Positioning jig

Abstract

This enables measurements in situations where conventional jigs were difficult to use. [Solution] The first positioning jig of the present invention comprises a jig body, the jig body is provided with two or more positioning recesses that taper in the depth direction, and each positioning recess is configured to position the tip of the probe of a three-dimensional measuring machine to the tip of the positioning recess in the depth direction into which the tip is inserted. The second positioning jig of the present invention comprises a base portion and a protruding portion protruding from the base portion, the base portion is provided with a positioning recess that tapers in the depth direction, the positioning recess is configured to position the tip of the probe of a three-dimensional measuring machine to the tip of the positioning recess in the depth direction, and the protruding portion is configured to be inserted into a hole of the object to be measured.

Description

Technical Field

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[0001] The present invention relates to a positioning jig, and more particularly to a positioning jig used for positioning the tip of a probe for a three-dimensional measuring machine.

Background Art

[0002] Conventionally, as a device for acquiring the three-dimensional coordinates of a specific location of a measurement target, a three-dimensional coordinate measuring device (three-dimensional measuring machine) including a measuring machine main body and a probe is known (for example, Patent Document 1).

[0003] In a three-dimensional measuring machine, a detection signal from the tip of the probe is output to the measuring machine main body, and the measuring machine main body acquires the position of the tip of the probe at the time when the detection signal is input as three-dimensional coordinates based on a predetermined coordinate system based on the detection signal.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the measurement using the three-dimensional measuring machine, it is necessary to accurately place the tip of the probe on a predetermined measurement location of the measurement target. For this reason, a positioning jig having a conical depression for guiding the tip of the probe toward the measurement location may be used during measurement.

[0006] However, conventional positioning jigs may not be usable depending on the measurement environment, such as when there is an obstacle that inhibits communication between the measuring machine main body and the probe, or when there is not enough spatial margin to set the probe in a predetermined orientation.

[0007] This invention has been made in view of the above circumstances, and its objective is to provide a positioning jig that can perform measurements even in situations where measurement was difficult with conventional jigs. [Means for solving the problem]

[0008] The first positioning jig of the present invention comprises a jig body, the jig body is provided with two or more positioning recesses that taper in the depth direction, and each positioning recess is configured to position the tip of the probe of a three-dimensional measuring machine to the tip in the depth direction of the positioning recess into which the tip is inserted.

[0009] The second positioning jig of the present invention comprises a base portion and a protruding portion protruding from the base portion, wherein the base portion is provided with a positioning recess that tapers in the depth direction, and the positioning recess is configured to position the tip of the probe of the three-dimensional measuring machine at the tip of the positioning recess in the depth direction, and the protruding portion is configured to be inserted into a hole of the object to be measured. [Effects of the Invention]

[0010] The positioning jig of this invention is configured to be used in multiple ways, allowing it to be used in different ways depending on the measurement environment, and enabling measurements even in situations where measurement was previously difficult. [Brief explanation of the drawing]

[0011] [Figure 1] A perspective view showing an example of the positioning jig in use. [Figure 2] (a) is a perspective view showing an example of a positioning jig, and (b) is a perspective view of the positioning jig from a different angle. [Figure 3] (a) is an explanatory diagram of the positional relationship between the first positioning recess and the third positioning recess, and (b) is an explanatory diagram of the positional relationship between the second positioning recess and the third positioning recess. [Figure 4](a) is a front view of the positioning jig in Figure 2(a) and (b), (b) is a rear view of (a), (c) is a left side view of (a), (d) is a right side view of (a), (e) is a top view of (a), and (f) is a bottom view of (a). [Figure 5] (a) is a Va-Va section of Figure 4(a), (b) is a Vb-Vb section of Figure 4(a), (c) is a Vc-Vc section of Figure 4(c), and (d) is a Vd-Vd section of Figure 4(f). [Figure 6] (a) is an explanatory diagram illustrating an example of the use of the positioning jig in Figure 2(a) and (b), and (b) is an explanatory diagram illustrating another example of the use of the positioning jig in Figure 2(a) and (b). [Figure 7] (a) is a perspective view showing another example of the positioning jig of the present invention, and (b) is a perspective view of the positioning jig of (a) from a different angle. [Figure 8] (a) is an explanatory diagram illustrating an example of the use of the positioning jig in Figure 7(a)(b), and (b) is an explanatory diagram illustrating another example of the use of the positioning jig in Figure 7(a)(b). [Modes for carrying out the invention]

[0012] (Embodiment 1) A first embodiment of the positioning jig of the present invention will be described with reference to the drawings. The positioning jig 100 of this embodiment is used by being placed against the object to be measured (in this case, a steel girder X) as shown in Figure 1, and is used together with a three-dimensional measuring machine A that acquires the three-dimensional coordinates of a specific part of the object to be measured, as shown in Figures 6(a) and 6(b).

