JP2001277058A - Compound plate working method including laser beam machining and pressing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new compound plate working method for plate product capable of separating micro joints and bending a plate at the same time in a compound plate working method including the laser beam machining and pressing. SOLUTION: This compound plate working method including the laser beam machining and pressing comprises following processes: a process for cutting a product center 7 and a figure 3 inside of the product with the laser beam except micro joints 9 for supporting a product 1 to be cut at opposite both sides; a process for forming a groove with the laser beam along a bending line 5 passing on the micro joints 9 of both the opposite sides; and a process for bending the plate along the bending line 5 and while separating the micro joints 9 from a plate material W at the same time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite sheet metal working method including laser working and press working.

[0002]

2. Description of the Related Art When cutting a large number of small products from a sheet metal material, a process of connecting a corner portion of the small product and the sheet metal material with a minute joint (micro joint) so that the small products are not separated during processing. The method is widely used because it allows efficient processing.

[0003] However, a small product subjected to microjoining requires a step of separating the small product after the processing is completed.

Means for separating microjoined products from sheet metal material or laser-cut pieces (products)
Conventionally, various methods have been developed as the cut piece separating means when the piece does not fall from the cut hole (material).

For example, for the former, there is a technique in which a sheet metal material side (remaining material skeleton side) near a microjoint is supported by an elastic body provided on a die, and the product is separated by pressing the portion with a punch. It is disclosed in JP-A-8-33931.

For the latter, there has been proposed a technique in which a laser-punched composite machine positions a cut piece cut by laser at a separation mold position where no die is mounted, and presses with a punch to separate it. No. 3,318,156.

[0007]

The above-mentioned micro-joint separating means or cut piece separating means aims at the separation in the separation step.

An object of the present invention is to provide a novel composite sheet metal working method for a sheet metal product in which bending is performed simultaneously with separation of a micro joint in composite sheet metal processing including laser processing and press processing.

[0009]

According to a first aspect of the present invention, there is provided a composite sheet metal working method including a laser working and a press working, which comprises the following steps.

[0010] (1) Laser processing cuts the product outer shape and the figure inside the product, leaving a microjoint that supports the cut product on both sides opposite sides. (2) Laser processing passes over the microjoints on both sides opposite sides. Groove processing is performed on the bending line. (3) Press processing is performed to perform bending processing along the bending line, and at the same time, the micro joint portion is separated from the sheet metal material.

According to a second aspect of the present invention, there is provided a composite sheet metal working method including a laser working and a press working, which comprises the following steps.

(1) Laser processing cuts the product outer shape and the figure inside the product while leaving a microjoint supporting the cut product on both sides opposite sides. (2) Straight line passing through the microjoints on both sides opposite sides by laser processing. Set a bending line on the outer side and perform groove processing on the bending line,
(3) The micro-joint portion is separated from the sheet metal material by performing bending along the bending line by pressing.

According to a third aspect of the present invention, there is provided a composite sheet metal working method including a laser working and a press working, which comprises the following steps.

(1) The outer shape of the product and the figure inside the product are cut by pressing, leaving the microjoint supporting the cut product on both sides opposite sides. (2) Passing over the microjoint on both sides opposite sides by laser processing. Groove processing is performed on the bending line. (3) Press processing is performed to perform bending processing along the bending line, and at the same time, the micro joint portion is separated from the sheet metal material.

According to a fourth aspect of the present invention, there is provided a composite sheet metal working method including laser working and press working, which comprises the following steps.

(1) The outer shape of the product and the figure inside the product are cut by pressing, leaving a microjoint supporting the cut product on both sides opposite sides. (2) A straight line passing through the microjoints on both sides opposite sides by laser processing. Set a bending line on the outer side and perform groove processing on the bending line,
(3) The micro-joint portion is separated from the sheet metal material by performing bending along the bending line by pressing.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 are views for explaining a process of manufacturing a product 1 from a sheet metal material W by using a laser punch combined machining apparatus. The shape of the product 1 is, for example, a V-shape having an outer shape of a rectangle (A × B), five cut holes (graphics) 3 inside, and a bending line 5 orthogonal to the longitudinal direction at almost the center in the longitudinal direction. It is assumed that there is a bending process.

As shown in FIG. 1, first, a cutting hole (figure) 3 inside the outline of the product 1 is cut by a laser, and then a rectangular product outer shape 7 is cut. When the product outer shape 7 is cut, as shown in detail in FIG.
Are cut, leaving a microjoint 9 connecting them with a minute bridge.

The microjoint 9 is provided on a line obtained by extending the bending line 5 to the sheet metal material W. Then, groove processing is performed by a laser along the bending line 5.

