JPH011005A - Numerical control data creation device for 3D machining - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to three-dimensional machining that creates numerical control data for three-dimensional addition (hereinafter referred to as NC data for three-dimensional machining) based on two-dimensional numerical control data. The present invention relates to a numerical control data creation device for use.

[Prior Art] FIG. 7 is a schematic diagram of a laser processing machine that performs three-dimensional processing based on three-dimensional NC data. In Figure 7, (1
) is the base of the laser processing machine, (3) is the table stand driven in the X-axis direction by the X-axis drive motor (2) attached to the base (1), and (4) is the Y-axis drive motor. (not shown)
) is a gate-shaped frame, (6) is a cover for the lifting body that moves up and down in the Z-axis direction (vertical direction) by a Z-axis drive motor (not shown), and (7) is a motor (not shown) for the Z-axis. around the axis (hereinafter,
The rotating body (8) is capable of rotating around an axis perpendicular to the Z-axis (hereinafter referred to as the A-axis), and (9) is provided at the tip of the rotating body (8). The laser processing head (10) is a CO laser shaker, (11
) is a refractive part with a built-in reflecting mirror inside, a laser beam guide tube that connects the laser pressurizing head (9) and the CO2 laser oscillator, and (12) is a numerical control device (hereinafter referred to as NC control device). , (13) is a teaching box.

As shown in FIG. 8, the teaching box (13) moves the laser pressurizing head (9) in the
Axial direction movement switch (14) for moving in the axial direction, A-axis direction and C-axis direction, for laser processing / (9)
A coordinate value teaching switch (15) for inputting the position after movement as a coordinate value, an indicator (16) that displays the step value (coordinate value) = 9 manually input by the coordinate value teaching switch (15), and processing data. A data call switch (17) for calling the data and an end switch (188) are provided.

This teaching box (13) is the N
It is connected to the C control device (12). In FIG. 9, (+9) is the central processing unit (hereinafter referred to as CPU),
(20) is the pass line, (21) is the main memory (22),
hl? from the coordinate value memory (23) for storing coordinate values and the NC data memory (24). A storage device made up of (
25) is a servo controller that drives the servo amplifier, (
2G) is a servo motor.

This NC control device (12) actually moves the laser machining head (9) along the machining shape of the corrugated workpiece, teaches the movement trajectory of the laser machining head (9), and performs three-dimensional NC processing.
Create data and move the laser processing head (9) in the X-axis direction, Y-axis direction, X-axis direction, A-axis direction, or C-axis direction based on this 3D NC data to process the corrugated object. It is something to do.

' Regarding the creation of three-dimensional NC data, that is, the three-dimensional NC data necessary to drive the laser pressurizer shown in Fig. 6,
This will be explained with reference to the flowchart shown in FIG.

(1) Step S1 The operator operates the axial movement switch (14) or the coordinate value teaching switch (15) of the teaching box (13) to determine the direction in which the laser processing head (9) should be moved or the direction after the movement. Enter location.

(2) Steps 82 to S5 The CPU (19) determines whether the axial direction movement switch (14) was operated by the teaching box (+3) (step S2) or whether the coordinate value teaching switch (15) was operated (step S3), processing data call switch (1
7) It is determined whether the end switch (1813) has been operated (step S4) or whether the end switch (1813) has been operated (step S5).

(3) Steps 86 to S7 When the axial movement switch (14) is operated, the CPU (+9) moves the laser pressurizing head (9>). Drive the servo motor (2G) and move the axial movement switch (
I4) by driving the axis corresponding to the laser pressurizing head (
9) in a predetermined axial direction (step S6)
, the coordinate values are stored in the coordinate value memory (23) (step S7).

(4) Steps 88 to S9 When the coordinate value teaching switch (15) is operated, the CPU (19) reads the coordinate values from the coordinate value memory (23) and converts the read coordinate values into three-dimensional NC data. That is, the coordinate values are converted into a movement command for the laser processing machine (step S8) and stored in the NC data memory (24) (step 89).

(5) Steps 810 to 811 After inputting teaching position information (coordinate values), calling another program whose start position is the taught position to create a main program that can be executed by the NC control device (12). , the processing data call switch (17) is pressed. When the NC control device (12) confirms this human power, the CP
U (19) is the processing data number manual numeric keypad (
18) is waiting for numerical input, and when the numerical value is entered manually, the processed data calls the Canadian program by specifying the number of the Canadian program registered in the NC data memory (24) with a number from 1 to 9999. A number input process is entered (step 510), and an executable main program is created by calling other subprograms (the NC data itself that performs three-dimensional processing stored in the NC data memory (24)). Store the main program in the NC data memory (24) (step SLI
).

