CN105921749A - Plasma casting and rapid prototyping device and rapid prototyping method - Google Patents

Plasma casting and rapid prototyping device and rapid prototyping method Download PDF

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Publication number
CN105921749A
CN105921749A CN201510789236.2A CN201510789236A CN105921749A CN 105921749 A CN105921749 A CN 105921749A CN 201510789236 A CN201510789236 A CN 201510789236A CN 105921749 A CN105921749 A CN 105921749A
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plasma
print
printing
workpiece
distance
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华云峰
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Sinoadditive Manufacturing Equipment Co Ltd
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Sinoadditive Manufacturing Equipment Co Ltd
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Abstract

The invention discloses a plasma casting and rapid prototyping device and a rapid prototyping method. The device consists of a monitoring system, a plasma beam machining system and a horizontal print station. The plasma beam machining system consists of a plurality of plasma beam machining devices. Each plasma beam machining device comprises a plasma generator, a print position adjusting device, a gas supply device and a powder feeder. The monitoring system comprises a plurality of plasma beam machining monitoring devices. Each plasma beam machining monitoring device includes a temperature detecting unit, a horizontal moving controller, a distance detecting unit and a print distance adjusting controller. The method comprises the steps of first, acquisition of a three-dimensional model of a workpiece to be prototyped and layered slicing processing; second, scan path filling; third, print path acquisition; and fourth, printing layer by layer from the bottom to the top. The invention is reasonable in design, simple to operate, high in prototyping efficiency and good in using effect, and requires neither a closed prototyping room nor a protective atmosphere or vacuum environment.

Description

A kind of plasma casting rapid forming equipment and quick molding method
Technical field
The invention belongs to rapid shaping technique field, especially relate to a kind of plasma casting rapid shaping Equipment and quick molding method.
Background technology
At present, domestic and international metal parts rapid shaping technique is mainly precinct laser fusion rapid molding skill Art (Selective laser melting, SLM).The U.S. such as Patent No. US7047098 is special Profit " PROCESS AND DEVICE FOR PRODUCING A SHAPED BODY BY SELECTIVE LASER MELTING " describe a kind of precinct laser utilizing three-dimensional digital model to manufacture fine and close part in detail and melt Change manufacturing process and equipment thereof.Chinese invention patent " a kind of metal of Publication No. CN1603031A Part precinct laser fusion rapid molding method and device thereof " disclose a kind of metal parts precinct laser Fusion rapid molding method and device thereof.This device includes that semiconductor pumped YAG laser or optical fiber swash Light device, light beam focusing system, profiled member cylinder and powder cylinder, semiconductor pumped YAG laser or optical fiber Laser instrument is connected with light beam focusing system, and focuses on and scan in profiled member cylinder, and profiled member cylinder is by paving Powder cylinder is connected with powder cylinder, and paving powder cylinder connects driving motor, drives motor and computer phase Connect.
Metal parts rapid shaping technique also has electron beam rapid shaping technique.Such as Publication No. The Chinese invention patent of CN103273065A " melt by the electron beam constituency of a kind of no-welding-seam metal beehive component Change forming method " disclose a kind of no-welding-seam metal beehive component electron beam selective melting forming method. The method comprises the following steps: one, set up the three-dimensional entity model of no-welding-seam metal beehive component;Two, Carrying out cutting layer to process, obtain the cross section information of each layer section, the section of each layer is respectively 1# section, 2# Section ..., n# section;Three, substrate and metal dust are all put in electron beam rapidform machine;Four, Pre-hot substrate;Five, preparation 1# entity lamella;Six, preparation i# entity lamella, i is 2,3 ..., n; When seven, judging i=n, scanning process terminates;Eight, remove unformed powder, obtain no-welding-seam metal honeybee Nest component.
