JPH01164017U - - Google Patents
Info
- Publication number
- JPH01164017U JPH01164017U JP6205388U JP6205388U JPH01164017U JP H01164017 U JPH01164017 U JP H01164017U JP 6205388 U JP6205388 U JP 6205388U JP 6205388 U JP6205388 U JP 6205388U JP H01164017 U JPH01164017 U JP H01164017U
- Authority
- JP
- Japan
- Prior art keywords
- tip
- cutting edge
- gullets
- perforating knife
- annular
- 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.)
- Pending
Links
Landscapes
- Drilling Tools (AREA)
Description
第１図は環状穿孔刃物の実施例としての斜視図
、第２図は断面図、第３図は従来品の切刃部の部
分図、第４図は従来品の断面図。
図面の主要部を表わす符号の説明、１……環状
穿孔刃物、２……切刃部超硬金属、３……ガレツ
ト、４……フルート、５……超硬金属チツプの受
座、６……ブランク厚、７……フルート深さ、８
……マージン部。
FIG. 1 is a perspective view of an embodiment of the annular perforation blade, FIG. 2 is a sectional view, FIG. 3 is a partial view of the cutting edge of a conventional product, and FIG. 4 is a sectional view of a conventional product. Explanation of the symbols representing the main parts of the drawings: 1...Annular drilling knife, 2...Cutting blade made of carbide metal, 3...Gallet, 4...Flute, 5...Cemented carbide chip seat, 6... ...Blank thickness, 7...Flute depth, 8
...Margin section.
Claims (1)
びて形成される複数のガレツトを有し、それに連
通する切屑排出用の溝を有しないことを特徴とす
る環状穿孔刃物。 (2) 切刃部の先端から超硬金属チツプの長さま
での距離以降は段付となつて未端に向つてブラン
クが薄くなつていることを特徴とする環状穿孔刃
物。[Claims for Utility Model Registration] (1) A cylindrical cutter body having a plurality of gullets extending from the tip cutting edge to the distal end, and having no chip discharge groove communicating with the gullets. An annular perforating knife. (2) An annular perforating knife characterized in that the blank becomes stepped after the distance from the tip of the cutting edge to the length of the cemented carbide tip and becomes thinner toward the end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6205388U JPH01164017U (en) | 1988-05-10 | 1988-05-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6205388U JPH01164017U (en) | 1988-05-10 | 1988-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01164017U true JPH01164017U (en) | 1989-11-15 |
Family
ID=31287688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6205388U Pending JPH01164017U (en) | 1988-05-10 | 1988-05-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01164017U (en) |
-
1988
- 1988-05-10 JP JP6205388U patent/JPH01164017U/ja active Pending
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