JPH0814884A - Weld bead measurement management device - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the measurement and control of welding beads. [Arrangement] The arithmetic and control unit 17 includes a controller 20
Drive signal 21 from bead controller 1 to
The bead tracer 1 traces the surface of the welding bead 3, and the bead shape signal 23 detected by the bead tracer 1 is stored in the data storage unit 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welding bead measurement management device.

[0002]

2. Description of the Related Art A large number of weld beads are formed on structures such as ships, bridges and high-rise buildings. The weld beads provided at such places are particularly susceptible to fatigue loads, and It will be necessary to manage the weld bead in a manner.

Conventionally, a mold of a welding bead is formed by using a clay-like molding material, and the shape of the welding bead is measured from the mold to obtain a stress concentration factor. .

[0004]

However, when the mold of the weld bead is taken and measured, it takes as long as ten hours or more from mold taking to material hardening, so that the efficiency of the measuring work is extremely high. When the number of weld beads to be measured is bad and reaches several hundreds, it is substantially difficult to deal with.

Further, the management means of the measured data is complicated because it depends on a bookkeeping or the like.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a welding bead measurement management device capable of easily measuring and managing the welding bead.

[0007]

According to the present invention, there is provided a contracer driving section for sending a driving signal to a bead contracer tracing a surface of a welding bead, and a data storage section for storing a bead shape signal detected by the bead contracer. The present invention relates to a welding bead measurement management device, which is provided with an arithmetic control unit for controlling a contour tracer drive unit and a data storage unit.

In this case, the bead shape signal stored in the data storage unit is input to calculate the radius of curvature of each weld bead toe, and the stress concentration coefficient is obtained based on the arithmetic constant input in advance and the stress concentration coefficient is calculated. An external operation control device capable of collectively managing the above may be provided with an external input / output unit that can be connected.

[0009]

The operation of the present invention is as follows.

The arithmetic and control unit sends a drive signal from the contracer drive unit to the bead contracer to cause the bead contracer to trace the surface of the welding bead and detect the shape of the welding bead. The detected bead shape signal is stored in the data storage unit.

An external arithmetic and control unit is connected by an external input / output unit so that the external arithmetic and control unit can obtain the stress concentration factor of each welding bead based on the bead shape signal stored in the data storage unit, and Try to manage all at once.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 5 show an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a bead contracer which traces the surface of the welding bead 3 with a needle-shaped stylus 2.
Is a welding bead measurement management device main body.

As shown in FIG. 2, the bead contracer 1 includes a driving device 5 such as a motor, a horizontal screw 6 connected to the output shaft of the driving device 5, and a screw 6 to which the screw 6 is screwed. Nut member 7 extending in the longitudinal direction
A support bracket 8 fixed to the nut member 7, a support bracket 8 pivotably supported in a vertical direction 10 via a pin 9 through a pin 9, a stylus 2 attached to a tip end thereof, and a balance weight 11 attached to a rear end thereof. Via a measuring arm 12 mounted so that its position can be adjusted, an operating transformer 13 mounted on the side of the support bracket 8 opposite to the pin 9, a lower end portion fixed to the measuring arm 12 and a spherical bearing 14 at the upper end portion. And the detection arm 16 connected to the input shaft 15 of the operating transformer 13.

Further, as shown in FIG. 3, the welding bead measurement management device main body 4 has a CPU (Central Process).
processing unit 17 such as
A program storage unit 18 such as M (Read Only Memory), a display unit 19 such as a liquid crystal panel, an operation unit 20 such as various switches, and a contracer drive that sends a drive signal 21 to the drive unit 5 of the bead tracer 1. Section 22, a bead shape signal input section 24 for inputting a bead shape signal 23 detected by the operation transformer 13 of the bead contracer 1, an amplification section 25, a signal conversion section 26 for converting an analog signal into a digital signal, and an operation. RAM (Rando) that stores the bead shape signal 23 from the transformer 13
m Access Memory), a data storage unit 27 such as a removable IC card, and a bead shape signal 23 stored in the data storage unit 27 are input to obtain and obtain a stress concentration coefficient for each welding bead 3. An external input / output unit 29 that can be connected to an external arithmetic and control unit 28 for collectively managing the stress concentration factor together with the bead number, the bead shape signal 23, and the like, and each unit 17 to 20, 2.
2, 26, 27 and 29 are connected to each other and a signal bus 30 is connected.

In the figure, 31 is an XT recorder for tracing the bead shape signal 23, 32 is an external arithmetic control unit main body, 33 is a display unit of the external arithmetic control unit 28, and 34 is an input of the external arithmetic control unit 28. The device 35 is an external storage device such as a floppy disk device provided in the external arithmetic and control unit 28.

Next, the operation will be described.

In the present invention, the welding beads 3 are collectively measured, and later, the stress concentration factors are collectively calculated and the data is managed, or the welding beads 3 are measured one by one. At the same time, the stress concentration coefficient can be calculated and the data can be managed.

When the weld beads 3 are collectively measured and the stress concentration factors are collectively calculated and the data is managed at a later date, first, the bead control is performed on the weld bead 3 to be measured. Set the tracer 1 in place.

At this time, the measuring arm 12 is made to be orthogonal to the welding bead 3, and the stylus 2 is placed at the welding bead 3.
It should be located on the opposite side of the bridge.

