WO2012108103A1 - Outil en forme de disque et outil électrique comportant un outil en forme de disque - Google Patents

Outil en forme de disque et outil électrique comportant un outil en forme de disque Download PDF

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Publication number
WO2012108103A1
WO2012108103A1 PCT/JP2011/079205 JP2011079205W WO2012108103A1 WO 2012108103 A1 WO2012108103 A1 WO 2012108103A1 JP 2011079205 W JP2011079205 W JP 2011079205W WO 2012108103 A1 WO2012108103 A1 WO 2012108103A1
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WO
WIPO (PCT)
Prior art keywords
shaped tool
disk
disc
tool
holes
Prior art date
Application number
PCT/JP2011/079205
Other languages
English (en)
Japanese (ja)
Inventor
高弘 川上
伸 杉浦
英治 武藤
賢一 田伏
Original Assignee
株式会社 マキタ
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 株式会社 マキタ filed Critical 株式会社 マキタ
Publication of WO2012108103A1 publication Critical patent/WO2012108103A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • 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
    • 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
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/16—Bushings; Mountings

Definitions

  • the present invention relates to a disk-shaped tool provided around a screw hole for screwing to a rotating shaft, and an electric tool including the disk-shaped tool.
  • Non-Patent Document 1 discloses a cup-type diamond wheel that is connected to an output shaft of a disk sander and is used for grinding a stone or the like.
  • the diamond wheel is attached to the flange by a lock nut that is screwed and fastened to the output shaft after inserting the insertion hole provided in the center of the diamond wheel. It is pressed against the member. Further, the periphery of the diamond wheel is covered with a dust collecting cover.
  • a disk-shaped tool used for grinding stone or the like there is also a diamond wheel having a hub shaft that has a two-sided width and is formed with a screw hole.
  • a part of the dust collecting cover can be attached and detached so that an opening can be formed in the dust collecting cover, and the spanner can be removed from the opening.
  • the output shaft can be screwed into the screw hole, or the screw hole and the output shaft can be unscrewed.
  • the present invention has been proposed in view of such a situation, and an object thereof is to provide a disk-shaped tool that is easily attached to and detached from a rotating shaft, and an electric tool including the disk-shaped tool.
  • the invention of claim 1 is a disk-shaped tool, Formed at the center of the disk-shaped tool, and a screw hole for screwing to the rotating shaft; A plurality of through holes formed at predetermined intervals in the circumferential direction on the circumference centered on the screw hole, The interval between at least a part of the through holes is an interval at which a pair of engaging portions provided in a tool for attaching / detaching to / from the rotating shaft can be engaged.
  • the invention of claim 2 is characterized in that, in claim 1, the through hole is also used as a dust collection hole for collecting dust generated during use.
  • a power tool according to an invention of claim 8 is a housing provided with a motor, A power tool including a rotating shaft protruding from the housing, The disk-shaped tool according to claim 1 is screwed onto the rotating shaft.
  • the engaging portion of the tool for attaching and detaching the disk-shaped tool with respect to the rotating shaft is provided in the through hole of the disk-shaped tool.
  • the disk-shaped tool can be easily attached to and detached from the rotating shaft simply by engaging with the screw and screwing or unscrewing the screw hole of the disk-shaped tool with respect to the rotating shaft.
  • the through hole can have both a function of engaging the engaging portion and a function of collecting dust. Therefore, it is not necessary to form the dust collection hole separately from the hole for engaging the engaging portion.
  • the diamond wheel 1 includes a main body 10, a hub shaft 20, a screw hole 30, a through hole 40, and a grinding protrusion 50.
  • the main body 10 is processed into a cup shape by processing a disk-shaped steel plate, and has a flat portion 11 and a bulging portion 12.
  • the bulging portion 12 has a trapezoidal cross section, and its center coincides with the center of the main body 10 and bulges from the upper surface side surface of the flat portion 11.
  • the hub shaft 20 protrudes upward from the top of the bulging portion 12.
  • the hub shaft 20 is formed with a two-sided width portion 21.
  • the screw hole 30 is formed through the center of the hub shaft 20.
  • a plurality of through holes 40 are provided on the inclined surface 13 of the bulging portion 12.
  • the plurality of through holes 40 are formed at a predetermined interval A in the circumferential direction on the circumference around the screw hole 30.
  • the predetermined interval A is set to the same interval.
  • the interval B between every other through hole 40, 40 is set to the same interval as the interval C (see FIG. 3) between the engagement protrusions 72, 72 of the lock nut wrench 70.
