JP2015129650A - Jig for making marking and marking method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily make marking such as a mark off line.SOLUTION: A jig for making marking for marking to an object surface comprises: two sphere reflectors for reflecting a laser beam ejected from a three-dimensional laser measuring instrument; a base part abutted to the object surface, and having two attaching parts where sphere reflectors are attached and a punch insertion hole disposed at a center between the attaching parts; and a punch which can be inserted in a punch insertion hole.

Description

  The present invention relates to a marking creation jig and a marking method.

  2. Description of the Related Art Conventionally, in a steam generator or the like of a nuclear power plant, extremely high positioning accuracy is required for parts constituting the device in order to increase the safety of the device. Such high-accuracy positioning is generally performed using a three-dimensional laser measuring instrument.

JP 2010-117211 A

  If it is a three-dimensional laser measuring instrument, the position from a three-dimensional laser measuring instrument to components can be measured with high precision. However, the coordinates of the three-dimensional laser measuring instrument in the global coordinate system are set artificially. For this reason, for example, if the operator makes a mistake in the initial setting such as the coordinate setting of the three-dimensional laser measuring instrument, then there is a risk that all the components will be installed at positions shifted from the original positions.

  In order to avoid such a fear, it is desirable to create a marking such as a ruled line inside the device, and to check the distance from the ruled line to the part with a scale or the like. In order to work with such a ruled line, it is necessary to create a ruled line accurately first, but at present, it is easy to create a ruled line that can satisfy the above extremely high positioning accuracy. A method that can be created is not proposed.

  The present invention has been made in view of the above-described problems, and an object thereof is to enable easy creation of markings such as ruled lines.

  The present invention adopts the following configuration as means for solving the above-described problems.

  A first invention is a marking creation jig that performs marking on a target surface, and includes two sphere reflectors that reflect laser light emitted from a three-dimensional laser measuring instrument, and the sphere reflector is attached to the two sphere reflectors. A structure having a mounting portion and a punch insertion hole provided in the center between the mounting portions, a base portion that is in contact with the target surface, and a punch that can be inserted into the punch insertion hole. Is adopted.

  According to a second aspect of the present invention, in the first aspect of the present invention, the mounting portion is formed of a concave portion that is exposed on the surface of the base portion and the edge portion is in contact with the surface of the spherical reflector.

  According to a third aspect of the present invention, in the first or second aspect of the invention, a sphere reflector attracting magnet is provided that is embedded in the pedestal portion and attracts the sphere reflector attached to the attachment portion in a non-contact manner. Is adopted.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the base portion is embedded on the contact surface side with the target surface, and the contact surface is in contact with the target surface. A configuration is adopted in which a target surface attracting magnet that attracts the target surface in a non-contact manner is provided.

  5th invention employ | adopts the structure that the said attachment part is further provided in the formation location of the said punch insertion hole in any one of the said 1st-4th invention.

  6th invention is a marking method which performs marking on a target surface, and measures the position of the jig for making markings according to any one of the first to fifth inventions with a three-dimensional laser measuring instrument. A configuration is adopted in which the marking creation jig is aligned based on the measurement result of the three-dimensional laser measuring instrument, and the target surface is marked by the aligned punch of the marking creation jig.

  According to the present invention, since the two spherical reflectors are provided, the center coordinates of these spherical reflectors can be accurately obtained by the three-dimensional laser measuring instrument. Further, since the height of the base portion having the attachment portion to which these spherical reflectors are attached and the distance between the attachment portions are known, the position of the punch insertion hole provided in the center between the attachment portions and the punch insertion The tip position of the punch inserted through the hole can also be easily calculated from the center positions of the two spherical reflectors. Therefore, according to the present invention, marking can be performed by accurately forming a concave portion with a punch on the target surface. For example, an accurate ruled line can be created based on this marking. Therefore, according to the present invention, it is possible to easily create markings such as ruled lines.

