CN110280858A - Small-hole machine tool penetration detection method and device - Google Patents
Small-hole machine tool penetration detection method and device Download PDFInfo
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- CN110280858A CN110280858A CN201910440279.8A CN201910440279A CN110280858A CN 110280858 A CN110280858 A CN 110280858A CN 201910440279 A CN201910440279 A CN 201910440279A CN 110280858 A CN110280858 A CN 110280858A
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- 238000001514 detection method Methods 0.000 title claims description 35
- 230000035515 penetration Effects 0.000 title abstract 3
- 238000000034 method Methods 0.000 claims abstract description 45
- 238000012545 processing Methods 0.000 claims abstract description 34
- 230000008569 process Effects 0.000 claims abstract description 18
- 238000010892 electric spark Methods 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 238000004590 computer program Methods 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 15
- 238000003860 storage Methods 0.000 claims description 13
- 210000001367 artery Anatomy 0.000 claims description 8
- 210000003462 vein Anatomy 0.000 claims description 8
- 238000009760 electrical discharge machining Methods 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000012224 working solution Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
- B23H9/14—Making holes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention provides a method and a device for detecting the penetration of a small-hole machine tool, wherein the method comprises the following steps: collecting a voltage analog value and a current analog value between a machining electrode and a workpiece; calculating a voltage analog value and a current analog value based on a preset power conversion strategy to obtain processing power; detecting whether the input voltage value is lower than a preset voltage input threshold value, if so, calculating the low-discharge voltage duration in the discharge process; and matching the collected machining power value and the collected low discharge voltage duration with a preset machining power threshold value and a preset low discharge voltage duration threshold value, and determining whether a penetration event occurs according to a matching result. The invention can effectively improve the processing efficiency and the perforating success rate of the electric spark small hole machine tool.
Description
Technical field
The present invention relates to technical field of electricity more particularly to a kind of small hole machine tool breakthrough detection methods and device.
Background technique
Electric spark small hole machine tool is drilled on metal works using the corrosion function that continuously sparking discharges in working solution, but
Also electrode can be caused to corrode while corroding workpiece, and be lost more depending on processing conditions, workpiece material, process velocity etc.
Aspect factor can not accurately speculate loss value, so can not set most suitable electrode machining depth in the actual processing process.
Most of electric spark small hole machine tool existing at present realizes processing using setting designated depth, and this method is easy to appear excessively
Situations such as processing or processing do not penetrate, influences precision and efficiency.
Summary of the invention
It is an object of the present invention to provide a kind of small hole machine tool breakthrough detection method and devices, to solve existing log
Matching process wastes the problem of a large amount of computing resources.
According to the first aspect of the invention, a kind of small hole machine tool breakthrough detection method is provided, comprising:
Acquire the voltage-mode analog values and current-mode analog values between machined electrode and workpiece；
Voltage-mode analog values and current-mode analog values are calculated based on predetermined power switching strategy, obtain working power；
Whether detection input voltage value is lower than predeterminated voltage input threshold values, if so, calculating low discharge voltage in discharge process
Duration；
By the collected working power value, low discharge voltage duration and preset working power threshold values, low discharge electricity
Pressure duration threshold values is matched, and is determined whether to penetrate event according to matching result.
Further, voltage-mode analog values and current-mode analog values are calculated based on predetermined power switching strategy, is processed
Power includes:
It controls AD modulus conversion chip and the collected voltage-mode analog values and current-mode analog values is converted into voltage digital
Value and current digital value；
Product based on the voltage digital value and the current digital value obtains working power.
Further, determined whether to penetrate event according to matching result, comprising:
It grows up when matching result is the low discharge voltage that working power value is greater than preset working power threshold values, and obtains
When the low discharge voltage duration threshold values, determination penetrates event, otherwise, it determines not penetrating event；Wherein, described
It is set between the different arteries and veins stopping times that low discharge voltage duration threshold values is set according to host computer.
