KR102129098B1 - Tool for making holes - Google Patents

Abstract

The present invention is a hole processing tool capable of easily discharging remnants after drilling and adjusting the drilling depth, forming a tool fastening part at one end extending in the tool length direction, and forming a hollow punching part at the other end, An inner body having a hollow tab portion integrally formed between the hollow punch portion and the tool fastening portion; An external body formed on an inner circumferential surface of a female screw that is screwed to the male screw of the hollow tab portion of the inner body so as to adjust a drilling depth of a hole to be processed in a work object made of an elastic material through screw rotation with respect to the inner body; An inner block slidably coupled to the inner space of the hollow tab portion of the inner body and the hollow punch portion; And an elastic body supported 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 is moved or returned.

Description

TOOL FOR MAKING HOLES}

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

In general, ships are being constructed to be used in the ocean, sea, lakes, rivers, etc. for a long time because structures, attachments, and assemblies of various materials are combined.

The ship is equipped with a heat insulating material or a heat insulating material for a steel or structural material and piping such as a hull or a cargo hold inside a ship or a residence.

For example, the insulating material of the main pipe of the ship is attached to the outside of the pipe and exhibits heat insulation and heat preservation performance. At this time, it has a plurality of holes for discharging condensed water due to internal and external temperature differences.

In the case of a chair having a cushion used around life, a warming material for a chair is also often provided with a plurality of holes to discharge sweat and the like generated from a user when used for a long time.

According to the prior art, a work object requiring a hole in a heat insulating material or a heat insulating material is made of a hole using a tool such as a hollow punch and a hammer.

In addition, if a hole is drilled in a specialized facility, or when mass-producing using a punching machine, even if a plurality of punches are installed to perform a batch operation, it is not suitable for the case of small-volume production of multiple types, and the position of the hole can be changed for each product. Therefore, at this time, due to the size of the additional device mounted on the punching machine, there is a situation in which restrictions on the hole position change may follow.

Also, even if the preheated insulation material is brought to the site, if the hole is matched with a location such as a bolt hole, a drain pipe hole, or an additional installation fluid discharge passage, a number of holes are required for manual machining. Is becoming.

In particular, the hole processing in the field has a disadvantage in that it is difficult to control the depth of the drilling because it generates an error in the quality of the drilling in relation to the skill or skill of the user concerned, and it is difficult to control the force using the hammer for the hollow punch.

Particularly, the overhead drilling operation in the state where the upper part of the structure with the object to be worked is projected like an eave compared to the lower part and covers the user's head is very difficult to process a plurality of holes with a hollow punch and hammer, as well as reduced productivity and user It is very likely that musculoskeletal disorders are caused.

In addition, a work object having elasticity, such as a sponge or a heat insulating material, has a very difficult problem of separating the residue from the hollow punch by elastic force and frictional force, after the punching or punching operation, an elastic residue remains inside the hollow punch. .

Therefore, not only can it be mounted on an electric drill in the field, but also can be used to process the desired drilling depth as well as through when drilling, and can easily discharge or separate the remnants inside the tool after machining. There is an urgent need for a means that can be done.

In the present invention, it is possible to control the depth of puncture for a work object having a relatively soft and elastic nature due to material characteristics such as a heat insulating material, a heat insulating material, etc., and can easily discharge the residue by a user after the puncturing operation, and the moving pin used for removing the residue. And the inner block is quickly returned to the original position by the tension spring, it is possible to quickly reuse the tool, very easy to use and operate, and can be mounted on an electric drill to smoothly perform drilling operations We want to provide machining tools.

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

In order to solve the problems as described above, the present invention forms a tool fastening part at one end extended in the tool length direction, forms a hollow punch part at the other end, and is integrally formed between the hollow punch part and the tool fastening part. An inner body forming a hollow tab portion; An external body formed on an inner circumferential surface of a female screw that is screwed to the male screw of the hollow tab portion of the inner body so as to adjust a drilling depth of a hole to be processed in a work object made of an elastic material through screw rotation with respect to the inner body; An inner block slidably coupled to the inner space of the hollow tab portion of the inner body and the hollow punch portion; And an elastic body supported 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 is moved or returned.

