KR200485833Y1 - Hole drilling device for airplane exterior - Google Patents

Hole drilling device for airplane exterior Download PDF

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Publication number
KR200485833Y1
KR200485833Y1 KR2020160005001U KR20160005001U KR200485833Y1 KR 200485833 Y1 KR200485833 Y1 KR 200485833Y1 KR 2020160005001 U KR2020160005001 U KR 2020160005001U KR 20160005001 U KR20160005001 U KR 20160005001U KR 200485833 Y1 KR200485833 Y1 KR 200485833Y1
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KR
South Korea
Prior art keywords
drill bit
pneumatic cylinder
main body
apparatus main
aircraft
Prior art date
Application number
KR2020160005001U
Other languages
Korean (ko)
Inventor
양재렬
Original Assignee
삼흥정공 주식회사
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Priority to KR2020160005001U priority Critical patent/KR200485833Y1/en
Application granted granted Critical
Publication of KR200485833Y1 publication Critical patent/KR200485833Y1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B23B45/04—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by fluid-pressure or pneumatic power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B23Q11/0046—Devices for removing chips by sucking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1845—Means for removing cut-out material or waste by non mechanical means
    • B26D7/1863—Means for removing cut-out material or waste by non mechanical means by suction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/16—Perforating by tool or tools of the drill type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/32—Hand-held perforating or punching apparatus, e.g. awls
    • B26F1/34—Hand-held perforating or punching apparatus, e.g. awls power actuated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2215/00—Details of workpieces
    • B23B2215/04—Aircraft components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2250/00—Compensating adverse effects during turning, boring or drilling
    • B23B2250/12—Cooling and lubrication
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2270/00—Details of turning, boring or drilling machines, processes or tools not otherwise provided for
    • B23B2270/02—Use of a particular power source
    • B23B2270/027—Pneumatics

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

The present invention relates to an exterior material hole drilling apparatus for an aircraft, and more particularly, it is possible to stably form a hole formed in an exterior material of an aircraft when a plurality of aircraft exterior materials constituting the aircraft body are connected or various facilities are installed And more particularly, to an exterior material hole drilling apparatus for aircraft capable of forming a high quality aircraft body by preventing drastic holes from being generated. The present invention relates to an apparatus for drilling an outer casing for an aircraft with a drill bit coupled to a front end thereof and an air motor for rotating the drill bit is built in and the drill bit rotated by the air pressure of the air motor is advanced, ; A driving unit provided on the outside of the apparatus main body for driving the moving unit of the apparatus body forward and backward so that the drill bit rotated by the air motor can be moved forward and backward; And a detachable portion provided at a front end portion of the apparatus body so as to be positioned on an outer circumferential surface of the drill bit.

Figure R2020160005001

Description

[0001] Hole drilling device for airplane exterior [0002]

The present invention relates to an exterior material hole drilling apparatus for an aircraft, and more particularly, it is possible to stably form a hole formed in an exterior material of an aircraft when a plurality of aircraft exterior materials constituting the aircraft body are connected or various facilities are installed And more particularly, to an exterior material hole drilling apparatus for aircraft capable of forming a high quality aircraft body by preventing drastic holes from being generated.

Carbon fiber reinforced composite materials, which are carbon fiber composite materials, are lightweight and have excellent mechanical properties such as strength and rigidity, and are widely used in aircraft, spacecraft, automobiles, railway vehicles, ships, sports goods, and computer parts.

Carbon fibers and glass fibers are mainly used as reinforcing fibers used in such composite materials.

The carbon fiber reinforced composite material is a carbon fiber reinforced composite material composed of a carbon fiber and a carbonaceous matrix. The carbon fiber reinforced composite material is excellent in mechanical strength and modulus of elasticity, and has a low density and flame retardancy.

Korean Patent Laid-Open No. 10-2004-0029073, for example, relates to a carbon fiber reinforced plastic (CFRP) plate and a method of manufacturing the same, and Korean Patent Laid-Open No. 10-2004-0029073 discloses a method of reinforcing a fabric made of carbon fiber (CFRP) plate material having a light weight, high rigidity and high strength as a plate material obtained by applying a gel coat, a coating or a combination thereof to a plate material made of CFRP as a base material and a manufacturing method thereof .

However, the carbon fiber reinforced plastic used in the composite material as in the prior art has a disadvantage that the elastic modulus is not sufficient and the flexural strength is low.

Glass fiber reinforced plastic (GFRP), which is distinguished from carbon fiber-reinforced plastics, is a material that combines aromatic nylon fibers such as glass fiber, carbon fiber, and Kevlar with thermosetting resins such as unsaturated polyester and epoxy resin It is stronger than iron, lighter than aluminum, rusty and easy to process.

