CN201067823Y - Wire cutting machine tool molybdenum filament break brake device - Google Patents
Wire cutting machine tool molybdenum filament break brake device Download PDFInfo
- Publication number
- CN201067823Y CN201067823Y CNU2007201134297U CN200720113429U CN201067823Y CN 201067823 Y CN201067823 Y CN 201067823Y CN U2007201134297 U CNU2007201134297 U CN U2007201134297U CN 200720113429 U CN200720113429 U CN 200720113429U CN 201067823 Y CN201067823 Y CN 201067823Y
- Authority
- CN
- China
- Prior art keywords
- motor
- wire
- cutting machine
- molybdenum filament
- machine tool
- 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 broken wire braking device for the molybdenum wire of a linear cutting machine which relates to a motor braking device, in particular to a motor braking device which is used when the molybdenum wire of a linear cutting machine is broken up. The utility model is characterized by having a wire broken detection circuitry which consists of a current transformer and a operational circuit; wherein, the operational circuit is connected with the input end of a singlechip and the output end of the singlechip is connected with a motor braking circuit which comprises a switch tube and a relay with a normally open contact being connected in series with the phase lines of a group of direct current supply and a group of motor alternating current supply. The utility model detects the running current of molybdenum wire operation motor by a molybdenum wire breaking detection circuitry, therefore, when the molybdenum wire is broken, the molybdenum wire can be timely started to start the motor braking circuit and fast brake the rotation of the motor, thus protecting the molybdenum wire from being affected. The utility model can be applied to various linear cutting machines.
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 made up of current transformer and discharge circuit, a phase line of AC power of motor is passed the current transformer primary coil, the current transformer secondary coil is connected with regulator rectifier circuit, regulator rectifier circuit is connected with discharge circuit, the discharge circuit output 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 made up of current transformer LT and discharge circuit AJ, arbitrary phase line of AC power of motor passed current transformer LT primary coil, current transformer LT secondary coil is connected with regulator rectifier circuit, regulator rectifier circuit is connected with discharge circuit AJ, discharge circuit AJ output is connected with single-chip microcomputer PIC12C508 input I/O (1) input, single-chip microcomputer PIC12C508 output I/O (2) is connected with the motor D braking circuit, motor braking circuits comprises switching tube G 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 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 made up of current transformer and discharge circuit, a phase line of AC power of motor is passed the current transformer primary coil, the current transformer secondary coil is connected with regulator rectifier circuit, regulator rectifier circuit is connected with discharge circuit, the discharge circuit output 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 |
|---|---|---|---|
| CNU2007201134297U CN201067823Y (en) | 2007-08-20 | 2007-08-20 | Wire cutting machine tool molybdenum filament break brake device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201134297U CN201067823Y (en) | 2007-08-20 | 2007-08-20 | Wire cutting machine tool molybdenum filament break brake device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201067823Y true CN201067823Y (en) | 2008-06-04 |
Family
ID=39489195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201134297U Expired - Fee Related CN201067823Y (en) | 2007-08-20 | 2007-08-20 | Wire cutting machine tool molybdenum filament break brake device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201067823Y (en) |
-
2007
- 2007-08-20 CN CNU2007201134297U patent/CN201067823Y/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: 20080604 Termination date: 20090921 |