KR200489640Y1 - Wing type wood drilling drill - Google Patents

Abstract

The present invention relates to a wedge type wood perforation drill, and more particularly, to a wedge type wood perforation drill that is detachably attached to a machine tool, and includes a main body rotated by receiving power from a machine tool; A drill unit installed at a lower end of the main body and rotated by receiving a rotational force from the main body to form a hole in the wood; And a wing portion which is inserted and fixed to the drill portion and is disposed at a right angle to the longitudinal direction of the drill portion and which forms a hole in the wood by being rotated, and the wing portion is provided in a columnar shape, A left wing portion, a right wing portion, and a connecting wing portion, the left wing portion being disposed on the left side of the drill portion, a tip portion formed along the length direction and continuous along the longitudinal direction is formed, Wherein the wing portion is disposed on the right side of the drill portion and is formed along the longitudinal direction and is continuous along the longitudinal direction, wherein the left wing portion and the right wing portion form a cross section in a direction perpendicular to the drill portion The first angle formed by any two line segments of the plurality of line segments is formed to be in the range of 35 to 45 degrees, And a second angle formed by a line segment forming the first angle and an imaginary line segment perpendicular to the drill portion is formed at 5 ° to 10 ° so that sawdust is formed in the hole, Thereby preventing accumulation.
According to the present invention, there is an effect that a wood flower pot can be easily processed by easily forming a hole having a large diameter in the wood.

Description

WING TYPE WOOD DRILLING DRILL

The present invention relates to a wing-type wood-boring drill, and more particularly, to a wing-type wood-boring drill for processing wood pots by forming a wide-diameter hole in the wood.

In recent years, as people have become more interested in environmentally friendly products, they are producing environmentally friendly products in various fields. Especially, the products manufactured using synthetic resin and metal are made of environment-friendly materials such as wood materials.

After cutting the length of the timber to be cut properly, a hole is formed in the central part of the tree, so that a wooden flowerpot is made by utilizing the appearance of the tree.

Conventional wooden pots are made by fixing wooden logs to machine tools and using common tools such as bite, drill. Further, when the machine is not used, the operator uses the tool to machine the raw water to be processed.

The conventional woodworking method using a conventional tool and a machine has a problem that it requires a long processing time since a large hole can not be machined at one time. Further, in the case of manual work, it is difficult to rapidly process a large amount of wood, and the tool may be damaged.

Under these circumstances, the inventor of the present invention developed a wing-type wood-boring drill, which is a wood-pot exclusive tool capable of easily processing wood pots by forming a wide-diameter hole in the wood, Respectively.

The object of the present invention is to provide a wing type wood perforation drill according to the present invention, and more particularly, to a wing type wood perforation drill that can easily process a wood flower pot by forming a wide diameter hole in the wood.

The present invention relates to a machine tool, which is detachably mounted on a machine tool, and which is rotated by receiving power from a machine tool; A drill unit installed at a lower end of the main body and rotated by receiving a rotational force from the main body to form a hole in the wood; And a wing portion which is inserted and fixed to the drill portion and is disposed at a right angle to the longitudinal direction of the drill portion and which forms a hole in the wood by being rotated, and the wing portion is provided in a columnar shape, A left wing portion, a right wing portion, and a connecting wing portion, the left wing portion being disposed on the left side of the drill portion, a tip portion formed along the length direction and continuous along the longitudinal direction is formed, Wherein the wing portion is disposed on the right side of the drill portion and is formed along the longitudinal direction and is continuous along the longitudinal direction, wherein the left wing portion and the right wing portion form a cross section in a direction perpendicular to the drill portion The first angle formed by any two line segments of the plurality of line segments is formed to be in the range of 35 to 45 degrees, And a second angle formed by a line segment forming the first angle and an imaginary line segment perpendicular to the drill portion is formed at 5 ° to 10 ° so that sawdust is formed in the hole, Thereby preventing accumulation of the wood-borne wood-boring drill.

The wing portion is inserted into the drill portion and welded to the drill portion.

The drill portion may include a first insertion hole through which the wing portion can be inserted and a second insertion hole into which a fixing pin for fixing the wing portion to the drill portion can be inserted, A screw thread corresponding to the thread of the fixing pin may be formed in the second insertion hole.

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The wing portion may be made of a material having a strength smaller than that of the drill portion.

According to the present invention, there is an effect that a wood flower pot can be easily processed by easily forming a hole having a large diameter in the wood.

FIG. 1 is an overall view of a wing-type wood drilling drill according to an embodiment of the present invention,
FIG. 2 is a front view of a wing-type wood drilling drill according to an embodiment of the present invention,
FIG. 3 is a side view of a wing-type wood drilling drill according to an embodiment of the present invention,
FIG. 4 is a view showing a wing portion and a drill portion of a wing-type wood perforation drill according to an embodiment of the present invention,
FIG. 5 is a view illustrating a wing portion and a drill portion of the wing-type wood perforation drill according to an embodiment of the present invention,
FIG. 6 is a view showing a wing portion of a wing-type wood perforation drill cut in a longitudinal direction according to an embodiment of the present invention,
FIG. 7 is a view illustrating a process of forming a hole in a wood by a wing-type wood drilling drill according to an embodiment of the present invention,
FIG. 8 is a view showing an experiment according to a first angle and a second angle of a wing portion of a wing-type wood perforation drill according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings.

In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the embodiments of the invention.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) can be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a wing-like wood drill according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a front view of a wing-type wood perforation drill according to an embodiment of the present invention, and Fig. 3 is a front view of the wing-type wood perforation drill according to one embodiment of the present invention. Fig. FIG. 4 is a side view of a wing-type wood drilling drill according to an embodiment of the present invention, FIG. 4 is a view showing a wing-type wood drilling drill according to an embodiment of the present invention, FIG. 6 is a perspective view of a wing-type wood drilling drill according to an embodiment of the present invention. FIG. 6 is a perspective view of a wing-type wood drilling drill according to an embodiment of the present invention. FIG. 7 is a view illustrating a process in which a wing-like wood drill drill according to an embodiment of the present invention forms a hole in a wood.

1 to 7, a wing-type wood drilling machine 100 according to an embodiment of the present invention includes a main body 110, a drill 120, and a wing 130 .

The main body 110 is detachably attached to the machine tool 10 and rotated by receiving power from the machine tool 10. [

The main body 110 is coupled to a drill 120 described later, and the main body 110 can provide rotational force to the drill 120.

The drill part 120 is provided at the lower end of the main body part 110 by forming a hole in the wood 20 by receiving a rotational force from the main body part 110.

Here, the wood 20 may be provided with a wood 20 cut into a predetermined length.

However, the workpiece to which the drill 120 can be machined is not limited to the wood 20, but may be any material as long as the drill 120 can form a hole.

The drill 120 may be a conventional steel drill mounted on the machine tool 10. However, the drill 120 is not limited to the above-described conventional steel drill, and may be any material and shape that can form a hole in the workpiece by being rotated.

The drill 120 may be formed with a first insertion hole h1 through which a wing 130 described later can be inserted.

The first insertion hole h1 is formed in a direction perpendicular to the longitudinal direction of the drill 120 and is formed through the drill 120. The first insertion hole h1 has a shape corresponding to the outer circumferential surface of the connection wing portion 133 As shown in FIG.

The wing portion 130 is rotated to form a hole in the wood 20, and is inserted and fixed to the drill portion 120.

The wing portion 130 is inserted into the first insertion hole h1 formed in the drill portion 120 and is disposed at a right angle to the longitudinal direction of the drill portion 120. The wing portion 130 is weld- Can be fixed.

At this time, the drill part 120 and the wing part 130 are formed by using argon arc welding, gas welding, oxygen welding, CO2 welding, TIG (Inert-gas tungsten- arc welding, and the like.

