JP4668113B2 - Guide jig for drill - Google Patents

Description

The present invention relates to a guide jig for maintaining a drill perpendicular to a planned drilling surface of a workpiece when drilling with an electric drill.

When a hole is to be drilled in a workpiece drilling surface using a drill, the operator rotates the drill while holding the electric tool by hand and standing the drill perpendicular to the workpiece drilling surface.

However, if the worker is not an expert, there is a disadvantage that the drill is drilled in a state where the drill is inclined with respect to the surface of the workpiece to be drilled.

The present invention has been made in order to solve the above-described problems. In a drill guide jig, a support member and a guide member are provided, and the support member is brought into contact with a planned drilling surface of the workpiece on the lower side. The support member has a support surface and a support hole extending linearly along the contact surface. The guide member is slidably supported by the support hole of the support member, and the support member is in contact with the support hole. A drill guide hole extending linearly perpendicular to the surface is provided.
According to the above configuration, by placing the support member on the planned drilling surface of the workpiece, the drill guide hole becomes perpendicular to the planned drilling surface. Therefore, when a drill attached to the electric tool is inserted into the drill guide hole, the drill is maintained perpendicular to the planned drilling surface. In this state, a hole perpendicular to the planned drilling surface can be surely formed by rotating the tip end of the drill against the planned drilling surface.

Preferably, the support member has a positioning surface that is orthogonal to the contact surface and abuts against a side surface of the workpiece. According to this configuration, the drill guide hole can be positioned.

Preferably, the support member has an elongated scale plate portion, the support hole is formed along the longitudinal direction of the scale plate portion, and the lower side of the scale plate portion is provided as the contact surface. The upper side of the unit is provided as a scale display surface, and the scale is displayed along the support holes on the scale display surface.
According to this configuration, the drill guide hole can be accurately positioned at a desired position using the scale.

Preferably, the guide member includes a bolt and a nut screwed to the bolt, and is fastened so that the scale plate portion is sandwiched between the bolt and the nut, so that the guide member is fixed at an arbitrary position of the support hole. An accommodation recess extending along the support hole is formed on the contact surface of the scale plate portion. The accommodation recess is wider than the support hole, and a part of the bolt or nut is accommodated in the accommodation recess. The drill guide hole is formed along the central axis of the bolt.
According to this configuration, the position of the drill guide hole can be adjusted by loosening the bolt and nut, and the drill guide hole can be fixed at a predetermined position of the scale plate portion by tightening. As a result, a hole can be drilled at an accurate position, and the drilling operation can be performed stably. Further, if a plurality of bolts having different diameters of the drill guide holes are facilitated, drills having different diameters can be guided.

Preferably, the nut includes a flange portion accommodated in the accommodating recess of the scale plate portion, and a cylindrical portion that stands up from the flange portion and passes through the support hole and protrudes above the scale display surface. A female screw that is supported by the scale plate portion in a non-rotating state and into which the bolt is screwed is formed, and the guide member includes a head portion of the bolt and a scale display surface of the scale plate portion. The spacer has a cylindrical spacer interposed therebetween, and the spacer has a convex portion inserted into the support hole in a non-rotating state, and a mark corresponding to the scale is displayed.
According to this configuration, the position of the drill guide hole can be accurately set from the scale position indicated by the spacer mark.

Preferably, the bolt has a head housed in a housing recess of the scale plate portion and a shaft portion that passes through the support hole and protrudes above the scale display surface, and the scale plate portion in a non-rotating state. The guide member is provided with a cylindrical spacer interposed between the nut and the scale display surface of the scale plate part, and the spacer is While having the convex part inserted in the support hole in the non-rotating state, the mark corresponding to the said scale is displayed.
According to this configuration, the position of the drill guide hole can be accurately set from the scale position indicated by the spacer mark.

A drill guide jig according to another aspect of the present invention includes a nut and a bolt that is screwed onto the nut from above, and the nut includes a tube portion into which the bolt is screwed, and a lower end portion of the tube portion. A presser hook part for pressing with a finger formed on the outer periphery, and a lower surface of the presser hook part is provided as an abutting surface that comes into contact with a planned drilling surface of the workpiece. A drill guide hole is provided along the central axis and orthogonal to the contact surface of the nut.
According to this configuration, it is possible to stand the drill perpendicular to the planned drilling surface of the workpiece while having a small and simple structure. Moreover, drills with different diameters can be guided by replacing the drill guide holes with bolts having different diameters.

In the drill guide jig constituting still another aspect of the present invention, the shaft guide and the presser hook for pressing with a finger formed on the outer periphery of the lower end of the shaft are integrally provided. A lower surface is provided as an abutting surface to be abutted against a drilling surface of the workpiece, the shaft portion includes a drill guide hole extending along a central axis thereof and perpendicular to the abutting surface, and the shaft portion A chip accommodating space is formed on the lower surface of the drill guide and is continuous with the lower end of the drill guide hole.
According to this configuration, it is possible to stand the drill perpendicular to the planned drilling surface of the workpiece while having a simple structure with a minimum number of parts.

By using the drill guide jig of the present invention, it is possible to reliably form a hole perpendicular to the surface of the workpiece to be drilled.

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 3
Indicates the entire drill guide jig. First, the configuration of the guide jig will be schematically described.
The guide jig includes a support member 10 and a guide member 20 supported by the support member 10.
The support member 10 has a scale plate 11 (scale plate portion) that extends long and linearly, and a positioning member 12 (positioning portion) provided at one end of the scale plate 11.

As shown in FIGS. 1 and 4, the scale plate 11 has a support hole 1 extending linearly in the longitudinal direction.
1a, the upper surface of which is provided as a scale display surface 11b. This scale display surface 11
In b, a scale 11x is displayed along the support hole 11a. In the present embodiment, the scale 11x is displayed on both sides of the support hole 11a, but may be displayed only on one side.
In addition, a mark 11x ′ is displayed on the scale display surface 11b at one end in the longitudinal direction of the support hole 11a (the end away from the positioning member 12). This mark 11x ′ is located at the center in the width direction of the support hole 11a and extends linearly along the extension of the center line of the support hole 11a. In the present embodiment, the mark 11x ′ is displayed only at one end of the support hole 11a, but may be displayed at both ends.

As shown in FIGS. 3 and 5, the lower surface of the scale plate 11 is formed with a relatively deep accommodating recess 11c at the center in the width direction and relatively shallow accommodating grooves 11d on both sides in the width direction. 1
1 c and the accommodation groove 11 d extend linearly in parallel with each other in the longitudinal direction of the scale plate 11.

As shown in FIG. 5, the receiving recess 11c is wider than the support hole 11a, so that a pair of steps 11e are formed between both side surfaces of the receiving recess 11c in the width direction and both side surfaces of the support hole 11a. Is formed.

As shown in FIG. 2, the positioning member 12 has an upper surface, that is, a mounting surface 12a, and a flat positioning surface 12b orthogonal to the mounting surface 12a.
As shown in FIG. 3, the mounting surface 12a has three protrusions 1 that extend linearly in parallel with each other.
2c and 12d are formed. The relatively high central ridge 12c fits into one end of the housing recess 11c of the scale plate 11, and the relatively low ridges 12d on both sides fit into one end of the housing groove 11d. In the fitted state of the protrusions 12c, 12d and the grooves 11c, 11d, the scale plate 11
The positioning member 12 is fixed with a screw 13 to one end portion of the.

As shown in FIGS. 2 and 5, an anti-slip friction member 14 made of rubber or the like is attached to the lower surface of the scale plate 11 in almost the entire region except the attachment region of the positioning member 12. The friction member 14 is thin, long, and linearly extends, and is attached so as to enter the receiving grooves 11d on both sides of the scale plate 11, as shown in FIG. The friction member 14 is a scale plate 11.
A small amount protrudes from the lower surface. The friction member 14 constitutes a part of the scale plate 11, and the lower surface thereof is provided as a contact surface 14 a that functions as described below. The abutting surface 14a is the positioning surface 12.
It is orthogonal to b.

