CN107175387B - Source of welding current wire feed ripple control method and device - Google Patents
Source of welding current wire feed ripple control method and device Download PDFInfo
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- CN107175387B CN107175387B CN201710389215.0A CN201710389215A CN107175387B CN 107175387 B CN107175387 B CN 107175387B CN 201710389215 A CN201710389215 A CN 201710389215A CN 107175387 B CN107175387 B CN 107175387B
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- 238000000034 method Methods 0.000 title claims abstract description 90
- 238000003466 welding Methods 0.000 title claims abstract description 72
- 230000007423 decrease Effects 0.000 claims abstract description 154
- 230000008569 process Effects 0.000 claims abstract description 55
- 230000004044 response Effects 0.000 abstract description 7
- 238000010891 electric arc Methods 0.000 description 8
- 238000004364 calculation method Methods 0.000 description 6
- 210000001367 artery Anatomy 0.000 description 5
- 210000003462 vein Anatomy 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
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Classifications
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- 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
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/124—Circuits or methods for feeding welding wire
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Abstract
The disclosure provides a kind of source of welding current wire feed ripple control method and device.The source of welding current wire feed ripple control method includes: to give wire feed rate according to wire feed ripple frequency；The wire feed rise time of wire feed uphill process is determined according to the wire feed ripple frequency；And/or wire feed decline process is divided into multistage and carries out wire feed decline control.This programme controls wire feed uphill process and/or wire feed decline process in the case where given wire feed ripple frequency, can shorten wire feed and rise response time and/or wire feed decline response time, to improve welding efficiency.
Description
Technical field
This disclosure relates to welding technology field, in particular to a kind of source of welding current wire feed ripple control method and dress
It sets.
Background technique
The important means as industry manufacture is welded, is played a significant role in economic construction of China all the time.
With progress of the epoch, shared bicycle industry rapid development in nearly 2 years, all rises in each big and medium-sized cities at present
The tide of shared bicycle, bicycle trade are developed rapidly.
Bicycle trade is mainly based on the short weld seam of thin plate scalelike mark at present, and industry competition is fiercer, and producer is to welding
Efficiency requirements are very high.Most of producers all carry out the scalelike mark welding of bicycle portion weld seam using automatic continuous spot welding mode,
The automatic continuous spot welding mode is influenced bigger by external factor:
1, the starting the arc is unstable when series spot welding, causes single solder joint imperfect, influences entire scalelike mark weld seam aesthetic measure.
2, stringenter to starting the arc position and angle requirement when the spot welding starting the arc, excessive be likely to result in of angle collapses silk, influences
Solder joint.
Therefore, it is necessary to a kind of new source of welding current wire feed ripple control method and devices.
It should be noted that information is only used for reinforcing the reason to the background of the disclosure disclosed in above-mentioned background technology part
Solution, therefore may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Summary of the invention
The disclosure is designed to provide a kind of source of welding current wire feed ripple control method and device, and then at least certain
One or more is overcome the problems, such as caused by the limitation and defect due to the relevant technologies in degree.
According to one aspect of the disclosure, a kind of source of welding current wire feed ripple control method is provided, comprising:
Wire feed rate is given according to wire feed ripple frequency；
The wire feed rise time of wire feed uphill process is determined according to the wire feed ripple frequency；And/or
Wire feed decline process is divided into multistage and carries out wire feed decline control.
In a kind of exemplary embodiment of the disclosure, the method also includes: according in rotating speed difference and the wire feed
The liter time determines the wire feed rate of rise.
In a kind of exemplary embodiment of the disclosure, wire feed decline process is divided into multistage and carries out wire feed decline control packet
It includes:
When rotating speed difference is less than preset threshold, wire feed decline process is divided into first segment and second segment carries out wire feed
Decline control；
Wherein first segment wire feed descending slope is greater than second segment wire feed descending slope.
In a kind of exemplary embodiment of the disclosure, when rotating speed difference is less than preset threshold, the wire feed is declined
Process is divided into first segment and second segment progress wire feed decline control includes:
Wire feed, which is obtained, according to the first tachometer value and the wire feed ripple frequency declines inflection point tachometer value；
First segment wire feed fall time and second segment wire feed fall time are obtained according to the wire feed ripple frequency；
According to the second tachometer value, wire feed decline inflection point tachometer value and first segment wire feed fall time acquisition
First segment wire feed descending slope；
Decline inflection point tachometer value, first tachometer value, second segment wire feed fall time acquisition according to the wire feed
The second segment wire feed descending slope.
In a kind of exemplary embodiment of the disclosure, when obtaining the decline of first segment wire feed according to the wire feed ripple frequency
Between and second segment wire feed fall time include:
Wire feed, which is obtained, according to the wire feed ripple frequency declines total time；
Wherein, the first segment wire feed fall time is equal to the first ratio value of wire feed decline total time, and described the
Two sections of wire feed fall times are equal to the second ratio value of wire feed decline total time, first ratio value and second ratio
The sum of example value is equal to 1, and first ratio value is greater than second ratio value.
