JPH045251Y2 - - Google Patents
Info
- Publication number
- JPH045251Y2 JPH045251Y2 JP1987141196U JP14119687U JPH045251Y2 JP H045251 Y2 JPH045251 Y2 JP H045251Y2 JP 1987141196 U JP1987141196 U JP 1987141196U JP 14119687 U JP14119687 U JP 14119687U JP H045251 Y2 JPH045251 Y2 JP H045251Y2
- Authority
- JP
- Japan
- Prior art keywords
- nut body
- substrate
- recess
- offset
- mounting hole
- 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.)
- Expired
Links
- 239000000758 substrate Substances 0.000 claims description 42
- 239000012790 adhesive layer Substances 0.000 claims description 13
- 238000005498 polishing Methods 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009751 slip forming Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
この考案は、円板状の基板の一側に多数枚の研
磨布紙を放射状に配置接着した回転研削研磨具に
関し、そのグラインダーの駆動軸への取付構造の
改良を図つたものである。[Detailed description of the invention] (Field of industrial application) This invention relates to a rotary grinding tool in which a large number of coated abrasive papers are arranged and bonded radially on one side of a disc-shaped substrate, and the drive shaft of the grinder is This is an attempt to improve the mounting structure.
（従来の技術）
従来、プラスチツク製または砥石製の円形基板
の一側に、短柵状の研磨布紙を放射状に接着した
研削兼研磨用の回転砥石は、例えば特開昭60−
94271号公報で公知である。この種の砥石も含め
て従来の一般的な砥石は、ねじ止めによつてグラ
インダーの駆動軸に固定されていた。詳しくは、
駆動軸の突端にねじ軸が設けられており、このね
じ軸にカラーと回転砥石を順に挿通した後、ねじ
軸にナツトをねじ込むことで回転砥石の取付を行
つていた。従つて、砥石の交換時にはグラインダ
ーの付属工具でナツトの締緩を行う必要があつ
た。(Prior Art) Conventionally, a rotary grinding wheel for grinding and polishing, in which short fence-shaped abrasive coated paper is radially bonded to one side of a circular substrate made of plastic or a grinding wheel, is disclosed in, for example, Japanese Patent Laid-Open No. 1983-1999.
It is publicly known from Publication No. 94271. Conventional general grindstones, including this type of grindstone, have been fixed to the drive shaft of a grinder with screws. For more information,
A threaded shaft is provided at the tip of the drive shaft, and after a collar and a rotating grindstone are inserted into this threaded shaft in order, the rotating grindstone is attached by screwing a nut onto the threaded shaft. Therefore, when replacing the grindstone, it was necessary to tighten and loosen the nut using a tool attached to the grinder.
この砥石交換をより簡単な操作で行えるように
するために、前記ナツトに相当する座付ナツトを
砥石と一体化して、締緩工具を用いることなく砥
石の駆動軸への着脱を可能としたものがある（実
公昭61−40465号公報参照）。これでは、第４図に
示すように、座付ナツト３０のボス部３１を砥石
３２の中央の取付穴３３に挿通した後、ボス部３
１の挿通始端縁をかしめ固定することにより、座
付ナツト３０を砥石３２と一体化していた。第４
図中、符号２３は駆動軸、２４はねじ軸、２５は
カラー、３４は取付面を示している。上記座付ナ
ツト３０には前記ねじ軸２４に対応するねじ穴３
５が形成されている。このように座付ナツト３０
を一体に備えた回転砥石によれば、砥石３２全体
を手で捻り操作して座付ナツト３０をねじ軸２４
にねじ込むことができ、その着脱を工具を用いる
ことなく行える。 In order to make this grindstone replacement easier, a seat nut corresponding to the above-mentioned nut is integrated with the grindstone, making it possible to attach and detach the grindstone to the drive shaft without using a tightening/loosening tool. (Refer to Utility Model Publication No. 61-40465). In this case, as shown in FIG.
The seat nut 30 was integrated with the grindstone 32 by caulking and fixing the insertion starting edge of the nut 1. Fourth
In the figure, reference numeral 23 indicates a drive shaft, 24 a screw shaft, 25 a collar, and 34 a mounting surface. The seat nut 30 has a screw hole 3 corresponding to the screw shaft 24.
5 is formed. Like this, the nut with seat 30
According to the rotary whetstone integrally equipped with
It can be screwed into the holder and can be attached and detached without the use of tools.
