JPH11264703A - Groove angle gauge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately measure simply a groove angle of V groove for groove welding. SOLUTION: A set of a sector reference gauge plate 1 and an index gauge plate 2 of which central angles θ1 are also formed to 45 deg. is slidably disposed such that top portions O are coincident and superposed on each other. A gauge angle adjusting mechanism 9 for adjusting a gauge angle θ0 formed by the reference standard plate 1 and the index gauge plate 2 by sliding both gauge plates 1, 2 of which the top portions O are as a center is assembled between both plates 1, 2. An angle graduation 8 put on the index gauge plate 2 is read by a cursor 5 set on one radius leg of the reference standard plate 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a groove angle gauge used for measuring a groove angle when a groove welding is performed by abutting two thick steel plates or the like.

[0002]

2. Description of the Related Art When joining two base materials such as thick steel plates, as shown schematically in FIG. 6, an abutting surface portion of two base materials a is grooved into a V-shape. So-called V groove b
Is formed by one-pass or multi-pass welding in the V groove b to solidify the welded metal c as shown by a two-dot chain line to join the two base materials a. The law has been widely adopted.

The bevel angle to be welded in various works is determined in advance, and a beveling process is performed at a factory in accordance with the predetermined bevel angle. However, when such a base material is welded and joined on site, welding quality is controlled. Therefore, prior to the welding operation, it is necessary to inspect whether or not the groove angle θ of the processed V groove b is a predetermined angle.

Conventionally, when inspecting the V-groove b, as shown in FIG.
A plurality of limit gauges e having different gauge angles θ ′ such as °, 60 °, 70 °, and 80 ° are prepared, and a required limit gauge e is selected from these and used. I was That is, in the construction plan, as the groove angle θ of the base material to be groove-welded, for example, 60 °
When it is determined to be ± 10 °, a limit gauge e having a gauge angle θ ′ of 70 ° which is the upper limit of the tolerance of the accuracy of the groove angle θ and a gauge angle θ ′ of 50 ° which is the lower limit is selected, and the First, the tip d of the limit gauge e is sequentially pressed against the V groove b at the measurement point, and the gauge angle θ 'of the limit gauge e is compared with the groove angle θ of the V groove b by comparing the magnitudes. In addition, it was confirmed whether or not the groove angle θ of the V groove b at the measurement location was within the allowable range.

[0005]

However, the limit gauge e having one gauge angle θ 'per sheet covers the entire range of groove angles from 45 ° to 90 ° generally employed in groove welding. In order to measure the groove angle θ at one measurement point, there is a problem that many gauges having different gauge angles θ ′ must be prepared. Since two different limit gauges e must be pressed against each other, there is a problem that the inspection is troublesome. Further, when the groove angle θ is changed at the welding work site, the prepared limit limit is set. The gauge e may not be able to cope with the problem. Further, the measurement of the groove angle θ can only judge that the groove angle θ is within the range of two predetermined angles, and the angle measurement with high accuracy can be performed. Can not do There is also a problem that.

In view of the above, the present invention is intended to provide a set of a plurality of gauge plates so that one set can support a wide range of groove angle measurement, and to perform highly accurate angle measurement. The purpose of the present invention is to provide a groove angle gauge that can be used.

[0007]

According to the present invention, in order to solve the above-mentioned problems, a plurality of gauge plates formed in a sector shape having a required central angle are slidably overlapped with each other so that their tips are aligned with each other. And a gauge angle adjusting mechanism for adjusting the gauge angle formed by each gauge plate by regulating the gauge plate so as to rotate around the pointed end thereof, and further comprising An angle scale is provided on the front surface of the rear gauge plate.

When the groove angle of the V groove is measured when the number of the gauge plates is two, the overlap between the two gauge plates is adjusted in advance so as to correspond to the prescribed groove angle. In the state where the gauge angle has been set, V
Make the tip end fall into the groove. If there is a gap between the V groove and the gauge angle, adjust the overlap of the two gauge plates to adjust the gauge angle to the groove angle, and read the angle scale at this time with the end of the front gauge plate. Can be accurately determined.

Further, if the number of the gauge plates is set to three, it is possible to cover a wider range from a narrow groove to a large groove.

[0010] Further, the gauge angle adjusting mechanism is provided with a screw shaft protruding at a required position of one gauge plate and an arc-shaped at a radial position centered on the tip of another gauge plate so as to penetrate the screw shaft. And a knob screwed on the screw shaft, the adjustment and fixing of the gauge angle can be easily performed.

[0011] Furthermore, by providing an arc-shaped sliding guide for engaging one part of the gauge plate to be overlapped with and slidingly guiding a part of the other gauge plate, the gauge angle can be adjusted. The sliding of the gauge plate at the time can be performed smoothly without shifting the pointed position.

On the other hand, if a configuration is adopted in which a shaft is passed through the pointed position of each gauge plate and each gauge plate is rotatably supported by the shaft, this can be applied when there is a gap in the root surface of the V groove. The angle can be adjusted more smoothly.

[0013]

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

FIGS. 1 (a), (b) and 2 show an embodiment of the present invention. For example, they are made of a SUS plate having a thickness of 1 mm, and the central angle θ _{1 is set} to 45 °. A fan-shaped reference gauge plate 1 and an index gauge plate 2 formed and provided as one set
Indicator gauge plate 2 on the surface side so as to be disposed to match the tip O of the center of each other fan slidably polymerized after, the gauge angle of the whole by adjusting the amount of overlap therebetween theta ₀ Can be changed.

More specifically, a groove-shaped sliding guide 3 is formed on the reference gauge plate 1 by bending the edge of the arc portion of the fan into a hook shape on the rear surface side. An arc portion of the gauge plate 2 is slidably received, and an arc-shaped guide hole 4 is formed at a required position in an intermediate portion at the same radius position with respect to the point O. The side (the right side in the figure) is configured as a cursor 5.

On the other hand, the index gauge plate 2 penetrates the guide hole 4 of the reference gauge plate 1 at a position close to a radial side (left side in the figure) of the reference gauge plate 1 opposite to the cursor 5. A screw shaft 6 is fixed so as to protrude from the front side of the reference gauge plate 1, and a knob 7 having an internal thread is screwed to the screw shaft 6, so that the screw shaft 6, the knob 7 and the guide hole are formed. 4, a gauge angle adjusting mechanism 9 is formed, and an angle scale 8 from 45 ° to 90 ° is attached to the front surface in steps of 1 ° in the direction along the arc of the fan, so as to correspond to the overlap with the reference gauge plate 1. The gauge angle θ ₀ can be read by the cursor 5.

Further, in order to reduce the amount of overlap between the reference gauge plate 1 and the index gauge plate 2 to zero so that the gauge angle θ ₀ becomes 90 ° when the whole is developed to the maximum,
A protruding piece 1a is provided at a radial side of the reference gauge plate 1 on the cursor 5 side, and the guide hole 4 extends to the protruding piece 1a. An extension 3a is formed at the cursor-side end of the sliding guide 3 of the reference gauge plate 1 so that the attitude of the indicator gauge plate 2 is stabilized.

As shown in FIG. 6, when measuring the angle of the V groove b formed on the abutting surface of the two base materials a, the groove angle θ is specified to be, for example, 60 °. In this case, while the knob 7 is slightly loosened, the overlap of the indicator gauge plate 2 with the reference gauge plate 1 is adjusted to set the entire gauge angle θ ₀ to 60 ° temporarily, as shown in FIG. The tip O side is dropped into the V groove b. As a result, if it completely matches the V groove b, the groove angle at the measurement point is formed at 60 ° as prescribed.

However, for example, when there is a gap between the side forming the gauge angle θ ₀ and the groove surface of the V groove b, the groove angle θ is larger than the prescribed 60 °. It will be big. In such a case, the overlapping amount of the indicator gauge plate 2 with respect to the reference gauge plate 1 is reduced until the above-mentioned gap disappears, that is, the entirety is developed around the tip O. By reading the angle scale 8 of the index gauge plate 2 pointed by the first cursor 5, the actual groove angle θ can be measured. Adjustment of the overlapping amount of the indicator gauge plate 2 with respect to the reference gauge plate 1 must be performed in a state where the tips O coincide with each other, but the indicator gauge plate 2 has a screw shaft 6 protruding from the front surface. Since the guide hole 4 of the reference gauge plate 1 and the arc portion of the fan are guided by the sliding guide 3 of the reference gauge plate 1 in the circumferential direction of the same center, the operation can be performed easily and reliably. .