In a kind of exemplary embodiment of the disclosure, wire feed decline process is divided into multistage and carries out wire feed decline control packet
It includes:
When rotating speed difference is more than or equal to preset threshold, wire feed decline process is divided into first segment, second segment, third
Section and the 4th section of progress wire feed decline control；
Wherein, first segment wire feed descending slope and third section wire feed descending slope are respectively greater than second segment wire feed descending slope
With the 4th section of wire feed descending slope.
In a kind of exemplary embodiment of the disclosure, when rotating speed difference is more than or equal to preset threshold, by the wire feed
Decline process is divided into first segment, second segment, third section and the 4th section of progress wire feed decline control
The first wire feed, which is obtained, according to the rotating speed difference, the wire feed ripple frequency, the first tachometer value declines inflection point revolving speed
Value, the second wire feed decline inflection point tachometer value and third wire feed decline inflection point tachometer value；
It is obtained under first segment wire feed fall time, second segment wire feed according to the wire feed ripple frequency and the rotating speed difference
Time, third section wire feed fall time and the 4th section of wire feed fall time drop；
It is obtained according to the second tachometer value, first wire feed decline inflection point tachometer value and the first segment wire feed fall time
The first segment wire feed descending slope；
Decline inflection point tachometer value, third wire feed decline inflection point tachometer value and the third section according to second wire feed
Wire feed fall time obtains the third section wire feed descending slope；
Decline inflection point tachometer value, second wire feed decline inflection point tachometer value and the second segment according to first wire feed
Wire feed fall time obtains the second segment wire feed descending slope；
Decline inflection point tachometer value, first tachometer value and the 4th section of wire feed fall time according to the third wire feed
Obtain the 4th section of wire feed descending slope.
In a kind of exemplary embodiment of the disclosure, according to the rotating speed difference, the wire feed ripple frequency, first turn
Speed value obtains the first wire feed decline inflection point tachometer value, the second wire feed decline inflection point tachometer value and third wire feed and declines inflection point tachometer value
Include:
Second wire feed, which is obtained, according to the rotating speed difference declines inflection point tachometer value；
Decline inflection point tachometer value according to second wire feed and the wire feed ripple frequency obtains the first wire feed decline
Inflection point tachometer value；
The third wire feed, which is obtained, according to first tachometer value and the wire feed ripple frequency declines inflection point tachometer value.
In a kind of exemplary embodiment of the disclosure, the is obtained according to the wire feed ripple frequency and the rotating speed difference
One section of wire feed fall time, second segment wire feed fall time, third section wire feed fall time and the 4th section of wire feed fall time packet
It includes:
Determine that wire feed declines total time according to the wire feed ripple frequency and the rotating speed difference；
Wherein, the first segment wire feed fall time and the third section wire feed fall time are equal to the wire feed decline
The first ratio value of total time, the second segment wire feed fall time are equal to the second ratio value of wire feed decline total time,
The 4th section of wire feed fall time is equal to the third ratio value of wire feed decline total time, and first ratio value is greater than institute
Third ratio value is stated, the third ratio value is greater than second ratio value.
According to one aspect of the disclosure, a kind of source of welding current wire feed ripple control device is provided, comprising:
Ripple frequency gives module, for giving wire feed rate according to wire feed ripple frequency；
Wire feed rises control module, when for determining that the wire feed of wire feed uphill process rises according to the wire feed ripple frequency
Between；And/or
Wire feed declines control module, carries out wire feed decline control for wire feed decline process to be divided into multistage.
Source of welding current wire feed ripple control method and device in disclosure some embodiments, on the one hand, pass through wire feed arteries and veins
Dynamic control can weld out the weld seam of beautiful appearance；On the other hand, by wire feed uphill process and/or wire feed decline process into
Row control can reduce wire feed and rise response time and/or wire feed decline response time, to improve welding efficiency.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The disclosure can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure
Example, and together with specification for explaining the principles of this disclosure.It should be evident that the accompanying drawings in the following description is only the disclosure
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 schematically shows the process of one of disclosure example embodiment source of welding current wire feed ripple control method
Figure.
Fig. 2 schematically shows the signal of one of disclosure example embodiment source of welding current wire feed ripple control method
Figure.
Fig. 3 schematically shows the frame of one of disclosure example embodiment source of welding current wire feed ripple control device
Figure.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to example set forth herein；On the contrary, thesing embodiments are provided so that the disclosure will more
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Described feature, knot
Structure or characteristic can be incorporated in any suitable manner in one or more embodiments.In the following description, it provides perhaps
More details fully understand embodiment of the present disclosure to provide.It will be appreciated, however, by one skilled in the art that can
It is omitted with technical solution of the disclosure one or more in the specific detail, or others side can be used
Method, constituent element, device, step etc..In other cases, be not shown in detail or describe known solution to avoid a presumptuous guest usurps the role of the host and
So that all aspects of this disclosure thicken.