The wing portion 130 may be formed of a material having a strength smaller than that of the drill portion 120. If the strength of the wing portion 130 is too great, if the wing portion 130 is rotated and contacted with the knot portion of the wood 20 or an overload occurs, the wing portion 130 is broken or partially damaged and the operator is injured It is because.

Conversely, if the strength of the wing portion 130 is too small, the wing portion 130 may be bent when it contacts the knot portion of the wood 20. Also, since the wing 130 is softened by heat generated during cutting, it is not possible to form a hole having a desired shape. Therefore, the material of the wing 130 is very important.

Accordingly, it is most preferable that the wing portion 130 is made of a high speed steel material. The high-speed steel is the same material as the planer blade that cuts the wood, and it is judged that it is the most suitable material to process the hole in the wood through a number of experiments.

However, the wing portion 130 is not limited to the above-described high-speed steel material but may be made of any material as long as it can be processed into a hole in the wood by being rotated.

The wing portion 130 may include a left wing portion 131, a right wing portion 132, and a connecting wing portion 133 in more detail.

The left wing portion 131 is disposed on the left side of the drill portion 120 when engaged with the drill portion 120 and is rotated simultaneously when the drill portion 120 is rotated.

The left wing portion 131 is provided such that the first angle a1 formed by any two of the plurality of line segments constituting the cross section in the direction perpendicular to the drill portion 120 is in the range of 35 DEG to 45 DEG .

The left wing portion 131 has a second angle a2 formed by a line segment forming the first angle a1 and an imaginary line segment perpendicular to the drill portion 120 of 5 to 10 degrees Respectively.

For example, the left wing portion 131 may be provided in a triangular column shape as shown in FIG. 6, wherein a first angle a1 of the triangle forming the transverse cross section of the triangular column is set at 35 to 45 degrees, The first line segment L1 constituting the first angle a1 is formed in the drill section 120 so as to form an angle of 5 ° to 10 ° with an imaginary line segment perpendicular to the drill section 120 as shown in FIG. Can be placed and fixed.

However, the shape of the left wing portion 131 is not limited to the above-described triangular prism shape, but a first angle a1 is formed, and any one of the line segments forming the first angle a1 is formed in the drill portion 120 Any shape may be used as long as it is a shape that can be arranged so as to form a second angle (a2) with an imaginary line segment that is vertical.

Both sides forming the first angle a1 of the left wing portion 131 are brought into contact with the upper surface of the wood 20 when the left wing portion 131 is rotated, And a hole may be formed in the wood 20 by cutting.

The right wing portion 132 is disposed on the right side of the drill portion 120 when engaged with the drill portion 120 and is rotated simultaneously when the drill portion 120 is rotated.

The right wing portion 132 may be formed such that a first angle a1 formed by any two line segments of a plurality of line segments constituting a cross section in the direction perpendicular to the drill portion 120 is set at 35 to 45 have.

The right wing portion 132 has a second angle a2 formed by a line segment forming the first angle a1 and a virtual line segment perpendicular to the drill portion 120 is 5 to 10 Respectively.

For example, the right wing portion 132 may be provided in a triangular prism shape as shown in FIG. 6. In this case, the first angle a1 of the triangle constituting the cross section of the column is set to 35 to 45 degrees, The first line segment L1 forming the angle a1 is disposed in the drill unit 120 so as to form an angle of 5 to 10 degrees with an imaginary line segment perpendicular to the drill unit 120 as shown in FIG. Can be fixed.

However, the shape of the right wing portion 132 is not limited to the above-described triangular prism shape, but a first angle a1 is formed, and any one line segment forming the first angle a1 is formed in the drill portion 120 Any shape may be used as long as it is a shape that can be arranged so as to form a second angle (a2) with an imaginary line segment that is vertical.

Both sides forming the first angle a1 of the right wing 132 when the right wing 132 described above is rotated are brought into contact with the upper surface of the wood 20 such that the wood 20 is cut So that a hole can be formed in the wood 20.

