JP2013244608A - Drill positioning appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drill positioning appliance capable of accurately drilling a lower hole, which is inclined by a predetermined angle with respect to the surface of a workpiece, by a drill and further capable of being simply attached to the workpiece.SOLUTION: A drill positioning appliance 1 respectively has a box body 2 having an opposed surface 20 coming into contact with a workpiece to provide an opening to the opposed surface 20 and a pipe 30 for guiding the drill 8 attached to an electromotive tool to the workpiece having to be drilled by the drill 8 at a predetermined angle to be equipped with a plurality of kinds of guide members 3 mutually different in a guide angle to the workpiece of the drill 8 by the pipe 30. The box body 2 is provided with a suction port 22 to which a suction device 6 for sucking dust at the time of drilling is attached and a guide member holding part 4 to which one of a plurality of the guide members 3 is selectively attached. The suction port 22 and the opening of the opposed surface 20 communicate with each other through the internal space of the box body 2 and, in a state that the opposed surface 20 comes into contact with the workpiece to close the opening, air is sucked to bring an internal space of the box body 2 to a negative pressure.

Description

  The present invention relates to a positioning device for guiding a drill for drilling a workpiece such as metal, stone, cement, wood, and composite material at a predetermined angle with respect to the workpiece.

  When performing an operation of making a pilot hole in a workpiece such as metal, stone, cement, wood, or composite material, a guide mechanism for guiding drill drilling may be used. The applicant has previously proposed a drilling device provided with a guide mechanism shown in Patent Document 1. The drill of the drill apparatus is guided by the guide mechanism to drill a pilot hole perpendicular to the surface of the workpiece. For example, an anchor is inserted into the prepared hole drilled by the drill.

JP 2001-96525 A

There is a case where it is desired to make a pilot hole inclined by a predetermined angle with respect to the surface of the workpiece. That is, it may be necessary to push the drill at a predetermined angle with respect to the surface of the workpiece. In order to open such a tilted pilot hole with a drill device provided with a guide mechanism shown in Patent Document 1, an operator needs to tilt and hold the drill device. However, since hand shake occurs in the operator holding the drill device, it is difficult to push the drill accurately while being tilted by a predetermined angle with respect to the surface of the workpiece.
Moreover, since it is necessary for an operator to hold | maintain the guide mechanism or the whole drill apparatus by hand, it is inconvenient for an operator.
An object of the present invention is to provide a drill positioning machine capable of accurately drilling a pilot hole inclined at a predetermined angle with respect to the surface of the workpiece with a drill and easily attaching the prepared hole to the workpiece. Is to provide.

A drill positioning machine has a facing surface that faces and faces a workpiece, and a box body that has an opening on the facing surface;
A plurality of types of guides each having a pipe for guiding a drill attached to the power tool to a workpiece to be drilled by the drill at a predetermined angle, the guide angles of the drill to the workpiece being different from each other. With members,
The box is provided with a suction port to which a suction device for sucking dust at the time of drilling is attached, and a guide member holding portion to which one of the plurality of types of guide members is selectively attached,
The suction port and the opening of the facing surface communicate with each other through an internal space of the box, and the air flows from the suction port in a state where the facing surface is in contact with the workpiece and the opening is blocked by the workpiece. Is sucked to make the internal space of the box negative.

The drill is guided to the workpiece at a predetermined angle with respect to the pipe in a state where the opposing surface of the box to which the arbitrary one guide member is attached is in contact with the workpiece. Thereby, a pilot hole inclined by a predetermined angle with respect to the surface of the workpiece can be accurately drilled with a drill.
Further, a plurality of types of guide members are prepared, and the guide angle to the workpiece of the drill by the pipe is different for each guide member. The operator selects a guide member having a pipe inclined at a desired angle with respect to the workpiece, attaches the guide member to the guide member holding portion of the box, and inserts a drill into the pipe so that the surface of the workpiece is Can be accurately drilled with a drill.
Further, if air is sucked from the suction port in a state where the opposing surface of the box is in contact with the workpiece and the opening is blocked by the workpiece, the internal space of the box becomes negative pressure. That is, the box and the guide member are attached to the workpiece without being held by the operator, and at the same time, the dust at the time of drilling is sucked from the suction port. Thereby, the worker can easily attach the box to the workpiece.