In addition, the display (16) which was displaying the number of times of teaching changes all the displayed values to O, and displays the number of the subprogram to be manually input by the operator, so that it can be confirmed.

(6) Steps S12 to 513 When the end switch (18B) is operated, the CPU (19) ends the teaching operation (step 512). The CPU (+9) also operates an axial movement switch (14), a coordinate value teaching switch (15), a machining data call switch (17), or an end switch (18).
If an operation other than B) is performed, an error process is performed to notify the operator of the operational error by, for example, sounding a buzzer (step S13).

[Problems to be Solved by the Invention] By the way, the NC control device (12) that creates three-dimensional NC data for driving the laser processing machine actually moves the laser processing head (9) and Head (9)
Since the three-dimensional NC data was created by teaching the movement trajectory of the robot, it took time to teach, and when a particularly complicated movement trajectory was taught, there was a problem in that the operating rate decreased significantly.

The present invention has been made to solve the above problems,
It is an object of the present invention to provide a numerical control data creation device for three-dimensional machining that creates three-dimensional NC data from two-dimensional NC data without teaching.

[Means for solving the problems] The numerical control data creation device for three-dimensional machining according to the present invention has the following features:
The X-axis and Y of a three-dimensional orthogonal coordinate system with the radial direction x-y-Z
For a point P'(x',y') on the Xo-Zo 14 plane, which is the expanded side surface of a cylinder of radius R placed so that the central axis direction coincides with the Z axis, x-y-Z゛3
The point x = R sin θ, y = R (1 - cos θ), 2 y' in the orthogonal coordinate system, and the angle c - 3 (io x x' / 2 yr R (however,
The angle θ is the rotation angle around the Z axis), which is the three-dimensional data P (x
, y, z, c).

[Function] The three-dimensional machining numerical control data creation device with the above configuration has three
The dimensional data creation means is the point P'(x'
, y') in the x-y-Z three-dimensional orthogonal coordinate system, x=Rslnθ, y=R(1-cosθ), 20y.

Create three-dimensional data with c = 3[io x x'/2πR.

[Embodiment Code] An embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of the main parts of a numerical control data creation device for three-dimensional machining according to the present invention. In Figure 1,
(19) is a CPU that executes a program specifically corresponding to the flowcharts shown in FIGS. 2 and 3, (20) is a pass line, (21) is a main memory (22), a coordinate value memory (23), and an NC A storage device consisting of a data memory (24), (25) a servo controller, (
26) is a servo motor.

Next, regarding the operation of the numerical control data creation device for three-dimensional machining according to the present invention, we will discuss the operation of the upright cylinder (
For example, rMI on the side of something shaped like a canned can.
An example of creating three-dimensional NC data necessary for cutting out the character TJ (see FIG. 4(e)) will be described with reference to the flowcharts of FIGS. 2 and 3.

(1) Step SI CPU (19) creates two-dimensional NC data using CAM software such as the APT language method. This two-dimensional N
As shown in Fig. 4(b), the C data has a -side length a
, the length of the other side is b. These are the coordinate values necessary to form the character string MITJ. In other words, the two-dimensional N
As shown in Fig. 6, the C data includes each point P', P'2, P'3, ■ "4'5'6'7'8"'9"'to of the character string rMI TJ.
'P'P'P'P' P°・”12・13・P′14・P°15・P゛1
G・P°17・11P.

P'P'P' , P' , P' ,
18ゝ of P' and P°24! 9ゝ 20 21
22 23 coordinates, the lower left of the rectangle is the origin 0 of the X-Y plane! The east marker value is expressed as follows.

P'(X',y', ), P' (X
'y') 2424" 24 This rectangle is created by cutting the side surface of the cylinder along a line segment parallel to the central axis of the cylinder and developing this side surface into a two-dimensional flood surface, as shown in Figure 4(b). Match things.

That is, if the radius of the cylinder is R1 and the height of the cylinder is H, then ax
It becomes 2πR −H.

(2) Step S2 The CPU (+9) stores the created two-dimensional NC data in a memory.

(3) Step S3 CPU (+9) performs cylindrical surface transformation on the two-dimensional NC data to create three-dimensional NC data.

(a) Step 531 '3-dimensional NC created using the file name and 2-dimensional NC data when the 2-dimensional NC data is stored in memory
Manually name the data file.

(L)) Step 532 CPU (19) checks that the C axis does not exceed ±180° when converting the two-dimensional NC data into three-dimensional NC data.