In order to prepare more large scale or prepare multiple part simultaneously, take laser array and optical system System array approaches or mobile galvanometer scheme.The Chinese invention patent of Publication No. CN 102266942A is " straight Connect the precinct laser fusion rapid molding equipment manufacturing heavy parts " disclose a kind of directly manufacture large-scale The precinct laser fusion rapid molding equipment of fine and close part.This equipment mainly includes laser array, light Learn systems array, moulding cylinder, moulding cylinder three-dimensional zone heating insulation construction, moulding cylinder weight balancing System, substrate levelling device, double back receive cylinder, double storage powder case, double quantitative powder feeding and powder discharging device, paving Powder device, protective atmosphere cover, gas purge system, control system.The optical system taked is by many Individual optical system unit, Mechanical Moving platform construction, can be with arbitrary extension or reduction the covering of optical system Lid scope.Chinese invention patent " the mobile galvanometer selective laser of Publication No. CN103071795A Fusing SLM former " disclose a kind of mobile galvanometer selective laser melting SLM former. This equipment includes by communication line with the X-axis linear electric motors of cross slide way group and longitudinal rail group The digital control system that is connected of Y-axis linear electric motors, X-axis linear electric motors and Y-axis linear electric motors constitute Turntable driving structure, this turntable driving structure is with laser bundle-enlarging collimation mirror group drive connection, laser beam expanding Snap in galvanometer unit bottom collimating mirror group, below galvanometer unit, be provided with shaping work package, becoming Noble gas gas curtain it is provided with between shape work package and galvanometer unit.
The basic functional principle of precinct laser fusion rapid molding equipment is: first utilize on computers The 3D sculpting softwares such as Pro/e, UG, CATIA design the three-dimensional entity model of part, then pass through Slice Software carries out slicing delamination to this threedimensional model, obtains the outline data in each cross section, by number of contours Filling scanning pattern according to generating, tile in working cylinder certain thickness powder, according to the control of computer System, laser beam selects according to the slicing treatment result of three-dimensional parts figure by the way of vibration mirror scanning Property ground fusing fore-put powder layer.Working cylinder declines certain distance and again spreads powder subsequently, and laser beam is shaking Under the drive of mirror, 3-D graphic again according to parts completes the manufacture of next layer of parts.So weight Spread degradation operation under powder, scanning and working cylinder again, thus realize the manufacture of three-dimensional parts.
At present, precinct laser fusion rapid molding technology and electron beam selective melting forming technique are mainly deposited In following three aspect problems:
The first, precinct laser fusion rapid molding technology and electron beam selective melting forming technique needs to protect Protect atmosphere or vacuum environment, to avoid the oxidation of metal parts in forming process.This makes precinct laser melt Changing rapid forming equipment structure complicated, energy source laser instrument and electron gun price are high, former price Expensive.
The second, precinct laser fusion rapid molding technology and electron beam selective melting forming technique needs paving The moulding cylinder system of powder.This makes precinct laser fusion rapid molding equipment and electron beam selective melting molding Device structure is complicated, and not only forming part size is restricted, and shaping efficiency is relatively low.
3rd, in order to ensure part mechanical property, precinct laser fusion rapid molding technology and electron beam Selective melting forming technique needs the globular metallic powder of good fluidity.This makes laser fusion rapid molding The cost of parts of technology and electron beam selective melting forming technique rapid shaping is the highest.
Summary of the invention
The technical problem to be solved is for above-mentioned deficiency of the prior art, it is provided that one Kind of plasma casting rapid forming equipment, its simple in construction, reasonable in design and use easy and simple to handle, become Type efficiency is high, using effect is good, it is not necessary to airtight forming room, and need not protective atmosphere or vacuum ring Border, Workpiece shaping process is directly carried out under atmospheric environment.
