CN104786265A - Inductive microcurrent cutter breaking detection circuit - Google Patents
Inductive microcurrent cutter breaking detection circuit Download PDFInfo
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- CN104786265A CN104786265A CN201510196091.5A CN201510196091A CN104786265A CN 104786265 A CN104786265 A CN 104786265A CN 201510196091 A CN201510196091 A CN 201510196091A CN 104786265 A CN104786265 A CN 104786265A
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Abstract
The invention discloses an inductive microcurrent cutter breaking detection circuit. The circuit comprises an excitation signal generation circuit, an excitation signal conversion circuit, a signal transmitting circuit, a signal induction circuit and a signal processing circuit, all of which are in sequential signal connection. The inductive microcurrent cutter breaking detection circuit further comprises a power module supplying power to all function modules. The signal transmitting circuit and the signal induction circuit adopt magnetic loop coils. The coils are arranged outside a spindle in a sleeving mode to be fixed to a spindle seat through screws. The excitation signal generation circuit outputs an oscillation signal at the fixed frequency to a transmitting coil. When a cutter drills a workpiece, an induction coil will generate induction current. When equipment normally runs, a detection loop will output a detection signal every time a hole is drilled, and meanwhile a PC compares a current position with an average value of the current position in real time, so that whether a drill bit is broken or not is judged. Compared with the prior art, the inductive microcurrent cutter breaking detection circuit can detect the condition of the machine tool cutter in real time, the cutter breakage phenomenon is found in time, the detection sensitivity is high, and the production quality and efficiency can be effectively ensured.
Description
Technical field
The present invention relates to detection field, particularly relate to a kind of circuit detected for breaking in cutter of drill machine work process.
Background technology
During current printed substrate numerical control drilling machine processing micropore, more and more higher to the requirement of the speed of holing and precision, the more thin more frangibility of drill, in this case, can detect breaking situation very important real-time and accurately.But often there is the problems such as detection sensitivity is low, fault rate is high in more existing knife-breaking detecting methods.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of highly sensitive reliable and stable induction and declines electric current breaking testing circuit.
Technical scheme provided by the invention is: one responds to the electric current breaking testing circuit that declines, and comprising:
Pumping signal produces circuit, and the oscillator signal for generation of fixed frequency is supplied to signal transmission circuit;
Pumping signal change-over circuit, it is connected to pumping signal and produces between circuit and signal transmission circuit, and the square-wave signal produced for pumping signal being produced circuit is converted to triangular wave and inputs to transmitting coil;
Signal transmission circuit, adopts the first magnetic ring coil, is installed on the main shaft of machine tool, in order to produce corresponding signal when machine tool spindle rotates boring, and exports after treatment;
Induction of signal circuit, adopts the second magnetic ring coil, and during in order to respond to lathe tool contact drilled thing, the first magnetic ring coil produces and the signal exported, and is transferred to signal processing circuit;
Signal processing circuit, in order to process the second magnetic ring coil, and is delivered to machine tool system.
Described breaking testing circuit also comprises pumping signal change-over circuit, and it is connected to pumping signal and produces between circuit and signal transmission circuit, after carrying out conversion process to the oscillator signal of fixed frequency, export to signal transmission circuit again.
Described breaking testing circuit also comprises the power module of powering for each functional module.
Compared with prior art, tool of the present invention has the following advantages: described breaking testing circuit can detect machine tool situation in real time, Timeliness coverage breaking situation, and detection sensitivity is high, can effectively guarantee the quality of production and production efficiency.
Accompanying drawing explanation
Fig. 1 is magnetic ring coil of the present invention assembling schematic diagram;
Fig. 2 is that pumping signal of the present invention produces circuit embodiments schematic diagram;
Fig. 3 is pumping signal change-over circuit embodiment schematic diagram of the present invention;
Fig. 4 is signal processing circuit embodiment schematic diagram of the present invention.
Detailed description of the invention
The present invention to be explained in further detail below in conjunction with accompanying drawing and embodiment for the ease of it will be appreciated by those skilled in the art that.
Circuit of the present invention comprises pumping signal generation circuit, the pumping signal change-over circuit that signal successively connects, signal transmission circuit, induction of signal circuit and signal processing circuit.Also comprise the power module of powering for each functional module in addition.
Wherein, signal transmission circuit and induction of signal circuit adopt magnetic ring coil, and two groups of coils are enclosed within outside main shaft and are screwed on spindle drum.As shown in Figure 1, launch and respond to small one and large one two groups of coils composition magnetic ring coil 3 to be enclosed within main shaft 4 outer and be screwed on spindle drum 1, main shaft flap 2 and spindle drum 1 one are used from fixed main shaft.