(e) Step 833 The CPU (+9) calls the two-dimensional NC data file using the file name used when the two-dimensional NC data was stored in the memory, and reads out only one block.

(rl) Steps 834 to 838 The CPU (19) analyzes the two-dimensional NC data (step S34), and when the two-dimensional NC data is a straight line (
Step S35), 3-dimensional NC data is created based on this 2-dimensional NC data (step 536). 3
The dimensional NC data is expressed as coordinate values in an X-Y-Z space whose origin is 0, which is the position where a certain point on the side surface of the cylinder touches the bottom surface of the cylinder.

That is, given two-dimensional NC data P"(x", y'),
Corresponding 3D NC data P (x, y, z, c)
is expressed by the following general formula.

x=Rsi mouth θ y=R(1-cos θ) 2 ends y.

C error θ θ−3GOXx'/2πR ■ (Tatashi, n-1 to 24). Therefore, P (
x + ° yl"I 11
・θ)・θ+ −:360 x x' +
/ 2πR1P(x, y, λ・Z I,・θ2)θ
2=360×X'1. /2πR1 P(x, y, z, θ), θ24 = 3bOX x' 24/ 2 W R.

Further, when the two-dimensional NC data is an arc (step S37), the CPU (19) divides it into a plurality of straight lines (step 338) to create three-dimensional NC data (step 83G).

Further, when the two-dimensional NC data is neither a straight line nor an arc, but is an auxiliary code such as an M code, the CPU (19) proceeds to step S40.

Furthermore, if the two-dimensional NC data is neither a straight line nor an arc nor an auxiliary code, the CPU (19) displays an error (step 542).

(c) Step 540 CPU (+9) repeatedly executes steps 333 to S41 until there is no more two-dimensional NC data to be read.

(3) Step S4 CPU (19) stores the created three-dimensional NC data in the coordinate value memory.

(4) Step S5 The CPU (19) executes the three-dimensional NC data and performs an operation check to confirm whether the machine operates correctly.

(5) Step S6 CPU (19) ends the process if the operation check shows no abnormalities. If there is an abnormality, proceed to step St.

In this embodiment, a case has been described in which three-dimensional NC data for cutting the cylindrical side surface is created, but the same can be done in the case of creating three-dimensional NC data for marking processing.

Further, the two-dimensional NC data can be used for trimming conversion even if the software is not based on the APT language method, as long as it is capable of creating two-dimensional NC data.

[Effects of the Invention] As explained above, according to the present invention, the three-dimensional data creation means generates the x-y-Z data corresponding to the point P'(X',y') on the Point P(x, y
, z, c) as x=Rsinθ, y=R(1-cosθ), z -y' c-3GOXx/2πR, so we can actually use the laser processing head etc. Compared to the conventional numerical control data creation device for 3D addition, which creates 3D NC data by moving the robot and teaching the movement locus, 3D NC data can be created in a short time.
This has the effect of providing a numerical control data creation device for three-dimensional machining that can create dimensional NC data.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a numerical control data creation device for three-dimensional machining according to the present invention, and FIGS. 2 and 3 are flowcharts showing the operation of the numerical control data creation device for three-dimensional machining shown in FIG. 4, 5, and 6 are explanatory diagrams of two-dimensional NC data and three-dimensional NC data created by the numerical control data creation device for three-dimensional machining shown in FIG.
The figure is a schematic diagram of a laser processing machine that performs three-dimensional processing, Figure 8 is an explanatory diagram of the teaching box shown in Figure 7, and Figure 9 is an explanatory diagram of the teaching box shown in Figure 7.
The figure is a block diagram of the NC control device shown in Figure 7, and Figure 10.
The figure is a flowchart of conventional numerical control data creation for three-dimensional machining. In each figure, 19 is a CPU (central processing unit), 20 is a pass line, 21 is a storage device, 22 is a main memory, 23 is a coordinate value memory, 24 is a memory for NC data, 25 is a servo controller, and 2G is a servo motor It is. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] (1) In a three-dimensional machining numerical control data creation device that creates three-dimensional machining numerical control data of at least an X-Y-Z three-dimensional orthogonal coordinate system and a C-axis coordinate system around the Z-axis, the radial direction is A point P'(x', y'
), x=Rsinθ, y=R(1-cosθ), z=y', c=360×x'/2πR (however, angle θ is the rotation angle around the Z-axis), three-dimensional data P A numerical control data creation device for three-dimensional machining, comprising a three-dimensional data creation means for creating (x, y, z, c).