JPH0429000U - - Google Patents
Info
- Publication number
- JPH0429000U JPH0429000U JP6794190U JP6794190U JPH0429000U JP H0429000 U JPH0429000 U JP H0429000U JP 6794190 U JP6794190 U JP 6794190U JP 6794190 U JP6794190 U JP 6794190U JP H0429000 U JPH0429000 U JP H0429000U
- Authority
- JP
- Japan
- Prior art keywords
- tip
- steel pipe
- center shaft
- support frame
- connection part
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 229920006328 Styrofoam Polymers 0.000 description 1
- 239000008261 styrofoam Substances 0.000 description 1
Description
第１図、第２図はこの考案の実施例を示し、第
１図は正面断面図、第２図は側面図、第３図はセ
ンタ軸を示す部分断面図、第４図は支持枠を示す
部分断面図、第５図は埋設された発泡スチロール
のブロツクを示す断面図である。
１……穴明け治具、２……鋼管、４……センタ
軸、６……線状発熱体、７……連結ロツト、９…
…ロツト連結部、９……電線。
Fig. 1 and Fig. 2 show an embodiment of this invention, Fig. 1 is a front sectional view, Fig. 2 is a side view, Fig. 3 is a partial sectional view showing the center axis, and Fig. 4 is a support frame. FIG. 5 is a cross-sectional view showing a buried Styrofoam block. 1... Drilling jig, 2... Steel pipe, 4... Center shaft, 6... Linear heating element, 7... Connecting rod, 9...
...Rot connection part, 9...Electric wire.
Claims (1)
部を有し、先端部が上記鋼管先端から突出して鋼
管中心線上に支持枠で固定されたセンタ軸と、 上記鋼管の内外面とセンタ軸の先端部及び支持
枠に固定された発熱体と、 上記センタ軸のロツト連結部に連結される連結
ロツトとを備えたことを特徴とする穴明け治具。[Scope of Claim for Utility Model Registration] A steel pipe having a tapered surface on the inner surface of the tip, the tip having a conical shape and a rod connection part at the rear end, and the tip protruding from the tip of the steel pipe and being on the center line of the steel pipe. A center shaft fixed to a support frame, a heating element fixed to the inner and outer surfaces of the steel pipe, the tip of the center shaft, and the support frame, and a connecting rod connected to the rod connection part of the center shaft. A drilling jig featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6794190U JPH0647679Y2 (en) | 1990-06-28 | 1990-06-28 | Drilling jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6794190U JPH0647679Y2 (en) | 1990-06-28 | 1990-06-28 | Drilling jig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0429000U true JPH0429000U (en) | 1992-03-09 |
| JPH0647679Y2 JPH0647679Y2 (en) | 1994-12-07 |
Family
ID=31601968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6794190U Expired - Lifetime JPH0647679Y2 (en) | 1990-06-28 | 1990-06-28 | Drilling jig |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0647679Y2 (en) |
-
1990
- 1990-06-28 JP JP6794190U patent/JPH0647679Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0647679Y2 (en) | 1994-12-07 |