Further, 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 may be formed in the hollow tab portion of the inner body. Can.

In addition, the outer body, so as to selectively overlap the guide slot of the inner body, extends in the longitudinal direction of the outer body, is spaced apart in the circumferential direction of the outer body, penetrates in the radial direction of the outer body It may include a plurality of external slots having a slot length relatively long compared to the length of the guide slot, and a slot width relatively wide compared to the width of the guide slot.

In addition, the outer body, the first ring portion having a female screw that can be screwed to the rear position of the hollow tab portion of the inner body; A second ring portion having a female screw that can be screwed to a front position of the hollow tab portion in a state spaced from the first ring portion; An integral connecting portion connecting the first ring portion and the second ring portion to each other; A plurality of screw holes penetrating each other on an outer circumferential surface and an inner circumferential surface of the outer body, and spaced apart in the circumferential direction of the outer body; 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, a relatively large outer diameter than the hollow punch portion or the tool fastening portion; And it may have the same inner diameter as the hollow punch.

In addition, the hollow tab portion may include a damper block installed at the end of the inner space of the hollow tab portion corresponding to the opposite side of where the hollow punch portion is located.

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

In addition, the inner block is separated from the work object by the hollow punch portion, the groove formed on the end face of the inner block in contact with the residue so as to push the residue flowing into the inner space of the hollow punch portion out of the tool; And moving pins respectively coupled to both sides of the outer circumferential surface of the inner block based on the position spaced apart from the groove portion, and respectively protruding in the radial direction of the hollow tab portion through the guide slots. .

According to the hole processing tool according to an embodiment of the present invention, by using it mounted on a power tool, it is possible to increase work convenience compared to a conventional punching operation using a hammer, to maximize work efficiency, and to the user's musculoskeletal disorders There is an advantage that can prevent.

According to the hole processing tool according to an embodiment of the present invention, the user rotates the outer body or the inner body in a screw manner to adjust the projecting distance corresponding to the desired drilling depth to perform the operation, thereby providing the desired drilling depth to the workpiece. There is an advantage that the hole can be easily processed.

According to an embodiment of the present invention, by forming a step surface at a position corresponding to the depth of the drilling, there is an advantage that can not cause excessive drilling in the thickness direction of the work object.

According to the hole processing 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 protrusion 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, the tool reuse time is relatively reduced to reduce the hole machining time, and the residue generated during hole machining Since it is possible to perform rapid removal and collection, there is an advantage in that it is possible to prevent productivity deterioration by improving the inconvenience caused by removing residues.

The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned 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.
3 is a cross-sectional view taken along line AA shown in FIG. 1.
4 is a cross-sectional view for explaining the adjustment of the drilling depth of the hole machining tool shown in FIG. 3.
5 is a cross-sectional view for explaining the operation of discharging the residue of the hole processing tool shown in FIG. 3.
6 to 10 are views for explaining a drilling operation using the hole machining tool shown in FIG. 1.

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

DETAILED DESCRIPTION The following detailed description, together with the accompanying drawings, is intended to describe exemplary embodiments of the present invention, and is not intended to represent the only embodiments in which the present invention may be practiced.

In order to clearly describe the present invention 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.

In the drawings, FIG. 1 is a perspective view of a hole processing tool according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the hole processing tool shown in FIG. 1.

1 and 2, the hole processing tool 10 is used by being detachably attached to a power tool to process a hole in a work object made of an elastic material.

Considering 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.

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

To this end, the hole processing 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 elasticity metal material for drill bits.

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

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

The tool fastening part 110 has a diameter and a length that can be fastened to a chuck assembly (see reference numeral '20' in FIG. 6) corresponding to a rotating part or a hitting transmission part of a power tool.

The tool fastener 110 may be manufactured based on a standard part size that can be mounted on various electric drill products.

The hollow punch portion 120 is formed at the other end of the hole processing tool 10 extending in the tool length direction.

