JPS61105512U - - Google Patents
Info
- Publication number
- JPS61105512U JPS61105512U JP18971784U JP18971784U JPS61105512U JP S61105512 U JPS61105512 U JP S61105512U JP 18971784 U JP18971784 U JP 18971784U JP 18971784 U JP18971784 U JP 18971784U JP S61105512 U JPS61105512 U JP S61105512U
- Authority
- JP
- Japan
- Prior art keywords
- bit
- center
- center bit
- narrow diameter
- cutter blade
- 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
Links
- 238000005553 drilling Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Drilling Tools (AREA)
Description
添付図面は、この考案の一実施例並びに穿孔作
業要領を示すものであつて、第１図は本管への施
工作業要領を示す一部断面図、第２図はセンター
ビツトをカツター刃へ取り付けた状態を示す斜視
図、第３図はカツター刃並びにセンタービツトの
各構成部材の組合せ状態を示す斜視図、第４図は
センタービツト並びに筒体を示す斜視図、第５図
はセンタービツトによる切取り片の保持状態を示
す斜視図である。
２……カツター刃、３……センタービツト、４
……細径部、６……切り割り部、７……筒体。
The attached drawings show one embodiment of this invention and the procedure for drilling. Figure 1 is a partial sectional view showing the procedure for drilling into the main pipe, and Figure 2 is a diagram showing how to attach the center bit to the cutter blade. FIG. 3 is a perspective view showing the cutter blade and the center bit in a combined state, FIG. 4 is a perspective view showing the center bit and cylinder, and FIG. 5 is a perspective view showing the center bit cut away. It is a perspective view which shows the holding state of a piece. 2... Cutter blade, 3... Center bit, 4
...Small diameter part, 6...Cut part, 7...Cylinder body.
Claims (1)
ンタービツト３において、そのセンタービツト３
の軸部に段落状の細径部４を形成するとともに、
該細径部４に、その胴部においてビツトの径より
も太く、かつ、その側部に切り割り部６を形成し
た形の筒体７を装着したことを特徴とするセンタ
ービツトの構造。 In the center bit 3 attached to the center of the circular cutter blade 2, the center bit 3
While forming a step-like narrow diameter part 4 in the shaft part,
The structure of the center bit is characterized in that the narrow diameter part 4 is equipped with a cylinder 7 whose body part is thicker than the diameter of the bit and has a cut part 6 formed on the side thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18971784U JPS6346180Y2 (en) | 1984-12-13 | 1984-12-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18971784U JPS6346180Y2 (en) | 1984-12-13 | 1984-12-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61105512U true JPS61105512U (en) | 1986-07-04 |
| JPS6346180Y2 JPS6346180Y2 (en) | 1988-12-01 |
Family
ID=30747164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18971784U Expired JPS6346180Y2 (en) | 1984-12-13 | 1984-12-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6346180Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0274113U (en) * | 1988-11-29 | 1990-06-06 | ||
| JP2006247811A (en) * | 2005-03-14 | 2006-09-21 | Tabuchi Corp | Water pipe perforation cutter |
-
1984
- 1984-12-13 JP JP18971784U patent/JPS6346180Y2/ja not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0274113U (en) * | 1988-11-29 | 1990-06-06 | ||
| JP2006247811A (en) * | 2005-03-14 | 2006-09-21 | Tabuchi Corp | Water pipe perforation cutter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6346180Y2 (en) | 1988-12-01 |