WO2020175850A1 - 그라인더 휠 고정장치 - Google Patents

그라인더 휠 고정장치 Download PDF

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Publication number
WO2020175850A1
WO2020175850A1 PCT/KR2020/002457 KR2020002457W WO2020175850A1 WO 2020175850 A1 WO2020175850 A1 WO 2020175850A1 KR 2020002457 W KR2020002457 W KR 2020002457W WO 2020175850 A1 WO2020175850 A1 WO 2020175850A1
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WIPO (PCT)
Prior art keywords
grinder wheel
boss
wheel
hole
fixing
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Ceased
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PCT/KR2020/002457
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English (en)
French (fr)
Inventor
안상훈
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Individual
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Individual
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Publication of WO2020175850A1 publication Critical patent/WO2020175850A1/ko
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/003—Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant

Definitions

  • the present invention relates to a grinder wheel fixing device. More specifically, the motor shaft rotating by the power of the motor and the wheel fixing nut are screwed together to quickly and easily fix and disassemble the grinder wheel. It is related to the grinder wheel fixing device which makes it easy to replace and separate collection by installing the fixing nut detachably on the grinder wheel.
  • the work piece is cut according to the design, or the surface is polished or ground.
  • a grinder wheel is used to remove impurities and obtain gloss.
  • the grinder wheel is installed on a hand grinder made of a small motor so that the worker can carry it with his or her hands, or it is installed on a large motor with relatively high output that is placed in the work site and is used to process long and thick workpieces. .
  • At least two nuts on the rotating motor shaft are configured to be screwed together with the motor shaft in contact with each of the lower and virtual surfaces.
  • No. 10-2018-0137700 Grinder Wheel Fixing Module and Grinder Wheel Fixing Method
  • the first through hole extending along the axial direction in the center, and the center of the first through hole
  • a first protrusion protruding toward and extending in a direction opposite to the first radial direction, protruding from the side of the first through hole toward the center, and in a second radial direction intersecting the first radial direction.
  • a second protrusion extending along the opposite direction, a third protrusion protruding from the side of the first through hole toward the center and extending along the opposite direction of the third radial direction, which crosses each of the first and second radial directions
  • a grinder wheel having a disk shape
  • a fixing bolt protruding from the grinder body and extending along the axial direction to transmit rotational power generated from the grinder body to the grinder wheel
  • a material through which the fixing bolt passes It includes a 2 through hole and a seating groove provided adjacent to the second through hole, and supports the grinder wheel.
  • An elastic member accommodating the fixing bolt and a nut body for screwing the fixing bolt with the fixing bolt through the first through hole and the second through hole, the first wing extending from the nut body in the first radial direction, and the nut
  • the second wing extending from the body in the second radial direction, the third wing extending from the nut body in the third radial direction, the first wing extending along the opposite direction of the axial direction and equipped with the first wing
  • each protrusion of the fixing member is fixed to hang in the groove of the second coupling member.
  • the coupling member is configured so that the elastic member is compressed and fixed tightly.
  • the first and second coupling members provided to fix the grinder wheel
  • the fixing member solved the problem that cannot be disassembled due to the damage of the conventional nut, but there was a problem in that the number of processes for fixing increased and the production cost increased due to the increase of components.
  • the grinder wheel is fastened by a spiral fastening method, but the screw thread is not damaged even when working on the workpiece, making disassembly easy.
  • fast and easy fixing and disassembly by reducing the number of components to a minimum. 2020/175850 1»(:1 ⁇ 1 ⁇ 2020/002457 It is to provide a grinder wheel fixing device that can be separated and collected by disassembling when disposing of the wheel fixing nut to be detachable.
  • the present invention is constructed as follows in order to achieve the above purpose: That is, it is installed to rotate by the drive of a motor, and a bearing support protruding in a ring shape is formed on the outer periphery, and a male screw is attached to the outer end.
  • a motor shaft formed, a bearing in which an inner ring and an outer ring rotate respectively by being seated on the bearing support, a grinder wheel formed to cut or grind a work piece, and a boss installation hole penetrating through the center, and an outer surface of the grinder wheel
  • the outer body in close contact, the inner surface in close contact with the inner surface of the grinder wheel, and a female screw protruding inward from the center of the outer body but helically fastened with the male screw portion are formed therein,
  • the feature is that it is composed of a wheel fixing nut equipped with a boss that is seated on the upper surface of the bearing.
  • a grinder wheel fixing device characterized in that the outer body and the inner body are integrally formed with the boss in a state interposed between the grinder wheel.
  • the boss mounting hole is formed in a square shape having a corner
  • Grinder wheel fixing device characterized in that the outer shape of the boss passing through the boss installation hole is formed in a square shape corresponding to the boss installation hole so that the wheel fixing nut and the grinder wheel rotate without slip phenomenon.
  • a piece fixing hole is formed so that a penetrating elastic fixing piece is inserted, and the piece fixing hole comprises a locking jaw formed so that a protruding jaw protruding from the elastic fixing piece is caught.
  • It is formed to be detachable, and a plurality of elastic fixing pieces protruding to have their own elastic force at a position away from the boss formed on the outer body, and a position where the elastic fixing piece passes through the elastic fixing piece with a protruding jaw formed at the outer end and the boss installation hole of the grinder wheel.
  • Figure 1 shows a grinder wheel bearing and a wheel fixing nut according to the present invention.
  • Figure 2 is an exploded perspective view of Figure 1
  • Figure 3 is a cross-sectional view showing a state in which only the outer ring constituting this bearing is seated when the boss according to the present invention is
  • Figure 4 shows a state in which the boss installation hole is formed in a square shape according to the present invention
  • Figure 5 is by using a wheel fixing nut configured as a detachable according to the present invention
  • Figure 6 is a cross-sectional view showing the state in which Figure 5 is fixed
  • Figure 7 is a cross-sectional view showing a state in which the protruding jaw is caught and disassembled in Figure 6
  • Figure 8 is an exploded perspective view showing the protruding insertion portion according to the present invention
  • Fig. 9 is a cross-sectional view showing the state in which Fig. 8 is fixed
  • FIG. An exploded perspective view showing a state in which an elastic part is formed in the protruding insert according to the present invention
  • Figure 11 is a plan view showing a state in which the elastic part according to the present invention absorbs the impact by the friction resistance generated by the rotation of the grinder wheel
  • FIG. 12 is an exploded perspective view showing a state in which heat dissipation holes are formed in each of the inner and outer bodies according to the present invention
  • Fig. 13 is a cross-sectional view showing a state in which the heat of the workpiece processing friction is radiated to the outside while Fig. 12 is fixed
  • the present invention is largely attached to the motor shaft (100) and the motor shaft (100).