（考案が解決しようとする課題）
この考案は、多数枚の研磨布紙が基板に接着固
定された回転砥石において、上記のようなナツト
体を基板と一体化して、砥石のグラインダー駆動
軸への着脱操作を簡便化するについて、次のよう
な問題点の解消を図つたものである。(Problem to be solved by the invention) This invention is a rotary grindstone in which a large number of coated abrasive papers are adhesively fixed to a substrate, and the nut body as described above is integrated with the substrate to connect the grindstone to the grinder drive shaft. This is intended to solve the following problems in simplifying the attachment/detachment operation.
ナツト体を基板に対してかしめ固定する構造と
した場合、とくに基板をプラスチツク成形品で構
成する際に、基板の機械的強度が不足して十分な
かしめ強度が得られにくく、ナツト体から基板へ
のトルク伝達量に限界があつた。また、基板を砥
石で構成した場合でも、かしめによる挾持面の摩
擦力だけでトルク伝達を行わねばならず、比較的
小さな駆動トルクのグラインダーにしか回転砥石
を適用できない不利があつた。 If the structure is such that the nut body is caulked and fixed to the board, it is difficult to obtain sufficient caulking strength due to insufficient mechanical strength of the board, especially when the board is made of a plastic molded product. There was a limit to the amount of torque transmitted. Further, even when the substrate is made of a grindstone, torque must be transmitted only by the frictional force of the clamping surfaces due to caulking, and there is a disadvantage that the rotary grindstone can only be applied to grinders with a relatively small drive torque.
また、ナツト体をかしめ付ける構造とした場
合、かしめ部が砥石の取付面３４から突出しない
よう慎重に加工を行う必要があり、加工が面倒で
あつた。かしめ部が取付面３４から突出している
と、砥石３２を正規の姿勢で固定することができ
ず、使用時に回転面が傾いて不整回転を生じ、研
削むらや振動を生じる。 In addition, when the nut body is constructed to be caulked, it is necessary to carefully process the caulked portion so that it does not protrude from the mounting surface 34 of the grindstone, and the machining is troublesome. If the caulked portion protrudes from the mounting surface 34, the grindstone 32 cannot be fixed in a normal position, and the rotating surface is tilted during use, resulting in irregular rotation, resulting in uneven grinding and vibration.
この考案は上記に鑑み提案されたものであつ
て、ナツト体の固定構造を改善することにより、
ナツト体から砥石へのトルク伝達を確実化した研
削研磨用の回転砥石を得ることを主たる目的とす
る。さらに、このナツト体を利用して多数枚の研
磨布紙の位置決めを容易にすることも目的とす
る。 This idea was proposed in view of the above, and by improving the fixing structure of the nut body,
The main objective is to obtain a rotating grindstone for grinding and polishing that ensures torque transmission from the nut body to the grindstone. Another object of the present invention is to use this nut body to facilitate positioning of a large number of coated abrasive papers.
（課題を解決するための手段）
このため、この考案では、ナツト体５と基板２
とを両者２，５の接合面１８で機械的に係合連結
し、この係合構造でトルク伝達を行うようにす
る。さらに、研磨布紙３を固定するための接着剤
層１１を前記接合面１８にわたつて連続形成して
おき、この接着剤層１１を介してナツト体５を基
板２に接着固定する。加えて、上記ナツト体５の
周縁部で研磨布紙３の位置決めを行うことにあ
る。(Means for solving the problem) Therefore, in this invention, the nut body 5 and the substrate 2
are mechanically engaged and connected at the joint surfaces 18 of both 2 and 5, and torque is transmitted through this engagement structure. Further, an adhesive layer 11 for fixing the coated abrasive paper 3 is continuously formed over the bonding surface 18, and the nut body 5 is adhesively fixed to the substrate 2 via this adhesive layer 11. In addition, the coated abrasive paper 3 is positioned at the peripheral edge of the nut body 5.
