JP4642369B2 - Welding joint measurement jig - Google Patents

Description

  The present invention relates to a welding joint measurement jig used for visual inspection of weld joint displacement or the like.

  There are several inspection items for visual inspection of architectural steel welds, but butt welding discrepancies and joint misalignment are also important inspection items. After welding, butt welding discrepancies and joint misalignment are specified. It is necessary to measure the weld joint to confirm that it is within the specified range.

  Conventionally, as shown in FIG. 16, the measuring jig 1 used for measuring the deviation of the welding joint includes two metal measuring plates 2 and 2 arranged on the same plane at intervals. It has a structure in which the lower measurement edges 3 and 3 of the measurement plates 2 and 2 are welded and joined with a metal U-shaped connecting rod 4 so that they are located on the same straight line.

  The measurement of the displacement of the joint using the measuring jig 1 is performed by bringing the measuring edge 3 of one measuring plate 2 into contact with the measured surface of one diaphragm A, and the measured surface of the other measuring plate 2 and the other diaphragm A1 having a gap. A gap gauge 5 is inserted between the two, and the scale 6 of the gap gauge 5 is read at the position of the measurement edge 3 of the other measuring plate 2 to measure the deviation between the measured surfaces of both diaphragms A and A1.

  By the way, the conventional measuring jig 1 as described above has a structure in which the metal measuring plates 2 and 2 are welded and joined with the U-shaped connecting rod 4, so that the both-side measuring plates 2 and There is a problem in that the arrangement relationship and flatness of 2 are easily distorted, the measurement accuracy is inferior, and the measuring jig 1 is heavy because it is entirely made of metal and is inconvenient to carry.

Further, it is necessary to insert a gap gauge 5 between the measurement plate 2 and the measured surface while keeping the measurement jig 1 pressed against the measured surface, and to read the scale of the gap gauge 5 for measurement. There is a problem that it takes time and effort.

  Furthermore, since the U-shaped connecting rod 4 for connecting the measuring plates 2 and 2 has a shallow U-shaped shape, measurement cannot be performed when the flange B protrudes from the diaphragms A and A1. Such a situation occurs.

  Accordingly, an object of the present invention is to form the main part of the jig from a hard synthetic resin, which is light in weight and easy to carry and handle, and further improves the measurement accuracy by eliminating the occurrence of distortion and the like. Provided is a welding jig measuring jig that can be set to a deep depth and has a very wide measurable range with respect to conditions such as flanges and can easily perform measurement work. There is.

    In order to solve the problems as described above, the invention of claim 1 is a linear guide rod formed using a hard synthetic resin, and also formed using a hard synthetic resin. It consists of a pair of measuring rods that are attached so as to protrude at right angles to the length direction of the guide rods, and can be adjusted in the length direction of the guide rods. A configuration is adopted in which a reference abutting surface that abuts against the surface is formed, and a measuring means that abuts against the other surface to be measured is provided at the tip of the other measuring rod.

  Further, the invention of claim 2 is a linear guide rod formed using a hard synthetic resin, and also formed using the same hard synthetic resin, and the guide rod is formed with respect to the length direction of the guide rod. And a pair of measuring rods that can be adjusted in the longitudinal direction of the guide rod, and the pair of measuring rods has a surface parallel to the length direction of the guide rod 90. ° It is possible to change the orientation with respect to the guide rod so that it can be changed, and at the tip of the measuring rod, two reference abutment surfaces with respect to one measured surface are formed at right angles, and the other of the measuring rod A configuration is adopted in which a plurality of insertion holes are provided at the tip for mounting a measuring tool as measuring means so as to be movable in the length direction and the right-angle direction of the other measuring rod.

The invention according to claim 3 is a linear guide rod formed using a hard synthetic resin, and is formed using the same hard synthetic resin, and is perpendicular to the length direction of the guide rod. And a pair of measuring rods that can be adjusted in the length direction of the guide rod, and the pair of measuring rods changes the plane parallel to the length direction of the guide rod by 90 ° It is possible to change the orientation with respect to the guide rod so that two reference contact surfaces with respect to one of the surfaces to be measured are formed at right angles at the tip of the measurement rod, and the tip side of the other measurement rod the attachment member of the micrometer is measurement means is obtained by employing the configuration in which the right angle variable.

