JP2019000960A - Steel pipe drilling tool - Google Patents

Abstract

To provide a steel pipe drilling tool in which small diameter holes can accurately be drilled without deviation in an outer circumferential surface of a steel pipe.SOLUTION: A steel pipe drilling tool 10 of the present invention comprises a slide drilling plate 20 and a steel pipe cradle 30. The slide drilling plate 20 is formed in a substantially rectangular plate shape, further, slide holes 21 are formed at both ends of the slide drilling plate 20, a drill guide receiving opening 22 is projectingly provided in the central part, and a drill bit guide bush 23 for forming any different drill guide insert hole 24 of the hole diameter in the inner diameter portion of the drill guide receiving opening 22 is attached in a detaching/locking manner. The steel pipe cradle 30 is configured such that a substantially trapezoidal member where a cross-sectional shape forms a V-shaped recess is extended in a longitudinal direction of a placing steel pipe P and is formed in a shape of receiving the steel pipe P from the lower part. Further, means are adopted for setting up a slide fixing pin 31 oppositely provided across the longitudinal center line of the steel pipe P in the upper surface of the steel pipe cradle 30.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a steel pipe drilling tool that can accurately drill a small-diameter hole on an outer peripheral surface of a steel pipe without shifting.

  As a conventional means for making a small-diameter hole in the outer peripheral surface of a steel pipe, “a jig for drilling a steel pipe in a magnetic drilling machine” (Patent Document 1) has been proposed which uses a magnetic drilling machine to facilitate drilling work into a steel pipe. It is a known technique.

  However, the proposal of the “steel drilling jig for a magnetic drilling machine” is based on a magnet in which a magnet coil is wound around an iron core, a stand attached to the upper part of the magnet, and an upward and downward movable attachment to the stand. In a magnetic drilling machine including an electric drill, a jig having saddle-shaped notches at both ends of a rectangular shape formed so as to be placed on a steel pipe as a workpiece, By proposing a jig for drilling steel pipes using a magnetic drilling machine that is configured to include a plurality of bolts that are attached to the jig and support the magnet by placing the magnet above the hollow portion of the jig. Therefore, this proposal is not easy to use because it is necessary to reset the steel pipe to a fixed magnetic drilling machine every time it is drilled. And on it is difficult move because it is heavy, work site has been difficult that drilling operations in steel pipe installation site from being limited to the installable place of the magnetic base drilling.

  In addition, as a steel pipe drilling tool using a hand drill that is widely used, it is necessary to check whether there are wires, cables, etc. in the steel pipe buried in the ground or piped on the ground. A hole is made in the outer periphery, and the inside is looked into from the hole. When making a hole in the outer periphery of the steel pipe, a “steel pipe drilling tool” is made so as not to damage the electric wire or cable in the steel pipe (Patent Document-2). ) Has been proposed and is a known technique.

  However, the proposal of such a “steel pipe drilling tool” is that a stopper is projected from the lower end of a cylindrical blade for drilling that can be attached to and detached from an electric drill to the upper part of the outer periphery of a certain length, and the outer circumference of the steel pipe can be crowned freely in an arc shape. The guide body is provided separately, and a through hole is formed in the approximate center of the guide body, and the inner diameter of the through hole is slightly larger than the outer diameter of the cylindrical blade of the drilling blade for drilling and smaller than the outer diameter of the stopper portion. And a steel pipe drilling jig with a structure in which the length from the lower end of the cylindrical blade to the stopper is substantially equal to the length of the through hole of the guide body plus the thickness of the steel pipe to be drilled. In this proposal, the arcuate guide body that can be crowned must be wound around the outer periphery of the steel pipe to be drilled, and the workability is extremely poor in order to continuously drill a large number of holes. There was a problem.

  The present applicant pays attention to the current situation where skill in drilling work is required in addition to ensuring workability and safety in the conventional method of drilling steel pipes, and who uses a hand drill that is generally popular However, based on the idea that a small-diameter hole cannot be easily drilled accurately without slipping on the outer peripheral surface of the steel pipe, a steel pipe drilling can be drilled accurately without misaligning the small-diameter hole on the outer peripheral surface of the steel pipe. The tool is developed and the proposal of the “steel pipe drilling tool” in the present invention is reached.

JP-A-5-138416 Japanese Utility Model Publication No. 7-027714

  In view of the above problems, an object of the present invention is to provide a steel pipe drilling tool that can accurately drill a small-diameter hole on the outer peripheral surface of a steel pipe without shifting.

  The present invention is made in order to solve the above-mentioned problems, and the steel pipe drilling tool in the present invention is a steel pipe drilling tool that can accurately drill a small-diameter hole on the outer peripheral surface of the steel pipe, and the steel pipe drilling tool The drilling tool is composed of a slide drilling plate and a steel pipe cradle. The slide drilling plate is formed in a substantially rectangular plate shape, a slide hole is formed at both ends, and a drill guide is formed at the center. The steel pipe cradle is provided with a drill blade guide bush provided in a projecting manner, and a drill blade guide bush for forming an arbitrary drill guide insertion hole having a different hole diameter in the inner diameter portion of the drill guide receptacle portion. Is a substantially trapezoidal member that forms a V-shaped recess in the cross-sectional shape, and extends in the longitudinal direction of the steel pipe to be placed to receive the steel pipe from below. The slide fixing pin is provided upright across the center line in the hand direction, and in use, the slide hole of the slide drilling plate is inserted into the slide fixing pin of the steel pipe cradle and the slide The drill guide of the drill blade guide bush with the center portion of the drilling plate in contact with the topmost portion of the steel pipe formed with an arbitrary outer diameter placed on the V-shaped recess of the steel pipe cradle Take a means to make a hole by sliding the drill blade inserted in the insertion hole up and down.

  Further, the steel pipe drilling tool in the present invention is a steel pipe drilling tool that can accurately drill a small-diameter hole on the outer peripheral surface of the steel pipe, and the steel pipe drilling tool includes a slide rotation drilling plate, a steel pipe cradle, and the like. The slide rotation drilling plate is formed in a circular plate shape, a plurality of slide holes are formed in the outer peripheral portion, and a plurality of drill guide receiving portions are projected on the inner peripheral portion. A drill blade guide bush for forming an arbitrary drill guide insertion hole having a different hole diameter is detachably attached to the inner diameter portion of the drill guide receiving port portion, and the steel pipe cradle has a V-shaped cross section. A substantially trapezoidal member that forms a concave portion extends in the longitudinal direction of the steel pipe to be placed to form a shape for receiving the steel pipe from below, and further, the upper surface sandwiches the longitudinal center line of the steel pipe The slide fixing pin is provided upright, and in use, the slide hole of the slide rotation hole drilling plate is inserted into the slide fixing pin of the steel pipe cradle, and the drill guide receptacle of the slide rotation plate Is inserted into the drill guide insertion hole of the drill blade guide bush in a state where it is in contact with the topmost part of the steel pipe formed with an arbitrary outer diameter dimension placed in the V-shaped recess of the steel pipe cradle Take a means of drilling by sliding the blade up and down.

  According to the steel pipe drilling tool of the present invention, the steel pipe is formed in a shape to be received from below by the cradle steel pipe forming the V-shaped recess, so that the steel pipe is stably held and processed with a small diameter. There is an excellent effect that the hole is accurately drilled with respect to the main axis direction of the steel pipe.

  Moreover, according to the steel pipe drilling tool of the present invention, the drilling means is excellent in that a small-diameter hole can be accurately drilled on the outer peripheral surface of the steel pipe using a manual hand drill or a fixed drilling machine. There is an effect.

  Moreover, according to the steel pipe drilling tool of the present invention, by preparing a plurality of slide drilling plates and slide rotation drilling plates having various steel pipe diameters, the target small-diameter hole can be easily and accurately aligned with the main axis direction of the steel pipe. It has an excellent effect of being opened.

  Moreover, according to the steel pipe drilling tool of the present invention, an excellent effect that it can also be used as a drilling tool for drilling a small-diameter hole in the outer peripheral surface of a PVC pipe other than a steel pipe, pottery pipe, glass pipe, round bar wood, etc. Play.

  Moreover, according to the steel pipe drilling tool of the present invention, a large number of holes can be easily made in a steel pipe by DIY work by a general user, so that a snow melting device using hot water and a steel pipe in the snow country can be easily and inexpensively. Excellent effect.

  In addition, according to the steel pipe drilling tool of the present invention, a replacement drill guide bush can be inserted into the drill guide bush insertion hole to easily form a small-diameter hole having a different size, and the steel pipe cradle itself can be processed. There is an excellent effect that it can be formed of an easy and inexpensive synthetic resin material.

It is explanatory drawing which shows embodiment in the steel pipe drilling tool of this invention. (Example 1) It is explanatory drawing which shows the use condition in the steel pipe drilling tool of this invention. It is explanatory drawing which shows other embodiment in the steel pipe drilling tool of this invention. (Example 2) It is explanatory drawing which shows the other use condition in the steel pipe drilling tool of this invention.

  The steel pipe drilling tool 10 according to the present invention is a steel pipe drilling tool 10 that can accurately drill a small-diameter hole H on the outer peripheral surface of the steel pipe P. The steel pipe drilling tool 10 includes a slide drilling plate 20, The slide drilling plate 20 is formed in a substantially rectangular plate shape, the slide holes 21 are formed at both ends, and the drill guide receiving port 22 is projected from the center. At the same time, a drill blade guide bush 23 for forming an arbitrary drill guide insertion hole 24 having a different hole diameter is detachably attached to the inner diameter portion of the drill guide receiving port portion 22, and the steel pipe cradle 30 has a sectional view. A substantially trapezoidal member that forms a V-shaped recess extends in the longitudinal direction of the steel pipe P to be placed, and forms a shape for receiving the steel pipe P from below. The slide fixing pins 31 are provided so as to be opposed to each other across the center line in the hand direction. During use, the slide holes 21 of the slide drilling plate 20 are inserted into the slide fixing pins 31 of the steel pipe cradle 30. In the state where the central portion of the slide drilling plate 20 is in contact with the topmost portion of the steel pipe P formed with an arbitrary outer diameter placed on the V-shaped recess of the steel pipe cradle 30, the drill blade guide The greatest feature is that the drill blade C inserted into the drill guide insertion hole 24 of the bush 23 is slid up and down to make a hole. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In addition, the steel pipe drilling tool 10 of the present invention is not limited to the embodiments described below, and is appropriately within the scope of the technical idea of the present invention, that is, within the range of the shape and size capable of exhibiting the same function and effect. Can be changed.

FIG. 1 is an explanatory view showing an embodiment of the steel pipe drilling tool of the present invention.
Fig.1 (a) is a perspective view which shows the use condition in the steel pipe drilling tool 10 of this invention.
FIG.1 (b) is a perspective view which shows the assembly state in the steel pipe drilling tool 10 of this invention.
The steel pipe drilling tool 10 of the present invention includes a slide drilling plate 20 and a steel pipe cradle 30. The slide drilling plate 20 is formed in a substantially rectangular plate shape, and slide holes 21 are formed at both ends. In addition, a drill guide receiving portion 22 is provided at the center portion, and a drill blade guide bush 23 for forming an arbitrary drill guide insertion hole 24 having a different hole diameter is formed in the inner diameter portion of the drill guide receiving portion 22. The steel pipe cradle 30 has a substantially trapezoidal member that forms a recess having a V-shaped cross section and extends in the longitudinal direction of the steel pipe P to be placed. It is formed in a shape to be received, and is further formed in a shape in which a slide fixing pin 31 is provided on the upper surface so as to be opposed to each other across the center line in the longitudinal direction of the steel pipe P.

  The slide drilling plate 20 is formed in a substantially rectangular plate shape, and slide holes 21 are formed at both ends, and a drill guide receiving port 22 is formed at the center so as to project. Used by being pressed from above.

  The drill guide receiving portion 22 is formed in a shape that allows a drill blade guide bush 23 that forms an arbitrary drill guide insertion hole 24 having a different hole diameter to be attached to the inner diameter portion of the receiving portion so as to be attachable and detachable.

  Moreover, the slide function by the slide fixing pin 31 and the slide hole 21 can also be achieved by various other slide structures.

