KR20200006444A - Tool for making holes - Google Patents

Abstract

The present invention relates to a tool for making a hole, capable of easily discharging the residue after the drilling operation and controlling the drilling depth. The tool comprises: an inner body formed with a tool fastening portion at one end extending in the tool length direction, a hollow punch portion at the other end, and a hollow tab portion integrated between the hollow punch portion and the tool fastening portion; an outer body having a female screw formed on an inner circumferential surface thereof to be coupled to a male screw of the hollow tab portion of the inner body so as to adjust a drilling depth of a hole to be machined on an elastic workpiece through a screw rotation with respect to the inner body; an inner block slidably coupled to an inner space of the hollow tab portion and the hollow punch portion of the inner body; and an elastic body supported on the inner body and disposed outside the outer body to provide the inner block with an elastic force when the inner block moves or returns.

Description

Hole making tool {TOOL FOR MAKING HOLES}

The present invention relates to a hole processing tool for drilling holes in a drilling work object having a material that is relatively soft compared to a metal material, such as insulation or insulation of ship cargo or piping, insulation and other chair cushion cloth and sponge.

In general, ships are built to be used in oceans, seas, lakes, rivers, etc. for a long time because structures, attachments, and assemblies of various materials are combined.

The ship is fitted with heat insulating material or heat insulating material for hull or cargo inside of the ship, steel or structural material such as dwelling port, and piping.

For example, the heat insulating material of the ship's main pipe is attached to the outside of the pipe to exhibit the heat insulating and insulating performance, and at this time has a plurality of holes for the discharge of the water condensed by the internal and external temperature difference.

In the case of a chair having a cushion used around the living, there is a case that the chair insulation for discharging the sweat generated from the user when used for a long time also has a plurality of holes.

According to the prior art, the work object which requires a hole processing among the heat insulating material or the heat insulating material is a hole work is made using a tool such as a hollow punch and a hammer.

In addition, in case of drilling holes in specialized equipment or in mass production using punching machine, even if a batch operation is performed by installing a plurality of punches, it is not suitable for the production of small quantities of various types, and the position of the holes may change from product to product. Therefore, at this time, due to the size of the additional device mounted on the punching machine, the situation may be limited to change the hole position.

In addition, even when bringing the pre-punched insulation to the site and working with holes in the same position as the bolt hole, the hole for drain piping, and the fluid discharge passage of the additional installation, manual work for a lot of holes is required. It is becoming.

In particular, the hole processing in the field causes an error in the drilling quality in relation to the skills or proficiency of the user, it is difficult to adjust the force to use the hammer in the hollow punch has a disadvantage that it is very difficult to control the drilling depth.

In particular, the overhead drilling operation, with the upper part of the structure with the object to be projected more like an eave than the lower part and covering the user's head, is not only difficult to process a plurality of holes with a hollow punch and a hammer, but also reduces productivity and the user. It is very likely that musculoskeletal disorders are caused.

In addition, a work object having elasticity such as a sponge, a heat insulating material, and the like after the punching or punching operation, a residue having elasticity remains inside the hollow punch, and there is a problem that it is very difficult to separate the residue from the hollow punch by elastic force and frictional force. .

Therefore, not only can be mounted and used on the electric drill in the field, but also to adjust the drilling depth in order to process the desired drilling depth as well as penetrating during the drilling, it is easy to discharge or separate the residue inside the tool after drilling There is an urgent need for means.

In the present invention, it is possible to control the drilling depth for the work object having a relatively soft and elastic in nature, such as insulation, insulation, etc., can easily discharge the residue by the user after the drilling operation, the moving pin used to remove the residue And the inner block is quickly returned to its original position by the tension spring, so that the tool can be quickly reused, very easy to use and manipulate, and can be mounted on an electric drill to smoothly carry out drilling work. To provide a machining tool.

Technical problems to be achieved in the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned above will be clearly understood by those skilled in the art from the following description. Could be.

In order to solve the problems described above, the present invention, a tool fastening portion is formed at one end extending in the tool longitudinal direction, a hollow punch portion is formed at the other end, and integrally between the hollow punch portion and the tool fastening portion An inner body forming a hollow tab portion; An outer body formed with an inner circumferential surface of a female screw screwed to a male screw of the hollow tab portion of the inner body to adjust a drilling depth of a hole to be machined to a workpiece of elastic material through a screw rotation about the inner body; An inner block slidably coupled to an inner space of the hollow tab portion and the hollow punch portion of the inner body; And an elastic body supported based on the inner body and disposed on the outside of the outer body to provide the inner block with an elastic force when the inner block moves or returns.

The hollow tab portion of the inner body may include a plurality of guide slots extending in the longitudinal direction of the inner body, spaced apart in the circumferential direction of the inner body, and penetrating in the radial direction of the inner body. Can be.