In addition, attached drawing is only the schematic illustrations of the disclosure, it is not necessarily drawn to scale.Identical attached drawing mark in figure
Note indicates same or similar part, thus will omit repetition thereof.Some block diagrams shown in the drawings are function
Energy entity, not necessarily must be corresponding with physically or logically independent entity.These function can be realized using software form
Energy entity, or these functional entitys are realized in one or more hardware modules or integrated circuit, or at heterogeneous networks and/or place
These functional entitys are realized in reason device device and/or microcontroller device.
It requires to convey welding wire to electric arc in various welding methods.Weldering is conveyed by the way of pulsation in the embodiment of the present invention
Silk.In pulsed wire feeding, the movement of welding wire is regular speed variation, can form the welding bead of regularity, while energy in this way
Heat input is reduced, many technologic benefits are brought.
Fig. 1 schematically shows the process of one of disclosure example embodiment source of welding current wire feed ripple control method
Figure.The source of welding current system containing pulsed wire feeding realizes the synchronization modulation of pulsed wire feeding and weldingvoltage.The source of welding current can be through
Cable is connect with sliver carrying box, and sliver carrying box is connect by wire leading pipe with welding gun.
The source of welding current wire feed ripple control method of the embodiment of the present invention can be applied to the wire feed control of consumable electrode.Because
Usually only consumable electrode just has wire feed control.One end fusing point of electrode is low, and filling metal is done in fusing in the welding process, such as
The welding rod of common welding electrode arc welding forms electric arc in welding between welding rod and base material, release high temperature melting welding rod and base material shape
At weld seam, electrode end is exactly consumable electrode.One end fusing point of electrode is high, cannot melt in the welding process, such as tungsten argon arc
Weldering, it makes one end of electrode of tungsten, forms electric arc between tungsten electrode end and base material when welding, releases high temperature melting base material and feeding
Metal in electric arc forms weld seam, and tungsten is non-fusible in the welding process, and tungsten end is exactly non-melt pole.
As shown in Figure 1, the source of welding current wire feed ripple control method may comprise steps of.
In step s 110, wire feed rate is given according to wire feed ripple frequency P.
In the step s 120, the wire feed rise time T of wire feed uphill process is determined according to the wire feed ripple frequency PRise。
In the exemplary embodiment, the method can also include: according to rotating speed difference and the wire feed rise time TRise
Determine wire feed rate of rise SRise.Rotating speed difference described here refers to high tachometer value VIt is highWith slow-speed of revolution value VIt is lowDifference.
In the exemplary embodiment, wire feed rises control and can be determined according to wire feed rising control parameter: according to wire feed arteries and veins
Dynamic frequency P determines wire feed rise time TRise, calculation formula can be as follows:
TRise=aP2+bP+c
Wherein a, b, c are constant in above-mentioned formula, can be determined according to experiment real data, can be by the side tabled look-up
Formula obtains.In one embodiment, a=5, b=-38, c=95 can be taken, but it's not limited to that for the disclosure.Work as ripple frequency
When P is 1Hz, T can be calculated according to above-mentioned formulaRiseAs shown from the above formula, the value of b takes negative, wire feed arteries and veins to about 62ms
Dynamic frequency P is higher, rise time TRiseIt is shorter.In some embodiments, in order to make welding effect more preferable, wire feed ripple frequency P is not
Preferably it is too high or too low, generally can value range be 0.5Hz -5Hz.
It in the exemplary embodiment, can be according to high and low rotating speed difference (VIt is high-VIt is low) and wire feed rise time TRiseDetermine wire feed
Rate of rise SRise, calculation formula can be as follows:
SRise=(VIt is high-VIt is low)/TRise
The embodiment of the present invention can shorten wire feed rise time T by controlling wire feed uphill processRise, raising send
Silk rate of rise SRise, and then greatly improve wire feed and rise response speed.
In step s 130, wire feed decline process is divided into multistage and carries out wire feed decline control.
It should be noted that the execution sequence of above-mentioned steps S120 and step S130 can first carry out step S120 and execute again
Step S130 can also first carry out step S130 and execute step S120 again, and in the source of welding current wire feed ripple control method
The step that can choose in two steps executes, and also can choose circulation in order and executes two steps.
In the exemplary embodiment, wire feed decline process is divided into multistage to carry out wire feed decline control may include: to work as to turn
When speed difference value is less than preset threshold, wire feed decline process is divided into first segment and second segment carries out wire feed decline control；Its
Middle first segment wire feed descending slope is greater than second segment wire feed descending slope.
In the following examples, it is assumed that the preset threshold is 100 revs/min.But it's not limited to that for the disclosure.
It should be noted that, although in above-described embodiment, when the rotating speed difference is less than the preset threshold, by institute
It states for wire feed decline process is divided into two sections and is illustrated, but it's not limited to that for the disclosure, in other embodiments,
Wire feed decline process control can be carried out to it using more multistage.
It is described below with reference to Fig. 2.