[0013] Three-dimensional measuring machine A is a device that acquires the three-dimensional coordinates of a specific location (measurement point) of a measurement target, and comprises a measuring machine body B and a probe C. The measuring machine body B is equipped with a receiving unit that receives detection signals transmitted from probe C and a coordinate acquisition unit that acquires three-dimensional coordinates based on a predetermined coordinate system. Probe C is equipped with a tip C1 that detects the specific position of the measurement target and a predefined reference plane on probe C.

[0014] With the probe C, a detection signal (for example, the signal when the tip C1 contacts the measurement target) is acquired, and the detection signal is output to the measuring machine main body B. In the measuring machine main body B, based on the detection signal, the position of the tip C1 of the probe C at the time when the detection signal is input is acquired as three-dimensional coordinates based on a predetermined coordinate system.

[0015] The positioning jig 100 of the present embodiment is mainly used together with such a three-dimensional measuring machine A. Hereinafter, the positioning jig 100 of the present embodiment will be described in detail.

[0016] As an example, the positioning jig 100 shown in FIGS. 2(a) and 2(b) includes a three-dimensional jig main body 10. The jig main body 10 has a plurality of surfaces (outer surfaces). On the back surface side of the jig main body 10, an application portion 11 to be applied to the measurement target is provided.

[0017] The application portion 11 of the present embodiment is a rectangular concave portion formed inside three application surfaces (a first application surface 11a, a second application surface 11b, and a third application surface 11c). The application portion 11 is provided on a surface different from the surface provided with the positioning concave portion 14 described later.

[0018] As shown in FIGS. 3(a) and 3(b), the application portion 11 is provided with a measurement location specifying portion 12 configured to specify the measurement location of the measurement target in a state where the application portion 11 is applied to the measurement target. In the present embodiment, the corner where the three surfaces of the first application surface 11a, the second application surface 11b, and the third application surface 11c intersect functions as the measurement location specifying portion 12. [[ID=HT=17]]

[0019] Among the three surfaces 11a to 11c forming the application portion 11, a magnet 13 (FIG. 2(b)) is provided on the second application surface 11b. When the measurement target has a magnetic force, by providing the magnet 13, the positioning jig 100 can be fixed to the measurement target by magnetic force, and displacement of the positioning jig 100 can be prevented.

[0020] As shown in Figure 2(a), positioning recesses 14 (first positioning recess 14a, second positioning recess 14b, and third positioning recess 14c) are provided on three different surfaces of the jig body 10, specifically on the first surface 10a, second surface 10b, and third surface 10c, which are mutually orthogonal or substantially orthogonal to each other.

[0021] Each positioning recess 14a to 14c is a cone-shaped recess (in this embodiment, a cone shape) that tapers in the depth direction. Each positioning recess 14a to 14c is provided such that the depth-direction tip 15 of each positioning recess 14a to 14c (first depth-direction tip 15a, second depth-direction tip 15b, third depth-direction tip 15c) tapers toward the measurement point identification section 12.

[0022] In other words, as shown in Figures 3(a) and 3(b), three virtual axes L (first virtual axis L1, second virtual axis L2, third virtual axis L3) passing through the opening midpoints 16 (first opening midpoint 16a, second opening midpoint 16b, third opening midpoint 16c), which are the centers of the openings of each positioning recess 14a to 14c, and the corresponding depth-direction tip portions 15a to 15c, are arranged to intersect at the measurement point identification section 12.

[0023] By arranging the three positioning recesses 14a to 14c in this positional relationship, the tip C1 of the probe C will always point to the measurement location identification part 12 regardless of which positioning recess 14a to 14c it is placed in. In other words, the tip C1 will be positioned at the depth-direction tip 15a to 15c of any of the positioning recesses 14a to 14c.

[0024] In this embodiment, the depth-direction tip portions 15a to 15c of each positioning recess 14a to 14c do not penetrate, so strictly speaking, the tip portion C1 does not touch the measurement point of the object being measured. However, since each positioning recess 14a to 14c is positioned as close as possible to the measurement point identification portion 12 without penetrating, the accuracy is comparable to that of directly touching the measurement point of the object being measured.

[0025] The positioning jig 100 of this embodiment has the appearance shown in Figures 4(a) to 4(f) in terms of design. Figure 4(a) is a front view of the positioning jig 100 of this embodiment, (b) is a rear view of (a), (c) is a left side view of (a), (d) is a right side view of (a), (e) is a top view of (a), and (f) is a bottom view of (a).

[0026] Furthermore, Figure 5(a) is a cross-sectional view of Va-Va in Figure 4(a), (b) is a cross-sectional view of Vb-Vb in Figure 4(a), (c) is a cross-sectional view of Vc-Vc in Figure 4(c), and (d) is a cross-sectional view of Vd-Vd in Figure 4(f).

[0027] (Example of use of the positioning jig of this embodiment) Next, an example of how to use the positioning jig 100 of this embodiment will be described.

[0028] Figure 6(a) shows an example of obtaining the three-dimensional coordinates of the lower corner of the lower flange X1 of a steel girder X. In this example, the distance from the mounting surface (mounting surface) E on which the support frame D is installed to the lower flange X1 is short, and the probe C cannot fit between them. Therefore, the tip C1 cannot be placed in the second positioning recess 14b. However, by placing the tip C1 in the third positioning recess 14c, the tip C1 can be positioned at a predetermined measurement position, and the three-dimensional coordinates can be obtained.

[0029] Figure 6(b) shows an example of obtaining the three-dimensional coordinates of the upper surface corner of the lower flange X1 of a steel girder X. In this example, when the tip C1 is placed in the second positioning recess 14b, the web X2 is positioned between the probe C and the measuring instrument body B, making measurement impossible. However, by placing the tip C1 in the first positioning recess 14a, the web X2 is no longer positioned between the probe C and the measuring instrument body B, and the three-dimensional coordinates can be obtained.

[0030] Thus, in the positioning jig 100 of this embodiment, the positioning recess 14 into which the tip C1 of the probe C is inserted can be selected, making it possible to perform measurements even in situations where conventional measurements were difficult.

[0031] (Modified form of the positioning jig of this embodiment) The positioning jig 100 of this embodiment can be modified in various ways. For example, in this embodiment, one example is the case where three positioning recesses 14a to 14c are provided on different surfaces, but two or more positioning recesses 14 can also be provided on the same surface. In this case, the positioning recesses 14 provided on the same surface are provided at different angles such that the depth-direction tip 15 of each positioning recess 14 faces the measurement point identification part 12.

[0032] Furthermore, although this embodiment uses the case where there are three positioning recesses 14 as an example, the number of positioning recesses 14 can be two or four or more.

[0033] Furthermore, in this embodiment, the case where the contact portion 11 is a rectangular recess is given as an example, but the shape of the contact portion 11 can be designed according to the shape of the object to be measured, and may be other than rectangular or a recess.

[0034] (Embodiment 2) Next, a second embodiment of the positioning jig of the present invention will be described with reference to the drawings. The positioning jig 200 of this embodiment can be suitably used primarily when acquiring three-dimensional information of the center position of a hole.

[0035] As an example, the positioning jig 200 shown in Figures 7(a) and 7(b) comprises a base portion 20 and a protruding portion 21 extending from the base portion 20. A positioning recess 22 is provided on the upper surface of the base portion 20.

[0036] The positioning recess 22 is a conical (in this embodiment, conical) recess that tapers in the depth direction, similar to the positioning recess 14 in the above embodiment. The positioning recess 22 is configured such that its tip 23 in the depth direction is located at the radial center of the positioning jig 200. Therefore, the tip C1 of the probe C placed in the positioning recess 22 is positioned at the radial center of the positioning jig 200.

[0037] The protruding portion 21 is the part that is inserted into the hole to be measured. The protruding portion 21 shown in the figure is cylindrical. In addition to being cylindrical, the protruding portion 21 can also have a polygonal cross-section or other shapes. Furthermore, there are no restrictions on the size of the protruding portion 21, and several types can be prepared according to the diameter of the hole to be measured. In this embodiment, the inside of the protruding portion 21 is a bottomed recess without a tapered surface, but the inside of the protruding portion 21 can also be conical, similar to the positioning recess 22.

[0038] The positioning jig 200 of this embodiment can be equipped with a magnet similar to that of the positioning jig 100 of the previous embodiment.

[0039] The positioning jig 200 of this embodiment can be used by inserting it into the hole from the top side of the object to be measured, as shown in Figure 8(a), or by inserting it into the hole from the bottom side of the object to be measured, as shown in Figure 8(b).

[0040] The positioning jig 200 of this embodiment is configured so that the protruding portion 21 can be inserted from either the top or bottom side, allowing it to be used interchangeably depending on the measurement environment. Similar to the positioning jig 100 of the previous embodiment, it enables measurement even in situations where conventional measurement was difficult.