(A) is a perspective view of the jig | tool for marking creation of one Embodiment of this invention, (b) is a disassembled perspective view of the jig | tool for marking creation of one Embodiment of this invention. It is a longitudinal cross-sectional view of the jig for marking creation of one Embodiment of this invention.

  Hereinafter, an embodiment of a marking creation jig and a marking method according to the present invention will be described with reference to the drawings. In the following drawings, the scale of each member is appropriately changed in order to make each member a recognizable size.

  FIG. 1A is a perspective view of the marking creation jig 1 of the present embodiment. FIG. 1B is an exploded perspective view of the marking creation jig 1 of this embodiment. FIG. 2 is a longitudinal sectional view of the marking creation jig 1 of the present embodiment.

  As shown in these drawings, the marking creation jig 1 of this embodiment includes a base 2, an upper surface side magnet unit 3, a lower surface side magnet unit 4, a screw 5, a spherical reflector 6, and a punch 7. And.

  The base part 2 is a rectangular parallelepiped block member, and is formed of, for example, stainless steel. On the side of the upper surface 2 a of the base part 2, three attachment parts 2 b are provided so as to be exposed on the surface of the base part 2. These attachment portions 2b are portions for attaching the spherical reflector 6 and are circular recesses. These attachment portions 2b have a smaller diameter than the spherical reflector 6 when viewed from above, and the edge portion 2b1 (the upper edge) contacts the surface of the spherical reflector 6 over the entire circumference, so that the spherical reflector 6 Positioning and supporting. Moreover, the vertical cross-sectional shape of the attachment part 2b is set so that parts other than the edge part 2b1 may not contact the spherical reflector 6 to support.

  These three attachment portions 2b are linearly arranged in the longitudinal direction of the base portion 2, and when performing marking, the spherical reflector 6 is attached to at least the attachment portions 2b at both ends. The mounting portion 2b disposed in the center is provided at the center between the mounting portions 2b at both ends, which are formation positions of punch insertion holes 2c described later. For example, the position and orientation of the base portion 2 can be more accurately tertiary. This is where the third spherical reflector 6 is installed when it is necessary to measure with the original laser measuring instrument.

  Moreover, the base part 2 is provided with the punch insertion hole 2c. The punch insertion hole 2c is arranged concentrically with the central attachment portion 2b from above, and is thereby provided in the center between the attachment portions 2b at both ends. The punch insertion hole 2c is a circular through hole penetrating the base portion 2 in the vertical direction, and has a slightly larger diameter than the punch 7 so that the punch 7 can be inserted.

  The lower surface 2d of the pedestal 2 is a region that is in direct contact with the target surface X to be marked by the punch 7, and is a processed surface that has been flattened so that the flatness is high. Such a lower surface 2d is the same surface except for a region where a lower surface side accommodating portion 2f described later is formed.

  Furthermore, the base part 2 is provided with the upper surface side accommodating part 2e and the lower surface side accommodating part 2f. The upper surface side accommodating part 2e is an accommodating part provided on the upper surface 2a side of the base part 2, and is a concave part dug down from the bottom of each mounting part 2b. These upper surface side accommodating portions 2e are arranged concentrically with the attachment portion 2b when viewed from above, and have a circular shape having a smaller diameter than the attachment portion 2b. The upper surface side magnet unit 3 is accommodated in the upper surface side accommodating portion 2e. The lower surface side accommodating portion 2f is an accommodating portion provided on the lower surface 2d side of the base portion 2, and is a concave portion dug upward from the lower surface 2d. These lower surface side accommodating portions 2f are formed in the same circular shape as the upper surface side accommodating portion 2e when viewed from below, and are provided so as to overlap the upper surface side accommodating portion 2e. The lower surface side magnet unit 4 is accommodated in the lower surface side accommodating portion 2f.