  • It is composed of a bearing 200 to be inserted and installed, a grinder wheel 300 for processing the workpiece, and a wheel fixing nut 400 for fixing the grinder wheel 300 to the motor shaft 100.
  • a bearing support part (0) protruding in a ring shape is formed at the inner and outer periphery near the motor and the outer periphery of the motor that generates rotational force, and a male screw having a constant pitch and height in the inner direction from the outer periphery of the outer end. (120) is formed, it is configured to be fastened and fixed by a well fixing nut 400, which will be described later.
  • the bearing 200 is a bearing support part 110 that is protruding from the outer periphery of the motor shaft 100, and a ball or roller is interposed between the inner ring and the outer ring, so that the inner and outer rings are Each of these is configured to rotate freely.
  • the grinder wheel 300 is used to cut the appropriate length of the workpiece according to the type and shape of the surface particles, or to polish the uneven surface for smooth processing, and a boss 430 to be described later is installed through the center.
  • Boss installation holes 310 are formed.
  • It consists of an outer body 410 in contact with the outer side of the grinder wheel 300 and an inner body 420 in contact with the inner side of the grinder wheel 300.
  • the outer body 410 is formed to protrude downward from the outer body 410, that is, in the inner direction in which the bearing 200 is installed, and the inner hollow inboss 430 is formed, and the inside of the hollow in the boss 430 is the motor
  • a female screw 431 is formed so as to be fastened with the male screw 120 formed on the shaft 100.
  • outer body 410 and the inner body 420 are spaced apart by the thickness of the grinder wheel 300, and a part of the boss 430 disposed at the spaced portion is in the grinder wheel 300 It is fixed through the formed boss installation hole (ruler 0).
  • the rotation direction in which the wheel fixing nut 400 is tightened and the rotation direction of the motor shaft 100 are made the same, and the spirally coupled wheel fixing nut 400 rotates reversely by the transmitted rotational power and is arbitrarily disassembled. It is configured not to be.
  • the inner ring constituting the bearing 200 is the motor shaft 100 It rotates or stops equally according to the rotation of the motor shaft 100, and the outer ring does not rotate at the same time without contact with the motor shaft (100).
  • the lower surface of the boss 430 is configured to have a width that only contacts the upper surface of the outer ring, and if the boss 430 is rotated reversely for disassembly, the motor shaft 100 The outer ring rotates separately while the inner ring is stopped, and as a result, the wheel fixing nut 400 is released from the motor shaft 100 and has an effect of dismantling. 2020/175850 1»(:1 ⁇ 1 ⁇ 2020/002457 will.
  • the grinder wheel 300 and the wheel fixing nut 400 can be integrally formed.
  • the boss installation hole 310 of the grinder wheel 300 is formed as a square 311 having a corner, as shown in the attached drawing 4, and thus, the boss 320 formed of the injected resin solution ) Is formed in a corresponding square, so that the corners are in contact with each other, so that the rotational power is transmitted without any slip phenomenon when the motor shaft 100 rotates.
  • the wheel fixing nut 400 may be configured to be detachable so that the grinder wheel 300 is disassembled.
  • Each of the inner body 420 is dividedly formed, and a boss 430 with a female screw 431 formed therein is formed at the center of the outer body 410 in the inward direction,
  • a plurality of elastic fixing pieces 411 having their own elastic force on the heating event away from the boss 430 are formed, and a protruding jaw 412 is formed at the outer end of the elastic fixing piece 411.
  • Boss installation hole 310 is formed, and corresponding to the elastic fixing piece 411
  • An installation hole 320 is formed at the location of the grinder wheel 300 so that the elastic fixing piece 411 passes.
  • a boss receiving hole 421 is formed in the inner body 420 so that the boss 430 passing through the boss installation hole 310 is accommodated therein, and penetrated through the installation hole 320
  • a piece fixing hole 422 is formed so that the elastic fixing piece 411 is inserted and fixed, and a locking jaw 423 is formed at an inner end of the piece fixing hole 422 so that a protruding jaw 412 is caught.
  • the protruding jaw 412 After passing through the installation hole 320 formed in the grinder wheel 300, and subsequently inserted into the piece fixing hole 422 formed in the inner body, the protruding jaw 412 is fixed to the locking jaw 423 to fix the wheel fixing nut
  • the 400 and the grinder wheel 300 can be integrated, and when the grinder wheel 300 that has reached the end of its service life is discarded, it can be easily disassembled by pushing or pressing the protruding jaw 412 with a tool to separate it from the locking jaw 423 Has an effect,
  • the elastic fixing piece 411 is subject to the limitation that its thickness must be formed relatively thin in order to have its own elastic force.
  • the thickness is added to the single fixing hole 422 2020/175850 1» (:1 ⁇ 1 ⁇ 2020/002457
  • the protruding height and width of the protruding insertion part 424 are the above installation holes ( It is configured to match the thickness and width of 320 so that the protruding insertion portion 424 inserted into the installation hole 320 is not exposed to the outside.
  • the protrusion insertion part 424 constructed in this way has a thickness that is not damaged by load.
  • the surface of the protrusion insertion portion 424 and the mounting hole 320 in contact with the inserted state may be damaged due to high-speed rotation and frictional resistance of the motor shaft 100. That is, the grinder wheel 300 When this clockwise rotation is performed, frictional resistance is generated in the opposite direction, so that the one surface where the protrusion insertion portion 424 and the installation hole 320 abut, particularly, the edge portion, may be damaged by a load.
