JPH01129012U - - Google Patents
Info
- Publication number
- JPH01129012U JPH01129012U JP2377388U JP2377388U JPH01129012U JP H01129012 U JPH01129012 U JP H01129012U JP 2377388 U JP2377388 U JP 2377388U JP 2377388 U JP2377388 U JP 2377388U JP H01129012 U JPH01129012 U JP H01129012U
- Authority
- JP
- Japan
- Prior art keywords
- carbide
- tip
- steel shank
- shank part
- groove
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000005219 brazing Methods 0.000 claims 1
Landscapes
- Drilling Tools (AREA)
Description
第１〜４図はこの考案の１実施例の態様図であ
り、第１図は全体概略側面図、第２，３図は第１
図―，―断面図、第４図は先端正面視図
、第５図以下は在来態様のドリルの態様図であり
、第５図はねじれ溝に沿う縦断面図、第６図は第
５図―断面図、第７図は先端正面視図である
。
２′……鋼製シヤンク部、４′……超硬チツプ
、５′……接合部、７……ねじれ溝、９……ウエ
ブテーパ、１′……ドリル、Ｗ，Ｗ′……溝幅比
。
Figures 1 to 4 are views of one embodiment of this invention, with Figure 1 being an overall schematic side view, and Figures 2 and 3 being the first embodiment.
Figure 4 is a front view of the tip, Figure 5 and the following are views of conventional drills, Figure 5 is a longitudinal cross-sectional view along the helical groove, and Figure 6 is a front view of the tip. FIG. 7 is a front view of the tip. 2'...Steel shank part, 4'...Carbide chip, 5'...Joint part, 7...Twisted groove, 9...Web taper, 1'...Drill, W, W'...Groove width ratio .
Claims (1)
介して一体的に設けられ、該超硬チツプから鋼製
シヤンク部に亘りねじれ溝がウエブテーパの外側
に形成されている超硬先むくタイプのドリル構造
において、該超硬チツプの溝幅比が０．８〜１．
１：１にされ、鋼製シヤンク部の超硬チツプとの
接合部の溝幅比は該超硬チツプのそれと同一でね
じれ溝切上り部のそれが１．２以上：１に形成さ
れていることを特徴とするドリル構造。 A carbide tip is integrally provided at the tip of the steel shank part via brazing, and a twisted groove is formed on the outside of the web taper from the carbide chip to the steel shank part. In the drill structure, the groove width ratio of the carbide tip is 0.8 to 1.
The groove width ratio of the joint part of the steel shank part with the carbide chip is the same as that of the carbide chip, and that of the helical groove cut upward part is 1.2:1 or more. A drill structure characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2377388U JPH01129012U (en) | 1988-02-26 | 1988-02-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2377388U JPH01129012U (en) | 1988-02-26 | 1988-02-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01129012U true JPH01129012U (en) | 1989-09-04 |
Family
ID=31243045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2377388U Pending JPH01129012U (en) | 1988-02-26 | 1988-02-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01129012U (en) |
-
1988
- 1988-02-26 JP JP2377388U patent/JPH01129012U/ja active Pending