CN104786265B - One senses the electric current breaking testing circuit that declines - Google Patents
One senses the electric current breaking testing circuit that declines Download PDFInfo
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- CN104786265B CN104786265B CN201510196091.5A CN201510196091A CN104786265B CN 104786265 B CN104786265 B CN 104786265B CN 201510196091 A CN201510196091 A CN 201510196091A CN 104786265 B CN104786265 B CN 104786265B
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Abstract
The invention discloses one and sense the electric current breaking testing circuit that declines.Described circuit includes that the pumping signal that signal connects successively produces circuit, pumping signal change-over circuit, signal transmission circuit, induction of signal circuit and signal processing circuit: also include the power module powered for each functional module.Wherein, signal transmission circuit and induction of signal circuit use magnetic ring coil, and two groups of coils are enclosed within outside main shaft and are screwed on spindle drum.Pumping signal produces circuit and exports the oscillator signal of a fixed frequency to transmitting coil, when cutter gets into workpiece, induction coil can produce faradic current, when equipment is properly functioning, often bore a hole, measure loop just has a detection signal output, PC carries out real time contrast current location and meansigma methods thereof simultaneously, thus judges drill bit whether drop.Compared with prior art, the present invention can detect machine tool situation in real time, finds breaking situation in time, and detection sensitivity is high, can effectively guarantee the quality of production and production efficiency.
Description
Technical field
The present invention relates to detection field, particularly relate to a kind of electricity of breaking detection in cutter of drill machine work process
Road.
Background technology
At present during printed substrate numerical control drilling machine processing micropore, more and more higher to the speed of boring and the requirement of precision, bore
Cutter is the thinnest more frangibility, in this case, it is possible to detection breaking situation is particularly important real-time and accurately.But, existing one
Often there is the problems such as detection sensitivity is low, fault rate is high in a little 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 sensing and declines electric current breaking
Testing circuit.
Present invention provide the technical scheme that one senses the electric current breaking testing circuit that declines, including:
Pumping signal produces circuit, is supplied to signal transmission circuit for producing the oscillator signal of fixed frequency；
Pumping signal change-over circuit, it is connected to pumping signal and produces between circuit and signal transmission circuit, for swashing
Encourage the square-wave signal that signal generating circuit produces to be converted to triangular wave and input to transmitting coil；
Signal transmission circuit, uses the first magnetic ring coil, is installed on the main shaft of machine tool, in order to machine tool master
Axle produces corresponding signal when rotating boring, and exports after treatment；
Induction of signal circuit, uses the second magnetic ring coil, the first magnet ring wire during in order to sense lathe tool contact drilled thing
The signal that circle produces and exports, and it 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 includes pumping signal change-over circuit, and it is connected to pumping signal and produces circuit and signal
Between radiating circuit, export again to signal transmission circuit after the oscillator signal of fixed frequency is carried out conversion process.
Described breaking testing circuit also includes the power module powered for each functional module.
Compared with prior art, present invention have the advantage that described breaking testing circuit can detect machine tool in real time
Situation, finds breaking situation in time, and detection sensitivity is high, can effectively guarantee the quality of production and production efficiency.
Accompanying drawing explanation
Fig. 1 is that magnetic ring coil of the present invention assembles 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 is carried out further below in conjunction with accompanying drawing and embodiment for the ease of it will be appreciated by those skilled in the art that
Describe in detail.
Circuit of the present invention includes that the pumping signal that signal connects successively produces circuit, pumping signal change-over circuit, letter
Number radiating circuit, induction of signal circuit and signal processing circuit.Additionally include the power module powered for each functional module.
Wherein, signal transmission circuit and induction of signal circuit use magnetic ring coil, and two groups of coils are enclosed within main shaft external screw
It is fixed on spindle drum.It is enclosed within outside main shaft 4 also as it is shown in figure 1, launch and sense small one and large one two groups of coil composition magnetic ring coil 3
Being screwed on spindle drum 1, main shaft flap 2 is used for fixed main shaft together with spindle drum 1.
Pumping signal produces circuit and is supplied to signal transmission circuit for the oscillator signal producing fixed frequency；Signal is launched
Circuit is the first magnetic ring coil, is installed on the main shaft of machine tool, in order to produce when machine tool spindle rotates boring
Corresponding signal, and export after treatment；Induction of signal circuit is the second magnetic ring coil, drilled in order to sense lathe tool contact
The signal that during thing, the first magnetic ring coil produces and exports, and it is transferred to signal processing circuit；Signal processing circuit is in order to second
Magnetic ring coil processes, and is delivered to machine tool system.Pumping signal change-over circuit is for entering the oscillator signal of fixed frequency
Export again to signal transmission circuit after row conversion process.
