JPS55106710A - Drill - Google Patents
DrillInfo
- Publication number
- JPS55106710A JPS55106710A JP1108879A JP1108879A JPS55106710A JP S55106710 A JPS55106710 A JP S55106710A JP 1108879 A JP1108879 A JP 1108879A JP 1108879 A JP1108879 A JP 1108879A JP S55106710 A JPS55106710 A JP S55106710A
- Authority
- JP
- Japan
- Prior art keywords
- drill
- twist
- shank
- chips
- twist 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.)
- Granted
Links
Landscapes
- Drilling Tools (AREA)
Abstract
PURPOSE: To improve the finish of drilled hole by increasing the depth of the twist groove of a twist drill toward the shank to provide smooth elimination of chips.
CONSTITUTION: The twist groove 2 of a drill 2 having cutting edges 3 is formed so that the depth increases while the width decreases toward the shank. This construction of the twist groove 2 applies extremely small frictional resistance to chips which are twisted along the curve 40 while they are eliminated.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1108879A JPS55106710A (en) | 1979-02-01 | 1979-02-01 | Drill |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1108879A JPS55106710A (en) | 1979-02-01 | 1979-02-01 | Drill |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55106710A true JPS55106710A (en) | 1980-08-15 |
JPS6158245B2 JPS6158245B2 (en) | 1986-12-10 |
Family
ID=11768221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1108879A Granted JPS55106710A (en) | 1979-02-01 | 1979-02-01 | Drill |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55106710A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4722644A (en) * | 1985-03-08 | 1988-02-02 | Hawera Prazisionswerkzeuge Gmbh | Multi-lip drill |
US5312209A (en) * | 1991-12-16 | 1994-05-17 | Sandvik, Ab | Drill |
US7201543B2 (en) * | 2000-06-02 | 2007-04-10 | Kennametal Inc. | Twist drill and method for producing a twist drill which method includes forming a flute of a twist drill |
US9199315B2 (en) | 2000-06-02 | 2015-12-01 | Kennametal Inc. | Twist drill and method for producing a twist drill which method includes forming a flute of a twist drill |
-
1979
- 1979-02-01 JP JP1108879A patent/JPS55106710A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4722644A (en) * | 1985-03-08 | 1988-02-02 | Hawera Prazisionswerkzeuge Gmbh | Multi-lip drill |
US5312209A (en) * | 1991-12-16 | 1994-05-17 | Sandvik, Ab | Drill |
US7201543B2 (en) * | 2000-06-02 | 2007-04-10 | Kennametal Inc. | Twist drill and method for producing a twist drill which method includes forming a flute of a twist drill |
US9199315B2 (en) | 2000-06-02 | 2015-12-01 | Kennametal Inc. | Twist drill and method for producing a twist drill which method includes forming a flute of a twist drill |
Also Published As
Publication number | Publication date |
---|---|
JPS6158245B2 (en) | 1986-12-10 |
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