  Here, the guide rod and the pair of measuring rods are formed using a hard synthetic resin, for example, polyacetal resin, and the fixing of the two measuring rods to the guide rod and the fixing of the mounting member to the other measuring rod are performed by fastening screws. The adjustment of the fixing positions of the two measuring rods with respect to the guide rod is performed by moving a loosened screw along a long hole provided in the guide rod.

  In addition, both measuring rods are fixed to the guide rod by providing a concave groove on the lower surface of the guide rod, and a square protrusion that fits into the concave groove is provided at the upper end of both measuring rods. If the measuring rod is fixed in a non-rotating manner, and the screw is loosened to release the protrusion from the groove, the posture of the measuring rod can be rotated by 90 °.

  According to the present invention, a linear guide rod formed using a hard synthetic resin and a pair of measuring rods, one of the measuring rods is formed with a contact surface against one of the measured surfaces, and the other Since the measuring means is provided at the tip of the measuring rod to make contact with the other surface to be measured, it is necessary to measure the displacement of the weld joint after welding as an appearance inspection of the steel structure welded part. Simply place both measuring rods of the measuring jig on the upper surface of the diaphragms on both sides and measure the gap between the contact surface of the diaphragm and the measuring rod with the measuring means. Will be able to.

  In addition, by forming the guide rod and both measurement rods with a hard synthetic resin, the entire measurement jig becomes lighter, easier to carry and handle, and to improve measurement accuracy by eliminating the occurrence of distortion. Can do.

  Furthermore, the measuring jig has a structure in which a pair of measuring rods are fixed to a long linear guide rod so as to protrude at right angles to the length direction of the guide rod. The depth can be set deeply, so that the range that can be measured with respect to conditions such as flanges is extremely wide, and moreover, a plurality of contact surfaces are provided on the measuring rod, and the direction of the ruler relative to the measuring rod Can be changed, or the mounting angle of the micrometer can be varied, so that it is possible to cope with a wide range of conditions of the measurement part.

  A straight guide rod made of hard synthetic resin and attached to this guide rod so as to project at right angles to the length direction of the guide rod. It consists of a pair of measuring rods that can be freely formed. A reference abutting surface is formed at the tip of one measuring rod against one surface to be measured, and the other measuring surface is formed at the tip of the other measuring rod. Measuring means for contact is provided.

  The measuring jig 11 of the first embodiment shown in FIGS. 1 and 2 is a type using a ruler as a measuring means, and a linear guide rod 12 formed using a hard synthetic resin, The guide rod 12 is formed of a synthetic resin and is formed of a pair of measuring rods 13 and 13a attached to the guide rod 12 so as to protrude at right angles to the length direction of the guide rod 12.

  The guide rod 12 is linear and has a long cross-sectional angular axis, and a stepped groove 14 is provided on the lower surface of the guide rod 12 over the entire length. Long holes 15 and 15 are formed on the upper surface on both sides in the length direction. And screw insertion holes 16 and 16 are provided at the positions of both end portions so as to penetrate the groove 14.

  The measuring rods 13 and 13a are slid into the concave groove 14 on the flat plate 17 that is slightly thinner than the concave groove 14 of the guide rod 12 and long in the vertical direction, and the upper end of the plate 17 in the width direction. The length of the plate 17 is formed in a shape that fits so as to be possible, and is coupled to three fitting protrusions 18, 19, 20 spaced in the width direction and the lower end of the plate 17. The measuring rods 21 and 13a are formed with a cross-sectionally downward L-shaped measuring block 21 along the direction, and both measuring rods 13 and 13a are attached to the guide rod 12 and have the same length from the guide rod 12 to the lower surface of the measuring block 21. The horizontal lower surface of the measurement block 21 and the adjacent outer vertical surface are parallel to the length direction of the guide rod 12, and are respectively the reference contact surfaces 22 and 23 for the surface to be measured.