The diameter of the hollow punch portion 120 (eg, outer diameter or inner diameter) may be variously determined according to a hole processing purpose, a use place, and a 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 work object.

Therefore, the standard of the inner body 100 or the standard of the hollow punched portion 120 (for example, the protruding distance L or the outer and inner diameter of the hollow punched portion 120) is manufactured in various ways corresponding to the size of the hole to be processed. Can be set.

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

Here, the punching blade 121 may mean a slanted cutter that is inclined toward the center of the hollow punch unit 120 as a tube shape or a hollow shape.

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

In this case, the user can easily check the amount of movement of the outer body 200 according to the rotation of the screw of the outer body 200 based on the inner body 100 (for example, the protruding distance L or the depth of drilling) with the naked eye, eventually The drilling depth, which will 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 portion 120 (eg, the end of the punching blade 121).

Here, the stepped surface 201 of the outer body 200 refers to the end face of the outer body 200, but has a relatively large area compared to the end of the hollow punch portion 120, the work object 30, etc. It may be a step portion as a meaning of contacting and acting as a stop jaw.

As a result, the protruding distance L may be a variable drilling depth in this embodiment.

The stepped surface 201 of the outer body 200 may be a smooth surface that has been precisely processed to make 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 in a sense of serving as a stopper in surface contact with the work object 30 or the work guide plate 40.

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

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

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

At the time of manufacture of the hole processing tool 10, the indicator 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 based on a 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 tanned screw or bolt, and is screwed to the screw hole 203 and serves 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 that is relatively smoothly processed compared to the circumferential surface of the outer body 200 based on the inlet of the screw hole 203, respectively.

Due to the flat portion 204, the user can easily access and use a tool (not shown) for tightening the fixing screw 210.

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

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

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

Particularly, the work object to be machined by the hollow punch portion 120 is a single layer insulating material made of the same material as a single layer as an elastic material, or a multi-layered insulating material such as a first layer 31 and a second layer 32 It may be formed of the same material or different materials, and may be a multi-layer insulating material that needs to process holes only in the first layer 31.

For example, in FIG. 6, a work object 30 corresponding to a multilayer insulation material is shown.

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

The hollow tab portion 130 is integrally formed between the hollow punch portion 120 and the tool fastening portion 110, and may be a base for screw rotation for variable drilling depth.

A male screw is formed outside the hollow tab 130.

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

The interior of the hollow tab portion 130 has a hollow space to be a movement path of the internal 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 portion 130 may be formed relatively larger than the cross-sectional area of the inner block 500 in consideration of sliding tolerance or clearance.

The hollow tap 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 portion 130 has the same inner diameter as the hollow punch portion 120.

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

Therefore, the inner block 500 can repeatedly and smoothly move 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 work object of the elastic material through screw rotation with respect to the inner body 100.

To this end, the outer body 200 has a cylindrical shape, and a female screw that is 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 screw that can be screwed to the rear position of the hollow tab portion 130 of the inner body 100. The second ring portion 208 having a female screw that can be screwed to the front position of the hollow tab portion 130 in a state, and an integral connection portion 206 connecting the first ring portion 207 and the second ring portion 208 to each other ).

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

The connection part 206 may be provided in singular or plural.

Here, since the connection portion 206 is also threaded, 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 when the outer body 200 is rotated to adjust the depth of drilling, the guide slot 131 of the inner body 100 is not exposed through the outer slot 202 In preparation, it may be manufactured in various ways.

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

In this case, the slot width S of the outer slot 202 may be relatively larger when it is two than when it is four connecting portions 206.

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

The outer body 200 including the connecting portion 206, the first ring portion 207, and the second ring portion 208 forms a female thread on its inner circumferential surface, so based on the hollow tab portion 130 of the inner body 100 Can serve as a depth adjustment tab.

If the inner body 100 has a female screw that can be screwed, the outer body 200 may be simply manufactured in the form of a cylindrical shape, or the outer portion of a rectangular, hexagonal or polygonal cylinder made of a plurality of polyhedra. 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 some kind of debris.