It is sectional drawing which decomposed | disassembled the positioning tool for drills. It is sectional drawing which shows the assembly state of the positioning tool for drills. It is a front view of a box. (a)-(c) is a figure which shows the procedure which attaches a guide member to a box. It is a figure which shows two types of guide members. (a), (b) is a figure which shows the process of making a pilot hole perpendicular | vertical to a wall surface.

Hereinafter, a drill positioning device according to an embodiment of the present invention will be described with reference to the drawings. In addition, the “drill” in this specification is a concept including a core drill that cuts the center of a hole. Further, the chip generated in the drilling operation is a concept including a chip mixed with a cutting fluid in wet cutting.
FIG. 1 is an exploded cross-sectional view of the drill positioning device 1, and FIG. 2 is a cross-sectional view showing an assembled state of the drill positioning device 1. The drill positioning device 1 includes a flat box 2 formed of an elastic member and a metal guide member 3. The box 2 has a facing surface 20 that is one side that faces and faces the workpiece, and the entire facing surface 20 is open. The box 2 is provided with a suction port 22 on the peripheral surface. The suction port 22 and the opening of the facing surface 20 communicate with each other through the internal space of the box body 2. A suction device 6 for sucking dust is attached to the suction port 22. In the state where the opening of the facing surface 20 is blocked by the workpiece, the suction device 6 sucks air from the suction port 22, and the internal space of the box body 2 is set to a negative pressure.
On the box 2, an insertion port 23 into which the guide member 3 is inserted is opened on a surface 21 located on the opposite side of the facing surface 20 from the workpiece. In this embodiment, the wall surface 9 is illustrated as a workpiece, and the box 2 is assumed to be used in a vertical state facing the wall surface 9. However, this is for convenience of explanation, and the box 2 may be installed horizontally or tilted from the horizontal. Further, the workpiece is not limited to the wall surface 9.

The guide member 3 includes a pipe 30 whose longitudinal direction forms a predetermined angle with respect to the surface of the wall surface 9, and a plate-like fitting piece 31 that extends outward from one end of the pipe 30. The pipe 30 shown in FIG. 1 extends orthogonally to the surface of the wall surface 9, and the fitting piece 31 extends substantially parallel to the surface of the wall surface 9.
As shown in FIG. 2, a drill 8 attached to a power tool (not shown) is inserted into the pipe 30, and the pipe 30 guides the drill 8 to a wall surface 9 to be drilled at a predetermined angle. The drill 8 is provided with a rod 80 at a predetermined length position along the axial direction from the tip, and the distance from the tip of the drill 8 to the rod 80 is longer than the axial length of the pipe 30.
As will be described later, a plurality of types of guide members 3 are prepared, and each guide member 3 has a different inclination angle of the pipe 30. One of a plurality of guide members 3 is selectively attached to the box 2.

  A holding ring 24 is formed inside the box 2 so as to surround the insertion opening 23 (see FIG. 3), and a guide member holding portion 4 formed of an elastic member is fitted into the holding ring 24. The guide member holding portion 4 is configured by connecting a pair of holding portions 40 spaced apart in the thickness direction of the box body 2 with a connecting piece 41, and the fitting piece 31 fits in a gap S between the holding portions 40. . The vertical distance of the gap S is formed to be much longer than the vertical length of the fitting piece 31. With the fitting piece 31 fitted in the gap between the holding portions 40, the guide member 3 is restricted from moving in the direction perpendicular to the wall surface 9. In this state, the tip of the pipe 30 is located in the same plane as the facing surface 20, that is, contacts the wall surface 9. A first notch 32 is formed on the peripheral surface of the tip portion of the pipe 30, and the role of the first notch 32 will be described later.

A partition wall 25 projects from the holding ring 24 toward the facing surface 20 so as to surround the pipe 30. In a state where the facing surface 20 of the box 2 is in contact with the wall surface 9, the tip of the partition wall 25 is in contact with the wall surface 9. As described above, since the box body 2 is formed of an elastic member, it may be deformed when pressed toward the wall surface 9. In view of this, in a state where the facing surface 20 of the box 2 is in contact with the wall surface 9, the tip of the partition wall 25 is brought into contact with the wall surface 9 to prevent the box body 2 from being pressed and deformed.
In the partition wall 25, a second notch 26 is opened, and the space surrounded by the partition wall 25 is negative when the suction device 6 is fitted in the suction port 22 and the inside of the box body 2 is under negative pressure. Become pressure.
The pipe 30 is located inside the partition wall 25. In a state where the suction device 6 is fitted into the suction port 22 and the inside of the box body 2 is set to a negative pressure, the air in the pipe 30 is also sucked through the first notch 32, and the inside of the pipe 30 also has a negative pressure. That is, the first notch 32 constitutes the “communication portion” of the present invention.

