JP2011255441A - Round member centering device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a round member centering device capable of centering not only at a vertical 90-degree position but at a 45-degree position and a crosswise 90-degree position even in a narrow workplace.SOLUTION: An L-shaped square 2 includes a tongue 3 with graduations 3a and a blade 4 with graduations 4a at a right angle with each other. A movable scale 6 with graduations 6a is slidably attached to the blade 4 in parallel with the tongue 3. A level 7 integrating a horizontal bubble tube 7a horizontally located on the tongue 3 of the L-shaped square 2, a vertical bubble tube 7b vertically located to the tongue 3 of the L-shaped square 2, and a 45-degree bubble tube 7c located at 45 degrees to the tongue 3 of the L-shaped square 2 is attached to the tongue 3 of the L-shaped square 2.

Description

  The present invention relates to a centering device for centering a round member having a circular cross section such as a pipe member or round steel.

  A conventional centering device is disclosed in Patent Document 1. This technology is a scale part that has a graduation scale and a reference scale at right angles, a measuring scale that can slide in a posture parallel to the reference scale along the scale part of the scale part, and a level measurement provided for the scale part of the scale part. And a pointer part that is provided on the measuring scale and reads the outer diameter of the round member with the scale of the scale part.

  According to this technology, the scale scale and the reference scale of the scale part are pressed against the outer surface of the round member, the measurement scale is slid in the closing direction, the round member is sandwiched between the reference scale of the scale part, and the level measurement unit is confirmed. The scale scale of the scale part is corrected horizontally, and the centering position can be determined by reading the outer diameter of the round member from the scale part position of the scale part indicated by the pointer part of the measurement scale. is there.

  By the way, in the said technique, since the bubble tube of the level measurement part was arrange | positioned horizontally with respect to the scale of a scale part, centering of a 90 degree position was possible, but centering of a 45 degree position was not able to be performed. In addition, since there is no scale on the reference scale and the measuring scale of the scale portion, the centering at the 90 ° position can be performed only at the top and bottom of the round member, and the centering at the left and right 90 ° positions cannot be performed. In addition, when there is a floor surface or an obstacle directly under the round member, the scale of the scale part cannot be pressed against the round member in contact with the floor surface or the obstacle, and the centering may not be performed. .

JP-A-7-227773

  The problem to be solved by the present invention is to solve these conventional problems, and not only the centering at the upper and lower 90 ° positions, but also the centering at the 45 ° position and the left and right 90 ° positions, and a narrow working place However, an object of the present invention is to provide a round member centering device capable of centering.

The configuration of the present invention that solves this problem is as follows.
1) A movable scale with a scale is slidably mounted in a posture parallel to the horizontal scale section on the vertical scale section of an L-shaped ruler having a horizontal scale section and a vertical scale section at right angles. Horizontal bubble tube oriented horizontally with respect to the part, Vertical bubble tube oriented perpendicular to the transverse part of the L-shaped ruler, and 45 degree bubble oriented at an angle of 45 degrees with respect to the transverse part of the L-shaped ruler A round member centering tool with a tube on the horizontal part of an L-shaped ruler 2) A horizontal bubble tube, a vertical bubble tube, and a 45 degree bubble tube are integrated into a level, and the level is attached detachably 1) the round member centering device provided with a support stay and a fixing screw on the horizontal part of the L-shaped ruler 3) a fixing screw for fixing the movable scale to a predetermined position on the vertical part of the L-shaped ruler; It exists in the instrument for centering of the round member of the said 1) or 2) provided.

  According to the present invention, the centering at the 45-degree position is performed by pressing the horizontal and vertical portions of the L-shaped ruler against the round member, sliding the movable ruler and sandwiching it between the horizontal portion and the 45-degree bubble tube. While checking, hold the centering tool at 45 degrees, read the scale of horizontal scale, vertical scale, or movable scale and center it. For centering at 90 degrees, the centering tool is oriented vertically while checking the horizontal bubble tube. Alternatively, the centering tool is oriented sideways while checking the vertical bubble tube.

  In this way, not only the upper and lower 90-degree positions, but also a total of eight positions can be centered including the 45-degree positions and the left and right 90-degree positions. In addition, since the horizontal scale, vertical scale, and movable scale are all scaled, avoiding interference with the floor or obstacles by placing the centering device in a vertical or horizontal position. And can be centered.

It is a front view of the instrument for centering of an Example. It is a left view of the instrument for centering of an Example. It is a bottom view of the instrument for centering of an Example. It is explanatory drawing which shows centering of the 45-degree position of an Example. It is explanatory drawing which shows centering of the 90-degree position of an Example. It is explanatory drawing which shows centering of the 90-degree position of an Example.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be specifically described based on examples and drawings.

  1 is a front view of the centering device of the embodiment, FIG. 2 is a left side view of the centering device of the embodiment, FIG. 3 is a bottom view of the centering device of the embodiment, and FIG. FIG. 5 and FIG. 6 are explanatory views showing centering at the 90-degree position of the embodiment.

  In the figure, 1 is a centering tool, 2 is an L-shaped ruler, 3 is a horizontal scale, 3a is a scale, 4 is a vertical scale, 4a is a scale, 5 is a support stay, 5a is a fixing screw, and 6 is a movable scale. 6a is a scale, 6b is a fitting part, 6c is a fixing screw, 7 is a level, 7a is a horizontal bubble tube, 7b is a vertical bubble tube, 7c is a 45 degree bubble tube, A is a piping member (round member), F Is the floor.

