KR20240003070A - One-touch adjustable woodworking tool bit - Google Patents

Abstract

The present invention relates to a processing bit for forming a double groove. The present invention, as an embodiment, is a processing bit for forming a stepped double groove in a workpiece by mounting a drill bit. A through hole is formed in the center through which the drill bit is inserted in the longitudinal direction, and the drill bit is exposed to the outside on the side. An exposed long hole is formed, a drill tip is formed at the end to form a groove with a larger diameter than the mounted drill bit, and a hole is formed in the center through which the drill tip is inserted and penetrates in the thickness direction from the outside. It is provided with a binding member that presses the drill bit through the long hole of the drill tip, is rotatably coupled to the fixture and the fixture integrated with the drill tip, and a hole is formed in the center so that the drill tip passes through the center. , a machining bit for forming a double groove including a rotating sphere that contacts the surface of the workpiece during work and limits the depth of the groove formed by the drill tip on the workpiece.

Description

One-touch adjustable woodworking tool bit

The present invention relates to a processing bit for forming a double groove, and more specifically, to a processing bit for forming a double groove used to form a double groove that prevents the head of a fastening member used in wood from being exposed to the outside.

Generally, when assembling a processed object such as wood, it is assembled using countersunk screws that are inserted and connected as much as possible inside the wood to ensure rapid assembly of the wood and to maximize the aesthetics of the wood.

Meanwhile, a countersunk groove into which a countersunk screw can be inserted is formed on the joint of the wood as a pretreatment process to prevent damage such as cracking of the wood when joining the countersunk screw.

The countersunk groove formed in this way is formed through a commonly known double bit, and the double bit is connected to a power tool and operated electrically, providing convenience in work.

However, the double bit operated by being connected to a power tool needs to determine the depth of insertion into the wood by considering the thickness of the wood or the length of the countersunk screw. According to this need, a double bit capable of controlling the drilling depth was proposed in Republic of Korea Patent No. 10-1264080.

However, in the case of the prior art, a member for controlling the protruding length of the drill bit and a member for controlling the depth of the groove are provided, making it cumbersome to adjust the length of the drill bit and the depth of the groove, and each member restricts each other's movement. Therefore, there is a problem that it is difficult to freely adjust the length and depth.

Republic of Korea Patent No. 10-1264080 (2013.05.08)

The present invention allows the protrusion length of the drill bit and the depth of the groove to be adjusted with a single adjustment member, making it easy to adjust the protrusion length of the drill bit and the depth of the groove, and the adjustment member can be moved without interference, so the length can be adjusted freely. and a processing bit for forming a double groove with adjustable depth.

Other detailed purposes of the present invention will be clearly understood and understood by experts or researchers in this technical field through the detailed contents described below.

In order to solve the above problem, the present invention is an embodiment of a processing bit for forming a stepped double groove in a workpiece by mounting a drill bit, and a through hole is formed in the center through which the drill bit is inserted in the longitudinal direction, A long hole is formed on the side through which the drill bit is exposed to the outside, a drill tip is formed at the end to form a groove with a larger diameter than the mounted drill bit, and a hole is formed in the center so that the drill tip is inserted and passes through. , a fixture that penetrates from the outside in the thickness direction and presses the drill bit through the long hole of the drill tip, is rotatably coupled to the fixture and the fixture integrated with the drill tip, and a hole is formed in the center to form a central A processing bit for forming a double groove is presented, which includes a rotating sphere through which the drill tip passes and which contacts the surface of the workpiece during work to limit the depth of the groove formed by the drill tip on the workpiece.

Here, the drill tip has a coupling part that is inserted into and coupled to a rotary electric mechanism, extends from the coupling part, and a long hole is formed on the side in the longitudinal direction so that the binding member of the fixture presses the drill bit within the range of the long hole. It may include a body portion and a processing portion formed at an end of the body portion and forming a second groove with a larger diameter than the first groove while being stepped around the first groove formed by the drill bit. there is.

At this time, a scale may be formed on one side of the long hole formed in the body portion to allow the depth of the second groove to be measured according to the positions of the fixture and the rotator.

Additionally, a mounting groove recessed in the longitudinal direction is formed in the processing portion, and a processing blade may be attached to the mounting groove.

Meanwhile, the fixture includes a body made of a cylindrical member with a hole formed in the center, a coupling surface formed to protrude around the hole of the body and coupled to the hole in the center of the rotation sphere to integrate the fixture and the rotation sphere, and the It may include a binding member that penetrates the body in the thickness direction and presses and secures the drill bit through the long hole of the drill tip.

