JPS614647A - Making method of tape for nc arc cutting and device thereof - Google Patents

Abstract

PURPOSE:To make NC arc cutting in a simple manner as well as to aim at improvements in productivity and yield rate, by copying an ordinary template automatically with an eye tracer and using it as an automatic digitizer, while converting the information into an NC format. CONSTITUTION:A pattern being inputted with pulse code by a memory 9 is reproduced on a graphics, while each divided point of a rectilinear part, a corner and a curve is discriminated and instructed, correcting a copying accuracy defective, and data are housed in a memory bank 11 after converting them into an NC format. Next, each housed pattern is called out, while these patterns are disposed on the graphics in due consideration of the yield rate of a blank, and methods of cutting and making-off of cutting order, designation of an infeed point, etc., are instructed. And, NC data 12 are outputted at a blank unit, and the data 12 is perforated with the ordinary NC format and a magnetic tape, a floppy-disk, etc., are interposed there, or are directly transmitted to a numerical control panel 13 which converts an operating signal and numerical data into pulses from the format and controls operation and positioning of a numerically- controlled arc cutter 14.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for producing an NC fusing tape and an automatic digitizer device used therein.

<Prior Art and its Problems> Conventionally, when cutting plate materials such as steel plates, NC cutting has been performed, or eye-tracing type cutting has been performed by identifying the line edges or edges of a template using reflected light or transmitted light. In the case of NC fusing cutting, processing information is applied to a punching orb based on the NC format, or input is made using magnetic tape, but in the case of the eye tracing method, it is necessary to create a template; The pre-process for fusing is completely different.

In fusing using the photo-eye copying method, the positional relationship between the material and the template is left to the worker, so the material yield rate is quite low, and the work is hindered by the placement of the template, resulting in a significant drop in efficiency. There is. On the other hand, in the case of NCi cutting, computer graphics can be used to combine materials in order to improve the yield of materials, so it has been rapidly becoming popular recently.

However, it is extremely difficult to convert to the Kanji system based on numerical data, as it requires familiarity and major changes in the system, compared to the currently overwhelmingly common practice of creating templates.

<Summary of the Invention> In view of the above points, the present invention is characterized by automatically tracing a template with an eye tracer, using it as an automatic digitizer, and converting the information into NC format.

<Embodiment of the Invention> An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an automatic digitizer device, and 1 indicates a template 2.
3 is the stand on which the servo motor 3 for traveling the aircraft is placed.
This is a traveling trolley equipped with an encoder 3b that converts the rotation of the motor into pulses or position codes. Reference numeral 4 denotes a traveling rail on which the traveling truck 3 runs, and a cross rail 5 that is perpendicular to the rail 4 and connected to the traveling truck 3 is bridged thereon. A tracer head 6 moves along the cross rail 5, and is driven by a servo motor 6a, and the rotation of the motor is detected by an encoder 6b.

As is well known, control by PhotoEye decomposes the direction of tracing into velocity vectors in the orthogonal coordinate system of the running rail 4 and cross rail 5, converts this into a voltage, and controls the servo motor 3 of each axis.
The tracer head 6 is controlled so as not to deviate from the tracing line of the template 2 by driving the tracer head 6a and 6a.

In the conventional eye tracer type fusing machine, the fusing torch is fixed via the tracer head 6 and a mounting bar, and the movement of the tracer head 6 is transmitted.

As illustrated, the present invention includes a traveling truck 3 and a tracer head 6.
The rotation of the drive motor is detected by encoders 3a, 6a, or the relative movement between the linear traveling truck 3 and the traveling rail 4, and the tracer head 6 and the cross rail 5 is detected by encoders 3b, 6b. be.

A pulse generator is generally used as an example of an encoder. For example, if positive and negative pulses are oscillated for each control axis in response to one pulse of 0.1 mm, the encoder will generate signals in the 4 directions of the slide rail (x-axis) and the 5 directions of the cross rail ( y-axis), ±1
If four types of pulsed signals are oscillated, it can be displayed in 3 bits as shown below, for example.