  The drill blade guide bush 23 is made of a high-strength resin material made of metal, hardened steel, gears, or the like, and a plurality of drill blade guide bushes 23 are prepared according to the outer diameter of the drill blade C of the hand drill D used. In use, they are arbitrarily selected and formed into a shape that is inserted into the drill guide receiving port portion 22, and the outer diameter portion is formed into a shape that is inserted and stopped into the inner diameter portion of the drill guide receiving port portion 22. The part is a replacement bushing in which a drill guide insertion hole 24 in which an outer diameter of a drill blade C corresponding to a target small-diameter hole H can slide up and down is formed.

  Incidentally, as means for stopping the insertion of the drill blade guide bush 23 into the drill guide receiving part 22, various means such as a fitting type, a drop-in type, a press-fitting type, an insertion type, a screwing type and a sliding type are used. It can be inserted and stopped freely.

  The drill guide insertion hole 24 is a guide hole in which the outer diameter of the drill blade C slides up and down, and the deepest position is in close contact with the outer peripheral surface of the steel pipe P, so that the drill blade C in the drilling operation of the steel pipe P is performed. Plays a role in preventing slipping.

  The steel pipe cradle 30 is a steel pipe P on which a substantially trapezoidal member formed of a combination of L-shaped steel and C-shaped steel forming a V-shaped recess, wood, synthetic resin molded article, etc. is placed. The steel pipe P is formed so as to receive the steel pipe P from below by extending in the longitudinal direction of the steel pipe, and further, the upper surface thereof is provided with a slide fixing pin 31 provided facing the center line in the longitudinal direction of the steel pipe P. It is formed.

  The steel pipe P is intended for steel pipe pipes for scaffolding, water pipes, gas pipes, steel pipes for cable piping, etc., and PVC pipes, pottery pipes, glass pipes, round bar woods, etc. are used as others.

  The steel pipe drilling tool 10 of the present invention configured as described above can be drilled safely and easily without the drill blade C slipping on the outer periphery of the steel pipe P by being detachably attached to the steel pipe P. In addition, it is possible to provide the steel pipe drilling tool 10 that can be easily drilled even if the drilling tool is a manual hand drill D or a fixed drilling machine.

FIG. 2 is a cross-sectional explanatory view showing a drilling operation state in the steel pipe drilling tool of the present invention.
《Explanation of work situation》
(1) A steel pipe P from which a small-diameter hole H is to be drilled and a steel pipe drilling tool 10 of the present invention are prepared.
(2) The steel pipe P is placed in the V-shaped recess of the steel pipe cradle 30 of the steel pipe drilling tool 10 of the present invention.
(3) Insert the slide hole 21 of the slide drilling plate 20 into the slide fixing pin 31 of the steel pipe cradle 30.
(4) The center portion of the slide hole drilling plate 20 is brought into contact with the topmost portion of the steel pipe P placed on the V-shaped recess of the steel pipe cradle 30.
(5) Insert the drill blade C of the hand drill D into the drill guide insertion hole 24 of the drill blade guide bush 23 with the steel pipe P held down from above with one hand.
(6) The drill blade C of the hand drill D is slid up and down along the drill guide insertion hole 24 of the drill blade guide bush 23 to make a small-diameter hole H on the outer peripheral surface of the steel pipe P.
(7) The small diameter hole H is made in the outer peripheral surface of the steel pipe P sequentially along the cracks while shifting the steel pipe P (rotation and feeding).
(8) After removing the slide drilling plate 20 from the slide fixing pin 31 of the steel pipe cradle 30, the steel pipe P placed on the steel pipe cradle 30 is removed.
(9) Complete.

  The steel pipe drilling tool 10 of the present invention configured as described above is configured such that the drill blade C does not slide with respect to the outer peripheral portion of the steel pipe P by detachably attaching the steel pipe cradle 30 to the outer peripheral surface of the steel pipe P. Therefore, it is possible to provide a steel pipe drilling tool 10 that can be drilled safely and easily, and can be easily drilled even if the drilling tool is a manual hand drill D or a fixed drilling machine.

FIG. 3 is an explanatory view showing another embodiment of the steel pipe drilling tool of the present invention.
Fig.3 (a) is a perspective view which shows the use condition in the steel pipe drilling tool 10 of this invention.
FIG.3 (b) is a perspective view which shows the assembly state in the steel pipe drilling tool 10 of this invention.
The steel pipe drilling tool 10 of the present invention includes a slide rotary drilling plate 40 and a steel pipe cradle 30. The slide rotary drilling plate 40 is formed in a circular plate shape, and a plurality of slide holes are formed in the outer periphery. 21, a plurality of drill guide receiving ports 22 projecting from the inner peripheral portion, and a drill blade guide for forming an arbitrary drill guide insertion hole 24 having a different hole diameter at the inner diameter portion of the drill guide receiving port portion 22 The bush 23 is detachably attached and locked, and the steel pipe cradle 30 has a substantially trapezoidal member that forms a recess with a V-shaped cross section extending in the longitudinal direction of the steel pipe P to be placed. The steel pipe P is formed in a shape for receiving from below, and further, the upper surface is formed in a shape in which a slide fixing pin 31 provided so as to face the center line in the longitudinal direction of the steel pipe P is provided upright.

  The slide rotation hole drilling plate 40 is formed in a circular plate shape, a plurality of slide holes 21 are formed on the outer peripheral portion, and a plurality of drill guide receiving ports 22 are projected on the inner peripheral portion. A drill blade guide bush 23 for forming an arbitrary drill guide insertion hole 24 having a different hole diameter is formed in the inner diameter portion of the receiving port portion 22 so that the drill blade guide bush 23 can be attached / detached / engaged freely. Used by being pressed from.

  As shown in the blow-out portion of FIG. 3 (a), the slide rotation hole drilling plate 40 is made of metal, hardened steel, high strength resin material used for gears, etc., and has a predetermined thickness. As a result, the drill guide insertion hole 24 can be directly drilled in the slide rotation hole drilling plate 40 and the drill guide receiving portion 22 can be omitted.

  The drill guide receptacle 22 has a shape in which a drill blade guide bush 23 for forming an arbitrary drill guide insertion hole 24 having a different hole diameter can be detachably attached to and engaged with the inner diameter of the drill guide receptacle 22. It is formed.

