CN108098113A - High-frequency impulse control formula electric arc robot increasing material manufacturing method - Google Patents
High-frequency impulse control formula electric arc robot increasing material manufacturing method Download PDFInfo
- Publication number
- CN108098113A CN108098113A CN201711464288.8A CN201711464288A CN108098113A CN 108098113 A CN108098113 A CN 108098113A CN 201711464288 A CN201711464288 A CN 201711464288A CN 108098113 A CN108098113 A CN 108098113A
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- China
- Prior art keywords
- electric arc
- frequency
- increasing material
- material manufacturing
- welding gun
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
- B23K9/042—Built-up welding on planar surfaces
-
- 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
- B23K9/09—Arrangements or circuits for arc welding with pulsed current or voltage
Abstract
The invention belongs to fuse deposition rapid forming technical fields, specifically provide a kind of high-frequency impulse control formula electric arc robot increasing material manufacturing method.The system includes：Workbench；Wire feeder；High frequency pulse power supply；Welding gun；Controller；Source of the gas；Nozzle.The electric current provided using high frequency pulse power supply generates high-frequency impulse electric arc, and controller guiding welding gun is moved on workbench, is processed what part manufactured using electric arc robot.In manufacturing process, the shaping of workpiece carrys out supplying material without the use of special supplying material distributor, has saved production cost by wire feeder molten metal welding wire.And high-frequency impulse electric arc is concentrated with energy, the characteristics of formed precision is high, improves the efficiency of increasing material manufacturing.
Description
Technical field
The present invention relates to fuse deposition rapid forming technical field more particularly to a kind of high-frequency impulse control formula electric arc machines
People's increasing material manufacturing method.
Background technology
In increases material manufacturing technology field, presently, there are metal increasing material manufacturing method, mainly non-melt pole increasing material system
Method is made, i.e., using laser beam, electron beam, plasma or ion beam as heat source, is sintered using powder melts, such as selective laser deposition
(sintering), electron beam constituency melt；It is stacked with using metal wire material melting, such as electron beam fuse forming technique.However these sides
Method production part, all there are form error it is big the problems such as, and these methods due to processing when there is no supporting surface that can cause to deform,
Be not suitable for the manufacture of thin-walled cylinder.
Fuse forming technique is mainly used in thermoplastic material, is mainly characterized by being protected instead of laser with liquefier
Half flowing moulding material is held just on solidification point, is normally controlled in 1 DEG C higher than setting temperature or so, it is fast rapid-result convenient for cooling down
Type.In the present invention, for unformed part is avoided to melt damage by new molten bath, using processing from level to level, while process multiple
The method of part reprocesses next layer, until machining after first part is cooled to suitable temperature.
106064273 A of patent CN disclose a kind of compound increasing material manufacturing method of electron beam, are to utilize the compound increasing of electron beam
Material manufacturing equipment is processed part manufacture.This method can also realize the processing and manufacturing of thin-walled workpiece, but this method needs
Vacuum environment is provided, costly, and production efficiency is than relatively low for equipment.
The content of the invention
In view of this, in order to overcome the problems, such as prior art the defects of and, the present invention provides a kind of high-frequency impulse control formula electricity
Arc robot increasing material manufacturing method.
A kind of high-frequency impulse control formula electric arc robot increasing material manufacturing method, including the following steps：
S1：Individual-layer data after the sliced layered shaping of Three-dimensional Entity Components illustraton of model is imported in control system, control
System calculates the path that each layer of electric arc will walk in working face according to individual-layer data；
S2：Source of the gas preflow 0.5s, arcing time 0.1s, fade time 0.2s, then electric arc enter stable state, control
System processed is according to the movement of command speed control welding gun, the road that the high-frequency impulse electric arc that welding gun generates is made to be specified according to individual-layer data
Footpath and speed movement, while welding gun melts welding wire using the high-frequency pulse current specified, and is accumulated in designated position, while controls and be
System control wire feeder enters melt region according to specified speed conveying welding wire；
S3：Control system controls welding gun by the position vertical-lifting of welding gun, then carries out next layer molten according to step S2
Melt accumulation, until part accumulation is completed；
S4：After S3 steps are completed, complete the sedimentary pile poststack of workpiece, stop the movement of welding gun, be carried out at the same time blow-out and
Stop the wire feed of wire feeder, by the fade time of 0.1s, carry out receipts arc, the time is 0.5 second；
S5：After S4 steps are completed, source of the gas stops conveying protection gas after 0.5s is postponed, and welding gun is moved to the peace set
After all positon, the increasing material manufacturing of high-frequency impulse control formula electric arc robot is completed.
