JPH0278688U - - Google Patents
Info
- Publication number
- JPH0278688U JPH0278688U JP15533088U JP15533088U JPH0278688U JP H0278688 U JPH0278688 U JP H0278688U JP 15533088 U JP15533088 U JP 15533088U JP 15533088 U JP15533088 U JP 15533088U JP H0278688 U JPH0278688 U JP H0278688U
- Authority
- JP
- Japan
- Prior art keywords
- blade
- base metal
- width
- forward direction
- embedded
- 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
- 239000010953 base metal Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 2
- 238000009412 basement excavation Methods 0.000 claims 1
- 238000005219 brazing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Description
第１図は、この考案の掘削刃の要部を示す側面
図、第２図はその回転方向前方視図、第３図は押
し込み方向前方視図、第４図ａ，ａ′，ｂ，ｂ′
はこの考案の掘削刃と従来ビツトの作用説明のた
めの比較図、第５図はこの考案の掘削刃の使用の
一例を示す図、第６図ａは他の使用例を示す側面
図、同図ｂはａ図のＺ―Ｚ線に添つた断面図、第
７図乃至第９図はいずれも従来ビツトの一例を示
す斜視図である。
１……掘削刃、２……台金、３……超硬合金チ
ツプ、４……刃部、５……鑞付け部、６……超硬
板。
Fig. 1 is a side view showing the main parts of the digging blade of this invention, Fig. 2 is a front view in the rotating direction, Fig. 3 is a front view in the pushing direction, and Figs. 4 a, a', b, b. ′
Figure 5 is a diagram showing an example of the use of the digging blade of this invention, and Figure 6a is a side view showing another example of its use. FIG. b is a sectional view taken along the line Z--Z in FIG. a, and FIGS. 7 to 9 are perspective views showing examples of conventional bits. 1...Drilling blade, 2...Base metal, 3...Cemented carbide chip, 4...Blade section, 5...Brazing section, 6...Cemented carbide plate.
補正 平１．３．３
図面の簡単な説明を次のように補正する。
明細書第１１頁１４行目〜１６行目の「第４図
…比較図」を下記に補正します。「第４図ａはこ
の考案のビツトの作用説明用側面図、同図ｂは従
来ビツトの作用をａ図と比較して示す側面図、同
図ｃはこの考案のビツトの作用説明用斜視図、同
図ｄはｃ図に対応させた従来ビツトの作用説明用
斜視図」Amendment 1.3.3 The brief description of the drawing is amended as follows. "Figure 4... Comparison chart" on page 11, lines 14 to 16 of the specification has been corrected as follows. ``Figure 4a is a side view for explaining the operation of the bit of this invention, Figure 4b is a side view showing the operation of the conventional bit in comparison with Figure A, and Figure 4c is a perspective view for explaining the operation of the bit of this invention. , Figure d is a perspective view for explaining the operation of the conventional bit corresponding to figure c.
Claims (1)
部が回転方向前方視及び押込み方向前方視におい
て共に山形形状をなし、その刃部のすくい角θ＝
０〜−３０°、逃げ角γ＝１０〜２０°、２方向
から見た上記山形形状部の山の角度ｙ１，ｙ２は
共に１６０〜９０°であり、さらに、刃部の切つ
先は、台金に挾着状態に埋込んだ刃幅Ａが台金刃
幅Ｂよりも狭くて回転方向埋込み深さＣが刃幅Ａ
の１．５倍以上ある超硬合金チツプで形成されて
いることを特徴とする掘削刃。 An excavation blade used in a rotary foundation excavator, in which the blade part has a chevron shape both in the forward direction of rotation and in the forward direction of pushing, and the rake angle θ of the blade part is
0 to -30°, clearance angle γ = 10 to 20°, angles y 1 and y 2 of the chevron-shaped portion viewed from two directions are both 160 to 90°, and the cutting tip of the blade In this case, the blade width A embedded in the base metal in a clamped state is narrower than the base metal blade width B, and the embedded depth C in the rotational direction is the blade width A.
A drilling blade characterized by being formed of a cemented carbide chip with a hardness of 1.5 times or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15533088U JPH0278688U (en) | 1988-11-28 | 1988-11-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15533088U JPH0278688U (en) | 1988-11-28 | 1988-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0278688U true JPH0278688U (en) | 1990-06-18 |
Family
ID=31432863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15533088U Pending JPH0278688U (en) | 1988-11-28 | 1988-11-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0278688U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012041674A (en) * | 2010-08-12 | 2012-03-01 | Nippon Beesu Kk | Destruction device and destruction and discharge device of precast end-plated concrete hollow pile |
| JP2019051678A (en) * | 2017-09-19 | 2019-04-04 | 住友金属鉱山シポレックス株式会社 | Rotary blade cutting device and processing method of cutting light-weight aerated concrete panel |
-
1988
- 1988-11-28 JP JP15533088U patent/JPH0278688U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012041674A (en) * | 2010-08-12 | 2012-03-01 | Nippon Beesu Kk | Destruction device and destruction and discharge device of precast end-plated concrete hollow pile |
| JP2019051678A (en) * | 2017-09-19 | 2019-04-04 | 住友金属鉱山シポレックス株式会社 | Rotary blade cutting device and processing method of cutting light-weight aerated concrete panel |
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