  • an elastic portion 425 formed to have its own elastic force may be further configured on one surface of the protrusion insertion portion 424 to rotate.
  • the elastic part 425 has its own elastic force by forming an inner hollow and relatively thinner, and the elastic part 425 is in contact with the inner side of the installation hole 320. .
  • the elastic part 425 configured in this way absorbs the impact by being closed by the elastic force, and together with the protruding insertion part 424
  • Each of the weakest corners in the installation hole 320 is not in contact with each other, so it has an effect that can eliminate the concern of damage. 1] Further, as shown in the attached drawings 12 and 13, the outer body 410 and
  • a plurality of heat dissipation holes 440 are formed.
  • the grinder wheel 300 is thermally deformed due to frictional heat, and by forming a heat dissipation hole 430 in each of the outer body 410 and the inner body 420, the heat dissipation hole 430 generated by friction is formed. Through this, it is possible to prevent heat deformation in advance by quickly dissipating it to the outside.
  • the heat dissipation hole 440 may be formed in a number of circular shapes at regular intervals in the radiating image, or may be formed by forming a long hole having a curved shape.
  • the heat dissipation hole 440 formed of the curved long hole is preferable for rapid heat dissipation because when the wheel fixing nut 400 rotates, it can obtain a fan effect that sends wind from the inside to the outside like a fan of an electric fan.
  • the present invention constructed as described above consists of a grinder wheel (300) integrally or detachably with a wheel fixing nut (400), which is the most convenient way of fixing the motor shaft (100), which is fixed in a spiral, but with a durable bearing.
  • Wheel fixing nut (400) by (200) 2020/175850 1»(:1 ⁇ 1 ⁇ 2020/002457
  • the boss (430) and the female screw (431) constituting are prevented from being damaged. It rotates without obstacles or interference and has an action effect that allows rapid disassembly, and is also removable.
  • the wheel fixing nut 400 is capable of providing a useful grinder wheel fixing device that can separately collect recycled products and industrial waste when the grinder wheel 300 is disposed of at the end of its service life.
  • This invention relates to a grinder wheel fixing device.
  • the motor, bearing support, motor shaft, bearing, and grinder wheel with holes for mounting bosses, outer and inner surfaces that are in close contact with the outer surface of the grinder wheel, and boss installation It is a new technical means that is combined with a wheel fixing nut equipped with a boss that is seated on the upper surface of the bearing at the bottom through the hole.
  • These grinder wheel mounting and replacement means have been upgraded to go beyond the conventional grinder wheel fixing and releasing technology, and also It is an invention that is industrially usable because there are not only enough commercial and business licenses available in the market applied to the industry, but also practically and clearly to be implemented.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

본 발명은 그라인더 휠 고정장치에 관한 것으로서 그라인더휠을 나선체결방식으로 신속하게 고정시키되 공작물 작업에도 나사선이 파손되지 않아 해체가 용이하게 하고 또한, 구성품을 최소한으로 줄여 신속하면서도 간편하게 고정 및 해체시키며, 나아가 그라인더휠과 그 휠을 고정하는 휠고정너트가 착탈가능하게 구성되어 폐기시 분해시켜 분리수거가 가능한 그라인더 휠 고정장치을 제공하도록, 모터의 구동으로 회전되도록 설치되고, 외주연에 링형상으로 돌출된 베어링받침부가 형성되며, 외측단부에 수나사가 형성된 모터축과, 상기 베어링받침부에 내측면이 안착되어 내륜과 외륜이 각각 회전하는 베어링와, 공작물을 절단 또는 연마하도록 형성되고, 중앙에 관통되는 보스설치구멍이 형성된 그라인더휠와, 상기 그리인더휠 외면과 밀착되는 외부체와, 그라인더휠 내면과 밀착되는 내면체와, 상기 외부체 중앙에서 내측방향으로 돌출되되 내부에 상기 수나사부와 나선 체결되는 암나사가 형성되어, 상기 보스설치구멍을 관통한 하면이 상기 베어링 상면에 안착되는 보스로 구비된 휠고정너트로 구성된 그라인더 휠 고정장치를 제공하는 것이다.

Description

2020/175850 1»（：1^1{2020/002457 명세서
발명의명칭:그라인더휠고정장치 기술분야
[1] 본발명은그라인더훨고정장치에관한것으로서 ,더욱상세하게는모터의 동력으로회전하는모터축과훨고정너트를나선으로체결하여그라인더훨을 신속하고간편하게고정및해체되도록하고,더불어상기훨고정너트를 그라인더훨에착탈가능하게설치하여교체및분리수거가용이하도록하는 그라인더훨고정장치에관한것이다.
배경기술
[2] 일반적으로공작물을설계에맞춰절단하거나표면을연마또는연삭하여
불순물제거및광택을얻도록그라인더훨을사용하고있다.
[3] 상기그라인더훨은작업자가손으로휴대할수있도록소형모터로제작된 핸드그라인더에설치하여사용되거나또는작업현장에배치되는비교적출력이 높은대형모터에설치되어길고,두꺼운공작물을가공하는데사용되고있다.
[4] 이러한그라인더훨은특허등록제제 10-136640호와같이,모터의구동으로
회전하는모터축에적어도 2개로이루어진너트가상,하면에각각접촉된 상태로모터축과나선으로체결되도록구성된다.
[5] 그러나그라인더훨이회전하면상,하면에각각고정되는너트도조여지는
방향으로힘이가해지기때문에그라인더훨과함께모터축의내측방향으로 점차이동하게되어결과적으로상면에배치된너트의나사선이뭉개지는 파손으로해체가불가능한문제점이있었다.
[6] 또한,종래너트고정방식은작업자가그라인더훨을고정하기위해서별도로 너트를설치해야하기때문에고정에따른공정이늘어나는문제점이 있었다.
[7] 이러한문제점을해결하기위해서선행기술로특허공개
제 10-2018-0137700호（그라인더훨고정모듈및그라인더훨고정방법）가 개시되었으며,그구성을살펴보면,중앙에축방향을따라연장되는제 1관통홀, 상기제 1관통홀의측면에서상기중앙을향해돌출되며제 1반경방향의 반대방향을따라연장되는제 1돌출부,상기제 1관통홀의상기측면에서상기 중앙을향해돌출되며상기제 1반경방향과교차되는제 2반경방향의
반대방향을따라연장되는제 2돌출부,상기제 1관통홀의상기측면에서상기 중앙을향해돌출되며상기제 1및제 2반경방향들과각각교차하는제 3 반경방향의반대방향을따라연장되는제 3돌출부를포함하고,원판형상을 갖는그라인더훨와,그라인더본체로부터돌출되어상기축방향을따라 연장되며상기그라인더본체에서발생되는회전동력을상기그라인더훨에 전달하기위한고정볼트와,상기고정볼트가관통하는제 2관통홀및상기제 2 관통홀에인접하여구비되는안착홈을포함하고,상기그라인더훨을지지하는 2020/175850 1»（：1^1{2020/002457 제 1커플링부재와,상기제 1커플링부재와상기그라인더본체사이에 배치되어상기제 1커플링부재에탄성력을전달하고,내부에상기고정볼트를 수용하는탄성부재및상기제 1관통홀및제 2관통홀을관통하여상기 고정볼트와나사결합하기위한너트몸체,상기너트몸체로부터상기제 1 반경방향으로연장되는제 1날개,상기너트몸체로부터상기제 2반경방향으로 연장되는제 2날개,상기너트몸체로부터상기제 3반경방향으로연장되는제 3 날개 ,상기축방향의반대방향을따라연장되며상기제 1날개에구비되는제 1 날개홈,상기축방향의상기반대방향을따라연장되며상기제 2날개에 구비되는제 2날개홈,및상기축방향의상기반대방향을따라연장되며상기 제 3날개에구비되는제 3날개홈을포함하는제 2커플링부재를포함한다.
[8] 즉,선행기술그라인더훨중앙에제 1내지제 3돌출부를갖는고정부재가 설치된상태에서,고정볼트에탄성부재를장착하고,그전방에제 1
커플링부재를설치한후,그라인더훨의고정부재형상과대응형상으로 이루어진제 2커플링부재를고정부재에끼워돌리면고정부재의각각돌출부가 제 2커플링부재의홈부분에걸려고정되며,이때그라인더훨과제 1 커플링부재가탄성부재를압축한상태로밀착고정되도록구성되는것이다.
[9] 그러나,상기그라인더훨에구비된고정부재는제 2커플링부재와원활하게 회전고정되기위해서는유격이필연적으로발생하게된다.이러한유격은 공작물가공시그라인더훨이흔들리게되어정확한절단이불가능한문제점이 있고,절단된표면도불규칙하게울퉁불퉁하여제차연마작업을수행하는 문제점이 있다.
[1이 더불어,후방에설치되어탄성밀착력을제공하는탄성부재가마찰저항으로 신축되면서유격의흔들림을잡아주지못하게되어유격에따른문제점을 해소하지못했다.
[11] 특히,상기그라인더훨을고정하기위해구비된제 1,2커플링부재및
고정부재는종래너트가파손되어해체불가능한문제점을해결하였지만, 고정을위한공정수가늘어나고,구성품의증가로인한생산비용이증가되는 문제점이 있었던것이다.
[12] 나아가,상기그라인더훨과고정부재는일체로형성됨으로써,수명이다한 그라인더훨폐기시분해되지않아산업폐기물처리에따른분리가불가능한 문제점이 있었다.
발명의상세한설명
기술적과제
[13] 본발명은상기와같은문제점을해결하기위해서안출된것으로서 ,
그라인더훨을나선체결방식으로신속하게고정시키되공작물작업에도 나사선이파손되지않아해체가용이하게하고또한,구성품을최소한으로줄여 신속하면서도간편하게고정및해체시키며,나아가그라인더훨과그훨을 2020/175850 1»（：1^1{2020/002457 고정하는훨고정너트가착탈가능하게구성되어폐기시분해시켜분리수거가 가능한그라인더훨고정장치을제공하는것이다.
과제해결수단
[14] 본발명은상기와같은목적을달성하기 위하여다음과같이구성된다.즉, 모터의구동으로회전되도록설치되고,외주연에 링형상으로돌출된 베어링받침부가형성되며 ,외측단부에수나사가형성된모터축와,상기 베어링받침부에 내측면이 안착되어 내륜과외륜이 각각회전하는베어링와, 공작물을절단또는연마하도록형성되고,중앙에 관통되는보스설치구멍이 형성된그라인더훨와,상기그리인더훨외면과밀착되는외부체와,그라인더훨 내면과밀착되는내면체와,상기 외부체중앙에서 내측방향으로돌출되되 내부에상기수나사부와나선체결되는암나사가형성되어,상기
보스설치구멍을관통한하면이상기 베어링상면에 안착되는보스로구비된 훨고정너트로구성된것을특징으로한다.
[15] 또한,상기외부체와내부체는그리인더훨을사이에 개재된상태에서보스와 함께 일체로형성된것을특징으로하는그라인더 훨고정장치.
[16] 또한,상기보스설치구멍을모서리를갖는각형으로형성하고,상기
보스설치구멍를관통하는보스의 외형상을보스설치구멍과대응하는각형으로 형성시켜 훨고정너트와그라인더훨이슬립현상없이회전되도록한것을 특징으로하는그라인더 훨고정장치.
[17] 또는,상기훨고정너트를구성하는외부체와내부체를각각분할하여
탈착가능하게 형성되되 ,상기외부체에 형성된보스를벗어난내측면위치에 복수가자체탄성력을갖도록돌출되고,외단부에돌출턱이 형성된
탄성고정편과그라인더훨의보스설치구멍에서 벗어나탄성고정편이 관통하는 위치에 형성되는설치구멍과상기내부체에는상기보스설치구멍을관통한 보스가통과되는보스수용구멍이 형성되고,상기설치구멍을관통한 탄성고정편이삽입되도록형성되는편고정홀이 형성되며,상기 편고정홀에는 탄성고정편에서돌출형성된돌출턱이 걸려지도록형성된걸림턱으로구성된 것을특징으로한다.