  The measurement rods 13 and 13a are attached to the guide rod 12 by making the surface directions of the measurement rods 13 and 13a parallel to the length direction of the guide rod 12, and the fitting protrusions 18, 19, and 20 at the upper end. When the butterfly screw 25 inserted from the elongated hole 15 is screwed into the screw hole 24 provided in the center fitting head 19 and tightened with the butterfly screw 25 and tightened at the center position with the butterfly screw 25, both end portions are fitted. Since the upper ends of the fitting projections 18 and 20 are in contact with the inner surface of the concave groove 14, both the measuring rods 13 and 13 a can be firmly fixed to the guide rod 12 without rattling, and the butterfly screw 25 is attached. When loosened, it is possible to adjust the positions of the measuring rods 13 and 13 a in the length direction of the guide rod 12 in the range of the long hole 15.

By the way, the guide rod 12 is about 300 mm, and the vertical lengths of both measuring rods 13 and 13 a are about 150 mm, so that the measuring jig 11 becomes deep and can be compared with the diaphragms A and A ₁ . Measurement is possible even when the flange B is overhanging.

  Further, in a state where the surface directions of the two measuring rods 13 and 13a are arranged at right angles to the length direction of the guide rod 12, the center fitting protrusion 19 fits into the concave groove 14, and the fitting protrusions 18 on both sides are fitted. The relationship between the guide rod 12 and the fitting protrusions 18, 19, and 20 is set so that the contact rod 20 and the outer surface of the guide rod 12 are in contact with each other.

  The measuring rod 13 or 13a is arranged on the guide rod 12 with the butterfly screw 25 using the screw insertion hole 16 at the end in a state in which the surface direction is arranged at right angles to the length direction of the guide rod 12. If 13 or 13a is fixed, it can be set in a right angle state in which the outer surface of the measuring rod 13 or 13a coincides with the end of the guide rod 12.

  The measuring means in the first embodiment uses a ruler 26, and the ruler 26 is placed along the length direction of the measuring rods 13 and 13a on one end face of the measuring block 21 in both measuring rods 13 and 13a. A holder 27 for attachment is provided.

  The holder 27 is moved in a direction perpendicular to the insertion hole 28 through which the ruler 26, which is overlapped with the end surface of the measuring rod 13 in the longitudinal direction, is movably penetrated in the longitudinal direction on one end surface of the measuring block 21. An insertion hole 29 that allows penetration is formed, and a ruler 26 inserted into the insertion hole 28 or 29 can be fixed with a screw 30 attached to a holder 27.

  The measuring jig 11 of the first embodiment is configured as described above, and as a visual inspection of the building steel welded portion, to measure the deviation of the weld joint after welding, Both measuring rods 13 and 13a are fixed by tightening a butterfly screw 25 to assemble the measuring jig 11 into a U-shape, and a ruler 26 is inserted into a holder 27 of one measuring rod 13a.

In this state, the measuring rods 13 and 13a are made to face the upper surfaces of the two-sided diaphragms A and A1 to be measured, and the reference of the measuring block 21 in the one measuring rod 13 on the upper diaphragm A at the step as shown in FIG. When the contact surface 22 is placed, as shown in FIG. 1A, a gap is generated between the lower diaphragm A ₁ and the contact surface 22 of the one measuring rod 13a. Is measured on the diaphragm A ₁ and the scale of the ruler 26 is read at the position of the end of the contact surface 22 of one measuring rod 13a, the dimension of the gap can be measured.

  Next, the measurement jig 11a of the second embodiment shown in FIGS. 3 to 6 is an example in which the micrometer 31 is used as the measurement means as compared with the measurement jig 11 of the first embodiment. The same parts as those in the first embodiment will be described using the same reference numerals. The same applies to the subsequent embodiments.

  In the measuring jig 11a of the second embodiment, the mounting phase of the two measuring rods 13 and 13a with respect to the guide rod 12 is adjusted in accordance with the conditions of the measuring portion, and one measuring rod 13a has a plate 17 on one side surface of the plate 17. And a mounting member 33 of the micrometer 31 is provided on one surface side at the lower end of the face plate 32 so that the angle can be varied at a right angle around a horizontal axis. ing.