Further, it is determined whether after penetrating event, the method also includes:
If it is determined that penetrating event, generation penetrates signal；
It sends and penetrates signal for described, indicate that the further work of servo motor device completion processing refers to control to issue
It enables.
Further, send by it is described penetrate signal after, the method also includes:
The machined electrode rollback is controlled to relocate.
Further, the method also includes:
If it is determined that not penetrating event, timer is reset, and continues whether monitoring input voltage value is lower than default electricity
Pressure input threshold values.
According to the second aspect of the invention, a kind of small hole machine tool penetration-detection device is provided, device includes:
Acquisition module, for acquiring voltage-mode analog values and current-mode analog values between machined electrode and workpiece；
Computing module, for being calculated based on predetermined power switching strategy voltage-mode analog values and current-mode analog values,
Obtain working power；
Detection module, for detecting whether input voltage value is lower than predeterminated voltage input threshold values, if so, calculating discharge process
Middle low discharge voltage duration；
Determining module, for stopping the different working power threshold values and low discharge voltage of interval time setting according to different arteries and veins
Duration threshold values, by the working power threshold values, low discharge voltage duration threshold values and the collected working power value, low discharge
Voltage duration is compared, it is determined whether penetrates event.
According to the third aspect of the invention we, providing electric spark small hole machine tool described in a kind of electric spark small hole machine tool includes:
For penetrate to workpiece the machined electrode of processing；
For collection voltages and electric current and the small hole machine tool penetration-detection device of control electric discharge；
Electrical discharge machining control interface, port controlling device, PC bus interface control device, the servo for controlling machined electrode
Motor driver, the host computer for sending discharging condition and motor movement instructions, the servo motor driving device is in host computer
The machined electrode is driven to carry out small hole machined to workpieces processing under control instruction.
According to the fourth aspect of the invention, a kind of storage medium is provided, the storage medium stores computer program instructions,
The computer program instructions method according to the present invention is executed.
According to the fifth aspect of the invention, a kind of calculating equipment is provided, comprising: for storing depositing for computer program instructions
Reservoir and processor for executing computer program instructions, wherein when the computer program instructions are executed by the processor,
It triggers the calculating equipment and executes method of the present invention.
The present invention by the voltage-mode analog values and current-mode analog values between the machined electrode and workpiece by acquisition at
Reason calculates, and obtains working power；And when detecting input voltage value lower than predeterminated voltage input threshold values, calculate in discharge process
Low discharge voltage duration, according to working power threshold values, low discharge voltage duration threshold values and collected working power value, low discharge
The comparison result of voltage duration, it is determined whether penetrate event.What the present invention can be penetrated by automatic control realization
Accurate detection identification, so that the electric spark small hole machine tool length that machined electrode stretches out workpieces processing when carrying out perforation processing becomes
Controllably, electric spark small hole machine tool processing efficiency and perforation processing success rate are improved.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent upon:
Fig. 1 is the structural schematic diagram of the electric spark small hole machine tool of the embodiment of the present invention one；
Fig. 2 is the process of the small hole machine tool breakthrough detection method of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the small hole machine tool penetration-detection device of the embodiment of the present invention.
The same or similar appended drawing reference represents the same or similar component in attached drawing.
Specific embodiment
Present invention is further described in detail with reference to the accompanying drawing.