[18] 또는,상기훨고정너트를구성하는외부체와내부체를각각분할하여
탈착가능하게 형성되되 ,상기외부체에 형성된보스를벗어난위치에복수가 자체탄성력을갖도록돌출되고,외단부에돌출턱이 형성된탄성고정편과 그라인더훨의보스설치구멍에서벗어나탄성고정편이관통하는위치에 형성되는설치구멍과상기 내부체에는상기보스설치구멍을관통한보스가 통과되는보스수용구멍이 형성되고,상기 탄성고정편과대응하는위치에서 상기 설치구멍에서벗어나지 않게삽입되도록돌출되고,내부에설치구멍을 관통한탄성고정편이삽입되도록형성되는편고정홀이 형성되며,상기 편고정홀에는탄성고정편에서돌출형성된돌출턱이걸려지도록걸림턱이 2020/175850 1»（：1^1{2020/002457 형성된돌출삽입부로구성된것을특징으로한다.
[19] 더불어,상기돌출삽입부에서그라인더훨이회전하는방향에 대응하는
일면에는자체탄성력을갖도록내부가중공으로형성된상태로설치구멍의 내측일면과접촉되는탄성부가구성된것을특징으로한다.
[2이 한편,상기외부체와내부체에는공작물작업시그라인더훨에서 발생하는
마찰열을외부로신속하게방열되도록다수가관통형성된방열구멍이 형성된 것을특징으로하는것이다.
발명의효과
[21] 이상과같이본발명에 따르면,훨고정너트에 형성된암나사와모터축에
형성된수나사를나선으로체결시킴으로써,신속하고간편하게고정 및해체할 수있는효과가있다.즉,그라인더훨을모터축이 회전하는방향으로
고정시키고,역방향으로회전시나선을따라해체될수있는효과가있다.
[22] 또한,훨고정너트를구성하는보스의하면과베어링의상면이 접촉시킴으로써 , 공작물을가공하는그라인더훨이 회전하면서나선으로따라모터축으로 이동하려할때,그하면이 베어링에걸려 전진운동하지못하게제어됨으로써, 종래너트방식의문제점인나선의파손을방지하여해체를위한훨고정너트의 역방향회전이 가능한효과가있다.
[23] 더불어 ,상기 베어링은베어링받침부에 안착되어 내륜과외륜이자유롭게
회전됨으로써 ,훨고정너트가해체를위해 역방향으로회전시킬때,아무런 장애나간섭없이원활하게회전시킬수있어신속한해체가가능한효과가있다.
[24] 한편,상기외부체와내부체를그라인더훨과일체로형성시킴으로써 견고한 고정력을발휘할수있고,나아가그라인더훨의보스설치구멍과보스의 외주연을각형으로형성시켜 절삭또는연마작업시슬립현상을방지하여절삭 또는연마력의 저하됨을방지하는효과가있다.
[25] 또한,상기외부체와내부체를탈착가능하게구성시킴으로써,수명을다한
그라인더훨을산업폐기물과재활용품으로구분하여분리시켜 폐기할수있는 효과가있다.
[26] 또한,상기설치구멍에돌출삽입부가삽입된상태에서작업시마찰저항으로 설치구멍에서 취약한모서리부분이 쉽게파손되는데 이러한문제를상기 돌출삽입부의 일단에자체탄성력을갖는탄성부를형성함으로써,마찰저항을 탄성부가흡수하여설치구멍의 취약한모서리부분을보호할수있는효과가 있다.
[27] 그리고,상기외부체와내부체에방열구멍을형성함으로써,작업시그라인더훨 중훨고정너트가감싸는부분의 열을외부로신속하게방열시켜그라인더훨이 열변형에 의한파손됨을미연에방지하는효과가있는것이다.
도면의간단한설명
[28] 도 1은본발명에 따른그라인더훨이 베어링 및훨고정너트를이용하여 2020/175850 1»（：1^1{2020/002457 모터축에고정된상태를나타낸단면도
[29] 도 2는도 1을분해한사시도
[3이 도 3은본발명에 따른보스하면이 베어링을구성하는외륜에만안착된상태를 나타낸단면도
[31] 도 4는본발명에 따른보스설치구멍이 각형으로형성된상태를나타낸
분해사시도]
[32] 도 5는본발명에 따른착탈식으로구성된훨고정너트를이용하여
그라인더훨을고정하는상태를나타낸분해사시도
[33] 도 6은도 5를고정한상태를나타낸단면도
[34] 도 7은도 6에서돌출턱이걸림턱에 걸린상태와해체된상태를나타낸단면도
[35] 도 8은본발명에 따른돌출삽입부를나타낸분해사시도
[36] 도 9는도 8을고정한상태를나타낸단면도
[37] 도 은본발명에 따른돌출삽입부에 탄성부가형성된상태를나타낸분해 사시도
[38] 도 11은본발명에 따른탄성부가그라인더훨의회전으로발생된마찰저항에 의해충격을흡수하는상태를나타낸평면도
[39] 도 12는본발명에 따른내，외부체에각각방열구멍이 형성된상태를나타낸 분해사시도
[4이 도 13은도 12를고정한상태에서 공작물가공시마찰열이외부로방열되는 상태를나타낸단면도
발명의실시를위한최선의형태
[41] 이하에서는첨부된도면을참조하여본발명의 바람직한실시 예를상세히 설명하기로한다.
[42] 본발명은첨부된도면도 1와같이크게,모터축 (100)과,모터축 (100)에
삽입설치되는베어링 (200)과,공작물을가공하는그라인더훨 (300)과상기 그라인더훨 (300)을모터축 (100)에고정하는훨고정너트 (400)로구성된다.
[43] 상기모터축 (100)은첨부된도면도 1및도 2와같이,전원의공급으로
회전력을발생시키는모터에 설치되어회전하는것으로서,모터와근거리인 내측외주연에는링형상으로돌출형성된베어링받침부 ( 0)가형성되고,외측단 외주연에서 내측방향으로일정한피치와높이를갖는수나사 (120)가형성되어 , 후술할훨고정너트 (400)가체결고정되도록구성된다.
[44] 상기 베어링 (200)은모터축 (100)외주연에돌출형성된베어링받침부 (110)°11 안착되는것으로서,내륜과외륜사이에볼또는롤러가개재되어 회전방향에 상관없이 내륜과외륜이 각각자유롭게회전되도록구성된다.
[45] 이렇게구성되는상기내륜으로모터축 (100)이삽입설치되고,외륜의상면에는 후술할보스 (430)의하면이 안착되어 강도가높은베어링 (200)은나선을따라 전진하려하는보스 (430)를저지하여나선이 파손을방지하고,그러함에 따라 2020/175850 1»（：1^1{2020/002457 역회전으로해체할때장애로인한간섭없이회전시키는작용효과를갖는다.
[46] 상기그라인더훨 (300)은표면입자의종류및형상에 따라공작물을적합한 길이를절단하거나또는고르지 않은표면을연마하여 매끄럽게가공하는데 사용하는것으로서,중앙에는후술할보스 (430)가관통설치되도록
보스설치구멍 (310)이 형성된다.
[47]
[48] *상기훨고정너트 (400)는모터축 (100)과나선체결로그라인더훨 (300)을
신속하고간편하게고정 및해체하도록구성되는것으로서,상기
그라인더훨 (300)의외측면과접촉되는외부체 (410)와상기그라인더훨 (300)의 내측면과접촉되는내부체 (420)로구성된다.
[49] 또한,상기외부체 (410)에서하방향즉,베어링 (200)이설치된내측방향으로 돌출형성되고내부가중공인보스 (430)가구성되고,상기보스 (430)의중공인 내부에는상기모터축 (100)에 형성된수나사 (120)와체결되도록암나사 (431)가 형성된다.
[5이 또한,상기외부체 (410)와내부체 (420)사이는그라인더훨 (300)의두께만큼 이격되고,그이격된부분에 배치되는보스 (430)의 일부분은그라인더훨 (300)에 형성된보스설치구멍 (자 0)을관통하여고정된다.
[51] 이렇게구성된상기훨고정너트 (400)에 형성된암나사 (431)를모터축 (100)에 형성된수나사 (120)와체결시키면하강한보스 (430)의하면이 베어링 (200)의 상면에 안착됨과동시에그라인더훨 (300)이모터축 (100)에고정된다.
[52] 또한,상기 훨고정너트 (400)가조여지는회전방향과모터축 (100)의 회전방향은 동일하게 이루어져나선결합된훨고정너트 (400)가전달된회전력에 의해 역회전하여 임의로해체되지 않도록구성된다.
[53] 따라서 ,상기모터축 (100)이회전하면훨고정너트 (400)도조여지는정방향으로 회전하게되어 베어링 (200)이 배치된내측방향으로이동력이가해지지만강도가 높은상기 베어링 (200)의상면에보스 (430)하면이 접촉되어 있음으로써,더이상 전진하지못하게되고,이렇게 전진을구속하면보스 (430)내부에 형성된 암나사 (431)가파손됨을방지하게되어 해체를위해그라인더훨 (300)을 역방향으로회전시키면내륜과외륜이자유롭게각각회전하여모터축 (100)의 나선을따라상방향으로간섭없이 이동할수있는것이다.
[54] 여기서 ,상기보스 (430)의하면전체가베어링 (200)상부에 안착되면해체를 위해 역회전하는데간섭입 발생할수있다.즉,상기 베어링 (200)을구성하는 내륜은모터축 (100)의 회전에따라동일하게회전또는정지되고,상기 외륜은 모터축 (100)과비접촉으로동시에회전되지 않는다.
[55] 따라서,첨부된도면도 3과같이,상기보스 (430)의하면은외륜의상면에만 접촉되는폭으로형성되도록구성시켜 ,해체를위해상기보스 (430)를 역회전시키면모터축 (100)과내륜이정지한상태에서외륜이 별도로역회전되어 결과적으로훨고정너트 (400)가모터축 (100)에서풀려 해체되는작용효과를갖는 2020/175850 1»（：1^1{2020/002457 것이다.
[56] 나아가,상기훨고정너트 (400)를구성하는외부체 (410)와내부체 (420)는
그라인더훨 (300)을금형에올려놓고수지용액을주입하여그라인더훨 (300)과 훨고정너트 (400)를일체로형성시킬수있다.
[57] 또한,상기그라인더훨 (300)의보스설치구멍 (310)은첨부된도면도 4와같이, 모서리를갖는각형 (311)으로형성하고,따라서 ,주입된수지용액으로형성되는 보스 (320)도대응하는각형으로형성되어그모서리부분이서로맞닿아 모터축 (100)회전시슬립현상없이회전력이그대로전달되도록구성될수있다.
[58] 한편,상기훨고정너트 (400)는그라인더훨 (300)이분해되도록착탈가능하게 구성될수있다.
[59] 이를위해서,첨부된도면도 5및도 7과같이,상기외부체 (410)와
내부체 (420)를각각분할형성하고,상기 외부체 (410)의중앙에는내측방향으로 돌출되어 내부에 암나사 (431)가형성된보스 (430)가형성되고,상기
보스 (430)에서벗어난방사상에자체탄성력을갖춘탄성고정편 (411)이복수로 형성되며,상기 탄성고정편 (411)의 외단부에는돌출턱 (412)이 형성된다.
[6이 또한,상기그라인더훨 (300)의중앙에는보스 (430)가관통하는
보스설치구멍 (310)이 형성되고,상기 탄성고정편 (411)과대응하는
그라인더훨 (300)위치에는탄성고정편 (411)이관통되도록설치구멍 (320)이 형성된다.
[61] 또한,상기내부체 (420)에는상기보스설치구멍 (310)을관통한보스 (430)가 내부에수용되도록보스수용구멍 (421)이 형성되고,상기 설치구멍 (320)을 관통한탄성고정편 (411)이삽입고정되도록편고정홀 (422)이 형성되며,상기 편고정홀 (422)에내측단부에는돌출턱 (412)이걸려지도록걸림턱 (423)이 형성된다.