Pumping signal generation circuit is supplied to signal transmission circuit for generation of the oscillator signal of fixed frequency; Signal transmission circuit is the first magnetic ring coil, is installed on the main shaft of machine tool, in order to produce corresponding signal when machine tool spindle rotates boring, and exports after treatment; Induction of signal circuit is the second magnetic ring coil, and during in order to respond to lathe tool contact drilled thing, the first magnetic ring coil produces and the signal exported, and is transferred to signal processing circuit; Signal processing circuit in order to process the second magnetic ring coil, and is delivered to machine tool system.Pumping signal change-over circuit exports to signal transmission circuit after being used for carrying out conversion process to the oscillator signal of fixed frequency again.
During specific implementation, as shown in Figure 2, pumping signal produces circuit employing pair and seals in and go out four bit shift register chip U4, and two-way register composes in series concussion exciting circuit, produces fixed frequency signal and exports.As Fig. 3, pumping signal change-over circuit can adopt phase inverter integrated chip U3, two-way inverter series in integrated chip U3, pumping signal accesses first, second phase inverter U3-B, U3-A input respectively through electric capacity, resistance successively, and the second phase inverter U3-A output also connects pumping signal end simultaneously; Second phase inverter U3-A output end signal is connected to triode Q3, and triode Q3 colelctor electrode connects power supply, grounded emitter; Triode Q3 exports to the first magnetic ring coil by colelctor electrode after being amplified by the signal of access.As shown in Figure 4, signal processing circuit adopts the four high guaily unit TL074C of high input impedance, utilizes the amplification of this integrated chip internal transistor to carry out multistage amplification process to induced signal.Meanwhile, amplify the signal after process by a photoelectrical coupler PC121, utilize the electrical isolation effect of optocoupler to improve the antijamming capability of signal.
Overall work principle of the present invention is: pumping signal produces circuit and exports the oscillator signal of fixed frequency to transmitting coil, when cutter gets into workpiece, induction coil can produce induced-current, rear output detection signal is processed to the induced signal produced, simultaneously triggered motion control card record current location.When equipment normally runs, often bore a hole, measure loop just has a detection signal and exports, and PC carries out real time contrast current location and mean value thereof simultaneously, thus judges whether drill bit breaks.Each functional module adopts above-described embodiment introduction to realize; empirical tests Detection results is better; certainly other similar functions circuit realiration can also be adopted; or small conversion and equivalent replacement are done to circuit of the present invention; as long as it adopts magnetic ring coil form to carry out current emission induction; whole detection circuit module and detect thinking identical with the present invention, all should protection scope of the present invention be belonged to.In another the present invention, the not concrete part introduced all can adopt ripe functional module in prior art, is not repeated herein.
Claims (4)
1. induction declines an electric current breaking testing circuit, it is characterized in that: comprise
Pumping signal produces circuit, and the oscillator signal for generation of fixed frequency is supplied to signal transmission circuit;
Pumping signal change-over circuit, it is connected to pumping signal and produces between circuit and signal transmission circuit, and the square-wave signal produced for pumping signal being produced circuit is converted to triangular wave and inputs to transmitting coil;
Signal transmission circuit, adopts the first magnetic ring coil, is installed on the main shaft of machine tool, in order to produce corresponding signal when machine tool spindle rotates boring, and exports after treatment;
Induction of signal circuit, adopts the second magnetic ring coil, and during in order to respond to lathe tool contact drilled thing, the first magnetic ring coil produces and outputs signal, and is transferred to signal processing circuit;
Signal processing circuit, in order to process the second magnetic ring coil, and is delivered to machine tool system.
2. induction according to claim 1 declines electric current breaking testing circuit, it is characterized in that: described pumping signal produces circuit employing pair and seals in and go out four bit shift register chip U4, two-way register composes in series concussion exciting circuit, produces fixed frequency signal and exports.
3. induction according to claim 1 declines electric current breaking testing circuit, it is characterized in that: described signal processing circuit adopts the four high guaily unit integrated chip TL074C of high input impedance, carry out multistage amplification process by the amplification of described integrated chip internal transistor to induced signal, the signal amplified after process is exported by photoelectrical coupler PC121.