Meanwhile, the rotary tool has a body in which a hole is formed in the center, and one side of which is formed with an intermittent groove in a concavo-convex shape, and an outer circumference is attached to the hole in the center of the body, and the fixture is coupled to the inner circumference, and the fixture and the It may include a sliding member that allows the rotary sphere to rotate relatively.

According to an embodiment of the present invention, the protruding length of the drill bit and the position of the stopper can be adjusted with a single adjusting member, making it easy to adjust the protruding length of the drill bit and the depth of the groove, and the adjusting member can be moved without interference. Therefore, a large range of length and depth can be freely adjusted.

At this time, a long hole is formed in the body of the drill tip and the drill bit located in the center is exposed through the long hole, so that the adjustment member can be freely moved within the range where the long hole is formed, and the adjustment member and the adjustment member are connected by a single binding member that passes through the long hole. Since the drill bits are fixed together, it is possible to simultaneously fix the position of the adjustment member that determines the protruding length of the drill bit forming the first groove and the depth of the second groove. Additionally, chips of the workpiece may be discharged through the long hole.

Meanwhile, by forming a scale on one side of the long hole of the drill tip, the end of the adjustment member can be fixed at a specific scale position, and the desired depth of the second groove can always be kept constant even when working at different times and places. You can fit it.

Meanwhile, by forming a longitudinal mounting groove on the machined part of the drill tip and attaching a machining blade into the mounting groove, a second groove can be formed by the machining blade, and chips generated from the workpiece are easily discharged along the mounting groove. .

Meanwhile, the adjusting member is composed of a fixture that fixes the drill and the adjusting member, and a rotating member placed in front of the fixture, and the rotating member is coupled to the fixture so that it can rotate with respect to the fixture, so that the fixture can rotate idle even if the rotating member is in contact with the workpiece. Therefore, damage to the processing bit is prevented.

Meanwhile, an intermittent groove with a concavo-convex shape is formed on one side of the rotating sphere, so that chips generated by the workpiece can be discharged.

Other effects of the present invention will be readily apparent and understood by experts or researchers in the technical field through the specific details described below or during the process of implementing the present invention.

Figure 1 is a perspective view showing a processing bit for forming a double groove according to an embodiment of the present invention.
Figure 2 is an exploded perspective view showing a processing bit for forming a double groove according to the embodiment of Figure 1.
Figure 3 is a cross-sectional view showing a processing bit for forming a double groove according to the embodiment of Figure 1.
FIG. 4 is a view showing adjusting a drill bit, fixture, and rotary tool to form various double grooves with a double groove forming processing bit according to the embodiment shown in FIG. 1.
Figure 5 is a diagram showing the process of forming a groove with a processing bit for forming a double groove according to the embodiment shown in Figure 1.

The features and effects of the present invention described above will become more apparent through the following detailed description in conjunction with the accompanying drawings, and accordingly, those skilled in the art will be able to easily implement the technical idea of the present invention. You will be able to. Since the present invention can be subject to various changes and can have various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention.

Hereinafter, a processing bit for forming a double groove according to an embodiment of the present invention will be described in detail with reference to the drawings. In this specification, similar reference numbers are assigned to identical and similar configurations even in different embodiments, and the description is replaced with the first description.

The processing bit 100 for forming a double groove according to an embodiment of the present invention is a processing bit for forming a stepped double groove 30 on a workpiece 50 by mounting a drill bit 40, and the drill tip (1) ), a fixture (2), and a rotary fixture (3). At this time, the fixture and the rotator are combined to form an adjustment member.

The drill tip 1 has a through hole 14 formed in the center through which the drill bit 40 is inserted in the longitudinal direction, and a long hole 121 through which the drill bit 40 is exposed to the outside is formed on the side. A processing blade 132 is formed to form a groove with a larger diameter than the drill blade 40 to be mounted.

Meanwhile, the fixture (2) has a hole formed in the center through which the drill tip (1) is inserted and passes through from the outside in the thickness direction to press the drill bit (40) through the long hole (121) of the drill tip (1). It is provided with a binding member (23) that does.

In addition, the rotary tool 3 is rotatably coupled to the fixture 2 in a hole formed in the center, and contacts the surface of the workpiece during work to limit the depth of the groove formed by the drill tip 1 on the workpiece.

Here, the fixture (2) and the rotary device (3) are formed as an integrated body. Accordingly, when the binding member 23 of the fixture is bound to press the drill bit, the drill tip (1), fixture (2), and rotary tool (3), which make up the drill bit (40) and the machining bit (100), are completely integrated. do.