On the other hand, the diameter of the holes formed in the wood 20 can be determined according to the lengths of the left wing portion 131 and the right wing portion 132.

For example, the longer the length of the left wing portion 131 and the right wing portion 132, the larger the diameter of the hole formed in the wood 20, and the shorter the length of the left wing portion 131 and the right wing portion 132 The diameter of the holes formed in the wood 20 becomes smaller.

When the wood 20 is processed while the wing portion 130 is rotated, sawdust is formed as a by-product of processing. The sawdust is formed at a first angle a1 of each of the left wing portion 131 and the right wing portion 132 Quot;). ≪ / RTI >

More specifically, sawdust produced by machining is moved along two planes forming a first angle a1, wherein the first angle a1 made by the two planes is between 35 and 45 degrees, And can be moved to the upper side of the wing 130 along the upper side forming the first angle a1.

However, when the first angle a1 is less than 35 degrees, the thickness of the wing portion 130 becomes thin, so that the strength to cut the wood 20 can not be secured. According to this, the cutting effect can be remarkably lowered, and there is a problem that the blade 130 may be broken during processing.

When the first angle a1 is less than 35 degrees, the inclination of the wing portion 130 becomes small, so that the sawdust can not be moved to the outside of the wood 20 along the upper side of the wood 20, And is accumulated inside.

On the contrary, when the first angle a1 is formed to exceed 45 degrees, the thickness of the wing portion 130 becomes excessively thick, so that the contact area with the wood 20 becomes large. According to this, there is a problem that cutting of the wood 20 can not be performed precisely.

However, when the first angle a1 is formed at 35 to 45 degrees, the sawdust can be moved along a constant path, can be moved out of the hole processed in the wood 20 and out of the wood 20 The sawdust removal is facilitated, and the wood 20 can be effectively cut.

On the other hand, the sawdust can be moved outside the wood 20 without being accumulated inside the wood 20 by the second angle a2.

More specifically, when the second angle a2 is less than 5 degrees, the sawdust is sandwiched between the wings 130 and the wood 20, thereby preventing the wings 130 from rotating, ) May be damaged.

On the contrary, when the second angle a2 is formed in excess of 10 degrees, a vortex occurs at the processing due to the inclination, and this vortex moves the sawdust to the air. There is a risk that the sawdust may hit the operator's face or enter the operator's eyes.

In addition, when the second angle a2 is formed to exceed 10 degrees, the angle of contact between the wood 20 and the wing portion 130 increases, and thus the cutting effect is reduced.

However, when the second angle a2 is formed at 5 to 10 degrees, a space is formed between the wing portion 130 and the wood 20 by the second angle a2, And the wood 20, and can be moved to the lower end of the wing 130.

The sawdust moved to the lower end of the wing 130 may be moved to the upper side of the wing 130 by the first angle a1 of the rotating wing 130 and may be moved to the outside of the wood 20.

According to the wing 130 forming the first angle a1 and the second angle a2, it is possible to easily process a wide diameter hole in the wood 20, and the sawdust can be easily removed It is effective.

The connecting wing portion 133 connects the left wing portion 131 and the right wing portion 132 and has one end connected to the left wing portion 131 and the other end connected to the right wing portion 132.

The connecting wing portion 133 may be formed in a shape corresponding to the inner circumferential surface of the first insertion hole h1.

The wing portion 130 may be formed in a circular or square pillar shape before being coupled to the drill portion 120. The wing portion 130 is welded to the drill portion 120, And then processed to form a first angle a1 and a second angle a2.

Further, the drill part 120 and the wing part 130 may be joined by the fixing pin p without welding.

When the drill part 120 and the wing part 130 are coupled by the fixing pin p, the drill part 120 and the wing part 130 are inserted with the fixing pin p The second insertion hole h2 is formed.

The wing portion 130 inserted into the drill portion 120 is inserted into the second insertion hole h2 formed in the drill portion 120 and the wing portion 130 as shown in FIG. And then processed to form the first angle a1 and the second angle a2.