In a better embodiment of the invention, the first of the increasing material manufacturing method accumulation of high-frequency impulse control formula electric arc robot
Layer carries out on corresponding substrate.
In a better embodiment of the invention, workbench has slewing equipment, can be rotated around central point.
In a better embodiment of the invention, pulse current may be up to 10000Hz.
In a better embodiment of the invention, wire melting increases material, is not required to supplying material distributor and vacuum environment.
In a better embodiment of the invention, protection gas is argon gas.
In a better embodiment of the invention, the electric arc of generation is compression arc, can improve and increase melting in material forming process
Efficiency and precision are applied, improves Forming Quality.
In a better embodiment of the invention, high frequency pulse power supply can controlled according to the requirement of Workpiece structure and size
Frequency and pulsewidth, the heat distribution for controlling electric arc and the heat input to workpiece are adjusted on panel processed, and then is precisely controlled and increases material process.
In a better embodiment of the invention, high frequency pulse power supply can controlled according to the requirement of Workpiece structure and size
Frequency and pulsewidth, the heat distribution for controlling electric arc and the heat input to workpiece are adjusted on panel processed, and then is precisely controlled and increases material process：
For large-scale workpiece, it is necessary to increase molten wide, enhance efficiency, concrete operations are：First, pulsewidth frequency modulation rate, i.e. pulse voltage width are determined
It is constant, increase switching frequency, increase output voltage；2nd, determine frequency tune pulsewidth, keep pulse frequency constant, increase pulsewidth
Than increasing output current；3rd, mixing is adjusted, and frequency modulation rate and tune pulsewidth are combined；For miniature workpiece, then grasped on the contrary
Make, achieve the purpose that be precisely controlled increasing material.
In a better embodiment of the invention, it is molded suitable for the increasing material of thin-wall barrel.
In a better embodiment of the invention, there is protection gas source of the gas, avoid the oxidation of molten metal during increasing material.
In an of the invention better embodiment, forming process is environmentally safe, be molded the material used it is generally nontoxic,
Tasteless metal material.
The present invention has remarkable advantage compared with the prior art：
1st, the electromagnetic energy that high-frequency impulse electric arc robot device of the invention has high-frequency impulse electric arc is concentrated, small electricity
The features such as arc stability during stream, electric arc efficiency of thermal transfer height combine with fuse forming technique, and having filled up original technology can only
Blank applied to thermal plastic material.
2nd, the present invention has filled up general increasing material forming technique and may not apply to the thin-walled cylinder increasing molding blank of material.
3rd, high-frequency impulse electric arc of the invention is easily controllable so that this test method formed precision is high.
Description of the drawings
The high-frequency impulse that Fig. 1 is provided by a preferred embodiment of the present invention control formula electric arc robot increasing material manufacturing method profit
The schematic diagram of equipment；
Fig. 2 is that the high-frequency impulse that a preferred embodiment of the present invention provides controls formula electric arc robot increasing material manufacturing method to carry out
The part pictorial diagram of increasing material manufacturing.
Specific embodiment
The present invention provides a kind of high-frequency impulse electric arc robot increasing material manufacturing method, mainly utilizes high frequency as shown in Figure 1
Pulsed arc robot device is manufactured, and high-frequency impulse electric arc robot device includes：Welding wire, wire feeder protect gas, high
The frequency pulse power, switch board, controller, robot body, workbench and industrial personal computer.
