JPS6416324A - Wire electric discharge machine - Google Patents
Wire electric discharge machineInfo
- Publication number
- JPS6416324A JPS6416324A JP17001887A JP17001887A JPS6416324A JP S6416324 A JPS6416324 A JP S6416324A JP 17001887 A JP17001887 A JP 17001887A JP 17001887 A JP17001887 A JP 17001887A JP S6416324 A JPS6416324 A JP S6416324A
- Authority
- JP
- Japan
- Prior art keywords
- wire electrode
- motor
- wire
- trouble
- pretension
- 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
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
PURPOSE:To prevent the slip-off of a wire electrode by installing a brake circuit for break-stopping a motor for pretension which pretension-controls the wire electrode on the basis of the detection signal of a wire disconnection detecting circuit and preventing the revolution due to the inertia of a wire feeding bobbin during disconnection trouble. CONSTITUTION:When the disconnection trouble of a wire electrode is generated during the cutting work, a contactor and the wire electrode are separated, and the electric current supplied from a power source voltage stops to flow in a cpupler. There fore, a photocoupler is switched-OFF, and a relay driver operates, and electric current flows in the coil of the relay, and the contact points 33-36 of a brake circuit 40 act, and a dc power source 37 is connected in series with a motor 13 for pretension, and the motor 13 is applied with break. Therefore, the revolution due to the inertia of a wire feeding bobbin connected with the motor 13 is prevented, and when the disconnection trouble of the wire electrode is generated, the slip-off trouble generated between the bobbin and a main tension pulley is prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17001887A JPS6416324A (en) | 1987-07-08 | 1987-07-08 | Wire electric discharge machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17001887A JPS6416324A (en) | 1987-07-08 | 1987-07-08 | Wire electric discharge machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6416324A true JPS6416324A (en) | 1989-01-19 |
Family
ID=15897072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17001887A Pending JPS6416324A (en) | 1987-07-08 | 1987-07-08 | Wire electric discharge machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6416324A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5809986A (en) * | 1995-09-08 | 1998-09-22 | Tokyo Seimitsu Co., Ltd. | Wire derailment detecting apparatus for wire saw |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6017653A (en) * | 1983-07-12 | 1985-01-29 | Hitachi Metals Ltd | Grille for free access floor and manufacture thereof |
-
1987
- 1987-07-08 JP JP17001887A patent/JPS6416324A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6017653A (en) * | 1983-07-12 | 1985-01-29 | Hitachi Metals Ltd | Grille for free access floor and manufacture thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5809986A (en) * | 1995-09-08 | 1998-09-22 | Tokyo Seimitsu Co., Ltd. | Wire derailment detecting apparatus for wire saw |
| US5908025A (en) * | 1995-09-08 | 1999-06-01 | Tokyo Seimitsu Co., Ltd. | Wire derailment detecting apparatus of wire saw |
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