The hole processing tool 10 may include a damper block 400 for removing shock and noise that may occur when the inner block 500 is returned therein.

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

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

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

Here, since 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 forcibly fitted and fixed.

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

That is, the damper block 400 may contact the inner block 500 in advance before reaching the end portion of the guide slot 131 while the moving pin 520 is retracting, thereby stopping the return of the inner block 500. have.

Therefore, there is an advantage that the generation of shock, vibration, and noise due to contact between the moving pin 520 and the end portion of the guide slot 131 can be fundamentally blocked.

The inner block 500 may serve as a plunger for discharging residues flowing into the inner space of the hollow punch unit 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 portion 130 and the hollow punch portion 120 of the inner body 100.

In addition, the elastic body 300 plays a role of providing 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, if the elastic body 300 is capable of exerting a tensile force, it may be a return means of any elastic material, and thus may not be limited to a tension spring.

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

At this time, the hook portions 301 and 302 at both ends of each elastic body 300 may be fitted to 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 bodies 300 are provided in pairs, the elastic force of the elastic bodies 300 can be provided to the inner block 500 in a balanced manner.

In addition, since the movement speed or return speed of the inner block 500 can be increased by the number of the elastic bodies 300, as a result, the inner block 500 can be moved quickly.

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

For example, a plurality of guide slots 131 penetrating through the circumferential wall of the hollow tab portion 130 are arranged.

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 penetrated in the radial direction of the hollow tab portion 130.

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

Meanwhile, a pin mounting hole 132 and a support pin 140 are disposed at a rear position of the hollow tab 130.

Here, the pin mounting hole 132 is formed on the outer circumferential surface of the hollow tab 130 in a state that is spaced apart along the extending direction of the guide slot 131.

The pin mounting hole 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 serves to support the elastic force (for example, tensile force) of the elastic body 300 based on the hollow tab portion 130 of the inner body 100 in more detail based on the inner body 100. .

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

Here, the support pin 140 is a threaded portion 141 that is screwed to the hollow tab 130 using a pin mounting hole 132, and a pin body portion 142 having a small protruding length compared to the moving pin 520 And, it may include a bolt head portion 143 formed at the end of the pin body portion (142).

Meanwhile, the inner block 500 includes a groove 510 and a moving pin 520.

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

During the hole processing, the groove portion 510 and the peripheral portions of the groove portion 510 may serve as a bite that temporarily holds the remnant in a process in which the corresponding portion of the work object is changed into a remnant.

In addition, it is possible to reduce the contact with the remnants by the groove area of the groove 510, so as to push the remnants separated from the work object by the hollow punch unit 120 into the interior space of the hollow punch unit 120 to the outside of the tool. Therefore, there is an effect that the sticking situation between the remnants and the inner block 500 can be prevented.

In addition, by reducing the weight per volume of the inner block 500 by the volume of the groove portion 510, the movement speed of the inner block 500 can be increased.

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

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

Therefore, the user removes the interference by removing or dismantling 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 re-engaged to the screw hole 501 of the inner block 500.

In addition, the user can also couple the support pin 140 to the hollow tab 130 by a bolt fastening method.

This bolt fastening method has the advantage of facilitating assembly and disassembly of the moving pin 520 and the support pin 140 so that manufacturing, protruding amount adjustment and maintenance can be easily performed.

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

Therefore, the bolt head portions 143 and 523 have the advantage of preventing the separation of the ring portions 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 respectively coupled to both sides of the outer circumferential surface of the inner block 500 based on 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 portion 130, respectively, and protrude in the radial direction of the hollow tab portion 130, respectively.

For example, the moving pin 520 has a screw portion 521 that 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 inner block 500.

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

That is, due to a burr or a sharp portion of the end of the thread that may occur due to the threading of the screw hole 501, there is an advantage that it is possible to prevent the scratch 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 portion 502, there is an advantage that the moving force of the inner block 500 can be relatively increased.

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

Since the extension portion 522 has a smooth surface compared to that of a thread, it can be smoothly moved in the guide slot 131.