On the other hand, the side forming the gauge angle θ ₀ abuts on a corner formed by the upper surface of the base material a and the groove surface, and the point O does not completely enter the V groove b. Sometimes, the groove angle θ is smaller than the prescribed 60 °, and in such a case, contrary to the above, the overlapping amount of the index gauge plate 2 with respect to the reference gauge plate 1 is increased. Similarly, by reading the angle scale 8, the actual groove angle θ can be measured.

In the above description, the reference gauge plate 1 and the index gauge plate 2 are both sector-shaped having a central angle of 45 ° so that the gauge angle θ ₀ can be adjusted from 45 ° to 90 °. Can be measured from 90 ° to 90 °. The groove angle θ is measured by reading the value of the angle scale 8 of the index gauge plate 2 indicated by the cursor 5 of the reference gauge plate 1. In this way, the groove angle θ can be accurately obtained in units of 1 °. Further, the groove angle θ can be obtained by pressing once for one measurement point of the V groove b.
The labor required for measurement can be reduced.

FIGS. 3 (a) and 3 (b) show another embodiment of the present invention, in which the central angle θ ₁ is set to 30 ° and the sector is provided as a set of three pieces. Of the reference gauge plate 1, the first indicator gauge plate 2A, and the second indicator gauge plate 2B, and the guide holes 4 are provided in both the reference gauge plate 1 and the second indicator gauge plate 2B. Gauge adjusting mechanisms 9 are assembled between the gauge plates 1 and 2A and between the gauge plates 2A and 2B so that the screw shafts 6 protrude from the front and rear surfaces of the 2A. A slide guide 3A is provided for engaging the arc portions of the gauge plate 1 and the second index gauge plate 2B to guide the sliding thereof, and further includes a first index gauge plate 2A and a second index gauge. In which denoted respectively angle scale 8 on the front of the rate 2B. Others are the same as those shown in FIG.

With the configuration shown in FIGS. 3A and 3B, the gauge angle θ ₀ can be adjusted from 30 ° to 90 °, so that the range of the groove angle θ that can be measured is narrowed by 30 °. Can be extended to earlier. Therefore, the central angle θ ₁ of each gauge plate 1, 2 A, 2 B is, for example,
If formed at 35 °, the groove angle θ that can be measured
Can be extended to a wide bevel of 105 °.

FIG. 4 shows still another embodiment of the present invention. In a configuration similar to that shown in FIGS. 3A and 3B, the first indicator gauge plate 2A and the reference gauge plate 1 are used. Instead of providing the sliding guide 3A for guiding the sliding of both the first and second indicator gauge plates 2B, the first indicator gauge plate 2
A sliding guide 3 for guiding only the sliding of A, and a second indicator gauge plate 2B on the first indicator gauge plate 2A.
Is provided with a sliding guide 3B for guiding only the sliding of the sliding guide 3B.

In the embodiment shown in FIG. 3, a separate slide guide 3A is provided on the arc portion of the first index gauge plate 2A.
The sliding guides 3 and 3B are connected to the reference gauge plate 1 and the first gauge plate as shown in FIG.
There is an advantage that the indicator gauge plate 2A can be integrally formed by bending the arc portion.

FIGS. 5A and 5B show still another embodiment of the present invention. In the configuration similar to the embodiment of FIGS. 1A and 1B, the reference gauge plate 1 and the index are shown. A shaft 10 is passed through the point O of the gauge plate 2 at which the gauge plate 2 coincides, and the reference gauge plate 1 and the index gauge plate 2 are rotatably supported on the shaft 10.

In the embodiment shown in FIGS. 5A and 5B,
Since the shaft 10 is located at the point O, it cannot be applied when there is no gap on the root surface of the V groove b as shown in FIG. 2, but as shown in FIG. This can be applied to the groove b. In this case, the operation of adjusting the amount of overlap between the reference gauge plate 1 and the index gauge plate 2 can be performed by a movement about the axis 10 itself, so that the gauge angle θ The adjustment of ₀ can be performed more smoothly than in the above embodiments.

Note that the method shown in FIG. 5 can be similarly applied to the embodiments shown in FIGS.
Further, as the gauge angle adjusting mechanism 9, a structure other than that shown in the figure may be adopted, the sliding guides 3, 3A, 3B are not indispensable, and the central angle θ _{1 of} each gauge plate. Can be selected arbitrarily, that the angle scale 8 may be applied in a manner other than that shown, that it can be applied to X-grooves, K-grooves, etc., and that the angle scale 8 does not deviate from the gist of the present invention. It goes without saying that various changes can be made in.

[0029]

As described above, according to the groove angle gauge of the present invention, the following excellent effects are exhibited. (1) A plurality of gauge plates formed in a sector shape having a required central angle are slidably overlapped with each other with their tips being coincident with each other, and the gap between each of the gauge plates is centered on the tip of each gauge plate. Since a gauge angle adjusting mechanism for adjusting a gauge angle formed by each gauge plate by restricting rotation is assembled, and further, an angle scale is provided on a front surface of the rear gauge plate. Even if the number of gauge plates is two, measurement can be performed in accordance with a wide range of groove angles, and by reading the value of the angle scale, the groove angle can be measured with high accuracy. In addition, since the groove angle at the measurement point can be measured by pressing the measurement point once, the labor required for the measurement can be reduced. (2) By configuring three gauge plates,
Depending on the method of selecting the center angle of the gauge plate, the present invention can be applied from a narrow groove to a large groove. (3) A gauge angle adjustment mechanism is formed by drilling a screw shaft drilled at a required position on one gauge plate and an arc at a radial position centered on the tip of another gauge plate so as to penetrate the screw shaft. Adjustment and fixing of the gauge angle can be easily performed by employing a configuration including the provided guide groove and the knob screwed to the screw shaft. (4) By providing a configuration in which one of the gauge plates to be overlapped is provided with an arc-shaped sliding guide for engaging a part of the other gauge plate to guide the sliding, the gauge for adjusting the gauge angle is provided. The plate can be smoothly slid. (5) By passing the shaft through the pointed position of each gauge plate and rotatably supporting each gauge plate on the shaft, the gauge angle can be adjusted more smoothly.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a groove angle gauge according to the present invention, in which (A) is a schematic front view and (B) is an exploded perspective view.

FIG. 2 is a schematic front view showing a use state.

FIG. 3 shows another embodiment of the present invention.
Is a schematic front view, and (b) is an exploded perspective view.

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

FIG. 5 shows still another embodiment of the present invention.
(A) is an exploded perspective view, and (B) is a schematic front view in a use state.

FIG. 6 is a cut-away side view schematically illustrating an example of a groove welding method.

FIG. 7 is a schematic view showing an example of a conventional angle gauge used for inspection of a groove portion.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Reference gauge plate 2 Index gauge plate 2A 1st index gauge plate 2B 2nd index gauge plate 3, 3A, 3B Sliding guide 4 Guide hole 6 Screw shaft 7 Knob 8 Angle scale 9 Gauge angle adjustment mechanism 10 axis θ ₁ center angle θ ₀ gauge angle O point

Claims (6)

[Claims] 1. A plurality of gauge plates formed in a sector shape having a required central angle are slidably overlapped with each other with their tips aligned with each other, and between each of the gauge plates, a tip of each gauge plate is provided. A gage angle adjustment mechanism for adjusting the gage angle formed by each gage plate by restricting rotation around the gage plate, and further having an angle scale on the front surface of the rear gage plate. A groove angle gauge characterized by the following: 2. The groove angle gauge according to claim 1, wherein the plurality of gauge plates are two gauge plates. 3. The groove angle gauge according to claim 1, wherein the plurality of gauge plates are three gauge plates, and an angle scale is provided on each front surface of the other two gauge plates except for the frontmost gauge plate. 4. A gage angle adjusting mechanism is formed in such a manner that a screw shaft protruding at a required position of one gauge plate and an arc shape at a radial position centered on a tip of another gauge plate so as to penetrate the screw shaft. 4. A guide groove formed in the screw shaft, and a knob screwed to the screw shaft.
The included angle gauge described. 5. An arc-shaped sliding guide for engaging one part of the gauge plate to be overlapped with and slidingly guiding a part of the other gauge plate is provided. Groove angle gauge. 6. The groove angle gauge according to claim 1, wherein a shaft is passed through the pointed position of each gauge plate, and each gauge plate is rotatably supported on the shaft.