JPH0699809A - Body structure framework assembly device for railroad vehicle - Google Patents

Abstract

PURPOSE:To make assembly work of component members available for various vehicles of different sizes and shapes in manufacturing a body structure for railroad vehicle, and to provide a body structure framework assembly device of high accuracy and high quality for automating spot welding work. CONSTITUTION:A body structure frame assembly device for railroad vehicle comprises a positioning pin 16 for positioning frame members, a cassette 30 consisting of an electrode 14 for positioning the frame member, which also works as an electrode for indirect spot welding, a body structure framework block assembly jig for positioning the body structure frame member, on which the positioning pin 16 and the cassette 30 can move bilaterally on a jig surface plate 17, and an NC indirect spot welding device.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for assembling a structure of a railway vehicle used for manufacturing a structure for a railway vehicle.

2. Description of the Related Art In general, the structure of a railway vehicle is a structure in which a girder structure and side structures are erected at both ends of an underframe, and a roof structure is placed on the girder structure and the side structure. It has a structure in which an outer plate such as a steel plate is stretched. In the conventional assembling method, as described in Japanese Patent Publication No. 63-12027, the constituent members of the structure frame are set on an assembling jig manufactured for each vehicle type, and spot welding is performed to complete the assembling. .

The above-mentioned conventional assembling methods have the following problems. ． An assembly jig dedicated to the vehicle type is required. ． Workability is poor when positioning and assembling the structural frame members on the jig. ． It is difficult to assemble the structure frame block with high precision. INDUSTRIAL APPLICABILITY The present invention provides a skeleton assembly apparatus for a railroad vehicle structure that enables a large number of vehicle types to be supported by facilitating the change of an assembly jig, and high-accuracy, high-quality and efficient railcar assembly by performing automatic welding. The purpose is to

In order to achieve the above object, the combination of the conventional methods and the direct spot method by the portable spot welding machine are amended so that the side pillars, the vertical bones, and the horizontal bones can be installed in the structure frame block assembly jig. Material, reinforcement and gusset plate are positioned and constrained, and NC welding is performed by spot welding using the indirect spot method, which can reduce the number of assembly steps and assemble a highly accurate frame block with less distortion. It is a thing. As for the jigs, it is possible to support a large number of vehicle types by facilitating the movement of the slide base, the movement of the cassette, and the reassembling, reducing the jig manufacturing cost and storage space, and simplifying the management. is there.