具体的には、例えば第１図に示すように、中央
に取付穴４を有し、該取付穴４部分がその外周部
分に対して板厚方向にオフセツトされ、このオフ
セツトによりオフセツト凹部７Ａが形成された円
形状の基板２と、該基板２のオフセツト凹部７Ａ
全体を塞ぐとともに周縁部１４がオフセツト凹部
７Ａより径方向外側にはみ出るように形成され
て、上記基板２のオフセツト凹部７Ａに接着剤層
１１を介して接着固定され、上記取付穴４を通し
てグラインダーの駆動軸２３が螺合されるナツト
体５と、上記基板２の一側における上記ナツト体
５より外周部分に内周端が上記ナツト体５の周縁
部１４に位置決めされて上記ナツト体５の接着剤
層１１と一連に設けられた接着剤層１１を介して
放射状にかつ互いに一部を重合させた状態で接着
された多数枚の研磨布紙３とを備える。上記基板
２のオフセツト凹部７Ａとナツト体５との接合面
１８の一方にピン状の突起２０が、他方に該突起
２０が密嵌合する凹部２１がそれぞれ形成されて
いるものとする。 Specifically, as shown in FIG. 1, for example, it has a mounting hole 4 in the center, and the mounting hole 4 portion is offset in the plate thickness direction with respect to its outer peripheral portion, and this offset forms an offset recess 7A. The circular substrate 2 and the offset recess 7A of the substrate 2
The peripheral edge portion 14 is formed to close the entire area and protrude radially outward from the offset recess 7A, and is adhesively fixed to the offset recess 7A of the substrate 2 via the adhesive layer 11, and is driven through the mounting hole 4 to drive the grinder. A nut body 5 to which the shaft 23 is screwed, and an adhesive of the nut body 5 with an inner peripheral end positioned on the peripheral edge 14 of the nut body 5 at an outer peripheral portion of the nut body 5 on one side of the substrate 2. It includes a layer 11 and a large number of coated abrasive papers 3 which are bonded radially through an adhesive layer 11 provided in series with each other in a state where they are partially overlapped. It is assumed that a pin-shaped protrusion 20 is formed on one side of the joint surface 18 between the offset recess 7A of the substrate 2 and the nut body 5, and a recess 21 into which the protrusion 20 is tightly fitted is formed on the other side.
（作用）
このことにより、この考案では、固定状態にお
いて、ナツト体５は基板２に体して突起２０と凹
部２１とが密嵌合した状態で接着固定される。つ
まり、接着剤層１１によつてナツト体５を基板２
に分離不能に一体化し、一方、ナツト体５から基
板２へのトルク伝達は主に突起２０と凹部２１と
の機械的な係合構造によつて行うものとして機能
の分化を図ることができる。従つて、基板２の駆
動トルクが大きい場合でも確実にトルク伝達を行
うことが可能となり、また、加工の容易な接着に
よつてナツト体５の固定を行えるものとなる。さ
らに、研磨布紙３の内周端をナツト体５の周縁部
１４で位置決めして該研磨布紙３の接着を行うこ
とができるので、研磨布紙３の固定も容易に行う
ことができる。(Function) Accordingly, in this invention, in the fixed state, the nut body 5 is adhesively fixed to the substrate 2 with the protrusion 20 and the recess 21 tightly fitted. That is, the adhesive layer 11 connects the nut body 5 to the substrate 2.
On the other hand, the torque transmission from the nut body 5 to the base plate 2 is mainly performed by the mechanical engagement structure between the protrusion 20 and the recess 21, so that the function can be differentiated. Therefore, even when the drive torque of the substrate 2 is large, it is possible to reliably transmit the torque, and the nut body 5 can be fixed by adhesive bonding, which is easy to process. Furthermore, since the inner peripheral end of the coated abrasive paper 3 can be positioned by the peripheral edge 14 of the nut body 5 and the coated abrasive paper 3 can be bonded, the coated abrasive paper 3 can also be easily fixed.
（実施例）
第１図ないし第３図はこの考案をオフセツト型
の回転研削研磨具に適用した実施例を示してい
る。(Embodiment) FIGS. 1 to 3 show an embodiment in which this invention is applied to an offset type rotary grinding and polishing tool.
