CN2801380Y - Wire broken detection device of wire cutting machine tool - Google Patents
Wire broken detection device of wire cutting machine tool Download PDFInfo
- Publication number
- CN2801380Y CN2801380Y CN 200520100570 CN200520100570U CN2801380Y CN 2801380 Y CN2801380 Y CN 2801380Y CN 200520100570 CN200520100570 CN 200520100570 CN 200520100570 U CN200520100570 U CN 200520100570U CN 2801380 Y CN2801380 Y CN 2801380Y
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- CN
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- Prior art keywords
- wire
- molybdenum filament
- current
- motor
- molybdenum wire
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Abstract
The utility model discloses a wire broken detection device of a wire cutting machine tool, which belongs to the technical field of the single chip application. The utility model is mainly characterized in that the I/O input end of a single chip machine is connected with a molybdenum wire motor and current detecting circuit. A current transformer takes out current signals through a molybdenum wire motor power supply wire, the current signals are carried out with the half-wave rectification through a diode, are inputted to the I/O input end of the single chip machine after converted into voltage signals through a resistor, and are used for judging whether the operating current of a molybdenum wire motor is normal. When the molybdenum wire is broken, the heavy load operation of the molybdenum wire motor is changed into the light load operation, the current change generates voltage change by the resistor and the molybdenum wire broken signals are provided to the single chip machine in real time. A molybdenum wire motor direct current braking device connected with the I/O output end of the single chip machine through a switch executive circuit controls the emergency braking operation of the molybdenum wire motor, protects a molybdenum wire and sends out alarm signals. The invention creation is used for the molybdenum wire broken detection for a wire cutting machine tool.
Description
Technical field the invention relates to a kind of checkout gear, particularly a kind of circuit wire detecting device of wire cutting machine tool.
During background technology wire cutting machine tool molybdenum filament fracture of wire in service such as the molybdenum filament motor still will cause molybdenum filament impaired in a large number in operation.Before the invention applying date, do not have molybdenum filament fracture of wire single-chip microcomputer real-time detecting system as yet, can't start molybdenum filament motor emergency braking apparatus in real time and shut down, bring hidden danger for the nothing monitoring operation and the operation of wire cutting machine tool.
The purpose of summary of the invention the invention provides a kind of circuit wire detecting device of wire cutting machine tool, overcomes the shortcoming that prior art exists, and can detect the device of molybdenum filament fracture of wire by single-chip microcomputer automatically.The invention solves the technical scheme that its technical problem adopts: be connected to the molybdenum filament motor current detecting circuit at the I/O of single-chip microcomputer input; current transformer takes out current signal by the molybdenum filament motor power-supply wire; through the diode halfwave rectifier; convert the I/O input that is input to single-chip microcomputer behind the voltage signal to by resistance; in order to judge whether the molybdenum filament motor working current is normal; when the molybdenum filament fracture of wire; the molybdenum filament motor becomes light running by heavy duty; the variation of electric current produces voltage change by resistance; for single-chip microcomputer provides the molybdenum filament local flaw signal in real time; the single-chip processor i/o output is protected molybdenum filament by the brake hard of the molybdenum filament motor DC brake apparatus control molybdenum filament motor that the switch executive circuit connects, and sends alarm signal.The molybdenum filament motor current detecting circuit passes current transformer CT by the molybdenum filament motor power-supply wire, and its current signal is through diode D halfwave rectifier, by resistance R
1, R
2, R
3Convert voltage signal to, be input to the I/O input of single-chip microcomputer.The I/O output of single-chip microcomputer is connected with the base stage of switching tube, and the colelctor electrode of switching tube is connected with relay coil, and the normally opened contact of relay is connected with molybdenum filament motor DC brake apparatus.
The beneficial effect of the invention is: when the molybdenum filament fracture of wire, the molybdenum filament motor becomes light running by heavy duty, and the variation of electric current produces voltage change by resistance, for single-chip microcomputer provides the molybdenum filament local flaw signal in real time.The single-chip processor i/o output is protected molybdenum filament by the brake hard of the molybdenum filament motor DC brake apparatus control molybdenum filament motor that the switch executive circuit connects, and sends alarm signal.The molybdenum filament fracture of wire that the invention is widely used in wire cutting machine tool detects.
Description of drawings Fig. 1 is the electrical schematic diagram of the invention.CT is a current transformer among the figure, and D is a diode, R
1, R
2, R
3Be resistance, PIC16C711 is a single-chip microcomputer, and G is a switching tube, and J is a relay, and J-1 is Chang Kaiduan.
The specific embodiment is consulted Fig. 1, and the invention is given diode D halfwave rectifier by current transformer CT, by resistance R
1, R
2, R
3Convert voltage signal to, be input to single-chip processor i/o input I/O (1) single-chip processor i/o output and be connected with the base stage of switching tube G.The colelctor electrode of switching tube G is connected with the relay J coil.The normally opened contact J-1 of relay J is connected with molybdenum filament motor DC emergency braking apparatus.The motor DC emergency braking apparatus is a prior art.
Claims (3)
1; a kind of circuit wire detecting device of wire cutting machine tool; its principal character is to be connected to the molybdenum filament motor current detecting circuit at the I/O of single-chip microcomputer input; current transformer takes out current signal by the molybdenum filament motor power-supply wire; through the diode halfwave rectifier; convert the I/O input that is input to single-chip microcomputer behind the voltage signal to by resistance; in order to judge whether the molybdenum filament motor working current is normal; when the molybdenum filament fracture of wire; the molybdenum filament motor becomes light running by heavy duty; the variation of electric current produces voltage change by resistance; for single-chip microcomputer provides the molybdenum filament local flaw signal in real time; the single-chip processor i/o output is protected molybdenum filament by the brake hard of the molybdenum filament motor DC brake apparatus control molybdenum filament motor that the switch executive circuit connects, and sends alarm signal.
2, the circuit wire detecting device of wire cutting machine tool according to claim 1 is characterized in that the molybdenum filament motor current detecting circuit passes current transformer CT by the molybdenum filament motor power-supply wire, and its current signal is through diode D halfwave rectifier, by resistance R
1, R
2, R
3Convert voltage signal to, be input to the I/O input of single-chip microcomputer.
3, the circuit wire detecting device of wire cutting machine tool according to claim 1, the I/O output that it is characterized in that single-chip microcomputer is connected with the base stage of switching tube, the colelctor electrode of switching tube is connected with relay coil, and the normally opened contact of relay is connected with molybdenum filament motor DC brake apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520100570 CN2801380Y (en) | 2005-02-06 | 2005-02-06 | Wire broken detection device of wire cutting machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520100570 CN2801380Y (en) | 2005-02-06 | 2005-02-06 | Wire broken detection device of wire cutting machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2801380Y true CN2801380Y (en) | 2006-08-02 |
Family
ID=36846085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520100570 Expired - Lifetime CN2801380Y (en) | 2005-02-06 | 2005-02-06 | Wire broken detection device of wire cutting machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2801380Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100366382C (en) * | 2005-02-06 | 2008-02-06 | 谭启仁 | Wire broken detecting device for wire cutting mechine-tool |
| CN102169335A (en) * | 2011-04-29 | 2011-08-31 | 刘雨兰 | Dynamic precision detection method for wire conveying system of wire cutting machine tool |
| CN115297984A (en) * | 2020-03-18 | 2022-11-04 | 三菱电机株式会社 | Multi-wire electric discharge machine and multi-wire electric discharge machining system |
-
2005
- 2005-02-06 CN CN 200520100570 patent/CN2801380Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100366382C (en) * | 2005-02-06 | 2008-02-06 | 谭启仁 | Wire broken detecting device for wire cutting mechine-tool |
| CN102169335A (en) * | 2011-04-29 | 2011-08-31 | 刘雨兰 | Dynamic precision detection method for wire conveying system of wire cutting machine tool |
| CN102169335B (en) * | 2011-04-29 | 2014-08-27 | 国家电网公司 | Dynamic precision detection method for wire conveying system of wire cutting machine tool |
| CN115297984A (en) * | 2020-03-18 | 2022-11-04 | 三菱电机株式会社 | Multi-wire electric discharge machine and multi-wire electric discharge machining system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080206 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |