JP2002079936A - Method of manufacturing outside plate reinforcing panel for rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily form beads on various sizes and shapes of reinforcing panels. SOLUTION: The plurality of beads are press molded one by one on the reinforcing panels to be mounted on the car inner side faces of outside plates.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an outer panel reinforcing panel for a railway vehicle.

[0002]

2. Description of the Related Art In a side structure of a railway vehicle, there is a structure in which a skeleton such as a pillar, a lateral bone and the like and an outer plate support the self-weight of the vehicle body and a passenger load. There is a reinforcement bone on the inside surface of the outer panel,
Since a plurality of reinforcing bones are attached to the lumbar region, the number of parts increases. For example, as shown in Japanese Patent Application Laid-Open No. 61-220963, a reinforcing panel formed by press-forming a plurality of beads on the inner side surface of an outer plate is attached. A technique for reducing the number of parts while maintaining the same effect is disclosed. Further, as shown in Utility Model Registration No. 2592092, a reinforcing panel formed by press-forming a bead corresponding to a pillar or a transverse bone is attached to a vehicle inner side surface of an outer plate instead of a frame such as a pillar or a transverse bone. Some construct side structures.

[0003]

However, these reinforcing panels are formed by integrally pressing a plurality of beads. However, in the case of the integrated pressing, the size of the reinforcing panel differs depending on the mounting portion of the outer plate. In addition, a press die is required for each reinforcing panel. Also, a large press die is required,
In order to be able to produce products with the desired finish without cracks, wrinkles, etc., it is necessary to repeatedly reproduce and correct the press mold,
Although mass production will be cheaper if it gets on track, initial costs such as mold costs and prototype costs until mass production are high,
Since it takes time to prototype, the delivery time is lengthened. On the other hand, many railcars are made to order based on the circumstances of each railway company.Therefore, considering the customer service facilities desired by each railway company, consider the layout inside the train, and arrange the windows of the structure and the arrangement of the side pillars accordingly. Is a general design process. Under such circumstances, it is rare that the production amount which can amortize the mold cost and the trial production cost by the integrated press is collected. Furthermore, the length of the vehicle body is limited by the vehicle limit, and considering the layout so that the doors are arranged at equal intervals in that range, it is necessary to change the width of the reinforcing panel naturally at the waist under the window and at the waist of the door pocket. is there. In addition, since the size and shape of the reinforcing panel are different between the waist portion and the blow-by portion, reinforcing panels of various sizes and shapes are required for each vehicle type. Therefore, in many cases, the production amount cannot be reduced and the cost cannot be reduced with the reinforcing panel formed by the integrated press.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for manufacturing an outer panel reinforcing panel for a railway vehicle, which can form beads on reinforcing panels of various sizes and shapes at low cost in a short time.

[0005]

SUMMARY OF THE INVENTION To achieve the above object, the present invention relates to a method for manufacturing a railcar outer panel reinforcing panel, in which a plurality of beads are press-formed on a reinforcing panel attached to an inner side surface of an outer panel. The bead is press-formed one by one on the reinforcing panel.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. The side structure 1 is a door pocket pillar 2,
A skeleton is composed of the side pillars composed of the window pillars 3, the lateral bones composed of the curtain band 4, the waistband 5, and the long base 6, and the lumbar pillars 7 below the window opening, and the outer plate 8 is welded to the framework. A reinforcing panel is attached to the inner side surface of the outer panel 8. The reinforcing panel is attached to a blower reinforcing panel 9 attached to the outer panel 8 of the blower, a waist reinforcing panel 10 attached to the waist outer panel 8 below the blower, and attached to the outer panel 8 below the window opening. There is a reinforcement panel 11 under the window.

The blow-portion reinforcing panel 9 has a plurality of long and short beads 12 and 13 formed in an oblique direction.
The waist reinforcement panel 10 has a long bead 12 formed in the vehicle front-rear direction, and the under-window reinforcement panel 11 has a short bead 13 formed in the vehicle front-rear direction.

The beads 12 and 13 are formed one by one by press molding. The short bead 13 is formed by one press die 14 shown in FIG. Long bead 1
2 is a press die 14 and a terminal press die 15 shown in FIG.
And molded. In this molding method, first, a part of the terminal press die 15 is pressed on the end of the bead pressed by the press die 14, while pressing the press die 14, exchanging the material for the terminal press die 15, and feeding the material. This is repeated to form a bead 12 having a desired length. In addition, the forming direction of the beads 12 and 13 in each reinforcing panel is not limited to the above-described direction, and may be a direction corresponding to the flow of stress in the mounting portion of each reinforcing panel.

As described above, forming the beads 12 and 13 one by one is less productive than the integrated press forming, but uses the same press dies 14 and 15 even if the size or shape of the reinforcing panel changes. Since the bead having a desired length can be formed, and the number and arrangement of the beads can be freely set, the bead can be manufactured without worrying about the mold cost even in small-scale production. In addition, it is difficult to predict the flow of material in the press die, and wrinkles and cracks are generated. Therefore, it is necessary to correct the press die by trial and error until a satisfactory product is obtained. There is no need for such a small area. Further, a press die can be used semi-permanently. Therefore, it is very effective in reducing cost and delivery time.

In the above embodiment, a male and female press die was used, but the same applies to a hydraulic press using a female press die.

[0011]

As described above, according to the method for manufacturing a railcar outer panel reinforcing panel of the present invention, a plurality of beads are press-formed one by one on a reinforcing panel attached to the inner side surface of the outer panel. Even if the size or shape of the panel changes, beads of the desired length can be formed using the same press mold,
Since the number and arrangement of the beads can be freely set, even a small-scale production can be performed without worrying about the mold cost.
Also, since the pressing range is small, there is no need to modify the press die, and the press die can be used semi-permanently, which is very effective in terms of cost reduction and delivery time reduction.

[Brief description of the drawings]

FIG. 1 is a front view of a reinforcement panel under a window.

FIG. 2 is a sectional view taken along line II-II of FIG.

Fig. 3 Bottom view of short press die

FIG. 4 is a bottom view of a terminal press die.

FIG. 5 is an enlarged view of the inner side surface of the side structure.

FIG. 6 is an overall view of an inner side surface of the side structure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... side structure, 2 ... door pocket pillar, 3 ... window pillar, 4 ... curtain band, 5 ... waistband, 6 ... long base, 7 ... waist pillar, 8 ... outer panel, 9 ... blow-in part reinforcement panel, 10 ... waist reinforcement Panel, 11: Under reinforcement panel under window, 12, 13: Bead, 14, 15: Press type

Claims (1)

[Claims] 1. A method for manufacturing a railcar exterior panel reinforcement panel for press-molding a plurality of beads on a reinforcement panel attached to a vehicle interior side surface of an exterior panel, wherein the bead is press-molded one by one on the reinforcement panel. A method for producing a railcar exterior panel reinforcing panel.