Small hole machine tool breakthrough detection method provided by the invention can be applied to electric spark small hole machine tool, and Fig. 1 is electric spark
Small hole machine tool structural schematic block diagram, comprising: for penetrate to workpiece the machined electrode 11 of processing；For collection voltages and electricity
Stream and the small hole machine tool penetration-detection device 12 of control electric discharge；Electrical discharge machining control interface 13, port controlling device 14, PC are total
Line interface control device 15, sends discharging condition and motor movement instructions at the servo motor driving device 16 for controlling machined electrode
Host computer 17, the servo motor driving device PC control instruction under drive the machined electrode to workpieces processing into
The small hole machined of row.Wherein, small hole machine tool penetration-detection device 12 can be control of discharge card, including main control chip FPGA121 with
And AD analog-digital converter 122.The control channel of electric spark small hole machine tool is: computer motherboard (host computer) → PC bus → port
Control → motor motion control and electrical discharge machining control etc..Computer is by PC bus transfer data come to port control device
It is written and read, port controlling device is directly connected with each control target, and computer is controlled by reading-writing port control unit
The parameters of lathe and power supply and the operating status for obtaining them simultaneously.It is very big due to that can be generated in edm process
Electromagnetic interference, so the reception of data and control of discharge and port controlling device fill Serve Motor Control on control of discharge card
The control set is all made of differential signal and is transmitted, and prevents electromagnetic interference.Control of discharge card and host computer or port controlling list
Communication between member can be transmitted using RS422 serial interface standard, and baud rate can be set to 2400bps, on receiving
The information such as the processing conditions of position machine setting.
Small hole machine tool breakthrough detection method provided by the invention specifically can be applied to small hole machine tool penetration-detection device
FPGA (Field-Programmable Gate Array, field programmable gate array),
Fig. 2 is the flow diagram of the small hole machine tool breakthrough detection method of the embodiment of the present invention one, as shown in Fig. 2, this hair
The small hole machine tool breakthrough detection method that bright embodiment one provides, comprising:
Step S201 acquires voltage-mode analog values and current-mode analog values between machined electrode and workpiece；
Step S202 calculates voltage-mode analog values and current-mode analog values based on predetermined power switching strategy, obtains
Working power；
Step S203, whether detection input voltage value is lower than predeterminated voltage input threshold values, if so, calculating low in discharge process
Discharge voltage duration；
Step S204, by the collected working power value, low discharge voltage duration and preset working power threshold values,
Low discharge voltage duration threshold values is matched, and is determined whether to penetrate event according to matching result.
The present invention by the voltage-mode analog values and current-mode analog values between the machined electrode and workpiece by acquisition at
Reason calculates, and obtains working power；And when detecting input voltage value lower than predeterminated voltage input threshold values, calculate in discharge process
Low discharge voltage duration, when by collected working power value, low discharge voltage duration and working power threshold values, low discharge voltage
Long threshold values is compared, and is determined whether to penetrate event according to comparison result.The present invention can pass through automatic control reality
The accurate detection identification now penetrated, so that electric spark small hole machine tool machined electrode when carrying out perforation processing stretches out workpieces processing
Length becomes controllably, to improve electric spark small hole machine tool processing efficiency and perforation processing success rate.
In step s 201, the voltage-mode analog values and current-mode analog values between machined electrode and workpiece are acquired.
Specifically, the processing conditions to workpiece, control machined electrode action command are arranged by host computer, processing conditions is main
Between polarity, pulsewidth, arteries and veins including the pulse power, the data such as voltage, current peak.The FPGA of control of discharge card receives host computer and sets
Surely the processing conditions instruction issued, and instruct control electric discharge to process to workpiece to be processed according to processing conditions.
In process, after the operating voltage between machined electrode and workpieces processing and electric current are divided by divider resistance
With follow circuit to enter control of discharge card, and control the AD modulus conversion chip Acquisition Circuit on control of discharge card and acquire work in real time
Make voltage and electric current, the voltage-mode analog values and electricity of operating voltage collected and electric current between machined electrode and workpiece
Flow field simulation value.
Step S202 calculates voltage-mode analog values and current-mode analog values based on predetermined power switching strategy, obtains
Working power；
Wherein, predetermined power switching strategy may include:
It controls AD modulus conversion chip and the collected voltage-mode analog values and current-mode analog values is converted into voltage digital
Value and current digital value；Product based on the voltage digital value and the current digital value obtains working power.