In addition, the outer body is extended in the longitudinal direction of the outer body, and spaced apart in the circumferential direction of the outer body, so as to selectively overlap with the guide slot of the inner body, penetrates in the radial direction of the outer body And a plurality of outer slots having a slot length relatively longer than that of the guide slot, and having a slot width relatively wider than the width of the guide slot.

In addition, the outer body, the first ring portion having a female screw that can be screwed in the rear position of the hollow tab portion of the inner body; A second ring portion having a female screw that can be screwed into a forward position of the hollow tab portion while being spaced apart from the first ring portion; An integral connection part connecting the first ring part and the second ring part to each other; A plurality of screw holes penetrating the outer circumferential surface and the inner circumferential surface of the outer body and spaced apart from each other in the circumferential direction of the outer body with respect to the place other than the outer slot; And a fixing screw screwed to the screw hole to fix the outer body and the inner body to each other.

In addition, the hollow tab portion, the outer diameter relatively larger than the hollow punch portion or the tool fastening portion; And it may have the same inner diameter as the hollow punch portion.

In addition, the hollow tab portion may include a damper block provided at an end of the inner space of the hollow tab portion corresponding to the opposite side of the hollow punch portion.

The hollow tab portion may include: a plurality of pin installation holes spaced apart along the extension direction of the guide slot and formed on an outer circumferential surface of a rear position of the hollow tab portion; And support pins respectively coupled to the pin installation holes and protruding in the radial direction of the hollow tab so that the elastic body can be supported based on the inner body.

The inner block may further include: a groove formed at an end surface of the inner block in contact with the residue so as to push the residue from the work object by the hollow punch part into the internal space of the hollow punch part to the outside of the tool; And moving pins respectively coupled to both sides of an outer circumferential surface of the inner block based on positions spaced rearwardly from the groove portion, respectively, passing through the guide slots and protruding in the radial direction of the hollow tab portion, respectively. .

According to the hole drilling tool according to the embodiment of the present invention, by mounting and using the power tool, it is possible to increase the work convenience compared to the punching operation using a conventional hammer, to maximize the work efficiency, the disease of the musculoskeletal system of the user There is an advantage to prevent.

According to the hole drilling tool according to the embodiment of the present invention, the user rotates the outer body or the inner body by a screw method, by performing the operation by adjusting the projection distance corresponding to the desired drilling depth, the desired drilling depth of the workpiece There is an advantage that the hole can be easily processed.

According to an embodiment of the present invention, there is an advantage that can form a stepped surface at a position corresponding to the depth of drilling, so that excessive drilling does not occur in the thickness direction of the workpiece.

According to the hole machining tool according to the embodiment of the present invention, by fixing the outer body and the inner body with a fixing screw such as a tannery screw, there is an advantage that it is possible to stably maintain the adjusted projection distance.

According to an embodiment of the present invention, by quickly returning the moving pin and the inner block to the original position by using the elastic force of the tension spring, by reducing the reuse time of the tool to reduce the time for the hole machining operation, the residue of the residue generated during the hole machining Since it can be quickly removed and collected, there is an advantage that can be prevented from reducing productivity by improving the inconvenience caused by the removal of residue.

Effects obtained in the present invention are not limited to the above-mentioned effects, and other effects not mentioned above may be clearly understood by those skilled in the art from the following description. will be.

1 is a perspective view of a hole machining tool according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the hole machining tool shown in FIG. 1. FIG.
3 is a cross-sectional view taken along the line AA shown in FIG. 1.
FIG. 4 is a cross-sectional view for describing puncturing depth adjustment of the hole machining tool illustrated in FIG. 3.
FIG. 5 is a cross-sectional view for describing a residue discharge operation of the hole machining tool shown in FIG. 3.
6 to 10 are views for explaining the drilling operation using the hole machining tool shown in FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The detailed description, which will be given below with reference to the accompanying drawings, is intended to explain exemplary embodiments of the present invention and is not intended to represent the only embodiments in which the present invention may be practiced.

In the drawings, parts irrelevant to the description may be omitted, and the same reference numerals may be used for the same or similar elements throughout the specification.

1 is a perspective view of a hole machining tool according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the hole machining tool shown in FIG.

1 and 2, the hole machining tool 10 is used by attaching and detaching a power tool to process a hole in the workpiece of the elastic material.

In consideration of the hole diameter, the hole processing tool 10 may be manufactured for each size corresponding to the hole diameter, that is, it may be composed of a plurality or a set of pieces.

The hole machining tool 10 according to an embodiment may be a depth variable drilling means and a semi-automatic drilling means capable of quickly and easily removing residues.