For solving above-mentioned technical problem, the technical solution used in the present invention is: a kind of plasma casting is quickly Former, it is characterised in that: by monitoring system, plasma beam system of processing with for work to be formed The horizontal stamp pad composition that part is placed;
Described plasma beam system of processing includes multiple plasma beam processing unit (plant), multiple described etc. The structure of ion beam current processing unit (plant) is the most identical;
Each described plasma beam processing unit (plant) is by being provided with shower nozzle and for producing beam-plasma Plasma generator, the print position that is adjusted the position of described plasma generator adjusts Engagement positions, provide the feeder of working gas for described plasma generator and for continuously to institute The powder feeder composition of printed material, described plasma generator position is sent in stating plasma generator Above horizontal stamp pad and it is arranged in described printing distance adjusting means;Described feeder leads to Cross air supply pipe to be connected with the air inlet opened on described plasma generator;Described plasma occurs Being provided with the powder flow paths for the circulation of described powder in device, described powder flow paths is with described etc. Communicating inside arc chamber in plasma generator and it connects with described air inlet, described powder circulates The external port of passage is powder inlet, and the powder feeding mouth of described powder feeder is connected with powder inlet by powder feeding pipe; Described print position adjusting apparatus includes driving described plasma generator to move in the horizontal plane Dynamic horizontally moving device and the described plasma generator of drive are Tong Bu with described horizontally moving device Move and tackle mutually the printing that the distance between the outlet of described shower nozzle and horizontal stamp pad is adjusted Distance adjusting means, described plasma generator is arranged on described horizontally moving device, and described Horizontally moving device is arranged in described printing distance adjusting means;
Described monitoring system includes multiple being monitored described plasma beam processing unit (plant) respectively Plasma beam processing supervising device, the quantity of described plasma beam processing supervising device is with described etc. In ion beam current system of processing, the quantity of included plasma beam processing unit (plant) is identical, multiple described etc. Ion beam current processing supervising device is connected with multiple described plasma beam processing unit (plant)s respectively;Described etc. The structure of ion beam current processing supervising device is the most identical;
Each described plasma beam processing supervising device all includes processing monitored plasma beam Temperature detecting unit that at device print position on workpiece to be formed, temperature detects in real time, right What described horizontally moving device was controlled move horizontally controller, to the outlet of described shower nozzle and level Distance detector unit that distance between stamp pad detects in real time and print distance regulation to described The printing distance regulation controller that device is controlled, described distance detector unit and printing distance regulation Controller connects, described in move horizontally controller and be connected with described horizontally moving device, described printing away from It is connected with described printing distance adjusting means from regulation controller;Described temperature detecting unit with print away from Connect from regulation controller and the two temperature adjusting forming monitored plasma beam processing unit (plant) fills Put.
Above-mentioned a kind of plasma casting rapid forming equipment, is characterized in that: described plasma generator Angle between central axis and the vertical plane of the beam-plasma produced is not more than 45 °;Described printing away from From adjusting means be along the central axis of described beam-plasma described shower nozzle is adjusted up and down upper Lower adjusting apparatus, described distance detector unit is from described spray to the central axis along described beam-plasma The distance detection device that the distance exported between horizontal stamp pad of head detects in real time;
Described horizontal stamp pad is the shifting being arranged on stamp pad position regulator and moving up and down Moving platform;
Described monitoring system also includes that the position being controlled described stamp pad position regulator is adjusted Whole controller, described position adjustment controller is connected with described stamp pad position regulator.
Above-mentioned a kind of plasma casting rapid forming equipment, is characterized in that: described plasma generator Including plasma gun, described shower nozzle is the anode nozzle of plasma gun front end;Described plasma gun includes Have the gun body of described air inlet, be positioned at the anode nozzle of gun body dead ahead and be plugged in the moon of gun body Pole, described anode nozzle is positioned on front side of negative electrode, and described arc chamber is positioned on front side of negative electrode and it is positioned at anode The posterior medial of nozzle, the front inner of described anode nozzle is spout.
Above-mentioned a kind of plasma casting rapid forming equipment, is characterized in that: described anode nozzle, negative electrode All lay in coaxial with gun body with arc chamber;Described powder flow paths and the inclined laying of gun body and its Front end stretches in spout, described powder flow paths be straight channel and it include being laid in gun body Interior back side walkway and the front side channel being laid in anode nozzle;After described air inlet is positioned at gun body Side, described spout is laid with gun body in coaxial or laid in coaxial with powder flow paths.
Above-mentioned a kind of plasma casting rapid forming equipment, is characterized in that: the number of described horizontal stamp pad Amount is for multiple, and multiple described horizontal stamp pads are respectively the print platform printed for multiple workpiece to be formed And it is respectively positioned in same level;It is mounted on electric walking machine bottom each described horizontal stamp pad Structure, multiple described print platforms are respectively positioned on below described plasma beam system of processing, and multiple described It is to be controlled flat for being positioned at the print platform immediately below described plasma beam system of processing in print platform Platform;
Described monitoring system also includes carrying out the electric walking mechanism of multiple described print platforms respectively The traveling controller that controls and multiple respectively the walking position of multiple described print platforms is carried out in real time The walking position detector unit of detection, the described position adjustment controller institute to multiple described print platforms State stamp pad position regulator to be respectively controlled;The electric walking mechanism of multiple described print platforms All it is connected with traveling controller with multiple described walking position detector units, multiple described print platforms Described stamp pad position regulator is all connected with position adjustment controller.
