JPH04102711U - Centering rod and electric drill for drilling - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the workability and accuracy of drilling work. [Structure] The blade is removably protruded from the blade attachment part of the electric drilling drill from which the blade has been removed, and is positioned coaxially with the blade when it is installed in the attachment part, and is removably protruded from the blade attachment part during drilling work. After attaching the centering rod and aligning the tip of the centering rod with the center of the hole to be drilled, install the electric drilling drill body on a wall or floor surface, and then center it from the attachment part. The rod is removed, and a cutter is attached to the attached portion to make a hole.

Description

[Detailed explanation of the idea] [Industrial application field]

0001 The present invention relates to a centering rod and an electric drill for drilling, especially for heating and cooling, electricity, telephone, etc. Used for drilling holes in reinforced concrete, etc. in the piping field for gas, water, etc. The present invention relates to techniques that are effective when applied to centering rods and electric drilling drills.

0002 For example, it can be used as an electric drill for drilling reinforced concrete, etc. base, and multiple level adjustment bolts that protrude freely from the bottom of the base. and a column that stands up from the base, and a column that is displaced along its axial direction. A slide block with a motor that can be mounted and a slide block on the base side A removable projecting member parallel to the column from the mounting portion on the end face side of the slide block. and a cutting tool operated by the driving force of the motor. Lil is known.

0003 Drilling with an electric drill like this begins with drilling from the core of the hole to be drilled. Drill holes on the wall or floor at specified intervals using a hammer drill, etc., and Drive a hole-in anchor into the hole-in anchor and insert a bolt into the hole-in anchor. Insert.

0004 Next, pass the bolt through the long hole formed in the base and tighten it with a nut. Tighten and install the drill body on the wall or floor.

[0005] Next, screw in the level adjustment bolt as appropriate to adjust the horizontal and vertical positions, and then Attach the knife to the attachment part at the tip of the motor of the ride block.

[0006] After the blade is rotated by the driving force of the motor, the slide block The blade is pushed forward toward the hole to be drilled and the cutter is advanced to drill the hole.

[0007]

[Problem that the idea aims to solve]

By the way, when drilling with the electric drill for drilling as described above, The center of the hole may be indicated by the client; In this case, the mounting part of the blade and the center of the hole to be drilled, which are spaced apart from each other, face each other. After positioning the drilling drill body on the wall or floor, install the cutting tool. It was worn and had holes in it.

[0008] Therefore, the alignment of the hole to be drilled with the center is done by intuition by the operator. As a result, the workability is poor, and the holes may be drilled off-center.

[0009] The purpose of this invention is to provide a centering system that can improve the workability and accuracy of drilling operations. Its purpose is to provide drilling rods and electricity for drilling.

0010 The foregoing and other objects and novel features of the present invention are detailed in the description and appendices of this specification. This will become clear from the accompanying drawings.

[0011]

[Means to solve the problem]

Among the devices disclosed in this application, a brief overview of typical ones is as follows. ,It is as follows.

0012 In other words, the structure of the centering rod of the present invention is similar to that of an electric drilling drill with the cutter removed. located coaxially with the blade when it is installed from the blade mounting part to the blade mounting part. It has a structure in which it protrudes in a detachable manner.

[0013] In this case, a structure may be provided in which a spirit level is provided.

[0014] Additionally, the spirit level is capable of measuring the centering rod in the axial and transverse directions. Ru.

[0015] Next, the structure of the electric drilling drill of this invention consists of a mounting base and this base. a plurality of level adjustment bolts that protrude freely from the bottom side of the base; A column that stands up from a slide block with a motor attached thereto, and the slide block on the base side. removably protrudes from the mounting portion on the end face side of the lock in parallel with the support column; An electric drilling drill consisting of the above-mentioned cutting tool operated by the driving force of a motor. Therefore, the structure is provided with a centering rod having the structure described above.

[0016] In this case, a plurality of The large diameter hole is marked and the diameter is enlarged at the orthogonal point of the extension lines of the plurality of markings. When recognizing the center of the small diameter hole, place it in contact with the opening end of the small diameter hole The scale plate is equipped with a scale plate that is used when the scale plate is used. a plurality of marking parts each at least partially corresponding to the plurality of markings; A perpendicular part of the extension line of the indicated part is displayed, and the central part for the large diameter hole is indicated by the perpendicular part. The structure can be recognized.