In this state, the welding bead measurement management device main body 4 is started up, and the welding bead 3 to be measured by operating the operation unit 20 according to the procedure stored in the program storage unit 18 and the display of the display unit 19. Enter the bead number of and press the start button.

Then, the arithmetic control unit 17 sends the signal bus 30
The drive signal 21 is sent to the drive device 5 via the controller 20 and the drive device 5 is driven.

Then, the screw 6 is rotated by the drive of the drive device 5, the screw 6 is screwed into the nut member 7, and the nut member 7 moves to the drive device 5 side.

Then, the nut member 7 and the support bracket 8 are attached.
Also, the measuring arm 12 supported via the pin 9 moves to the drive device 5 side, and the stylus 2 at the tip of the measuring arm 12 traces the welding bead 3, as shown in FIG.

As a result, the measuring arm 12 swings in the vertical direction 10 about the pin 9, and the detection arm 16 fixed to the measuring arm 12 moves in the vertical direction 10 and also moves in the horizontal direction for detecting. The horizontal movement of the arm 16 causes the input shaft 15 to move in and out through the spherical bearing 14, causing the operating transformer 13 to change in voltage.

This change in voltage is sent as a bead shape signal 23 to the bead shape signal input section 24 of the welding bead measurement management device body 4, amplified by the amplification section 25, and then converted into the signal conversion section 2.
After being converted into a digital signal in 6, the signal is sent to the data storage unit 27 via the signal bus 30 and stored in the data storage unit 27.

Since the data storage unit 27 can store about 100 pieces of data if it has a capacity of 1 kilobit, if the capacity is set to about 1 megabit, all the welding beads to be measured in one structure will be measured. 3 is sufficient to store the data.

The bead shape signal 23 can be displayed by the XT recorder 31 as required.

After that, by repeating the above, data is obtained for all the welding beads 3 to be measured and stored in the data storage unit 27.

According to the present invention, the welding bead 3 is traced by the bead tracer 1 and the bead shape signal 23 is stored in the welding bead measurement management device main body 4, so that there are several hundreds of welding beads 3. Also, the measurement can be performed in a short time.

After that, only the welding bead measurement management device main body 4 is brought into the place where the external calculation control device 28 is placed, and the welding bead measurement management device main body 4 is transferred to the external calculation control device 28 via the external input / output unit 29. Connecting.

Alternatively, only the data storage unit 27 such as an IC card is removed from the welding bead measurement management device main body 4 and the data storage unit 27 is attached to the card slot of the external arithmetic and control unit 28.

Then, the external arithmetic and control unit 28 is started up,
The bead shape signal 23 stored in the data storage unit 27 is input in the order of the bead numbers to calculate the bead toe radius, and based on the arithmetic constant for obtaining the stress concentration factor from the bead radius previously input from the input device 34. A calculation is performed to obtain the stress concentration factors at both ends of each welding bead 3.

The calculated stress concentration factor is displayed on the display device 33.
As shown in Fig. 5, the toe radius r ₁, R₂Melted as a circle
It is visualized and displayed at both ends of the contact bead 3 (the circle is
A smaller value indicates a higher stress concentration factor).

Since the central portion of the weld bead 3 is gently finished by a grinder, it is sufficient to control only both ends of the weld bead 3.

Further, the obtained results are grouped into data with the bead number, the bead shape signal 23, the stress concentration coefficient and the like as one set, and are automatically filed and collectively managed.

According to the present invention, by connecting the welding bead measurement management device body 4 to the external arithmetic control device 28,
The stress concentration factor can be obtained easily and in a short time, and the stress concentration factor and the like can be easily managed.

When the stress concentration coefficient is calculated and the data is managed simultaneously while measuring the weld beads 3 one by one, the weld bead measurement management device body 4 and the external calculation control device 28 are connected in advance. The external arithmetic and control unit 2
At 8, the welding bead measurement management device main body 4 is directly controlled, and the bead shape signal 23 is directly sent to the external operation control device 28. Other than that, there is no difference from the above case.

As described above, according to the present invention, it is possible to easily carry out measurement management for the welding bead 3.

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[0042]

As described above, according to the welding bead measurement management device of the present invention, the excellent effect that the measurement management of the welding bead can be easily performed can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a schematic side view showing the internal mechanism of the bead contracer of FIG.

FIG. 3 is a schematic system diagram showing an internal mechanism of the welding bead measurement management device main body of FIG.

FIG. 4 is a schematic operation diagram showing a state where a welding bead is traced with a stylus.

FIG. 5 is a diagram showing a display of a display device.

[Explanation of symbols]

 1 Bead Contracer 3 Weld Bead 17 Operation Control Unit 21 Drive Signal 22 Contracer Drive Unit 23 Bead Shape Signal 27 Data Storage Unit 29 External Input / Output Unit 32 External Operation Control Device

Claims (2)

[Claims] 1. A contracer drive unit that sends a drive signal to a bead contracer that traces the surface of a weld bead, a data storage unit that stores a bead shape signal detected by the bead contracer, and a contracer drive unit and a data storage unit. And a control unit for controlling the welding bead. 2. A bead shape signal stored in a data storage unit is input to calculate a radius of curvature of each weld bead toe,
The welding bead measurement management device according to claim 1, further comprising an external input / output unit to which an external arithmetic control device capable of obtaining a stress concentration factor based on a previously input arithmetic constant and collectively managing the stress concentration factor can be connected.