To this end, the hole machining tool 10 may include an inner body 100, an outer body 200, an elastic body 300, and an inner block 500.

The inner body 100 may be made of a high strength and high elastic metal material for the drill bit.

The inner body 100 may include a tool fastening part 110, a hollow punch part 120, and a hollow tab part 130 integrally formed.

The tool fastening part 110 is formed at one end of the hole machining tool 10 extending in the tool length direction.

Tool fastening unit 110 has a diameter and length that can be fastened to the chuck assembly (see reference numeral '20' of Figure 6) corresponding to the rotational portion or the impact transmission portion of the power tool.

The tool fastening unit 110 may be manufactured based on a standard component size that may be mounted on various electric drill products.

The hollow punch part 120 is formed in the other end of the hole processing tool 10 extended in the tool longitudinal direction.

The diameter (eg, the outer diameter or the inner diameter) of the hollow punch part 120 may be determined in various ways according to the hole processing purpose, use place, and use.

That is, the hollow punch unit 120 may be manufactured in various forms to correspond to the size of the hole to be processed in the workpiece.

Accordingly, the size of the inner body 100 or the size of the hollow punch part 120 (for example, the protruding distance L or the outer diameter and the inner diameter of the hollow punch part 120) may be variously manufactured according to the size of the hole to be processed. Can be set.

In addition, a punching blade 121 for punching the work object of the elastic material is formed integrally inside the end portion of the hollow punch part 120.

Here, the punching blade 121 may mean a slanted cutter inclined toward the center of the hollow punch part 120 in a tube shape or a hollow shape.

A tape measure scale mark 122 may be further formed on the outer circumferential surface of the hollow punch part 120.

In this case, the user can easily visually check the amount of movement of the outer body 200 (for example, the protruding distance L or the drilling depth) according to the screw rotation of the outer body 200 with respect to the inner body 100. The puncture depth to be described later can be easily predicted and adjusted in advance.

The protruding distance L may be a distance between the stepped surface 201 of the outer body 200 and the end of the hollow punch part 120 (eg, the end of the punching edge 121).

Here, the stepped surface 201 of the outer body 200 refers to the end surface of the outer body 200, but has a relatively large area compared to the end of the hollow punch portion 120, the workpiece 30 and the like. It may be a stepped portion as a function of contact with the stop jaw.

The protruding distance L may consequently be a variable puncturing depth in this embodiment.

The stepped surface 201 of the outer body 200 may be a smooth surface processed precisely to be in surface contact with the surface of the work object 30 or the surface of the work guide plate 40.

The stepped surface 201 of the outer body 200 may be a stepped portion as a function of acting as a stop jaw in surface contact with the work object 30 or the work guide plate 40.

The scale of the tape measure scale mark 122 may be determined in proportion to the rotational speed of the outer body 200 or the male screw shape (eg, thread pitch) of the hollow tab 130.

For example, when the user rotates the outer body 200 one or half turn screw R from a reference point (for example, a tape measure mark 122), the outer body 200 is the tool extending direction of the inner body 100. Along the scale interval M (see FIG. 4).

For this function, an indicator mark 205 may be further formed on the outer surface of the outer body 200 to identify the rotation position.

At the time of manufacturing the hole machining tool 10, the marking mark 205 and the tape measure mark 122 may be selectively formed using a fritting technique or an etching technique.

In addition, the outer body 200 includes a plurality of screw holes 203 and fixing screws 210.

Here, the screw hole 203 penetrates the outer circumferential surface and the inner circumferential surface of the outer body 200 on the basis of the place other than the outer slot 202 to be described later, and may be spaced apart in the circumferential direction of the outer body 200. have.

In addition, the fixing screw 210 may be a kind of tannery screw or bolt, and is screwed to the screw hole 203 to serve to fix the outer body 200 and the inner body 100 to each other.

In addition, the outer body 200 may include a flat portion 204 which is relatively smoothly processed relative to the circumferential surface of the outer body 200 on the basis of the inlet of the screw hole 203, respectively.

The planar portion 204 allows a user to easily access and use a tool (not shown) for tightening the set screw 210.

In addition, the user can securely maintain the adjusted protruding distance by fixing the outer body 200 and the inner body 100 with the fixing screw 210.

Even if the external force (eg, shock and vibration) is transmitted according to the application of the power tool, the outer body 200 and the inner body 100 have an advantage of maintaining the fixed state integrated with each other by the fastening force of the fixing screw 210. Have

Thus, the present invention has the effect that the drilling depth can be adjusted very precisely, and the adjusted state can be maintained.