  On the surface to which the attachment member 33 is attached at the lower end of the face plate 32, a vertical groove 34 and a horizontal groove 35 are provided in a cross shape intersecting at right angles, and the intersection of both the grooves 34, 35 is set at a screw insertion hole 36. Is horizontally formed, and the mounting member 33 is formed in an L shape, and a protrusion 37 is provided on the vertical mounting surface to the face plate 32 to be fitted in one of the grooves 34 or 35. The butterfly screw 38 inserted through the insertion hole 36 is screwed into the screw hole 38a of the attachment member 33, whereby the attachment member 33 is fixed to the face plate 32. When the butterfly screw 38 is loosened, the attachment member 33 of the attachment member 33 is fixed. The posture can be changed by 90 °.

A horizontal portion of the mounting member 33 is provided with a vertically penetrating mounting hole 39 for inserting the shaft portion 31 a of the micrometer 31 and a cut 40 reaching the mounting hole 39 from the tip, and the micrometer inserted into the mounting hole 39. 31 can be fixed by tightening the portion of the cut 40 with the screw 41, and the mounting member 33 can be fixed by loosening the screw 41.
The fixed height position of the micrometer 31 with respect to the horizontal portion can be arbitrarily adjusted.

  The measuring jig 11a of the second embodiment is configured as described above, and in order to measure the displacement of the welding joint, the measuring rods 13 and 13a are fastened to the guide rod 12 by tightening the butterfly screw 25. The measurement jig 11a is assembled in a U shape, and the micrometer 31 is attached to the attachment member 33 of one measurement rod 13a.

  The measuring jig 11a is positioned on a smooth reference plate and the contact surfaces of both measuring rods 13 and 13a are in contact with the reference plate. 31b is brought into contact, and the fixing position of the micrometer 31 with respect to the mounting member 33 is adjusted so that the pointer of the micrometer 31 points to the scale 0, and the contact surface 22 of both measuring rods 13 and 13a and the micrometer 31 The relationship of the probe 31b is set to 0.

In this state, the measuring rods 13 and 13a face the upper surfaces of the diaphragms A and A ₁ to be measured, and the contact surface of the measuring block 21 in the one measuring rod 13 faces the upper diaphragm A at the step as shown in FIG. When 22 is placed, a gap is generated between the lower diaphragm A ₁ and the contact surface 22 of the one measuring rod 13a, and the probe 31b of the micrometer 31 is lowered by this gap to be on the diaphragm A ₁ . If the scale pointed to by the pointer of the micrometer 31 is read, the dimension of the gap can be directly measured.

  The measurement jig 11a of the second embodiment can be changed into several patterns, and since the attachment of the micrometer 31 is variable by 90 °, as shown in the figure, the measurement jig 11a is variable. Measurement can be performed in a state where the top and bottom of 11a and the micrometer 31 are vertical and in a state where the measurement jig 11a is horizontal and the micrometer is vertical.

  In the usage example of FIG. 3, both measuring rods 13 and 13 a are fixed to the guide rod 12 so that the surface direction of both measuring rods 13 and 13 a is along the length direction of the guide rod 12.

  In the usage example of FIG. 4, both measuring rods 13 and 13 a are fixed to the guide rod 12 so that the surface directions of both measuring rods 13 and 13 a are orthogonal to the length direction of the guide rod 12.

  In the usage example of FIG. 5, one measurement rod 13 a is fixed to the end portion of the guide rod 12 so that the surface direction is orthogonal to the length direction of the guide rod 12, and the other measurement rod 13 is fixed to the guide rod 12. It is fixed so that the surface direction is along the length direction.

  These drawings show the case where the measurement is performed with the measurement jig 11a and the micrometer 31 vertically aligned, but if the micrometer 31 is rotated 90 °, the measurement jig 11a is leveled. In this case, the contact surface 23 of the measurement block 21 is used.