The extension portion 522 may be integrally extended from the screw portion 521 to receive the user's finger force, and may be disposed to an external 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.

The user can easily and comfortably pull the moving pin 520 and the inner block 500 using his fingers through the screw 523 and the extension 522 of the moving pin 520. You can.

3 is a cross-sectional view taken along the line AA shown in FIG. 1, FIG. 4 is a cross-sectional view for explaining the drilling depth adjustment of the hole processing tool shown in FIG. 3, and FIG. 5 is a hole processing tool shown in FIG. It is a sectional view for explaining the operation of discharging residues.

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

Since the diameter D1 of the hollow tab portion 130 is relatively large, the precision processing of the male screw can be easily performed on the outer circumferential surface of the hollow tab portion 130.

Referring to FIGS. 3 and 4, after the hole processing tool 10 is moved toward the work object for hole processing, in the process of approaching the surface of the hole processing site, the stepped surface 201 of the outer body 200 By contacting this work object, an effect capable of serving as a stop jaw for stopping the movement of the hole processing tool 10 is exerted.

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

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

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

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

Therefore, the user can 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, each of the inside 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 will be described later, a smooth movement path of the inner block 500 for removing the residue W (see FIG. 6) generated during hole processing may be formed inside the inner body 100.

In particular, the guide slot 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.

At this time, each outer slot 202 is extended 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, guide slot 131 ) May have a relatively long slot length, or a relatively wide slot width S compared to the guide slot 131.

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

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

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

If there is a residue generated in the hole processing inside the hollow punch unit 120, the moving inner block 500 pushes the residue out of the hollow punch unit 120 to discharge it.

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

If, after removing the residue, the user can separate his or her finger from the moving pin 520.

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

As a result, the inner block 500 and the moving pin 520 can be quickly returned to the original position.

In this process, the support pin 140 serves to support the extension or contraction of the elastic body 300.

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

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

Hereinafter, a description will be given of a hole machining operation sequence using the hole machining tool 10.

6 to 10 are views for explaining a drilling operation using the hole machining tool shown in FIG. 1.

Referring to FIG. 6, the user can put the work guide plate 40 on the work object 30 (see (I) of FIG. 6 ).

Here, the work object 30 may be a multi-layered insulating material having multiple layers of cloth or a first layer 31 and a second layer 32.

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

At this time, if 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 performs an operation of adjusting and fixing the protruding distance L of the hollow punch unit 120 in advance by screwing the outer body 200 and the inner body 100 to each other as described above.

At this time, the protruding distance (L) may correspond to the thickness of the first layer 31 of the object 30, or may be determined in consideration of the thickness of the first layer 31 and the work guide plate 40.

In addition, the protruding distance (L) refers to the depth of the drilling, for example, the hollow punch portion 120 may mean the distance from the stepped surface 201 of the outer body 200.

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

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

Referring to (II) and (III) of FIG. 6, the user performs a hole operation using the electric tool and the hole processing tool 10 according to the hole marked on the operation guide plate 40.

During the hole processing, the hollow punch portion 120 of the inner body 100 pierces the heat insulating material corresponding to the first layer 31 of the work object 30.

In addition, the stepped surface 201 of the outer body 200 may be in contact with the surface of the work guide plate 40, or in the case of not using the work guide plate 40, the surface of the first layer 31. .

The movement of the power tool and the hole processing tool 10 may be stopped by the user.

At this time, the remnant (W) is present inside the hollow punch portion 120 of the hole processing 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, the hole processing tool 10 is separated from the work object 30 by a user after the hole operation.

As a result, the hole H is machined in the work object 30 by the drilling depth corresponding to the above-described protrusion distance L.

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

Referring to (V) of FIG. 8, a residue W remains in the inner space of the hollow punch portion 120 of the hole processing tool 10.

In order to remove the remnants W, the user pushes a force F1 with his or her finger to the moving pin 520 to move the moving pin 520 and the inner block 500 forward.

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

In addition, the elastic body 300 is stretched 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, a pulling force).