When implementing, as in figure 2 it is shown, pumping signal produces, circuit employing is double to be sealed in and goes out four bit shift register chips
U4, two-way depositor composes in series concussion exciting circuit, produces fixed frequency signal output.Such as Fig. 3, pumping signal change-over circuit
Can use phase inverter integrated chip U3, two-way inverter series in integrated chip U3, pumping signal sequentially passes through electric capacity, resistance divides
Not accessing first, second phase inverter U3-B, U3-A input, the second phase inverter U3-A outfan also connects pumping signal simultaneously
End；Second phase inverter U3-A output end signal is connected to audion Q3, and audion Q3 colelctor electrode connects power supply, grounded emitter；
After the signal accessed is amplified by audion Q3, colelctor electrode export to the first magnetic ring coil.As shown in Figure 4, signal processing circuit
Use the four high guaily unit TL074C of high input impedance, utilize the amplification of this integrated chip internal transistor that induced signal is carried out
Multistage processing and amplifying.Meanwhile, the signal after processing and amplifying passes through a photoelectrical coupler PC121, utilizes the electrical isolation of optocoupler
Effect improves the capacity of resisting disturbance of signal.
The overall work principle of the present invention is: pumping signal produces the oscillator signal of circuit output fixed frequency to launching line
Circle, when cutter gets into workpiece, induction coil can produce faradic current, exports one after processing the induced signal produced
Detection signal, triggers motion control card record current location simultaneously.When equipment is properly functioning, often bore a hole, measure loop
Just having a detection signal output, PC carries out real time contrast current location and meansigma methods thereof simultaneously, thus judges to bore
Head whether drop.Each functional module uses above-described embodiment introduction to realize, and empirical tests Detection results more preferably, may be used without it certainly
His similar functions circuit realiration, or circuit of the present invention is done small conversion and equivalent, as long as it is to use magnet ring wire
It is identical with the present invention that cast formula carries out current emission sensing, whole detection circuit module and detection thinking, all should belong to the present invention
Protection domain.In the another present invention, the not concrete part introduced all can use ripe functional module in prior art, does not goes to live in the household of one's in-laws on getting married at this
State.
Claims (3)
1. a sensing declines electric current breaking testing circuit, it is characterised in that: include
Pumping signal produces circuit, is supplied to signal transmission circuit for producing the oscillator signal of fixed frequency；
Pumping signal change-over circuit, it is connected to pumping signal and produces between circuit and signal transmission circuit, for excitation being believed
Number produce the square-wave signal that circuit produces to be converted to triangular wave and input to transmitting coil；
Signal transmission circuit, uses the first magnetic ring coil, is installed on the main shaft of machine tool, in order to turn in machine tool spindle
Produce corresponding signal during dynamic boring, and export after treatment；
Induction of signal circuit, uses the second magnetic ring coil, and during in order to sense lathe tool contact drilled thing, the first magnetic ring coil is produced
Raw also output signal, and it 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 pumping signal produces
Circuit employing is double to be sealed in and goes out four bit shift register chip U4, and two-way depositor composes in series concussion exciting circuit, produces solid
Determine frequency signal output.
Sensing the most according to claim 1 declines electric current breaking testing circuit, it is characterised in that: described signal processing circuit
Use the four high guaily unit integrated chip TL074C of high input impedance, by the amplification of described integrated chip internal transistor to sense
Induction signal carries out multistage processing and amplifying, and the signal after processing and amplifying is exported by photoelectrical coupler PC121.
Sensing the most according to claim 1 declines electric current breaking testing circuit, it is characterised in that: described pumping signal is changed
Circuit uses phase inverter integrated chip U3, and two-way inverter series in integrated chip U3, pumping signal sequentially passes through electric capacity, resistance
Being respectively connected to first, second phase inverter U3-B, U3-A input, the second phase inverter U3-A outfan also connects pumping signal simultaneously
End；Second phase inverter U3-A output end signal is connected to audion Q3, and audion Q3 colelctor electrode connects power supply, grounded emitter；
After the signal accessed is amplified by audion Q3, colelctor electrode export to the first magnetic ring coil.
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 CN104786265A (en) | 2015-07-22 |
| CN104786265B true 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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Families Citing this family (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 |
| CN114717832B (en) * | 2022-04-18 | 2023-06-02 | 江苏天鸟高新技术股份有限公司 | Rapid detection method for broken needle for spinning |
Family Cites Families (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 |
| CN103522124B (en) * | 2013-10-25 | 2017-11-03 | 惠州市大亚湾天马电子机械有限公司 | A kind of triggering device and its triggering method detected for wiring board drilling machine breaking |
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2015
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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. |
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| TR01 | Transfer of patent right |