  • the plurality of grinding protrusions 50 are spaced apart from each through hole 40 on the outer peripheral side of the diamond wheel 1 by a predetermined interval in the circumferential direction around the screw hole 30 on the bottom surface of the flat portion 11. Is provided.
  • FIG. 3 shows a state in which the diamond wheel 1 is attached to the disc sander 60.
  • a motor (not shown) is accommodated in the motor housing 61 of the disk sander 60, and the rotating shaft of the motor projects from the motor housing 61 into the gear housing 62.
  • the gear housing 62 houses a speed reduction mechanism that meshes with the rotating shaft.
  • the spindle 63 is supported on the gear housing 62 so as to be orthogonal to the rotation shaft in a rotatable state, and the tip of the spindle 63 protrudes from the lower surface of the gear housing 62.
  • the rotation of the rotation shaft is transmitted to the spindle 63 via a speed reduction mechanism.
  • the gear housing 62 is an example of the housing of the present invention.
  • a male screw that is screwed into the screw hole 30 is formed on the outer peripheral surface of the tip of the spindle 63.
  • the lock nut wrench 70 having a bifurcated portion 71 on the front end side after the front end portion of the spindle 63 is screwed into the screw hole 30 of the hub shaft 20 in a state where the spindle 63 is stopped by a lock mechanism (not shown).
  • both engaging protrusions 72, 72 formed integrally with the bifurcated portion 71 are inserted into every other through hole 40, 40 to engage with each other.
  • the diamond wheel 1 moves in the axial direction of the spindle 63 while rotating and is fastened to the spindle 63.
  • the diamond wheel 1 can be removed from the spindle 63 by applying a rotational force to the lock nut wrench 70 in a direction in which the screw hole 30 and the spindle 63 are unscrewed.
  • the spindle 63 is an example of the rotating shaft of the present invention
  • the diamond wheel 1 is an example of the disk-shaped tool of the present invention
  • the disk sander 60 is an example of the electric tool of the present invention.
  • the lock nut wrench 70 is an example of a tool for attaching and detaching operations of the present invention
  • the both engaging projections 72 and 72 are an example of a pair of engaging portions of the present invention.
  • a dust collecting cover 65 is fixed to the lower surface of the gear housing 62.
  • the dust collecting cover 65 has a bowl shape that has a larger diameter than the diamond wheel 1 and opens downward, and covers the periphery of the diamond wheel 1.
  • a dust collection cylinder 66 that communicates with the inside of the dust collection cover 65 is provided on the outer peripheral surface of the dust collection cover 65.
  • a dust collector can be connected to the dust collection cylinder 66 via a suction hose.
  • each through-hole 40 When grinding the surface to be processed by the disk sander 60, the operator holds the motor housing 61 and turns on the switch to drive the motor and operate the dust collector.
  • the surface to be processed is ground by moving the grinding protrusions 50 that rotate with the drive of the motor on the surface to be processed while contacting the surface to be processed. Dust generated during grinding of the surface to be processed passes through each through-hole 40 by a suction force directed to the dust collection cylinder 66 and is collected from the dust collection cylinder 66 to the dust collector via the suction hose. Accordingly, each through hole 40 also functions as a dust collection hole for collecting dust.
  • each through hole 40 can have both a function of engaging the engaging protrusion 72 and a function of collecting dust. Therefore, it is not necessary to form the dust collection hole separately from the hole for engaging the engagement protrusion 72.
  • the present invention is not limited to the embodiment described above, and can be implemented by appropriately changing a part of the configuration without departing from the spirit of the invention.
  • the through holes 40 and 40 are formed on the circumference around the screw hole 30 with a gap C in a specific portion in the circumferential direction, and the portions other than the specific portion are not constant.
  • An appropriate number of through holes 40 functioning as dust collecting holes may be formed at intervals.
  • a cup-shaped diamond wheel is shown as an example of a disk-shaped tool.
  • the disk-shaped tool may be a disk-shaped diamond hole.
  • the disk-shaped tool may be a cup-shaped diamond wheel that does not have a two-sided width portion or a hub shaft.
  • Diamond wheel 30 ... Screw hole, 40 ... Through hole (dust collecting hole), 60 ... Disc sander, 62 ... Gear housing, 63 ... Spindle, 70 ... Lock nut wrench, 72 ... Locking nut wrench engagement protrusions, A ... spacing between through holes, B ... spacing between every other through holes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Portable Power Tools In General (AREA)