[0017]

[Effect]

According to the above-mentioned structure of the centering rod of the present invention, the blade attachment part is A centering rod was attached to the centering rod, and the tip of the centering rod was aligned with the center of the hole to be drilled. Afterwards, install the electric drill body for drilling on a wall or floor, and then attach it to the mounting part. By removing the centering rod from the center and attaching a knife to the attachment part and drilling a hole, the knife can be removed. Since the tip of the hole is aligned with the center of the hole to be drilled, the workability of the drilling work is improved. This makes it possible to improve drilling accuracy.

[0018] In this case, if the structure is equipped with a spirit level, the level can be used to align the center. It is possible to perform centering based on the horizontal plane of the rod or the measurement of its deviation from this horizontal plane. As a result, it is possible to further improve the workability and accuracy of drilling work.

[0019] Additionally, the spirit level is capable of measuring the centering rod in the axial and transverse directions. With this structure, the workability and accuracy of drilling work can be improved by measuring in both directions. You can achieve even more.

[0020] Next, according to the structure of the electric drilling drill of the present invention, the centering rod of the above structure can be This feature improves workability and accuracy when making adjustments using the level adjustment bolt. It is possible to improve the

[0021] In this case, a plurality of The large diameter hole is marked and the diameter is enlarged at the orthogonal point of the extension lines of the plurality of markings. When recognizing the center of the small diameter hole, place it in contact with the opening end of the small diameter hole The scale plate is equipped with a scale plate that is used when the scale plate is used. a plurality of marking parts each at least partially corresponding to the plurality of markings; A perpendicular part of the extension line of the indicated part is displayed, and the central part for the large diameter hole is indicated by the perpendicular part. If the structure is such that the When increasing the diameter, the plurality of markings of the small diameter hole and the plurality of marking parts of the scale plate are Correspondingly, the scale plate is brought into contact with the opening end of the small diameter hole and positioned above the opening. The central part for the large diameter hole is recognized by the orthogonal part of the scale plate. Therefore, it is possible to improve the workability and accuracy of drilling work in such cases. You can improve your performance.

[0022]

【Example】

Fig. 1 is a sectional view showing a centering rod as an embodiment of the present invention, and Fig. 2 is a plan view thereof. 3 is a sectional view showing the adapter, and FIG. 4 is an electric drill for drilling, which is an embodiment of the present invention. Figure 5 is a rear view showing the base and support of the electric drilling drill. , Figure 6 is a plan view showing the scale plate of the electric drilling drill, and Figure 7 is the scale. A plan view showing how the board is used, Figure 8 shows its centering rod, electric drill for drilling, and FIG. 3 is a side view showing how the scale plate is used.

[0023] The centering rod 1 of this embodiment is a cylinder with a conical tip end as shown in FIGS. 1 and 2. It is formed into a shape and is applied to electric drilling drills 2 for drilling reinforced concrete, etc. ing.

[0024] As shown in FIGS. 4 and 5, the electric drilling drill 2 has a long hole for attachment. 3 is formed in the center of the base 4, and screws into the female screw holes at the four corners of this base 4. 4 level adjustment bolts 5 which are screwably protruded from the bottom side, and the base 4. The column 6 stands vertically from the top and engages the rack gear 7 of this column 6. A slide block 9 with a motor 8 mounted so as to be displaceable along the axial direction and the handle 10 provided on this slide block 9 and the slide block The feed handle 11 displaces the 9 by rotational manual operation, and the Parallel to the column 6 from the mounting part 12 on the tip side of the motor 8 on the end side of the slide block 9 A cutter 13 that is removably protruded and rotated by the driving force of the motor 8. It is equipped with

[0025] The centering rod 1 of this embodiment applied to this electric drilling drill 2 has a cutter 13 that is detachable. By being removably attached to the attachment part 12 of the electric drilling drill 2 that has been removed, , located coaxially with the blade 13 when attached to the attachment portion 12 It's starting to stand out from the crowd.

[0026] As shown in FIGS. 1 and 2, a notch 14 is formed on the outer surface of the centering rod 1. ing.

