CN2780388Y - Broken knife detecting device for printing circuit board hole drilling machine - Google Patents
Broken knife detecting device for printing circuit board hole drilling machine Download PDFInfo
- Publication number
- CN2780388Y CN2780388Y CN 200520034138 CN200520034138U CN2780388Y CN 2780388 Y CN2780388 Y CN 2780388Y CN 200520034138 CN200520034138 CN 200520034138 CN 200520034138 U CN200520034138 U CN 200520034138U CN 2780388 Y CN2780388 Y CN 2780388Y
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- Prior art keywords
- circuit
- circuit board
- drilling machine
- signal processing
- printed circuit
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Abstract
The utility model relates to a broken knife detecting device for a printed circuit board driller, which relates to a printed circuit board driller, particularly a broken knife detecting device of the printed circuit board driller. The utility model comprises a control system, a signal acquisition circuit and a signal processing circuit, wherein the signal acquisition circuit is connected with a drill knife and a printed circuit board, the signal acquisition circuit is connected with the signal processing circuit through a coupling circuit and the signal processing circuit is connected with the control system. The utility model has the advantages of simple structure of the detecting device, rapid and accurate detection of the positions of a broken knife and high durability, and regardless of the size of the diameter of the drill knife, the detection can be rapid and reliable as the same.
Description
Technical field
The utility model relates to the printed circuit board drilling machine, particularly the breaking checkout gear of printed circuit board drilling machine.
Background technology
Printed circuit board (PCB) (PCB) uses general at electronic technology field.Along with the miniaturization development of components and parts, the components and parts packing density of PCB is more and more high, and PCB processing develops to high accuracy, high density direction gradually, particularly the hole on the PCB is more and more little, density is more and more high, and in whole PCB process, boring is first procedure.Can rupture unavoidably in drilling process owing to bore cutter, after the fracture of brill cutter, if system can not report breaking immediately, the operative employee finds breaking afterwards, then will search the breaking position, and carries out perforations adding, and this will expend a large amount of man-hours; If drilling operating is not found breaking, then can cause pcb board to scrap.What prior art generally adopted is photoelectric detection system, promptly overlap the infrared light receiving/transmitting device that is connected with computer control system with one, to bore cutter places among the light path, form sight alignment, if it is intact to bore cutter, the light of receiving terminal will be blocked, if bore the cutter fracture, receiving terminal just can collect optical signal, and optical signal is converted to the signal of telecommunication through signal processing circuit, can send the breaking signal to system.The shortcoming of this checkout gear is that it is unreliable to detect the minor diameter drill bit, and because the optical fiber of transmission signal fractures easily, the checkout gear fault rate is higher.
Technical problem to be solved in the utility model provides a kind of breaking checkout gear that various diameters bore cutter that is fit to, and this device has the testing result reliable characteristics.
The utility model content
The technical scheme that its technical problem that solves the utility model adopts is that printed circuit board drilling machine breaking checkout gear comprises control system, signal acquisition circuit and signal processing circuit; It is characterized in that: described signal acquisition circuit is connected with printed circuit board (PCB) with the brill cutter; Described signal acquisition circuit is connected with described signal processing circuit by coupling circuit; Described signal processing circuit is connected with control system.
Concrete is: described coupling circuit is the electromagnetic coupled circuit.
Described electromagnetic coupled circuit is made of a pair of coil that is wrapped on the toroidal core.
The beneficial effects of the utility model are, checkout gear is simple in structure, and the breaking position probing quick and precisely; No matter bore the cutter diameter, detection is same rapidly, reliable, and durable in use.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of embodiment;
Fig. 3 is the trace routine flow chart of embodiment.
The specific embodiment
Below in conjunction with drawings and Examples, describe the technical solution of the utility model in detail.
The utility model is that a kind of contact is bored the cutter break detector apparatus, and apparatus structure as shown in Figure 1.With the signal acquisition circuit that the brill cutter is connected with PCB, the activation signal that bores cutter and PCB is gathered, by coupling circuit the signal of gathering is sent to signal processing circuit and handles, be sent to control system then and discern.Control system judges according to the situation of boring the knife up degree and contacting with PCB whether bore cutter ruptures.
Embodiment
The printed circuit board drilling machine breaking checkout gear that this is routine, circuit structure as shown in Figure 2.
During drilling machine work, bore on the cutter and can produce induced signal.When this example utilized the brill cutter to contact with PCB, the variation of induced signal was bored the sign that cutter contacts with PCB as judging.Among Fig. 2, bore cutter and PCB and link together by coil L1, coil L1 is the part that this routine signal acquisition circuit also is a coupling circuit, and another part of coupling circuit is coil L2, coil L2 is connected with signal processing circuit, and coil L1 and coil L2 are coupled by magnet ring M.
