Tool positioning member, drilling tool and drilling method

Abstract

To provide a tool positioning member having a simple structure and capable of performing work from positioning to drilling efficiently, and a drilling tool and drilling method using the tool positioning member.SOLUTION: A drilling tool 10 is composed of a drilling tool body 11, a rotational shaft 13, a tool positioning member 1, a drilling blade 15, etc. The rotational shaft 13 is attached to the drilling tool body 11. The rotational shaft 13 is rotated by the drilling tool body 11. The tool positioning member 1 is attached to the rotational shaft 13. The tool positioning member 1 is provided with a mounting part 3 that is attached to the rotational shaft 13, and a reflection part 9 on an outside surface whose position can be identified by surveying means.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a tool positioning member that enables highly accurate and efficient drilling of holes at predetermined positions, for example at a construction site, and a drilling tool and a drilling method using the same. [Background technology]

[0002] Surveying instruments such as automatic tracking total stations are becoming more common at construction sites. The total station irradiates a laser beam in a predetermined direction and receives the light reflected by a reflector such as a prism, thereby enabling highly accurate three-dimensional position information of the reflector such as a prism. For this reason, by having various drawing data preloaded into the total station, the total station can irradiate a laser beam based on the loaded drawing data, receive the light reflected by the reflector, and accurately adjust the installation position of the reflector.

[0003] Conventionally, the position determined by an automatic tracking total station was marked, and the mark was used for subsequent processes such as drilling holes and attaching objects. Specifically, multiple steps were performed in stages, such as first determining the position for drilling holes, then marking the area, and then drilling holes at the marked positions, which was time-consuming. In particular, each step required standing and squatting, which put strain on the knees and lower back.

[0004] In response to this, a method has been devised in which a stamp is attached to the tip of a stick with a prism, allowing the user to position themselves while standing and then mark the relevant part of the ground (Non-Patent Document 1).

[0005] Also, various construction robots for marking out work at construction sites have been devised (Patent Document 1, Patent Document 2). [Prior art documents] [Non-patent literature]

[0006] [Non-Patent Document 1] Hilti Japan Co., Ltd. PLT300 Basic Manual 1.00 (Assembly: 6. Stamp Set) (https: / / www.eg.aktio.co.jp / wp-content / uploads / R1D_PLT300_torisetu2.pdf) [Patent documents]

[0007] [Patent Document 1] JP 2023-002535 A [Patent Document 2] JP 2022-049277 A Summary of the Invention [Problem to be solved by the invention]

[0008] However, even if a stamp or other mark is made at the determined position, there is a problem in that the mark can be rubbed off and worn away over time as workers walk over it, materials are carried, or the day's cleaning is carried out, making it necessary to re-apply the mark.

[0009] One possible solution to this problem is to mark the positioned locations with ink that does not easily fade. However, this would require additional work, which could lead to problems such as a decrease in overall efficiency.

[0010] In addition, the robots described in Patent Documents 1 and 2 are less flexible than humans and have a problem of being unable to respond flexibly to the situation on site. In addition, there is also the problem that the robot cannot move across the unevenness when the surface is relatively large, such as in the case of a steel deck for a deck slab. Furthermore, this type of robot is expensive and requires a specialized operator, which is a major factor preventing its widespread use in actual work sites.

[0011] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a tool positioning member that has a simple structure and is capable of efficiently performing operations from positioning to drilling, as well as a drilling tool and a drilling method using the same. [Means for solving the problem]

[0012] In order to achieve the above-mentioned object, the first invention is a positioning member that can be attached to a rotating shaft of a drilling tool, characterized in that it has an attachment portion that is attached to the rotating shaft of the drilling tool, and a reflective portion on its outer surface whose position can be identified by a surveying means.

[0013] The mounting portion may be a bearing capable of rotatably supporting the rotation shaft of the drilling tool in an insertion portion into which the rotation shaft of the drilling tool can be inserted.

[0014] A spirit level may be fixed to the top surface.

