CN201105351Y - Molybdenum wire break braking device for linear cutting machine - Google Patents
Molybdenum wire break braking device for linear cutting machine Download PDFInfo
- Publication number
- CN201105351Y CN201105351Y CNU2007201136555U CN200720113655U CN201105351Y CN 201105351 Y CN201105351 Y CN 201105351Y CN U2007201136555 U CNU2007201136555 U CN U2007201136555U CN 200720113655 U CN200720113655 U CN 200720113655U CN 201105351 Y CN201105351 Y CN 201105351Y
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- CN
- China
- Prior art keywords
- motor
- cutting machine
- relay
- molybdenum wire
- circuit
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a linear cutting machine tool brake device when molybdenum wire is broken, belonging to the technical field of motor brake devices, which is characterized in that the linear cutting machine tool molybdenum wire breaking detection circuit comprises a current transformer, a time-base circuit and a relay. A live wire of the motor ac power supply goes through the current transformer which is connected with the rectification voltage-stabilizing circuit, which is connected with the time-base circuit. The output end of the time-base circuit is connected with the relay coil. One end of the relay normal open contact is connected with the cathode of the power supply while the other end is connected with the input end of the single-chip microcomputer. The output end of the single-chip microcomputer is connected with the motor brake circuit. The motor brake circuit comprises a switch tube and a relay, the normal open contact of which is connected in series with the live wires of a set of direct current power supplies and a set of motor ac power supplies. The linear cutting machine tool brake device has the advantages that through the detection of the molybdenum wire breaking detection circuit on the molybdenum wire motor operation current, the real-time start of the molybdenum wire breaking motor brake can be realized when molybdenum wire is broken, so as to brake the motor fast and protect the molybdenum wire from being affected.
Description
Technical field
The utility model relates to a kind of dynamic braking device, the dynamic braking device during particularly a kind of wire cutting machine tool molybdenum filament fracture of wire.
Background technology
Detection when the prior art wire cutting machine tool does not have the molybdenum filament fracture of wire and dynamic braking device, when causing the molybdenum filament fracture of wire, the continuation high speed rotating of motor causes a large amount of wastes of molybdenum filament.
Summary of the invention
The purpose of this utility model provides a kind of wire cutting machine tool molybdenum filament fracture of wire brake apparatus.
The technical scheme that its technical problem that solves the utility model adopts is: this device comprises motor braking circuits; It is characterized in that having wire cutting machine tool molybdenum filament fracture of wire testing circuit, wire cutting machine tool molybdenum filament fracture of wire testing circuit is by current transformer, time base circuit and relay are formed, a phase line of AC power of motor is passed current transformer, current transformer is connected with regulator rectifier circuit, regulator rectifier circuit is connected with time base circuit, the time base circuit output is connected with relay coil, one end of relay normally open contact is connected with positive source, the other end is connected with the single-chip microcomputer input, the single-chip microcomputer output is connected with motor braking circuits, motor braking circuits comprises switching tube and relay, and relay normally open contact is connected in series mutually with the phase line of one group of dc source and one group of AC power of motor.
The beneficial effects of the utility model are by the detection of the disconnected testing circuit of molybdenum filament to molybdenum filament operation motor operating current, when the molybdenum filament fracture of wire, can start molybdenum filament operation motor braking circuits in real time, the rotation of fast braking motor, and the protection molybdenum filament is unaffected.The utility model can be applicable to all kinds of wire cutting machine tools.
Description of drawings
The utility model is described in further detail below by accompanying drawing.
Accompanying drawing 1 is an electrical schematic diagram of the present utility model.
The specific embodiment
Consult Fig. 1.Single-chip microcomputer is the PIC12C508 8-bit microcontroller of U.S. Microchip company among the figure.
The disconnected testing circuit of wire cutting machine tool molybdenum filament is by current transformer LT, time base circuit NE555 and relay J are formed, arbitrary phase line of AC power of motor passed current transformer LT, current transformer LT is connected with regulator rectifier circuit, regulator rectifier circuit is connected with time base circuit NE555 input, time base circuit NE555 output is connected with the relay J coil, one end of relay J normally opened contact is connected with positive source (+), the other end is connected with single-chip microcomputer PIC12C508 input I/O (1), single-chip microcomputer PIC12C508 output I/O (2) is connected with the motor D braking circuit, motor braking circuits comprises switching tube VT2 and relay J, and the relay J normally opened contact is connected in series mutually with any one group of phase line of the communication power supply of one group of dc source (+) and one group of motor D.
The running current of wire cutting machine tool molybdenum filament operation motor when normally moving with the molybdenum filament fracture of wire is different, the wire cutting machine tool testing circuit is by the detection to molybdenum filament operation motor operating current, when the molybdenum filament fracture of wire, start molybdenum filament operation motor braking circuits, the rotation of fast braking motor in real time by the monolithic function.
Claims (1)
1, a kind of wire cutting machine tool molybdenum filament fracture of wire brake apparatus comprises motor braking circuits; It is characterized in that having wire cutting machine tool molybdenum filament fracture of wire testing circuit, wire cutting machine tool molybdenum filament fracture of wire testing circuit is by current transformer, time base circuit and relay are formed, a phase line of AC power of motor is passed current transformer, current transformer is connected with regulator rectifier circuit, regulator rectifier circuit is connected with time base circuit, the time base circuit output is connected with relay coil, one end of relay normally open contact is connected with positive source, the other end is connected with the single-chip microcomputer input, the single-chip microcomputer output is connected with motor braking circuits, motor braking circuits comprises switching tube and relay, and relay normally open contact is connected in series mutually with the phase line of one group of dc source and one group of AC power of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201136555U CN201105351Y (en) | 2007-08-23 | 2007-08-23 | Molybdenum wire break braking device for linear cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201136555U CN201105351Y (en) | 2007-08-23 | 2007-08-23 | Molybdenum wire break braking device for linear cutting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201105351Y true CN201105351Y (en) | 2008-08-27 |
Family
ID=39957142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201136555U Expired - Fee Related CN201105351Y (en) | 2007-08-23 | 2007-08-23 | Molybdenum wire break braking device for linear cutting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201105351Y (en) |
-
2007
- 2007-08-23 CN CNU2007201136555U patent/CN201105351Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080827 |