JPH06254674A - Automatic gas cutting method for steel plate by photoetching - Google Patents

Abstract

PURPOSE:To obtain a high precision product by magnifying and projecting an object obtained by photographing and developing a drawing on a steel plate according to actual dimensions as a mask, photoetching the magnified and projected object and afterward, driving an automatic gas cutting machine while pursuing this object by a photoelectric tube or a laser beam. CONSTITUTION:After a photograph is developed, this is magnified by lenses 2 and 3 as the mask 4 and projected on a mask projection screen 5. The steel plate upper surface is regulated, then, an oxide film is applied on the steel plate and a photosensitive agent is applied thereon. Exposure is then carried out thereon through the mask 4 which is developed and a part where the photosensitive agent is reacted is removed. A part of the oxide film is then removed by etching and then, a part of the steel plate is etched by an etching liquid. Consequently, the high precision product can be obtained by an optical photographic technology and a chemical reaction.

Description

Detailed Description of the Invention

[0001]

[Industrial application] It is a highly reliable and precise processing technology that combines photographic projection, exposure technology and chemical technology.

[0002]

2. Description of the Related Art Conventionally, in order to cut a steel plate into a size as shown in a drawing, a person looks at a design drawing, makes a pattern, and puts it on the steel plate to guide a cutting machine, or according to a CAD method, Since the numbers of the coordinate axes are given to the computer from the drawing to drive and cut, a manual operation is involved in the operation process, so it is difficult to cut a product with high accuracy.

[0003]

[Problems to be Solved by the Invention]

(B) The conventional machining method was used again, and the photographic corrosion method (photo etching), which is an application of high-tech technology, was adopted to improve product accuracy.

[0004]

As a method for surely copying a design drawing, the conventional manual method is revisited, and a photography method and an exposure corrosion technology are summarized to obtain a highly accurate product.

[0005]

The photographic technology is applied to ensure the accuracy as designed, and in order to magnify the photographic technology, the photographed product is developed and projected as a mask.
It is exposed and the steel sheet is chemically reacted to obtain the desired highly accurate product.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The basic process of the manufacturing method of the present invention will be described below with reference to the drawings. FIG. 1 shows a projector for photographic development, which is used as a mask for enlarged projection, and which is used as an exposure. (1) is a light source, (2) and (3) are lenses, (4)
Is a mask, (5) is a mask projection view, and FIG. 2 is a process sequence of the manufacturing process. (6) is a steel plate, (7) is an oxide film, (8) is a photosensitizer, (4) is a mask, (10) is exposure, (11) is a partially etched portion of the steel plate, and (a) is on the steel plate. Step (b) is a step of applying an oxide film on the steel plate, step (b) is a step of applying a photosensitizer on top of item (b), and step (d) is ( In step (e), light is projected through a mask over the exposure step. (E) In the development step, part of the photosensitizer reacts and is removed. In (f), part of the oxide film is removed by etching (etching) step. To be done. (G) is a step of removing the photosensitizer, and a part of the steel plate is etched with a corrosive liquid.

[0007] The present invention is obtained by going through the above-mentioned processes, and since it is a high-tech technology applying optical photographic technology and chemical reaction, the manufactured result can obtain a highly accurate product.

[0008]

[Effect of the Invention] This is a machining method with a high added value capable of producing a product having a remarkably high degree of precision with a small error as in the conventional method.

[Procedure amendment]

[Submission date] August 30, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a view showing a floodlight projector which is used as a mask for magnifying and projecting after photo development, and further for exposing the same.

FIG. 2 is a process diagram of a manufacturing process.

[Explanation of reference numerals] 1 light source 2 lens 3 lens 4 mask 5 mask projection view 6 steel plate 7 oxide film 8 photosensitizer 10 exposure 11 partial etching of steel plate

Claims (1)

[Claims] 1. A shape and size exactly as designed are first drawn, and a photographed and developed product of the same is magnified and projected according to the present size to expose it on a steel plate and photolithography it. This photo-corrosion trace is driven by an automatic gas cutting machine while tracing it with a photoelectric tube or a laser beam, which is a precision machining method and a method applying high-tech technology.