[0015] According to the first invention, by using a tool positioning member that can be attached directly to the tool, the position of the tool can be directly grasped by a surveying device. Therefore, there is no need to provide a mark on the hole-drilling portion, and the mark will not disappear. In addition, since the hole-drilling work can be performed directly on the portion after positioning, the positioning work and the temporary machining or main machining work can be performed simultaneously. Therefore, there is no need to perform positioning and marking, as in the conventional method, and then other workers do not need to move to each position to look for the mark.

[0016] Furthermore, if the attachment portion to the drilling tool is a bearing inside the insertion portion, the tool positioning member can be rotatably supported with respect to the rotation shaft of the drilling tool. Therefore, when the drilling tool is rotated, the tool positioning member does not immediately rotate with the rotation shaft, and sudden rotation torque can be prevented from being applied to the tool positioning member. Therefore, it is possible to prevent the tool positioning member from being damaged due to a load caused by a sudden centrifugal force.

[0017] In addition, by fixing a spirit level to the upper surface of the tool positioning member, it is possible to easily check whether the rotation axis of the tool is perpendicular to the hole-drilling portion when positioning or drilling the hole, which allows for positioning and drilling with higher positional accuracy.

[0018] A second invention is a hole-drilling tool having the tool positioning member according to the first invention attached thereto.

[0019] According to the second invention, for example, it can be applied to a conventional electric drill or the like and used as a hole-making tool.

[0020] The third invention is a drilling method using the drilling tool of the second invention, characterized in that a surveying device is used to irradiate a laser onto the reflective portion to measure its position, the drilling tool is placed at a predetermined position, and a hole is drilled at the identified position using the drilling tool.

[0021] According to the third invention, the work, which has conventionally been carried out in a plurality of steps, can be simplified and drilled efficiently. Effect of the Invention

[0022] According to the present invention, it is possible to provide a tool positioning member which has a simple structure and is capable of efficiently performing operations from positioning to drilling, as well as a drilling tool and a drilling method using the same. [Brief description of the drawings]

[0023] [Figure 1] FIG. [Diagram 2] 2 is a conceptual diagram showing a state in which the tool positioning member 1 is used. FIG. [Diagram 3] FIG. [Figure 4] 1A is a side view of the tool positioning member 1b, and FIG. 1B is a cross-sectional view taken along line AA in FIG. [Diagram 5] 4(a) to 4(c) are diagrams showing the state when applied to various types of drill bits. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] A preferred embodiment of the present invention will be described in detail below with reference to the drawings. Figure 1 shows a drilling tool 10. The drilling tool 10 is composed of a drilling tool body 11, a rotating shaft 13, a tool positioning member 1, a drilling blade 15, etc. A typical electric drill or the like can be used as the drilling tool body 11.

[0025] A rotating shaft 13 is removably attached to the drilling tool body 11. The rotating shaft 13 rotates by the drilling tool body 11. A drilling blade 15 is attached to the tip of the rotating shaft 13. The drilling blade 15 is, for example, a general twist drill bit. The drilling blade 15 is detachable from the rotating shaft 13, and the type and size of the drilling blade 15 can be changed.

[0026] A tool positioning member 1 is attached to the rotating shaft 13 of the drilling tool 10. The tool positioning member 1 is provided with an attachment part 3 for attachment to the rotating shaft 13, and a reflecting part 9 on its outer surface whose position can be identified by a surveying means described below. In the example shown, the tool positioning member 1 is a substantially cylindrical member having an insertion part 7 into which the rotating shaft 13 of the drilling tool 10 can be inserted. The insertion part 7 is a through hole into which the rotating shaft 13 is inserted and is fixed to a predetermined position of the rotating shaft 13 by the attachment part 3.

[0027] The tool positioning member 1 may be fixed integrally to the rotating shaft 13 at the attachment portion 3, or may be detachable from the rotating shaft 13. For example, the tool positioning member 1 may be fixed to the rotating shaft 13 by welding or screwing.

