CN101264530B - Contact type broken pin testing system of numerically-controlled PCB hole drilling machine tool - Google Patents
Contact type broken pin testing system of numerically-controlled PCB hole drilling machine tool Download PDFInfo
- Publication number
- CN101264530B CN101264530B CN200810066853XA CN200810066853A CN101264530B CN 101264530 B CN101264530 B CN 101264530B CN 200810066853X A CN200810066853X A CN 200810066853XA CN 200810066853 A CN200810066853 A CN 200810066853A CN 101264530 B CN101264530 B CN 101264530B
- Authority
- CN
- China
- Prior art keywords
- resistance
- positive
- triode
- negative
- common voltage
- 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
Links
Images
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a contact broken pin detection system of numerical control PCB drilling machine, a current limiting resistance R11 and a triode Q1, a triode Q2, a power amplifying circuit which comprises a current limiting resistor R1, a resistor R2 and a typical general operational amplifier C regulate the VR1 potentiometer of the preceding stage oscillation circuit to make the Y-point output an AC high-frequency voltage source the frequency of which is 830KHz, the voltage amplitude is 20V, which is connected with groundwire of a main shaft; a capacitor C2, a resistor R3 and a resistor R4 are connected in series to form a filter circuit. The detection system does not need rectification and filtering, is directly connected with the input end of the comparison amplifier, the reference voltage does not need manual adjustment, the interference resistance of an output signal is strong, the problems that signals lag and mechanical bedplates and presser feet need insulation do not exit. The contact broken pin detection system has the advantages of low cost, and steady performance.
Description
Technical field
The present invention relates to a kind of PCB Drilling Machine cutter broken needle and Z shaft position measurement mechanism.
Background technology
Whether the drill point that how to detect drilling hole machine tool ruptures and the position of broken needle, is the problem that the designer is considering.
As shown in Figure 1, after the spindle rotor chuck is clamped drill point, during work, high-frequency ac power is through high frequency transformer main (high frequency transformer is serially connected in the circuit), through the main shaft stator, air supporting, to the drill point of spindle rotor, with presser feet (presser feet or connect working plate meet GND), metallic conduction thing, contact forms a loop.
Whether a kind of detection that application number is 200420015113.0 patent disclosure the circuit of broken needle and broken needle position.As shown in Figure 2, when machine works, the drill point of spindle rotor and metallic conductor, presser feet constitutes an electric loop, at ac voltage signal of secondary generation of high frequency transformer, through commutation diode D1, with filter capacitor C2, convert ac voltage signal to direct current signal, be input to comparison amplifier, the people is after setting 2 pin reference voltages of comparison amplifier, by high-low level signal of pin output.
Application number is 200720051705.1 patent disclosure second kind of circuit that detects broken needle whether and broken needle position.As shown in Figure 3, regard main shaft as high frequency capacitance, on the main shaft stator, add a high frequency electric source, when machine works through resistance R 4, the drill point of spindle rotor is with presser feet (presser feet or connect working plate meet GND), metallic conduction thing, contact forms a loop, consumes certain electric energy.Cause through D1, the direct current that is added in 3 pin on the comparison amplifier behind the C1 rectifying and wave-filtering is pressed with certain variation, set the reference voltage of comparison amplifier 2 pin after, make high-low level signal of comparison amplifier 1 pin output.
The defective of these two kinds of circuit is, in main shaft work, or main shaft service time long after, main shaft stator insulation layer will occur aging, to have a strong impact on the input sample voltage of comparison amplifier 3 pin,, seriously cause the circuit board job insecurity so need often to adjust the reference voltage of 2 pin; And because the sampled voltage of comparison amplifier 3 pin input is a high-frequency ac voltage, though passed through rectifying and wave-filtering, but be mingled with very big alternating component in the signal, so that the high-low level signal of comparison amplifier output also has been mingled with very big alternating component, will causes significantly the machine electric signal and disturb.And sampled signal has been because of having passed through rectifying and wave-filtering, and output signal will produce the hysteresis of about 1-2ms.So that the machine signal transmission is slow, can not catch the position of current axis timely.