  FIG. 3 is a front view of the box 2 shown in FIG. As shown in FIGS. 1 and 3, a linear spring body 7 is provided in the gap S between the holding portions 40, and the fitting piece 31 is biased downward by the spring body 7 as shown in FIG. 2. And pressed against the connecting piece 41. This restricts the guide member 3 from rattling up and down within the gap.

(Attaching the guide member to the box)
The guide member 3 is attached to the box 2 by the following procedure. As shown in FIG. 4 (a), the operator holding the guide member 3 inserts one end portion of the fitting piece 31 into the insertion port 23 from an obliquely lower side, and enters the gap S between the holding portions 40. One end of the fitting piece 31 is inserted. When the spring body 7 is pushed against the biasing force at one end of the fitting piece 31, the spring body 7 is elastically deformed. As described above, since the vertical distance of the gap S is formed to be longer than the vertical length of the fitting piece 31, the fitting piece 31 is parallel to the wall surface 9 as shown in FIG. If tilted like this, the fitting piece 31 fits into the gap S.
When the operator removes his / her hand from the guide member 3, the fitting piece 31 is urged downward by the urging force of the spring body 7 and is pressed against the connecting piece 41. Thereby, the guide member 3 is attached to the box 2 in a state where upper and lower backlash is restricted.

A plurality of guide members 3 are prepared, and each guide member 3 has a different inclination angle of the pipe 30 with respect to the wall surface 9. In this embodiment, as shown in FIG. 5, two types of guide members are exemplified, and the guide member whose axial direction of the pipe 30 shown in FIGS. 1 and 2 is perpendicular to the wall surface 9 is the first guide member 3. A guide member in which the axial direction of the pipe 30 is inclined with respect to the wall surface 9 is defined as a second guide member 3b.
As shown in FIG. 6 (a), when the pilot hole is made perpendicular to the wall surface 9, the first guide member 3 is attached to the box body 2, and the facing surface 20 of the box body 2 is applied to the wall surface 9. If the suction device 6 is fitted into the suction port 22 and the air inside the box body 2 is sucked by the suction device 6, the inside of the box body 2 becomes negative pressure, so the box body 2 and the first guide member 3 are wall surfaces. 9 is attached. As described above, the end surface of the pipe 30 of the first guide member 3 is in contact with the wall surface 9.
When the drill 8 is inserted into the pipe 30, the drill 8 is guided by the pipe 30 and proceeds vertically to the wall surface 9. In this state, the drill 8 is pushed forward while rotating the drill 8 with the electric tool. The dust generated when the drill 8 drills into the wall surface 9 is sucked into the suction device 6 from the suction port 22. Therefore, the dust or the like does not scatter outside the box 2. When the rod 80 of the drill 8 contacts the tip of the pipe 30, the progress of the drill 8 is stopped. As described above, since the distance from the tip of the drill 8 to the flange 80 is longer than the axial length of the pipe 30, a pilot hole perpendicular to the wall surface 9 is formed in a state where the progress of the drill 8 is stopped.

  As shown in FIG. 6 (b), when the pilot hole inclined with respect to the wall surface 9 is opened, the second guide member 3b is attached to the box 2 in the same manner as described above, and the inside of the box 2 is If the drill 8 is inserted into the pipe 30 in a state where the pressure is applied, the drill 8 is guided by the pipe 30 and is inclined with respect to the wall surface 9. If the drill 8 is rotated with the electric tool in this state, a pilot hole inclined with respect to the wall surface 9 is formed.

When drilling a pilot hole for anchoring, it is necessary to make a pilot hole of a certain depth from the wall surface 9. For example, when an anchor of the same size is attached to the pilot hole, it is necessary to drill a pilot hole of the same depth whether it is drilled perpendicularly to the wall surface 9 or tilted with respect to the wall surface 9. Here's why. In order to ensure the pullout strength of the anchor, the depth of the pilot hole is determined by design depending on the type of anchor. If the depth of the pilot hole is shallow, the anchor cannot be attached or is insufficiently attached. In this case, the predetermined pullout strength of the anchor cannot be ensured. Therefore, it is necessary to make a pilot hole of a certain depth from the wall surface 9 without fail.
In view of this point, the length of the pipe 30 of the first guide member 3 shown in FIG. 5A is equal to the length of the pipe 30 of the second guide member 3b shown in FIG. 5B.
Specifically, the length L1 from the tip surface of the pipe 30 of the first guide member 3 to the end surface in contact with the wall surface 9 and the length from the tip surface of the pipe 30 of the second guide member 3b to the end surface in contact with the wall surface 9 are as follows. L2 is provided equally.
As described above, the flange 80 of the drill 8 comes into contact with the tip of the pipe 30, the progress of the drill 8 is stopped, and a pilot hole is drilled. Therefore, by providing the pipe 30 with the same length between the guide members 3 and 3b, even if the drilling angle changes, a single drill having the same length can be used to drill a pilot hole having the same depth. Can do.

The drill positioning device according to the present embodiment has the following effects.
1. The drill 8 is guided to the workpiece at a predetermined angle by the pipe 30 in a state where the facing surface 20 of the box 2 to which the desired guide member 3 is attached is in contact with the workpiece. Thereby, the pilot hole inclined by a predetermined angle with respect to the surface of the workpiece can be accurately drilled with the drill 8.
2. A plurality of types of guide members 3 and 3b are prepared, and the guide angle of the drill 8 to the workpiece by the pipe 30 is different for each of the guide members 3 and 3b. The operator selects the guide members 3 and 3b having the pipe 30 inclined at a desired angle with respect to the workpiece, attaches to the guide member holding portion 4 of the box 2, and inserts the drill 8 into the pipe 30. Thus, a pilot hole inclined by a predetermined angle with respect to the surface of the workpiece can be accurately drilled with the drill 8.
3. If air is sucked from the suction port 22 in a state where the facing surface 20 of the box 2 is in contact with the workpiece and the opening is blocked by the workpiece, the internal space of the box 2 becomes negative pressure. That is, the box body 2 is attached to the work piece without being gripped by the operator, and at the same time, dust at the time of drilling is also sucked from the suction port 22. Thereby, the troublesomeness which an operator presses down the box 2 can be eliminated.

  In this embodiment, two types of guide members 3 and 3b are prepared. However, three or more types of guide members may be prepared. The guide members 3 and 3b are mainly formed of a metal such as stainless steel, but are not limited to the stainless steel and may be any metal that can withstand the rotational vibration of the drill 8. Further, the guide member holding portion 4 may be provided separately or integrally with the box body 2. Further, a through hole may be provided in the pipe 30 instead of the first notch 32. Instead of the second cutout 26, a through hole may be provided in the partition wall 25.

  The present invention is advantageous when applied to a drill positioning machine used when making a pilot hole in a workpiece such as a wall surface.

2 Box 3 Guide member 4 Guide member holding part 8 Drill

Claims (5)

A box having a facing surface facing the workpiece and having an opening on the facing surface;
A plurality of types of guides each having a pipe for guiding a drill attached to the power tool to a workpiece to be drilled by the drill at a predetermined angle, the guide angles of the drill to the workpiece being different from each other. With members,
The box is provided with a suction port to which a suction device for sucking dust at the time of drilling is attached, and a guide member holding portion to which one of the plurality of types of guide members is selectively attached,
The suction port and the opening of the facing surface communicate with each other through an internal space of the box, and the air flows from the suction port in a state where the facing surface is in contact with the workpiece and the opening is blocked by the workpiece. A drill positioning machine, in which the internal space of the box is made negative pressure by suction. The plurality of types of guide members each include the pipe and a fitting piece extending outward from the peripheral surface of the pipe,
The guide member holding portion includes a holding portion formed of an elastic material, and the holding portion holds the fitting piece so as to restrict the movement of each guide member in a direction perpendicular to the surface of the workpiece. The drill positioning device according to claim 1. The drill positioning device according to claim 2, wherein a spring body that restricts movement of the fitting piece clamped by the clamping part along the pipe radial direction is provided in the clamping part. The drill positioning device according to any one of claims 1 to 3, wherein a communicating portion is provided at a tip portion of the pipe facing the workpiece to communicate the inside of the pipe and the internal space of the box. 4. The drill positioning device according to claim 1, wherein each of the plurality of types of guide members has an equal length from a tip end surface of the pipe to an end surface in contact with the workpiece.

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