The glass fiber reinforced plastic has high strength and excellent tensile properties by making the glass filament into a winding shape or a fabric shape and then hardening it by impregnating the resin.

When such CFRP or GFRP is used as an exterior material of an aircraft, several tens to several thousands of holes should be formed. For this purpose, a hole should be formed using a separate drilling apparatus.

In particular, in the case of the exterior material of an aircraft, there is no error in forming a hole. For this purpose, a skilled worker performs a drilling operation while applying a pressure of several to several tens of times using a drilling device. Further, in order to eliminate an error of a hole to be drilled, a worker must perform a drilling operation while applying a pressure to a workforce, thereby increasing the fatigue of a worker.

In addition, drilling equipment is heavy, the outer material is hard, and a lot of physical power is consumed. In order to drill a hole, it is necessary for the skilled person to have moisture, the non-expert to work more than three times as much as the skilled worker, There has been a problem in that the defect rate due to the drilling operation is increased, and there is a problem that the inner circumferential surface of the hole is processed again after the drilling operation, and a lot of manpower is required for the subsequent finishing work.

Therefore, a separate drilling apparatus is needed to solve the above problems.

Korean Patent Publication No. 10-2006-86582

The object of the present invention is to solve the above-mentioned problems of the present invention, and it is an object of the present invention to stably form a hole formed in an exterior material of an aircraft when a plurality of aircraft exterior materials constituting a body of an aircraft are connected, And it is an object of the present invention to provide an exterior material hole drilling apparatus for an aircraft which can remarkably reduce the fatigue of an operator and prevent formation of defective holes and to form a high quality aircraft body.

According to an aspect of the present invention, there is provided a drill bit having a front end coupled to a drill bit, and an air motor for rotating the drill bit is installed so that the drill bit rotated by the air pressure of the air motor is advanced, An apparatus body configured to drill exterior material; A driving unit provided on the outside of the apparatus main body for driving the moving unit of the apparatus body forward and backward so that the drill bit rotated by the air motor can be moved forward and backward; And a detachable portion provided at a front end portion of the apparatus body so as to be positioned on an outer circumferential surface of the drill bit.

In one embodiment, the drill bit has a coolant supply pipe formed therein, and the coolant is supplied from the coolant supply unit on the outside of the apparatus main body through the coolant supply pipe and discharged to the front end of the drill bit.

In one embodiment, the drive unit includes a pneumatic cylinder, which is spaced a predetermined distance from the outer circumferential surface of the apparatus main body, and pushes the drill bit forward; A shock absorber provided at a side of the pneumatic cylinder, the shock absorber being spaced a predetermined distance from the outer circumferential surface of the apparatus main body; A fixing member attached to the fixed portion of the apparatus main body and coupled to the shock absorber and one end of the pneumatic cylinder; And a moving member attached to a moving part of the apparatus body and coupled to the other end of the shock absorber and the pneumatic cylinder.

In one embodiment, the shock absorber is configured to advance the pneumatic cylinder at a constant speed by buffering the excessive advance of the pneumatic cylinder by an impact of air pressure momentarily applied to the pneumatic cylinder when the pneumatic cylinder is advanced, The drill bit is configured to be reversed.

In an exemplary embodiment, the detachable portion may include a guide plate having an insertion hole into which a front end of the apparatus main body is inserted, the guide plate being detachably attachable to a surface of the outer casing for the aircraft; A fixing bolt provided on both sides of the insertion hole; And a locking washer interposed in the space between the fixing bolt and the guide plate to lock or unlock the apparatus main body between the fixing bolt and the guide plate by rotation.

In one embodiment, the apparatus main body further includes a chip discharge pipe through which chips generated during drilling of the exterior material for aircraft through the drill bit are discharged.

In one embodiment, the apparatus main body has a grip portion coupled to a rear end portion opposite to the drill bit, and the grip portion is provided with a switch for operating the air motor.

In one embodiment, the moving member transmits forward and backward driving force of the pneumatic cylinder to the moving unit. When the pneumatic cylinder advances, the moving unit also advances. When the pneumatic cylinder is moved backward, .

In one embodiment, the cutting chip is discharged by the negative pressure of the suction device coupled to the end of the chip discharge pipe.

In one embodiment, when the switch is turned off, the pneumatic cylinder is returned to the original state by the elastic force of a spring installed in the shock absorber.

According to the present invention, it is possible to stably form the holes formed in the exterior material of the aircraft when connecting the exterior materials for a plurality of aircraft or attaching various facilities, So that productivity can be improved.

