CN104792273A - Differential transmission based cutter diameter detection circuit - Google Patents
Differential transmission based cutter diameter detection circuit Download PDFInfo
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- CN104792273A CN104792273A CN201510196014.XA CN201510196014A CN104792273A CN 104792273 A CN104792273 A CN 104792273A CN 201510196014 A CN201510196014 A CN 201510196014A CN 104792273 A CN104792273 A CN 104792273A
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- differential transmission
- circuit
- signal
- diameter
- transmission circuit
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Abstract
The invention relates to a differential transmission based cutter diameter detection circuit which comprises a diameter detector connected with a cutter, and a signal transmission module and a signal processing module which are sequentially connected with the diameter detector, the signal transmission module comprises a first differential transmission circuit connected to the output end of the diameter detector and a second differential transmission circuit connected to the input end of the signal processing module, and the output end of the first differential transmission circuit is connected with the input end of the second differential transmission circuit. Signals are detected by adopting a differential transmission bus, so that interference rejection capacity is improved, and accuracy and reliability in diameter detection of the cutter can be greatly improved.
Description
Technical field
The present invention relates to detection field, particularly relate to a kind of cutter of drill machine examine of diameter circuit.
Background technology
Current printed-wiring board (PWB) numerical control drilling machine is when processing micropore, more and more higher to the requirement of speed and precision, during boring, tool diameter mistake easily causes sheet material to scrap, in this case, tool diameter can be detected exactly and not only increase the Autonomous test ability of lathe to cutter, decrease the generation of artificial incorrect operation situation, avoiding because operator neglects the adverse consequences caused, is also the powerful guarantee of production efficiency.And more existing tool diameter detection method adopts OC door to export, antijamming capability does not easily cause the problem that fault rate is high by force, the present invention is directed to this problem and devises a kind of examine of diameter mode based on differential transmission.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of antijamming capability strong stability reliably based on the tool diameter testing circuit of differential transmission.
Technical scheme provided by the invention is: a kind of tool diameter testing circuit based on differential transmission, comprise the diameter detector be connected with cutter, the signal transmission module be connected with diameter detector, and the signal processing module to be connected with signal transmission module, described signal transmission module comprises the first differential transmission circuit being connected to diameter detector output terminal and the second differential transmission circuit be connected with signal processing module input end, and described first differential transmission circuit output terminal connects the second differential transmission circuit input end.
Concrete, described first differential transmission circuit adopts integrated chip LT17851, and its DI termination enters diameter detector output signal, is held after treatment export to the second differential transmission circuit by A, B; RE, DE end of described integrated chip LT17851 links together and connects power supply by resistance.Described second differential transmission circuit comprises integrated chip LT17851, and its A, B termination enters the first differential transmission circuit signal, is held after treatment export to signal processing circuit by DI; RE, DE end of described integrated chip LT17851 links together and by resistance eutral grounding, passes through another resistance connection control signal simultaneously.
Concrete, described diameter detector is laser detector.
Concrete, described testing circuit also comprises for each functional module provides the power circuit of power supply.
Compared with prior art, tool of the present invention has the following advantages: adopt differential bus transmission detection signal, improve antijamming capability, improves accuracy and the reliability of tool diameter detection.
Accompanying drawing explanation
Fig. 1 is laser emitting module embodiment circuit diagram in laser detector of the present invention.
Fig. 2 is laser pick-off module embodiments circuit diagram in laser detector of the present invention;
Fig. 3 is the first differential transmission circuit embodiment circuit diagram of the present invention;
Fig. 4 is the second differential transmission circuit embodiment circuit diagram of the present invention.
Embodiment
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.
As Figure 1-4, described tool diameter testing circuit, the examine of diameter of drill on drilling machine, its basic functional principle utilizes laser diameter detecting device, accepted by Laser emission, by the diameter of laser areal calculation cutter be blocked.The respective data transfer received need be carried out computing to data processing module by laser diameter detecting device, finally obtains tool diameter.Therefore, in transmitting procedure, the stability of data and reliability are just most important.
Therefore, examine of diameter circuit of the present invention comprises the diameter detector be connected with cutter, the signal transmission module be connected with diameter detector, and the signal processing module to be connected with signal transmission module, described signal transmission module comprises the first differential transmission circuit being connected to diameter detector output terminal and the second differential transmission circuit be connected with signal processing module input end, and described first differential transmission circuit output terminal connects the second differential transmission circuit input end.
As Fig. 3, the first differential transmission circuit adopts integrated chip LT17851, and its DI termination enters diameter detector output signal, is held after treatment export to the second differential transmission circuit by A, B; RE, DE end of described integrated chip LT17851 links together and connects power supply by resistance R16.As Fig. 4, second differential transmission circuit also adopts integrated chip LT17851, but its peripheral circuit connects different from the first differential transmission circuit, forms dual input list and exports, specifically A, B termination enters the first differential transmission circuit signal, is held after treatment export to signal processing circuit by DI; RE, DE end of described integrated chip LT17851 links together and by resistance R21 ground connection, passes through resistance R20 connection control signal simultaneously.
In laser detector, laser emitting module as shown in Figure 1, controls LASER Discharge Tube Emission Lasers by peripheral circuit, and wherein ON_OFF holds in order to input control signal to control emissive porwer and the amplitude of laser.In laser detector, laser pick-off module as shown in Figure 2, after receiving laser signal by laser pick-off head J3, signal OUT-S is taken out by triode Q2 collector, export the first differential transmission circuit in signal transmission module to, then calculate via exporting to signal processing circuit after the second differential transmission circuit.Laser detector is existing mature technology module, then this does not repeat.
Claims (5)
1. the tool diameter testing circuit based on differential transmission, comprise the diameter detector be connected with cutter, the signal transmission module be connected with diameter detector, and the signal processing module to be connected with signal transmission module, it is characterized in that: described signal transmission module comprises the first differential transmission circuit being connected to diameter detector output terminal and the second differential transmission circuit be connected with signal processing module input end
Described first differential transmission circuit output terminal connects the second differential transmission circuit input end.
2. the tool diameter testing circuit based on differential transmission according to claim 1, it is characterized in that: described first differential transmission circuit comprises integrated chip LT17851, its DI termination enters diameter detector output signal, is held after treatment export to the second differential transmission circuit by A, B; RE, DE end of described integrated chip LT17851 links together and connects power supply by resistance.
3. the tool diameter testing circuit based on differential transmission according to claim 2, it is characterized in that: described second differential transmission circuit comprises integrated chip LT17851, its A, B termination enters the first differential transmission circuit signal, is held after treatment export to signal processing circuit by DI; RE, DE end of described integrated chip LT17851 links together and by resistance eutral grounding, passes through another resistance connection control signal simultaneously.
4. the tool diameter testing circuit based on differential transmission according to claim 3, is characterized in that: described diameter detector is laser detector.
5. the tool diameter testing circuit based on differential transmission according to claim 3, is characterized in that: also comprise for each functional module provides the power circuit of power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510196014.XA CN104792273A (en) | 2015-04-23 | 2015-04-23 | Differential transmission based cutter diameter detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510196014.XA CN104792273A (en) | 2015-04-23 | 2015-04-23 | Differential transmission based cutter diameter detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104792273A true CN104792273A (en) | 2015-07-22 |
Family
ID=53557276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510196014.XA Pending CN104792273A (en) | 2015-04-23 | 2015-04-23 | Differential transmission based cutter diameter detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104792273A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2653441Y (en) * | 2003-06-12 | 2004-11-03 | 惠州市大亚湾天马电子机械有限公司 | Circuit board drilling and grinding machine drill bit length and diameter detector |
| 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 |
| CN203054538U (en) * | 2012-12-18 | 2013-07-10 | 南京泽宣自动化工程技术有限公司 | Open type flexible numerical control system motion controller |
| CN103368015A (en) * | 2012-04-10 | 2013-10-23 | 泰科电子(上海)有限公司 | Intelligent connector and bus controller |
-
2015
- 2015-04-23 CN CN201510196014.XA patent/CN104792273A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2653441Y (en) * | 2003-06-12 | 2004-11-03 | 惠州市大亚湾天马电子机械有限公司 | Circuit board drilling and grinding machine drill bit length and diameter detector |
| 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 |
| CN103368015A (en) * | 2012-04-10 | 2013-10-23 | 泰科电子(上海)有限公司 | Intelligent connector and bus controller |
| CN203054538U (en) * | 2012-12-18 | 2013-07-10 | 南京泽宣自动化工程技术有限公司 | Open type flexible numerical control system motion controller |
Non-Patent Citations (1)
| Title |
|---|
| ALLDATASHEETCN.COM: "LT1785I Datasheet", 《HTTP://WWW.ALLDATASHEETCN.COM/VIEW.JSP?SEARCHWORD=LT1785I&SFIELD=4》 * |
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Application publication date: 20150722 |
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| RJ01 | Rejection of invention patent application after publication |