Above-mentioned a kind of plasma casting rapid forming equipment, is characterized in that: also include a multiple institute of confession State the walking track of the electric walking mechanism walking of print platform, the electric walking of multiple described print platforms Walking mechanism to be respectively positioned on described walking track, described electric walking mechanism is for driving described print platform edge Described walking track carries out the walking mechanism moved forward and backward;The horizontal stamp pad of multiple described print platforms Length direction along described walking track is laid from front to back;
Described powder feeder includes the shell that top has charging aperture and the powder feeding being arranged in described shell Wheel, described powder feeding wheel is driven by driving motor;Described powder feeding mouth is positioned at described outer casing underpart;
Each described plasma beam processing supervising device the most also includes described plasma generator The gas that the plasma generator controller that is controlled, gas flow to air supply pipe detect in real time Flow detection unit, the gas flow being controlled the flow control valve installed on air supply pipe control Powder mass flow detector unit that device, powder feeding flow to powder feeding pipe detect in real time and to driving motor The powder feeding flow controller being controlled, described powder mass flow detector unit is with powder feeding flow controller even Connect;Described plasma generator controller is connected with described plasma generator, and described gas flow is examined Survey unit to be connected with gas flow controller.
Meanwhile, invention additionally discloses a kind of method step simple, reasonable in design and realize convenient, use Effective plasma casting quick molding method, it is characterised in that: the method comprises the following steps:
Step one, workpiece three-dimensional stereo model to be formed obtain and hierarchy slicing processes: use at data Reason equipment and call image processing module obtain workpiece to be formed three-dimensional stereo model, recall layering Section module is treated as the three-dimensional stereo model of type workpiece and carries out hierarchy slicing, and obtains multiple layering and cut Face image;
Multiple described layering cross-sectional images are to treat the three-dimensional stereo model of shaping workpiece to carry out layering and cut Obtaining the image in multiple layering cross section after sheet, multiple described layering cross sections are the most uniformly laid;Institute The each described layering cross section stating workpiece to be formed is all divided into multiple respectively by multiple described plasmas Beam current machining device carries out the print zone printed;
Step 2, scanning pattern are filled: use data handling equipment and call described image processing module, Described layering cross-sectional images multiple in step one are respectively processed, and complete multiple described layering and cut The scanning pattern filling process in face, it is thus achieved that the scanning pattern in multiple described layering cross sections;
The scanning pattern in each described layering cross section all includes the multiple described printing on this layering cross section The scanning pattern in district;
Step 3, printing path obtain: described data handling equipment is multiple according to obtain in step 2 The scanning pattern in described layering cross section, it is thus achieved that the printing path in multiple described layering cross sections;Each described The printing path in layering cross section is all identical with the scanning pattern in this layering cross section, and each described layering cuts The printing path in face all includes the printing path of the multiple described print zone on this layering cross section;
Step 4, the most successively printing: according to the multiple described layering cross section obtained in step 3 Printing path, the most successively treat shaping workpiece and print, it is thus achieved that by multiple shape layers by Under the finished workpart of supreme stacking;The quantity of described shape layer and layering cross section described in step one Quantity identical, the installation position of multiple described shape layers respectively with the laying in multiple described layering cross sections Position one_to_one corresponding and its thickness are the most identical, and the thickness of described shape layer is cut with adjacent two described layerings Distance between face is identical, and in step 3, the printing path in multiple described layering cross sections is respectively multiple institute State the printing path of shape layer;Treating shaping workpiece when printing, process is as follows:
