JPH0633046U - Sampling device - Google Patents

Abstract

(57) [Summary] [Purpose] Easy to apply to various structures,
(EN) Provided is a sampling device that is lightweight, compact, easy to handle, and capable of collecting test pieces with little heat effect. [Structure] A rotating mechanism portion 13 that rotatably supports a U-shaped electrode 22 like a jump rope is supported on a pedestal 1 so that it can be horizontally and vertically swung and vertically and horizontally slidably.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sampling device for various structures.

[0002]

[Prior art]

 In the past, a bowl-shaped cutter was used to cut out small test pieces without penetrating the plate thickness in the event of cracks, blowholes, or other defects in joints of various structures, or for the purpose of diagnosing their life expectancy. It was done using a mechanical tool equipped with a cutter, a drill and a grinder, etc.

[0003]

[Problems to be solved by the device]

 However, when a mechanical tool is used, it is necessary to fix the tool leg to the structure by welding in order to receive the cutting reaction force. Therefore, it cannot be applied to a structure made of a material that is difficult to weld. There was a point. In addition, since the tool is large, it cannot be applied to narrow spaces, and since it can only be applied to flat plates, it cannot be applied to fillet joints and small diameter pipes.

When a drill and a grinder are used, the sampling surface is rattled and it takes a lot of time to rework after sampling, and since the heat affected zone is wide, not all of the cut out test pieces can be used. There was a problem.

Therefore, an object of the present invention is to provide a sampling device that can be easily applied to various structures, is lightweight, small in size, is easy to handle, and can collect a test piece with almost no thermal effect. It is in.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the structure of the present invention is a device for collecting test pieces for diagnosing the remaining life of various structures, in which a U-shaped discharge electrode rotates like a jump rope. The rotation mechanism part that supports the vertical movement mechanism is supported on the pedestal so that it can be horizontally and vertically swung through the horizontal and vertical swivel shafts. It is characterized in that it can be moved to.

[0007]

[Action]

 1 and 2 show application examples of the present sampling device. Fig. 1 shows the sampling of the fillet joint, and Fig. 2 shows the sampling of the sidewall material. The vertical swivel shaft 3 on the gantry 1 can make the electrode 22 of the rotating mechanism 13 from the downward state to the horizontal state of 45 degrees and 90 degrees. Similarly, the horizontal swivel axis 4 on the gantry 1 is used when the sampling sampling position is oblique with respect to the gantry 1.

FIG. 3 shows a sampling procedure. In FIG. 3, I is a vertical slide mechanism 5 (see FIG. 1) for adjusting the sampling depth (P). The connecting plate 16, the holder 21, the electrode 22 and the like which form the rotating mechanism 13 are lowered from the radius R of rotation of the electrode 22 to the height (h) of the rotation center axis. At this time, the electrode 22 is set in a direction substantially perpendicular to the connecting plate 16.

Reference numeral II shows a discharge start state, in which an arc 23 is generated between the electrode 22 and the workpiece 24. Although not shown, processing water is sprayed from the holder 21 toward the arc 23.

With respect to III, the electric discharge machining progresses, and the electrode 22 is rotationally machined just below the connecting plate 16 (θ = 0 degree) by the rotating mechanism section 13.

In IV, the connecting plate 16 is moved in parallel by X mm according to the sampling length by the left and right slide mechanism (see FIG. 1).

[0012] V indicates a state in which control is again switched to the rotation mechanism section and the electrode 22 is rotationally processed and sampling is completed.

VI shows a cross-sectional view taken along the line A-A in FIG. V, and VII shows a bird's-eye view of the sampling material 25 sampled.

At this time, the sectional view taken along the line AA differs depending on the shape of the electrode 22. Further, an arc 23 is generated at the tip of the electrode 22 in FIGS. III and VI, and the working water is filled, but it is not shown.

As described above, by rotating and linearly moving the U-shaped or V-shaped electrode 22, it is possible to sample the test piece from the fillet joint portion that could not be conventionally processed.

[0016]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In FIG. 4 and FIG. 5, reference numeral 1 denotes a pedestal to which four legs 2 are attached on the lower surface thereof. The leg 2 is fixed on the floor using a sucker or a magnet.

Reference numerals 3 and 4 are for changing the direction of the electrode 22. Reference numeral 3 is a vertical swivel axis that swivels in a vertical direction with respect to the gantry 1, and 4 is a horizontal swivel axis that similarly swivels in a horizontal direction with respect to the gantry 1. .

Reference numeral 5 denotes a vertical slide mechanism for adjusting the electrode 22 to a vertical position with respect to the surface to be processed (this also serves as a support member capable of horizontal and vertical rotation on the pedestal). When is turned, the slide portion 8 screwed onto the screw 6 moves up and down.

A left and right slide mechanism 9 for moving the electrode 22 in parallel to the surface to be processed is mounted on the slide portion 8.

The left and right slide mechanism 9 is configured such that the screw 10 is rotated by the servo motor 11 and the slide portion 12 having the rotating mechanism portion 13 is moved left and right.

In the servo motor 11, when a changeover switch of a control panel (not shown) is automatically set, the electrode 22 is automatically advanced and retracted in the cutting direction so that the discharge voltage becomes constant. .

As shown in FIG. 6, the rotation mechanism unit 13 transmits the rotation of the servo motor 15 to the worm 27, the worm gear 14, the shaft 28, and the first pulley 17.

Then, in order to make the peripheral portion of the electrode 22 compact, the above-mentioned members are arranged above, and the rotation of the first pulley 17 is transmitted to the second pulley 18 by the connecting plate 16 via the timing belt 19. ing.

The second pulley 18 is fixed to the shaft 20 supported by the connecting plate 16 via bearings 29, and the holder 21 of the electrode 22 is fixed by bolts.

The holder 21 has a support structure for the electrodes 22, and is provided with an energizing cable, a supply hose for the processing water 26, and the like.

As shown in FIG. 7, the electrode 22 is made of a silver / tungsten material and has a plate thickness T of 2 to 3 mm and a plate width of about 10 mm, and is V-shaped (see A in FIG. 7) or U-shaped (see FIG. 7). (See B of 7) The shape is used. In short, the shape may be selected according to the required cross section of the sample material 25.

It is needless to say that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

[0028]

[Effect of device]

 As described above, according to the present invention, since the U-shaped electrode is provided so as to be rotatable and linearly movable, it can be easily applied to various structures such as a fillet joint portion and a small-diameter pipe, and can be lightweight, It is small and easy to handle. In addition, it is possible to collect samples with little heat effect.

[Brief description of drawings]

FIG. 1 is a side view showing a basic configuration and an application example of the present invention.

FIG. 2 is a side view showing an application example different from the basic configuration of the present invention.

FIG. 3 is an explanatory view of the operation of the present invention.

FIG. 4 is a side view showing an embodiment of the present invention.

FIG. 5 is a front view of the same.

FIG. 6 is an enlarged cross-sectional view of the rotation mechanism section of the same.

FIG. 7 is an explanatory diagram of the same electrode.

[Explanation of symbols]

 1 Stand 3 Vertical rotation axis 4 Horizontal rotation axis 5 Vertical slide mechanism 9 Horizontal slide mechanism 13 Rotation mechanism part 22 Electrode 25 Sampling material

Claims (1)

[Scope of utility model registration request] 1. A device for collecting test pieces for the purpose of diagnosing the remaining life of various structures, which comprises a rotating mechanism portion for rotatably supporting a U-shaped discharge electrode like a jump rope. In addition, a supporting member supported horizontally and vertically through a horizontal pivot and a vertical pivot is supported by a vertical slide mechanism and a horizontal slide mechanism so as to be movable in the vertical and horizontal directions. And sampling equipment.