第２図において、回転研削研磨具１は、レジノ
イド砥石で構成される円盤状の基板２と、その板
面一側に放射状に配置固定される研磨布紙３と、
基板２の中央に通設された取付穴４に固定される
ナツト体５とからなる。上記基板２はリング状の
研削部６を有し、この研削部６の内側に連続して
円錐台状の取付部７を膨出形成し、研削部６に対
してオフセツト（***）された取付部７の端壁８
に前記取付穴４が通設されている。第１図の拡大
表示部に示すように、上記取付穴４の内面にはプ
レス成形品からなる金属板製の口金９がインサー
トされている。この口金９は筒壁９ａとその下端
のフランジ９ｂとからなり、上記端壁８の内面側
においてフランジ９ｂの下表面のみが露出する状
態で基板２に埋設固定されている。 In FIG. 2, the rotary grinding and polishing tool 1 includes a disk-shaped substrate 2 made of a resinoid grindstone, and coated abrasive paper 3 arranged and fixed radially on one side of the plate surface.
It consists of a nut body 5 fixed to a mounting hole 4 passed through the center of the board 2. The substrate 2 has a ring-shaped ground part 6, and a truncated conical mounting part 7 is formed continuously inside the ground part 6, and the mounting part 7 is offset (raised) with respect to the ground part 6. End wall 8 of section 7
The mounting hole 4 is provided through the mounting hole 4. As shown in the enlarged view of FIG. 1, a base 9 made of a press-formed metal plate is inserted into the inner surface of the mounting hole 4. The cap 9 is composed of a cylindrical wall 9a and a flange 9b at its lower end, and is embedded and fixed in the substrate 2 on the inner surface of the end wall 8 with only the lower surface of the flange 9b exposed.
上記基板２の研削部６の研削面側に研磨布紙３
が接着剤層１１を介して接着固定されている。こ
の研磨布紙３は短柵状に形成されていて、その長
辺部同士が上下に重なる状態で研削部６上を放射
姿勢で周回するよう配置されて接着固定されてい
る。場合によつては、複数枚の研磨布紙３を一組
にして、これを前記と同様に配置することもあ
る。 Abrasive cloth paper 3 is placed on the grinding surface side of the grinding section 6 of the substrate 2.
are adhesively fixed via an adhesive layer 11. This coated abrasive paper 3 is formed in the shape of a short fence, and is arranged and adhesively fixed so as to go around the grinding part 6 in a radial posture with its long sides overlapping each other vertically. In some cases, a plurality of coated abrasive papers 3 may be combined into a set and arranged in the same manner as described above.
上記ナツト体５はアルミニウム等の金属または
プラスチツク成形体からなり、前記取付部７の内
面空間、つまりオフセツト凹部７Ａの全体を塞ぐ
断面形状に形成されている。第１図において、ナ
ツト体５は断面台形状に形成され、その上底部中
央に取付穴４に内嵌する短ボス１２を突設し、こ
の短ボス１２端面から下底部にわたつてねじ穴１
３を貫通して形成している。このナツト体５の下
底側の周縁部１４は、前記オフセツト凹部７Ａよ
り径方向外側にはみ出るように形成されており、
この周縁部１４が基板２の研削部６の内縁寄りに
位置して、研磨布紙３を接着固定する際の位置決
めを行うようにしている。また、ナツト体５の底
端面の周方向４個所に締緩操作用の操作穴１５が
形成されている。 The nut body 5 is made of a metal such as aluminum or a plastic molded body, and is formed in a cross-sectional shape that closes the entire inner space of the mounting portion 7, that is, the offset recess 7A. In FIG. 1, the nut body 5 is formed to have a trapezoidal cross section, and has a short boss 12 protruding from the center of its upper base which fits into the mounting hole 4, and a threaded hole 1 extending from the end face of the short boss 12 to the lower base.
It is formed to penetrate through 3. The peripheral edge 14 on the bottom side of the nut body 5 is formed to protrude radially outward from the offset recess 7A,
This peripheral edge portion 14 is located near the inner edge of the grinding portion 6 of the substrate 2, and is used for positioning when the coated abrasive paper 3 is bonded and fixed. Furthermore, operation holes 15 for tightening and loosening operations are formed at four locations in the circumferential direction on the bottom end surface of the nut body 5.