Step 401, bottom print: according to beating of current institute's printing shaping layer acquired in step 3 Print path, uses described plasma beam system of processing to treat the current institute printing shaping layer of shaping workpiece Print;Use described plasma beam system of processing that current institute printing shaping layer is printed Time, use multiple described plasma beam processing unit (plant) to synchronize the multiple institutes to current institute printing shaping layer State print zone to print respectively;
The Method of printing of multiple described plasma beam processing unit (plant)s is the most identical;
Use any one described plasma beam processing unit (plant) institute to current institute printing shaping layer State print zone when printing, this plasma beam processing unit (plant) move horizontally controller according to step In current institute printing shaping layer acquired in three, the printing path of this print zone, moves horizontally described Device is controlled and drives described plasma generator to move in the horizontal plane;Described grade from In daughter generator moving process, this plasma beam processing unit (plant) is by the plasma of interior band molten melt drop Line is sprayed onto on horizontal stamp pad continuously;After sprayed molten melt drop all solidifies, complete currently to be printed The print procedure of this print zone in shape layer;
In this step, current institute printing shaping layer is the molding being positioned at bottommost in multiple described shape layer Layer;
Step 402, last layer print, and comprise the following steps:
Step 4021, horizontal stamp pad move down: horizontal stamp pad in the vertical direction is carried out once to Lower movement and move down height the most identical with the thickness of described shape layer;
Step 4022, print and synchronize temperature control: according to current institute printing shaping acquired in step 3 The printing path of layer, uses described plasma beam system of processing to treat currently being printed of shaping workpiece Shape layer prints;Use described plasma beam system of processing that current institute printing shaping layer is carried out During printing, multiple described plasma beam processing unit (plant) is used to synchronize many to current institute printing shaping layer Individual described print zone prints respectively;
The Method of printing of multiple described plasma beam processing unit (plant)s is the most identical;
Use any one described plasma beam processing unit (plant) institute to current institute printing shaping layer State print zone when printing, this plasma beam processing unit (plant) move horizontally controller according to step In current institute printing shaping layer acquired in three, the printing path of this print zone, moves horizontally described Device is controlled and drives described plasma generator to move in the horizontal plane;Described grade from In daughter generator moving process, this plasma beam processing unit (plant) is by the plasma of interior band molten melt drop Line is sprayed onto on the upper surface of the most printed described shape layer of the next one continuously;Treat that institute's spray fusing melts After drop all solidifies, complete the print procedure of this print zone in current institute printing shaping layer;Print procedure In, by temperature detecting unit to this beam-plasma in the most printed described shape layer of the next one The upper surface temperature of stream processing unit (plant) institute print area detects and in real time by detected temperature information Synchronous driving is to printing distance regulation controller;Further, by this plasma beam processing unit (plant) away from The distance exported described shower nozzle between horizontal stamp pad from detector unit detects in real time, and By the range information synchronous driving detected to printing distance regulation controller;The described distance that prints regulates Temperature information that controller is detected according to temperature detecting unit and adjusting by controlling the described distance that prints The distance that described shower nozzle is exported between horizontal stamp pad by regulating device is adjusted, and makes currently to beat The upper surface of this plasma beam processing unit (plant) institute print area in the described shape layer of the printed next one Temperature is not higher than 0.6 times of the material fusing point of workpiece to be formed;
In plasma generator moving process described in step 401 and step 4022, described powder feeding Described printed material is delivered in described plasma generator by device continuously, and at described working gas The lower printed material sent in described plasma generator of effect is sent to the generation of described plasma The beam-plasma produced in device is interior and is molten into molten melt drop, and described molten melt drop is uniformly distributed in described In beam-plasma, and form the plasma beam of interior band molten melt drop;
Step 403, step 402 is repeated several times, until completing beating of all shape layers of workpiece to be formed Print process.