[62] 따라서,상기외부체 (신 0)에 형성된탄성고정편 (411)과돌출턱 (412)은
그라인더훨 (300)에 형성된설치구멍 (320)을관통하고,연이어서 내부체에 형성된편고정홀 (422)로삽입된후,걸림턱 (423)에돌출턱 (412)이고정되어 훨고정너트 (400)와그라인더훨 (300)이 일체화될수있고,사용수명을다한 그라인더훨 (300)을폐기할경우에는도구로돌출턱 (412)을밀거나눌러 걸림턱 (423)에서 이탈시켜 간편하게분해할수있는작용효과를갖는다,
[63] 더불어상기와같이탄성고정편 (411)이설치구멍 (320)을관통하여
편고정홀 (422)에고정되면훨고정너트 (400)가회전하면탄성고정편 (411)이 그라인더훨 (300)을회전방향으로밀어내는작용효과로슬립현상없이회전력을 전달할수있는작용효과도갖는다.
[64] 또는,상기탄성고정편 (411)은자체탄성력을갖기위해서그두께가비교적 얇게 형성되어야하는제한이따르기 때문에공작물가공시고속으로
회전하면서마찰저항으로파손될수있다.
[65] 따라서,첨부된도면도 8및도 9와같이,상기 편고정홀 (422)에두께를부여한 2020/175850 1»（：1^1{2020/002457 상태로외측방향으로돌출형성되는돌출삽입부 (424)를형성하되 ,상기 돌출삽입부 (424)의돌출된높이와폭은상기설치구멍 (320)의두께와폭과 일치하도록형성시켜상기설치구멍 (320)으로삽입된돌출삽입부 (424)가외부로 노출되지않도록구성된다.
[66] 이렇게구성된상기돌출삽입부 (424)는하중으로파손되지않는두께로
형성시켜설치구멍 (320)에바로삽입시킴으로써,상기탄성고정편 (411)과 설치구멍 (320)이비접촉되어파손됨을방지할수있는것이다.
[67] 나아가,상기돌출삽입부 (424)와설치구멍 (320)이삽입된상태에서맞닿은 일면이모터축 (100)의고속회전과마찰저항으로인하여파손될수있다.즉, 그라인더훨 (300)이시계방향으로회전하면마찰저항은반대방향으로발생하게 됨으로써,상기돌출삽입부 (424)와설치구멍 (320)이맞닿은일면특히, 모서리부분의취약하여하중에의한파손될수있다.
[68] 따라서,첨부된도면도 및도 11과같이,상기돌출삽입부 (424)의회전하는 일면에는자체탄성력을갖도록형성된탄성부 (425)가더구성될수있다.
[69] 상기탄성부 (425)는내부가중공으로형성되고,비교적두께를얇게형성시켜 자체탄성력을갖추는것으로서,상기탄성부 (425)는설치구멍 (320)의내측 일면과접촉된상태를이룬다.
이 이렇게구성된상기탄성부 (425)는마찰저항력이설치구멍 (320)에전달되어 후퇴하려할때 ,탄성부 (425)가탄성력으로오므려져충격을흡수하게되고, 더불어돌출삽입부 (424)와설치구멍 (320)에서가장취약한각각의모서리부분 상호접촉되지않아파손의우려도해소할수있는작용효과를갖는것이다. 1] 더나아가,첨부된도면도 12및도 13과같이,상기외부체 (410)와
내부체 (420)에는다수로형성되는방열구멍 (440)이형성된다.
2] 즉,공작물가공시외부체 (410)와내부체 (420)에가려진그라인더훨 (300) 중앙부분에발생한마찰열이내부에서가두어진상태를유지하면
그라인더훨 (300)이마찰열에의한열변형되는데이를해결하도록,상기 외부체 (410)와내부체 (420)에각각방열구멍 (430)을형성함으로써,마찰로 발생한마찰열이방열구멍 (430)을통해신속하게외부로방열시켜열변형을 미연에방지할수있는것이다.
3] 여기서,상기방열구멍 (440)은방사상에일정한간격을두고다수가원형으로 형성시킬수있고,또는곡선형상을갖는장공으로형성시켜이루어질수도 있다.
4] 상기곡선의장공으로형성된방열구멍 (440)은훨고정너트 (400)가회전하면 선풍기의팬과같이내부에서외부로바람을내보내는선풍효과를얻을수있어 신속한방열을위해서바람직하다.
5] 이상과같이구성된본발명은그라인더훨 (300)과일체또는착탈가능하게 훨고정너트 (400)로구성시킴으로써 ,모터축 (100)고정에서가장편리한방식인 나선으로고정하되，내구성을갖는베어링 (200)에의해훨고정너트 (400)를 2020/175850 1»（：1^1{2020/002457 구성하는보스 (430)와암나사 (431)의파손을방지하고,해체시자유롭게 회전하는베어링 (200)이역방향으로회전하는보스 (430)를장애나간섭없이 회전시켜신속한해체가가능한작용효과를갖고,또한착탈가능한
훨고정너트 (400)는사용수명을다한그라인더훨 (300)을폐기할때재활용품과 산업폐기물을각각분리수거할수있는유용한그라인더훨고정장치를제공할 수있는것이다.
6] 본발명은전술한실시 예에한정되지않고본발명의기술사상이허용하는 범위내에서다양하게변형하여실시할수가있다.
산업상이용가능성
7] 본발명은그라인더훨고정장치에관한것으로서그라인더훨을
나선체결방식으로신속및용이하게고정및해제시키는것을제공하기위해 모터,베어링받침부,모터축,베어링,보스설치구멍이형성된그라인더훨, 그리인더훨외면과밀착되는외부체및내면체,보스설치구멍을관통한하면에 베어링상면에안착되는보스로구비된훨고정너트로결합한새로운기술적 수단이다.이러한그라인더훨장착및교체수단을업그레이드하여종래의 그라인더훨고정및해제기술을뛰어넘고,또한일반그라이인더에적용되는 시장에시판및영업가능서이충분히있을뿐만아니라현실적으로명백하게 실시할수있는정도이므로산업상이용가능성이있는발명이다.