Among Fig. 2, signal processing circuit comprises wave filter, amplifier, circuits for triggering and photoelectric isolating circuit.Wave filter is connected with coil L2, the output of wave filter is connected with amplifier in, the output of amplifier is connected with the circuits for triggering input, the circuits for triggering output is connected with the photoelectric isolating circuit input, the photoelectric isolating circuit output is connected with control system, and the reset signal of control system output is connected with the circuits for triggering reset terminal.
The course of work of this routine device is as follows:
Fig. 3 is the trace routine flow chart.As shown in the drawing, after device powered on, control system was finished initialization.Bore cutter under control system control, begin to descend from the operating position, when the brill cutter drops to the h height, bore cutter and contact with PCB, the induced signal among the coil L1 produces transition, this signal is coupled to coil L2, through handling, make the circuits for triggering counter-rotating, photoelectric isolating circuit is to controller output signal, controller record h height, and with this elemental height standard as PCB.Bore cutter and begin from the operating position to descend when holing at every turn, controller output reset signal, circuits for triggering make zero and reset, and controller prepares to receive next induced signal.If when the brill cutter dropped to the h height, controller did not receive induced signal, controller just sends breaking information.Perhaps, though controller is received induced signal, the distance of boring cutter decline has surpassed the h value, and controller also can send breaking information.
Claims (4)
1, printed circuit board drilling machine breaking checkout gear comprises control system, signal acquisition circuit and signal processing circuit; It is characterized in that: described signal acquisition circuit is connected with printed circuit board (PCB) with the brill cutter; Described signal acquisition circuit is connected with described signal processing circuit by coupling circuit; Described signal processing circuit is connected with control system.
2, printed circuit board drilling machine breaking checkout gear according to claim 1, it is characterized in that: described coupling circuit is the electromagnetic coupled circuit.
3, printed circuit board drilling machine breaking checkout gear according to claim 2, it is characterized in that: described electromagnetic coupled circuit is made of a pair of coil that is wrapped on the toroidal core.
4, according to claim 1,2 or 3 described printed circuit board drilling machine breaking checkout gears, it is characterized in that: described signal processing circuit comprises wave filter, amplifier, circuits for triggering and photoelectric isolating circuit; Described filter circuit is connected with described coupling circuit; Described amplifier is connected with wave filter; Described circuits for triggering are connected with amplifier; Described photoelectric isolating circuit is connected with circuits for triggering; Described control system is connected with circuits for triggering and photoelectric isolating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520034138 CN2780388Y (en) | 2005-05-10 | 2005-05-10 | Broken knife detecting device for printing circuit board hole drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520034138 CN2780388Y (en) | 2005-05-10 | 2005-05-10 | Broken knife detecting device for printing circuit board hole drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2780388Y true CN2780388Y (en) | 2006-05-17 |
Family
ID=36761588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520034138 Expired - Fee Related CN2780388Y (en) | 2005-05-10 | 2005-05-10 | Broken knife detecting device for printing circuit board hole drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2780388Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI472399B (en) * | 2012-02-10 | 2015-02-11 | 中原大學 | Online cutting tool real-time monitoring method |
| CN104786265A (en) * | 2015-04-23 | 2015-07-22 | 惠州市大亚湾天马电子机械有限公司 | Inductive microcurrent cutter breaking detection circuit |
| CN105290881A (en) * | 2015-11-12 | 2016-02-03 | 东莞市发斯特精密五金有限公司 | Breaking detection device for cutter |
| CN112809824A (en) * | 2021-04-19 | 2021-05-18 | 苏州维嘉科技股份有限公司 | Drilling machine and drilling method and drilling device thereof |
-
2005
- 2005-05-10 CN CN 200520034138 patent/CN2780388Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI472399B (en) * | 2012-02-10 | 2015-02-11 | 中原大學 | Online cutting tool real-time monitoring method |
| CN104786265A (en) * | 2015-04-23 | 2015-07-22 | 惠州市大亚湾天马电子机械有限公司 | Inductive microcurrent cutter breaking detection circuit |
| CN105290881A (en) * | 2015-11-12 | 2016-02-03 | 东莞市发斯特精密五金有限公司 | Breaking detection device for cutter |
| CN112809824A (en) * | 2021-04-19 | 2021-05-18 | 苏州维嘉科技股份有限公司 | Drilling machine and drilling method and drilling device thereof |
| CN112809824B (en) * | 2021-04-19 | 2021-06-25 | 苏州维嘉科技股份有限公司 | Drilling machine and drilling method and drilling device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |