CN106289608B - A kind of device and method measuring welding arc axial force - Google Patents
A kind of device and method measuring welding arc axial force Download PDFInfo
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- CN106289608B CN106289608B CN201610626094.2A CN201610626094A CN106289608B CN 106289608 B CN106289608 B CN 106289608B CN 201610626094 A CN201610626094 A CN 201610626094A CN 106289608 B CN106289608 B CN 106289608B
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- insulation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- General Physics & Mathematics (AREA)
- Arc Welding Control (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a kind of devices measuring welding arc axial force, it includes conductive plate, insulation board, conductive column, power sensing part, conductive sheet, the power that insulate sensing gasket and electronic scale, wherein, the insulation board is set to below the conductive plate, it is close therewith to completely attach to, the upper end of the conductive column is connect with the conductive plate, lower end is connect with insulation power sensing gasket, the conductive sheet passes through the lower end of the conductive column to be set in the slot of the insulation power sensor mat on piece, the upper end of the power sensing part is closely connect with the insulation board, lower end is closely connect with insulation power sensing gasket, the electronic scale is set to the lower section of the insulation power sensing gasket.The device, which overcomes conventional u-shaped pipe, which surveys electric arc force method, does not have the shortcomings that molten bath, overcome the unseparated disadvantage of load cell method arc force electric current, realize the separation of electric arc axial force and electric current, both ensured that electric current did not leaked, in turn ensure that electric current does not generate interference to the transmission of axial force, power measurement error greatly reduces.
Description
Technical field
The present invention relates to welding arc power fields of measurement, in particular to a kind of dress measuring welding arc axial force
It sets and method.
Background technology
In welding process, satisfied welding point, ensures the quality of connection of weldment, welding arc physics analysis in order to obtain
The direction of always numerous scholar's researchs, the wherein measurement of electric arc axial force is also an important ring.
Currently used electric arc axial force measuration method has：U-tube mensuration utilizes the principle dynamometry of pressure, still,
It does not form molten bath, so what is measured is plasma jet motive force and is not electric arc axial force；Another common electric arc
Axial force measuration method is to use load cell, measures, although the method intuitively measures electric arc axial force, its
The not channel of separating force and electric current, in the measurement of welding arc axial force, the random conduction of welding current can be to measuring
Device generates interference and measurement error occurs.Therefore, to the measurement of welding arc force, the welding current of interference is not generated how
Stabilization is dredged as the big problem in measurement process.
Invention content
In order to solve the above technical problems, the present invention provides a kind of device measuring welding arc axial force, which is surveying
During amount, the separation of arc force and electric current is realized, the interference for effectively avoiding welding current from generating, measurement effect is good, error
It is low.
The technical solution adopted by the present invention：
A kind of device measuring welding arc axial force comprising conductive plate, insulation board, conductive column, power sensing part are conductive
Piece, insulation power sensing gasket and electronic scale, wherein the insulation board is set to below the conductive plate, close therewith to completely attach to,
The upper end of the conductive column is connect with the conductive plate, and lower end is connect with insulation power sensing gasket, and the conductive sheet passes through
The lower end of the conductive column is set in the slot of the insulation power sensor mat on piece, upper end and the insulation board of the power sensing part
Close connection, lower end are closely connect with insulation power sensing gasket, and the electronic scale is set to the insulation power sensing gasket
Lower section.
Device as described above, it is preferable that the conductive plate is rectangular, and the conductive column is four, is evenly distributed on institute
State the quadrangle of conductive plate.
Device as described above, it is preferable that the conductive sheet is equipped with connector, is used for connecting welding power supply.
Device as described above, it is preferable that the conductive plate, insulation board, power sensing part, insulation power sensing gasket and electronics
The geometric center of scale is on a vertical line.
Device as described above, it is preferable that the electronic scale is that Cont rol Method of Precise Force measures electronic scale or accurately electronic scale.
Device as described above, it is preferable that the power sensing part is solid homogeneous body.
A method of welding arc axial force is measured, using the as described above device for measuring welding arc axial force,
Specific steps include：
1) required tested weldment is stably placed to the top of the conductive plate；
2) connecting welding power supply, positive and negative polarities connect shape with the welding gun above the conductive sheet and the conductive plate respectively
At closed circuit, the welding gun is directed at the weldment and adjusts suitable welding parameter；
3) source of welding current is opened, electric arc starts to burn, while the registration of the electronic scale is recorded using recording apparatus,
It waits for that the arc stability burns, when the registration of the electronic scale is stablized, stops measuring, close the source of welding current；
4) registration of the stabilization period for the electronic scale that the recording apparatus is recorded is the final reading of electric arc axial force
Number, the unit of the electric arc axial force measuration result is in terms of mN.
Method as described above, it is preferred that in the step 1), the solder joint of the weldment is made to be passed with the insulation power
The center for feeling gasket overlaps.