In particular, the workpiece to be processed by the hollow punch unit 120 is a single-layered insulating material formed of the same material and a single layer as the elastic material, or a multi-layered layer such as the first layer 31 and the second layer 32 It may be formed of the same material or different materials, and may be a multi-layer insulating material in which holes are to be processed only in the first layer 31.

For example, FIG. 6 shows the work object 30 corresponding to the multilayer insulation.

That is, the present invention has the advantage of being able to precisely process only the object to be drilled, and to safely protect the non-working object behind or stacked.

Hollow tab portion 130 is formed integrally between the hollow punch portion 120 and the tool fastening portion 110, it can be the basis of the screw rotation for varying the drilling depth.

The external thread is formed outside the hollow tab portion 130.

The male screw of the hollow tab part 130 may mean a depth adjusting screw.

The inside of the hollow tab portion 130 has a hollow space to be a movement path of the inner block 500 to be described later.

For example, the cross-sectional shape of the inner space of the hollow tab 130 is formed to correspond to the cross-sectional shape of the inner block 500.

The inner cross-sectional area of the hollow tab 130 may be formed relatively larger than the cross-sectional area of the inner block 500 in consideration of sliding tolerance or clearance.

This hollow tab portion 130 has a relatively large outer diameter compared to the hollow punch portion 120 or the tool fastening portion 110.

In addition, the hollow tab part 130 has the same inner diameter as the hollow punch part 120.

In addition, the inside of the hollow punch portion 120 and the inside of the hollow tab portion 130 are connected to each other in space.

Therefore, the inner block 500 may repeatedly move smoothly between the inner space of the hollow tab portion 130 and the inner space of the hollow punch portion 120.

The outer body 200 may be formed of the same material as the inner body 100, or may be formed of any one of a metal material, an alloy material, and an engineering plastic material.

The outer body 200 may play a role of adjusting the drilling depth of the hole to be processed in the workpiece of the elastic material through the rotation of the screw for the inner body (100).

To this end, the outer body 200 may have a cylindrical shape, and a female screw screwed to the male screw of the hollow tab 130 of the inner body 100 may be formed on the inner circumferential surface of the outer body 200.

More specifically, the outer body 200 is spaced apart from the first ring portion 207 and the first ring portion 207 having a female thread that can be screwed into the rear position of the hollow tab portion 130 of the inner body 100. Integral connection part 206 which connects the 2nd ring part 208 which has a female thread which can be screwed to the front position of the hollow tab part 130, and the 1st ring part 207 and the 2nd ring part 208 mutually. ).

In addition, the outer body 200 may include an outer slot 202 disposed along the circumferential direction of the outer body 200 with respect to the connection portion 206.

The connector 206 may be provided in singular or plural.

Here, since the connection part 206 is also screwed, it may be screwed to the hollow tab portion 130 of the inner body (100).

In addition, the number and shape of the connecting portion 206 is a case where the guide slot 131 of the inner body 100 is not exposed through the outer slot 202 when rotating the outer body 200 to adjust the depth of drilling. Various changes may be made in preparation.

For example, the connecting portion 206 may be four, as shown in Figure 2, it may be made of two by changing the production.

In this case, the slot width S of the outer slot 202 can be relatively larger when two than when the four connections 206 are.

Therefore, the rotation angle or the amount of rotation of the outer body 200 can be relatively large without dismantling the moving pin 250.

Since the outer body 200 including the connection part 206, the first ring part 207, and the second ring part 208 forms a female thread on an inner circumferential surface thereof, the hollow tab part 130 of the inner body 100 is based on the hollow tab part 130 of the inner body 100. Can act as a depth adjustment tab.

If it has a female screw that can be screwed to the inner body 100, the outer body 200 may be simply made in the form of a cylindrical shape, or a rectangular, hexagonal or polygonal barrel whose outer portion is made of a plurality of polyhedrons It may be manufactured in a form, and may not be limited to a specific shape.

The inner block 500 may be understood as a movable body, a sliding block, a plunger, etc., which can be moved to remove a kind of residue.

The hole machining tool 10 may include a damper block 400 therein for removing shocks and noises that may occur upon return of the inner block 500.

Here, the damper block 400 may be a cushion material or a polymer material such as urethane or silicon for shock attenuation.

The damper block 400 is installed at the end of the inner space of the hollow tab portion 130 corresponding to the opposite side where the hollow punch portion 120 is located.

For example, as illustrated in FIGS. 3 to 5, a plurality of fixing protrusions 133 or an adhesive means, etc., provided along the circumferential direction are further provided at the end of the inner space of the hollow tab part 130.

Here, the size of the inner space surrounded by the plurality of fixing protrusions 133 is relatively small compared to the cross-sectional diameter of the damper block 400, the damper block 400 can be fixed by fit fit.

The damper block 400 serves to absorb the shock transmitted from the inner block 500 through elastic deformation, or to attenuate vibration and noise due to the shock.