Meanwhile, the double groove 30 refers to a groove formed by connecting a groove for fastening the screw of the bolt and a groove for placing the head of the bolt with a step when fastening a bolt to wood used in furniture, for example. Hereinafter, in this specification, the groove for fastening the screw is referred to as the first groove (10), and the groove for placing the head of the bolt is referred to as the second groove (20).

At this time, the length of the first groove (10) is determined by the length of the drill protruding from the drill tip (1), and the length of the second groove (20) is determined by the position of the rotary tool (3) integrated with the fixture (2). It is decided depending on

The processing bit for forming a double groove according to an embodiment of the present invention configured in this way can adjust the protrusion length of the drill and the position of the adjustment member with a single binding member. In addition, since the adjustment member can move freely without interference, a wide range of double grooves can be formed.

Hereinafter, the configuration of each part will be described in detail with reference to the drawings.

Figure 1 is a perspective view showing a processing bit for forming a double groove according to an embodiment of the present invention, Figure 2 is an exploded perspective view showing the processing bit for forming a double groove, and Figure 3 is a cross-sectional view showing the processing bit for forming a double groove. am.

The drill tip (1) is equipped with a drill blade (40) and a processing blade (132) is formed at the end to form a double groove (30), while the protruding length of the drill blade (40) and the processing of the processing blade (132) are formed. It is a configuration in which a long hole 121 for adjusting the depth is formed, and includes a coupling portion 11, a body portion 12, and a processing portion 13.

The coupling portion 11 is inserted and coupled to a rotary transmission mechanism. The rotary electric mechanism is, for example, an electric drill 60, and the coupling portion 11 is coupled to a drill chuck. By combining the coupling portion 11, the entire machining bit is coupled to the electric drill 60 and rotates to enable groove machining.

The body portion 12 extends from the coupling portion 11, and a long hole 121 is formed on the side in the longitudinal direction. As the binding member 23 of the fixture 2 moves within the range of the long hole 121, the drill bit Press and secure (40).

The drill tip 1 is formed with a through hole 14 penetrating the center in the longitudinal direction, and the drill bit 40 is coupled and mounted through this through hole 14. The drill bit 40 mounted on the drill tip 1 is fixed by the binding member 23 at an appropriate position such that the blade portion protrudes to the outside of the machined portion 13 of the drill tip 1.

Meanwhile, a long hole 121 is formed in the longitudinal direction on the side of the body 12, and this long hole 121 meets the through hole 14 of the drill tip 1, so that the drill tip 1 has an overall 'T' shape. A hole in the shape of a hole is formed. The side of the drill bit 40 is exposed to the outside by the long hole 121, and the binding member 23 can freely move and fix the drill bit 40 within the range where the long hole 121 is formed.

At this time, a scale 122 may be formed on one side of the long hole 121 to allow the depth of the second groove 20 to be measured according to the position of the rotating sphere 3 integrated with the fixture 2. At this time, the scale 122 may indicate, for example, the length from the end of the processing unit 13 to one side of the rotating sphere 3 (the surface in contact with the workpiece).

The length from the end of the processing part 13 to one side of the rotating sphere 3 corresponds to the length of the second groove 20 in actual processing, and accordingly, the depth of the second groove 20 (the head of the fastening member The depth at which it is located can be measured.

Meanwhile, the processing portion 13 is formed at the end of the body portion 12, and is stepped around the first groove 10 formed by the drill bit 40, forming the first groove 10. A second groove 20 with a larger diameter is formed. A mounting groove 131 is formed in the longitudinal direction of the processing portion 13, and a processing blade 132 is attached to the mounting groove 131.

The machining blade 132 is formed of cemented carbide and can secure sufficient cutting force. The processing blade 132 is formed to have an inclined end, and a blade is formed at the inclined end, so that the workpiece can be cut by rotation. The mounting groove 131 forms a space where the processing blade 132 is attached, and is connected to the through hole 14 in the center of the drill tip 1 to form a passage through which chips generated from the workpiece 50 are discharged to the outside. can do.

To this drill tip (1), a combination of a fixture (2) and a rotary tool (3) is coupled as an adjustment member. Here, the fixture (2) has a shape coupled to surround the outside of a partial area of the drill tip (1) and is provided with a binding member (23) penetrating in the thickness direction from the outside of the fixture (2).

The binding member 23 passes through the long hole 121 of the drill tip 1 and presses the drill bit 40, forming a combination of the drill tip 1 and the fixture 2 and the fixture 2 (3). ) is integrated into one. Accordingly, when the drill tip (1) is mounted on the electric drill (60), the drill tip (1), fixture (2), and rotary tool (3) rotate together by the operation of the electric drill.

Specifically, the fixture 2 may include a body 21, a coupling surface 22, and a binding member 23.