Secondly, since the operator does not need to form holes through the hand tools as in the conventional art, the fatigue of the supplier can be remarkably reduced.

Third, since the present invention uses the outer casing material hole drilling device of the present invention, it is possible to minimize the occurrence of bad holes and to form a high quality aircraft body, thereby improving the productivity and saving the work flow.

1 is a front view showing a state of an exterior material hole drilling apparatus of the present invention in a state in which a drill bit is advanced.
2 is a plan view of Fig.
Fig. 3 is a front view showing the appearance of the exterior material hole drilling apparatus of the present invention with the drill bit retracted.
4 is a view showing a state of the drill bit in the present invention.
FIGS. 5 to 9 are views showing the state of use of the exterior material hole drilling apparatus of the present invention, and sequentially showing a process of binding and drilling an exterior material hole drilling apparatus for an aircraft to the surface of an interior material for an aircraft.

In order to fully understand the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Further, the detailed description of the known functions and configurations that are considered to be unnecessarily blurring the gist of the present invention is omitted.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a front view showing an exterior material hole drilling apparatus of the present invention in a state in which a drill bit is advanced, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a cross- Fig. 4 is a view showing a state of a drill bit in the present invention. Fig.

1 to 4, an outer material hole drilling apparatus for an aircraft according to the present invention includes a drill bit 110 coupled to a front end thereof and an air motor (not shown) for rotating the drill bit 110 And the drill bit 110 rotated by the air pressure of the air motor is advanced to drill the outer casing 200 for the aircraft. The apparatus main body 100 may be configured to have a size that the operator can grasp by hand, and may be configured to be gripped through a separate gripping device to form a larger hole.

In addition, the apparatus main body 100 has a grip portion 102 coupled to a rear end portion opposite to the drill bit 110, and a switch 103 for operating an air motor is provided in the grip portion. Therefore, the switch 103 is pressed to drive the apparatus main assembly 100 while holding the grip portion 102 through the hand or the gripping device of the operator.

The apparatus main body 100 may further include a chip discharge pipe 140 through which chips generated when drilling the outer casing 200 through the drill bit 110 are discharged. Therefore, the cutting chip generated in the process of forming the hole in the interior material 200 for the aircraft while rotating the drill bit 110 is discharged to the chip discharge pipe 140 through the thread formed on the outer peripheral surface of the drill bit 110. As described above, since the suction device (not shown) is coupled to the end of the chip discharge pipe 140, the cutting chip is configured to be discharged by the negative pressure (pneumatic pressure) of the suction device.

The moving part 100b of the apparatus main body 100 is moved forward and backward so that the drill bit 110 rotated by the air motor can advance (hole forming direction) And a driving unit 120 for driving backward. The drive unit 120 includes a pneumatic cylinder 124 spaced a predetermined distance from the outer circumferential surface of the apparatus main body 100 and pushing the drill bit 110 forward, A shock absorber 121 provided at a side of the pneumatic cylinder 124 and spaced a predetermined distance from an outer circumferential surface of the apparatus main body 100; a shock absorber 121 attached to the fixed portion 100a of the apparatus main body 100, A shock absorber 121 and a pneumatic cylinder 124 attached to a moving part 100b of the apparatus main body 100 and fixed to the one end of the pneumatic cylinder 124, And a moving member 123 which is coupled to the other end of the moving member 123. The moving member 123 transmits the forward and backward driving force of the pneumatic cylinder 124 to the moving unit 100b so that when the pneumatic cylinder 124 advances, the moving unit 100b also advances and the pneumatic cylinder 124 The moving part 100b also moves backward. Of course, when the moving part 100b advances, the drill bit 110 advances, and when the moving part 100b moves backward, the drill bit 110 also moves backward. Although the pneumatic cylinder 124 is shown in FIG. 2 as two, it may be composed of one or more than one, depending on the size and diameter of the apparatus main body 100.

On the other hand, when the switch 103 is off, the pneumatic cylinder 124 is in the reverse state (see Fig. 3) ). The air motor causes the pneumatic cylinder 124 to advance while simultaneously rotating the drill bit 110 by the air pressure when the switch 103 is turned on.