Next, the structure of the guide member 20 will be described. As best shown in FIGS. 5 and 6, the guide member 20 includes a nut 21, a bolt 22, and a spacer 23.

The nut 21 has a cylindrical portion 21a and a flat square flange portion 21b formed at the lower end of the cylindrical portion 21a. A female screw 21x is formed on the inner periphery of the cylindrical portion 21a.
The flange 21b of the nut 21 is accommodated in the accommodating recess 11c of the scale plate 11, and the nut 21 is prevented from rotating by the two opposing sides of the flange 21b hitting both side surfaces of the accommodating recess 11c. Note that the nut 21 may be prevented from rotating by making the cylindrical portion 21a square in cross section and engaging the support hole 11a. The flange 21b is located above the contact surface 14a.
The cylindrical portion 21a of the nut 21 protrudes above the scale plate 11 through the support hole 11a.

As best shown in FIGS. 6 and 7, the spacer 23 protrudes downward from the cylindrical portion 23a, a rectangular flange 23b formed at the lower end thereof, and the lower surface of the flange 23b. And a pair of convex portions 23c.

The spacer 23 is fitted into the cylinder portion 21a of the nut 21 protruding upward from the scale plate 11 so as to surround the cylinder portion 21a. Further, the protrusion 23 of the spacer 23
The spacer 23 is prevented from rotating with respect to the scale plate 11 by fitting c into the support hole 11a.

The bolt 22 has a shaft portion 22a and a head portion 22b formed at the upper end portion of the shaft portion 22a. A male screw 22x is formed on the outer periphery of the shaft portion 22a, and a drill guide hole 22y is formed through the central axis of the shaft portion 22a.

The shaft portion 22a of the bolt 22 is screwed into the tube portion 21a of the nut 21 from above. Since the nut 21 is prevented from rotating with respect to the scale plate 11 during this screwing, the screwing can be performed with good workability.

In the screwed state, the scale plate 11 and the spacer 23 are sandwiched between the flange portion 21b of the nut 21 and the head portion 22b of the bolt 22, whereby the guide member 20 is assembled and the scale plate 11 is attached to the scale plate 11. It is attached. In this state, the drill guide hole 2 of the bolt 22
2 y is orthogonal to the contact surface 14 a of the scale plate 11.

With the bolts 22 loosened, the guide member 20 can be slid along the support holes 11 a of the scale plate 11. When the bolt 22 is tightened, the flange portion 21 b of the nut 21 hits the step 11 e of the scale plate 11, the head portion 22 b of the bolt 22 hits the upper end surface of the spacer 23, and the lower end surface of the spacer 23 is the scale of the scale plate 11. By strongly hitting the display surface 11b, it can be fixed at a desired position.

As shown in FIGS. 5 and 6, the lower end surface of the shaft portion 22 a of the bolt 22 is located above the lower end of the nut 21, whereby the lower end surface of the shaft portion 22 a and the tube portion 21 a of the nut 21.
A chip accommodating space 25 is formed between the two.

As shown in FIGS. 1, 2, and 7, two marks 23 x corresponding to the scales 11 x on both sides of the scale plate 11 are displayed from the upper surface to the side surface of the flange portion 23 b of the spacer 23. The position of the guide member 20 relative to the scale plate 11 can be known by indicating this mark 23x at one place on the scale 11x. Since the spacer 23 is prevented from rotating with respect to the scale plate 11, the mark 23 x can indicate the exact position of the drill guide hole 22 y of the guide member 20.
Further, another mark 23x ′ is displayed from the upper surface to the side surface of the flange portion 23b of the spacer portion 23. These two marks 23x ′ are 90 ° apart from the above-described marks 23x, and are positioned on the center line of the support hole 11a with the guide member 20 supported by the scale plate 11. One mark 23x ′ may be provided.

When the guide member 20 is at a position indicated by an imaginary line in FIGS. 1 and 2, the mark 23x of the spacer 23 indicates “0” of the scale 11x. This is because the drill guide hole 22y of the guide member 20
Indicates a position coincident with the positioning surface 12 b of the support member 10. When the guide member 20 is at the position indicated by the solid line in FIGS. 1 and 2, the mark 23x of the spacer 23 is “2.0” on the scale 11x.
". This indicates that the drill guide hole 22y is located at a position 2.0 mm away from the positioning surface 12b.

