JPH0647611Y2 - Jig for H type steel end drilling - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial field of application) The present invention relates to a jig for drilling a connecting hole in a flange surface of an H-shaped steel end for a connection or a beam. .

(Prior Art) Up to now, in order to provide a connecting hole in the flange surface of the H-shaped steel end, first, scoring is performed with a scale or the like, then center punching is performed, and finally, a hole is drilled with a drill, an attler, or the like.

However, this method requires multiple workers (usually, scoring, punching, and punching are performed by different workers), and its accuracy is considerable. Requires skill.

(Problems to be solved by the invention) The present invention has been made in view of the above-mentioned actual circumstances, and provides a sig that can achieve the purpose only by punching work, omitting scoring during the above work and punching. To do.

[Constitution of the Invention] (Embodiment) Explaining an embodiment with reference to the drawings, in FIG. 1 showing a back side, that is, an upside-down state, 1 is a jig plate main body, and a jig hole 2 having a predetermined hole diameter is provided at a preset portion. I am doing it.

The jig plate main body 1 has one end (the upper right end in the figure) at which a backing plate 3 is integrally fixed in a downward direction at a right angle, and a wave surface having an adjusting screw 5 in the vertical direction near the center of the inside of the backing plate 3. The fixed holding piece 4 is integrally fixed, and a cam clamp 6 having a lever 7 is attached to the corresponding portion.

Further, on both sides of the opposite end (lower left end in the same figure) of the jig plate main body 1, flange side face holding claw pieces 8 having adjusting screws 9 in a direction perpendicular to one side end thereof, and the other side end corresponding thereto are provided. Is configured by mounting a cam clamp 10 having a lever 11 positioned directly below the jig plate main body 1.

(Usage and action) To use the jig of the present invention having the above structure, as shown in FIG. 2, first, the H-shaped steel 12 is tilted 90 degrees, and the backing plate 3 of the jig plate main body 1 is cross-sectioned into the H-shaped steel 12 cross section. Then, the jig plate main body 1 is placed on the flange surface 12a by pressing the wave surface fixing holding piece 4 and the cam clamp 6 so as to narrow the wave surface 12b, and the lever 7 of the cam clamp 6 is operated to clamp the wave 12b and face each other. Operate the lever 11 of the cam clamp 10 on the end side to tighten the flange side surface 12c. At this time, if there is a difference between the width of the flange and the width of the jig plate main body 1 due to the size of the H-shaped steel, the adjusting screw 9 of the flange side surface fixed holding piece 8 is propelled inward for adjustment.

That is, by this, the jig of the present invention is fixedly fixed to the H-section steel.

Then, in this state, the jig holes 2 are sequentially drilled by the drill 15.

After completion, return both levers 7 and 11 to both cam clamps 6 and 10.
It goes without saying that the tightening according to the above procedure will be released, and the jig will be removed to prepare for the next work.

Needless to say, it is necessary to prepare several types having jig plate main bodies in an aspect corresponding to the needs of the size of H-section steel and the position of the connection hole.

[Effects of the Invention] The jig of the present invention is as described above, and the H-shaped steel end is abutted against the cross section of the contact plate 3 and the wave 12 is produced by operating the levers 7 and 11.
b and flange side 12c can be securely fixed only by tightening the cam clamps 6 and 10, and only the drilling work is required after that, so the conventional prescoring process such as scoring and center punching is omitted. Not only labor saving but also work efficiency can be significantly improved.

Further, since the jig hole 2 is set in advance, the accuracy is surely guaranteed.

From the above, the present invention is very useful for achieving the intended purpose.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a rear perspective view, and FIG. 2 is a perspective view showing a usage state. 1 ... Mainly jig plate, 2 ... Jig hole, 3 ... Patch plate, 4 ...
… Wave surface fixing gripping piece, 5 …… Adjusting screw, 6 …… Cam clamp, 7 …… Lever, 8 …… Flange side fixing gripping piece, 9 …… Adjusting screw, 10 …… Cam clamp, 11 …… Lever, 12 …… H type steel, 12a …… Flange surface.

Claims (1)

[Scope of utility model registration request] 1. A backing plate 3 is fixed in a downward direction perpendicular to one end of a jig plate main body 1 in which a jig hole 2 having a predetermined hole diameter is arranged at a preset portion, and the backing plate 3 is adjusted in the vertical direction near the center of the inside. A wave surface fixing holding piece 4 having a screw 5 is fixed and a cam clamp 6 having a lever 7 is attached to the corresponding portion, and both ends of the jig plate main body 1 on opposite sides are adjusted at right angles to the downward direction. An H-shaped steel end characterized in that a flange side fixed holding piece 8 having a screw 9 and a cam clamp 10 having a lever 11 are attached to the other side end corresponding to this, which is positioned directly below the jig plate main body 1. Part drilling jig.