JP3361599B2 - Workpiece hole detection device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hole detecting device for detecting whether or not a hole is formed at a predetermined position of a long steel material.

[0002]

2. Description of the Related Art For example, when welding ends of a pair of channel steels (1) and (2) as shown in FIG. 4, these channel steels (1) and (2) are installed on a jig. When there is directionality in the installation direction of one of the channel steels (2), conventionally, as shown in FIG. 5, from the left and right (or upper and lower) ends formed in the channel steel (2). Since the position of the hole (3) of the is different, by detecting the position of the hole (3),
I am able to confirm whether it is installed in the right direction.

In this case, conventionally, the hole (3)
A phototube is used as a means for detecting the position of the hole, and the hole (3) is determined depending on whether the light of the phototube passes through the hole (3).
Is trying to detect whether or not it is in that position.

Alternatively, in a method different from this, a cylinder such as an air cylinder is utilized, and it is detected whether or not the rod of the cylinder enters the hole (3) to detect such a hole.

[0005]

SUMMARY OF THE INVENTION In the above method,
In the case of using a photoelectric tube, there is a drawback in that the glass tube surface of the photoelectric tube malfunctions, or the lead wire of the photoelectric tube is caught by the material and comes off. In particular, there is a disadvantage that the glass of the photoelectric tube is easily contaminated at a welding site or the like, and malfunction is more likely to occur.

On the other hand, even in the case of detecting by a cylinder, the cylinder itself is a very expensive device and requires piping, so that there is a drawback that the piping is likely to come off and malfunction occurs.

The present invention has been made for the purpose of eliminating such inconvenience and making it possible to detect whether or not there is a hole at a predetermined position with a simple device.

[0008]

In order to solve the above-mentioned problems, a hole detecting device for a work according to the present invention is a device for detecting a hole formed in a work, comprising a surface on which the hole is formed. Is equipped with an abutting part where the surfaces of the workpieces in different directions abut.
A pin that can be inserted into the hole is projected on the rotating member,
The rotating member is pivotally attached to the support portion so as to be rotatable in a direction in which the pin is inserted into the hole.

[0009]

For example, when the work is installed from above, when the pin is inserted into the hole formed in the side surface of the work, the rotating member can relatively rotate in the work direction. It can be detected that a hole is formed.

[0010]

1 is a side view of such a hole detecting apparatus of the present invention. In the figure, (6) is an L-shaped lever as a rotating member of the present invention, which projects in the same direction as the other piece (8) in the vicinity of the tip of one piece (7) in the vertical direction. A pin (9) is attached. The other piece (8) has the upper surface thereof as the contact portion (10) of the work. The lever (6) is rotatably attached to the mount (12) by a horizontal pin (11) in the vicinity of the corners of the pieces (7) and (8).

FIG. 2 shows a case where holes are formed at predetermined positions, and when holes (3) are formed on the side surface of the web of the channel steel (2) which is the work, the grooves are formed. When the bottom surface of the shaped steel (2) is installed from above so as to abut against the abutting portion (10), the lever (6) rotates due to the weight of the channel steel (2), and the pin (9) is rotated. Can enter the hole (3). Therefore, since the channel steel (2) can be lowered to the upper surface of the mounting base (12) below while keeping the posture as it is, it can be confirmed that the hole (3) is formed. I can. Of course, it can also be detected by the rotation of the lever (6).

On the other hand, as shown in FIG. 3, when the hole (3) is not formed at a predetermined position, the tip of the pin (9) comes into contact with the side surface of the channel steel (2) to rotate. I can't do it. Then, in the state where the channel steel (2) is kept as it is, while rotating the lever (6), the mounting base (1
2) Since it cannot be lowered to the upper surface, it can be detected that the hole (3) is not formed at a predetermined position. Similarly to the above, it can be confirmed that the hole (3) is not formed by rotating the lever (6).

[0013]

As described above, according to the present invention, a pivot member such as a lever having a pin that can be inserted into a hole of a workpiece is pivotally attached to a support portion or the like to form a hole at a predetermined position. It is possible to easily detect whether or not a hole is formed, and unlike the phototube or cylinder, there is no risk of malfunction due to dirt on the lens surface or detachment of piping, and the hole position can always be detected reliably. There is. Moreover, as described above, the device itself is extremely inexpensive because it is simply configured to pivotally attach the rotating member such as the lever and the pin.

[Brief description of drawings]

FIG. 1 is a side view of a hole detecting device of the present invention.

FIG. 2 is a side view showing a state of a work and a rotating member when a hole is detected in the work.

FIG. 3 is a side view showing a state of the work and a rotating member when no hole is formed in the work.

FIG. 4 is a perspective view of a joining portion of channel steel for joining ends at right angles.

FIG. 5 is a side view of a channel steel having holes formed on its side surface.

[Explanation of symbols]

(2) Work (6) Lever (9) Pin (10) Workpiece contact part

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G01B 5/00-5/30 G01B 21/00-21/32

Claims (2)

(57) [Claims] 1. A device for detecting a hole formed in a work , wherein the hole is provided in a rotating member having a contact portion with which a surface of the work in a direction different from the surface in which the hole is formed comes into contact. What
A hole detecting device for a work , wherein an insertable pin is provided in a protruding manner, and the rotating member is pivotally attached to a supporting portion so as to be rotatable in a direction in which the pin enters the hole. 2. The workpiece hole detection device according to claim 1, wherein the rotating member is an L-shaped lever.