The cassette is movably supported and fixed on the slide base. Therefore, the cassette can be moved to an arbitrary position in the jig width direction, and by mounting positioning pins and electrodes on the cassette, or by changing and replacing the cassette, it is possible to cope with various vehicle models having different assembly dimensions. The slide base is movably supported and fixed on the jig surface plate. Therefore, the slide base can be freely moved and positioned in the longitudinal direction of the jig, and like the above-described cassette, it is possible to support various vehicle types. The NC indirect spot welding equipment is capable of spot welding by automatically moving the area range of the jig by numerical control. Therefore, the NC indirect spot welding device can be applied to multiple vehicle models having different assembly dimensions within the operating range.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1, 2, 3 and 4. The structure frame assembly apparatus according to the present invention is an assembly jig (FIG. 2) that can be applied to various vehicle types.
And an NC indirect spot welding device (FIG. 4) for performing spot welding to connect the structural frames. 1 shows a cassette 30 which is a part of the assembly jig shown in FIG.
The cassette 30 is classified into several types depending on the presence or absence of the contour of the structure, the shape and size of the frame member, the gusset plate, the reinforcing material and the like. In FIG. 1, a part of the side structure frame block (A part in FIG. 3) is shown, and the entrance pillar 8 and the side pillar 9, the lateral bone 1
0, Position and restrain the gusset plate 11. The cassette 30 positions the base / electrode 13 positioned on the slide base 12, the electrodes 14 and 15 also functioning as the positioning of the entrance pillar 8 and the side pillar 9, the lateral bone 10, and the gusset plate 11 thereon. It is composed of positioning pins 16 and the like. FIG. 2 shows the structure of the assembly jig, which comprises a jig surface plate 17, a slide base 12 and the above-mentioned cassette 30. The jig surface plate 17 has a T-shaped groove for holding the slide base 12 in the central longitudinal direction, a setting measure 18 embedded for facilitating positioning, and guide rails provided at both ends. There is. Slide base on jig surface plate 17
A setting measure 19 for moving and positioning the cassette 30 in the longitudinal direction of the slide base 12 and a restraint tool 20 are incorporated in the cassette 12. FIG. 3 shows FIG.
Further, the entrance pillar 8, the side pillar 9, the lateral bone 10, the gusset plates 11, 21, 22 and the long base 23 are positioned and assembled in the assembly jig shown in FIG. 2 using various cassettes 30. In the following, selection of cassettes 30 suitable for each part, movement, rearrangement, movement of the slide base 12 and positioning restraint are carried out in this manner, and frame blocks are combined. Next, using the NC indirect spot welding device shown in FIG.
Indirect spot welding is applied to the frame blocks assembled as described above to complete the assembly. The welding apparatus shown in FIG. 4 is provided with slides 51 and 52 that can move in the jig width direction and up and down directions and a head 53 that can deal with contours in the jig width direction on a gate-type traveling body 50. Slide base on jig surface plate 17 while moving according to command from controller 55
12. An automatic welding device for performing indirect spot welding of various frame members positioned and set via the cassette 30 with the electrode 54. According to this embodiment, there are the following advantages. (1) A dedicated jig for assembling the frame block, which is required in the conventional assembling method, is unnecessary. (2) Assembly jig and N that have flexibility for changing vehicle types
The combination of the C indirect spot method enables high-precision assembly, obtains stable quality, and automates welding. Therefore, according to the present invention, the number of assembling steps is small, the manufacturability is excellent, the manufacturing price can be kept low, and the handling technique at the time of spot welding is not required, so that the distortion due to the oblique driving is suppressed, It is possible to obtain the effect that the adhesion failure with the outer plate hardly occurs when the outer plate is attached in the process. In the structure frame block assembling apparatus described above, since it is possible to cope with various vehicle types by moving the slide base, moving the cassette, changing the assembly, and adding, the jig manufacturing cost,
It also has the effect of saving storage space and facilitating management.

According to the present invention, it is possible to flexibly deal with the presence or absence of contours, various assembly dimensions of frame members, reinforcing materials, gusset plates, etc. This has the effect of reducing the jig storage space and management costs. In terms of quality, by combining with an NC indirect spot type welding device, accurate spotting is possible, and further, there is no distortion due to oblique striking,
Highly accurate and high quality assembly is possible, and there is also an effect that the number of assembling steps can be reduced by automation of welding.

[Brief description of drawings]

FIG. 1 is a perspective view of a cassette which is a part of an assembly jig according to the present invention.

FIG. 2 is a perspective view showing a configuration of an assembly jig.

FIG. 3 is a perspective view showing a state in which various frame members are assembled in an assembling jig.

FIG. 4 is a perspective view of the device of the present invention combined with an NC indirect spot welding device for performing spot welding.

[Explanation of symbols]

8 ... Entrance column, 9 ... Side column, 10 ... Horizontal frame, 11 ... Gusset plate, 12 ... Slide base, 13 ... Base / electrode, 14, 15 ...
Electrodes, 16 ... Locating pins, 17 ... Jig surface plate, 18, 19 ... Setting measure, 20 ... Restraints, 21, 22 ... Gusset plate, 23 ... Long base, 30 ... Cassette, 50 ... Gate-shaped traveling body, 5
1, 52 ... Slide, 53 ... Head, 54 ... Electrode, 55 ... Controller.

Claims (1)

[Claims] 1. A structural frame block in which horizontal aggregates and reinforcing members arranged in a horizontal direction on an inner surface of an outer plate of a railway vehicle and side columns and vertical aggregates arranged in a vertical direction are joined by various gusset plates. A cassette consisting of a base / electrode that is positioned on a slide base when assembling, a electrode that also functions to position horizontal aggregates and side columns, and vertical aggregates, and a positioning pin that can position the gusset plate and the reinforcing material so that the position can be changed. An assembly jig and an NC indirect spot, which consist of a slide base that slides the cassette and restrains the positioning, and a jig surface plate that moves the slide base to restrain the positioning. A structure assembly device for a railroad vehicle, which is characterized by combining a welding system of a system.