The body 21 is made of a cylindrical member with a hole formed in the center and is coupled to surround some points of the drill tip 1. A hole is formed in the body 21 for coupling the binding member 23 in the thickness direction, and the body 21 can be moved along the longitudinal direction of the drill tip 1 before being fixed by the binding member 23. .

The engaging surface 22 is formed to protrude around the central hole of the body 21 and is configured to engage the rotating sphere 3. The coupling surface 22 is coupled to the hole inside the rotary sphere 3 so that the fixture 2 and the rotary sphere 3 are integrated.

The binding member 23 penetrates the body 21 in the thickness direction, passes through the long hole 121 of the drill tip 1, and presses and secures the side of the drill bit 40 exposed through the long hole 121. Through this, the fixation of the drill bit 40 and the fixture 2 are performed together, and the position of the drill bit 40 and the position of the rotary tool 3 integrated with the fixture 2 are also determined.

As shown in Figure 4, the user can adjust the appropriate mounting position by moving the drill bit 40 within the through hole 14 of the drill tip 1 and rotate with the fixture 2 within the range of the long hole 121. The position can be adjusted by moving the assembly of the sphere (3). Afterwards, when the binding member 23 is fastened to fix the drill bit 40, not only the protruding length of the drill bit 40 is adjusted and fixed, but also the positions of the fixture 2 and the rotary tool 3 are adjusted and fixed at the same time.

The rotary hole (3) has a hole formed in the center, the fixture (2) is rotatably coupled to this hole, and when the drill tip (1) forms the second groove (20) in the workpiece, a second groove (20) of a certain depth is formed. When the groove 20 is formed, it contacts the surface of the workpiece and limits the depth of the groove formed by the drill tip 1 on the workpiece.

Specifically, the rotating sphere 3 includes a body 31 and a sliding member 32.

The body 31 has a hole formed in the center, and the surface disposed in the direction in which the drill bit 40 protrudes has irregular grooves formed therein. The intermittent grooves formed in the body 31 can be a passage through which chips of workpieces generated during work are discharged.

This body 31 is coupled to the coupling surface 22 of the fixture 2 via a sliding member 32. The sliding member 32 is, for example, a bearing, and the outer diameter of the bearing is coupled to the central hole of the body 31, while the engaging surface 22 of the fixture 2 is coupled to the inner diameter of the bearing. Accordingly, the rotator 3 and the fixture 2 can rotate independently without interference from each other.

In reality, when processing to form a double groove on the workpiece 50 is performed using the double groove forming processing bit 100, the drill bit 40 and the drill tip 1 are inserted into the workpiece 50 at a certain depth and rotate. Even if the sphere 3 comes into contact with the workpiece 50, the rotation of the drill bit 40 and the drill tip 1 is not interrupted, and the processing depth can be limited.

The processing bit for forming the double groove described above can be used as follows.

Figure 5 is a diagram showing the process of forming a groove with a processing bit for forming a double groove according to an embodiment of the present invention.

The user first installs the drill bit 40 on the double groove forming processing bit 100, but adjusts the position of the drill bit 40 protruding from the drill tip 1 in consideration of the depth to be processed. When the length of the fastening member 70 fastened to the double groove 30 is long, the first groove 10 needs to be formed long, so the protruding length of the drill bit 40 is also lengthened.

Meanwhile, considering the depth at which the head of the fastening member 70 fastened to the double groove 30 is located, the positions of the integrated fixture (2) and rotary tool (3) are adjusted to allow the drill tip (1) to be processed. Adjust the depth. In the case where the head of the fastening member 70 is placed in a deep position, the fixture (2) and the rotary tool (3) are moved close to the coupling part 11 and the head of the fastening member 70 is placed in a shallow position. In this case, the fixture (2) and the rotary tool (3) are moved closer to the processing part (13). At this time, the positions of the fixture (2) and the rotary mechanism (3) can be adjusted using the scale 122 formed around the long hole 121.

In this way, after determining the protruding length of the drill bit 40 and the positions of the fixture 2 and the rotary tool 3, the binding member 23 is fastened to form the drill bit 40, the fixture 2, and the rotary tool 3. The position of is fixed and the double groove forming processing bit 100 is coupled to the electric drill 60.

Afterwards, when the electric drill 60 is rotated, the machining bit 100 is also rotated. The user forms a double groove 30 in the workpiece using this processing bit 100.

First, when the drill bit 40 is brought into contact with the workpiece 50 and then force is applied downward while rotating the machining bit 100, a first groove 10 corresponding to the diameter of the drill bit 40 is formed in the workpiece ( Figure 5a).

