Cup type grinding wheel

Inactive Publication Date: 2013-12-12
GOEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]Therefore, the present invention is conceived in view of the foregoing problems. It is an object of the present invention to prov

Problems solved by technology

However, a base plate to fix tips of the cup type grinding wheel in the patent documents 1 or 2 is heavy, because it is made of a metal such as aluminum or steel.
Therefore, there is a problem that a working load is great when a user operates a rotary tool equipped with the cup type grinding wheel attached thereto with one hand.
And, there is also a problem that power consumption in the rotary tool with the cup type grinding wheel is large, because the weight of the cup type grinding wheel is heavy.
Furthermore, as a metal base plate is poor in elasticity,

Method used

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  • Cup type grinding wheel
  • Cup type grinding wheel
  • Cup type grinding wheel

Examples

Experimental program
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Example

Example

[0087]The example of the grinding wheel according to the present invention will be explained in the following.

[0088]The grinding wheel as shown in FIGS. 1 and 2 is made by using the following members.

[0089](Plastic Base Plate)

[0090]A base plate made of a glass fiber-reinforced plastic (The brand name is TECAMID 66 GF 30) made by Ensinger Co., Ltd. whose outer diameter D1 is 123 mm, thickness is 3.5 mm, inner diameter D2 of the recessed portion 3 is 60 mm, height H of the recessed portion 3 is 13 mm, and the slant angle θ of the recessed portion 3 is 73 degrees is used.

[0091](Metal Annular Plate)

[0092]A metal annular plate made of SK5 (carbon tool steel) whose width is 30.5 mm and thickness is 1.0 mm is used.

[0093](Fastener)

[0094]A rivet made of stainless steel having a diameter of 4.0 mm is used.

[0095](Piece of Grindstone)

[0096]A piece of grindstone made of diamond abrasive grains whose size is 6 mm×20 mm×4.5 mm is used. Each piece of grindstone is fixed to the outer peripher...

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PUM

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Abstract

Cup type grinding wheel to be attached to a rotary tool includes a plastic base plate made of a glass fiber-reinforced plastic, a metal annular plate with pieces of grindstone or a ring-shaped grindstone on a fixing surface of the metal annular plate, and fasteners for integrating the plastic base plate with the metal annular plate. Heads of fasteners are positioned at the same level as the fixing surface or at a lower level than the fixing surface toward the plastic base plate.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims the foreign priority benefit under Title 35, United States Code, 119 (a)-(d) of Japanese Patent Application Nos. 2012-132377, 2012-170565 and 2013-50853 respectively filed on Jun. 11, 2012, Jul. 31, 2012 or Mar. 13, 2013 in the Japan Patent Office, each disclosure of which is herein incorporated by reference in each entirety.BACKGROUND OF THE INVENTION[0002]1. Technical Field[0003]The present invention relates to a cup type grinding wheel which is attached to a rotary tool such as a sander and for grinding a hard product like a concrete or ceramics-related thing, cutting it or tearing off coating of it and so on.[0004]2. Description of Background Art[0005]There are a flat type grinding wheel and a cup type grinding wheel in the prior art of a grinding wheel to be attached to a rotary tool. The former is a grinding wheel at an outer peripheral portion of a base plate like a circular plate of which tips like cutting ...

Claims

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Application Information

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IPC IPC(8): B24D7/06
CPCB24D7/066B24D7/06
Inventor KIMOTO, YUJITACHIBANA, KAZUMASA
Owner GOEI
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