JPH0246919A - Working method for l-shaped bent product - Google Patents

Abstract

PURPOSE:To work an L-shaped bent product by a low manhour and with high accuracy by performing prescribed bending to a developed stock of the L-shaped bent product, and thereafter, bending its middle part. CONSTITUTION:A suitable hole 5 is pierced by a punch press, blanking is executed by a shearing machine, and also, a V-shaped groove 11 is worked to the inside of a part which becomes a bending part in the lateral direction of a reference surface 9 of a bending member 7 by a V-shaped groove working machine, and a developed stock 3 of an L-shaped bent-up product is worked. Subsequently, the developed stock 3 is bent by a bending machine, and the bending member 7 corresponding to a composite part of the bending member is worked. Next, the bending member 7 is bent with a hand with the V-shaped groove 11 inside, and by executing suitable welding 13, an L-shaped bent-up product 1 is obtained. Since the reference surface 9 is bent with the V-shaped groove 11 inside, the finish is satisfactory, and a bending curve of the outside can also be made small enough.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention provides an L-shaped structure in which bent members are bent in a predetermined manner in the longitudinal direction so that the cross section has a predetermined shape. The present invention relates to a method for processing an L-shaped bent product in which the product is joined to the L-shaped folded product.

(Prior art) Conventionally, the L-shaped bent product as described above is produced by individually bending two plate-like members, combining the bent members into an L-shape, and welding the end faces. It was manufactured by fixing it with a fixing means.

(Problem to be Solved by the Invention) However, in the conventional method of processing L-shaped folded products as described above, the bending members as elements of the L-shaped folded products are individually bent. However, there was a problem in that a large number of bending steps were required.

Furthermore, since the end faces of the individually bent members are butted against each other and fixed, a large number of man-hours are required for the fixing work, and there is a problem in that the assembly accuracy varies.

Therefore, an object of the present invention is to provide a processing method that can process the above-described shaped folded products with a small number of man-hours and with high precision.

[Structure of the Invention] (Means for Solving the Problems) A method for processing an L-shaped folded product of the present invention that solves the above problems includes performing a predetermined bending process in the longitudinal direction so that the cross section has a predetermined shape. A method for processing an L-shaped folded product in which folded members are joined together in an L-shape, in which a unfolded material is created by unfolding the above-described bent product, and the material has a predetermined cross section. A predetermined bending process is performed in the longitudinal direction so that the reference plane of the developed material is bent in the transverse direction to give the above-mentioned C shape.
A feature is that the bending portion in the horizontal direction of the surface is provided with grooves sufficient to allow the folding in the L-shape to be performed manually.

(Function) In the method for processing a knee-shaped folded product of the present invention having the above configuration, after performing a predetermined bending process on the unfolded material of the L-shaped folded product, the reference plane of the intermediate portion is folded in the transverse direction. Since the L-shape is formed by bending, all the bending members constituting the L-shaped folded product can be bent at once, and the number of man-hours can be reduced accordingly.

In addition, since a groove is machined in the bending part of the reference surface of the developed material to assist in bending, the middle part can be easily cut by hand.
Can be bent with high precision.

(Example) Hereinafter, the present invention will be explained in detail using an example of the L-shaped folded product 1 shown in FIG.

First, as shown in FIG. 1, the unfolded material 3 of the L-shaped folded product 1 is processed.

The unfolded material 3 is an unfolded L-shaped bent product 3, which is made by punching appropriate holes 5 using a punch press (not shown), then cutting into sheets using a shirring machine (not shown), and further using a V-shaped groove processing machine (not shown). Reference plane 9 of the bending member 7 shown in Fig. 3
It is created by machining a V-shaped groove 11 as shown in FIG. V-shaped groove 1
1 is such that the reference surface 9 can be easily bent manually with this groove 11 inside.

Next, as shown in FIG. 3, the spread material 3 is bent by a bending machine (not shown) to form bending members 7 corresponding to the composite amount of bending members shown in the conventional example.

Then, as shown in FIG. 4, the V-shaped groove 11
The folding member 7 shown in FIG. 3 is bent by hand with the inner side thereof, and appropriate welding 13 is performed to form an L-shaped folded product 1q.

As shown in FIG. 5, since the reference surface 9 is bent with the V-shaped groove 11 on the inside, the finish is good and the bending radius on the outside can be made sufficiently small.

As described above, in this example, one bending member 7 is bent at a time instead of bending each bending member individually as shown in the conventional example, so the number of bending steps is significantly reduced. be able to.

In addition, in this example, as shown in FIG.
Since the groove 11 is machined, an L-shape can be easily obtained with high precision, and the number of man-hours can be reduced and the product precision can be improved.

In the above embodiments, the groove is shown as an example of a V-shaped groove 11, but it goes without saying that the groove may be a groove other than a V-shape, for example, a U-shape.

Further, in the above embodiment, the L-shaped folded product is shown as an example of the small sushi-shaped folded product 1 in FIG. 4, but it goes without saying that it may be part or all of a frame such as a window frame.

The present invention is not limited to the above embodiments, but can be implemented in any appropriate manner by making appropriate design changes.

[Effects of the Invention] As described above, in the present invention, the unfolded material of an L-shaped folded product is subjected to a predetermined bending process and then the intermediate portion is bent, so that the folding part (■) can be done all at once, and the folding Since grooves are machined on the bending reference surface of the bending member, it is possible to easily bend the curved shape by hand, and it is possible to process L-shaped bent products with low man-hours and high precision.

[Brief explanation of the drawing]

The drawings all show examples, and FIG. 1 is a plan view showing an example of the developed material, FIG. 2 is an explanatory diagram of a V-shaped groove, and FIG. 3 is formed by bending the developed material. FIG. 4 is a perspective view of the bending member, FIG. 4 is a perspective view of an L-shaped folded product, and FIG. 5 is an explanatory diagram of manual bending with the V-shaped groove inside. 1... L-shaped bent product 3... Expanded material 7... Bending member 11... V-shaped groove Agent Patent attorney Tamotsu Miyoshi Male 1... Ribbon-shaped bent product 3...・I! Open material 7...Bended N material 11...■-shaped groove construction 5 Figure 1 ¥! Figure 12 Figure 3

Claims (1)

[Claims] L in an embodiment in which bent members that have been subjected to a predetermined bending process in the longitudinal direction so that the cross section has a predetermined shape are joined together in an L shape.
A method for processing a shaped folded product, wherein a unfolded material is created by unfolding the L-shaped folded product, and a predetermined bending process is performed on the material in the longitudinal direction so that the cross section becomes a predetermined shape. , and then the L-shape is given by bending the reference plane of the middle part in the lateral direction, and the L-shape is manually bent at the lateral bending part of the reference plane of the developed material. A method for processing an L-shaped bent product, characterized in that sufficient groove processing is performed on the L-shaped bent product.