CN104959704B - Numerical control electric welding machine - Google Patents
Numerical control electric welding machine Download PDFInfo
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- CN104959704B CN104959704B CN201510428133.3A CN201510428133A CN104959704B CN 104959704 B CN104959704 B CN 104959704B CN 201510428133 A CN201510428133 A CN 201510428133A CN 104959704 B CN104959704 B CN 104959704B
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- arc
- welding machine
- electric welding
- starting
- computer
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
- B23K9/067—Starting the arc
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
Abstract
Numerical control electric welding machine, this with bright be electric welding machine technology a field.Thin-wall workpiece easily burns and is because that the heat that electric arc is produced is relatively excessive, a process for making thin-wall part local be completely melt and drop.The technical problem of thin-wall workpiece is easily burnt for solving electric welding machine, this invention takes following technical measures：Starting the arc detection means connects computer, computer connection welder power control circuit or starting the arc detection means connection timing means, and timing means connects welder power control circuit；Benefit of the invention is that：The working condition of electric welding machine is detected by starting the arc detection means, using computer timing.When the arcing time user predetermined time is reached, computer or timing means export the instruction of a closing source of welding current, can thus reach the duration of control arc burning, overcome the technical deficiency that electric welding machine under prior art easily burns thin-wall workpiece.
Description
Technical field
The present invention is a field of electric welding machine technology.
Background technology
Electricity consumption welder thin-wall workpiece is the pith of electric welding machine routine work.During welding thin wall work-piece, typically
For, as workpiece ability of being heated easily is burnt, so welder can only be controlled with short arcing time with the mode of spot welding
Arc energy processed, reduces the probability of burn-through as far as possible.In welding process, welding rod firm starting the arc during welding, thin-wall workpiece due to thin, such as
Fruit welder can not detach workpiece current interruption welding rod in time, just easily workpiece be burnt.But if current interruption is too early, and easily produces empty
The problems such as weldering.So the key of spot welding is weld interval（The time of arc burning）Must support and hold, neither could burn and
Can weld.But, as the time of spot welding is extremely short（Generally less than 1 second）Within the so short time, people be it is difficult to compare duration
Implement accurate time control, so usually weldment is burnt during welding thin wall work-piece, therefore, what welder most had a headache is exactly to weld
Connect thin-wall workpiece.
For tackling this problem, under the prior art, welder only adjusts to obtain very little the output current of welding machine, with small current
To exchange the long period for, in order to implement control.So, although the situation for burning workpiece slightly improves, but brings
New problem, is exactly the difficult and welding rod easily adhesion workpiece etc. of the starting the arc.Its reason is the maximum portable electric welding of the amount of generally using
Machine, is that reduces cost employs simple structure, and the mode for changing welding current is to change output voltage.Voltage has been reduced
Arc is just difficult, the embarrassment of workpiece while welding rod easily sticks together.On the other hand, even if being reduction of output current, at this
In the case of kind, the thing of welder's burn-through workpiece is still very universal.It can be seen that this measure produces little effect but also pros and cons offset, even
More harm than good, indented material is still greatly improved space.
Content of the invention
During electric welding, easily burn thin-wall workpiece and be because that the heat of electric arc generation is relatively excessive, exceeded what thin-wall part was not worn
Thermal capacitance, a process for making weld local be completely melt and drop.This problem is solved, as long as electric welding machine can be controlled each
The energy output of the secondary starting the arc, that is, control its heat produced by starting the arc each time.The energy of control electric arc, except can pass through
Control welding current to realize by the time of control arc burning outside realizing.Therefore, it is that solution electric welding machine is easy
The technical problem of thin-wall workpiece is burnt, this invention takes following technical measures：Starting the arc detection means connects computer, computer
Connection welder power control circuit, or starting the arc detection means connection timing means, timing means connection welder power control
Circuit.
Benefit of the invention is that：The working condition of electric welding machine is detected by starting the arc detection means（Whether the starting the arc）, in electric welding
When machine enters normal starting the arc work, using computer or timing means timing.When the arcing time, to reach user predetermined
During the time, the signal of computer or timing means one closing electric welding machine source of welding current of output（That is blow-out signal）Electromechanical to electric welding
Source control circuit, closes the out-put supply of electric welding machine, and so as to reach the duration of precise control arc burning, and then it is every to reach control
The energy output that once welds and the purpose of its quantity of heat production.When overcoming electric welding machine welding thin wall work-piece under prior art,
Reduce output current and control arc burning duration by rule of thumb by artificial, easily burn the technical deficiency of thin-wall workpiece.Subtract significantly
The little probability for burning thin wall work-piece.On the other hand, the quantity of heat production of electric welding machine spot welding each time is that welding current is fired with electric arc
The product of burning time.After the present invention, the time of arc burning can realize precise control, and such welding current just can be by
The normal direction firm beneficial to the starting the arc and welding is configured.This with bright the carrying out for greatly facilitating welding job and improves weldering
Connect quality.