[0041] It should be noted that the above embodiments and modifications are merely examples, and the positioning jig of the present invention is not limited to the configurations of the above embodiments and modifications. Each configuration of the above embodiments and modifications can be appropriately modified, such as by replacing, omitting, or adding components, to the extent that the intended purpose can be achieved.

[0042] Furthermore, the embodiments and modifications described above are not intended to limit the technical scope of the present invention. The technical scope of the present invention is defined based on the claims. The technical scope of the present invention also includes equivalents to the claims. [Industrial applicability]

[0043] The positioning jig of this invention can be used in conjunction with a three-dimensional measuring machine that acquires the three-dimensional coordinates of a specific location to be measured, and is particularly suitable for measuring the three-dimensional coordinates of various bridge members (for example, the corners and nodal point positions of the main girder flanges). [Explanation of Symbols]

[0044] 10. Jig body 10a Front page 10b Second side 10c Third side 11 Address section 11a First facing surface 11b Second facing surface 11c Third facing surface 12. Measurement location identification section 13 Magnets 14 Positioning recess 14a First positioning recess 14b Second positioning recess 14c Third positioning recess 15 Depth-direction tip 15a First depth-direction tip 15b Second depth-direction tip 15c Third depth-direction tip 16 Midpoint of the opening 16a Midpoint of first opening 16b Second opening midpoint 16c Third opening midpoint 20 Base section 21 Protruding section 22 Positioning recess 23 Depth-direction tip 100 Positioning jigs 200 Positioning fixtures A Three-dimensional measuring machine B Measuring instrument body C probe C1 Tip D-frame E. Installation surface (mounting surface for the frame) L virtual axis L1 First virtual axis L2 Second virtual axis L3 Third virtual axis X Steel girder X1 Lower flange X2 Web

Claims

1. Equipped with a jig body, The jig body is provided with two or more positioning recesses that taper in the depth direction, The two or more positioning recesses are provided on different surfaces of the jig body, Each of the positioning recesses is configured to position the tip of the probe of the three-dimensional measuring machine at the tip in the depth direction of the positioning recess into which the tip is inserted. Each of the positioning recesses is configured such that, when placed against the object to be measured, the leading edge of each positioning recess in the depth direction faces a common point of the object to be measured. Positioning jig.

2. Equipped with a jig body, The jig body is provided with two or more positioning recesses that taper in the depth direction, The two or more positioning recesses are provided on different surfaces of the jig body, Each of the positioning recesses is configured to position the tip of the probe of the three-dimensional measuring machine at the tip in the depth direction of the positioning recess into which the tip is inserted. The jig body is equipped with a contact portion that is applied to the object to be measured, The aforementioned mounting portion is provided on a surface different from the surface on which the positioning recess of the jig body is provided. The aforementioned addressing unit includes a measurement location identification unit configured to identify the measurement location of the measurement target when it is applied to the measurement target, Each of the positioning recesses is provided such that the leading edge of each positioning recess in the depth direction faces the measurement location identification section. Positioning jig.

3. Equipped with a jig body, The jig body is provided with two or more positioning recesses that taper in the depth direction, The two or more positioning recesses are provided on different surfaces of the jig body, Each of the positioning recesses is configured to position the tip of the probe of the three-dimensional measuring machine at the tip in the depth direction of the positioning recess into which the tip is inserted. Each of the positioning recesses is provided such that, when positioned against the object to be measured, the midpoint of the opening of each positioning recess and the virtual axis passing through the leading edge in the depth direction of each positioning recess intersect at a common point. Positioning jig.

4. Equipped with a jig body, The jig body is provided with two or more positioning recesses that taper in the depth direction, The two or more positioning recesses are provided on different surfaces of the jig body, Each of the positioning recesses is configured to position the tip of the probe of the three-dimensional measuring machine at the tip in the depth direction of the positioning recess into which the tip is inserted. The jig body is equipped with a contact portion that is applied to the object to be measured, The aforementioned mounting portion is provided on a surface different from the surface on which the positioning recess of the jig body is provided. The aforementioned addressing unit includes a measurement location identification unit configured to identify the measurement location of the measurement target when it is applied to the measurement target, Each of the positioning recesses is provided such that the opening midpoint, which is the center of the opening of each positioning recess, and the virtual axis passing through the depth-direction tip of each positioning recess intersect at the measurement point identification section. Positioning jig.

5. The jig body is equipped with a magnet configured to be fixed to the object to be measured by magnetic force. A positioning jig according to any one of claims 1 to 4.

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