001 x -+4 pulses 010 x -1 pulses 101 y +1 pulses 110 y -1 pulses If this is stored continuously and reproduced, fusing can be performed by digital control, but the amount of memory becomes enormous, In addition, tracing by the photo eye is not accurate, and the straight line becomes like a collection of curved lines because movement is constantly applied to the tracing line due to corrections by the feed bank. Therefore, unless the data obtained by copying is corrected and the processed data is compressed by replacing it with NC formatting, it is impossible to use the NC fusing method in combination with the template-based fusing method.

FIG. 2 shows an embodiment for explaining the connection between template copying and NC control, in which 7 shows the above-mentioned digitizer device, 8 a pulse code circuit, 9 a pulse code memory medium, and a cassette. tape, floppy desk,
A desk etc. is used. 10 is a processor equipped with graphics, and the operating procedure is as follows.

(2) Reproduce the figure on graphics using the memory 9 that is manually input using the pulse code.

06 Determine and indicate the straight line parts, corner positions, and curve division points of the figure, and correct poor copying.

(2) Convert to NC format and store the data in the memory bank 11.

Next, the process for creating the NC medium is as follows.

■Recall figures stored in the data bank.

■ Arranging (nesting) figures on graphics considering the yield of materials.

■Specify the cutting and scribing methods, such as the cutting order and cut points.

(2) Output NC data 12 for each material.

This NC data 12 is transmitted to the NC control panel 13 in a conventional NC format, either through a perforated tape, magnetic tape, floppy disk, etc., or directly to the NC control panel 13. Next, N.C.
The control panel 13 converts work signals and numerical data from the NC format into pulses, and controls the work and positioning of the NC fusing machine 14 and the driving of the contour.

<Effects of the Invention> According to the method of the present invention, the conventional fusing system using a template and eye tracer copying can be easily changed to N without using a complicated graphic input method, which is a completely different system.
It creates a C format and enables NC processing. Furthermore, conventionally, the industries where NC fusing can be performed are limited to major shipyards with the capability, and the ratio of the number of operating fusing machines is approximately 20:1 between the eye tracer method and the NC method.
There is a disparity, and the biggest reason for this is the lack of ability to create NC Fuomasoto, and it would require a great deal of cost and effort to develop that system independently. In this respect, according to the method using the automatic digitizer according to the present invention, it is not necessary to make many changes to the conventional system,
NC fusing can be easily adopted, thereby making it possible to improve productivity and significantly improving the yield rate of materials.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of an automatic digitizer device according to the present invention, and FIG. 2 is an explanatory diagram showing the connection between increasing templates and NC control. 1 is a template stand, 2 is a template, 3 is a running trolley, 3a is a servo motor, 3b is an encoder, 4 is a running rail, 5 is a cross rail, 6 is a tracer head, 6a is a servo motor, 6b is an encoder, 7 is a digitizer device, 8 is an encoding circuit, 9 is Mekily, 10 is Prosensor,
11 is memory bank, 12 is NCC deck 13 is NC
The control panel 14 is an NC melting UI machine.

Claims (2)

[Claims] (1) In the conventional pattern copying method using a template, the trajectory of the tracer head is set to x, Convert it to a pulse in the y-axis direction, encode it, temporarily store it, reproduce it on a computer graphic, artificially modify the figure, convert it to NC format, store it in a data bank, and edit the figure as necessary. Recall, arrange, and operate the NC fusing machine. Output the NC data to perforated tape, magnetic tape, desk, etc., and perform NC.
How to make NC fusing tape to operate the fusing machine. (2) Running rail (x-axis) and cross rail (y-axis) orthogonal to this in a pattern copying device that uses a template
An automatic digitizer device for producing tape for NC fusing, characterized in that, in a mechanism for guiding a copying device, movement of a tracer head in the x-axis and y-axis directions is detected and coded by an encoder in the form of pulses.