As this programme employs the Numeric Control Technology of computer, enable starting the arc duration precisely controlled, thus can
While overcoming electric welding machine voltage can only be turned in the past down to reduce a variety of deficiencies for burning that probability is brought.
Specific embodiment
Three kinds of states are generally divided into after electric welding machine start work, are exactly unloaded, arc-welding（The starting the arc, electric arc start burning）, short
Road.Zero load is exactly that electric welding machine is in armed state, at this moment the output voltage highest of electric welding machine, and output current is zero.Arc-welding is electricity
The state of welding machine normal work.At this moment electric welding machine output voltage less than floating voltage again be higher than short-circuit voltage and export appropriate
Welding current, electric welding machine at this moment are in normal welded condition.Short circuit, is that electric welding machine starts striking or welding rod adhesion work occurs
Extreme case during part.The output voltage of electric welding machine at this moment is close to zero, and electric current is far longer than electric current during normal weld（Electricity
Stream is maximum）.To detection electric welding machine, whether the starting the arc brings foundation and provides conveniently these states.
Starting the arc detection means described herein, refer to electric welding when, be able to detect that electric arc formed all photoelectricity or
Electromechanical assembly.Starting the arc detection means can detect whether electric welding machine enters normal welded condition from many aspects（The starting the arc）.For example
The starting the arc can be judged whether by arc light.In position（Arc light irradiates the position for obtaining, such as soldering turret etc.）Photoelectricity is installed
Sensor, by detect arc light just can direct detection go out electric arc generation whether；Judge whether that the starting the arc can also be according to electric welding machine
On electric parameter change come judge electric welding machine work whether in the state of the starting the arc.When starting the arc detection means detects electric welding
The output end of machine has rational electric current（More than no-load current, less than short circuit current or in the range of setting）, it is possible to judge
The normal starting the arc of electric welding machine；While when the output end that starting the arc detection means detects electric welding machine has rational voltage（Less than unloaded electricity
Pressure, more than short-circuit voltage or in the range of setting）The electric welding machine normally starting the arc equally may determine that.Can certainly examine simultaneously
Survey electric welding machine output end voltage and current as whether the foundation of the starting the arc.
Starting the arc detection means described herein has various ways and various structures.For example, can be straight in terms of detection electric current
Connect the electric current of measurement electric welding machine output end, it is also possible to by detecting the electricity of the input of welder power input or inverter circuit
Stream is inferring the modes such as the electric current of output end.The metering system of electric current is equally diversified.For example, it is possible to by resistance come
Measure, can be measured by current transformer etc..All methods for measuring electric current include directly and indirectly own
Method, is suitable for present invention use.
Welder power control circuit described herein, refers to control electric welding machine weldering by computer or timing means
Connect all control circuits of power supply output.The form of the structure of welder power control circuit have varied, can by meter
All control circuits of calculation machine or timing means control electric welding machine source of welding current output are suitable for present invention use.Welder power
Control circuit has different power control circuits in different electric welding machines.For example in inversion welding machine, welder power control
Circuit processed can be itself of inverter circuit.When wanting blow-out（Output is controlled）When, computer or timing means output one
Individual command signal（0 or 1 level signal）The generation of control inverter signal or transmission, it is possible to control the output of inverter circuit,
Control work or the closing of the circuit, realize vulnerabilities scan forceful electric power.The power supply of electric welding machine thus can be easily controlled to export,
Reach the purpose of blow-out；When electric welding machine is for ac arc wedling machine, welder power control circuit can be main by a relay
Device or the control circuit of bidirectional triode thyristor composition.When blow-out is wanted, computer or timing means export a command signal（0 or 1
Level signal）The release of control relay or two-way controlled shutoff, so that it may the source of welding current of electric welding machine is cut off, then can
To reach the purpose of blow-out.While this example circuit is suitable for all types of electric welding machines.
