JPS62147414U - - Google Patents
Info
- Publication number
- JPS62147414U JPS62147414U JP3547786U JP3547786U JPS62147414U JP S62147414 U JPS62147414 U JP S62147414U JP 3547786 U JP3547786 U JP 3547786U JP 3547786 U JP3547786 U JP 3547786U JP S62147414 U JPS62147414 U JP S62147414U
- Authority
- JP
- Japan
- Prior art keywords
- drill
- drill body
- end side
- margin portion
- twist
- 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
Landscapes
- Drilling Tools (AREA)
Description
第１図ないし第６図は本考案の一実施例を示す
図であつて、第１図はツイストドリルを示す側面
図、第２図は第１図に示すマージン部の展開図、
第３図は第１図の―線視断面図、第４図は第
１図の―線視断面図、第５図は第３図におけ
るマージン部の詳細を示す拡大図、第６図は第４
図におけるマージン部の詳細を示す拡大図である
。また、第７図ないし第１４図はそれぞれ本考案
のさらに他の実施例を示す図であつて、第７図な
いし第１２図はツイストドリルを示す側面図とそ
れぞれのツイストドリルのマージン部の展開図、
第１３図は第１１図の―線視断面図、第
１４図は第１１図の―線視断面図、第１
５図および第１６図は従来のツイストドリルの一
例を示す図であつて、第１５図はその側面図、第
１６図は第１５図の―線視断面図である
。
１……ドリル本体、４……マージン部、６……
ドリル本体、９……マージン部、１１……マージ
ン部、１２……マージン部、１４……マージン部
。
1 to 6 are views showing one embodiment of the present invention, in which FIG. 1 is a side view showing a twist drill, FIG. 2 is a developed view of the margin part shown in FIG. 1,
3 is a cross-sectional view taken along the line in FIG. 1, FIG. 4 is a cross-sectional view taken along the line shown in FIG. 4
It is an enlarged view showing the details of the margin part in the figure. Moreover, FIGS. 7 to 14 are views showing still other embodiments of the present invention, and FIGS. 7 to 12 are side views showing twist drills and development of the margin portion of each twist drill. figure,
13 is a cross-sectional view taken along the line in FIG. 11, and FIG. 14 is a cross-sectional view taken along the line shown in FIG.
5 and 16 are views showing an example of a conventional twist drill, in which FIG. 15 is a side view thereof, and FIG. 16 is a sectional view taken along the line -- in FIG. 15. 1...Drill body, 4...Margin part, 6...
Drill body, 9...margin part, 11...margin part, 12...margin part, 14...margin part.
Claims (1)
に、ドリル本体の外周部にマージン部が設けられ
てなるツイストドリルにおいて、前記マージン部
の幅を前記ドリル本体の先端側よりも後端側の方
が広くなるように設定してなることを特徴とする
ツイストドリル。 In a twist drill in which the drill body is provided with a back taper and a margin portion is provided on the outer periphery of the drill body, the width of the margin portion is made wider on the rear end side of the drill body than on the front end side. A twist drill that can be set and turned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3547786U JPS62147414U (en) | 1986-03-12 | 1986-03-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3547786U JPS62147414U (en) | 1986-03-12 | 1986-03-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62147414U true JPS62147414U (en) | 1987-09-17 |
Family
ID=30845008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3547786U Pending JPS62147414U (en) | 1986-03-12 | 1986-03-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62147414U (en) |
-
1986
- 1986-03-12 JP JP3547786U patent/JPS62147414U/ja active Pending