That is, the damper block 400 may contact the inner block 500 before the moving pin 520 arrives at the end of the guide slot 131 while the moving pin 520 moves backward, thereby stopping the return of the inner block 500. have.

Therefore, there is an advantage that the impact, vibration, noise generated by the contact between the end portion of the moving pin 520 and the guide slot 131 can be blocked at the source.

The inner block 500 may serve as a plunger for discharging residues introduced into the internal space of the hollow punch part 120 to the outside of the tool.

To this end, the inner block 500 is slidably coupled to the inner space of the hollow tab 130 and the hollow punch 120 of the inner body 100.

In addition, the elastic body 300 serves to provide the elastic force to the inner block 500 when the inner block 500 moves or returns.

For example, the elastic body 300 may be a tension spring that connects between the moving pin 520 and the support pin 140.

Here, the elastic body 300 may be any means of return of any elastic material, so long as it can exert a tensile force, it may not be limited to the tension spring.

The elastic body 300 may be disposed outside the outer body 200 as a plurality (eg, two).

In this case, the ring portions 301 and 302 at both ends of each elastic body 300 may be fitted into the pin body portion 142 of the support pin 140 or the extension portion 522 of the moving pin 520.

In addition, since the elastic body 300 is provided in pairs, the elastic force of the elastic body 300 may be provided to the inner block 500 in a balanced manner.

In addition, since the moving speed or the returning speed of the inner block 500 can be increased by the number of the elastic bodies 300, the inner block 500 has the advantage that can be moved quickly.

In particular, in order for the inner block 500 to receive an elastic force (eg, a tensile force) from the elastic body 300, some characteristic configurations may be required.

For example, a plurality of guide slots 131 that are penetrated are disposed on the circumferential wall of the hollow tab portion 130.

The guide slot 131 may be disposed as many as the number of elastic bodies 300.

The guide slot 131 extends in the longitudinal direction of the hollow tab 130 based on the front position of the hollow tab 130.

The guide slots 131 are spaced apart in the circumferential direction of the hollow tab portion 130 and penetrate in the radial direction of the hollow tab portion 130.

The extending direction of the guide slot 131 may be parallel to the extending direction of the inner space of the hollow tab 130, and as a result, the linear reciprocating motion of the inner block 500 may be smoothly performed.

On the other hand, the pin installation hole 132 and the support pin 140 are disposed in the rear position of the hollow tab portion 130.

Here, the pin installation hole 132 is formed in the outer peripheral surface of the hollow tab part 130 in the state spaced apart along the extension direction of the guide slot 131. As shown in FIG.

The pin installation holes 132 may also be formed in the same number as the number of the elastic bodies 300, that is, a plurality.

The support pin 140 plays a role of supporting the elastic force (eg, tensile force) of the elastic body 300 based on the inner body 100 and in more detail based on the hollow tab portion 130 of the inner body 100. .

The support pins 140 are respectively coupled to the respective pin installation holes 132 of the hollow tab part 130 to protrude in the radial direction of the hollow tab part 130.

Here, the support pin 140 is a screw unit 141 screwed to the hollow tab portion 130 using the pin installation hole 132, and the pin body portion 142 having a smaller protruding length than the moving pin 520. And it may include a bolt head portion 143 formed at the end of the pin body portion 142.

On the other hand, the inner block 500 includes a groove 510 and the moving pin 520.

The groove 510 of the inner block 500 is formed at the end surface of the inner block 500 in contact with the residue.

The groove portion 510 and the peripheral portion of the groove portion 510 during the hole processing may serve as a bite to temporarily hold the residue in the process of changing the corresponding portion of the workpiece to the residue.

In addition, the contact with the residue can be reduced by the groove area of the groove 510 so as to push the residues separated from the work object by the hollow puncher 120 to the internal space of the hollow puncher 120 to the outside of the tool. Therefore, there is an effect that the sticking situation between the residue and the inner block 500 can be prevented in advance.

In addition, by reducing the weight per volume of the inner block 500 by the volume of the groove 510, it is possible to increase the moving speed of the inner block 500.

In addition, the user can easily couple or detach the moving pin 520 to the inner block 500 in the same or similar manner as the bolt fastening.

For example, due to excessive puncturing depth adjustment, a user may rotate the outer body 200 based on the inner body 100 beyond the slot width S of the outer slot 202. In this case, the connection 206 between the outer slots 202 of the outer body 200 may cause interference with the moving pins 520.

Therefore, the user removes the interference by removing or removing the moving pin 520 from the screw hole 501 of the inner block 500, and then rotates the outer body 200 to adjust the protruding distance (L), and then again The moving pin 520 may be recoupled to the screw hole 501 of the inner block 500.