Application number is 200620160010.2 patent disclosure, and the third detects the circuit of broken needle whether and broken needle position.As shown in Figure 4, regard main shaft as high frequency capacitance, high-frequency ac power is connected on the main shaft stator, through air supporting, to the drill point of spindle rotor, contact with metallic conductor, (need the platen insulation from the insulation presser feet again, the presser feet insulation, otherwise when bull Z axle is worked simultaneously, signal will be connected in series or out of control meaning mutually) on draw a line to high frequency transformer, high frequency transformer other end ground connection forms a loop.At ac voltage signal of secondary generation of high frequency transformer, through commutation diode D1 and filter capacitor C2, convert ac voltage signal to direct current signal, be input to comparison amplifier, the people is after setting 2 pin reference voltages of comparison amplifier, by high-low level signal of pin output.
The defective of the third circuit is, though main shaft is got rid of because of the circuit board job insecurity that destabilizing factor in aging and the work causes, but need the preliminary 2 pin reference voltages of adjusting comparison amplifier equally, also need to manufacture insulation presser feet and insulation platen, need to guarantee that the platen between each links to each other with presser feet mutually insulated and discord ground, otherwise will cause string signal and out of control, to having brought very big difficulty in the Machine Design! Equally, the also hysteresis that will produce about 1-2ms because of the output signal that exists rectifying and wave-filtering to bring.So that the machine signal transmission is slow, can not catch the position of current axis timely.
Application number is 200520065065.0 patent disclosure the 4th kind of circuit that detects broken needle whether and broken needle position.As shown in Figure 5, primary coils and air-floating main shaft wiring and figure two, figure three, figure four similar substantially (as Fig. 5), different is to be added in comparison amplifier 3 pin inputs behind the secondary coil voltage rectifying and wave-filtering, with A/D converter DC voltage is converted to binary code, inputs to CPU, CPU suitably strengthens this binary code or dwindles, suitable time-delay then, export to D/A converter, give comparison amplifier 2 pin, make high-low level signal of 1 pin output as reference voltage.
The defective of the 4th kind of circuit is, need the artificial problem of adjusting though solved comparison amplifier 2 pin reference voltages, but do not solve the problem that needs to make insulation platen and insulation presser feet, equally exist the problem of signal lag yet, can not in time catch current position.And the circuit production complexity, the cost height very easily is interfered, the antijamming capability of circuit own very a little less than.In a single day CPU crashes, and this signal is with uncontrolled.
In sum, the defective of prior art is, solves signal lag; Machinery platen and presser feet need insulation; The cost height, it is difficult to make, a little less than the antijamming capability; The circuit board function, unstable properties.
Summary of the invention
In view of this, the objective of the invention is to address the above problem, a kind of circuit is provided, the simple and stable performance of this circuit structure.
Technical scheme of the present invention is: a kind of numerically-controlled PCB hole drilling machine tool contact broken pin testing system is characterized in that: the ac high-frequency voltage source extremely links to each other with the B of NPN type triode Q1 and positive-negative-positive triode Q2; Capacitor C 2, resistance R 3 and resistance R 4 series connection constitute filter circuit; Capacitor C 1 and resistance R 3, resistance R 4 parallel connections constitute energy-storage units; Resistance R 1 extremely links to each other with C from NPN type triode Q1, and resistance R 2 extremely links to each other the C utmost point ground connection of positive-negative-positive triode Q2 with the E utmost point of NPN type triode Q1 and the E of positive-negative-positive triode Q2 respectively; The positive pole of comparison amplifier extremely links to each other with the C of triode Q1, and is connected between capacitor C 2, the resistance R 3, between the negative pole of comparison amplifier and resistance R 3, the resistance R 4, and by capacitor C 1 ground connection; Main shaft extremely links to each other with the E of positive-negative-positive triode Q2, and main shaft drill point, conducting metal body, working plate link to each other with main shaft successively, working plate ground connection.
Described ac high-frequency voltage source comprises the prime oscillating circuit that resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, capacitor C 3, potentiometer VR1 and common voltage comparator A are constituted; The back level oscillator-amplification circuit that R10 and common voltage comparator B constitute, current-limiting resistance R11 links to each other with resistance R 10.
The model of described NPN type triode Q1 is TIP132, and the model of described positive-negative-positive triode Q2 is TIP137, and TIP132 type NPN type triode Q1 and TIP137 type positive-negative-positive triode Q2 constitute power amplifier to be used pipe.
The model of described NPN type triode Q1 is TIP142, and the model of described positive-negative-positive triode Q2 is TIP147, and TIP142 type NPN type triode Q1 and TIP147 type positive-negative-positive triode Q2 constitute power amplifier to be used pipe.
The model of described NPN type triode Q1 is TIP3055, and the model of described positive-negative-positive triode Q2 is TIP2955, and TIP3055 type NPN type triode Q1 and TIP2955 type positive-negative-positive triode Q2 constitute power amplifier to be used pipe.
The model of described NPN type triode Q1 is TIP35C, and the model of described positive-negative-positive triode Q2 is TIP36C, and TIP35C type NPN type triode Q1 and TIP36C type positive-negative-positive triode Q2 constitute power amplifier to be used pipe.
The resistance of described current-limiting resistance R1 is 150 ohm.
The resistance of described resistance R 2 is 1 ohm.
The invention has the beneficial effects as follows: owing to place a sample resistance R1 at high-frequency alternating current potential source direct current power amplifier end, the DC voltage change of cut-off stream power supply, do not need rectification, filtering, directly give the comparison amplifier input, therefore reference voltage does not need artificial adjustment, output signal strong interference immunity, the problem that no signal lags behind.Because working plate is inoperative at circuit, therefore do not need insulation.Cost of the present invention is low, stable performance.
Description of drawings
Fig. 1 is frame for movement of the present invention and schematic diagram of movements;
Fig. 2 is the circuit diagram of background technology 1 of the present invention;
Fig. 3 is the circuit diagram of background technology 2 of the present invention;
Fig. 4 is the circuit diagram of background technology 3 of the present invention;
Fig. 5 is the circuit diagram of background technology 4 of the present invention;
Fig. 6 is a circuit diagram of the present invention.
Among the figure, 1: high-frequency ac power; 2: high frequency transformer; 3: the main shaft ground wire; 4: main shaft; 5: the main shaft drill point; 6: the conducting metal body; 7: working plate.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 6 is circuit theory diagrams of the present invention.The prime oscillating circuit that resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, capacitor C 3, potentiometer VR1 and common voltage comparator A are constituted; The back level oscillator-amplification circuit that R10 and common voltage comparator B constitute; Through current-limiting resistance R11 and NPN type triode Q1, positive-negative-positive triode Q2, the power amplifier that current-limiting resistance R1, resistance R 2 and typical general operational amplifier C constitute.Adjust VR1, producing a frequency is 830KHZ, voltage amplitude is the high frequency voltage source of 20V, the general oscillator-amplification circuit of back level through R10 and common voltage comparator B formation, through resistance R 1, NPN type triode Q1, resistance R 2, positive-negative-positive triode Q2, high-frequency alternating current potential source 1 is carried on the main shaft ground wire 3 through the Y point.Under the normal condition, main shaft drill point 5 does not rupture, and main shaft drill point 5 contacts with conducting metal body 6.Capacitor C 1 through resistance R 4 dividing potential drops, has stored certain electric energy through resistance R 1, resistance R 3 chargings, and this moment, comparison amplifier 1 pin was output as high level signal.When main shaft drill point 5 contacts with conducting metal body 6, entire circuit will consume certain electric energy, because resistance R 1 metering function causes the DC voltage of the tripod of comparison amplifier C that a decline process will be arranged.When comparison amplifier 3 pin voltages begin to descend, and drop to when being lower than 2 pin voltages, comparison amplifier 1 pin will be exported a low voltage signal, up to capacitor C 1 process resistance R 4, resistance R 3 discharges, when comparison amplifier 2 pin voltages were lower than 3 pin voltages, 1 pin was just exported high level signal.
So as long as the tripod voltage of comparison amplifier C has certain variation, comparison amplifier 1 pin just can be exported a pulse signal fast timely.When 5 fractures of main shaft drill point, the tripod voltage that main shaft ground wire 3 is high-impedance state comparison amplifier C does not change, so the output of comparison amplifier 1 pin pulse-free signal.Analyze the output signal of comparison amplifier 1 pin, can analyze the position of broken needle.
Though the present invention is described with reference to current embodiment; but those skilled in the art will be appreciated that; above-mentioned embodiment only is used for illustrating the present invention; be not to be used for limiting protection scope of the present invention; any within the spirit and principles in the present invention scope; any modification of being done, equivalence invention, improvement etc. all should be included within the scope of the present invention.
Claims (8)
1. numerically-controlled PCB hole drilling machine tool contact broken pin testing system, it is characterized in that: the ac high-frequency voltage source extremely links to each other with the B of NPN type triode Q1 and positive-negative-positive triode Q2; Capacitor C 2, resistance R 3 and resistance R 4 series connection constitute filter circuit; Capacitor C 1 and resistance R 4 parallel connections constitute energy-storage units; Resistance R 1 extremely links to each other with C from NPN type triode Q1, and resistance R 2 extremely links to each other the C utmost point ground connection of positive-negative-positive triode Q2 with the E utmost point of NPN type triode Q1 and the E of positive-negative-positive triode Q2 respectively; The positive pole of comparison amplifier extremely links to each other with the C of triode Q1, and is connected between capacitor C 2, the resistance R 3, link to each other between the negative pole of comparison amplifier and resistance R 3, the resistance R 4, and by capacitor C 1 ground connection; Main shaft (4) extremely links to each other with the E of positive-negative-positive triode Q2, and main shaft drill point (5), conducting metal body (6), working plate (7) link to each other with main shaft (4) successively, working plate (7) ground connection;
Analyze the output signal of comparison amplifier output, when fracture does not take place in main shaft drill point (5), pulse signal of comparison amplifier output output, when fracture takes place in main shaft drill point (5), the output of comparison amplifier output pulse-free signal.
2. numerically-controlled PCB hole drilling machine tool contact broken pin testing system according to claim 1 is characterized in that: described ac high-frequency voltage source comprises the prime oscillating circuit that resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, capacitor C 3, potentiometer VR1 and common voltage comparator A are constituted; The back level oscillator-amplification circuit that R10 and common voltage comparator B constitute, current-limiting resistance R11 links to each other with resistance R 10;
Resistance R 5, resistance R 6 series connection, link to each other between the positive pole of common voltage comparator A and resistance R 5, the resistance R 6, resistance R 8 one terminates at the positive pole of common voltage comparator A, and the other end is connected on the output of common voltage comparator A, and the negative pole of common voltage comparator A is by capacitor C 3 ground connection; The negative pole of resistance R 7 one termination common voltage comparator A, other end series connection potentiometer VR1, resistance R 9 ground connection link to each other between the output of common voltage comparator A and potentiometer VR1, the resistance R 9; The output of common voltage comparator B connects current-limiting resistance R11 and resistance R 10 respectively, and the negative pole of common voltage comparator B links to each other with the output of common voltage comparator A, links to each other between the positive pole of common voltage comparator B and current-limiting resistance R11, the resistance R 10.
3. numerically-controlled PCB hole drilling machine tool contact broken pin testing system according to claim 1, it is characterized in that: the model of described NPN type triode Q1 is TIP132, the model of described positive-negative-positive triode Q2 is TIP137, and TIP132 type NPN type triode Q1 and TIP137 type positive-negative-positive triode Q2 constitute power amplifier to be used pipe.
4. numerically-controlled PCB hole drilling machine tool contact broken pin testing system according to claim 1, it is characterized in that: the model of described NPN type triode Q1 is TIP142, the model of described positive-negative-positive triode Q2 is TIP147, and TIP142 type NPN type triode Q1 and TIP147 type positive-negative-positive triode Q2 constitute power amplifier to be used pipe.
5. numerically-controlled PCB hole drilling machine tool contact broken pin testing system according to claim 1, it is characterized in that: the model of described NPN type triode Q1 is TIP3055, the model of described positive-negative-positive triode Q2 is TIP2955, and TIP3055 type NPN type triode Q1 and TIP2955 type positive-negative-positive triode Q2 constitute power amplifier to be used pipe.
6. numerically-controlled PCB hole drilling machine tool contact broken pin testing system according to claim 1, it is characterized in that: the model of described NPN type triode Q1 is TIP35C, the model of described positive-negative-positive triode Q2 is TIP36C, and TIP35C type NPN type triode Q1 and TIP36C type positive-negative-positive triode Q2 constitute power amplifier to be used pipe.
