JPS5440374A - Prevention of wrong operation of numerical-controlled machine tool - Google Patents
Prevention of wrong operation of numerical-controlled machine toolInfo
- Publication number
- JPS5440374A JPS5440374A JP10642077A JP10642077A JPS5440374A JP S5440374 A JPS5440374 A JP S5440374A JP 10642077 A JP10642077 A JP 10642077A JP 10642077 A JP10642077 A JP 10642077A JP S5440374 A JPS5440374 A JP S5440374A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- machine tool
- absolute
- prevention
- abnormality
- 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
- Automatic Control Of Machine Tools (AREA)
- Numerical Control (AREA)
Abstract
PURPOSE: To stop a machine tool by comparing the integrated value of output of an incremental position detector with the absolute position detected by an absolute position detector and producing an abnormality signal when the difference between said integrated value and said absolute position exceeds a predetermined level.
CONSTITUTION: In a control circuit for prevention of worng operation, a position command generator 1 generates a command position signal OS indicative of command position and the signal is applied to a controller 2. Another signal IS is also applied to the controller 2 from the incremental position detector 5 for detecting the displacement of a moving table 7. A signal DC for driving a motor 3 is produced depending on these signals IS, OS. An abnormality discriminator 9 compares the table position detected by an absolute signal with the table position detected by the signal IS, and generates the abnormality signal when the difference between both the table positions exceeds the predetermined level, thereby stopping the machine tool
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10642077A JPS5440374A (en) | 1977-09-05 | 1977-09-05 | Prevention of wrong operation of numerical-controlled machine tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10642077A JPS5440374A (en) | 1977-09-05 | 1977-09-05 | Prevention of wrong operation of numerical-controlled machine tool |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5440374A true JPS5440374A (en) | 1979-03-29 |
Family
ID=14433164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10642077A Pending JPS5440374A (en) | 1977-09-05 | 1977-09-05 | Prevention of wrong operation of numerical-controlled machine tool |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5440374A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57143615A (en) * | 1981-03-02 | 1982-09-04 | Sanesu Shoko:Kk | Positioning control method |
JPS59169751A (en) * | 1983-03-16 | 1984-09-25 | Nakamuratome Seimitsu Kogyo Kk | Sliding table abnormality monitoring device |
JPS59226801A (en) * | 1983-06-08 | 1984-12-20 | Matsushita Electric Ind Co Ltd | Position detector |
US4725959A (en) * | 1985-03-30 | 1988-02-16 | Fanuc Ltd. | Numerically controlled machine tool |
JPH03100411A (en) * | 1989-09-14 | 1991-04-25 | Brother Ind Ltd | Abnormality deciding device of position detector |
US6666789B2 (en) | 2000-11-15 | 2003-12-23 | Hyundai Motor Company | Frictional variable transmission for vehicle |
JP2006242599A (en) * | 2005-02-28 | 2006-09-14 | Okuma Corp | Linear encoder |
-
1977
- 1977-09-05 JP JP10642077A patent/JPS5440374A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57143615A (en) * | 1981-03-02 | 1982-09-04 | Sanesu Shoko:Kk | Positioning control method |
JPS59169751A (en) * | 1983-03-16 | 1984-09-25 | Nakamuratome Seimitsu Kogyo Kk | Sliding table abnormality monitoring device |
JPS59226801A (en) * | 1983-06-08 | 1984-12-20 | Matsushita Electric Ind Co Ltd | Position detector |
JPH0515963B2 (en) * | 1983-06-08 | 1993-03-03 | Matsushita Electric Ind Co Ltd | |
US4725959A (en) * | 1985-03-30 | 1988-02-16 | Fanuc Ltd. | Numerically controlled machine tool |
JPH03100411A (en) * | 1989-09-14 | 1991-04-25 | Brother Ind Ltd | Abnormality deciding device of position detector |
US6666789B2 (en) | 2000-11-15 | 2003-12-23 | Hyundai Motor Company | Frictional variable transmission for vehicle |
JP2006242599A (en) * | 2005-02-28 | 2006-09-14 | Okuma Corp | Linear encoder |
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