The technical problem of thin-wall workpiece is easily burnt for solving electric welding machine, this invention takes following technical measures：The starting the arc
Detection means connects computer, and computer connects welder power control circuit, or starting the arc detection means connection timing means, fixed
When device connection welder power control circuit；When user will weld thin wall work-piece, fill in computer or timing first
Put as needed（The thickness of workpiece）Arcing time is set, then can just be started working.When starting the arc detection means is detected
When having lighted electric arc between welding rod and workpiece, it is sent to computer or timing means signal at once.Computer or timing means
Start timing after receiving signal.When the timing of computer or timing means reaches predetermined value, just to welder power control electricity
Road sends blow-out command signal.Welder power control circuit is switched off transporting to the power supply of welding rod and workpiece after receiving signal, puts out
Go out electric arc.The burning time of precise control electric arc so can be achieved with, equivalent to the power consumption for controlling this solder joint and heat production
Measure so as to prevent arc energy excessive and burn the generation of the accident of workpiece.
The time delay regular hour, where welding rod of this time mainly to welder on hand leaves and weld, aim at new
Position to be welded required for time.After the blow-out time delay regular hour, blow-out instruction cancelled by computer or timing means, allows electricity
The output armed state back to normal of welding machine.The work of so welding can just continue cycling through welding and go on.As long as weldering
Connect set of time proper, the present invention can be welded it on the premise of thin-wall workpiece is not burnt, and overcome prior art not
Foot.
Claims (1)
1. numerical control electric welding machine, mainly includes starting the arc detection means, welder power control circuit, it is characterised in that：The starting the arc is detected
Device connects computer, and computer connects welder power control circuit；Or starting the arc detection means connection timing means, timing dress
Put connection welder power control circuit；Described welder power control circuit, referring to can be by computer or timing means
All control circuits of control electric welding machine source of welding current output；Described starting the arc detection means refers to, in electric welding, to detect
The all photoelectricity formed to electric arc or electromechanical assembly；The working condition of electric welding machine is detected by starting the arc detection means, in electric welding machine
When entering the normal starting the arc and working, using computer or timing means timing, when the arcing time reach user predetermined when
Between when, computer or timing means export the signal of a closing electric welding machine source of welding current and arrive welder power control circuit, pass
The out-put supply of electric welding machine is closed, so as to the duration of precise control arc burning is reached, is disappeared equivalent to the electric energy for controlling this solder joint
Consumption and quantity of heat production burn the generation of the accident of workpiece so as to prevent arc energy excessive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510428133.3A CN104959704B (en) | 2015-07-15 | 2015-07-15 | Numerical control electric welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510428133.3A CN104959704B (en) | 2015-07-15 | 2015-07-15 | Numerical control electric welding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104959704A CN104959704A (en) | 2015-10-07 |
| CN104959704B true CN104959704B (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510428133.3A Expired - Fee Related CN104959704B (en) | 2015-07-15 | 2015-07-15 | Numerical control electric welding machine |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104259630A (en) * | 2014-09-16 | 2015-01-07 | 中国电子科技集团公司第二十研究所 | Welding method and welding system of angle measuring antenna |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61147972A (en) * | 1984-12-19 | 1986-07-05 | Matsushita Electric Ind Co Ltd | Power source for consumable electrode type welding |
| JP3078245B2 (en) * | 1997-08-06 | 2000-08-21 | 松下電器産業株式会社 | Arc start assist device |
| CN100534692C (en) * | 2007-12-13 | 2009-09-02 | 上海交通大学 | Gas protected tungsten pole argon arc welding automatic controlled system adapter |
| JP2012066288A (en) * | 2010-09-24 | 2012-04-05 | Fanuc Ltd | Arc welding method reducing occurrence of spatter at time of arc start |
| WO2012162585A2 (en) * | 2011-05-26 | 2012-11-29 | Thermal Dynamics Corporation | Improved initiation of welding arc by restricting output |
| US9162309B2 (en) * | 2012-07-27 | 2015-10-20 | Illinois Tool Works Inc. | Welder generator electrode based engine speed control |
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2015
- 2015-07-15 CN CN201510428133.3A patent/CN104959704B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104259630A (en) * | 2014-09-16 | 2015-01-07 | 中国电子科技集团公司第二十研究所 | Welding method and welding system of angle measuring antenna |
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| CN104959704A (en) | 2015-10-07 |
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Effective date of registration: 20210319 Address after: 102200 423, 4 / F, block a, Xinhua future city building, 175 Litang Road, Changping District, Beijing Patentee after: Li Qiannan Address before: 523051 No.6, South 1st lane, Fenxi 3rd road, liuyongwei, Wanjiang District, Dongguan City, Guangdong Province Patentee before: Hu Daguang |
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Effective date of registration: 20211203 Address after: 271039 East New Area, Taishan District, Tai'an City, Shandong Province Patentee after: SHANDONG TAIKAI INVESTMENT CASTING CO.,LTD. Address before: 102200 423, 4 / F, block a, Xinhua future city building, 175 Litang Road, Changping District, Beijing Patentee before: Li Qiannan |
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Granted publication date: 20170308 |