The device of the invention, which overcomes conventional u-shaped pipe, which surveys electric arc force method, does not have the shortcomings that molten bath, overcomes load cell
The unseparated disadvantage of method arc force electric current, realizes the separation of electric arc axial force and electric current, both ensure that electric current does not leak, and
It ensure that electric current does not generate interference to the transmission of axial force, power measurement error greatly reduces.Measurement welding electricity using the present invention
The data stability of the method for arc axial force, measurement is good, reproducible, safety；Effectively eliminate cable, measurement structure etc. by
The influence that Thermal Cycle influences generated expansion and shrinks.
Description of the drawings
Fig. 1 is the structural schematic diagram of one embodiment of the present invention.
Fig. 2 is the vertical view of Fig. 1 in the embodiment of the present invention 1.
Fig. 3 is the front view of Fig. 1 in the embodiment of the present invention 1.
Fig. 4 is solder joint setting figure in measurement method of the present invention.
Fig. 5 is the result figure of the change curve of arc force-pulse frequency.
Specific implementation mode
Illustrate method of the present invention with reference to the accompanying drawings and examples.It is to be understood that these embodiments are used only for
Illustrate the present invention, and and be not in any way limit the scope of the present invention.
Embodiment 1 measures the device of welding arc axial force
A kind of device measuring welding arc axial force comprising conductive plate, insulation board, conductive column, power sensing part are conductive
Piece, insulation power sensing gasket and electronic scale, wherein insulation board is placed in the lower section of conductive plate, and is closely completely attached to conductive plate,
The upper end of conductive column is connect with conductive plate, and lower end is connect with insulation power sensing gasket, and conductive sheet passes through the lower end of conductive column to be set to
In the slot of the power that insulate sensing gasket, the upper end of power sensing part is closely connect with insulation board, and lower end and insulation power sensing gasket are close
Connection, electronic scale are set to the lower section of insulation power sensing gasket.
Specifically, as shown in Figure 1, conductive plate 3 is set as rectangular, four angles are uniformly arranged there are four hole, insulation board 4 with it is conductive
Plate 3 sets that size is consistent, and four angles are also uniformly distributed four holes, is closely completely attached to conductive plate 3.
Conductive column 5A is set as four, is evenly distributed on the quadrangle of conductive plate 3, and the upper end of conductive column 5A passes through screw and conduction
Plate 3 connects, and lower end is connected by screw with the conductive sheet 7 in insulation spacer 8, and insulation board 4 is terminated on power sensing part 6, under
Termination insulation power senses gasket 8.9 supports insulative power of electronic scale senses gasket 8.Electronic scale be preferably Cont rol Method of Precise Force measure electronic scale or
Accurately electronic scale.Preferably, solid homogeneous body can be selected in power sensing part.
Conductive sheet 7 is set as square frame structure, is set in centre there are two there is connector, if Fig. 2 center taps are 11 and 12, connector
For connecting welding power supply.
In order to ensure to measure accuracy, conductive plate 3, insulation board 4, power sensing part 6, insulation power sensing gasket 8 and electronic scale 9
Geometric center to ensure on same vertical line.
When measurement, as shown in figure 3, weldment 2, i.e., be placed on by weldering base material on conductive plate 3, welding gun 1 is set to the upper of weldment 2
Side generates between welding gun 1 and weldment 2 and stablizes tested electric arc, wherein the conduction of welding current：Welding gun 1 generates stabilization with weldment 2
Electric arc, welding current are uniformly distributed to four corners by conductive plate 3, and conductive sheet 7 is transferred to via the conductive column 5A at four angles,
It eventually passes back to welding anode and forms closed circuit.
Weld the conduction of axial force：Tested axial force is transferred to Force sensor 6 by conductive plate 3 and insulation board 4, via
Insulation power sensing gasket 8 reaches Cont rol Method of Precise Force and measures electronic scale and show reading, waits for stable reading, is measured.
The device of the invention has detached arc power and electric current, excludes the interference of electric current, can directly acquire power, realizes that electric arc is axial
The separation of power and electric current had both ensured that electric current did not leaked, and in turn ensured that electric current does not generate interference to the transmission of axial force, power, which measures, to be missed
Difference greatly reduces.And U-tube mensuration in the prior art, what it is using the measurement of U-tube mensuration is pressure, is not power, and
In measurement process, welding pool is not formed, it is inaccurate.
The method that embodiment 2 measures welding arc axial force
Using the device (as shown in Figure 1) described in embodiment 1 for measuring welding arc axial force, it is axial to carry out welding arc
When the measurement of power, specific steps include：
1) required tested weldment 2 is stably placed to the top of conductive plate 3；
2) connecting welding power supply, positive and negative polarities have the welding gun of 3 top of connector and conductive plate with two of conductive sheet 7 respectively
1 connection forms closed circuit, and welding gun 1 is directed at weldment 2 and adjusts suitable welding parameter；
3) source of welding current is opened, electric arc starts to burn, while using the registration of recording apparatus record electronic scale 9, waiting for the electricity
Arc stablizes burning, when the registration of electronic scale 9 is stablized, stops measuring, closes the source of welding current；
4) registration of the stabilization period for the electronic scale 9 that the recording apparatus is recorded is the final reading of electric arc axial force,
The unit of the electric arc axial force measuration result is in terms of mN.
Specifically, being measured using the Ti-6Al-4V titanium alloy plates of 5mm thickness as weldment 2 is surveyed, with apart from weldment 2
The Distance positioning on workpiece boundary acquires reference point, as shown in figure 4, taking d1=1.5mm, i.e., solder joint point a is apart from weldment side
1.5mm；D2=4.2mm, i.e. solder joint point b are 4.2mm apart from weldment side；D3=10mm, i.e. solder joint point c is apart from weldment side
4.2mm also just says that point b is that solder joint is overlapped with the center for the power sensing gasket 8 that insulate, and arteries and veins is measured using arc force as shown in Table 1
The welding parameter of current parameters is rushed, the measurement of welding arc axial force is carried out.
1 arc force pulsed current measurement parameter of table
Measurement result is as shown in Figure 5, the results showed that point b (i.e. solder joint is overlapped with the center of insulation power sensing gasket) is measured and tied
Fruit stability, repeatability are best.It is (average with C-GTAW using the characterization that arc force changes as average arc power at point b
0.273 gram force) it compares, under the conditions of 60A average currents, arc force increases 30% or more within the scope of 5kHz~10kHz, with
The increase of pulse frequency, arc force further increases, and maximum value (average 0.497 gram force) is reached in 40kHz, is increased
82.1%.Illustrate that the measurement result that solder joint is overlapped with the center for the power sensing gasket that insulate is more acurrate, and data stability is good, repeats
Property good, safety, entirely eliminated expansion and the shadow shunk caused by the influenced by weld thermal cycle such as cable, measurement structure
It rings.
Surveying electric arc force method the present invention overcomes conventional u-shaped pipe does not have the shortcomings that molten bath, overcomes load cell method electric arc
The unseparated disadvantage of power electric current.The separation of electric arc axial force and electric current is realized, both ensure that electric current did not leaked in this way, Er Qiebao
It has demonstrate,proved electric current and interference has not been generated to the transmission of axial force, power measurement error greatly reduces.
Claims (8)
1. a kind of device measuring welding arc axial force, which is characterized in that it includes conductive plate, insulation board, conductive column, power biography
Feel part, conductive sheet, insulation power sensing gasket and electronic scale, wherein the insulation board is set to below the conductive plate, therewith closely
It completely attaches to, the upper end of the conductive column is connect with the conductive plate, and lower end is connect with insulation power sensing gasket, described to lead
Electric piece passes through the lower end of the conductive column to be set in the slot of the insulation power sensor mat on piece, the upper end of the power sensing part and institute
It states insulation board closely to connect, lower end is closely connect with insulation power sensing gasket, and the electronic scale is passed set on the insulation power
Feel the lower section of gasket.
2. device as described in claim 1, which is characterized in that the conductive plate is rectangular, and the conductive column is four, uniformly
It is distributed in the quadrangle of the conductive plate.
3. device as described in claim 1, which is characterized in that the conductive sheet is equipped with connector, is used for connecting welding power supply.
4. device as described in claim 1, which is characterized in that the conductive plate, insulation board, power sensing part, insulation power sensing
The geometric center of gasket and electronic scale is on a vertical line.
5. device as described in claim 1, which is characterized in that the electronic scale is that Cont rol Method of Precise Force measures electronic scale or accurately electric
Sub- scale.
6. device as described in claim 1, which is characterized in that the power sensing part is solid homogeneous body.
7. a kind of method measuring welding arc axial force, which is characterized in that using the survey as described in claim 1 or 6 is any
The device of welding arc axial force is measured, specific steps include：
1) required tested weldment is stably placed to the top of the conductive plate；
2) connecting welding power supply, positive and negative polarities connect to be formed and close with the welding gun above the conductive sheet and the conductive plate respectively
Circuit is closed, the welding gun is directed at the tested weldment and adjusts suitable welding parameter；
3) source of welding current is opened, electric arc starts to burn, while the registration of the electronic scale is recorded using recording apparatus, waits for this
Arc stability burns, and when the registration of the electronic scale is stablized, stops measuring, closes the source of welding current；
4) registration of the stabilization period for the electronic scale that the recording apparatus is recorded is the final reading of electric arc axial force, should
The unit of electric arc axial force measuration result is in terms of mN.
8. the method for claim 7, which is characterized in that in the step 1), the solder joint of the tested weldment is made to want
The center for sensing gasket with the insulation power overlaps.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610626094.2A CN106289608B (en) | 2016-08-02 | 2016-08-02 | A kind of device and method measuring welding arc axial force |
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| CN201610626094.2A CN106289608B (en) | 2016-08-02 | 2016-08-02 | A kind of device and method measuring welding arc axial force |
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| CN106289608B true CN106289608B (en) | 2018-11-13 |
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| CN110666316B (en) * | 2019-09-30 | 2022-02-08 | 佛山科学技术学院 | Movable welding arc force real-time measuring device |
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