Welding wire, that is, consumable electrode increases the supplying material needed for material shaping, and composition can be adjusted according to forming requirements, if
Corresponding welding parameter is put, diameter can also be adjusted according to the condition of welding.
Wire feeder is arranged on robot body, and for the conveying of welding wire, wire feed rate is controlled by control system.
Protection gas and wire feeder are fixed at the nozzle of robot body together, in same position, play protection weldering
Silk is not oxidized after being melted down.Preferably, it is argon gas to protect gas.
High frequency pulse power supply is connected with robot body, and high-frequency pulse current, frequency and arteries and veins are provided for electric arc robot
Width can be adjusted according to the molding demand of material is increased, and the heat distribution for controlling electric arc and the heat input to workpiece are precisely controlled increasing
Material forming process.
The control system of switch board and controller composition welding robot, switch board are connected with robot body, control machine
Device people movement locus in the welding process and speed.Controller can manually set the process of movement, external can also import
Pre-set parameter.
Robot body connects various pieces, becomes a complete system.Robot body used herein
For six-joint robot, the shaping of complex parts can be met.
Workbench on-fixed structure can set rational revolving platform according to specific requirement, convenient for the shaping of complex parts,
It needs with switch board to be connected during slewing equipment, the movement of revolving platform is set by controller.
Industrial personal computer is connected with workbench and control system, according to the situation of workbench by Three-dimensional Entity Components illustraton of model through cutting
Individual-layer data after piece layered shaping is imported in control system, and control system calculates each layer of electric arc in work according to individual-layer data
Make the path in face, then electric arc robot is controlled to walk on defined path.
The electromagnetic energy that high-frequency impulse electric arc robot device has high-frequency impulse electric arc is concentrated, and electric arc is steady during low current
Fixed, the features such as electric arc efficiency of thermal transfer height combine with fuse forming technique, have filled up original technology and can be only applied to thermoplastic
Expect the blank of material.High-frequency impulse electric arc is selected in the species of electric arc, having filled up general increasing material forming technique cannot apply
In the blank of thin-walled cylinder.And high-frequency impulse electric arc it is easily controllable the characteristics of favourable item is also provided for molding precision
Part.
High-frequency impulse control formula electric arc robot increasing material manufacturing method provided by the invention, specifically includes following several steps
Suddenly：
S1：Individual-layer data after the sliced layered shaping of Three-dimensional Entity Components illustraton of model is imported in control system, control
System calculates the path that each layer of electric arc will walk in working face according to individual-layer data；
At this moment, it will be apparent that workbench is ready for pre-processing, and cleaning is moved to designated position to the standard of formulation；Welding gun
It is moved to initial space position；The welding wire of wire feeder has been filled with finishing.
S2：Source of the gas preflow 0.5s, arcing time 0.1s, fade time 0.2s, then electric arc enter stable state, control
System processed is according to the movement of command speed control welding gun, the road that the high-frequency impulse electric arc that welding gun generates is made to be specified according to individual-layer data
Footpath and speed movement, pulse current may be up to 10000Hz, while welding gun melts welding wire using the high-frequency pulse current specified,
Designated position is accumulated, while control system control wire feeder enters melt region according to specified speed conveying welding wire；
At this time gas is protected also to protect molten bath by the flow velocity specified, make molten metal not oxidation by air, arrange welding process
Issuable a little splashing.
S3：Control system controls welding gun by the position vertical-lifting of welding gun, then carries out next layer molten according to step S2
Melt accumulation, until part accumulation is completed；
The promotion of welding gun is that the time of metal cooled and solidified is considered in order to which next layer of accumulation is prepared, and can move welding gun
Workbench separately a few place designated positions do first layer increasing material shaping, be then back to the increasing material manufacturing for doing the second layer.
S4：After S3 steps are completed, complete the sedimentary pile poststack of workpiece, stop the movement of welding gun, be carried out at the same time blow-out and
Stop the wire feed of wire feeder, by the fade time of 0.1s, carry out receipts arc, the time is 0.5 second；
S5：After S4 steps are completed, source of the gas stops conveying protection gas after 0.5s is postponed, and welding gun is moved to the peace set
After all positon, the increasing material manufacturing of high-frequency impulse control formula electric arc robot is completed.