Claims

2020/175850 1»（：1/10公020/002457 청구범위
[청구항 1] 모터의구동으로회전되도록설치되고,외주연에링형상으로돌출된 베어링받침부 ( 0)가형성되며,외측단부에수나사 (120)가형성된 모터축 (100);
상기베어링받침부 ( 0)에내측면이안착되어내륜과외륜이각각 회전하는베어링 (200);
공작물을절단또는연마하도록형성되고,중앙에관통되는 보스설치구멍 (310)이형성된그라인더훨 (300);
상기그리인더훨 (300)외면과밀착되는외부체 (410)와,그라인더훨 (300) 내면과밀착되는내면체 (420)와,상기외부체 (410)중앙에서 내측방향으로돌출되되내부에상기수나사 (120)와나선체결되는 암나사 (431)가형성되어,상기보스설치구멍 (자 0)을관통한하면이상기 베어링 (200)상면에안착되는보스 (430)로구비된훨고정너트 (400);로 구성되어 ,
상기훨고정너트 (400)를그라인더훨 (300)회전방향으로돌리면 모터축 (100)에고정되고,역방향으로회전시키면그라인더훨 (300)과함께 모터축 (100)에서해체되도록한것을특징으로하는그라인더훨 고정장치.
[청구항 2] 제 1항에있어서,
상기외부체 (410)와내부체 (420)는그리인더훨 (300)을사이에개재된 상태에서보스 (430)와함께일체로형성된것을특징으로하는그라인더 훨고정장치.
[청구항 3] 제 1항에있어서,
상기보스설치구멍 (310)을모서리를갖는각형 (311)으로형성하고,상기 보스설치구멍 (310)를관통하는보스 (430)의외형상을
보스설치구멍 (자 0)과대응하는각형으로형성시켜훨고정너트 (400)와 그라인더훨 (300)이슬립현상없이회전되도록한것을특징으로하는 그라인더훨고정장치.
[청구항 4] 제 1항에있어서,
상기훨고정너트 (400)를구성하는외부체 (410)와내부체 (420)를각각 분할하여탈착가능하게형성되되,
상기외부체 (사 0)에형성된보스 (430)를벗어난내측면위치에복수가 자체탄성력을갖도록돌출되고,외단부에돌출턱 (412)이형성된 탄성고정편 (411)과,
그라인더훨 (300)의보스설치구멍 (310)에서벗어나탄성고정편 (411)이 관통하는위치에형성되는설치구멍 (320)과,
상기내부체 (420)에는보스설치구멍 (310)을관통한보스 (430)가통과되는 2020/175850 1»（：1^1{2020/002457 보스수용구멍 (421)이형성되고,상기설치구멍 (320)을관통한
탄성고정편 (411)이삽입되도록형성되는편고정홀 (422)이형성되며,상기 편고정홀 (422)에는탄성고정편 (411)에서돌출형성된돌출턱 (412)이 걸려지도록형성된걸림턱 (423)으로구성되어,
상기외부체 (410)와내부체 (420)가탄성고정편 (411)과편고정홀 (422)을 이용하여고정되거나탈거되는한편,상기탄성고정편 (411)이
설치구멍 (320)에수용되어훨고정너트 (400)와그라인더훨 (300)이 슬립현상없이회전되도록한것을특징으로하는그라인더훨고정장치.
[청구항 5] 제 1항에있어서,
상기훨고정너트 (400)를구성하는외부체 (410)와내부체 (420)를각각 분할하여탈착가능하게형성되되,
상기외부체 (사 0)에형성된보스 (430)를벗어난위치에복수가
자체탄성력을갖도록돌출되고,외단부에돌출턱 (412)이형성된 탄성고정편 (411)과,
그라인더훨 (300)의보스설치구멍 (310)에서벗어나탄성고정편 (411)이 관통하는위치에형성되는설치구멍 (320)과,
상기내부체 (420)에는상기보스설치구멍 (310)을관통한보스 (430)가 통과되는보스수용구멍 (421)이형성되고,상기탄성고정편 (411)과 대응하는위치에서상기설치구멍 (320)에서벗어나지않게삽입되도록 돌출되고,내부에설치구멍 (320)을관통한탄성고정편 (411)이삽입되도록 형성되는편고정홀 (422)이형성되며 ,상기편고정홀 (422)에는
탄성고정편 (411)에서돌출형성된돌출턱 (412)이걸려지도록 걸림턱 (423)이형성된돌출삽입부 (424)로구성되어 ,
상기외부체 (410)와내부체 (420)가탄성고정편 (411)과편고정홀 (422)을 이용하여고정되거나탈거되는한편,상기돌출삽입부 (424)가
설치구멍 (320)에수용되어훨고정너트 (400)와그라인더훨 (300)이 슬립현상없이회전되도록한것을특징으로하는그라인더훨고정장치.
[청구항 6] 제 5항에있어서,
상기돌출삽입부 (424)에서그라인더훨 (300)이회전하는방향에대응하는 일면에는자체탄성력을갖도록내부가중공으로형성된상태로 설치구멍 (320)의내측일면과접촉되는탄성부 (425)가구성되어, 상기그라인더훨 (300)이회전하면공작물과마찰저항으로후퇴하는 설치구멍 (320)의내측일면이탄성부 (425)를압박하면서충격을흡수시켜 설치구멍 (320)의모서리부분이마찰저항의충격으로파손됨을
방지하도록한것을특징으로하는그라인더훨고정장치.
[청구항 7] 제 1항에있어서,
상기외부체 (410)와내부체 (420)에는공작물작업시그라인더훨 (300)에서 발생하는마찰열을외부로신속하게방열되도록다수가관통형성된 2020/175850 1»（：1^1{2020/002457 방열구멍 (440)이 형성된것을특징으로하는그라인더 훨고정장치.
[청구항 8] 제 7항에 있어서,
상기 방열구멍 (440)은원형으로다수가형성되거나또는곡선의 장공으로형성되어선풍방식으로방열되도록한것을특징으로하는 그라인더 훨고정장치.
PCT/KR2020/002457 2019-02-27 2020-02-20 그라인더 휠 고정장치 Ceased WO2020175850A1 (ko)

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