  Moreover, the slide function by the slide fixing pin 31 and the slide hole 21 can also be achieved by various other slide structures.

  The drill blade guide bush 23 is made of a high-strength resin material made of metal, hardened steel, gears, or the like, and a plurality of drill blade guide bushes 23 are prepared according to the outer diameter of the drill blade C of the hand drill D used. In use, they are arbitrarily selected and formed into a shape that is inserted into the drill guide receiving port portion 22, and the outer diameter portion is formed into a shape that is inserted and stopped into the inner diameter portion of the drill guide receiving port portion 22. The part is a replacement bushing in which a drill guide insertion hole 24 in which an outer diameter of a drill blade C corresponding to a target small-diameter hole H can slide up and down is formed.

  Incidentally, as means for stopping the insertion of the drill blade guide bush 23 into the drill guide receiving part 22, various means such as a fitting type, a drop-in type, a press-fitting type, an insertion type, a screwing type and a sliding type are used. It can be inserted and stopped freely.

  The drill guide insertion hole 24 is a guide hole in which the outer diameter of the drill blade C slides up and down, and the deepest position is in close contact with the outer peripheral surface of the steel pipe P, so that the drill blade C in the drilling operation of the steel pipe P is performed. Plays a role in preventing slipping.

  The steel pipe cradle 30 is a steel pipe P on which a substantially trapezoidal member formed of a combination of L-shaped steel and C-shaped steel forming a V-shaped recess, wood, synthetic resin molded article, etc. is placed. The steel pipe P is formed in a shape that extends in the longitudinal direction to receive the steel pipe P from below, and the upper surface is provided with a slide fixing pin 31 that is provided facing the center line in the longitudinal direction of the steel pipe P. Formed.

  The steel pipe P is a steel pipe P pipe for scaffolding, a water pipe, a gas pipe, a steel pipe P for cable piping, and the like, and a PVC pipe, a ceramic pipe, a glass pipe, a round bar wood, and the like are used as others.

  The steel pipe drilling tool 10 of the present invention configured as described above can be drilled safely and easily without the drill blade C slipping on the outer periphery of the steel pipe P by being detachably attached to the steel pipe P. In addition, it is possible to provide the steel pipe drilling tool 10 that can be easily drilled even if the drilling tool is a manual hand drill D or a fixed drilling machine.

FIG. 4 is a cross-sectional explanatory view showing a drilling operation state in the steel pipe drilling tool of the present invention.
《Explanation of work situation》
(1) A steel pipe P from which a small-diameter hole H is to be drilled and a steel pipe drilling tool 10 of the present invention are prepared.
(2) The steel pipe P is placed in the V-shaped recess of the steel pipe cradle 30 of the steel pipe drilling tool 10 of the present invention.
(3) Insert the slide hole 21 of the slide rotation hole drilling plate 40 into the slide fixing pin 31 of the steel pipe cradle 30.
(4) A drill guide insertion hole 24 corresponding to a small-diameter hole H intended for rotating the slide rotation hole drilling plate 40 is formed at the top of the steel pipe P placed on the V-shaped recess of the steel pipe cradle 30. Make contact.
(5) Insert the drill blade C of the hand drill D into the drill guide insertion hole 24 of the drill blade guide bush 23 with the steel pipe P held down from above with one hand.
(6) The drill blade C of the hand drill D is slid up and down along the drill guide insertion hole 24 of the drill blade guide bush 23 to make a small-diameter hole H on the outer peripheral surface of the steel pipe P.
(7) The small diameter hole H is made in the outer peripheral surface of the steel pipe P sequentially along the cracks while shifting the steel pipe P (rotation and feeding).
(8) After removing the slide rotation drilling plate 40 from the slide fixing pin 31 of the steel pipe cradle 30, the steel pipe P placed on the steel pipe cradle 30 is removed.
(9) Complete.

  The steel pipe drilling tool 10 of the present invention configured as described above is configured such that the drill blade C does not slide with respect to the outer peripheral portion of the steel pipe P by detachably attaching the steel pipe cradle 30 to the outer peripheral surface of the steel pipe P. Therefore, it is possible to provide a steel pipe drilling tool 10 that can be drilled safely and easily, and can be easily drilled even if the drilling tool is a manual hand drill D or a fixed drilling machine.

  The steel pipe drilling tool of the present invention can be used as a steel pipe drilling tool that can make a small-diameter hole on the outer peripheral surface of a steel pipe, and as a drilling tool for PVC pipes, pottery pipes, glass pipes, round bar wood, etc. Therefore, it is considered that the industrial applicability of the “steel pipe drilling tool” of the present invention is extremely large.

DESCRIPTION OF SYMBOLS 10 Steel pipe drilling tool 20 Slide drilling plate 21 Slide hole 22 Drill guide receiving part 23 Drill blade guide bush 24 Drill guide insertion hole 30 Steel pipe receiving base 31 Slide fixing pin 40 Slide rotation drilling plate P Steel pipe H Small diameter hole D Hand drill C Drill Blade K Kekiki wire

The present invention is made in order to solve the above-mentioned problems, and the steel pipe drilling tool in the present invention is a steel pipe drilling tool that can accurately drill a small-diameter hole on the outer peripheral surface of the steel pipe, and the steel pipe drilling tool The drilling tool is composed of a slide drilling plate and a steel pipe cradle, the slide drilling plate is formed in a substantially rectangular plate shape, and further , slide holes are formed at both ends of the slide drilling plate , A drill guide receiving port is provided at the center, and a drill blade guide bush that forms an arbitrary drill guide insertion hole with a different hole diameter is mounted on the inner diameter of the drill guide receiving port so that it can be attached and detached. The steel pipe cradle is configured such that a substantially trapezoidal member forming a recess having a V-shaped cross section extends in the longitudinal direction of the steel pipe to be placed and receives the steel pipe from below. Formed in news on the said steel pipe cradle upper surface become erected slide fixing pin provided on opposite sides of the longitudinal center line of the steel pipe, in use, the sliding hole of the sliding drilling plate Is inserted into the slide fixing pin of the steel pipe cradle, and the center of the slide hole drilling plate is the outermost dimension of the steel pipe formed with an arbitrary outer diameter placed on the V-shaped recess of the steel pipe cradle. In a state in which the drill blade is in contact with the top, the drill blade inserted into the drill guide insertion hole of the drill blade guide bush is slid up and down to make a hole.

