JPS63140313U - - Google Patents

Info

Publication number
JPS63140313U
JPS63140313U JP3176087U JP3176087U JPS63140313U JP S63140313 U JPS63140313 U JP S63140313U JP 3176087 U JP3176087 U JP 3176087U JP 3176087 U JP3176087 U JP 3176087U JP S63140313 U JPS63140313 U JP S63140313U
Authority
JP
Japan
Prior art keywords
cutter
end side
distal end
flange
contact
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.)
Granted
Application number
JP3176087U
Other languages
Japanese (ja)
Other versions
JPH0634890Y2 (en
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 filed Critical
Priority to JP1987031760U priority Critical patent/JPH0634890Y2/en
Publication of JPS63140313U publication Critical patent/JPS63140313U/ja
Application granted granted Critical
Publication of JPH0634890Y2 publication Critical patent/JPH0634890Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Drilling Tools (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本実施例にかかるコアドリルの全体斜
視図、第２図は先端に切刃の形成された外筒をフ
ランジ部から外した状態での全体の斜視図、第３
図は全体平面図、第４図は第３図のＡ―Ａ断面図
、第５図は他の実施例を示す部分側断面図、第６
図は同平面図である。 １…取着軸、２…フランジ部、２ｂ，２ｂ′…
段部（当接部）、５，５′…テーパ面、６…外刃
（刃物）、６ｂ，６ｂ′…段部（当接部）、７，
７′…突起。 Fig. 1 is an overall perspective view of the core drill according to this embodiment, Fig. 2 is an overall perspective view with the outer cylinder with a cutting edge formed at its tip removed from the flange, and Fig. 3 is an overall perspective view of the core drill according to the present embodiment.
The figure is an overall plan view, FIG. 4 is a sectional view taken along line A-A in FIG. 3, FIG. 5 is a partial side sectional view showing another embodiment, and FIG.
The figure is a plan view of the same. 1... Mounting shaft, 2... Flange portion, 2b, 2b'...
Stepped part (contact part), 5, 5'...Tapered surface, 6...Outer blade (knife), 6b, 6b'...Stepped part (contacted part), 7,
7'...protrusion.

Claims (1)

【実用新案登録請求の範囲】 少なくとも、基端側に駆動用工具に取着される
取着軸と、この先端側に円筒状の刃物を有するコ
アドリルの該円筒状の刃物の脱着自在構造におい
て、 上記取着軸の先端側に円板状のフランジ部を設
け、このフランジ部の円板状の周縁部の複数箇所
に、軸方向において基端側から先端側に拡径する
方向に傾斜し、且つ平面的に少なくとも上記円板
状のフランジ部の周縁の曲率より大きい曲率を有
するテーパ面を形成するとともに、上記テーパ面
の先端側あるいは基端側の少なくとも一方に当接
部を形成し、 上記円筒状の刃物の内周基端側に上記フランジ
部の当接部が当接する当接部を形成し、この当接
部に離間して基端側あるいは先端側の少なくとも
一方に、上記テーパ面の先端の最小半径となる部
分に干渉しない高さの半径方向内方への突起を形
成し、 フランジ部への刃物の取着に際し、上記テーパ
面の先端で最小半径となる部分あるいはその近傍
部分を刃物の基端部の突起を通過させてフランジ
部の先端側が刃物の当接部に当接するよう刃物を
装着し、その位置より刃物をフランジ部に対し相
対的に回転させて刃物側の突起と当接部とでフラ
ンジ部側を押圧挾持してそれらを固定するよう構
成したことを特徴とするコアドリルの脱着自在構
造。[Claims for Utility Model Registration] At least, in a core drill having a mounting shaft attached to a driving tool on the base end side and a cylindrical cutter on the distal end side of the core drill, the cylindrical cutter can be freely attached and detached, A disk-shaped flange portion is provided on the distal end side of the attachment shaft, and the circumferential edge portion of the disk-shaped flange portion is inclined in a direction in which the diameter increases from the proximal end side to the distal end side in the axial direction, and forming a tapered surface having a curvature larger in plane than at least a curvature of the peripheral edge of the disk-shaped flange portion, and forming an abutting portion on at least one of the distal end side or the proximal end side of the tapered surface, A contact portion is formed on the proximal side of the inner periphery of the cylindrical cutter, and a contact portion is formed on which the contact portion of the flange portion contacts, and a distal end of the tapered surface is provided on at least one of the proximal side or the distal end side, spaced apart from the contact portion. A radially inward protrusion with a height that does not interfere with the minimum radius of the blade is formed, and when attaching the cutter to the flange, the minimum radius of the tip of the tapered surface or its vicinity is attached to the cutter. Pass the protrusion on the proximal end of the cutter and attach the cutter so that the tip of the flange comes into contact with the abutting part of the cutter. From that position, rotate the cutter relative to the flange and bring it into contact with the protrusion on the cutter. A removable structure of a core drill, characterized in that the flange part side is pressed and clamped between the contact part and the flange part side to fix them.
JP1987031760U 1987-03-03 1987-03-03 Detachable structure of core drill Expired - Lifetime JPH0634890Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987031760U JPH0634890Y2 (en) 1987-03-03 1987-03-03 Detachable structure of core drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987031760U JPH0634890Y2 (en) 1987-03-03 1987-03-03 Detachable structure of core drill

Publications (2)

Publication Number Publication Date
JPS63140313U true JPS63140313U (en) 1988-09-14
JPH0634890Y2 JPH0634890Y2 (en) 1994-09-14

Family

ID=30837792

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987031760U Expired - Lifetime JPH0634890Y2 (en) 1987-03-03 1987-03-03 Detachable structure of core drill

Country Status (1)

Country Link
JP (1) JPH0634890Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04105811A (en) * 1990-08-28 1992-04-07 Miyanaga:Kk Core drill

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101898989B1 (en) * 2018-04-03 2018-09-14 코리아에프에이(주) Long holesaw for composite insulated panel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5060696U (en) * 1973-09-28 1975-06-04

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5060696U (en) * 1973-09-28 1975-06-04

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04105811A (en) * 1990-08-28 1992-04-07 Miyanaga:Kk Core drill

Also Published As

Publication number Publication date
JPH0634890Y2 (en) 1994-09-14

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