4. induction according to claim 1 declines electric current breaking testing circuit, it is characterized in that: described pumping signal change-over circuit adopts phase inverter integrated chip U3, two-way inverter series in integrated chip U3, pumping signal accesses first, second phase inverter U3-B, U3-A input respectively through electric capacity, resistance successively, and the second phase inverter U3-A output also connects pumping signal end simultaneously; Second phase inverter U3-A output end signal is connected to triode Q3, and triode Q3 colelctor electrode connects power supply, grounded emitter; Triode Q3 exports to the first magnetic ring coil by colelctor electrode after being amplified by the signal of access.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510196091.5A CN104786265B (en) | 2015-04-23 | 2015-04-23 | One senses the electric current breaking testing circuit that declines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510196091.5A CN104786265B (en) | 2015-04-23 | 2015-04-23 | One senses the electric current breaking testing circuit that declines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104786265A true CN104786265A (en) | 2015-07-22 |
| CN104786265B CN104786265B (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510196091.5A Active CN104786265B (en) | 2015-04-23 | 2015-04-23 | One senses the electric current breaking testing circuit that declines |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128302A (en) * | 2018-08-02 | 2019-01-04 | 上海凯思尔电子有限公司 | Bore channel knife breaking alarm monitoring method |
| CN114717832A (en) * | 2022-04-18 | 2022-07-08 | 江苏天鸟高新技术股份有限公司 | Rapid detection method for broken needles for spinning |
Citations (6)
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| CN2671726Y (en) * | 2004-01-16 | 2005-01-19 | 深圳市大族激光科技股份有限公司 | Contact type broken cutter monitor for PCB drilling machine |
| CN2723087Y (en) * | 2004-08-06 | 2005-09-07 | 成都航晨数控设备有限公司 | Broken drill real time detector for printing plate digital control machine tool |
| CN2780388Y (en) * | 2005-05-10 | 2006-05-17 | 成都星维科自动化设备有限公司 | Broken knife detecting device for printing circuit board hole drilling machine |
| CN2836964Y (en) * | 2005-09-23 | 2006-11-15 | 惠州市大亚湾天马电子机械有限公司 | Cutter position measuring device for printed circuit board drill press |
| CN200981128Y (en) * | 2006-08-14 | 2007-11-28 | 江门市科杰机械自动化有限公司 | Broken knife detecting system for printing breadboard digital control drilling machine tool |
| CN103522124A (en) * | 2013-10-25 | 2014-01-22 | 惠州市大亚湾天马电子机械有限公司 | Trigger device for knife breakage detection of printed circuit board drilling machine and triggering method thereof |
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2015
- 2015-04-23 CN CN201510196091.5A patent/CN104786265B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2671726Y (en) * | 2004-01-16 | 2005-01-19 | 深圳市大族激光科技股份有限公司 | Contact type broken cutter monitor for PCB drilling machine |
| CN2723087Y (en) * | 2004-08-06 | 2005-09-07 | 成都航晨数控设备有限公司 | Broken drill real time detector for printing plate digital control machine tool |
| CN2780388Y (en) * | 2005-05-10 | 2006-05-17 | 成都星维科自动化设备有限公司 | Broken knife detecting device for printing circuit board hole drilling machine |
| CN2836964Y (en) * | 2005-09-23 | 2006-11-15 | 惠州市大亚湾天马电子机械有限公司 | Cutter position measuring device for printed circuit board drill press |
| CN200981128Y (en) * | 2006-08-14 | 2007-11-28 | 江门市科杰机械自动化有限公司 | Broken knife detecting system for printing breadboard digital control drilling machine tool |
| CN103522124A (en) * | 2013-10-25 | 2014-01-22 | 惠州市大亚湾天马电子机械有限公司 | Trigger device for knife breakage detection of printed circuit board drilling machine and triggering method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128302A (en) * | 2018-08-02 | 2019-01-04 | 上海凯思尔电子有限公司 | Bore channel knife breaking alarm monitoring method |
| CN114717832A (en) * | 2022-04-18 | 2022-07-08 | 江苏天鸟高新技术股份有限公司 | Rapid detection method for broken needles for spinning |
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| Publication number | Publication date |
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| CN104786265B (en) | 2016-09-28 |
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Effective date of registration: 20180131 Address after: 343000 East District of Suichuan County Industrial Park, Ji'an, Jiangxi Patentee after: Suichuan Tianma Numerical Control Co., Ltd. Address before: 516081 Guangdong province Huizhou city Dayawan District Xia Chung Town Yi Lian Village Patentee before: Huizhou Timax Da Ya Bay Electronics & Machinery Co., Ltd. |