Further, the steel pipe drilling tool in the present invention is a steel pipe drilling tool that can accurately drill a small-diameter hole on the outer peripheral surface of the steel pipe, and the steel pipe drilling tool includes a slide rotation drilling plate, a steel pipe cradle, and the like. The slide rotation drilling plate is formed in a circular plate shape, and a plurality of slide holes are formed in the outer periphery of the slide rotation drilling plate, and a plurality of drill guides are formed in the inner periphery. The steel pipe cradle is provided with a drill blade guide bush provided in a projecting manner, and a drill blade guide bush for forming an arbitrary drill guide insertion hole having a different hole diameter in the inner diameter portion of the drill guide receptacle portion. is a substantially trapezoidal member having a cross section to form a V-shaped recess, formed in a shape to receive the steel pipe and extending in the longitudinal direction of the steel pipe to be placed from below, further wherein The serial steel cradle upper surface become erected slide fixing pin provided on opposite sides of the longitudinal center line of the steel pipe, in use, the steel pipe cradle slides hole of the slide rotary drilling plate The slide guide pin of the slide rotating plate is abutted against the topmost portion of the steel pipe formed with an arbitrary outer diameter placed in the V-shaped recess of the steel pipe cradle. In this state, the drill blade inserted into the drill guide insertion hole of the drill blade guide bush is slid up and down to make a hole.

The steel pipe drilling tool 10 according to the present invention is a steel pipe drilling tool 10 that can accurately drill a small-diameter hole H on the outer peripheral surface of the steel pipe P. The steel pipe drilling tool 10 includes a slide drilling plate 20, The slide drilling plate 20 is formed in a substantially rectangular plate shape, and further , slide holes 21 are formed at both ends of the slide drilling plate 20, and a drill guide receiving port is provided at the center. A steel pipe is formed by projecting a portion 22 and detachably attaching a drill blade guide bush 23 for forming an arbitrary drill guide insertion hole 24 having a different hole diameter to the inner diameter portion of the drill guide receiving portion 22. The cradle 30 is a shape in which a substantially trapezoidal member forming a concave portion having a V-shaped cross section extends in the longitudinal direction of the steel pipe P to be placed and receives the steel pipe P from below. Formed, made by further standing the slide fixing pin 31 provided on opposite sides of the longitudinal center line of the steel pipe P on the upper surface of the steel pipe cradle 30, in use, the sliding of the slide drilling plate 20 The hole 21 is inserted into the slide fixing pin 31 of the steel pipe cradle 30, and the center portion of the slide drilling plate 20 is formed with an arbitrary outer diameter placed on the V-shaped recess of the steel pipe cradle 30. The most characteristic feature is that the drill blade C inserted into the drill guide insertion hole 24 of the drill blade guide bush 23 is slid up and down to make a hole while in contact with the top of the steel pipe P. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an explanatory view showing an embodiment of the steel pipe drilling tool of the present invention.
Fig.1 (a) is a perspective view which shows the use condition in the steel pipe drilling tool 10 of this invention.
FIG.1 (b) is a perspective view which shows the assembly state in the steel pipe drilling tool 10 of this invention.
The steel pipe drilling tool 10 of the present invention is composed of a slide drilling plate 20 and a steel pipe cradle 30. The slide drilling plate 20 is formed in a substantially rectangular plate shape, and is further formed at both ends of the slide drilling plate 20. Forms a slide hole 21, and a drill guide receiving portion 22 projects from the center portion, and a drill blade guide for forming an arbitrary drill guide insertion hole 24 having a different hole diameter at the inner diameter portion of the drill guide receiving portion 22. The bush 23 is detachably attached and locked, and the steel pipe cradle 30 has a substantially trapezoidal member that forms a recess with a V-shaped cross section extending in the longitudinal direction of the steel pipe P to be placed. the steel pipe P is formed in a shape to receive the lower, further on the upper surface of the steel pipe cradle 30 provided upright slide fixing pin 31 provided on opposite sides of the longitudinal center line of the steel pipe P Te It is formed into a shape.

The slide hole drilling plate 20 is formed in a substantially rectangular plate shape. Further , slide hole 21 is formed at both ends of the slide hole drilling plate 20, and a drill guide receiving port 22 is formed at the center. At the time of drilling, it is used by being pressed from above.

The steel pipe cradle 30 is a steel pipe P on which a substantially trapezoidal member formed of a combination of L-shaped steel and C-shaped steel forming a V-shaped recess, wood, synthetic resin molded article, etc. is placed. longitudinally and extend to form a steel pipe P in a shape to receive from below, further the slide fixing pin 31 provided on opposite sides of the longitudinal center line of the steel pipe P on the upper surface of the steel pipe cradle 30 It is formed in a standing shape.

FIG. 3 is an explanatory view showing another embodiment of the steel pipe drilling tool of the present invention.
Fig.3 (a) is a perspective view which shows the use condition in the steel pipe drilling tool 10 of this invention.
FIG.3 (b) is a perspective view which shows the assembly state in the steel pipe drilling tool 10 of this invention.
The steel pipe drilling tool 10 of the present invention is composed of a slide rotary drilling plate 40 and a steel pipe cradle 30, and the slide rotary drilling plate 40 is formed in a circular plate shape, and further the outer periphery of the slide rotary drilling plate 40. A plurality of slide holes 21 are formed in the portion, and a plurality of drill guide receiving portions 22 are projected from the inner peripheral portion, and arbitrary drill guide insertion holes having different hole diameters are formed in the inner diameter portion of the drill guide receiving portion 22. A steel blade P is formed by mounting a drill blade guide bushing 23 that forms a detachable / engageable 24, and a steel pipe receiving base 30 on which a substantially trapezoidal member that forms a V-shaped recess is mounted. Sly longitudinally and extend to form a steel pipe P in a shape to receive the lower, provided on opposite sides of the longitudinal center line of the steel pipe P is further on the upper surface of the steel pipe cradle 30 It formed a fixing pin 31 to the upright shape.

The slide rotation hole drilling plate 40 is formed in a circular plate shape. Further , a plurality of slide holes 21 are formed on the outer periphery of the slide rotation hole drilling plate 40, and a plurality of drill guide receptacles 22 are projected on the inner periphery. And a drill blade guide bush 23 for forming an arbitrary drill guide insertion hole 24 having a different hole diameter in the inner diameter portion of the drill guide receiving portion 22 is formed in a shape that can be detachably attached and locked. At the time of drilling work, it is pressed from above and used.

The present invention is made in order to solve the above-mentioned problems, and the steel pipe drilling tool in the present invention is a steel pipe drilling tool that can accurately drill a small-diameter hole on the outer peripheral surface of the steel pipe, and the steel pipe drilling tool The drilling tool is composed of a slide drilling plate and a steel pipe cradle, the slide drilling plate is formed in a substantially rectangular plate shape, and further , slide holes are formed at both ends of the slide drilling plate , A drill guide receiving hole is provided on the part, and a drill blade guide bush for forming an arbitrary drill guide insertion hole having a different hole diameter is detachably mounted on the inner diameter of the drill guide receiving hole. The steel pipe cradle is configured so that a substantially trapezoidal member having a V-shaped concave section extends in the longitudinal direction of the steel pipe to be placed and receives the steel pipe from below. Formed, become erected further the steel pipe cradle slide fixing pin provided on opposite sides of the longitudinal center line of the steel pipe on the upper surface, the in use, the sliding hole of the sliding drilling plate Insert into the slide fixing pin of the steel pipe cradle, and at the top of the steel pipe formed with an arbitrary outer diameter placed on the V-shaped recess of the steel pipe cradle with the center part of the slide drilling plate In the abutting state, a means is adopted in which the drill blade inserted into the drill guide insertion hole of the drill blade guide bush is slid up and down to make a hole.

Further, the steel pipe drilling tool in the present invention is a steel pipe drilling tool that can accurately drill a small-diameter hole on the outer peripheral surface of the steel pipe, and the steel pipe drilling tool includes a slide rotation drilling plate, a steel pipe cradle, and the like. The slide rotation drilling plate is formed in a circular plate shape, and further , a plurality of slide holes are formed on the outer periphery of the slide rotation drilling plate, and a plurality of drill guide receiving ports are formed on the inner periphery. And a drill blade guide bush for forming an arbitrary drill guide insertion hole having a different hole diameter in the inner diameter portion of the drill guide receiving port portion, and a detachable / engageable attachment of the drill guide bush. , a substantially trapezoidal member having a cross section to form a V-shaped recess, formed in a shape to receive the steel pipe and extending in the longitudinal direction of the steel pipe to be placed from below, further wherein The tube cradle upper surface become erected slide fixing pin provided on opposite sides of the longitudinal center line of the steel pipe, in use, the sliding hole of the sliding rotation drilling plate the steel tube cradle While being inserted into the slide fixing pin, the drill guide receiving portion of the slide rotating plate was brought into contact with the topmost portion of the steel pipe formed with an arbitrary outer diameter placed on the V-shaped recess of the steel pipe cradle. In this state, the drill blade inserted into the drill guide insertion hole of the drill blade guide bush is slid up and down to make a hole.

The steel pipe drilling tool 10 according to the present invention is a steel pipe drilling tool 10 that can accurately drill a small-diameter hole H on the outer peripheral surface of the steel pipe P. The steel pipe drilling tool 10 includes a slide drilling plate 20, The slide hole drilling plate 20 is formed in a substantially rectangular plate shape, slide holes 21 are formed at both ends of the slide hole drilling plate 20, and a drill guide receiving part is provided at the center part. And a drill blade guide bush 23 for forming an arbitrary drill guide insertion hole 24 having a different hole diameter in the inner diameter portion of the drill guide receiving port portion 22 is detachably mounted. The base 30 has a shape in which a substantially trapezoidal member forming a recess having a V-shaped cross section extends in the longitudinal direction of the steel pipe P to be placed and receives the steel pipe P from below. Form, further on the upper surface of the steel pipe cradle 30 comprises erected the slide fixing pin 31 provided on opposite sides of the longitudinal center line of the steel pipe P, in use, the sliding hole of the sliding drilling plate 20 21 is inserted into the slide fixing pin 31 of the steel pipe cradle 30 and the center portion of the slide hole drilling plate 20 is formed with an arbitrary outer diameter placed on the V-shaped recess of the steel pipe cradle 30. The most characteristic feature is that the drill blade C inserted in the drill guide insertion hole 24 of the drill blade guide bush 23 is slid up and down to make a hole while in contact with the topmost portion of P. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an explanatory view showing an embodiment of the steel pipe drilling tool of the present invention.
Fig.1 (a) is a perspective view which shows the use condition in the steel pipe drilling tool 10 of this invention.
FIG.1 (b) is a perspective view which shows the assembly state in the steel pipe drilling tool 10 of this invention.
The steel pipe drilling tool 10 of the present invention is composed of a slide drilling plate 20 and a steel pipe cradle 30, and the slide drilling plate 20 is formed in a substantially rectangular plate shape, and is further formed at both ends of the slide drilling plate 20. A drill hole guide bush is formed in which a slide hole 21 is formed, and a drill guide receiving hole 22 projects from the center, and an arbitrary drill guide insertion hole 24 having a different hole diameter is formed in the inner diameter of the drill guide receiving hole 22. The steel pipe pedestal 30 has a substantially trapezoidal member that forms a recess having a V-shaped cross section and extends in the longitudinal direction of the steel pipe P to be placed. form a steel pipe P is formed in a shape to receive the lower, further on the upper surface of the steel pipe cradle 30 provided upright slide fixing pin 31 provided on opposite sides of the longitudinal center line of the steel pipe P It is formed on.

The slide hole drilling plate 20 is formed in a substantially rectangular plate shape, further formed with slide holes 21 at both ends of the slide hole drilling plate 20, and formed into a shape projecting a drill guide receiving port 22 at the center, At the time of drilling work, it is pressed from above and used.

The steel pipe cradle 30 is a steel pipe P on which a substantially trapezoidal member formed of a combination of L-shaped steel and C-shaped steel forming a V-shaped recess, wood, synthetic resin molded article, etc. is placed. The steel pipe P is formed in a shape to receive the steel pipe P from below, and a slide fixing pin 31 is provided on the upper surface of the steel pipe pedestal 30 so as to face the center line in the longitudinal direction of the steel pipe P. It is formed in the set shape.

FIG. 3 is an explanatory view showing another embodiment of the steel pipe drilling tool of the present invention.
Fig.3 (a) is a perspective view which shows the use condition in the steel pipe drilling tool 10 of this invention.
FIG.3 (b) is a perspective view which shows the assembly state in the steel pipe drilling tool 10 of this invention.
The steel pipe drilling tool 10 of the present invention is composed of a slide rotary drilling plate 40 and a steel pipe cradle 30, and the slide rotary drilling plate 40 is formed in a circular plate shape, and the outer periphery of the slide rotary drilling plate 40. A plurality of slide holes 21 are formed on the inner peripheral portion, and a plurality of drill guide receiving hole portions 22 project from the inner peripheral portion, and an arbitrary drill guide insertion hole 24 having a different hole diameter is formed on the inner diameter portion of the drill guide receiving port portion 22. The steel pipe pedestal 30 has a substantially trapezoidal member that forms a recess having a V-shaped cross section. the steel pipe P is formed in a shape to receive the downwardly extending longitudinally sliding solid provided on opposite sides of the longitudinal center line of the steel pipe P is further an upper surface of the steel pipe cradle 30 It formed a pin 31 to the upright shape.

The slide rotation hole drilling plate 40 is formed in a circular plate shape. Further , a plurality of slide holes 21 are formed on the outer periphery of the slide rotation hole drilling plate 40, and a plurality of drill guide receiving portions 22 are provided on the inner periphery. At the same time, a drill blade guide bush 23 for forming an arbitrary drill guide insertion hole 24 having a different hole diameter is formed in an inner diameter portion of the drill guide receiving port portion 22 so that the drill blade guide bush 23 can be detachably attached and locked. During work, it is pressed from above and used.

The present invention is made in order to solve the above-mentioned problems, and the steel pipe drilling tool in the present invention is a steel pipe drilling tool that can accurately drill a small-diameter hole on the outer peripheral surface of the steel pipe, and the steel pipe drilling tool The drilling tool is composed of a slide drilling plate and a steel pipe cradle, the slide drilling plate is formed in a substantially rectangular plate shape, and further , slide holes are formed at both ends of the slide drilling plate , A drill guide receiving hole is provided on the part, and a drill blade guide bush for forming an arbitrary drill guide insertion hole having a different hole diameter is detachably mounted on the inner diameter of the drill guide receiving hole. The steel pipe cradle is configured so that a substantially trapezoidal member having a V-shaped concave section extends in the longitudinal direction of the steel pipe to be placed and receives the steel pipe from below. Formed, become erected further the steel pipe cradle slide fixing pin provided on opposite sides of the longitudinal center line of the steel pipe on the upper surface, the in use, the sliding hole of the sliding drilling plate Insert into the slide fixing pin of the steel pipe cradle, and at the top of the steel pipe formed with an arbitrary outer diameter placed on the V-shaped recess of the steel pipe cradle with the center part of the slide drilling plate In the abutting state, a means is adopted in which the drill blade inserted into the drill guide insertion hole of the drill blade guide bush is slid up and down to make a hole.

Further, the steel pipe drilling tool in the present invention is a steel pipe drilling tool that can accurately drill a small-diameter hole on the outer peripheral surface of the steel pipe, and the steel pipe drilling tool includes a slide rotation drilling plate, a steel pipe cradle, and the like. The slide rotation drilling plate is formed in a circular plate shape, and further , a plurality of slide holes are formed on the outer periphery of the slide rotation drilling plate, and a plurality of drill guide receiving ports are formed on the inner periphery. And a drill blade guide bush for forming an arbitrary drill guide insertion hole having a different hole diameter in the inner diameter portion of the drill guide receiving port portion, and a detachable / engageable attachment of the drill guide bush. , a substantially trapezoidal member having a cross section to form a V-shaped recess, formed in a shape to receive the steel pipe and extending in the longitudinal direction of the steel pipe to be placed from below, further wherein The tube cradle upper surface become erected slide fixing pin provided on opposite sides of the longitudinal center line of the steel pipe, in use, the sliding hole of the sliding rotation drilling plate the steel tube cradle While being inserted into the slide fixing pin, the drill guide receiving portion of the slide rotating plate was brought into contact with the topmost portion of the steel pipe formed with an arbitrary outer diameter placed on the V-shaped recess of the steel pipe cradle. In this state, the drill blade inserted into the drill guide insertion hole of the drill blade guide bush is slid up and down to make a hole.

The steel pipe drilling tool 10 according to the present invention is a steel pipe drilling tool 10 that can accurately drill a small-diameter hole H on the outer peripheral surface of the steel pipe P. The steel pipe drilling tool 10 includes a slide drilling plate 20, The slide hole drilling plate 20 is formed in a substantially rectangular plate shape, slide holes 21 are formed at both ends of the slide hole drilling plate 20, and a drill guide receiving part is provided at the center part. And a drill blade guide bush 23 for forming an arbitrary drill guide insertion hole 24 having a different hole diameter in the inner diameter portion of the drill guide receiving port portion 22 is detachably mounted. The base 30 has a shape in which a substantially trapezoidal member forming a recess having a V-shaped cross section extends in the longitudinal direction of the steel pipe P to be placed and receives the steel pipe P from below. Form, further on the upper surface of the steel pipe cradle 30 comprises erected the slide fixing pin 31 provided on opposite sides of the longitudinal center line of the steel pipe P, in use, the sliding hole of the sliding drilling plate 20 21 is inserted into the slide fixing pin 31 of the steel pipe cradle 30 and the center portion of the slide hole drilling plate 20 is formed with an arbitrary outer diameter placed on the V-shaped recess of the steel pipe cradle 30. The most characteristic feature is that the drill blade C inserted in the drill guide insertion hole 24 of the drill blade guide bush 23 is slid up and down to make a hole while in contact with the topmost portion of P. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an explanatory view showing an embodiment of the steel pipe drilling tool of the present invention.
Fig.1 (a) is a perspective view which shows the use condition in the steel pipe drilling tool 10 of this invention.
FIG.1 (b) is a perspective view which shows the assembly state in the steel pipe drilling tool 10 of this invention.
The steel pipe drilling tool 10 of the present invention is composed of a slide drilling plate 20 and a steel pipe cradle 30, and the slide drilling plate 20 is formed in a substantially rectangular plate shape, and is further formed at both ends of the slide drilling plate 20. A drill hole guide bush is formed in which a slide hole 21 is formed, and a drill guide receiving hole 22 projects from the center, and an arbitrary drill guide insertion hole 24 having a different hole diameter is formed in the inner diameter of the drill guide receiving hole 22. The steel pipe pedestal 30 has a substantially trapezoidal member that forms a recess having a V-shaped cross section and extends in the longitudinal direction of the steel pipe P to be placed. form a steel pipe P is formed in a shape to receive the lower, further on the upper surface of the steel pipe cradle 30 provided upright slide fixing pin 31 provided on opposite sides of the longitudinal center line of the steel pipe P It is formed on.