As the user continues to apply downward force, the first groove 10 caused by the drill bit 40 becomes deeper and the drill tip 1 comes into contact with the workpiece, forming the second groove 20 (Figure 5b).

The chips of the workpiece 50 generated as the double groove 30 is created are in the long hole 121 of the drill tip 1, the mounting groove 131 of the processing blade 132, and the uneven shape of the rotary hole 3. It can be discharged smoothly through the groove.

Then, as the user continues to apply downward force, the first groove (10) by the drill bit (40) and the second groove (20) by the drill tip (1) become deeper and deeper, causing the rotary sphere (3) to hit the workpiece. contact and the formation of grooves is limited (Figure 5c).

At this time, even if the rotation of the rotary tool (3) is limited by friction with the workpiece, the fixture (2) can rotate due to the sliding member (32), so the drill tip (1) and drill bit (40) integrated with the fixture (2) ) is capable of continuous rotation. Therefore, damage due to sudden rotation restrictions can be prevented.

In this way, when the rotating sphere 3 comes into contact with the workpiece, the formation of the double groove 30 is completed and the user removes the processing bit 100 from the double groove 30. Afterwards, the workpieces can be fastened by fastening the fastening member 70 to the double groove 30 (FIG. 5d).

Meanwhile, the combination of the drill tip (1), fixture (2), and rotary tool (3) can be easily separated from each other, so if any one of them is damaged during repeated work, the damaged component (drill tip or combination) It is possible to reuse the remaining configuration by replacing only the components. As a result, maintenance is convenient and economical.

As described above, the processing bit for forming a double groove is not limited to the configuration and method of the above-described embodiments, but all or part of the embodiments are selectively combined so that various modifications can be made. It may be configured.

Although the detailed description of the present invention described above has been described with reference to preferred embodiments of the present invention, those skilled in the art or those skilled in the art will understand the spirit of the present invention as described in the patent claims to be described later. It will be understood that the present invention can be modified and changed in various ways without departing from the technical scope.

1: Drill tip
11: coupling part
12: body 121: long hole 122: graduation
13: Machining part 131: Mounting groove 132: Machining blade
14: Through hole
2: Fixture 21: Body 22: Coupling surface 23: Binding member
3: Rotating sphere 31: Body 32: Sliding member
10: first groove 20: second groove 30: double groove 40: drill bit 50: workpiece
60: electric drill 70: fastening member
100: processing bit

Claims (6)

A processing bit for forming a stepped double groove on a workpiece by attaching a drill bit,
A through hole is formed in the center through which the drill bit is inserted in the longitudinal direction, a long hole is formed on the side through which the drill bit is exposed to the outside, and a machining blade is formed at the end to form a groove with a larger diameter than the installed drill bit. drill tip,
A fixture that is integrated with the drill tip by having a hole formed in the center through which the drill tip is inserted, and a binding member that penetrates from the outside in the thickness direction and presses the drill bit through the long hole of the drill tip.
A rotary tool rotatably coupled to the fixture, with a hole formed in the center through which the drill tip passes, and which contacts the surface of the workpiece during work to limit the depth of the groove formed by the drill tip on the workpiece.
A processing bit for forming a double groove including. According to paragraph 1,
The drill tip is,
A coupling part that is inserted into and connected to a rotary electric mechanism,
A body part that extends from the coupling part and has a long hole formed in the longitudinal direction on the side, and allows the binding member of the fixture to press the drill bit within the range of the long hole, and
A processing portion formed at an end of the body portion and forming a second groove having a larger diameter than the first groove while being stepped around the first groove formed by the drill bit.
A processing bit for forming a double groove including. According to paragraph 2,
A processing bit for forming a double groove in which a scale is formed on one side of the long hole formed in the body to allow the depth of the second groove to be measured according to the positions of the fixture and the rotary tool. According to paragraph 2,
A processing bit for forming a double groove in which a mounting groove grooved in the longitudinal direction is formed in the processing portion and a processing blade is attached to the mounting groove. According to paragraph 1,
The fixture is,
A body made of a cylindrical member with a hole formed in the center,
A coupling surface formed to protrude around the hole of the body and coupled to the central hole of the rotating sphere to integrate the fixture and the rotating sphere; and
A binding member that penetrates the body in the thickness direction and presses and secures the drill bit through the long hole of the drill tip.
A processing bit for forming a double groove including. According to paragraph 1,
The rotating sphere is,
A body formed with a hole in the center and an irregular groove on one side, and
A sliding member whose outer circumference is attached to a hole in the center of the body, the fixture is coupled to the inner circumference, and which allows the fixture and the rotator to rotate relative to each other.
A processing bit for forming a double groove including.

Images