In the embodiment of the present invention, wire feed has decline control, and such as rotating speed difference is less than when high and low rotating speed difference is smaller
At 100 revs/min, the process that wire feed can be declined is divided into 2 sections: the decline control of first segment S1 slope, i.e. wire feed accelerate decline control,
S1 descending slope is big, can effectively shorten wire feed fall time.Second segment S2 slope decline control, S2 slope over 10 compared to S1 compared with
It is slow, spatter when wire feed pulsation switches can be effectively reduced and prevent wire feed overshoot.
In the exemplary embodiment, when rotating speed difference is less than preset threshold, wire feed decline process is divided into first
It may include: according to the first tachometer value (such as slow-speed of revolution value V that section and second segment, which carry out wire feed decline control,It is low) and the wire feed arteries and veins
Dynamic frequency P obtains wire feed and declines inflection point tachometer value VD1。
In the embodiment of the present invention, wire feed decline inflection point D1 can be determined in the following manner:
Pass through preset slow-speed of revolution value VIt is lowDetermine that wire feed declines inflection point D1 with wire feed ripple frequency P, wherein wire feed declines inflection point
Tachometer value VD1It can be obtained by following calculation formula:
VD1=VIt is low+20/P
By above formula it is found that slow-speed of revolution value VIt is lowSmaller, then wire feed decline inflection point D1 is smaller, and ripple frequency P is higher, send
Silk decline inflection point D1 is smaller.
In the exemplary embodiment, when rotating speed difference is less than preset threshold, wire feed decline process is divided into first
It may include: to obtain first segment wire feed fall time according to the wire feed ripple frequency that section and second segment, which carry out wire feed decline control,
With second segment wire feed fall time.
In the exemplary embodiment, when rotating speed difference is less than preset threshold, wire feed decline process is divided into first
It may include: according to the second tachometer value (such as high tachometer value V that section and second segment, which carry out wire feed decline control,It is high), under the wire feed
Inflection point tachometer value V dropsD1With the first segment wire feed fall time TDecline S1Obtain the first segment wire feed descending slope LS1。
In the embodiment of the present invention, wire feed declines S1 slope over 10 LS1It can determine in the following manner:
According to high tachometer value VIt is high, wire feed decline inflection point tachometer value VD1, first segment wire feed fall time TDecline S1, determine first
Section wire feed descending slope LS1, calculation formula can be as follows:
LS1=(VIt is high-VD1)/TDecline S1
In the embodiment of the present invention, in the welding process, wire feed rate and voltage must be matched, when wire feed is pulsed and is switched,
To guarantee welding stability, weldingvoltage waveform is also according to first segment wire feed descending slope LS1Declined.
In the exemplary embodiment, when rotating speed difference is less than preset threshold, wire feed decline process is divided into first
Section and second segment carry out wire feed decline control may include: according to the wire feed decline inflection point tachometer value, first tachometer value,
The second segment wire feed fall time obtains the second segment wire feed descending slope.
In the embodiment of the present invention, wire feed declines S2 slope over 10 LS2It can determine in the following manner:
Decline inflection point tachometer value V according to wire feedD1, slow-speed of revolution value VIt is low, S2 sections of wire feed fall time TDecline S2, determine second segment
Wire feed descending slope LS2, calculation formula can be as follows:
LS2=(VD1-VIt is low)/TDecline S2
In the embodiment of the present invention, S2 sections of main functions are: if wire feed is with LS1(steep drop) descending slope is directly entered the slow-speed of revolution
Welding, will cause electric arc it is unstable caused by collapse a current interruption phenomenon, and wire feed may overshoot.And pass through in the embodiment of the present invention
It is added S2 section (slow drop) during wire feed decline, the stability of electric arc when can effectively improve decline, prevents and collapse silk and break
Arc phenomenon, and prevent wire feed overshoot.
In the exemplary embodiment, first segment wire feed fall time is obtained according to the wire feed ripple frequency and second segment is sent
Silk fall time may include: to obtain wire feed decline total time according to the wire feed ripple frequency；Wherein, the first segment wire feed
Fall time is equal to the first ratio value of wire feed decline total time, and the second segment wire feed fall time is equal to the wire feed
Decline the second ratio value of total time, the sum of first ratio value and second ratio value are equal to 1, first ratio value
Greater than second ratio value.
In the embodiment of the present invention, it can determine that wire feed declines S1 sections, S2 sections of time T in the following mannerDecline S1、TDecline S2Really
It is fixed:
Fall time T is determined according to wire feed ripple frequency PDecline, calculation formula can be as follows:
TDecline=cP2+eP+d
Wherein c, e, d are constant, can be determined, can also be obtained by lookup table mode according to actual experiment data.One
In embodiment, c=4, e=-35, d=114, but it's not limited to that for the disclosure.When wire feed ripple frequency P is 1Hz, according to
T can be calculated in above-mentioned formulaDeclineAbout 83ms.
In the embodiment of the present invention, wire feed fall time TDeclineWith bound:
TDecline minimum value≤TDecline≤TDecline maximum value
It in one embodiment, can be with value TDecline minimum value=40ms, TDecline maximum value=120ms, but it's not limited to that for the disclosure.