The fixing pin p may have a screw shape having a thread on the outer circumferential surface thereof and the thread hole corresponding to the thread shape of the fixing pin p may be formed on the second insertion hole h2.

According to the shape of the fixing pin p and the second insertion hole h2, since the fixing pin p is screwed to the respective second insertion holes h2, the wing portion 130 is inserted into the drill portion 120 The wing portion 130 can be detached from the drill portion 120 when the fixing pin p is removed.

That is, the wing portion 130 can be selectively coupled to the drill portion 120, so that the wings 130 of various sizes and lengths can be replaced according to the size of the wood 20 and the diameter of the hole to be processed .

According to the winged wood perforation drill 100 including the main body 110, the drill part 120 and the wing part 130 as described above, it is possible to easily form a hole having a large diameter in the wood 20 There is an effect that the wooden pot can be easily processed.

Further, there is an effect that the sawdust can be easily removed to the outside of the wood (20) without being accumulated inside the wood (20).

Hereinafter, the results of the wood punching test according to the first angle and the second angle of the wing portion of the wing-type wood perforation drill according to an embodiment of the present invention will be described with reference to FIG.

FIG. 8 is a view showing an experiment according to a first angle and a second angle of a wing portion of a wing-type wood perforation drill according to an embodiment of the present invention.

[Example 1] First and second angle formation of wings

The first angle formed by any two of the line segments constituting the cross section in the direction perpendicular to the drill section of the wing section is formed to be 40 degrees, and any one of the line segments forming the first angle and the And the second angle made by the imaginary line segment formed by the imaginary line segment is 7.5 DEG.

[Comparative Example 1]

The first angle formed by any two of the line segments constituting the cross section in the direction perpendicular to the drill section of the wing section is formed to be 34 degrees, and any one of the line segments forming the first angle and the And the second angle made by the imaginary line segment formed by the imaginary line segment is 7.5 DEG.

[Comparative Example 2]

The first angle formed by any two of the line segments constituting the cross section in the direction perpendicular to the drill section of the wing section is formed to be 46 degrees, and any one of the line segments forming the first angle and the And the second angle made by the imaginary line segment formed by the imaginary line segment is 7.5 DEG.

[Comparative Example 3]

The first angle formed by any two of the line segments constituting the cross section in the direction perpendicular to the drill section of the wing section is formed to be 40 degrees, and any one of the line segments forming the first angle and the And the second angle formed by the imaginary line segment formed by the imaginary line segment is 4 degrees.

[Comparative Example 4]

The first angle formed by any two of the line segments constituting the cross section in the direction perpendicular to the drill section of the wing section is formed to be 40 degrees, and any one of the line segments forming the first angle and the The second angle formed by the imaginary line segment formed by the imaginary line segment is 11 degrees.

[Experimental Example 1]

The characteristics of the wings formed according to Example 1 and the wings formed according to Comparative Examples 1 to 4 were tested under the conditions shown in Table 1 below.

Shape of wings First angle 40 ° Second angle 7.5 °

Here, the first angle means an angle formed by any two line segments of a plurality of line segments constituting a cross section in the direction perpendicular to the drill portion of the wing portion, and the second angle means an angle formed between any one of the line segments forming the first angle And an imaginary line segment perpendicular to the drill unit.

The thickness of the wood to be processed is 20 cm in diameter, the height of the wood is 25 cm, and the width of the wing is 10 cm. In addition, the wing portion was rotated at 4000 rpm under a torque of 25 to 30 kgf · cm.

The test results of Example 1 are shown in Table 2 below.

Sawdust removal rate Processability Roughness of the processed surface effect the best the best Prize

Here, the effect refers to the five characteristics of the characteristics, that is, the effects on the removal rate of sawdust, the workability, and the roughness of the machined surface, which are classified as "best", "upper", "middle", " And the first step with practicality was set as the 'phase' stage.

On the other hand, the sawdust removal rate refers to how much the sawdust generated when the wing-type wood boring drill is processed by the wood is removed to the outside of the wood, and the workability is related to the depth of the wing- And the roughness of the machined surface is related to the degree of roughness of the surface of the winged wood drill made by the drilled wood, and the smoothest case is set to the "best" and the roughest case is set to the "lowest".

The test results of Comparative Example 1 are shown in Table 3 below.

Sawdust removal rate Processability Roughness of the processed surface effect medium Prize Prize

As shown in Table 3, the effect of the sawdust removal rate of the wing-type wood perforation drill according to Comparative Example 1 was "moderate" and the effect of the workability was " And the effect of workability was lowered.

When the value of the first angle of the blade portion is less than 35 degrees as in Comparative Example 1, the sawdust can not be moved to the outside of the wood along the upper side forming the first angle, but is struck against the inner wall of the wood to accumulate inside the wood The effect of the sawdust removal rate is lowered.

Further, when the value of the first angle of the wing portion is less than 35 degrees, the thickness of the wing portion is thinned, so that the strength to cut the wood can not be secured and the effect of the workability is lowered.

That is, it can be determined that the effect of the sawdust removal rate and workability of the wing-type wood perforation drill according to an embodiment of the present invention is determined by the first angle of the wing portion.

On the other hand, when the wing-type wood perforation drill according to Comparative Example 1 was continuously tested, the wing portion was softened due to the heat generated during the processing of wood, and the shape was changed. According to this, it can be judged that the durability is remarkably lowered when the first angle value is less than 35 °.

The test results of Comparative Example 2 are shown in Table 4 below.

Sawdust removal rate Processability Roughness of the processed surface effect medium medium medium

As shown in Table 4, the effect of the sawdust removal rate, the workability, and the roughness of the machined surface of the wing-type wood perforation drill according to the comparative example 2 is "moderate", the sawdust removal rate of the wing- The workability, and the roughness of the processed surface.

When the value of the first angle of the wing portion is greater than 45 degrees as in Comparative Example 2, the sawdust is moved along the upper surface forming the first angle. At this time, a vortex occurs at the processing due to the inclination of the wing portion. The vortex moves the sawdust into the air. According to this, since the sawdust is drawn into the inside of the wood again, the effect of the sawdust removal rate is lowered.

Further, when the first angle of the wing portion is formed to exceed 45 degrees, the area of the wing portion is widened. Accordingly, the area of the wing portion contacting with the wood is also widened. According to this, the workability is poor and the machining area is not smooth during machining, so that the effect of workability and roughness is lowered.

That is, it can be judged that the effect of the sawdust removal rate, workability, and roughness of the machined surface of the wing-type wood perforation drill according to an embodiment of the present invention is determined by the first angle of the wing portion.

The test results of Comparative Example 3 are shown in Table 5 below.

Sawdust removal rate Processability Roughness of the processed surface effect Ha Prize Prize

As shown in Table 5, the effect of the sawdust removal rate of the wing-type wood perforation drill according to the comparative example 3 was "lower" and the effect of the workability was "upper" , But the effect was less than the effect of workability.

If the second angle of the wing portion is less than 5 degrees as in Comparative Example 3, the sawdust generated during the machining is sandwiched between the wing portion and the wood, so that the sawdust can not be moved to the outside of the wood but remains inside the wood. The effect of the sawdust removal rate is lowered due to interference with the sawdust.

In addition, the sawdust is continuously accumulated between the wing portion and the wood to interfere with the rotation of the wing portion, and the rotation of the wing portion is lowered, so that the effect of the workability is lowered.

 That is, it can be judged that the effect of the sawdust removal rate and workability of the wing-type wood perforation drill according to an embodiment of the present invention is determined by the second angle of the wing portion.

On the other hand, when continuous processing was carried out, sawdust was accumulated between the wing portion and the wood, the rotation of the wing portion was interrupted, and then the wing portion was broken. According to this, when the second angle value is less than 5 degrees, it can be judged that the durability is remarkably lowered.

The test results of Comparative Example 4 are shown in Table 6 below.

Sawdust removal rate Processability Roughness of the processed surface effect Ha Ha Ha

As shown in Table 6, the sawdust removal rate, workability, and roughness effect of the machined surface of the wing-type wood perforation drill according to Comparative Example 4 were 'lower'. The machinability and the roughness of the machined surface of the wing-type wood perforation drill according to the first embodiment.

When the value of the second angle of the wing portion is greater than 10 degrees as in Comparative Example 4, the angle at which the wing portion touches the wood becomes large, whereby the area in which the upper surface of the wing portion touches the wood becomes large, The effect of workability is also lowered.

Since the effect of the machining property is deteriorated, the machined surface is also not smooth, and the roughness effect of the machined surface is also lowered.

Further, when the second angle of the blade portion is formed to exceed 10 degrees, a vortex occurs at the processing due to the inclination of the blade portion, and this vortex moves the sawdust to the air. According to this, since the sawdust is drawn into the inside of the wood again, the effect of the sawdust removal rate is lowered.

That is, it can be determined that the sawdust removal rate, workability, and roughness effect of the machined surface of the wing-type wood drilling drill according to the embodiment of the present invention are determined by the second angle of the wing 130.

Therefore, it is preferable that the first angle a1 is formed within the range of 35 to 45 degrees, and the second angle a2 is preferably formed within the range of 5 to 10 degrees.

As described above, all the constituent elements of the embodiment of the present invention have been described as being combined or operated as a single unit, so that the present invention is not necessarily limited to these embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them.

Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined in the art.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims.

Therefore, the embodiments disclosed in this specification are intended to illustrate rather than limit the technical idea of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas which are within the scope of the same should be interpreted as being included in the scope of the present invention.

100: A wedged wood drill according to one embodiment of the present invention.
110:
120: drill section
130: wing portion
131: left wing
132: Right wing
133: connecting wing
h1: first insertion hole
h2: second insertion hole
p: Fixing pin
a1: the first angle
a2: second angle
L1: first line segment
10: Machine tools
20: Wood

Claims (6)

A main body detachably attached to the machine tool, the main body being rotated by receiving power from the machine tool;
A drill unit installed at a lower end of the main body and rotated by receiving a rotational force from the main body to form a hole in the wood; And
And a wing portion which is inserted and fixed to the drill portion and is arranged to be perpendicular to the longitudinal direction of the drill portion and which forms a hole in the wood by being rotated,
The wing portion
The drill portion is inserted into the drill portion and then processed to be inserted into the drill portion, thereby being divided into a left wing portion, a right wing portion, and a connecting wing portion,
The left-
A tip portion disposed on the left side of the drill portion and formed along the longitudinal direction and continuous along the longitudinal direction,
The right-
A drill portion disposed on the right side of the drill portion, the drill portion being machined along the longitudinal direction and being continuous along the longitudinal direction,
The left wing portion and the right wing portion,
The first angle formed by any two of the plurality of line segments constituting the cross section in the direction perpendicular to the drill is formed to be in the range of 35 to 45 degrees so that the sawdust is moved along any one of the two line segments And a second angle formed by a line segment forming the first angle and an imaginary line segment perpendicular to the drill is formed at 5 to 10 degrees to prevent accumulation of sawdust in the hole. Winged wood drilling drill.
The method according to claim 1,
The wing portion
Wherein the drill is inserted into the drill unit and welded to the drill unit.
The method according to claim 1,
The drill unit
A first insertion hole through which the wing portion can be inserted and inserted and a second insertion hole into which a fixing pin for fixing the wing portion to the drill portion can be inserted,
Wherein the fixing pin includes:
A thread is formed on the outer peripheral surface,
In the second insertion hole,
And a screw thread corresponding to a thread of the fixing pin is formed.
delete delete The method according to claim 1,
The material of the wing portion,
Wherein the drill unit is provided with a material having a strength smaller than that of the drill unit.

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