Said method, is characterized in that: before the most successively printing in step 4, institute in step one State data handling equipment first according to the material fusing point pre-build and printing range data storehouse, and combine logical Cross the material name of the printed material of each plasma beam processing unit (plant) that parameter input unit pre-enters Claim, the basis printing distance of each plasma beam processing unit (plant) is determined;The input of described parameter is single First and described data handling equipment connects;
In described material fusing point and printing range data storehouse, storage has the material fusing point of various material and beats Print range information, material fusing point and the printing range information of every kind of described material all include this kind of material Title, fusing point and basis print distance;It is 5mm~1000mm that described basis prints distance, and material Fusing point is the highest, and it is the nearest that basis prints distance;
Step 401 use any one described plasma beam processing unit (plant) to current institute printing shaping layer A described print zone print before, the printing of this plasma beam processing unit (plant) distance regulation Controller is adjusted according to the range information detected apart from detector unit and by controlling the described distance that prints Distance between outlet and the horizontal stamp pad of described shower nozzle is adjusted to described basis and prints by regulating device Distance;Further, step 401 use this plasma beam processing unit (plant) carry out in print procedure, institute Stating the distance between outlet and the horizontal stamp pad of shower nozzle is that described basis prints distance;
Step 4022 use any one described plasma beam processing unit (plant) to current institute printing shaping Before one described print zone of layer prints, the printing distance of this plasma beam processing unit (plant) is adjusted Joint controller according to the range information detected apart from detector unit and combines the downward of horizontal stamp pad Move number of times and move down height every time, and by controlling described printing distance adjusting means by described Distance between outlet and the upper surface of the most printed described shape layer of the next one of shower nozzle is adjusted Joint prints distance for described basis;Step 4022 use this plasma beam processing unit (plant) carry out beating During print, described shower nozzle is exported the distance between horizontal stamp pad when being adjusted, described Print the temperature information detected according to temperature detecting unit apart from regulation controller and combine distance inspection The distance that described shower nozzle is exported between horizontal stamp pad by the range information that survey unit is detected is entered Row regulation, makes this plasma beam processing unit (plant) institute in the most printed described shape layer of the next one The upper surface temperature of print area controls to melt in the material of this plasma beam processing unit (plant) printed material Between 0.1 times~0.6 times of point;Further, described shower nozzle is exported between horizontal stamp pad When distance is adjusted, the amplitude of accommodation is 5mm~60mm, and material fusing point is the highest, and the amplitude of accommodation is more Little.
Said method, is characterized in that: the quantity of described horizontal stamp pad is multiple, multiple described levels Stamp pad is respectively the print platform printed for multiple workpiece to be formed and it is respectively positioned on same level On;Electric walking mechanism, multiple described print platforms it are mounted on bottom each described horizontal stamp pad It is respectively positioned on below described plasma beam system of processing, and multiple described print platform is positioned at described etc. Print platform immediately below ion beam current system of processing is platform to be controlled;
Described monitoring system also includes carrying out the electric walking mechanism of multiple described print platforms respectively The traveling controller that controls and multiple respectively the walking position of multiple described print platforms is carried out in real time The walking position detector unit of detection, the described position adjustment controller institute to multiple described print platforms State stamp pad position regulator to be respectively controlled;The electric walking mechanism of multiple described print platforms All it is connected with traveling controller with multiple described walking position detector units, multiple described print platforms Described stamp pad position regulator is all connected with position adjustment controller;
When step one carries out workpiece three-dimensional stereo model to be formed acquisition and hierarchy slicing process, to many Individual described workpiece to be formed carries out three-dimensional stereo model acquisition respectively and hierarchy slicing processes;Wherein, right When any one described workpiece to be formed carries out three-dimensional stereo model acquisition and hierarchy slicing process, all use Data handling equipment and call image processing module and obtain the three-dimensional stereo model of this workpiece to be formed, then Call hierarchy slicing module and the three-dimensional stereo model of this workpiece to be formed is carried out hierarchy slicing, and obtain Multiple layering cross-sectional images of this workpiece to be formed;
The height of multiple workpiece to be formed is the most identical;3 D stereo mould to multiple described workpiece to be formed When type carries out hierarchy slicing, lift height the most identical and obtained layering cross-sectional image quantity homogeneous With;
When step 2 is scanned path filling, multiple described workpiece to be formed are scanned respectively Path filling processes;Wherein, when workpiece to be formed any one described is scanned path filling process, All use described data handling equipment and call described image processing module, acquisition in step one is somebody's turn to do The multiple described layering cross-sectional image of workpiece to be formed is respectively processed, and completes multiple described layering The scanning pattern filling process in cross section, it is thus achieved that the scanning pattern in multiple described layering cross sections;
When step 3 carries out printing path acquisition, described data handling equipment is used to obtain respectively multiple The printing path of described workpiece to be formed;Wherein, the print path of any one described workpiece to be formed is obtained During footpath, multiple described all in accordance with this workpiece to be formed obtained in step 2 of described data handling equipment The scanning pattern in layering cross section, it is thus achieved that the print path in the multiple described layering cross section of this workpiece to be formed Footpath, and the printing path in each described layering cross section is all identical with the scanning pattern in this layering cross section;
When step 4 the most successively prints, synchronize to carry out to multiple described workpiece to be formed The most successively print;
Step 401 is carried out when bottom prints and when step 402 carries out last layer printing, all Use described plasma beam system of processing by first to the rear current institute to multiple described workpiece to be formed Printing shaping layer prints respectively;Treat that the current institute printing shaping layer of multiple described workpiece to be formed is equal After printing completes, a upper shape layer of multiple described workpiece to be formed is printed respectively;
Wherein, current to workpiece to be formed any one described of described plasma beam system of processing is used When institute's printing shaping layer prints, first pass through electronic to multiple described print platforms of traveling controller Walking mechanism is respectively controlled, and is moved to by the described print platform printed for this workpiece to be formed described The underface of plasma beam system of processing;Now, be positioned at described plasma beam system of processing just under The described print platform of side is platform to be controlled;Afterwards, then use described plasma beam system of processing The current institute printing shaping layer of this workpiece to be formed is printed.