  The measuring jig 11b of the third embodiment shown in FIGS. 7 to 9 uses a micrometer 31 as a measuring means, and the angle of the micrometer 31 is changed to 45 ° and 90 ° perpendicular to the measuring jig 11b. A 45 ° inclined contact surface 42 is provided between the horizontal contact surface 22 and the outer vertical contact surface 23 in the measurement block 21 of the other measuring rod 13. .

  In the third embodiment, the concave groove 14 of the guide rod 12 is opened on the back surface side and the bottom surface side, the long hole 15 is provided on the front surface side, and the fitting head 18a at the upper ends of both measuring rods 13 and 13a is Both sides of the guide rod 12 are measured by screwing a butterfly screw 25 formed by protrusions continuous in the width direction on both surfaces so as to be fitted in the concave groove 14 and inserted into the long hole 15 into a screw hole 24 provided on the side surface of the protrusion. The collars 13 and 13a are fixed.

  On the other hand, a vertical groove 34, a horizontal groove 35, and a 45 ° inclined groove 43 are provided on one surface of the lower end of the face plate 32 of the measuring rod 31, and the attachment member 33 is vertically attached to the face plate 32. A protrusion 37 is provided on the surface to be fitted into one of the grooves, and the angle of the micrometer 31 with respect to the measurement jig 11b is selected by selecting the grooves 34, 35 and 43 into which the protrusion 37 is fitted. As shown in FIG. 9C, in addition to the vertical measurement in FIG. 9A and the horizontal measurement in FIG. Using the surface 42, the measurement jig 11b can be measured at an inclination angle of 45 °.

  The measurement jig 11c of the fourth embodiment shown in FIGS. 10 to 13 is a type using a ruler as a measuring means, and the measurement jig 11d of the fifth embodiment shown in FIGS. In the fourth embodiment, the micrometer 31 is used as the measuring means.

  In the former measuring jig 11c of the fourth embodiment, one measuring rod 13a has a vertically long rectangular shaft shape, and holders 27 are fixed to the three surfaces on the tip side thereof with screws, and the ruler 26 is attached to the measuring rod 13a. An insertion hole 28 on the front side for vertical attachment along the length direction, a horizontal insertion hole 44 orthogonal to the insertion hole 28, and horizontal insertion holes 45 on both sides are formed.

  As shown in FIG. 11, a leaf spring 46 that elastically presses and holds the inserted ruler 26 is incorporated inside each of the insertion holes 44 and 45 so that the ruler 26 does not easily move and fall off. ing.

  The other measuring rod 13 is formed slightly longer than the one measuring rod 13a, and a block-shaped head 47 having a slightly wider width is provided at the tip, and the lower surface, both side surfaces, and the rear surface of the tip are the reference contact surface 22. 48.

  A holder 50 that forms an insertion hole 49 for horizontally inserting the ruler 26 is fixed to one or both upper portions of the front and rear surfaces of the other measuring rod 13.

  In the fourth embodiment, the concave groove 14 provided in the lower surface of the guide rod 12 is formed shallowly, and the square projection-like fitting projections 18, 19, 20 provided at the upper ends of both measuring rods 13, 13a are also provided. When the screw 25 is tightened, the measuring rod 13 can be fixed to the guide rod 12 in a non-rotating manner by tightening the screw 25, and when the screw 25 is loosened and the fitting protrusions 18, 19, and 20 are separated from the concave groove 14, The posture of the measuring rods 13 and 13a can be quickly rotated by 90 °.

FIG. 12 (A) shows a state in which a ruler 26 is vertically attached to the front surface of one measuring rod 13a and is used for the same measurement as that of the first embodiment of FIG. 1, and FIG. On the other hand, when the ruler 26 is inserted into the insertion hole 45 on the side surface and the front surface of the front diaphragm A at the front and rear steps is brought into contact with the reference contact surface located on the back surface of the head 47 of the one measuring rod 13, A gap is generated between the position diaphragm A ₁ and the rear end surface of the one measuring rod 13a. The ruler 26 is pushed in so that the tip is brought into contact with the diaphragm A ₁ and the rear end portion of the one measuring rod 13a. If the scale of the ruler 26 is read at the position, the size of the gap can be measured.

  As another measuring method of the fourth embodiment, for example, the ruler 26 is inserted into the insertion hole of the other measuring rod 13, and the reference abutting surface 48 on the side surface of the head 47 is brought into contact with one of the both side diaphragms. Then, the scale of the ruler 26 whose tip is brought into contact with the other diaphragm is read at the lower edge of the intermediate portion of the other measuring rod 13, and the size of the step between the reference contact surface 48 and the lower edge of the intermediate portion previously displayed is subtracted from this value. Thus, the difference between the diaphragms on both sides can be measured.

  FIG. 13 shows a modification of the above-described fourth embodiment, in which both lower end surfaces of the other measuring rod 13 are cut into inclined surfaces, the lower end horizontal contact surface 22 is formed in a narrow band shape, In the case where the lower end portion of the ruler 26 is also formed with a narrow tip and is placed on the surface to be measured for measurement, the occurrence of measurement errors due to the front / rear tilt of the measurement jig 11c is suppressed, and the measurement accuracy is improved. ing.

  In FIG. 13, the entire length of the other measuring rod 13 is straight. However, as shown in FIG. 10, a wide head 47 may be provided at the lower end.

  The measurement jig 11d of the fifth embodiment shown in FIGS. 14 and 15 is a type using a micrometer 31 as a measuring means, and one measurement rod 13a is formed in a gate shape whose lower part is a pair of opposed pieces 51. The mounting member 52 of the micrometer 31 is formed between the tips of the opposing pieces 51 so as to be rotatably supported by supporting both ends with pipet screws 53 screwed to the opposing pieces 51, The shaft portion of the micrometer 31 is clamped by a clamping member 55 fixed on one surface side with a screw 54.

  An angle fixing block 57 is attached to the front concave portion 56 of the one opposing piece 51 with a screw 58, and a rotation composed of a projection 59 and a concave groove 60 fitted to each other on the overlapping surface of the angle fixing block 57 and the one opposing piece 51. Stopping means is provided, and a square head 61 is provided at the end of the angle fixing block 57 facing the one facing piece 51, and two kerfs 62 and 63 are formed in the square head 61 in a right angle positional relationship. The angle fixing block 57 is provided with a protrusion 64 that engages with one of the kerfs 62 or 63.

  The measuring jig 11d of the fifth embodiment is configured as described above. In FIG. 15, the measuring jig 11d is used for fixing the angle in a state where the projection 64 is engaged with the kerf 62 positioned on the front side of the square head 61. When the block 57 is fixed with the screw 58, the micrometer 31 is in an upright posture as shown in FIG. 14, and the screw 58 is loosened to remove the projection 64 of the angle fixing block 57 from the cut groove 62, thereby attaching the mounting member. When the angle fixing block 57 is fixed by engaging the projection 64 with the other groove 63 and fixing the angle fixing block 57, the micrometer 31 is fixed at a right angle to the one measuring rod 13. be able to.

  In the fifth embodiment, by making the angle of the micrometer 31 variable, the same measurement as described in the second and third embodiments can be performed.

  In each embodiment, as a hard synthetic resin for forming each member such as the guide rod 12, the measurement rods 13, 13a, the attachment member 33, the attachment member 52, etc. constituting the measurement jigs 11, 11a, 11b, and 11c. For example, a polyacetal resin can be used, and such a resin is light in weight, excellent in strength and heat resistance, and has an advantage that distortion and deformation hardly occur at the time of assembly and over time, and accuracy can be improved. It will be.

(A) is a front view of the use condition which shows the measuring jig of 1st Example based on this invention, (B) is the side view An exploded perspective view of a guide rod and a measuring rod showing the measuring jig of the first embodiment The front view of the use condition which shows the measuring jig of 2nd Example which concerns on this invention The front view which shows the other example of attachment of the measuring rod with respect to a guide rod in the same as the above. The front view which shows the further another example of attachment of the measuring rod with respect to a guide rod in the same as the above. Exploded perspective view showing a measuring rod and a mounting member for measuring means in the measuring jig of the second embodiment The front view of the use condition which shows the measuring jig of 3rd Example which concerns on this invention Exploded perspective view (A) is a side view showing a measurement state in the vertical direction of the measuring jig in the third embodiment, (B) is a side view showing a measurement state in the same horizontal state, and (C) shows a measurement state at the same inclination. Side view (A) is a front view showing a measurement state in the vertical direction of the measurement jig in the fourth embodiment, (B) is a side view of the measurement state. Expanded longitudinal sectional side view showing the measurement state of the measuring jig in the fourth embodiment (A) is a perspective view showing a measurement state in the vertical direction of the measuring jig in the fourth embodiment, (B) is a perspective view showing a measurement state of the vertical end face. (A) The front view which shows the measurement state in the perpendicular which shows the modification of the measurement jig | tool in 4th Example, (B) is a side view which shows the measurement state of the same vertical end surface (A) is a front view showing the measurement state in the vertical direction of the measurement jig in the fifth embodiment, (B) is a side view of the measurement state The disassembled perspective view which shows the structure of the attachment part of the micrometer of the measuring jig in 5th Example A perspective view of a conventional measuring jig in use

Explanation of symbols

11 Measuring jig 11a Measuring jig 11b Measuring jig 11b Measuring jig 11c Measuring jig 11d Measuring jig 12 Guide rod 13 Measuring rod 13a Measuring rod 14 Groove 15 Long hole 16 Screw insertion hole 17 Plate 18 Fitting protrusion 19 Fitting protrusion 20 Fitting protrusion 21 Measuring block 22 Reference abutment surface 23 Reference abutment surface 24 Screw hole 25 Butterfly screw 26 Scale 27 Holder 28 Insert hole 29 Insert hole 30 Screw 31 Micrometer 32 Face plate 33 Mounting member 34 Groove 35 Groove 36 screw insertion hole 37 protrusion 38 butterfly screw 39 attachment hole 40 cut 41 screw 42 inclined contact surface 43 inclined groove 44 insertion hole 45 insertion hole 46 leaf spring 47 head 48 reference contact surface 49 insertion hole 50 holder 51 facing piece 52 Mounting member 53 Pivot screw 54 Screw 55 Holding member 56 Front recess 57 Angle fixing block 58 Screw 9 projection 60 groove 61 square head 62 kerf 63 cut groove 64 projection

Claims (3)

  A linear guide rod formed using a hard synthetic resin, and also formed using a hard synthetic resin, and attached to this guide rod so as to project at right angles to the length direction of the guide rod, It consists of a pair of measuring rods whose position in the length direction of the guide rod can be adjusted freely. One reference abutting surface is formed on the tip of the measuring rod against one measured surface, and the other is measured. A welding jig measuring jig provided with measuring means for abutting against the other surface to be measured at the tip of the flange.   A linear guide rod formed using a hard synthetic resin, and also formed using a hard synthetic resin, and attached to this guide rod so as to project at right angles to the length direction of the guide rod, The guide rod includes a pair of measuring rods that can be freely adjusted in the length direction, and the pair of measuring rods guides the guide rod so that the plane parallel to the length direction of the guide rod can be changed by 90 °. It is possible to change the orientation with respect to the scissors, and on the one end of the measuring scissors, two reference abutment surfaces with respect to one surface to be measured are formed at right angles, and on the other hand, a measuring instrument as a measuring means is provided on the front end of the measuring scissors On the other hand, a welding jig measuring jig provided with a plurality of insertion holes which are mounted so as to be movable in the length direction and the right angle direction of the measuring rod. A linear guide rod formed using a hard synthetic resin, and also formed using a hard synthetic resin, and attached to this guide rod so as to project at right angles to the length direction of the guide rod, The guide rod includes a pair of measuring rods that can be freely adjusted in the length direction, and the pair of measuring rods guides the guide rod so that the plane parallel to the length direction of the guide rod can be changed by 90 °. enables change of orientation with respect to rod, is whereas the two reference contact surface with respect to one of the measurement surface is formed by right angle located at the tip of the measuring rod, the constant means measured at the tip side of the other measuring rod micro A measuring jig for welding joints with a meter mounting member with variable right angle.

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