JPH081424A - Machining device of h sections to be used at column-beam joint part - Google Patents

Abstract

PURPOSE:To totally and efficiently execute the machining of edge preparation and notched grooves of H sections at a column-beam joint part having no scallop part. CONSTITUTION:Spindles 6-8 are provided on a cutter head 5 which is traveled on a vertical guide 4, and a first cutter 9 of cylindrical shape, a second cutter 10 of disk shape, and a third cutter 11 of truncated conical shape are fitted thereto. The first and third cutters 9, 11 execute the cutting of a groove part Ca corresponding to a flange a(b), while the second cutter 10 executes the cutting of a notched groove Ga(Gb) corresponding to a web (c). The notched groove Ga(Gb) is of a shape equivalent to a backing Ha(Hb).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machining apparatus for H-section steel used for beam-column joints, and more particularly to a cutting apparatus for machining a groove and a groove.

[0002]

2. Description of the Related Art FIG. 7 shows a conventional beam-column joint structure in a building steel frame. In the figure, A is a square column that constitutes a pillar material, B is an H-shaped steel that constitutes a beam material, a and b are flanges c are webs connecting both flanges a and b Ca and Cb are flanges a and b Groove Da formed at the end,
Db is a scallop portion Fa, Fb provided by cutting out the end portion of the web c, and backing metal pieces arranged inside the flanges a, b.

In the above-mentioned conventional construction, the ends of the flanges a, b, the diaphragms m, n of the joint E, and the end face of the web c and the abutting portion of the vertical flat surface Ea are welded all around to form the required structure. To complete the beam-column joint. When the above-mentioned construction method is carried out, the groove portions Ca and Cb and the scallop portions Da and Db must be cut in the H-section steel B. For this reason, conventionally, Japanese Patent Publication No. 1-34728 and Japanese Utility Model Publication No. 4-3
A groove scalloping device proposed by No. 2168 and the like was prepared.

[0004]

In the conventional method, however, since the scalloped portions Da and Db are formed by notching the end portion of the web c largely, the cross-section defect of the web c is large, and the joining strength of the joint c is increased. It was pointed out that there was a problem that the deterioration and concentration of stress and strain were caused. In order to deal with this problem, the present inventor has proposed a welding structure for a beam-column joint shown in FIG. 5, but this requires a dedicated processing device.

The gist of the construction method (non-scallop construction method) without cross-section defect proposed by the present inventor is as follows. That is, cutout grooves Ga and Gb (see FIG. 3) corresponding to the cross section of the backing metal plates Ha and Hb are formed in the web c, and a series of backing metal plates covering the entire widths of the flanges a and b are formed in the notch grooves Ga and Gb. After charging Ha and Hb, after this, web c and backing metal H
It is characterized in that the notch grooves Ga and Gb are closed by welding a and Hb all around.

Therefore, in processing the H-section steel,
The groove portions Ca and Cb and the cutout grooves Ga and Gb are required to be cut. Then, it is desirable that these processes are simultaneously performed from the viewpoint of improving efficiency.

[0007]

In order to meet the above demands, the processing apparatus for H-section steel according to the present invention is constructed as follows. That is, the gist thereof is that the cutting head is provided with a cylindrical first cutter, a disk-shaped second cutter and a conical third cutter, and the first and third cutters open the flange. The tip portion is formed by cutting a notch groove on the web with a second cutter, and the notch groove is formed into a shape corresponding to the cross section of the backing metal.

[0008]

[Function] Each of the first to third cutters is provided in the cutting head,
These cutters are arranged on the flange and the web of the H-section steel while maintaining the positional relationship shown in FIG. Then, these cutters are moved in the direction of the arrow in FIG. As a result, the first and third cutters cut the groove portion and the second
Cutter cuts the notch in the web. This processing is
It can be performed by a transient traveling movement of the cutting head.

[0009]

EXAMPLES Examples of the H-section steel processing apparatus according to the present invention will be described below. 1 and 2, 1 is a table on which the H-section steel B is placed.
It is clamped in place by the vise means 2. Three
Is a base column 4 is a vertical guide 5 provided on the base column 3 is a cutting head for moving the vertical guide 4 up and down. The cutting head 5 is moved up and down by a driving means (not shown).

Reference numerals 6 to 8 denote three horizontal spindles 9 arranged on the cutting head 5, a cylindrical first cutter 10 mounted on the upper spindle 6 and a disk-shaped first cutter 10 mounted on the intermediate spindle 7. The second cutter 11 is a frustoconical third cutter 12 attached to the lower spindle 8 and the drive motor 13 is for rotating each spindle 6-8.
Is a protrusion position adjusting means provided on the lower spindle 8.

In the above, the first cutter 9 cuts the root face f on the end face corresponding to the flange a (b) of the H-section steel B. (See FIG. 3) The second cutter 10 cuts a notch groove Ga (Gb) corresponding to the backing metal Ha (Hb) on the end face corresponding to the web c. In addition, the third cutter 11
Cuts an inclined groove surface e on the end surface corresponding to the flange a (b). A groove Ca (Cb) is formed by the root surface f and the groove surface e.

The configuration of the processing apparatus according to the embodiment is as described above, and the groove portions Ca and Cb and the cutout portion G are formed as follows.
Processing of a and Gb is performed. As shown in FIG. 5, the diaphragm m,
When welding the H-section steel B to the n and the vertical flat surface portion Ea, the end portion of the web c is set in a cutting position of the first cutter 9 by a predetermined amount as shown in FIG. Then, the H-section steel B is clamped and fixed at this set position, and the cutting head 5
Is moved up from the position shown in FIG. By this movement of the cutting head 5, the groove portions Ca and Cb of FIG.
The notched grooves Ga and Gb can be processed.

[0013]

As described above, in the H-section processing apparatus according to the present invention, in the non-scalloped column-beam joining structure in which the cross-section of the web is not lost, the groove and the notch groove processing of the flange and the end surface of the web in the H-section steel are performed. It exhibits an excellent effect that it can be carried out temporarily and efficiently.

[Brief description of drawings]

FIG. 1 is a front view showing a main configuration of a processing apparatus according to the present invention.

FIG. 2 is likewise a plan view.

FIG. 3 is an explanatory view showing a processed shape of a groove portion and a notch groove.

FIG. 4 is a perspective view of an H-shaped steel in which a groove and a groove are processed.

FIG. 5 is an explanatory diagram showing a configuration of a beam-column joint portion.

FIG. 6 is an explanatory diagram showing a configuration of a conventional beam-column joint.

[Explanation of symbols]

 4 Vertical guides 5 Cutting heads 6, 7, 8 Spindles 9 1st cutter of cylindrical shape 10 2nd cutter of disk shape 11 3rd cutter of truncated cone A Square pipe B H-shaped steel a, b Flange c Web Ca, Cb Groove Ga, Gb Notched groove Ha, Hb Backing metal

Claims (1)

[Claims] 1. A H-shaped steel is clamped and fixed at a predetermined position, and a cutting head that travels corresponding to the H-shaped steel is provided, and a cutting tool provided in the cutting head is used to cut the flange and the end of the web. In the machine, the cutting head has a cylindrical first cutter and a disk-shaped second cutter.
And a conical third cutter, wherein the first and third cutters form a groove on the flange and the second cutter forms a cutout groove on the web, respectively, and the cutout groove is formed. A processing device for H-section steel used for column-beam joints, which has a cross-sectional shape corresponding to the backing metal.