As shown in FIG. 4, a screw hole 11f is formed at one end of the scale plate 11, and an escape hole (not shown) is formed in the positioning member 12 corresponding to the screw hole 11f. Figure
1. As shown in FIG. 2, spare bolts 22A and 22B are screwed into these screw holes 11f. These spare bolts 22A and 22B have the same configuration as the bolt 22 and have the same screw diameter, but differ only in the diameter of the drill guide hole 22y.

The diameter of the drill guide hole 22y of the bolts 22, 22A, 22B is the drill 100 (described later).
It is slightly larger than the diameter of FIG. Bolts 22 are used corresponding to 1.5 mm diameter drills 100, and similarly, bolts 22A and 22B are used corresponding to drill diameters of 2.0 mm and 3.0 mm, respectively.

Next, the operation of the guide jig having the above configuration will be described. As described above, with the guide member 20 fixed at a desired position with respect to the scale plate 11, the contact surface 14a of the support member 11 is brought into contact with the planned drilling surface Wa of the workpiece W such as wood, and the positioning surface 12b is set to the workpiece. Hit the side Wb of W. Accordingly, the drill guide hole 22y of the guide member 20 is perpendicular to the planned drilling surface Wa of the workpiece W, and is positioned at the desired position (desired distance from the side surface Wb) with respect to the side surface Wb of the workpiece W. (Hereinafter referred to as X-coordinate positioning).
When positioning in the direction parallel to the side surface Wb of the workpiece W (hereinafter referred to as Y-coordinate positioning), a straight line passing through the coordinate position and perpendicular to the side surface Wb is drawn on the planned hole Wa using a pencil or the like. Keep it. Then, the scale plate 11 is positioned so that the mark 11x ′ on the scale display surface 11b and the mark 23x ′ on the guide member 20 are aligned with this straight line.
As described above, accurate positioning can be performed with respect to both the X and Y axes, but the Y coordinate positioning operation may be omitted.

After installing the guide jig on the workpiece W as described above, while holding the guide jig with one hand, hold the power tool with the other hand, insert the drill 100 into the drill guide hole 22y,
Furthermore, the tip edge part is applied to the drilling planned surface Wa of the workpiece W through the chip accommodating space 25. In this state, by turning on the electric tool to rotate the drill 100 and pushing it down, it is possible to form a hole in the drilled surface Wa.

During the above drilling operation, the drill 100 is guided to the drill guide hole 22y and is scheduled to be drilled W
Since it is maintained perpendicular to a, it is possible to make a hole perpendicular to the planned drilling surface Wa. Moreover, since the distance from the end (side surface Wb) of the drilling planned surface Wa is set accurately, the drill 100 can set the hole at an accurate position.

Since the chips generated during the drilling are discharged into the chip storage space 25, the drilling is not hindered.

When making a larger hole, the drill 100 having a larger diameter is used, but the spare bolt 22A or 22B may be replaced with the bolt 22 and screwed into the nut 21 correspondingly.
The guide member 20 can be used even if it is removed from the support member 10. In this case, the lower surface of the nut 21 may be brought into contact with the planned drilling surface Wa of the workpiece W.

Hereinafter, other embodiments of the present invention will be described. In these embodiments, components corresponding to the embodiments described earlier are assigned the same reference numerals, and detailed descriptions thereof are omitted.
In the second embodiment shown in FIG. 8, a locking groove 11 g extending linearly in the extending direction of the support hole 11 a is formed in the step 11 e of the scale plate 11. On the other hand, locking protrusions 21c that extend linearly are formed on two corresponding sides of the flange portion 21b of the nut 21. The nut 21 is prevented from rotating by the fitting of the locking groove 11g and the locking protrusion 21c. Other configuration is first
This is the same as the embodiment.