[0028] The reflecting portion 9 is, for example, a prism reflector. The reflecting portion 9 needs to have a certain size (thickness) relative to the rotation shaft 13 in order to irradiate and reflect the laser light from the surveying instrument. In addition, since the tool positioning member 1 rotates together with the rotation shaft 13, the tool positioning member 1 needs to be lightweight. For this reason, the tool positioning member 1 may be lightweight, for example, by making the inside thereof hollow except for the mounting portion 3.

[0029] FIG. 2 is a diagram showing a drilling method using a drilling tool 10 to which a tool positioning member 1 is attached. As described above, first, a surveying device 17 such as a total station is installed. A user of the drilling tool 10 places the tip of the drilling tool 10 (cutting blade 15) at a predetermined position on the ground, for example, and irradiates laser light from the surveying device 17 to the reflecting part 9 of the tool positioning member 1. The surveying device 17 receives the light reflected by the reflecting part 9 and measures the position of the tool positioning member 1 (cutting blade 15). The user adjusts the position of the cutting tool 10 while measuring the position of the tool positioning member 1, and places the drilling tool 10 in the desired position.

[0030] Once the drilling tool 10 has been placed at a preset position, the drilling tool 10 is driven at the specified position to perform drilling with the drilling blade 15. In this manner, drilling can be performed at the desired position.

[0031] In the illustrated example, the user can position the drilling tool 10 and perform drilling work while standing. For this reason, the rotation shaft 13 needs to have a certain length. In this case, it is desirable that the tool positioning member 1 is attached, for example, below the rotation shaft 13 (the side closer to the drilling blade 15). On the other hand, when the user works while crouching, the drilling blade 15 may be directly connected to the drilling tool body 11, and the tool positioning member 1 may be fixed to the axis (shank) of the drilling blade 15. In this case, a part of the drilling blade 15 becomes the rotation shaft 13.

[0032] As described above, according to this embodiment, the position of the drilling tool 10 can be accurately grasped and placed at a predetermined position by the tool positioning member 1, and after positioning is completed, the relevant portion can be directly drilled. Therefore, the work of stamping a portion to be drilled and then drilling the portion is simplified and made efficient.

[0033] Furthermore, since the mark does not disappear after positioning, as with a stamp or the like, there is no need to perform the task of repositioning.

[0034] Next, a second embodiment will be described. Fig. 3 is a cross-sectional view showing a tool positioning member 1a according to the second embodiment. In the following description, the same reference numerals as in Fig. 1 are used for configurations that exhibit the same functions as in the first embodiment, and duplicated descriptions will be omitted.

[0035] The tool positioning member 1a has a structure similar to that of the tool positioning member 1, but differs in that the attachment portion to the rotating shaft 13 is the bearings 5a, 5b. The bearings 5a, 5b are arranged in the insertion portion 7 into which the rotating shaft 13 of the drilling tool 10 can be inserted, and are capable of rotatably supporting the rotating shaft 13.

[0036] For example, a bearing 5a which is a thrust bearing is disposed between the rotating shaft 13 and the tool positioning member 1a below the tool positioning member 1a, and a bearing 5b which is a radial bearing can be used between the tool positioning member 1a and the outer circumferential surface of the rotating shaft 13. Note that as long as the tool positioning member 1a can be rotatably supported relative to the rotating shaft 13, the type and arrangement of the bearings are not limited to the example shown in the figure.

[0037] Using the tool positioning member 1a, drilling can be performed in the same manner as in the first embodiment. Furthermore, when the drilling tool 10 is operated to rotate the rotating shaft 13, the tool positioning member 1a does not immediately start rotating because of the inertia that tends to keep the tool positioning member 1a in place. This makes it possible to prevent a sudden load from being applied to the drilling tool body 11 and the tool positioning member 1a.

[0038] As time passes after the rotating shaft 13 starts to rotate, the tool positioning member 1a also gradually starts to rotate, and the rotation speed of the tool positioning member 1a gradually increases. However, as described above, the rotational axial force is transmitted to the tool positioning member 1a via the bearings 5a and 5b, so that it is possible to prevent a sudden rotational torque from being applied to the tool positioning member 1a.