In addition, the user may couple the support pin 140 to the hollow tab 130 in a bolted manner.

The bolt fastening method has an advantage that the assembly, disassembly of the moving pin 520 and the support pin 140 can be easily made, and the amount of the protrusion can be easily adjusted and maintained.

In addition, each of the bolt head portions 143 and 523 of the support pin 140 and the moving pin 520 has a relatively larger diameter than the pin body portion 142 or the extension portion 522, or the ring portion 301. , 302) has a diameter that is relatively larger than the outer diameter of 302).

Accordingly, the bolt heads 143 and 523 have an advantage of preventing the separation of the ring parts 301 and 302 formed at both ends of the elastic body 300, that is, the separation of the elastic body 300.

The moving pins 520 are coupled to both sides of the outer circumferential surface of the inner block 500 on the basis of the position spaced rearward from the groove 510 of the inner block 500.

The moving pins 520 may pass through the guide slots 131 of the hollow tab 130 described above, respectively, and protrude in the radial direction of the hollow tab 130.

For example, the movable pin 520 has a screw portion 521 which is screwed to the outer circumferential surface of the inner block 500, that is, screwed to the screw hole 501 of the outer circumferential surface of the rear side of the inner block 500.

At this time, the screw hole 501 is formed in the hole inlet 502 having a position relatively lower than the outer peripheral surface of the inner block 500.

That is, due to a burr or a sharp portion of a threaded end that may occur due to the threading of the screw hole 501, scratches may be prevented from occurring on the inner circumferential surface of the hollow tab 130.

In addition, since the friction area is reduced by the area of the hole inlet 502, there is an advantage that the movement force of the inner block 500 can be relatively increased.

In addition, the moving pin 520 has an extension 522 having a sliding circumferential surface to reduce the friction on the guide slot 131.

The extension 522 has a smooth surface compared to the threaded, so that it can move smoothly in the guide slot 131.

The extension part 522 may be integrally extended from the screw part 521 to receive the user's finger force, and may be disposed up to an outer position of the guide slot 131.

In addition, the moving pin 520 has a threaded portion 523 formed at the end of the extension portion 522.

 A user may apply a force that can easily and comfortably pull the moving pin 520 and the inner block 500 using his finger through the threaded portion 523 and the extension 522 of the moving pin 520. Can be.

3 is a cross-sectional view taken along the line AA shown in FIG. 1, FIG. 4 is a cross-sectional view for describing a drilling depth control of the hole machining tool illustrated in FIG. 3, and FIG. 5 is a hole machining tool illustrated in FIG. 3. This is a cross-sectional view for explaining the operation of discharging the residue.

Referring to FIG. 3, the diameter D1 of the hollow tab part 130 of the inner body 100 is relatively larger than the diameter D2 of the hollow punch part 120 or the tool fastening part 110.

Since the diameter D1 of the hollow tab portion 130 is relatively large, the outer peripheral surface of the hollow tab portion 130 may be easily processed with a precise male screw.

3 and 4, after the hole processing tool 10 is moved toward the workpiece for hole drilling, the stepped surface 201 of the outer body 200 is in the process of approaching the surface of the hole processing site. By contacting this work object, the effect which can play the role of the stopping jaw which stops the movement of the hole machining tool 10 is exhibited.

By screw rotation R between the outer body 200 and the inner body 100, the outer body 200 moves along the tool extension direction M, as a result of which the drilling depth can be adjusted.

For example, when adjusting the amount of screw rotation of the user, the stepped surface 201 of the outer body 200 may be located closer to the end of the hollow punch part 120.

In this case, the initial protruding distance L1 of FIG. 3 is adjusted to the protruding distance L2 of FIG. 4 which is relatively less protruding, and a punching operation may be performed in which a puncturing depth is made corresponding to the adjusted protruding distance L2. have.

The amount of screw rotation of the outer body 200 may be proportional to the amount of adjustment of the protrusion distances L1 and L2 or the amount of change in the drilling depth.

Therefore, the user may adjust the drilling depth by moving the outer body 200 forward or backward relative to the inner body 100 through the screw rotation R before performing the actual drilling operation.

On the other hand, according to the inner body 100, the inside of each of the hollow punch portion 120 and the hollow tab portion 130 is connected to each other through a space having the same inner diameter.

Therefore, as described below, a smooth moving path of the inner block 500 for removing the residue W (see FIG. 6) generated during the hole processing may be formed in the inner body 100.

In particular, the guide slots 131 of the inner body 100 may be connected to each other in space with respect to the outer slot 202 of the outer body 200.

That is, the outer body 200 includes a plurality of outer slots 202 that can selectively overlap the guide slot 131 of the inner body 100.