Abstract

L'invention vise à proposer un outil en forme de disque, qui peut facilement être attaché à un arbre rotatif et en être détaché ; et un outil électrique équipé d'un outil en forme de disque. A cet effet, est proposé un outil en forme de disque qui comporte en son centre un trou fileté destiné à coopérer avec un arbre rotatif (63) par l'intermédiaire de filets de vis. Des trous débouchants (40) sont formés à intervalles prédéterminés dans la direction circonférentielle sur un cercle centré sur le trou fileté, et l'intervalle (C) entre au moins certains des trous débouchants est fixé à une valeur qui permet qu'une paire de sections de prise (72, 72), qui est formée sur un outil (70) servant à attacher l'outil en forme de disque à l'arbre rotatif et à l'en détacher, est mise en prise avec certains des trous débouchants. De plus, les trous débouchants (40) sont aussi aptes à servir de trous collecteurs de poussière pour collecter la poussière produite pendant l'utilisation.
PCT/JP2011/079205 2011-02-07 2011-12-16 Outil en forme de disque et outil électrique comportant un outil en forme de disque WO2012108103A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011024158A JP2012161883A (ja) 2011-02-07 2011-02-07 円盤状工具及び円盤状工具を備えた電動工具
JP2011-024158 2011-02-07

Publications (1)

Publication Number Publication Date
WO2012108103A1 true WO2012108103A1 (fr) 2012-08-16

Family

ID=46638332

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/079205 WO2012108103A1 (fr) 2011-02-07 2011-12-16 Outil en forme de disque et outil électrique comportant un outil en forme de disque

Country Status (2)

Country Link
JP (1) JP2012161883A (fr)
WO (1) WO2012108103A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107053024A (zh) * 2016-12-08 2017-08-18 常熟市隆通金属制品有限公司 一种便于固定使用的金刚砂砂轮片

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62127762U (fr) * 1986-02-05 1987-08-13
JPH0586463U (ja) * 1992-04-27 1993-11-22 株式会社安川電機 砥石自動交換装置
JPH07266223A (ja) * 1994-03-29 1995-10-17 Daichiku Okayama Kojo:Kk ディスクサンダーにおける切断用砥石取付構造
JP2009196016A (ja) * 2008-02-20 2009-09-03 Tenryu Saw Mfg Co Ltd 回転工具の取付け装置
JP2010058177A (ja) * 2008-09-01 2010-03-18 Tenryu Saw Mfg Co Ltd 円板状回転工具の取付け装置
JP2010173001A (ja) * 2009-01-29 2010-08-12 Sankyo Diamond Industrial Co Ltd 集じんカバー

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62127762U (fr) * 1986-02-05 1987-08-13
JPH0586463U (ja) * 1992-04-27 1993-11-22 株式会社安川電機 砥石自動交換装置
JPH07266223A (ja) * 1994-03-29 1995-10-17 Daichiku Okayama Kojo:Kk ディスクサンダーにおける切断用砥石取付構造
JP2009196016A (ja) * 2008-02-20 2009-09-03 Tenryu Saw Mfg Co Ltd 回転工具の取付け装置
JP2010058177A (ja) * 2008-09-01 2010-03-18 Tenryu Saw Mfg Co Ltd 円板状回転工具の取付け装置
JP2010173001A (ja) * 2009-01-29 2010-08-12 Sankyo Diamond Industrial Co Ltd 集じんカバー

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107053024A (zh) * 2016-12-08 2017-08-18 常熟市隆通金属制品有限公司 一种便于固定使用的金刚砂砂轮片

Also Published As

Publication number Publication date
JP2012161883A (ja) 2012-08-30

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