JPS63166397U - - Google Patents
Info
- Publication number
- JPS63166397U JPS63166397U JP5957587U JP5957587U JPS63166397U JP S63166397 U JPS63166397 U JP S63166397U JP 5957587 U JP5957587 U JP 5957587U JP 5957587 U JP5957587 U JP 5957587U JP S63166397 U JPS63166397 U JP S63166397U
- Authority
- JP
- Japan
- Prior art keywords
- tip
- piston member
- piston
- piston head
- gun barrel
- 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
- 238000005553 drilling Methods 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- 239000002360 explosive Substances 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 239000003721 gunpowder Substances 0.000 claims 1
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Punching Or Piercing (AREA)
- Control Of Cutting Processes (AREA)
Description
第１図は本考案の実施例の一部切截した側面略
図、第２図はピストン部材の拡大縦断面図、第３
図は剪断刃の端面図、第４図、第５図、第６図は
孔を穿設する状況を説明する断面図である。
２……シリンダ室、４……銃身、５……ピスト
ンヘツド、７……ピストン部材、１４……剪断刃
、１５……くぼみ面。
Fig. 1 is a schematic partially cutaway side view of an embodiment of the present invention, Fig. 2 is an enlarged vertical sectional view of the piston member, and Fig.
The figure is an end view of the shearing blade, and FIGS. 4, 5, and 6 are sectional views illustrating the state of drilling holes. 2... Cylinder chamber, 4... Gun barrel, 5... Piston head, 7... Piston member, 14... Shearing blade, 15... Recessed surface.
Claims (1)
動されるピストンヘツドおよびこのピストンヘツ
ドを基部に有するとともに先端に剪断刃が形成さ
れたピストン部材と、前記ピストンヘツドおよび
ピストン部材を案内するシリンダ室および銃身と
を具え、ピストン部材の先端部が前進時に銃身か
ら突出する穿孔工具において、前記ピストン部材
の先端面が軸線に対して傾斜しているとともに、
この先端面の少なくとも先端側半部が軸線に向つ
て内側へ傾斜したくぼみ面に形成され、前記剪断
刃が前記先端面の外側周縁により形成されている
ことを特徴とする穿孔工具。 A piston head driven by explosive gas pressure or fluid pressure of gunpowder, a piston member having the piston head at the base and a shear blade formed at the tip, a cylinder chamber and a gun barrel for guiding the piston head and piston member. In the drilling tool, the tip end of the piston member protrudes from the gun barrel when moving forward, the tip end surface of the piston member being inclined with respect to the axis;
A drilling tool characterized in that at least a half of the tip side of the tip surface is formed as a concave surface inclined inwardly toward the axis, and the shearing blade is formed by an outer periphery of the tip surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5957587U JPS63166397U (en) | 1987-04-20 | 1987-04-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5957587U JPS63166397U (en) | 1987-04-20 | 1987-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63166397U true JPS63166397U (en) | 1988-10-28 |
Family
ID=30891193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5957587U Pending JPS63166397U (en) | 1987-04-20 | 1987-04-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63166397U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5032524A (en) * | 1973-06-25 | 1975-03-29 | Gebelius Sven Runo Vilhelm |
-
1987
- 1987-04-20 JP JP5957587U patent/JPS63166397U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5032524A (en) * | 1973-06-25 | 1975-03-29 | Gebelius Sven Runo Vilhelm |