Specifically, the operating voltage between machined electrode and workpieces processing and electric current enter after being divided by divider resistance and put
Automatically controlled fabrication, by following circuit to enter AD modulus conversion chip, by the AD analog-digital converter on FPGA control control of discharge card
Voltage-mode analog values and current-mode analog values are handled, to send to after being converted into voltage digital value and current digital value
FPGA calculates the voltage digital value and current digital value that receive by FPGA, i.e., by the voltage digital value and the electricity
Stream digital value is multiplied, and the product based on the two obtains working power.
Step S203, whether detection input voltage value is lower than predeterminated voltage input threshold values, if so, calculating low in discharge process
Discharge voltage duration；
Threshold values and working power threshold values are inputted by predeterminated voltage in FPGA.Predeterminated voltage input threshold values is defeated for judging
Enter whether voltage value is low discharge voltage.The different arteries and veins that predeterminated voltage input threshold values and working power threshold values are set according to host computer
It is set between stopping time, discharge pulse interval setting value is sent to FPGA by host computer.
Detection due to penetrating state will receive the influence of interpulse period, that is, be difficult to differentiate between penetrate generation or it is normal
Pulse spacing state in processing, therefore different low discharge voltage is set between different arteries and veins stopping times for descending according to host computer of FPGA
Duration threshold values, to reduce the possibility of erroneous judgement.
In embodiment of the present invention, low discharge voltage duration is by FPGA internal timer to collected lower than setting voltage
The threshold values moment carries out timing and obtains.By writing Timer Program in FPGA, when AD analog-digital converter is to the voltage analog of acquisition
After value is converted, when detecting that voltage digital value is less than predeterminated voltage input threshold values, illustrates to be currently low discharge voltage, start
Timer starts timing, calculates low discharge voltage duration in discharge process.
Step S204, by the collected working power value, low discharge voltage duration and preset working power threshold values,
Low discharge voltage duration threshold values is matched, and is determined whether to penetrate event according to matching result.
By the collected working power value, low discharge voltage duration and preset working power threshold values, low discharge electricity
The matched matching result of duration threshold values progress is pressed to can be a variety of, such as: 1, working power value is greater than the working power threshold values of setting,
Low discharge voltage duration is greater than the low discharge voltage duration threshold values；2, working power value is greater than the working power threshold values of setting,
Low discharge voltage duration is less than or equal to the low discharge voltage duration threshold values；3, working power value is less than or equal to adding for setting
Work power threshold, low discharge voltage duration are greater than the low discharge voltage duration threshold values；4, working power value is less than or equal to and sets
Fixed working power threshold values, low discharge voltage duration are less than or equal to the low discharge voltage duration threshold values.
When matching result is the first situation, i.e., working power value is greater than the working power threshold values of setting and what is obtained low put
When piezoelectric voltage duration is greater than the low discharge voltage duration threshold values, determination penetrates event, otherwise, it determines not penetrating thing
Part.After completing to penetrate event detection, then penetration-detection signal being generated, FPGA will penetrate signal and be uploaded to port controlling device,
It controls the machined electrode rollback to relocate, completes penetration-detection.
If it is determined that penetrating event, then indicate that servo motor device is complete according to the signal control sending that penetrates that FPGA is sent
It is instructed at the further work of processing.
If it is determined that not penetrating event, then timer is reset, and continue monitoring input voltage value whether be lower than it is default
Voltage input threshold values, and execute above-mentioned steps S203.
Fig. 3 is the structural schematic diagram of the small hole machine tool penetration-detection device of the embodiment of the present invention, as shown in Fig. 3, the present invention
The small hole machine tool penetration-detection device of embodiment, comprising:
Acquisition module 301, for acquiring voltage-mode analog values and current-mode analog values between machined electrode and workpiece；
Computing module 302, based on being carried out to voltage-mode analog values and current-mode analog values by predetermined power switching strategy
It calculates, obtains working power；
Detection module 303, for detecting whether input voltage value is lower than predeterminated voltage input threshold values, if so, calculating electric discharge
Low discharge voltage duration in the process；
Determining module 304 is used for the collected working power value, low discharge voltage duration and preset processing function
Rate threshold values, low discharge voltage duration threshold values are matched, and are determined whether to penetrate event according to matching result.