It will be apparent that this two step of S4 and S5 is step necessary to each blow-out, not after the completion of the shaping of Dan Zhizeng materials.
High frequency pulse power supply can adjust frequency and pulsewidth according to the requirement of Workpiece structure and size, control the heat of electric arc
Distribution and the heat input to workpiece, and then be precisely controlled and increase material process：
For large-scale workpiece, it is necessary to increase molten wide, enhance efficiency, concrete operations are：First, pulsewidth frequency modulation rate, i.e. pulse are determined
Voltage width is constant, increases switching frequency, is increasing output voltage；2nd, determine frequency tune pulsewidth, keep pulse frequency constant,
Increase peak pulse duration, increase output current；3rd, mixing is adjusted, and frequency modulation rate and tune pulsewidth are combined；
For miniature workpiece, then inverse operation is carried out, achieve the purpose that be precisely controlled increasing material.
After the completion of the increasing material manufacturing method accumulation of high-frequency impulse electric arc robot, it can be adjusted according to actual forming process corresponding
Parameter makes shaping more accurate, more efficient.
Compared with the prior art, high-frequency impulse control formula electric arc robot provided by the invention increases in material forming method, no
The problem of prior art thin-walled cylinder is difficult to be molded is addressed only, metal forming can not be applied to by also solving fuse forming technique
The problem of.And high-frequency pulse current is easily controllable, makes shaping more accurate, obtains the higher workpiece of precision.
Claims (7)
- A kind of 1. high-frequency impulse control formula electric arc robot increasing material manufacturing method, which is characterized in that include the following steps：S1：Individual-layer data after the sliced layered shaping of Three-dimensional Entity Components illustraton of model is imported in control system, the control System calculates the path that each layer of electric arc will walk in working face according to individual-layer data；S2：Control system makes the high-frequency impulse electric arc that welding gun generates according to hierarchy number according to the movement of command speed control welding gun It is moved according to specified path and speed, while welding gun melts welding wire using the high-frequency pulse current specified, and is accumulated in designated position, Control system controls wire feeder to enter melt region according to specified speed conveying welding wire；S3：Control system controls welding gun that then the position vertical-lifting of welding gun is carried out next layer of melting heap according to step S2 Product, until part accumulation is completed；S4：After S3 steps are completed, the sedimentary pile poststack of workpiece is completed, stops the movement of welding gun, is carried out at the same time blow-out and stopping The wire feed of wire feeder；S5：After S4 steps are completed, stopping, which conveys, protects gas, after the home that welding gun is moved to, completes high-frequency impulse control The increasing material manufacturing of standard electric arc robot.
- 2. high-frequency impulse control formula electric arc robot increasing material manufacturing method as described in claim 1, which is characterized in that the arteries and veins Power frequency is rushed as 5K-16KHz.
- 3. high-frequency impulse control formula electric arc robot increasing material manufacturing method as described in claim 1, which is characterized in that described Individual-layer data is：Using the central point of workbench as coordinate origin, using the thickness of welding wire deposition as the thickness calibration of model slice, obtain Go out the Z coordinate of welding gun movement；Using the width of welding wire deposition as according to X, the Y-coordinate for calculating welding gun movement.
- 4. high-frequency impulse control formula electric arc robot increasing material manufacturing method as described in claim 1, which is characterized in that described Protection gas is argon gas.
- 5. high-frequency impulse control formula electric arc robot increasing material manufacturing method as described in claim 1, which is characterized in that high frequency arteries and veins Electric arc is rushed as compression arc, the deposition efficiency and precision increased in material forming process can be improved, improves Forming Quality.
- 6. high-frequency impulse control formula electric arc robot increasing material manufacturing method as described in claim 1, which is characterized in that high frequency arteries and veins Frequency and pulsewidth can be adjusted on the control panel according to the requirement of Workpiece structure and size by rushing power supply, control the heat point of electric arc Cloth and the heat input to workpiece, and then be precisely controlled and increase material process：For large-scale workpiece, it is necessary to increase molten wide, enhance efficiency, tool Gymnastics conduct：First, pulsewidth frequency modulation rate is determined, i.e. pulse voltage width is constant, increases switching frequency, is increasing output voltage；2nd, Determine frequency tune pulsewidth, keep pulse frequency constant, increase peak pulse duration, increase output current；3rd, mixing adjust, frequency modulation rate and Pulsewidth is adjusted to be combined；For miniature workpiece, then inverse operation is carried out, achieve the purpose that be precisely controlled increasing material.
- 7. high-frequency impulse control formula electric arc robot increasing material manufacturing method as described in claim 1, which is characterized in that described Increasing material manufacturing method is for the shaping of the increasing material of thin-wall barrel and wall thickness≤3mm.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128435A (en) * | 2018-08-20 | 2019-01-04 | 南京理工大学 | Magnetic field control type electric arc robot increasing material manufacturing method |
| CN109352139A (en) * | 2018-08-07 | 2019-02-19 | 燕山大学 | A kind of oxygen controlled framework metalloid part GTAW electric arc increasing material manufacturing system and method |
| CN109746546A (en) * | 2019-02-12 | 2019-05-14 | 上海交通大学 | A kind of metal semi-molten accumulation increasing material manufacturing method and apparatus |
| CN110394536A (en) * | 2019-05-06 | 2019-11-01 | 江苏烁石焊接科技有限公司 | A kind of induction fusing wire intelligent robot increasing material manufacturing method |
| CN110560837A (en) * | 2019-08-05 | 2019-12-13 | 华中科技大学 | Method for manufacturing metal lattice structure by adding materials to arc fuse and product |
| CN112894067A (en) * | 2021-01-29 | 2021-06-04 | 重庆邮电大学 | Method for controlling shape of circular ring structural member during wire arc additive manufacturing |
| CN113732444A (en) * | 2021-10-18 | 2021-12-03 | 兰州理工大学 | Precise forming method and precise forming system in TIG electric arc additive manufacturing process |
| CN114160922A (en) * | 2021-12-22 | 2022-03-11 | 北京航空航天大学 | System and method for improving aluminum alloy GTAW WAAM precision and efficiency |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109352139A (en) * | 2018-08-07 | 2019-02-19 | 燕山大学 | A kind of oxygen controlled framework metalloid part GTAW electric arc increasing material manufacturing system and method |
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| CN109746546B (en) * | 2019-02-12 | 2020-08-04 | 上海交通大学 | Metal semi-molten stacking additive manufacturing method and equipment |
| CN110394536A (en) * | 2019-05-06 | 2019-11-01 | 江苏烁石焊接科技有限公司 | A kind of induction fusing wire intelligent robot increasing material manufacturing method |
| CN110560837A (en) * | 2019-08-05 | 2019-12-13 | 华中科技大学 | Method for manufacturing metal lattice structure by adding materials to arc fuse and product |
| CN110560837B (en) * | 2019-08-05 | 2020-10-16 | 华中科技大学 | Method for manufacturing metal lattice structure by adding materials to arc fuse and product |
| CN112894067A (en) * | 2021-01-29 | 2021-06-04 | 重庆邮电大学 | Method for controlling shape of circular ring structural member during wire arc additive manufacturing |
| CN112894067B (en) * | 2021-01-29 | 2022-12-27 | 重庆邮电大学 | Method for controlling shape of circular ring structural member during wire arc additive manufacturing |
| CN113732444A (en) * | 2021-10-18 | 2021-12-03 | 兰州理工大学 | Precise forming method and precise forming system in TIG electric arc additive manufacturing process |
| CN114160922A (en) * | 2021-12-22 | 2022-03-11 | 北京航空航天大学 | System and method for improving aluminum alloy GTAW WAAM precision and efficiency |
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