上記ナツト体５は研磨布紙３を固定するための
接着剤層１１を利用して基板２に接着固定され
る。つまり、研磨布紙３の基板２への接着面１７
から、ナツト体５と基板２との接合面１８にわた
つて接着剤層１１を連続して形成しておき、短ボ
ス１２が取付穴４に嵌合した状態でナツト体５を
基板２に接着固定する。この固定状態において、
ナツト体５から基板２へのトルク伝達を確実に行
えるようにするために、両者２，５の接合面１８
に機械的な連結手段１９を設けている。 The nut body 5 is adhesively fixed to the substrate 2 using an adhesive layer 11 for fixing the coated abrasive paper 3. In other words, the adhesive surface 17 of the coated abrasive paper 3 to the substrate 2
Then, an adhesive layer 11 is continuously formed over the joint surface 18 between the nut body 5 and the substrate 2, and the nut body 5 is bonded to the substrate 2 with the short boss 12 fitted into the mounting hole 4. Fix it. In this fixed state,
In order to ensure torque transmission from the nut body 5 to the substrate 2, the joint surface 18 of both 2 and 5 is
are provided with mechanical coupling means 19.
第２図において、この連結手段１９は、ナツト
体５の短ボス１２周囲４個所に突設されたピン形
状の突起２０と、この突起２０に対応して上記端
壁８の内面に形成された４個の凹部２１とからな
る。そして、突起２０が凹部２１に密嵌合した状
態で、ナツト体５を基板２に接着固定することに
より、連結手段１９を介してナツト体５から基板
２への駆動トルクを伝える訳である。なお、上記
凹部２１の開口縁は、口金９のフランジ９ｂに通
設された通口９ｅで構成されていることにより補
強されている。 In FIG. 2, the connecting means 19 includes pin-shaped protrusions 20 protruding from four locations around the short boss 12 of the nut body 5, and formed on the inner surface of the end wall 8 in correspondence with the protrusions 20. It consists of four recesses 21. Then, by adhesively fixing the nut body 5 to the substrate 2 with the protrusion 20 tightly fitted into the recess 21, the driving torque is transmitted from the nut body 5 to the substrate 2 via the connecting means 19. Note that the opening edge of the recess 21 is reinforced by being constituted by a passage 9e extending through the flange 9b of the base 9.
第３図において、グラインダーの駆動軸２３の
下部にねじ軸２４が突設されている。このねじ軸
２４にカラー２５を挿通した後、端壁８がカラー
２５に対向する状態でナツト体５をねじ軸２４に
ねじ込む。このとき、基板２を手で掴んで捻り操
作すると、ナツト体５がねじ軸２４に強固にねじ
込まれるので、締結工具を用いることなく、回転
研削研磨具１の駆動軸２３への取付けを行うこと
ができる。なお、駆動軸２３の回転方向と、ねじ
穴１３およびねじ軸２４の螺進方向との関係は、
使用時に基板２が受ける研削反力によつて、ナツ
ト体５がねじ軸２４上を締り勝手に螺進するよう
に設定しておく。 In FIG. 3, a screw shaft 24 is provided protruding from the lower part of the drive shaft 23 of the grinder. After inserting the collar 25 into the screw shaft 24, the nut body 5 is screwed into the screw shaft 24 with the end wall 8 facing the collar 25. At this time, when the substrate 2 is grasped by hand and twisted, the nut body 5 is firmly screwed into the screw shaft 24, so that the rotary grinding and polishing tool 1 can be attached to the drive shaft 23 without using a fastening tool. I can do it. The relationship between the rotational direction of the drive shaft 23 and the spiral direction of the screw hole 13 and screw shaft 24 is as follows.
The nut body 5 is set so as to be screwed freely on the screw shaft 24 by the grinding reaction force that the substrate 2 receives during use.
なお、上記操作穴１５を締緩工具で操作して回
転研削研磨具１の着脱を行うこともできるが、こ
の着脱操作はナツト体５のねじ軸２４へのねじ込
み強度が極端に大きい場合等に限られ、通常は手
で基板２を直接捻り操作して着脱を行うことがで
きる。 Note that the rotary grinding and polishing tool 1 can be attached and detached by operating the operating hole 15 with a tightening/loosening tool, but this attachment/detachment operation is only recommended when the strength of screwing the nut body 5 into the threaded shaft 24 is extremely high. Usually, the board 2 can be attached and detached by directly twisting it by hand.
（変形例）
上記実施例とは異なり、連結手段１９は、突起
２０を基板２に設け、凹部２１をナツト体５に設
けるよう変更することもできる。また、突起２０
と凹部２１とがナツト体５に混在するよう設けて
あつてもよい。(Modification) Unlike the above embodiment, the connecting means 19 can be modified so that the protrusion 20 is provided on the substrate 2 and the recess 21 is provided on the nut body 5. In addition, the protrusion 20
and the recess 21 may be provided in the nut body 5 in a mixed manner.