As the laser-punch combined machine, for example, the one disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 05-318156 can be used. This laser
The punch combined processing machine is obtained by adding a laser processing device to a known turret punch press. In the turret punch press, various forming processes can be performed by using a forming die in addition to punching.

The laser processing is performed by a laser processing head provided near the processing head of the turret punch press. The width of the cutting groove 11 between the product 1 and the sheet metal material W at the time of laser cutting can be 0.3 mm or less for a thin plate.

In a state where the above-mentioned cutting processing is completed,
The product 1 is supported on the sheet metal material W by the micro joint 9 provided on an extension of the bending line 5.

Next, as shown in FIG. 4, using a die 13 for V bending and a punch 15 for V bending, bending along the bending line 5 is performed. When the bending process is performed, the microjoint 9 provided on the bending line is lowered below the transport line PL of the sheet metal material W, so that the microjoint 9 is cut and separated from the sheet metal material W at the same time as the bending process.

FIGS. 5 and 6 illustrate the case where the composite sheet metal working method of the present invention is used for a product 17 having another shape.

The product 17 is an example in the case where the bending line 19 is outside the straight line passing through the micro joints on both sides of the product 17.

As in the case of the product 1, the outer shape of the product and the cut hole (figure) 23 inside the product are cut by laser processing, leaving the micro joint 21 for supporting the cut product 17 on both sides opposite to each other. Grooving on the surface of.

Next, a bending process along the bending line 19 is performed by pressing using a forming die 25 and a punch 27. When the bending process is performed, the micro joint 21 is lowered below the transport line PL of the sheet metal material W, so that the micro joint 21 is cut and separated from the sheet metal material W at the same time as the bending process.

[0029]

According to the first to fourth aspects of the present invention, in a composite sheet metal working including a laser processing and a press working, a product supported by a sheet metal material by a microjoint is simultaneously bent and processed. Since it is separated from the material, there is no need to provide a special step for separating the microjoint, and efficient processing can be performed.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a process when a product is manufactured by a combined processing of laser processing and press processing.

FIG. 2 is an explanatory view of a process when a product is manufactured by a combined processing of laser processing and press processing.

FIG. 3 is a detailed view of a micro-joint part in a detailed view of a part P in FIG. 1;

FIG. 4 is an explanatory view showing a state where a bending process is performed on a laser-processed product portion and a micro joint portion is separated at the same time.

FIG. 5 is an example in which the composite sheet metal processing method of the present invention is applied to a product having another shape.

FIG. 6 is a diagram illustrating a state in which a laser-processed product portion is bent and a micro joint portion is separated at the same time in a product having another shape.

[Explanation of symbols]

 1, 17 Product 3, 23 Cut hole (contour) inside contour 5, 19 Bending line 9, 21 Micro joint 13, 25 Die 15, 27 Punch PL Transfer line W Sheet metal material

Claims (4)

[Claims] 1. A composite sheet metal working method including a laser working and a press working, which comprises the following steps. (1) Laser processing cuts the outer shape of the product and the figure inside the product, leaving a microjoint that supports the cut product on both sides and opposite sides. (2) Bending lines passing on the microjoints on both sides opposite sides by laser processing. (3) The micro joint portion is separated from the sheet metal material at the same time as the bending process is performed along the bending line by pressing. 2. A composite sheet metal working method including a laser working and a press working, comprising the following steps. (1) Laser processing cuts the product outer shape and the figure inside the product, leaving a microjoint that supports the cut product on both sides opposite sides. (2) Laser processing outside the straight line passing through the microjoints on both sides opposite sides. A bending line is set, and a groove is formed in the bending line. (3) By pressing, bending is performed along the bending line, and at the same time, the micro joint portion is separated from a sheet metal material. 3. A composite sheet metal working method including laser working and press working, comprising the following steps. (1) Press processing is used to cut the product outer shape and the figure inside the product, leaving a microjoint that supports the cut product on both sides opposite sides. (2) Bending line passing over the microjoint on both sides opposite sides by laser processing (3) The micro joint portion is separated from the sheet metal material at the same time as the bending process is performed along the bending line by pressing. 4. A composite sheet metal working method including laser working and press working, which comprises the following steps. (1) Press processing to cut the product outer shape and figure inside the product while leaving a microjoint that supports the cut product on both sides opposite sides. (2) Laser processing outside the straight line passing through the microjoints on both sides opposite sides. A bending line is set, and a groove is formed in the bending line. (3) By pressing, bending is performed along the bending line, and at the same time, the micro joint portion is separated from a sheet metal material.