JPS5695532A - Controlling system of electrically driven tool for tapping - Google Patents
Controlling system of electrically driven tool for tappingInfo
- Publication number
- JPS5695532A JPS5695532A JP17027779A JP17027779A JPS5695532A JP S5695532 A JPS5695532 A JP S5695532A JP 17027779 A JP17027779 A JP 17027779A JP 17027779 A JP17027779 A JP 17027779A JP S5695532 A JPS5695532 A JP S5695532A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- tapping
- electrically driven
- main switch
- breakdown
- 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
Abstract
PURPOSE: To previously prevent a tapping drill and a screw groove from damage or breakdown by a method wherein a motor is reversely turned for a given time at the point a complete screw cutting is performed during a screw cutting working, and a tapping drill is automatically made to return from a screw cutting hole part.
CONSTITUTION: When a tapping operation is performed while a main switch S1 of the tapping electrically driven tool is disconnected, if the main switch S1 is connected to a (b) contact side, an electrically driven motor M is turned forwardly and if the main switch S1 is disconnected from the (b) contact, the conduction to the motor M is interrupted and at the same time the terminals T1, T2 are short-circuited and an electrical loop is formed between armatures of the motor M and then, a so-called dynamic braking is performed to momentarily stop the operation. Further, the motor M is reversely turned immediately by means of a switching of a polarity change-over switch S5. The reverse rotation of the motor M is continued for a given time and then, it is stopped. With this, the tapping drill and the screw groove are prevented previously from damage or breakdown.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17027779A JPS5695532A (en) | 1979-12-28 | 1979-12-28 | Controlling system of electrically driven tool for tapping |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17027779A JPS5695532A (en) | 1979-12-28 | 1979-12-28 | Controlling system of electrically driven tool for tapping |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5695532A true JPS5695532A (en) | 1981-08-03 |
JPH0123252B2 JPH0123252B2 (en) | 1989-05-01 |
Family
ID=15901957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17027779A Granted JPS5695532A (en) | 1979-12-28 | 1979-12-28 | Controlling system of electrically driven tool for tapping |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5695532A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52142298U (en) * | 1976-04-23 | 1977-10-28 | ||
JPS5479416A (en) * | 1977-12-08 | 1979-06-25 | Katsuyuki Totsu | Control system for clutch power rotary tool |
-
1979
- 1979-12-28 JP JP17027779A patent/JPS5695532A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52142298U (en) * | 1976-04-23 | 1977-10-28 | ||
JPS5479416A (en) * | 1977-12-08 | 1979-06-25 | Katsuyuki Totsu | Control system for clutch power rotary tool |
Also Published As
Publication number | Publication date |
---|---|
JPH0123252B2 (en) | 1989-05-01 |
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