In one embodiment of the invention, computing module 302 is also used to:
It controls AD modulus conversion chip and the collected voltage-mode analog values and current-mode analog values is converted into voltage digital
Value and current digital value；
Product based on the voltage digital value and the current digital value obtains working power.
In one embodiment of the invention, determining module 304 is also used to:
It grows up when matching result is the low discharge voltage that working power value is greater than preset working power threshold values, and obtains
When the low discharge voltage duration threshold values, determination penetrates event, otherwise, it determines not penetrating event；Wherein, described
It is set between the different arteries and veins stopping times that low discharge voltage duration threshold values is set according to host computer.
In one embodiment of the invention, determining module 304 is also used to:
If it is determined that penetrating event, generation penetrates signal；
It sends and penetrates signal for described, indicate that the further work of servo motor device completion processing refers to control to issue
It enables.
In one embodiment of the invention, determining module 304 is also used to:
The machined electrode rollback is controlled to relocate.
In one embodiment of the invention, detection module 303 is also used to:
If it is determined that not penetrating event, timer is reset, and continues whether monitoring input voltage value is lower than default electricity
Pressure input threshold values.
Fig. 3 shown device of the embodiment of the present invention is the realization device of method shown in Fig. 2 of the embodiment of the present invention, concrete principle
Identical as method shown in Fig. 2 of the embodiment of the present invention, details are not described herein again.
In an embodiment of the invention, a kind of storage medium is also provided, the storage medium storage computer program refers to
It enables, the computer program instructions are executed according to the method for the embodiment of the present invention.
In the present invention one typical configuration, calculating equipment includes one or more processors (CPU), input/defeated
Outgoing interface, network interface and memory.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/
Or the forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable medium
Example.
In an embodiment of the invention, a kind of calculating equipment is also provided, comprising: for storing computer program instructions
Memory and processor for executing computer program instructions, wherein when the computer program instructions are executed by the processor
When, trigger the method for calculating equipment and executing the embodiment of the present invention.
Computer readable storage medium includes permanent and non-permanent, removable and non-removable media, can be by appointing
What method or technique realizes that information stores.Information can be computer readable instructions, data structure, program device or other
Data.The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory
(SRAM), dynamic random access memory (DRAM), other kinds of random access memory (RAM), read-only memory
(ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory techniques, CD-ROM (CD-
ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storages
Equipment or any other non-transmission medium, can be used for storage can be accessed by a computing device information.
It should be noted that the present invention can be carried out in the assembly of software and/or software and hardware, for example, can adopt
With specific integrated circuit (ASIC), general purpose computer or any other realized similar to hardware device.In some embodiments
In, software program of the invention can be executed by processor to realize above step or function.Similarly, software of the invention
Program (including relevant data structure) can be stored in computer readable recording medium, for example, RAM memory, magnetic or
CD-ROM driver or floppy disc and similar devices.In addition, some of the steps or functions of the present invention may be implemented in hardware, for example,
As the circuit cooperated with processor thereby executing each step or function.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included in the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.This
Outside, it is clear that one word of " comprising " does not exclude other units or steps, and odd number is not excluded for plural number.That states in device claim is multiple
Unit or device can also be implemented through software or hardware by a unit or device.The first, the second equal words are used to table
Show title, and does not indicate any particular order.
Claims (10)
1. a kind of small hole machine tool breakthrough detection method, which is characterized in that the method is applied to small hole machine tool penetration-detection device
Programmable logic array FPGA, which comprises
Acquire the voltage-mode analog values and current-mode analog values between machined electrode and workpiece；
Voltage-mode analog values and current-mode analog values are calculated based on predetermined power switching strategy, obtain working power；
Threshold values is inputted lower than predeterminated voltage if detecting input voltage value, calculates low discharge voltage duration in discharge process；
When by the collected working power value, low discharge voltage duration and preset working power threshold values, low discharge voltage
Long threshold values is matched, and is determined whether to penetrate event according to matching result.