  As shown in FIGS. 1 to 3, the L-shaped ruler 2 is made of stainless steel having a horizontal part 3 having a length of 27 cm and a vertical part 4 having a length of 50 cm at right angles, and the horizontal part 3 and the vertical part 4. The scales 3a and 4a are displayed on the inner surface of. Two support stays 5 having an L-shaped cross section are fixed to the back surface of the horizontal portion 3, and a fixing screw 5 a is provided at the upper end of the support stay 5.

  The movable measure 6 is made of stainless steel having a length of 27 cm, displays a scale 6a on the surface of the L-shaped ruler 2 facing the horizontal measure 3 and has a fitting portion 6b at the base end. The fitting portion 6 b is fitted to the vertical portion 4 of the L-shaped ruler 2 and is slidably attached in a posture parallel to the horizontal portion 3. The fitting portion 6 b is provided with a fixing screw 6 c for fixing the movable measure 6 to a predetermined position of the longitudinal portion 4 of the L-shaped ruler 2.

  The level 7 includes a horizontal bubble tube 7a that is horizontally oriented with respect to the horizontal portion 3 of the L-shaped ruler 2, a vertical bubble tube 7b that is perpendicular to the horizontal portion 3 of the L-shaped ruler 2, and an L-shaped ruler. 45 degrees bubble tube 7c of the angle of 45 degrees with respect to 2 horizontal scale parts 3 is provided. This level 7 is arranged between the support stay 5 and the horizontal part 3 of the L-shaped ruler 2, and is fixed to the outer edge of the horizontal part 3 by a fixing screw 5a so as to be detachable.

  Hereinafter, centering of the piping member A at the 45 degree position and the 90 degree position using the centering tool 1 of the present embodiment will be described with reference to FIGS.

The centering at the 45 degree position is performed according to the following procedure (see FIG. 4).
1) Loosen the fixing screw 6c and slide the movable measure 6 in the opening direction so that the distance between the horizontal measure 3 of the L-shaped ruler 2 and the movable measure 6 is larger than the outer diameter of the piping member A.
2) Press the inner edges of the horizontal portion 3 and the vertical portion 4 of the L-shaped ruler 2 against the outer surface of the piping member A.
3) The movable measure 6 is slid in the closing direction, and the piping member A is sandwiched between the horizontal measure 3 and the movable measure 6 of the L-shaped ruler 2.
4) Tighten the fixing screw 6c to fix the movable measure 6 to the longitudinal portion 4 of the L-shaped ruler 2 at that position.
5) The centering device 1 is rotated along the outer surface of the piping member A while confirming the 45 degree bubble tube 7c of the level 7 and the centering device 1 is held at an inclination of 45 degrees.
6) The outer diameter of the piping member A is read from the scale 4a of the longitudinal part 4 of the L-shaped ruler 2 pointed to by the fixed position of the movable ruler 6, and the centering position is determined from the outer diameter value.
7) Scratch the outer surface of the piping member A with a scribing needle or the like at any centering position of the scales 3a, 4a, 6a.

The centering at the 90 degree position is as follows (see FIG. 5).
1) The same as the steps 1) to 4).
2) The centering device 1 is rotated along the outer surface of the piping member A while checking the horizontal bubble tube 7a of the level 7, and the centering device 1 is held vertically.
3) Same as the steps 6) and 7).

  When, for example, the floor surface F exists immediately below the piping member A, the vertical portion 4 of the L-shaped ruler 2 may contact the floor surface F and cannot be centered by the above method. In that case, the centering device 1 is rotated along the outer surface of the piping member A while checking the vertical bubble tube 7b of the level 7 and the centering device 1 is held sideways (see FIG. 6). As a result, the longitudinal portion 4 of the L-shaped ruler 2 can be centered without interfering with the floor surface F and other obstacles.

  The technology of the present invention is used for centering an existing round member such as a steel pipe for water supply, a vinyl chloride pipe, or round steel, or an unfinished round member in a factory or the like.

DESCRIPTION OF SYMBOLS 1 Centering tool 2 L-shaped ruler 3 Horizontal part 3a Scale 4 Vertical part 4a Scale 5 Support stay 5a Fixing screw 6 Movable scale 6a Scale 6b Fitting part 6c Fixing screw 7 Level 7a Horizontal bubble tube 7b Vertical bubble tube 7c 45 degree bubble tube A Piping member (round member)
F Floor

Claims (3)

  A movable scale with a scale is slidably attached to the vertical scale part of the L-shaped ruler with a horizontal scale part and a vertical scale part at right angles to the horizontal part of the L-shaped ruler. On the other hand, a horizontal horizontal bubble tube, a vertical bubble tube perpendicular to the horizontal portion of the L-shaped ruler, and a 45-degree bubble tube oriented at an angle of 45 degrees with respect to the horizontal portion of the L-shaped ruler An instrument for centering a round member provided on the horizontal part of an L-shaped ruler.   The horizontal bubble tube, the vertical bubble tube, and the 45-degree bubble tube are integrated into a level, and a support stay and a fixing screw for detachably attaching the level are provided on the horizontal portion of the L-shaped ruler. Equipment for centering round members.   The round member centering device according to claim 1 or 2, further comprising a fixing screw for fixing the movable measure to a predetermined position of the vertical portion of the L-shaped ruler.

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