The slide hole drilling plate 20 is formed in a substantially rectangular plate shape, further formed with slide holes 21 at both ends of the slide hole drilling plate 20, and formed into a shape projecting a drill guide receiving port 22 at the center, At the time of drilling work, it is pressed from above and used.

The steel pipe cradle 30 is a steel pipe P on which a substantially trapezoidal member formed of a combination of L-shaped steel and C-shaped steel forming a V-shaped recess, wood, synthetic resin molded article, etc. is placed. The steel pipe P is formed in a shape to receive the steel pipe P from below, and a slide fixing pin 31 is provided on the upper surface of the steel pipe pedestal 30 so as to face the center line in the longitudinal direction of the steel pipe P. It is formed in the set shape.

FIG. 3 is an explanatory view showing another embodiment of the steel pipe drilling tool of the present invention.
Fig.3 (a) is a perspective view which shows the use condition in the steel pipe drilling tool 10 of this invention.
FIG.3 (b) is a perspective view which shows the assembly state in the steel pipe drilling tool 10 of this invention.
The steel pipe drilling tool 10 of the present invention is composed of a slide rotary drilling plate 40 and a steel pipe cradle 30, and the slide rotary drilling plate 40 is formed in a circular plate shape, and the outer periphery of the slide rotary drilling plate 40. A plurality of slide holes 21 are formed on the inner peripheral portion, and a plurality of drill guide receiving hole portions 22 project from the inner peripheral portion, and an arbitrary drill guide insertion hole 24 having a different hole diameter is formed on the inner diameter portion of the drill guide receiving port portion 22. The steel pipe pedestal 30 has a substantially trapezoidal member that forms a recess having a V-shaped cross section. the steel pipe P is formed in a shape to receive the downwardly extending longitudinally sliding solid provided on opposite sides of the longitudinal center line of the steel pipe P is further an upper surface of the steel pipe cradle 30 It formed a pin 31 to the upright shape.

The slide rotation hole drilling plate 40 is formed in a circular plate shape. Further , a plurality of slide holes 21 are formed on the outer periphery of the slide rotation hole drilling plate 40, and a plurality of drill guide receiving portions 22 are provided on the inner periphery. At the same time, a drill blade guide bush 23 for forming an arbitrary drill guide insertion hole 24 having a different hole diameter is formed in an inner diameter portion of the drill guide receiving port portion 22 so that the drill blade guide bush 23 can be detachably attached and locked. During work, it is pressed from above and used.

Claims (2)

A steel pipe drilling tool that can accurately drill a small-diameter hole in the outer peripheral surface of a steel pipe without slipping,
The steel pipe drilling tool is composed of a slide drilling plate and a steel pipe cradle,
The slide hole drilling plate is formed in a substantially rectangular plate shape, slide holes are formed at both ends thereof, a drill guide receiving port portion is projected at the center portion, and a hole is formed in an inner diameter portion of the drill guide receiving port portion. A drill blade guide bush that forms an arbitrary drill guide insertion hole with a different diameter is detachably attached and can be freely locked.
The steel pipe pedestal has a substantially trapezoidal member forming a recess having a V-shaped cross section, and extends in the longitudinal direction of the steel pipe to be placed so as to receive the steel pipe from below. Consists of an upright slide fixing pin that is provided facing the center line in the longitudinal direction of the steel pipe,
In use, the slide hole of the slide hole drilling plate is inserted into the slide fixing pin of the steel pipe holder, and the center part of the slide hole punching plate is placed on the V-shaped recess of the steel pipe holder. A steel pipe drilling tool characterized in that a drill blade inserted into a drill guide insertion hole of the drill blade guide bush is slid up and down in a state in which the steel pipe is formed with an outer diameter dimension of . A steel pipe drilling tool that can accurately drill a small-diameter hole in the outer peripheral surface of a steel pipe without slipping,
The steel pipe drilling tool is composed of a slide rotation drilling plate and a steel pipe cradle,
The slide rotation drilling plate is formed in a circular plate shape, a plurality of slide holes are formed in the outer peripheral portion, and a plurality of drill guide receiving portions are provided on the inner peripheral portion, and the drill guide receiving portion is provided. A drill blade guide bush that forms an arbitrary drill guide insertion hole with a different hole diameter in the inner diameter part of the
The steel pipe pedestal has a substantially trapezoidal member forming a recess having a V-shaped cross section, and extends in the longitudinal direction of the steel pipe to be placed so as to receive the steel pipe from below. Consists of an upright slide fixing pin that is provided facing the center line in the longitudinal direction of the steel pipe,
In use, the slide hole of the slide rotation hole drilling plate is inserted into the slide fixing pin of the steel pipe cradle, and the drill guide receiving port of the slide rotation plate is placed in the V-shaped recess of the steel pipe cradle. A steel pipe characterized in that a drill blade inserted into a drill guide insertion hole of the drill blade guide bush is slid up and down to make a hole while in contact with the top of the steel pipe formed with an arbitrary outer diameter. Drilling tool.