[0027] A spirit level 16 held by a holder 15 is placed in the notch 14 of the centering rod 1 so that it is flush with the notch 14 of the centering rod 1. The spirit level 16 is provided so as to be able to swing on a surface, and the swinging of the spirit level 16 is caused by a spring 17. Therefore, the ball 18 that is biased toward the holder 15 is attached to the bottom surface of the holder 15 by 90°. Coaxial with the centering rod 1 by recessing and appearing in the recess 19 arranged at an angle of It is stopped at a position 90 degrees from this position and intermittent rocking is performed. It is said to have a dynamic structure.

[0028] Therefore, the centering rod 1 of this embodiment has the following effects due to the rocking of the level 16: It is possible to measure the centering rod 1 in the axial and transverse directions on the same plane. Ru.

[0029] As shown in FIG. 3, a female threaded portion 20 is formed on the proximal end side of the centering rod 1. The male threaded portion 22 of the adapter 21 is screwed into the female threaded portion 20 to be connected. ing.

[0030] The centering rod 1 is connected to the male threaded portion 22 side of the adapter 21, and the centering rod 1 is connected to the male threaded portion 22 side. The other end of the same part 22 is inserted into the mounting part 12 of the electric drilling drill 2 and mounted. As a result, both the centering rod 1 and the electric drilling drill 2 are connected. Ru. Note that the adapter 21 has a spring 21A and a spring 21A. A stopper 21C consisting of a ball 21B biased in the protruding direction is provided. This is intended to prevent it from being pulled out when it is attached to the attachment section 12.

[0031] In addition, various types of adapter 21 are available with different outer diameters on the other end side. By appropriately selecting the adapter 21 from these various types, the inner diameter of the mounting portion 12 can be adjusted. The centering rod 1 can be attached to different types of electric drilling drills 2.

[0032] Next, the electric drilling drill 2 of this embodiment has a scale as shown in FIGS. 6 and 7. The opening of the small diameter hole 24 that is drilled and expanded by the blade 13 Three markings 25 are made at the end, and the extension is made by the orthogonal point of the extension lines of these three markings 25. Equipped with a scale plate 23 used to recognize the center of the large diameter hole 26 to be diameter-diametered. ing.

[0033] As shown in FIG. 7, the scale plate 23 is brought into contact with the opening end of the small diameter hole 24 and The scale plate 23 is used by being positioned above the mouth, but there is a three marking parts 27, each of which corresponds at least in part to the three markings 25; The orthogonal parts 28 of the extension lines of the three marking parts 27 are displayed, and the orthogonal parts 28 The central portion for the large diameter hole 26 is now recognized.

[0034] For example, the three marking portions 27 of the scale plate 23 are formed by elongated holes 3 formed in a line. 3, and the orthogonal part 28 is formed by the intersection of the cross lines. Ru. Note that the scale plate 23 is centered at the orthogonal part between the vertical plate material and the horizontal plate material. For example, vertical plates can be connected so that they can swing relative to each other. Fold by swinging in the direction shown by the line arrow and overlapping with the horizontal plate material. It is considered possible.

[0035] Next, the operation of this embodiment will be explained.

[0036] For example, the centering rod 1, the electric drilling drill 2, and the scale of this embodiment The drilling operation using the plate 23 is performed as follows, but as shown in FIG. The open end of the small diameter hole 24 that is drilled and expanded by the object 13 is Three markings 25 are made, and the expansion is made by the orthogonal points of the extension lines of these three markings 25. The central portion for the large diameter hole 26 to be diameterd is already shown.

[0037] First, the operator brings the scale plate 23 into contact with the opening end of the small diameter hole 24 and closes the opening. After positioning the scale plate 23 on the top, move a part of each indicator 27 to each indicator 2. 5, respectively, and lock the scale plate 23 to the opening end of the small diameter hole 24, etc.

[0038] The orthogonal part 28 of the locked scale plate 23 allows the large diameter hole 26 to be expanded in diameter. The center of the image is clearly shown.

[0039] Next, the body of the electric drilling drill 2 with the centering rod 1 attached to the attachment part 12 is placed on the wall. or on the floor 29.