When the pneumatic cylinder 124 is advanced, the shock absorber 121 advances at a constant speed by buffering the excessive advance of the pneumatic cylinder 124 by an impact of air pressure instantaneously applied to the pneumatic cylinder 124 . That is, when the pneumatic cylinder 124 is advanced, the shock absorber 121 applies a constant force to the pneumatic cylinder 124 in the reverse direction so as to resist the advancement of the pneumatic cylinder 124, do. The shock absorbing force of the shock absorber 121 is affected by the amount of fluid flowing through the inside of the shock absorber 121 per hour, more precisely, by the force applied to the shock absorber 121 by the fluid contained in one of the chambers (not shown) (The fluid that has escaped to the outside of the shock absorber 121 enters the other chamber (not shown) of the shock absorber 121, and thus the fluid in the shock absorber 121 circulates between the two chambers) . Such a fluid discharge can be controlled by a separate valve 125. That is, the buffering force is varied according to the opening degree of the valve 125. When the amount of the fluid per hour is large, the buffering force is small. When the amount of fluid per hour is small, the buffering force is increased. When the switch 103 is turned off, the pneumatic cylinder 124 is returned to the original position by the elastic force of a spring (not shown) provided in the shock absorber 121, And then backward to exit the hole (see FIG. 3).

The outer surface of the pneumatic cylinder 124 and the outer surface of the pneumatic cylinder 124 are exposed to the outside of the pneumatic cylinder 124, The interaction between the absorbers 121 enables this.

Meanwhile, a detachable part 130 is provided at the front end of the apparatus main body 100 so as to be positioned on the outer peripheral surface of the drill bit 110. The detachable part 130 may include an insertion hole 132 into which the front end of the apparatus main body 100 is inserted and which can be attached to or detached from the surface of the outer casing 200, A fixing bolt 133 provided on both sides of the insertion hole 132 and a fixing bolt 133 interposed in the space between the fixing bolt 133 and the guide plate 131, And a locking washer 134 that locks or unlocks between the guide plate 133 and the guide plate 131.

The drill bit 110 is provided with a cutting oil supply pipe 111 at its inner side and the cutting oil is supplied from the cutting oil supply unit 101 outside the apparatus main body 100 through the cutting oil supply pipe 111, And is discharged to the front end of the housing 110. The supply of coolant to the drill bit 110 in this way is intended to prevent wear of the drill bit 110 and to cool the heat generated as the drill bit 110 rotates.

Hereinafter, the use state of the exterior material hole drilling apparatus of the present invention constructed as described above will be described.

5, the operator first aligns the insertion hole 132 at the position to be drilled, and then attaches the guide plate 131, and then positions the front end of the apparatus main body 100 at the position of the insertion hole 132.

Then, the locking washer 134 is rotated 90 degrees as shown in FIG. 6 to be interposed between the guide plate 131 and the fixing bolt 133.

When the locking washer 134 is fixed between the guide plate 131 and the fixing bolt 133, the switch 103 is turned on to drive the air motor so that the drill bit The operation for pulling out the air bag 110 to the exterior material 200 for the aircraft is repeated to drill the exterior material 200 for the airplane.

8, the locking washer 134 is rotated again to release the coupling from the guide plate 131 and the fixing bolt 133. Thereafter, as shown in FIG. 9, The apparatus main body 100 is disengaged from the guide plate 131 and the fixing bolt 133 and then the drilling operation is performed through the above process at another position of the aircraft outer casing 200 .

As described above, when the outer casing 200 for an aircraft is drilled through the outer casing hole drilling apparatus of the present invention, it is possible to drill the outer casing 200 more stably, thereby significantly reducing the fatigue of the operator, It is possible to form a high-quality aircraft body since no bad holes are generated.

It is to be understood that the embodiments of the present invention are merely exemplary and that various modifications and equivalent embodiments may be possible without departing from the scope of the present invention. . Therefore, it is to be understood that the present invention is not limited to the form described in the foregoing description. Therefore, the true scope of technical protection of this invention should be determined by the technical idea of the appended utility model registration claim. It is to be understood that the appended claims are intended to cover all such modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

100: Apparatus main body 100a:
100b: moving part 101: cutting oil supply part
102: grip portion 103: switch
110: Drill bit 111: Cutting oil supply pipe
120: Driving unit 121: Shock absorber
122: fixing member 123: moving member
124: pneumatic cylinder 125: valve
130: detachable part 131: guide plate
132: insertion hole 133: fixing bolt
134: locking washer 140: chip discharge pipe
200: exterior material for aircraft

Claims (10)