In the embodiment of the present invention, T can be obtained according to experimentDecline S1=60%TDecline；TDecline S2=40%TDecline.But the disclosure
It's not limited to that, can select corresponding ratio value according to practical application scene.
In the exemplary embodiment, wire feed decline process is divided into multistage to carry out wire feed decline control may include: to work as to turn
When speed difference value is more than or equal to preset threshold, by wire feed decline process be divided into first segment, second segment, third section and the 4th section into
The decline control of row wire feed；Wherein, first segment wire feed descending slope and third section wire feed descending slope are respectively greater than second segment wire feed
Descending slope and the 4th section of wire feed descending slope.
In the embodiment of the present invention, wire feed has decline control, and such as rotating speed difference is greater than when high and low rotating speed difference is larger
When equal to 100 revs/min, if wire feed decline is using 2 sections of controls, S1 descending slope is excessive, and fall time is too long, necessarily will cause
Voltage follow is poor, causes electric arc unstable, influences welding effect.It therefore, can be by wire feed when high and low rotating speed difference is larger
Decline process is divided into 4 sections of controls: S1, S3 sections of wire feeds accelerate decline control, and wherein S1, S3 sections of descending slopes are big, substantially increase
Wire feed declines response speed, can effectively shorten wire feed fall time.The slow drop control of S2, S4 sections of wire feeds: S2, S4 sections of descending slopes
Smaller, the duration is short.In the embodiment of the present invention when high and low rotating speed difference is larger, wire feed decline process is controlled using 4 sections
Effect is: wire feed introduces slow S2, S4 sections of the drop of wire feed of short period, guarantees voltage follow after S1, S3 sections of experience steep drops,
It can effectively prevent splashing simultaneously and generate and prevent wire feed overshoot.
It should be noted that, although being declined in above-described embodiment when high and low rotating speed difference is larger with 4 sections of control wire feeds
It is illustrated for journey, but it's not limited to that for the disclosure, in other embodiments, can select according to actual needs
Suitable segments carries out the control of wire feed decline process.
In the exemplary embodiment, when rotating speed difference is more than or equal to preset threshold, wire feed decline process is divided into
First segment, second segment, third section and the 4th section of progress wire feed decline control may include: according to the rotating speed difference (VIt is high-VIt is low)、
The wire feed ripple frequency P, the first tachometer value (such as slow-speed of revolution value VIt is low) obtain the first wire feed decline inflection point tachometer value VD1, second
Wire feed declines inflection point tachometer value VD2Decline inflection point tachometer value V with third wire feedD3；According to the wire feed ripple frequency P and described turn
Speed difference value (VIt is high-VIt is low) obtain first segment wire feed fall time TDecline S1, second segment wire feed fall time TDecline S2, under third section wire feed
Time T dropsDecline S3With the 4th section of wire feed fall time TDecline S4；According to the second tachometer value (such as high tachometer value VIt is high), described first give
Silk decline inflection point tachometer value VD1With the first segment wire feed fall time TDecline S1Obtain the first segment wire feed descending slope LS1；
Decline inflection point tachometer value V according to second wire feedD2, the third wire feed decline inflection point tachometer value VD3It is sent with the third section
Silk fall time TDecline S3Obtain the third section wire feed descending slope LS3。
In the embodiment of the present invention, S1 sections and S3 sections of wire feed descending slope LS1、LS3(steep drop can be determined in the following manner
Slope):
S1 sections of wire feed descending slope LS1: according to high tachometer value VIt is high, the first wire feed decline inflection point tachometer value VD1, first segment send
Silk fall time TDecline S1, obtain LS1:
LS1=(VIt is high-VD1)/TDecline S1
S3 sections of wire feed descending slope LS3: according to inflection point D2 tachometer value VD2, inflection point D3 tachometer value VD3, the decline of third section wire feed
Time TDecline S3, obtain LS3:
LS3=(VD2-VD3)/TDecline S3
In the embodiment of the present invention, LS1、LS3Slope is big, substantially increases wire feed decline response speed.In the welding process,
To guarantee welding stability, weldingvoltage waveform is also according to LS1、LS3Slope is declined.
In the exemplary embodiment, when rotating speed difference is more than or equal to preset threshold, wire feed decline process is divided into
First segment, second segment, third section and the 4th section of progress wire feed decline control may include: to decline inflection point according to first wire feed
Tachometer value, second wire feed decline inflection point tachometer value and the second segment wire feed fall time obtain under the second segment wire feed
Drop angle rate；Decline inflection point tachometer value, first tachometer value and the 4th section of wire feed fall time according to the third wire feed
Obtain the 4th section of wire feed descending slope.
In the embodiment of the present invention, S2 sections and S4 sections of wire feed descending slope LS2、LS4(slow drop can be determined in the following manner
Slope):
LS2=(VD1-VD2)/TDecline S2
LS4=(VD3-VIt is low)/T declines S4
S2, S4 sections of main functions are: after S1 and S3 accelerates steep drop, introducing the slow drop section of S2, S4, can effectively improve decline
When electric arc stability, prevent and collapse a current interruption phenomenon, and prevent wire feed overshoot.
In the exemplary embodiment, first is obtained according to the rotating speed difference, the wire feed ripple frequency, the first tachometer value
It may include: root that wire feed, which declines inflection point tachometer value, the second wire feed decline inflection point tachometer value and third wire feed decline inflection point tachometer value,
Second wire feed, which is obtained, according to the rotating speed difference declines inflection point tachometer value；According to second wire feed decline inflection point tachometer value and
The wire feed ripple frequency obtains first wire feed and declines inflection point tachometer value；According to first tachometer value and the wire feed arteries and veins
Dynamic frequency obtains the third wire feed and declines inflection point tachometer value.
In the embodiment of the present invention, decline inflection point D1, D2, D3 can be determined in the following manner:
Average V is taken according to high and low rotating speed differenceIt is average:
VIt is average=(VIt is high–VIt is low)/2
Then inflection point D2 tachometer value is obtained:
VD2=VIt is low+VIt is average
Inflection point D1 tachometer value can obtain according to the following formula:
VD1=VD2+10/P
Inflection point D3 tachometer value can obtain according to the following formula:
VD3=VIt is low+20/P
In the exemplary embodiment, the decline of first segment wire feed is obtained according to the wire feed ripple frequency and the rotating speed difference
Time, second segment wire feed fall time, third section wire feed fall time and the 4th section of wire feed fall time may include: according to institute
It states wire feed ripple frequency and the rotating speed difference determines that wire feed declines total time；Wherein, the first segment wire feed fall time and
The third section wire feed fall time is equal to the first ratio value of the wire feed decline total time, the second segment wire feed decline
Time is equal to the second ratio value of wire feed decline total time, and the 4th section of wire feed fall time declines equal to the wire feed
The third ratio value of total time, first ratio value are greater than the third ratio value, and the third ratio value is greater than described the
Two ratio values.
In the embodiment of the present invention, S1 sections and S3 sections of wire feed fall time TDecline S1、TDecline S3Can in the following manner really
It is fixed:
Determine that wire feed declines total time T according to wire feed ripple frequency P, high and low rotating speed differenceDecline total time:
TDecline total time=TDecline+TCompensation
In above-mentioned formula, TDeclineIt is determined according to wire feed ripple frequency P, such as TDecline=cP2+eP+d；TCompensationIt is poor in high and low rotating speed
When value is greater than 100 revs/min, to guarantee that arc stability wire feed declines total time increased offset.TCompensationValue size can be according to looking into
Table obtains, and rotating speed difference more large compensation value is bigger.
Such as: when high and low rotating speed difference >=120 rev/min: TCompensation=5ms；When high and low rotating speed difference >=150 rev/min:
TCompensation=10ms；When high and low rotating speed difference >=180 rev/min: TCompensation=15ms；When high and low rotating speed difference >=200 rev/min: TCompensation
=20ms etc..But it's not limited to that for the disclosure.
In the embodiment of the present invention, TDecline S1=TDecline S3=35%TDecline total time；TDecline S2=10%TDecline total time；TDecline S4=20%
TDecline total time.But it's not limited to that for the disclosure.
The source of welding current wire feed ripple control mode that embodiment of the present invention provides, on the one hand, pass through wire feed ripple control
It realizes continuous welding, can effectively avoid the series spot welding starting the arc from collapsing silk and cause solder joint uneven and the inaesthetic problem of weld seam, it can be with
It is applied to scalelike mark welding (but it's not limited to that for the disclosure), beautiful appearance can be welded out by wire feed ripple control
Scalelike mark weld seam；On the other hand, by controlling wire feed decline and/or uphill process, it can be greatly improved welding
Efficiency also reduces the heat input in welding process to a certain extent.
Fig. 2 schematically shows the signal of one of disclosure example embodiment source of welding current wire feed ripple control method
Figure.As shown in Fig. 2, showing the wire feed pulsating waveform figure of four kinds of situations.Wherein, the ordinate in diagram is tachometer value, unit
It is RPM (rev/min)；Horizontal axis is chronomere, and unit is ms.
The first figure in Fig. 2 is ideal wire feed waveform, carries out pulsatile change according to fixed frequency wire feed rate.It is assumed that
Wire feed ripple frequency P=1/ (500ms+500ms)=1Hz.
When the second figure in Fig. 2 is that no wire feed rises control and declines control without wire feed, wire feed fall time 400ms is sent
Silk rise time 150ms.
In the prior art, wire feed rate can be pulsed according to fixed frequency by DSP given, but actual test waveform is such as
The second figure (no decline rises control wire feed waveform) in Fig. 2, although preset is given according to fixed frequency wire feed rate size
, but due to not having wire feed decline control, wire feed is longer from high speed to low speed conversion time.Turn from the slow-speed of revolution to height in wire feed
When fast, due to not having wire feed to rise control, wire feed slowly rises, and the wire feed rise time is long.
Third figure in Fig. 2 is to have wire feed to rise control and have wire feed decline control and high and low rotating speed difference hour, wire feed
Decline control is divided to two sections of S1 and S2, inflection point D1, and the sum of first segment wire feed fall time and second segment wire feed fall time are wire feed
Decline and total time is less than 400ms；Wire feed rise time 62ms is less than 150ms.
The 4th figure in Fig. 2 is wire feed when having wire feed to rise control and having wire feed decline control and big high and low rotating speed difference
Decline control point four sections of S1, S2, S3 and S4, inflection point D1, D2 and D3, wire feed, which declines, total time is less than 400ms；The wire feed rise time
62ms is less than 150ms.
Fig. 3 schematically shows the frame of one of disclosure example embodiment source of welding current wire feed ripple control device
Figure.
As shown in figure 3, the source of welding current wire feed ripple control device 100 may include that ripple frequency gives module 110, send
Silk rises control module 120 and/or wire feed declines control module 130.
Wherein, ripple frequency gives module 110 and can be used for giving wire feed rate according to wire feed ripple frequency.
Wire feed, which rises control module 120, can be used for determining the wire feed of wire feed uphill process according to the wire feed ripple frequency
Rise time.
Wire feed decline control module 130 can be used for for wire feed decline process being divided into multistage and carry out wire feed decline control.
The specific implementation details of each module is in corresponding welding electricity in above-mentioned source of welding current wire feed ripple control device
It is described in detail in the wire feed ripple control method of source, therefore details are not described herein again.
It should be noted that although being referred to several modules or list for acting the equipment executed in the above detailed description
Member, but this division is not enforceable.In fact, according to embodiment of the present disclosure, it is above-described two or more
Module or the feature and function of unit can embody in a module or unit.Conversely, an above-described mould
The feature and function of block or unit can be to be embodied by multiple modules or unit with further division.
In addition, although describing each step of method in the disclosure in the accompanying drawings with particular order, this does not really want
These steps must be executed in this particular order by asking or implying, or having to carry out step shown in whole could realize
Desired result.Additional or alternative, it is convenient to omit multiple steps are merged into a step and executed by certain steps, and/
Or a step is decomposed into execution of multiple steps etc..
Through the above description of the embodiments, those skilled in the art is it can be readily appreciated that example described herein is implemented
Mode can also be realized by software realization in such a way that software is in conjunction with necessary hardware.Therefore, according to the disclosure
The technical solution of embodiment can be embodied in the form of software products, which can store non-volatile at one
Property storage medium (can be CD-ROM, USB flash disk, mobile hard disk etc.) in or network on, including some instructions are so that a calculating
Equipment (can be personal computer, server, mobile terminal or network equipment etc.) is executed according to disclosure embodiment
Method.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the disclosure
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principles of this disclosure and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by appended
Claim is pointed out.
Claims (9)
1. a kind of source of welding current wire feed ripple control method, which is characterized in that the source of welding current includes pulsed wire feeding system, institute
The method of stating includes:
Wire feed rate is given according to wire feed ripple frequency；
The wire feed rise time of wire feed uphill process is determined according to the wire feed ripple frequency；With
Wire feed decline process is divided into multistage and carries out wire feed decline control；
Wire feed decline process, which is divided into multistage progress wire feed decline control, includes:
When rotating speed difference is less than preset threshold, wire feed decline process is divided into first segment and second segment carries out wire feed decline
Control；
Wherein first segment wire feed descending slope is greater than second segment wire feed descending slope；The rotating speed difference is the pulsed wire feeding system
Difference between the second tachometer value and the first tachometer value of system.
2. source of welding current wire feed ripple control method according to claim 1, which is characterized in that the method also includes:
The wire feed rate of rise is determined according to the rotating speed difference and the wire feed rise time.
3. source of welding current wire feed ripple control method according to claim 1, which is characterized in that when rotating speed difference is less than in advance
If when threshold value, wire feed decline process being divided into first segment and second segment progress wire feed decline control includes:
Wire feed, which is obtained, according to first tachometer value and the wire feed ripple frequency declines inflection point tachometer value；
First segment wire feed fall time and second segment wire feed fall time are obtained according to the wire feed ripple frequency；
According to second tachometer value, wire feed decline inflection point tachometer value and first segment wire feed fall time acquisition
First segment wire feed descending slope；
According to wire feed decline inflection point tachometer value, first tachometer value, second segment wire feed fall time acquisition
Second segment wire feed descending slope.
4. source of welding current wire feed ripple control method according to claim 3, which is characterized in that pulsed according to the wire feed
Frequency obtains first segment wire feed fall time and second segment wire feed fall time includes:
Wire feed, which is obtained, according to the wire feed ripple frequency declines total time；
Wherein, the first segment wire feed fall time is equal to the first ratio value of wire feed decline total time, the second segment
Wire feed fall time is equal to the second ratio value of wire feed decline total time, first ratio value and second ratio value
The sum of be equal to 1, first ratio value be greater than second ratio value.