 In this case, each of the outer slots 202 extends in the longitudinal direction of the outer body 200, is spaced apart in the circumferential direction of the outer body 200, penetrates in the radial direction of the outer body 200, and guide slots 131. It may have a slot length relatively long compared to the length of), or a slot width (S) relatively wide compared to the width of the guide slot 131.

Therefore, the user can rotate (R) the outer body 200 within a limited range without disassembling the moving pin 520.

4 and 5, the user can move the inner block 500 from the inner space of the hollow tab portion 130 of the inner body 100 toward the inner space of the hollow punch portion 120. The force F1 is applied to the moving pin 520.

In this case, the inner block 500 together with the moving pin 520 may move (eg, move forward) on a user basis.

If there is a residue generated during the hole drilling inside the hollow punch part 120, the moving inner block 500 pushes the residue out of the hollow punch part 120.

In this process, the elastic body 300 is stretched to generate a tensile force F2 (eg, a pulling force).

If the user finishes removing the residue, the user may separate his finger from the moving pin 520.

In this case, the tensile force F2 of the elastic body 300 acts in a direction (for example, a reverse direction) to return the forward or moved inner block 500 and the moving pin 520 to their original positions.

 As a result, the inner block 500 and the moving pins 520 can be quickly returned to their original positions.

In this process, the support pin 140 plays a role of supporting the extension or reduction of the elastic body 300.

In addition, the guide slot 131 of the hollow tab 130 may smoothly guide the linear reciprocating motion of the moving pin 520.

In addition, the outer slot 202 of the outer body 200 has a larger through area than the guide slot 131 can be in contact with the moving pin 520, the inner block 500 and the moving pin 520 It may not affect the linear reciprocating motion.

Hereinafter, the hole processing operation procedure using the hole processing tool 10 is demonstrated.

6 to 10 are views for explaining the drilling operation using the hole machining tool shown in FIG.

Referring to FIG. 6, the user may raise the work guide plate 40 on the work object 30 (see FIG. 6I).

Here, the work object 30 may be a multi-layer cloth or a multilayer insulation having a first layer 31 and a second layer 32.

In addition, the work guide plate 40 may be a thin metal plate having holes marked in advance for convenience of hole processing.

At this time, when the number of holes is small and the position of the holes is not important, the process of placing the work guide plate 40 may be omitted.

The user rotates the outer body 200 and the inner body 100 as described above to each other, and performs the operation of adjusting and fixing the projection distance (L) of the hollow punch unit 120 in advance.

In this case, the protruding distance L may correspond to the thickness of the first layer 31 of the workpiece 30 or may be determined in consideration of the thicknesses of the first layer 31 and the work guide plate 40.

In addition, the protruding distance L refers to the depth of drilling, and for example, the protruding distance L may mean a distance protruding from the stepped surface 201 of the outer body 200.

For example, depending on whether the work guide plate 40 is used or not, the thickness of the first layer 31 of the protruding distance L of the work object 30 or the combined thickness of the work guide plate 40 and the first layer 31 is determined. It may be any one of.

The user fixes or adjusts the depth of drilling as above, and then mounts the hole drilling tool 10 to the chuck assembly 20 of the power tool.

Referring to (II) and (III) of FIG. 6, the user performs the hole work using the major tool and the hole machining tool 10 according to the holes marked on the work guide plate 40.

During the hole processing, the hollow punch 120 of the inner body 100 is to drill the heat insulating material corresponding to the first layer 31 of the workpiece 30.

In addition, the stepped surface 201 of the outer body 200 may contact the surface of the work guide plate 40, or the surface of the first layer 31 when the work guide plate 40 is not used. .

The movement of the power tool and the hole making tool 10 can be stopped by the user.

At this time, the residue W is present inside the hollow punch part 120 of the hole machining tool 10.

In addition, the elastic body 300 is disposed between the moving pin 520 and the support pin 140 in a reduced state.

Referring to (IV) of FIG. 7, after the hole operation, the hole machining tool 10 is separated from the workpiece 30 by the user.

As a result, the hole H is processed in the workpiece | work object 30 by the drilling depth corresponding to the protrusion distance L mentioned above.

In this case, although the hole H is processed in the first layer 31 of the workpiece 30, the hole H may not be formed in the second layer 32.

Referring to FIG. 8V, the residue W remains in the internal space of the hollow punch part 120 of the hole machining tool 10.

In order to remove the residues W, the pushing force F1 of the user's own finger is applied to the moving pins 520 to move the moving pins 520 and the inner block 500 to the front.

Referring to FIG. 9 (VI), due to the movement of the moving pin 520 and the inner block 500, the residue W is pushed out of the hollow punch part 120 by the inner block 500. .

