WO2020175850A1 - Dispositif de fixation de meule - Google Patents

Dispositif de fixation de meule 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
Authority
WO
WIPO (PCT)
Prior art keywords
grinder wheel
boss
wheel
hole
fixing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2020/002457
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English (en)
Korean (ko)
Inventor
안상훈
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2020175850A1 publication Critical patent/WO2020175850A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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.

Landscapes

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

Abstract

La présente invention concerne un dispositif de fixation de meule, l'objectif étant de fournir un dispositif de fixation de meule permettant de fixer rapidement une meule au moyen d'une fixation par filetage, et empêchant aux filets de se casser même pendant l'usinage d'une pièce de façon à faciliter le démontage, réduisant au minimum les composants de sorte que ceux-ci puisent être fixés et démontés rapidement et simplement, et permettant en outre à la meule et à un écrou de fixation de la meule d'être montés de manière amovible de façon à pouvoir être démontés et collectés séparément lors de la mise au rebut, le dispositif de fixation comprenant : un arbre moteur qui est mis en rotation par l'entraînement d'un moteur, comprend une partie de support de palier faisant saillie en forme d'anneau et formée sur sa périphérie extérieure et présente un filet extérieur formé sur sa partie d'extrémité extérieure ; un palier dont la surface intérieure est montée sur la partie de support de palier de telle sorte qu'une bague intérieure et une bague extérieure tournent respectivement ; la meule qui coupe ou meule une pièce et qui comporte un trou de montage pour bossage en son centre ; et l'écrou de fixation de meule comprenant un corps extérieur venant en contact étroit avec la surface extérieure de la meule, un corps intérieur venant en contact étroit avec la surface intérieure de la meule et un bossage qui fait saillie vers l'intérieur à partir du centre du corps extérieur et à l'intérieur duquel est formé un filet intérieur fixé par filetage à une partie à filet extérieur, de sorte que la surface inférieure de celui-ci ayant traversé le trou de montage pour bossage est montée sur la surface supérieure du palier.
PCT/KR2020/002457 2019-02-27 2020-02-20 Dispositif de fixation de meule Ceased WO2020175850A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2019-0023016 2019-02-27
KR1020190023016A KR102136486B1 (ko) 2019-02-27 2019-02-27 그라인더 휠 고정장치

Publications (1)

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WO2020175850A1 true WO2020175850A1 (fr) 2020-09-03

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WO (1) WO2020175850A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230012733A (ko) 2021-07-16 2023-01-26 (주)삼한기업 핸드 그라인더의 그라인더 날 고정장치
KR102441374B1 (ko) 2021-12-02 2022-09-07 (주)삼한기업 핸드 그라인더의 그라인더 날 고정장치
KR20230151369A (ko) 2022-04-25 2023-11-01 주식회사 이엠케이 에어 그라인더의 커플러 구조
KR102679349B1 (ko) * 2023-06-14 2024-06-27 주석영 호환성이 우수한 그라인더용 집진커버

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990010185A (ko) * 1997-07-15 1999-02-05 이상익 디스크 그라인더의 분진유입 방지장치
KR20080001200U (ko) * 2008-04-25 2008-05-20 서득수 그라인더용 회전연삭판
JP2013226650A (ja) * 2013-08-09 2013-11-07 Hitachi Koki Co Ltd 動力工具
KR101483963B1 (ko) * 2014-11-25 2015-01-20 김창성 핸드 그라인더의 연마디스크 탈,부착장치
KR101578730B1 (ko) * 2014-09-22 2015-12-21 계양전기 주식회사 그라인더 휠 잠금장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990010185A (ko) * 1997-07-15 1999-02-05 이상익 디스크 그라인더의 분진유입 방지장치
KR20080001200U (ko) * 2008-04-25 2008-05-20 서득수 그라인더용 회전연삭판
JP2013226650A (ja) * 2013-08-09 2013-11-07 Hitachi Koki Co Ltd 動力工具
KR101578730B1 (ko) * 2014-09-22 2015-12-21 계양전기 주식회사 그라인더 휠 잠금장치
KR101483963B1 (ko) * 2014-11-25 2015-01-20 김창성 핸드 그라인더의 연마디스크 탈,부착장치

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