy shape pattern. A method for setting processing conditions for laser processing, characterized by setting and outputting processing conditions for use. (2) A program shape creation means for creating an actual program shape to cut a board into a predetermined shape, a difficulty shape pattern determination table in which difficulty shape patterns are registered in advance, and the program shape creation means. a shape determining means for comparing and determining the actual program shape and a difficulty shape pattern registered in a difficulty shape pattern determination table; A machining condition setting device for laser machining, comprising a machining condition table for retrieving machining conditions for a difficult shape pattern when the shape pattern is determined to be an easy shape pattern, and for retrieving machining conditions for an easy shape pattern when the shape pattern is determined to be an easy shape pattern.