In addition, the elastic body 300 is elongated by the movement of the moving pin 520 and the fixing (eg, support) of the support pin 140 to generate a tensile force (F2) (eg, pulling force).

Referring to FIG. 10 (VII), the residue W may be separated and discharged from the hole machining tool 10 (eg, a natural fall due to gravity) to fall into the inside of the unshown collection bin.

In addition, the user separates his finger from the moving pin 520.

In this case, the tension force F2 of the elastic body 300 quickly returns the inner block 500 and the moving pin 520 to their original position.

Thus, the operator can immediately perform the next hole machining operation.

As such, the present invention can easily and easily discharge or separate the residue remaining in the hole-making tool to the outside without the need for a separate tool, thereby increasing the efficiency of repetitive hole processing and maximize the productivity .

In addition, the present invention has the advantage that can be prevented by the user's musculoskeletal disorders, while reducing the work time and productivity by using mounted on a power tool with high portability and operability.

In addition, the present invention has the advantage that the moving pin is guided by a plurality of guide slots, as a result of the linear reciprocating movement quality of the inner block is very excellent.

In addition, the present invention has the advantage of removing the hassle according to the user's separate operation for removing the residue.

Embodiments of the present invention disclosed in the specification and drawings are only specific examples to easily explain the technical contents of the present invention and aid the understanding of the present invention, and are not intended to limit the scope of the present invention.

Therefore, the scope of the present invention should be construed that all changes or modifications derived based on the technical spirit of the present invention are included in the scope of the present invention in addition to the embodiments disclosed herein.

10 hole drilling tool 100 inner body
110: tool fastening part 120: hollow punch part
130: hollow tab portion 132: guide slot
140: support pin 200: outer body
202: outer slot 210: fixing screw
300: elastomer 400: damper block
500: internal block 520: moving pin

Claims (8)

An inner body forming a tool fastening portion at one end extending in the tool length direction, a hollow punch portion at the other end, and integrally forming a hollow tab portion between the hollow punch portion and the tool fastening portion;
An outer body formed with an inner circumferential surface of a female screw screwed to a male screw of the hollow tab portion of the inner body to adjust a drilling depth of a hole to be machined to a workpiece of elastic material through a screw rotation about the inner body;
An inner block slidably coupled to an inner space of the hollow tab portion and the hollow punch portion of the inner body; And
And an elastic body supported on the inner body and disposed outside the outer body to provide the inner block with an elastic force upon movement or return of the inner block. The method of claim 1,
In the hollow tab portion of the inner body,
And a plurality of guide slots extending in the longitudinal direction of the inner body and spaced apart in the circumferential direction of the inner body and penetrating in the radial direction of the inner body. The method of claim 2,
The outer body,
Extending in the longitudinal direction of the outer body, spaced apart in the circumferential direction of the outer body, penetrating in the radial direction of the outer body so as to selectively overlap with the guide slot of the inner body, the length of the guide slot And a plurality of outer slots having a relatively longer slot length than and having a relatively wide slot width relative to the width of the guide slot. The method of claim 3, wherein
The outer body,
A first ring portion having a female screw that can be screwed into a rear position of the hollow tab portion of the inner body;
A second ring portion having a female screw that can be screwed into a forward position of the hollow tab portion while being spaced apart from the first ring portion;
An integral connection part connecting the first ring part and the second ring part to each other;
A plurality of screw holes penetrating the outer circumferential surface and the inner circumferential surface of the outer body and spaced apart in the circumferential direction of the outer body with respect to the place other than the outer slot; And
And a fixing screw screwed to the screw hole to fix the outer body and the inner body to each other. The method of claim 1,
The hollow tab portion,
A relatively large outer diameter compared to the hollow punch portion or the tool engagement portion; And
The hole processing tool which has the same internal diameter as the said hollow punch part. The method of claim 5, wherein
The hollow tab portion,
And a damper block provided at an end of the inner space of the hollow tab portion corresponding to the opposite side of the hollow punch portion. The method of claim 2,
The hollow tab portion,
A plurality of pin mounting holes spaced apart in the extending direction of the guide slot and formed on an outer circumferential surface of the rear position of the hollow tab portion; And
And support pins respectively coupled to the pin installation holes and protruding in the radial direction of the hollow tab part so that the elastic body can be supported based on the inner body. The method of claim 7, wherein
The inner block,
A groove formed on an end surface of the inner block in contact with the residue so as to push the residue from the object to be separated by the hollow punch part into the internal space of the hollow punch part to the outside of the tool; And
A hole pin coupled to both sides of an outer circumferential surface of the inner block based on a position spaced rearwardly from the groove portion, and moving pins protruding in the radial direction of the hollow tab portion respectively through the guide slots; .

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