An air motor for rotating the drill bit 110 is installed so that the drill bit 110 rotated by the air pressure of the air motor is advanced and the outer casing 200 The apparatus body 100 being configured to drill the drill;
The moving part 100b of the apparatus main body 100 is moved forward and backward so that the drill bit 110 rotated by the air motor can be moved forward and backward A driving unit 120; And
And a detachable part (130) provided at a front end of the apparatus main body (100) so as to be positioned on the outer peripheral surface of the drill bit (110)
The attaching / detaching unit (130)
A guide plate 131 which is detachably mountable on the surface of the outer casing 200 and on which an insertion hole 132 into which the front end of the apparatus main body 100 is inserted is formed;
Fixing bolts 133 provided on both sides of the insertion hole 132; And
The locking bolt 133 is inserted into the space between the fixing bolt 133 and the guide plate 131 and is locked between the fixing bolt 133 and the guide plate 131 by rotation to lock or unlock the apparatus body 100. [ And a washer (134). ≪ / RTI > The method according to claim 1,
The drill bit (110)
A cutting oil supply pipe 111 is formed at the inner side of the drill bit 110 and the cutting oil is supplied from the cutting oil supply unit 101 outside the apparatus body 100 through the cutting oil supply pipe 111 and discharged to the front end of the drill bit 110 An exterior material hole drilling device for aircraft. The method according to claim 1,
The driving unit 120 includes:
A pneumatic cylinder 124 spaced a predetermined distance from the outer peripheral surface of the apparatus main body 100 and pushing the drill bit 110 forward;
A shock absorber 121 provided at a predetermined distance from the outer peripheral surface of the apparatus main body 100 and provided at a side of the pneumatic cylinder 124;
A fixing member 122 attached to the fixed portion 100a of the apparatus main body 100 and coupled to one end of the shock absorber 121 and the pneumatic cylinder 124; And
And a moving member 123 attached to the moving part 100b of the apparatus main body 100 and coupled to the shock absorber 121 and the other end of the pneumatic cylinder 124. [ Hole drilling device. The method of claim 3,
The shock absorber (121)
The pneumatic cylinder 124 is prevented from excessively advancing by an impact of air pressure instantaneously applied to the pneumatic cylinder 124 when the pneumatic cylinder 124 is advanced,
Wherein the drill bit (110) is configured to be reversed when the switch (103) is turned off. delete The method according to claim 1,
The apparatus main body 100 includes:
Further comprising a chip discharge pipe (140) for discharging cutting chips generated when the outer casing (200) for an aircraft is drilled through the drill bit (110). The method according to claim 1,
The apparatus main body 100 includes:
Wherein a grip portion (102) is coupled to a rear end portion opposite to the drill bit (110), and a switch (103) for operating the air motor is provided in the grip portion Drilling device. The method of claim 3,
The moving member 123 transmits forward and backward driving force of the pneumatic cylinder 124 to the moving unit 100b,
Wherein when the pneumatic cylinder (124) is advanced, the moving part (100b) is also advanced, and when the pneumatic cylinder (124) is moved backward, the moving part (100b) is also moved backward. The method according to claim 6,
Wherein the cutting chip is discharged by a negative pressure of a suction device (not shown) coupled to an end of the chip discharge pipe (140). 5. The method of claim 4,
When the switch 103 is turned off, the pneumatic cylinder 124 is returned to the original state by an elastic force of a spring (not shown) provided in the shock absorber 121 Drilling device.
KR2020160005001U 2016-08-26 2016-08-26 Hole drilling device for airplane exterior KR200485833Y1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109006193A (en) * 2018-09-27 2018-12-18 洛宁华翔农业科技开发有限公司 A kind of mushroom puncher being easily installed disassembly drill bit
CN113942075A (en) * 2021-08-30 2022-01-18 安徽华猫软包装有限公司 Plastic product perforating device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09225897A (en) * 1996-02-14 1997-09-02 Synx Kk Angular hole machining device
US5813301A (en) * 1993-02-03 1998-09-29 Amada Metrecs Company, Limited Punching tool
KR20060086582A (en) 2005-01-27 2006-08-01 이경근 Titanium alloy sheets boring punching device for a aircraft
JP2011101931A (en) * 2009-11-11 2011-05-26 Ｎｅｘｔ Ｉ＆Ｄ株式会社 Punching device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5813301A (en) * 1993-02-03 1998-09-29 Amada Metrecs Company, Limited Punching tool
JPH09225897A (en) * 1996-02-14 1997-09-02 Synx Kk Angular hole machining device
KR20060086582A (en) 2005-01-27 2006-08-01 이경근 Titanium alloy sheets boring punching device for a aircraft
JP2011101931A (en) * 2009-11-11 2011-05-26 Ｎｅｘｔ Ｉ＆Ｄ株式会社 Punching device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109006193A (en) * 2018-09-27 2018-12-18 洛宁华翔农业科技开发有限公司 A kind of mushroom puncher being easily installed disassembly drill bit
CN113942075A (en) * 2021-08-30 2022-01-18 安徽华猫软包装有限公司 Plastic product perforating device
CN113942075B (en) * 2021-08-30 2023-01-31 安徽华猫软包装有限公司 Plastic product perforating device

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