5. source of welding current wire feed ripple control method according to claim 1, which is characterized in that by wire feed decline process point
Carrying out wire feed decline control for multistage includes:
When the rotating speed difference is more than or equal to preset threshold, wire feed decline process is divided into first segment, second segment, third
Section and the 4th section of progress wire feed decline control；
Wherein, first segment wire feed descending slope and third section wire feed descending slope are respectively greater than second segment wire feed descending slope and
Four sections of wire feed descending slopes.
6. source of welding current wire feed ripple control method according to claim 5, which is characterized in that when the rotating speed difference is big
When being equal to preset threshold, wire feed decline process is divided under first segment, second segment, third section and the 4th section of progress wire feed
Drop controls
The first wire feed decline inflection point tachometer value, the are obtained according to the rotating speed difference, the wire feed ripple frequency, the first tachometer value
Two wire feeds decline inflection point tachometer value and third wire feed declines inflection point tachometer value；
When obtaining first segment wire feed fall time, the decline of second segment wire feed according to the wire feed ripple frequency and the rotating speed difference
Between, third section wire feed fall time and the 4th section of wire feed fall time；
It is obtained according to second tachometer value, first wire feed decline inflection point tachometer value and the first segment wire feed fall time
The first segment wire feed descending slope；
Decline inflection point tachometer value, third wire feed decline inflection point tachometer value and the third section wire feed according to second wire feed
Fall time obtains the third section wire feed descending slope；
Decline inflection point tachometer value, second wire feed decline inflection point tachometer value and the second segment wire feed according to first wire feed
Fall time obtains the second segment wire feed descending slope；
Decline inflection point tachometer value, first tachometer value and the 4th section of wire feed fall time acquisition according to the third wire feed
The 4th section of wire feed descending slope.
7. source of welding current wire feed ripple control method according to claim 6, which is characterized in that according to the rotational speed difference
Value, the wire feed ripple frequency, the first tachometer value obtain the first wire feed decline inflection point tachometer value, the second wire feed declines inflection point revolving speed
Value and third wire feed decline inflection point tachometer value include:
Second wire feed, which is obtained, according to the rotating speed difference declines inflection point tachometer value；
Decline inflection point tachometer value according to second wire feed and the wire feed ripple frequency obtains first wire feed and declines inflection point
Tachometer value；
The third wire feed, which is obtained, according to first tachometer value and the wire feed ripple frequency declines inflection point tachometer value.
8. source of welding current wire feed ripple control method according to claim 6, which is characterized in that pulsed according to the wire feed
When frequency and the rotating speed difference obtain first segment wire feed fall time, second segment wire feed fall time, the decline of third section wire feed
Between and the 4th section of wire feed fall time include:
Determine that wire feed declines total time according to the wire feed ripple frequency and the rotating speed difference；
Wherein, the first segment wire feed fall time and the third section wire feed fall time be equal to wire feed decline it is total when
Between the first ratio value, the second segment wire feed fall time be equal to the wire feed decline total time the second ratio value, it is described
4th section of wire feed fall time is equal to the third ratio value of wire feed decline total time, and first ratio value is greater than described the
Three ratio values, the third ratio value are greater than second ratio value.
9. a kind of source of welding current wire feed ripple control device, which is characterized in that the source of welding current includes pulsed wire feeding system, institute
Stating device includes:
Ripple frequency gives module, for giving wire feed rate according to wire feed ripple frequency；
Wire feed rises control module, for determining the wire feed rise time of wire feed uphill process according to the wire feed ripple frequency；
With
Wire feed declines control module, carries out wire feed decline control for wire feed decline process to be divided into multistage；
The wire feed decline control module is configured that when rotating speed difference is less than preset threshold, by wire feed decline process point
Wire feed decline control is carried out for first segment and second segment；
Wherein first segment wire feed descending slope is greater than second segment wire feed descending slope；The rotating speed difference is the pulsed wire feeding system
Difference between the second tachometer value and the first tachometer value of system.
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| CN1803369A (en) * | 2005-01-13 | 2006-07-19 | 株式会社大亨 | Arc start control method for AC arc welding |
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| JP2012170958A (en) * | 2011-02-18 | 2012-09-10 | Daihen Corp | Two-wire welding control method |
| CN102770229A (en) * | 2010-02-23 | 2012-11-07 | 伊利诺斯工具制品有限公司 | Welding system with wire feed speed reference variable frequency pulse |
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|---|---|---|---|---|
| CN1803369A (en) * | 2005-01-13 | 2006-07-19 | 株式会社大亨 | Arc start control method for AC arc welding |
| CN101352781A (en) * | 2007-07-23 | 2009-01-28 | 株式会社大亨 | Pulse arc welding method |
| CN101590557A (en) * | 2008-05-26 | 2009-12-02 | 株式会社大亨 | The feed control method of consumable electrode arc welding |
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| CN102770229A (en) * | 2010-02-23 | 2012-11-07 | 伊利诺斯工具制品有限公司 | Welding system with wire feed speed reference variable frequency pulse |
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