Referring to (VII) of FIG. 10, the remnants W may be separated and discharged from the hole processing tool 10 (eg, natural drop by gravity) and fall into the inside of an unshown collection box.

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

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

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

As described above, the present invention can automatically discharge or separate the remnants remaining in the hole machining tool to the outside without the need for a separate tool, thereby increasing the efficiency of repetitive hole machining and maximizing productivity. .

In addition, the present invention has the advantage of being able to prevent the musculoskeletal disorders of the user while reducing the working time and improving productivity by being mounted on a power tool having high portability and operability.

In addition, according to the present invention, since the moving pin is guided by a plurality of guide slots, as a result, the linear reciprocating quality of the inner block is very excellent.

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

The embodiments of the present invention disclosed in the present specification and drawings are merely to provide a specific example to easily explain the technical content of the present invention and to understand the present invention, and are not intended to limit the scope of the present invention.

Therefore, the scope of the present invention should be interpreted as including all the modified or modified forms derived based on the technical spirit of the present invention in addition to the embodiments disclosed herein.

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

Claims (8)

An inner body forming a tool fastening part at one end extending in the tool length direction, a hollow punch part at the other end, and a hollow tab part integrally formed between the hollow punch part and the tool fastening part;
An external body formed on an inner circumferential surface of a female screw that is screwed to the male screw of the hollow tab portion to adjust a drilling depth of a hole to be processed in a work object through screw rotation with respect to the internal body;
An inner block slidably coupled to the inner space of the hollow tab portion and the hollow punch portion; And
The elastic body is supported on the basis of the inner body and is disposed outside the outer body so as to provide the inner block with elastic force when the inner block is moved or returned.
In the hollow tab portion, a hole processing tool in which a damper block is installed at the end of the inner space corresponding to the opposite side of the location where the hollow punch portion is located. According to claim 1,
In the hollow tab portion,
A hole machining tool extending in the longitudinal direction of the inner body, spaced apart in the circumferential direction of the inner body, and formed with a plurality of guide slots penetrating in the radial direction of the inner body. According to claim 2,
The outer body,
To be selectively overlapped with the guide slot of the inner body, it extends in the longitudinal direction of the outer body, is spaced apart in the circumferential direction of the outer body, penetrates in the radial direction of the outer body, and the length of the guide slot Hole processing tool comprising a plurality of outer slots having a relatively long slot length, and a relatively wide slot width compared to the width of the guide slot. The method of claim 3,
The outer body,
A first ring portion having a female screw that can be screwed to a rear position of the hollow tab portion;
A second ring portion having a female screw that can be screwed to a front position of the hollow tab portion while being spaced from the first ring portion;
An integral connecting portion connecting the first ring portion and the second ring portion to each other;
A plurality of screw holes penetrating the outer circumferential surface and the inner circumferential surface of the outer body with respect to a place other than the outer slot, and spaced apart in the circumferential direction of the outer body; And
A hole processing tool comprising a screw that is screwed to the screw hole to fix the outer body and the inner body to each other. According to claim 1,
The hollow tab portion,
A relatively larger outer diameter than the hollow punch portion or the tool fastening portion; And
A hole processing tool having the same inner diameter as the hollow punch portion. delete According to claim 2,
The hollow tab portion,
A plurality of pin mounting holes formed at an outer circumferential surface at a rear position of the hollow tab part by being spaced apart along the extending direction of the guide slot; And
A hole processing tool comprising; a support pin that is respectively coupled to the pin mounting hole and protrudes in the radial direction of the hollow tab so that the elastic body can be supported based on the inner body. The method of claim 7,
The inner block,
A groove portion formed on an end surface of the inner block in contact with the residue so as to push the remnants separated from the work object by the hollow punch unit into the inner space of the hollow punch unit to the outside of the tool; And
A hole processing tool including; moving pins respectively coupled to both sides of the outer circumferential surface of the inner block based on the position spaced apart from the groove portion, and respectively protruding in the radial direction of the hollow tab through the guide slots. .

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