  The upper surface side magnet unit 3 includes a base portion 3a and a spherical reflector attracting magnet 3b. The base portion 3a is an annular member whose outer diameter is slightly smaller than the upper surface side accommodating portion 2e. Further, as shown in FIG. 2, a groove portion in which the tip of the screw 5 is locked is formed on the side surface of the base portion 3a. The height of the base portion 3a (the thickness in the vertical direction in FIG. 2) is set slightly smaller than the depth of the upper surface side accommodating portion 2e. For this reason, when the upper surface side magnet unit 3 is accommodated in the upper surface side accommodating portion 2e, the upper surface of the base portion 3a is positioned slightly below the bottom surface of the mounting portion 2b. The spherical reflector attracting magnet 3b is an annular magnet which is fixed so as to be embedded in the upper surface side of the base portion 3a, and whose upper surface is flush with the upper surface of the base portion 3a.

  The upper surface side magnet unit 3 is attached so as to be embedded in the base portion 2 by being accommodated in the upper surface side accommodating portion 2e. The upper surface side magnet unit 3 is fixed to the base portion 2 with screws 5. In the upper surface side magnet unit 3, the upper surface of the spherical reflector attracting magnet 3b (that is, the upper surface of the base portion 3a) is not in contact with the spherical reflector 6, and the spherical reflector 6 attached to the attachment portion 2b is not in contact with the upper surface side magnet unit 3. Adsorbs on contact.

  The lower surface side magnet unit 4 includes a base portion 4a and a target surface attracting magnet 4b. The base portion 4a is an annular member whose outer diameter is slightly smaller than the lower surface side accommodating portion 2f. Further, as shown in FIG. 2, a groove portion in which the tip of the screw 5 is locked is formed on the side surface of the base portion 4a. The height of the base portion 4a (the thickness in the vertical direction in FIG. 2) is slightly smaller than the depth of the lower surface side accommodating portion 2f. For this reason, when the lower surface side magnet unit 4 is accommodated in the lower surface side accommodating portion 2f so that the upper surface comes into contact with the bottom portion of the lower surface side accommodating portion 2f, the lower surface becomes the lower surface of the base portion 4a. It will be located slightly above 2d. The target surface attracting magnet 4b is an annular magnet which is fixed so as to be embedded in the lower surface side of the base portion 4a, and whose lower surface is flush with the lower surface of the base portion 4a.

  The lower surface side magnet unit 4 is attached to be embedded in the base portion 2 by being accommodated in the lower surface side accommodating portion 2f. The lower surface side magnet unit 4 is fixed to the base portion 2 with screws 5. In such a lower surface side magnet unit 4, the lower surface of the target surface attracting magnet 4 b (that is, the lower surface of the base portion 4 a) is not in contact with the target surface X with which the lower surface 2 d of the base portion 2 abuts. In a state where the target surface X is in contact with the target surface X, the target surface X is adsorbed in a non-contact manner.

  The screw 5 is screwed through the base portion 2 from the side, and the tip is inserted into a groove formed on the base portion 3a of the upper surface side magnet unit 3 or the side surface of the lower surface side magnet unit 4. . Thus, the top end of the upper surface side magnet unit 3 and the lower surface side magnet unit 4 are positioned by inserting the tip of the screw 5 into the groove portion formed on the side surface of the base portion 3a of the upper surface side magnet unit 3 or the lower surface side magnet unit 4. And fixed.

  The spherical reflector 6 reflects the laser beam emitted from the three-dimensional laser measuring instrument, and when marking the target surface X with the punch 7, attachments arranged at both ends of the three attachment parts 2 b. It is attached to the part 2b. In the following description, for the sake of convenience, the spherical reflector 6 disposed on the left side in FIG. 2 is referred to as a first spherical reflector 6a, and the spherical reflector 6 disposed on the right side in FIG. 2 is referred to as a second spherical reflector 6b. For example, when it is necessary to measure the posture and position of the marking creation jig 1 according to the present embodiment with higher accuracy, the punch 7 is removed, and 3 (not shown) is attached to the central attachment portion 2b. A third spherical reflector 6 is installed. These spherical reflectors 6 are made of a magnetic material and can be attracted by the spherical reflector attracting magnet 3b.

  The punch 7 is inserted into a punch insertion hole 2c provided at the center between the mounting portions 2b arranged on both sides, and a head having a larger diameter than the punch insertion hole 2c is struck by a hammer or the like. The target surface X is marked with a sharp tip.

  When forming a marking (punch hole) using the marking creation jig 1 of this embodiment having such a configuration, first, the spherical reflector 6 is attached to the attachment portion 2 b of the base portion 2. Here, the spherical reflector 6 is attached to the attachment portions 2b at both ends of the three attachment portions 2b. That is, the first sphere reflector 6a and the second sphere reflector 6b are attached. Thus, the 1st spherical reflector 6a and the 2nd spherical reflector 6b attached to the attaching part 2b are supported by the edge part 2b1 of the attaching part 2b, and are fixed by being adsorbed by the non-contact spherical reflector attracting magnet 3b. ing.

  Subsequently, the base 2 to which the first sphere reflector 6a and the second sphere reflector 6b are attached in this way is attached to the target surface X. Here, the lower surface 2d of the base 2 is brought into contact with the target surface X. As a result, the target surface attracting magnet 4b attracts the target surface X in a non-contact manner, and the base 2 is fixed to the target surface X. The first sphere reflector 6a and the second sphere reflector 6b may be attached to the attachment portion 2b after the base portion 2 is attached to the target surface X first.

  Subsequently, coordinates on the target surface X with which the tip of the punch 7 abuts are obtained by a three-dimensional laser measuring instrument (not shown). The three-dimensional laser measuring instrument emits a laser beam directed to the first sphere reflector 6a and the second sphere reflector 6b with the center coordinates of the first sphere reflector 6a and the center coordinates of the second sphere reflector 6b, Obtained from the reflected light. Further, the three-dimensional laser measuring instrument (or a computer connected to the three-dimensional laser measuring instrument) inserts a punch on the target plane X from the center coordinates of the first sphere reflector 6a and the center coordinates of the second sphere reflector 6b. The center coordinates of the hole 2c (that is, the coordinates on the target surface X with which the tip of the punch 7 comes into contact) are calculated.

  Here, when the calculated center coordinate of the punch insertion hole 2c on the target surface X is different from a predetermined marking formation position, the operator performs the present operation based on the calculation result (measurement result). The positioning of the marking creation jig 1 in the form is performed. When the calculated center coordinate of the punch insertion hole 2c on the target surface X coincides with a predetermined marking formation position, the operator inserts the punch 7 into the punch insertion hole 2c, and the head of the punch 7 is inserted. A punch hole is created by hitting the part with a hammer or the like. It is also possible to form a ruled line by creating a plurality of such punch holes and creating a straight line passing through these punch holes.

  According to the marking creation jig 1 and the marking method of the present embodiment as described above, since the two spherical reflectors 6 are provided, the center coordinates of these spherical reflectors 6 are accurately determined by the three-dimensional laser measuring instrument. Can be sought. Furthermore, since the height of the base part 2 having the attachment part 2b to which these spherical reflectors 6 are attached and the distance between the attachment parts 2b are known, the punch insertion hole 2c provided at the center between the attachment parts 2b. And the tip position of the punch 7 inserted through the punch insertion hole 2 c can be easily calculated from the center positions of the two spherical reflectors 6. Therefore, according to the marking creation jig 1 of the present embodiment, marking can be performed by accurately forming a recess with the punch 7 on the target surface. For example, an accurate ruled line based on this marking Can be created. Therefore, according to the marking creation jig 1 of the present embodiment, it is possible to easily create markings such as ruled lines.

  Further, in the marking creation jig 1 of the present embodiment, the attachment portion 2 b is formed of a concave portion that is exposed on the surface of the base portion 2 and the edge portion 2 b 1 is in contact with the surface of the spherical reflector 6. For this reason, when the spherical reflector 6 is attached, the spherical reflector 6 can be accurately and easily positioned only by placing the spherical reflector 6 in the recess that is the attachment portion 2b.

  In addition, the marking creation jig 1 of the present embodiment includes a spherical reflector attracting magnet 3b that is embedded in the base 2 and attracts the spherical reflector 6 attached to the mounting portion 2b in a non-contact manner. For this reason, it is possible to accurately position the sphere reflector 6 by preventing the sphere reflector attracting magnet 3b from interfering with the sphere reflector 6, and it is possible to securely fix the sphere reflector 6. .

  Further, in the marking creation jig 1 of the present embodiment, the contact surface is in contact with the target surface X while being embedded in the contact surface (ie, the lower surface 2d) side with the target surface X of the base 2. The target surface attracting magnet 4b for attracting the target surface X in a non-contact manner is provided. For this reason, it is possible to accurately position the pedestal 2 by preventing the target surface attracting magnet 4b from interfering with the target surface X, and to securely fix the pedestal 2 to the target surface X. Is possible.

  Further, in the marking creation jig 1 of the present embodiment, a mounting portion 2b is further provided at a place where the punch insertion hole 2c is formed. Therefore, the third spherical reflector 6 can be installed, and the posture and position of the marking creation jig 1 can be obtained more accurately by the three-dimensional laser measuring instrument.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the said embodiment. Various shapes, combinations, and the like of the constituent members shown in the above-described embodiments are examples, and various modifications can be made based on design requirements and the like without departing from the spirit of the present invention.

  For example, the marking creation jig 1 of the present embodiment can be used not only when the steam generator of a nuclear power plant is being constructed, but also when marking is performed on other equipment.

  Moreover, in the said embodiment, the structure where the lower surface 2d of the base part 2 was a plane was demonstrated. However, when the target surface X has a shape that is not a flat surface such as a curved surface, the lower surface 2d may be deformed according to the shape of the target surface.

  DESCRIPTION OF SYMBOLS 1 ... Marking preparation jig, 2 ... Base part, 2a ... Upper surface, 2b ... Mounting part, 2b1 ... Edge part, 2c ... Punch insertion hole, 2d ... Lower surface, 2e ... Upper surface side accommodation , 2f ...... Lower surface side accommodating portion, 3 ... Upper surface side magnet unit, 3a ...... Base portion, 3b .... Spherical reflector attracting magnet, 4 ... Lower surface side magnet unit, 4a ... Base portion, 4b ... Target Surface attracting magnet, 5 ... Screw, 6 ... Spherical reflector, 6a ... First spherical reflector, 6b ... Second spherical reflector, 7 ... Punch, X ... Target surface

Claims (6)

A marking creation jig that performs marking on a target surface,
Two spherical reflectors that reflect the laser light emitted from the three-dimensional laser measuring instrument;
A base part that has two attachment parts to which the spherical reflector is attached and a punch insertion hole provided in the center between the attachment parts and is in contact with the target surface;
A marking creation jig, comprising: a punch that can be inserted into the punch insertion hole.   The marking making jig according to claim 1, wherein the attachment portion includes a concave portion that is exposed on a surface of the base portion and an edge portion is in contact with the surface of the spherical reflector.   3. The marking making jig according to claim 1, further comprising a spherical reflector attracting magnet that is embedded in the base portion and attracts the spherical reflector attached to the attachment portion in a non-contact manner.   And a target surface attracting magnet that is embedded in a contact surface side of the base portion with the target surface and that attracts the target surface in a non-contact manner in a state where the contact surface is in contact with the target surface. The marking creation jig according to any one of claims 1 to 3, wherein the jig is a marking creation jig.   The marking creation jig according to any one of claims 1 to 4, wherein the attachment portion is further provided at a position where the punch insertion hole is formed. A marking method for marking a target surface,
The position of the marking preparation jig according to any one of claims 1 to 5 is measured with a three-dimensional laser measuring instrument, and the marking preparation jig is aligned based on the measurement result of the three-dimensional laser measuring instrument. The marking method is characterized in that the target surface is marked with a punch of the aligned marking creation jig.

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