JPS627312U - - Google Patents

Info

Publication number
JPS627312U
JPS627312U JP9619485U JP9619485U JPS627312U JP S627312 U JPS627312 U JP S627312U JP 9619485 U JP9619485 U JP 9619485U JP 9619485 U JP9619485 U JP 9619485U JP S627312 U JPS627312 U JP S627312U
Authority
JP
Japan
Prior art keywords
drill
blade body
tip
cutting edge
outer corner
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
Application number
JP9619485U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP9619485U priority Critical patent/JPS627312U/ja
Publication of JPS627312U publication Critical patent/JPS627312U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Drilling Tools (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本考案によるドリルの具体的な実施構
造の一例を示す正面図、第2図はドリルの先端部
を下方から見た底面図、第3図は切削加工時に於
ける本考案のドリルと被削材との関係を示す正面
図、第4図及び第5図は同じく従来のドリルと被
削材との関係を示す正面図、第6図は従来のドリ
ルで穿孔した時に孔の周縁部にできるバリの形状
を示す斜視図である。 D,D,D……ドリル、d,d,d
…刃先、H……孔、H……バリ、H……抜屑
、1……本体、1a,1b……刃部、2a,2b
……捩れ溝、3a,3b……ランド面、4a,4
b……切れ刃、5a,5b……外周コーナー部、
6a,6b……中間部、7a,7b……内周端部
、8……チーゼルエツジ、M……押出形材。
Figure 1 is a front view showing an example of a specific implementation structure of the drill according to the present invention, Figure 2 is a bottom view of the tip of the drill seen from below, and Figure 3 is the drill according to the present invention during cutting. Figures 4 and 5 are front views showing the relationship between the conventional drill and the workpiece, and Figure 6 shows the periphery of the hole when drilling with a conventional drill. FIG. D, D 1 , D 2 ... drill, d, d 1 , d 2 ...
...Blade tip, H...hole, H1 ...burr, H2 ...swarf, 1...body, 1a, 1b...blade, 2a, 2b
...Twisted groove, 3a, 3b...Land surface, 4a, 4
b...Cutting edge, 5a, 5b...Outer corner corner,
6a, 6b...middle part, 7a, 7b...inner peripheral end part, 8...chisel edge, M...extruded shape member.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ドリルDの本体1外周面に対称的に刻設された
二条の捩れ溝2a,2bのうち、一方の捩れ溝2
aの先端に切れ刃4aの形状を通常の標準ドリル
と同形に形成した直線状の第1刃体Bを設け、
他方の捩れ溝2bの先端に切れ刃4bの外周コー
ナー部5bが前記第1刃体Bの外周コーナー部
5aよりもやゝ高く且つ中間部6bが低く内周端
部7bが中心部のチーゼルエツジ8に連続する弧
状の第2刃体Bを設けたことを特徴とするドリ
ル。
One of the two torsion grooves 2a and 2b symmetrically carved on the outer peripheral surface of the main body 1 of the drill D.
A linear first blade body B1 is provided at the tip of the cutting edge 4a having the same shape as a normal standard drill,
At the tip of the other helical groove 2b, the outer corner 5b of the cutting edge 4b is slightly higher than the outer corner 5a of the first blade body B1 , and the intermediate part 6b is lower and the inner end 7b is a chisel edge at the center. 8. A drill characterized in that a second arc-shaped blade body B2 is provided.
JP9619485U 1985-06-25 1985-06-25 Pending JPS627312U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9619485U JPS627312U (en) 1985-06-25 1985-06-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9619485U JPS627312U (en) 1985-06-25 1985-06-25

Publications (1)

Publication Number Publication Date
JPS627312U true JPS627312U (en) 1987-01-17

Family

ID=30961666

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9619485U Pending JPS627312U (en) 1985-06-25 1985-06-25

Country Status (1)

Country Link
JP (1) JPS627312U (en)

Similar Documents

Publication Publication Date Title
JPS627312U (en)
JPH01125110U (en)
JPS59140116U (en) Twist drill with guide part
JPS59171010U (en) carbide drill
JPH0340017U (en)
JPS60165585U (en) drill bit
JPS6016U (en) Drill
JPS6281509U (en)
JPS60142011U (en) Drill
JPS61148513U (en)
JPS6330402U (en)
JPS5844128U (en) Throw-away type beveling cutter
JPH0263911U (en)
JPH01114216U (en)
JPS60194410U (en) double-blade drill
JPS62184908U (en)
JPH0375922U (en)
JPS61200207U (en)
JPH02106090U (en)
JPS59107202U (en) bit
JPS5889217U (en) Deep hole drilling tool with chip discharge groove
JPS59143613U (en) Drill
JPS6171312U (en)
JPS60153711U (en) hole machining tool
JPS6261411U (en)