In the third embodiment shown in FIG. 9, a height adjusting nut 26 is screwed onto the shaft portion 22 a of the bolt 22. In this embodiment, when the bolt 22 is screwed into the nut 21, the height adjusting nut 26 hits the upper end surface of the spacer 23. Thereby, the height with respect to the scale plate 11 of the volt | bolt 22 can be adjusted. Other configurations are the same as those of the first embodiment.

In the fourth embodiment shown in FIG. 10, the head 22 b of the bolt 22 has a rectangular shape and is housed in the housing recess 11 c of the scale plate 11 in a non-rotating state, and the shaft 22 a of the bolt 22 is supported by the support hole 11.
a is inserted and protrudes upward from the scale display surface 11b. The head 22b of the bolt 22
Is located above the contact surface 14a.
A nut 21 is screwed into the upper end portion of the shaft portion 22a of the bolt 22 or in the vicinity thereof.
The nut 21 has a ring shape.

In the above embodiment, by tightening the nut 21, the head 22 b of the bolt 22 hits the step 11 e of the scale plate 11, the lower surface of the nut 21 hits the upper end surface of the spacer 23, and the lower end surface of the spacer 23 is the scale plate 11. By hitting the scale display surface 11b, the guide member 20
Is fixed to the scale plate 11.
In this embodiment, the protrusion 23c of the spacer 23 forms a quadrangle and fits into the support hole 11a, thereby preventing the spacer 23 from rotating. Other configurations are the same as those of the first embodiment.

In the fifth embodiment shown in FIG. 11, the support member 10 is configured by bending a single metal plate at a right angle, and the scale plate portion 11 and the positioning portion 12 are integrated. With this configuration, the manufacturing cost of the support member 10 can be reduced. The friction member 14 may be attached below the scale plate portion 11 as in the first embodiment, but when not attached, the lower surface 11h of the scale plate portion 11 is provided as a contact surface. Other configurations are the same as those of the first embodiment.

In the sixth embodiment shown in FIG. 12, a guide jig is constituted by the nut 121 and the bolt 22. The nut 121 includes a cylindrical portion 121a having an internal thread 121x on the inner periphery, and the cylindrical portion 12
A presser flange 121b for pressing with a finger formed at the lower end of 1a, and the lower surface 121c of the presser hook 121b is provided as a contact surface that comes into contact with a planned drilling surface of the workpiece, Alternatively, as illustrated, the lower surface 114a of the elastic member 114 attached to the annular groove 121d of the lower surface 121c is provided as a contact surface. The bolt 22 has the same configuration as in the first embodiment.
In the sixth embodiment, the height adjusting nut 26 of the third embodiment shown in FIG. 9 can also be used.

Also in the sixth embodiment, the lower end surface of the shaft portion 22 a of the bolt 22 and the cylindrical portion 121 of the nut 121.
A chip accommodating space 25 that is continuous with the drill guide hole 22y is formed by a.
At the time of drilling, the contact surface 114a is placed on the surface to be drilled of the workpiece, and the presser foot 12
1b is held by the finger of one hand of the operator, the electric tool is held by the other hand, the drill is inserted into the drill guide hole 22y, and is applied to the planned drilling surface of the workpiece through the chip accommodating space 25.
Also in the said 6th Embodiment, the volt | bolt 22 can be replaced | exchanged corresponding to a drill diameter similarly to 1st Embodiment.

In the seventh embodiment shown in FIG. 13, the guide jig 200 is constituted by a single unit. That is, the guide jig 200 integrally includes a shaft portion 201 and a pressing rod portion 202 for pressing with a finger formed on the outer periphery of the lower end portion of the shaft portion 201, and a lower surface 202 a of the pressing rod portion 202 is As shown in the drawing, the lower surface 114a of the elastic member 114 attached to the annular groove 202b of the lower surface 202a is provided as the contact surface. .

The shaft portion 201 has a drill guide hole 201y extending along the central axis thereof and orthogonal to the contact surface 114a, and a chip accommodating space 205 formed on the lower surface of the shaft portion 201 and continuing to the lower end of the drill guide hole 201y. Is formed. Since the operation at the time of drilling is the same as that of the sixth embodiment, the description thereof is omitted.

The present invention is not limited to the above-described embodiment, and various aspects can be made. Regarding the material of the guide jig, members that form drill guide holes (the bolts 22 and the seventh of the first to sixth embodiments)
It is preferable to use hardened steel for the guide jig 200) of the embodiment, and the other members are metal,
Resin or the like can be used.

It is a top view of the drill guide jig which makes a 1st embodiment of the present invention. It is a front view of the same guide jig. It is a right view of the same guide jig. It is a top view which shows the scale plate of the guide jig. It is sectional drawing which follows the AA line in FIG. It is sectional drawing which follows the BB line in FIG. The spacer of the guide jig is shown, (A) is a plan view and (B) is a bottom view. FIG. 6 is a view corresponding to FIG. 5 of a drill guide jig forming a second embodiment of the present invention. FIG. 6 is a view corresponding to FIG. 5 of a drill guide jig constituting a third embodiment of the present invention. FIG. 6 is a view corresponding to FIG. 5 of a drill guide jig forming a fourth embodiment of the present invention. It is a front view of the drill guide jig which makes 5th Embodiment of this invention. It is a longitudinal cross-sectional view of the drill guide jig | tool which makes 6th Embodiment of this invention. It is a longitudinal cross-sectional view of the drill guide jig | tool which makes 7th Embodiment of this invention.

Explanation of symbols

10 Support member 11 Scale plate (scale plate part)
11a Support hole 11b Scale display surface 11x Scale 12 Positioning member (positioning part)
12b Positioning surface 14a, 114a Contact surface 20 Guide member 21 Nut 21a Tube portion 21b Hook portion 22 Bolt 22a Shaft portion 22b Head portion 22y Drill guide hole 23 Spacer 23c Non-rotating convex portion 23x Mark 121 Nut 121a Tube portion 121b Presser Gutter part 200 Guide jig 201 Shaft part 201y Drill guide hole 202 Holding bar part 205 Chip accommodating space

Claims (4)

A support member and a guide member;
The support member has an elongated scale plate portion, and a support hole extending linearly along the longitudinal direction is formed in the scale plate portion, and the upper side of the scale plate portion is provided as a scale display surface. A scale is displayed along the support hole on the display surface, and the lower side of the scale plate portion is provided as a contact surface that is in contact with a planned drilling surface of the workpiece,
The guide member is slidably supported in the support hole of the scale plate part , and includes a bolt and a nut screwed into the bolt, and tightening the scale plate part with the bolt and the nut, It is designed to be fixed at an arbitrary position of the support hole,
The bolt is formed with a drill guide hole extending linearly along the central axis and perpendicular to the contact surface of the scale plate portion,
An accommodation recess extending along the support hole is formed on the contact surface of the scale plate portion, the accommodation recess is wider than the support hole, and a part of the bolt or nut is accommodated in the accommodation recess. A drill guide jig characterized by   The drill guide jig according to claim 1, wherein the support member has a positioning surface that is orthogonal to the contact surface and abuts against a side surface of the workpiece. The nut includes a flange portion accommodated in the accommodating recess of the scale plate portion, and a cylindrical portion that stands up from the flange portion and passes through the support hole and protrudes above the scale display surface. Is supported by the scale plate portion, and a female screw is formed in which the bolt is screwed into the cylindrical portion,
The guide member further includes a cylindrical spacer interposed between the head of the bolt and the scale display surface of the scale plate portion, and the spacer has a convex portion inserted in the support hole in a non-rotating state. The drill guide jig according to claim 1, wherein a mark corresponding to the scale is displayed. The bolt has a head housed in the housing recess of the scale plate portion and a shaft portion that passes through the support hole and protrudes above the scale display surface, and is supported by the scale plate portion in a non-rotating state. ,
A nut is screwed onto the shaft,
Further, the guide member includes a cylindrical spacer interposed between the nut and the scale display surface of the scale plate portion, and the spacer has a convex portion inserted in a non-rotating state in the support hole, The drill guide jig according to claim 1 or 2 , wherein a mark corresponding to the scale is displayed.

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