また、突起２０と凹部２１との形成位置は、端
壁８以外にあつてもよく、例えば端壁８と研削部
６との間の傾斜壁に設けることもできる。この場
合は、凹部２１を貫通穴にすることもあり、とく
に基板２をプラスチツク成形品で形成する場合に
は、突起２０を凹部２１から外面に突出させて、
その突出端を溶融して抜止めを図るようにするこ
ともできる。 Furthermore, the protrusions 20 and the recesses 21 may be formed at locations other than the end wall 8, for example, on the inclined wall between the end wall 8 and the grinding portion 6. In this case, the recess 21 may be made into a through hole, and especially when the substrate 2 is made of a plastic molded product, the protrusion 20 may be made to protrude from the recess 21 to the outside.
It is also possible to melt the protruding end to prevent it from coming off.
（考案の効果）
以上説明したように、本考案の回転研削研磨具
によれば、ナツト体５と基板２との接合面１８に
設けたピン状の突起２０と該突起２０が密嵌合す
る凹部２１との機械的な係合構造によつて、主に
ナツト体５から基板２へ駆動トルクを伝達するよ
うにしたので、基板２を大きな駆動トルクで回転
駆動できることとなつた。これにより、グライン
ダーの駆動回転数を増加し、あるいは大径の回転
研削研磨具を用いて効率良く研削作業あるいは研
磨作業を行うことが可能となる。また、機能を分
化して突起２０と凹部２１とで主にトルク伝達を
行うようにするので、ナツト体５の基板２に対す
る固定強度を、容易に脱落しない程度にすること
ができ、加工の容易な接着によつてナツト体５の
固定を行うことができる。しかも、研磨布紙３を
固定するための接着剤層１１を接合面１８にも連
続形成しておいて、ナツト体５の接着固定を行う
とともに研磨布紙３の接着をナツト体５で位置決
めして行うので、基板２と研磨布紙３およびナツ
ト体５との組立を容易に合理的に行うことがで
き、全体として回転研削研磨具の製造コストを低
減できるものとなつた。さらに、従来の如くかし
め部が砥石の取付面から突出することによる、砥
石の取付姿勢不良を生じることもない。(Effect of the invention) As explained above, according to the rotary grinding and polishing tool of the invention, the pin-shaped protrusion 20 provided on the joint surface 18 of the nut body 5 and the substrate 2 is tightly fitted with the protrusion 20. Since the driving torque is mainly transmitted from the nut body 5 to the substrate 2 through the mechanical engagement structure with the recess 21, the substrate 2 can be rotationally driven with a large driving torque. This makes it possible to increase the drive rotational speed of the grinder or to efficiently perform grinding or polishing operations using a large-diameter rotary grinding and polishing tool. In addition, since the functions are differentiated so that torque is mainly transmitted between the protrusion 20 and the recess 21, the fixing strength of the nut body 5 to the base plate 2 can be set to such a level that it will not easily fall off, making it easy to process. The nut body 5 can be fixed by proper adhesion. In addition, an adhesive layer 11 for fixing the coated abrasive paper 3 is continuously formed on the joint surface 18, and the nut body 5 is fixed with the adhesive and the coated abrasive paper 3 is positioned with the nut body 5. Therefore, the substrate 2, coated abrasive paper 3, and nut body 5 can be assembled easily and rationally, and the manufacturing cost of the rotary grinding tool can be reduced as a whole. Furthermore, there is no problem in the mounting position of the grindstone due to the caulked portion protruding from the mounting surface of the grindstone as in the conventional case.
さらに、オフセツト凹部７Ａの全体を塞ぐ形状
にナツト体５を構成したことにより、ナツト体５
の基板２に体する接着面積を大きくできるので、
接着強度を向上する上で有利であり、しかもナツ
ト体５が基板２の補強体として機能するので、と
くに基板２をプラスチツク成形品で構成する場合
に有利である。 Furthermore, by configuring the nut body 5 in a shape that completely closes the offset recess 7A, the nut body 5
Since the adhesive area on the substrate 2 can be increased,
This is advantageous in improving adhesive strength, and since the nut body 5 functions as a reinforcing body for the substrate 2, it is particularly advantageous when the substrate 2 is made of a plastic molded product.