[0040] When installing this, first, the tip of the centering rod 1 and the orthogonal part 28 of the scale plate 23 Position the electric drilling drill body on the wall surface 29 etc. so that the After marking the position of the elongated hole 3 of the base 4 on the wall surface 29, use an electric drill for drilling. Move the main unit to another location.

[0041] Then, as shown in Figure 8, use a hammer drill or similar tool to Drill a hole, drive the hole-in anchor 30 into the hole, and attach the hole-in anchor. Screw the bolt 31 into 30.

[0042] Next, move the electric drilling drill body to the previous position again, and drill the long hole 3 of the base 4. Pass the bolt 31 through the hole, tighten it with the nut 32, and use the electric drill book for drilling. After installing the body on the wall surface 29 etc., screw the level adjustment bolts 5 as appropriate and attach the base. The centering rod 1 is made to protrude from the bottom side of the centering rod 1, and the angle with respect to the horizontal plane is adjusted using the cutter 13. Adjust to suit hole angle.

[0043] At this time, for example, the tip of the centering rod 1 and the orthogonal part 28 of the scale plate 23 may be misaligned. If so, correct the deviation by adjusting the level adjustment bolt 5.

[0044] In this case, in this embodiment, the angle is adjusted using the level adjustment bolt 5. In this case, the horizontal surface of the centering rod 1 or this horizontal surface using the level 16 of the centering rod 1. This can be done based on the measurement of the deviation between the

[0045] In addition, the spirit level 16 is made swingable so as to be positioned coaxially with the centering rod 1 and cross-axially. Since it is designed to stop at a certain position, the spirit level 16 is swung appropriately. Based on the axial and transverse measurements of the centering rod 1 with respect to the horizontal plane, The angle can be adjusted using the level adjustment bolt 5.

[0046] Next, after such adjustment, the scale plate 23 is removed from the wall surface 29 and Remove the centering rod 1 from the mounting part 12 of the electric drilling drill 2 and attach it to the mounting part 12. After attaching the cutter 13 and rotating the cutter 13 by the driving force of the motor 8, Push out the ride block 9 toward the hole to be drilled and move the cutter 13 forward. perforate.

[0047] Through the above-mentioned adjustment, the cutter 13 has the center portion of the large diameter hole 26 expanded to a predetermined position. Since the drill moves forward at the drilling angle, a large diameter hole 26 with excellent accuracy is drilled.

[0048] As described above, according to this embodiment, the drilling work using this type of electric drill 2 for drilling can be performed. It is possible to improve workability and drilling accuracy.

[0049] Above, the invention made by the present inventor was specifically explained based on the examples. The present invention is not limited to the above embodiments, and may be modified without departing from the gist thereof. Needless to say, it can be changed.

[0050] For example, in the centering rod 1 of this embodiment, the spirit level 16 is made swingable. measurement of the axial and transverse directions of the centering rod 1 on the same plane. However, in this invention, for example, centering on the same plane is possible. One level 16 for measuring the axial direction of the rod 1 and measurement in the transverse direction By fixedly arranging other levels 16 on the centering rod 1, the pair of water levels can be Measuring the axial and transverse directions of the centering rod 1 on the same plane using the standard device 16 It is also possible to have a structure where this is possible.

[0051] In addition, in the scale plate 23 of this embodiment, the marking portion 27 is formed in a linear manner. It is formed by the elongated hole 33, and the orthogonal part 28 is formed by the intersection of the cross lines. However, in the present invention, for example, printing is performed on the transparent portion of the scale plate 23. The marking portion 27 may be formed by a straight line drawn by The orthogonal portion 28 is formed by a hole drilled in the scale plate 23. is possible, and the display means are arbitrary.

[0052]

[Effect of the idea]

Among the devices disclosed in this application, the effects obtained by typical ones are briefly explained. A simple explanation is as follows.

[0053] (1) According to the structure of the centering rod of the present invention, the centering rod is attached to the blade attachment part during drilling work. After installing the centering rod and aligning the tip of the centering rod with the center of the hole to be drilled. , install the electric drilling drill body on the wall or floor, and then remove the core from the mounting part. By removing the pull-out rod and attaching a knife to the attached part and drilling a hole, the tip of the knife can be removed. Since the end of the hole is aligned with the center of the hole to be drilled, it improves the workability of the drilling process. Hole accuracy can be improved.

[0054] (2) In the above case, if the structure is equipped with a level, the level and perform centering based on measuring the horizontal plane of the centering rod or its deviation from this horizontal plane. This makes it possible to further improve the workability and accuracy of drilling work.

[0055] (3) In the above case, the level is capable of measuring the centering rod in the axial and transverse directions. If the structure is such that it is possible, measurements in both directions will improve the workability of the drilling operation and Hole accuracy can be further improved.

[0056] (4) According to the structure of the electric drilling drill of the present invention, it is equipped with a centering rod having the above-described structure. This improves workability and accuracy when making adjustments using level adjustment bolts. You can improve your performance.

[0057] (5) In the above case, the opening end of the small diameter hole that is drilled and expanded by the blade multiple markings are placed on the When recognizing the center part for the large diameter hole, the opening end is brought into contact with the opening end of the small diameter hole. Equipped with a scale plate that is used by positioning it on top, and this scale plate has a a plurality of marking portions each at least partially corresponding to the plurality of markings; A perpendicular part of the extension line of a plurality of marking parts is displayed, and the perpendicular part indicates the direction for the large diameter hole. If the structure is such that the center of the When expanding the diameter by making a hole, multiple markings for the small diameter hole and multiple markings on the scale plate. The scale plate is brought into contact with the opening end of the small diameter hole so that the scale plates correspond to each other. By positioning the center of the large diameter hole by the orthogonal part of the scale plate Since the parts can be recognized, the workability and drilling efficiency in such cases can be improved. Hole accuracy can be improved.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a centering rod according to an embodiment of the present invention.

FIG. 2 is a plan view thereof.

FIG. 3 is a sectional view showing the adapter.

FIG. 4 is a side view showing an electric drill for drilling, which is an embodiment of the present invention.

FIG. 5 is a rear view showing the base and support of the electric drilling drill.

FIG. 6 is a plan view showing a scale plate of the electric drilling drill.

FIG. 7 is a plan view showing how the scale plate is used.

FIG. 8 is a side view showing the centering rod, electric drill for drilling, and scale plate in use.

[Explanation of symbols]

1 Centering rod 2 Electric drill for drilling 3 long hole 4 base 5 Level adjustment bolt 6 Pillar 7 Rack gear 8 Motor 9 Slide block 10 Handle 11 Feed handle 12 Mounting part 13 Knives 14 Notch 15 Holder 16 Level 17 Spring 18 ball 19 Recess 20 Female thread part 21 Adapter 21A spring 21B Ball 21C stopper 22 Male thread part 23 Scale plate 24 Small diameter hole 25 Signs 26 Large diameter hole 27 Marking section 28 Orthogonal part 29 Wall surface 30 hole in anchor 31 Zungiri Bolt 32 Nut 33 Slot hole

Claims (5)

[Scope of utility model registration request] 1. A core that is removably protruded from a blade attachment part of an electric drilling drill from which the blade has been removed, and is positioned coaxially with the blade when the blade is attached to the attachment part. Stick out. 2. A centering rod, characterized in that it is provided with a spirit level. 3. The centering rod according to claim 2, wherein the level is capable of measuring the centering rod in an axial direction and a transverse direction. 4. A mounting base, a plurality of level adjustment bolts that are threadably protruded from the bottom side of the base, a support that stands up from the base, and a support that extends in the axial direction of the support. a slide block with a motor mounted so as to be displaceable along the support shaft; and a slide block with a motor attached to the base so as to be displaceable along the column; An electric drill for drilling, characterized in that it is equipped with the centering rod according to claim 1, 2, or 3. 5. A plurality of markings are made at the opening end of the small diameter hole to be drilled and enlarged by the cutter, and a center portion for the large diameter hole to be enlarged is defined by a perpendicular point of an extension line of the plurality of markings. A scale plate is provided which is used by being brought into contact with the opening end of the small diameter hole and positioned above the opening when recognizing the small diameter hole, and when the scale plate is used, at least one mark is attached to each of the plurality of markings. 4. A plurality of marking portions corresponding to the marking portions and a perpendicular portion of an extension line of the plurality of marking portions are displayed, and the central portion for the large diameter hole is recognized by the orthogonal portion. Electric drill for drilling as described.