2. the method as described in claim 1, which is characterized in that based on predetermined power switching strategy to voltage-mode analog values and electric current
The analogue value is calculated, and working power is obtained, comprising:
Control AD modulus conversion chip by the collected voltage-mode analog values and current-mode analog values be converted to voltage digital value and
Current digital value；
Product based on the voltage digital value and the current digital value obtains working power.
3. the method as described in claim 1, which is characterized in that determined whether to penetrate event according to matching result, comprising:
When matching result is that working power value is greater than preset working power threshold values, and obtained low discharge voltage duration is greater than institute
When stating low discharge voltage duration threshold values, determination penetrates event, otherwise, it determines not penetrating event；Wherein, described low to put
It is set between the different arteries and veins stopping times that piezoelectric voltage duration threshold values is set according to host computer.
4. the method as described in claim 1, which is characterized in that determine whether after penetrating event, the method also includes:
If it is determined that penetrating event, generation penetrates signal；
It sends and penetrates signal for described, to control the further work instruction for issuing instruction servo motor device and completing processing.
5. method as claimed in claim 4, which is characterized in that send by it is described penetrate signal after, the method also includes:
The machined electrode rollback is controlled to relocate.
6. method as claimed in claim 3, which is characterized in that the method also includes:
If it is determined that not penetrating event, timer is reset, and continues monitoring input voltage value whether to be lower than predeterminated voltage defeated
Enter threshold values.
7. a kind of small hole machine tool penetration-detection device, which is characterized in that described device includes:
Acquisition module, for acquiring voltage-mode analog values and current-mode analog values between machined electrode and workpiece；
Computing module is obtained for being calculated based on predetermined power switching strategy voltage-mode analog values and current-mode analog values
Working power；
Detection module, for detecting whether input voltage value is lower than predeterminated voltage input threshold values, if so, calculating low in discharge process
Discharge voltage duration；
Determining module, for stopping the different working power threshold values and low discharge voltage duration of interval time setting according to different arteries and veins
Threshold values, by the working power threshold values, low discharge voltage duration threshold values and the collected working power value, low discharge voltage
Duration is compared, it is determined whether penetrates event.
8. a kind of electric spark small hole machine tool, which is characterized in that the electric spark small hole machine tool includes:
For penetrate to workpiece the machined electrode of processing；
For collection voltages and electric current and the small hole machine tool penetration-detection device of control electric discharge；
Electrical discharge machining control interface, port controlling device, PC bus interface control device, the servo motor for controlling machined electrode
Driving device, the host computer for sending discharging condition and motor movement instructions, the servo motor driving device is in PC control
The instruction lower driving machined electrode carries out small hole machined to workpieces processing.
9. a kind of storage medium, which is characterized in that the storage medium stores computer program instructions, and the computer program refers to
Method according to any one of claim 1 to 6 is enabled to be executed.
10. a kind of calculating equipment characterized by comprising for storing the memory of computer program instructions and for executing
The processor of computer program instructions, wherein when the computer program instructions are executed by the processor, trigger the calculating and set
Method described in any one of standby perform claim requirement 1 to 6.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110695475A (en) * | 2019-10-15 | 2020-01-17 | 东莞台一盈拓科技股份有限公司 | Method for protecting side wall of workpiece of fine hole discharge punching machine |
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| JP2011131285A (en) * | 2009-12-22 | 2011-07-07 | Mitsubishi Electric Corp | Electric discharge machining device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110695475A (en) * | 2019-10-15 | 2020-01-17 | 东莞台一盈拓科技股份有限公司 | Method for protecting side wall of workpiece of fine hole discharge punching machine |
| CN110695475B (en) * | 2019-10-15 | 2020-12-08 | 东莞台一盈拓科技股份有限公司 | Method for protecting side wall of workpiece of fine hole discharge punching machine |
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