[0039] In addition, since the drilling operation can be ended before the rotation speed of the tool positioning member 1a increases sufficiently, the tool positioning member 1a does not rotate at high speed. Even if the operation of the drilling tool 10 is stopped while the tool positioning member 1a is rotating, the tool positioning member 1a does not stop rotating suddenly but gradually. In this way, it is possible to prevent the tool positioning member 1a and the drilling tool body 11 from being damaged by a sudden load on the tool positioning member 1a.

[0040] In order to increase the inertia of the tool positioning member 1a, it is desirable that the inside of the tool positioning member 1a (the outside of the insertion portion 7) be solid and have a predetermined weight, for example.

[0041] According to the second embodiment, it is possible to obtain the same effects as those of the first embodiment. In addition, since the tool positioning member 1a is rotatable with respect to the rotating shaft 13, it is possible to prevent a sudden change in rotational force from being applied to the tool positioning member 1a when the rotating shaft 13 starts or stops rotating.

[0042] Next, a third embodiment will be described. Fig. 4(a) is a side view showing a tool positioning member 1b according to the third embodiment, and Fig. 4(b) is a cross-sectional view taken along line AA in Fig. 4(a).

[0043] The tool positioning member 1b has a structure substantially similar to that of the tool positioning member 1a, but differs in that a spirit level 19 is fixed to the upper surface. The spirit level 19 is capable of measuring the horizontal level of the upper surface of the tool positioning member 1b. In a side view, the upper surface of the tool positioning member 1b is formed perpendicular to the axial direction of the rotation shaft 13. Therefore, by using the spirit level 19 to orient the upper surface of the tool positioning member 1b horizontally, the rotation shaft 13 can be positioned so that it faces vertically.

[0044] According to the third embodiment, it is possible to obtain the same effects as those of the first embodiment. In addition, since the rotating shaft 13 can be arranged in the vertical direction, the position of the drilling tool 10 (the tip position of the drilling blade 15) can be adjusted with higher precision. In addition, during drilling, a hole can be formed that is vertical to the ground or the like.

[0045] In the above embodiment, the drilling blade 15 is a general twist drill, but the tool positioning members 1, 1a, and 1b can be applied to other drilling blades. For example, as shown in FIG. 5(a), the drilling blade 15a can be applied to a reamer. As shown in FIG. 5(b), the drilling blade 15b can be applied to a core drill. As shown in FIG. 5(c), the drilling blade 15c can be applied to a hole saw. In this case, a dust collecting cup 21 that can move in the axial direction may be fixed below the tool positioning member 1b.

[0046] Although the preferred embodiment of the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to such an example. It is clear that a person skilled in the art can come up with various modified or altered examples within the scope of the technical ideas disclosed in this application, and it is understood that such examples also naturally belong to the technical scope of the present invention. [Explanation of symbols]

[0047] 1, 1a, 1b...Tool positioning member 3. Mounting part 5a, 5b...Bearings 7. Insertion section 9……Reflector 10……Drilling tool 11...Drilling tool body 13...Rotation shaft 15, 15a, 15b, 15c...Drilling blade 17……Surveying equipment 19……Level 21...Dust collection cup

Claims

1. A positioning member that can be attached to a rotation shaft of a drilling tool, A mounting portion that is attached to a rotation shaft of a drilling tool; A reflecting portion on an outer surface, the position of which can be identified by a surveying means; A tool positioning member comprising:

2. 2. The tool positioning member according to claim 1, wherein the mounting portion is a bearing capable of rotatably supporting a rotation shaft of a drilling tool in an insertion portion into which the rotation shaft of the drilling tool can be inserted.

3. 3. The tool positioning member according to claim 2, further comprising a spirit level fixed to the upper surface thereof.

4. A drilling tool having the tool positioning member according to any one of claims 1 to 3 attached thereto.

5. A method for drilling a hole using the drilling tool of claim 4, comprising the steps of: Using a surveying device, a laser is irradiated onto the reflecting portion to measure the position, and the drilling tool is placed at a predetermined position; A method for drilling a hole, comprising the steps of: drilling a hole at a specified position using the drilling tool.

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