第１図ないし第３図はこの考案の実施例を示し
ており、第１図は回転研削研磨具の縦断面図、第
２図は分解斜視図、第３図は駆動軸に装着した状
態の縦断面図である。第４図は従来砥石を示す分
離状態の縦断面図である。
１……回転研削研磨具、２……基板、３……研
磨布紙、４……取付穴、５……ナツト体、７Ａ…
…オフセツト凹部、１１……接着剤層、１４……
ナツト体周縁部、１７……接着面、１８……接合
面、２０……突起、２１……凹部、２３……駆動
軸、２４……ねじ軸。
Figures 1 to 3 show an embodiment of this invention, with Figure 1 being a longitudinal cross-sectional view of the rotary grinding and polishing tool, Figure 2 being an exploded perspective view, and Figure 3 showing the rotary grinding tool mounted on the drive shaft. FIG. FIG. 4 is a longitudinal sectional view of a conventional grindstone in a separated state. 1...Rotary grinding polishing tool, 2...Substrate, 3...Abrasive coated paper, 4...Mounting hole, 5...Nut body, 7A...
...Offset recess, 11...Adhesive layer, 14...
Nut body periphery, 17...adhesive surface, 18...joint surface, 20...protrusion, 21...recess, 23...drive shaft, 24...screw shaft.
Claims (1)
外周部分に対して板厚方向にオフセツトされ、こ
のオフセツトによりオフセツト凹部７Ａが形成さ
れた円形状の基板２と、 該基板２のオフセツト凹部７Ａ全体を塞ぐとと
もに周縁部１４がオフセツト凹部７Ａより径方向
外側にはみ出るように形成されて、上記基板２の
オフセツト凹部７Ａに接着剤層１１を介して接着
固定され、上記取付穴４を通してグラインダーの
駆動軸２３が螺合されるナツト体５と、 上記基板２の一側における上記ナツト体５より
外周部分に内周端が上記ナツト体５の周縁部１４
に位置決めされて上記ナツト体５の接着剤層１１
と一連に設けられた接着剤層１１を介して放射状
にかつ互いに一部を重合させた状態で接着された
多数枚の研磨布紙３とを備え、 上記基板２のオフセツト凹部７Ａとナツト体５
との接合面１８の一方にピン状の突起２０が、他
方に該突起２０が密嵌合する凹部２１がそれぞれ
形成されていることを特徴とする回転研削研磨
具。[Claims for Utility Model Registration] A circular board having a mounting hole 4 in the center, the mounting hole 4 portion being offset in the plate thickness direction with respect to its outer circumferential portion, and an offset recess 7A formed by this offset. 2, the peripheral edge portion 14 is formed to cover the entire offset recess 7A of the substrate 2 and protrude radially outward from the offset recess 7A, and is adhesively fixed to the offset recess 7A of the substrate 2 via an adhesive layer 11. a nut body 5 into which the drive shaft 23 of the grinder is screwed through the mounting hole 4;
The adhesive layer 11 of the nut body 5 is positioned at
and a large number of coated abrasive papers 3 which are bonded radially through adhesive layers 11 provided in series in a state where they are partially overlapped with each other, the offset recess 7A of the substrate 2 and the nut body 5
A rotary grinding and polishing tool characterized in that a pin-shaped protrusion 20 is formed on one side of a joint surface 18, and a recess 21 into which the protrusion 20 is tightly fitted is formed on the other side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987141196U JPH045251Y2 (en) | 1987-09-16 | 1987-09-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987141196U JPH045251Y2 (en) | 1987-09-16 | 1987-09-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6446167U JPS6446167U (en) | 1989-03-22 |
| JPH045251Y2 true JPH045251Y2 (en) | 1992-02-14 |
Family
ID=31406052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987141196U Expired JPH045251Y2 (en) | 1987-09-16 | 1987-09-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH045251Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6094271A (en) * | 1983-10-29 | 1985-05-27 | Nippon Rejibon Kk | Rotary grinding polishing tool |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55156863U (en) * | 1979-04-24 | 1980-11-11 |
-
1987
- 1987-09-16 JP JP1987141196U patent/JPH045251Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6094271A (en) * | 1983-10-29 | 1985-05-27 | Nippon Rejibon Kk | Rotary grinding polishing tool |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6446167U (en) | 1989-03-22 |
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