7. numerically-controlled PCB hole drilling machine tool contact broken pin testing system according to claim 1 is characterized in that: the resistance of described resistance R 1 is 150 ohm.
8. numerically-controlled PCB hole drilling machine tool contact broken pin testing system according to claim 1 is characterized in that: the resistance of described resistance R 2 is 1 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810066853XA CN101264530B (en) | 2008-04-25 | 2008-04-25 | Contact type broken pin testing system of numerically-controlled PCB hole drilling machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810066853XA CN101264530B (en) | 2008-04-25 | 2008-04-25 | Contact type broken pin testing system of numerically-controlled PCB hole drilling machine tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101264530A CN101264530A (en) | 2008-09-17 |
| CN101264530B true CN101264530B (en) | 2011-06-01 |
Family
ID=39987340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810066853XA Expired - Fee Related CN101264530B (en) | 2008-04-25 | 2008-04-25 | Contact type broken pin testing system of numerically-controlled PCB hole drilling machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101264530B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108012424A (en) * | 2017-11-29 | 2018-05-08 | 江门市浩昌电子有限公司 | A kind of wiring board perforating device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2008
- 2008-04-25 CN CN200810066853XA patent/CN101264530B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Non-Patent Citations (3)
| Title |
|---|
| JP昭60-255354A 1985.12.17 |
| JP昭61-274849A 1986.12.05 |
| JP特开平5-329750A 1993.12.14 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101264530A (en) | 2008-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104868766A (en) | Inversion device and AC power supply system applying same | |
| CN102677237B (en) | Adaptive photoelectric electronic yarn cleaner | |
| CN105974331A (en) | LED driving power supply detection system | |
| CN202693658U (en) | Differential current detecting device | |
| CN208239569U (en) | A kind of dipulse test platform | |
| CN101264530B (en) | Contact type broken pin testing system of numerically-controlled PCB hole drilling machine tool | |
| CN101246198B (en) | Electric network power-fail detection circuit | |
| CN204945296U (en) | A kind of cellular phone data line tester | |
| CN206594279U (en) | A kind of Switching Power Supply life-span tester | |
| CN205232038U (en) | Variable frequency power supply circuit and TV set | |
| CN205027852U (en) | Electric wire breakpoint detector | |
| CN204859594U (en) | System on chip/SOC's electromagnetic heating control system | |
| CN102222972A (en) | Switching circuit and power supply device | |
| CN201264111Y (en) | Knife break detection apparatus of PCB piercing machine | |
| CN103944071B (en) | The ion circuit for generating that a kind of ionic weight is adjustable | |
| CN103647447B (en) | The supply unit of a kind of electric energy table communication module | |
| CN207070408U (en) | A kind of railway passenger train LED driving power | |
| CN101977347A (en) | Measuring method and measuring circuit for temperature rise of voice coil of dynamic speaker | |
| CN101340076A (en) | Dual-window voltage comparator wire and delay converting circuit | |
| CN204705684U (en) | A kind of electronic cigarette host test tool | |
| CN202576736U (en) | Self-adaptive photoelectric electronic yarn clearer | |
| CN203733719U (en) | Full wave resistive and capacitive voltage reduction relay drive circuit | |
| CN202421476U (en) | Power supply voltage detection circuit applied to bean juice maker | |
| CN204422773U (en) | A kind of broken pin test circuit for PCB drilling machine | |
| CN107943198A (en) | A kind of detection circuit and switch power supply system of switching voltage output current |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: YANG MEIYING Free format text: FORMER OWNER: HUGE WINNERS CNC SYSTEM (SHENZHEN) CO., LTD. Effective date: 20110302 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518103 BUILDING D, SHUANGJINHUI INDUSTRIAL CITY, HEPING VILLAGE, FUYONG TOWN, BAOAN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE TO: 518035 402, BUILDING 39, LIANHUA NORTH, NO.1116, LIANHUA ROAD, FUTIAN DISTRICT |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20110302 Address after: 518035 Lotus Road 1116 Lianhua North 39, 402, Futian District Applicant after: Yang Meiying Address before: 518103, D building, Shuang Hui Hui Industrial Town, Heping Town, Fuyong, Shenzhen, Guangdong, Baoan District Applicant before: Daying NC Equipment(Shenzhen) Co., Ltd. |
|
| 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: 20110601 Termination date: 20120425 |