Said method, is characterized in that: described powder feeder includes that top has shell and the installation of charging aperture Powder feeding wheel in described shell, described powder feeding wheel is driven by driving motor;Described powder feeding mouth position In described outer casing underpart;
Each described plasma beam processing supervising device the most also includes described plasma generator The gas that the plasma generator controller that is controlled, gas flow to air supply pipe detect in real time Flow detection unit, the gas flow being controlled the flow control valve installed on air supply pipe control Powder mass flow detector unit that device, powder feeding flow to powder feeding pipe detect in real time and to driving motor The powder feeding flow controller being controlled, described powder mass flow detector unit is with powder feeding flow controller even Connect;Described plasma generator controller is connected with described plasma generator, and described gas flow is examined Surveying unit to be connected with gas flow controller, described distance detector unit is with gas flow controller even Connect;
In step 4 the most successively print before, data handling equipment elder generation described in step one according to The gas pre-build and powder mass flow data base, and combine the layer of described shape layer set in advance Thickness, is determined the base gas flow of air supply pipe and the powder feeding flow of powder feeding pipe;
Needed for described gas and powder mass flow databases contain the shape layer of multiple different thickness Powder feeding flow and base gas flow;Described base gas flow is 5ml/min~500ml/min, and The powder feeding flow of powder feeding pipe is the biggest, and described base gas flow is the biggest;
In step 401 and step 4022 any one described plasma beam processing unit (plant) described etc. from In daughter generator moving process, the powder feeding flow of powder feeding pipe is carried out by described powder mass flow detector unit Detected synchronizing information is also sent to powder feeding flow controller, described powder feeding flow-control by detection in real time Device is according to the powder feeding flow of predetermined powder feeding pipe the detected letter of combining powder flow detection unit Cease driving motor to be controlled, make the powder feeding flow of powder feeding pipe all with predetermined powder feeding flow phase With;
Before in step 401, any one described plasma beam processing unit (plant) prints, described gas Flow controller is incited somebody to action according to the detected information of detection of gas flow rate unit and by controlling flow control valve The gas flow of air supply pipe is adjusted to described base gas flow;In step 401 in print procedure, institute The gas flow stating air supply pipe is described base gas flow;
In step 4022, any one described plasma beam processing unit (plant) carries out printing and synchronizing temperature control Cheng Zhong, described gas flow controller is according to the detected information of detection of gas flow rate unit and combines distance Detector unit institute detecting distance information, and by controlling flow control valve, the gas flow of air supply pipe is entered Row increase and decrease adjusts;Further, the distance between outlet and the horizontal stamp pad of described shower nozzle is the biggest, described The gas flow of air supply pipe is the biggest.
The present invention compared with prior art has the advantage that
1, the plasma casting rapid forming equipment simple in construction that used, reasonable in design and put into into It is convenient that this relatively low, processing and fabricating and installation are laid.
2, the plasma casting rapid forming equipment used is without airtight forming room, and need not Protective atmosphere or vacuum environment, Workpiece shaping process is directly carried out under atmospheric environment.Thus, structure Very simple, and forming part size is unrestricted, and equipment price is relatively low.
3, printed material supply (material in energy source beam-plasma of plasma casting rapid forming equipment The drop plasma beam of material), it is not necessary to the moulding cylinder system of paving powder need not spread powder system, it is only necessary to One powder feeder, structure significantly simplifies.
4, used plasma casting rapid forming equipment use easy and simple to handle, intelligence degree and Shaping efficiency is high, using effect is good, and the quality of institute's shaping workpiece is high.The monitoring system used includes Position adjustment controller that stamp pad position regulator is controlled, treat molding workpiece surface Temperature detecting unit that temperature detects in real time, shower nozzle is exported between horizontal stamp pad away from From the distance detector unit detected in real time with to printing the printing that distance adjusting means is controlled Distance regulation controller, position adjustment controller is connected with stamp pad position regulator, prints distance Regulation controller with print distance adjusting means be connected, temperature detecting unit and apart from detector unit all with Print distance regulation controller to connect;Temperature detecting unit forms temperature with printing distance regulation controller Regulation device.During actually used, printing in temperature regulation system distance regulation controller according to The detected information of temperature detecting unit is controlled printing distance adjusting means so that print distance energy Automatic adjusument, so can prevent because printing hypotelorism causes the shape layer printed to go out again The problem now melted, and the formed precision caused because of printing hypertelorism also can be prevented relatively low, melted There is the problems such as solidification in drop before being sprayed onto next printable layer upper surface so that forming process is prone to Control, and realize conveniently, effectively preventing surface of the work from aoxidizing simultaneously, thus close without arranging The vacuum environment closed.It addition, the monitoring system used also includes gas flow Automatic adjusument and powder Later and decadent stage of a school of thought amount Automatic adjusument function, intelligence degree is high.
5, the energy source that plasma casting rapid forming equipment uses is beam-plasma, beam-plasma merit Rate is up to tens of kilowatt, energy molten ceramic material, it is achieved metal, ceramic metal and ceramic part etc. Ion casting rapid shaping.Produce plasma generator (specifically plasma gun) knot of beam-plasma Structure is simple, and operation expense is low, plasma casting rapid forming equipment low cost.
6, the drop of plasma casting rapid forming equipment institute printed material is in plasma beam, etc. Ion beam itself has protective effect, adds the effect of working gas, can effectively prevent printed material Oxidation, this equipment need not protective atmosphere or vacuum environment, directly uses under atmospheric environment, tool There are the advantages such as device structure is simple, operating cost is low, forming part size is unrestricted.
7, plasma casting rapid forming equipment uses direct current generator to drive powder wheel rotate and pass through work Powder is delivered in beam-plasma by gas auxiliary, can use a powder or prilling powder, it is not necessary to ball Shape powder.This equipment printed material low cost.
8, when plasma casting rapid forming equipment prints, materials behavior is become solid-state, work by settable liquid Skill process simplification, reduces technology difficulty and cost that 3D prints.Meanwhile, working gas (etc. Ion beam includes unionized working gas) effect under powder enter in beam-plasma, and described Accelerate in beam-plasma, heat and be fused into molten condition and form small drop, this drop with wait from Son bundle sprays in the lump, the plasma beam of band molten melt drop in being formed;It is molten that powder is formed after fusing Melt after drop sprays with beam-plasma, formed by micro-liquid of the molten melt drop being evenly distributed with printed material Stream, forms casting type molding, it is to avoid the rounded constrictions phenomenon produced during molten drop cooled and solidified molding, Part mechanical property is high, and smooth surface reduces the technology difficulty of rapid shaping.
9, the plasma beam system of processing used includes multiple plasma beam processing unit (plant), and And it is correspondingly arranged multiple plasma beam processing supervising device, by multiple plasma beam processing unit (plant)s Workpiece is carried out synchronous processing, the shaping efficiency of workpiece can be effectively improved.It is particularly suited for large scale work Part, the forming process of the workpiece being made up of multiple different materials.Multiple plasma beam processing unit (plant)s Printed material can be the most identical, it is also possible to all differs, and uses mode of operation the most flexible.
10, the quantity of used print platform is one or more.When the quantity of print platform is multiple Time, use easy and simple to handle, intelligence degree is high and using effect good, can synchronously complete multiple workpiece 3D print procedure, production efficiency is greatly improved, and multiple print platform is alternately moved by travelling control Moving to print area (i.e. the underface of plasma beam system of processing), the process that controls is simple, realization Facilitate, and the Forming Quality of multiple workpiece can be effectively controlled.Multiple workpiece to be formed both can be The identical workpiece that structure is the most identical with size, it is also possible to be structure all differ from size multiple different Workpiece, occupation mode is very flexible, is particularly suited for high-volume work pieces process.
11, quick molding method step is simple, reasonable in design and realization side in the plasma casting used Just, using effect good, improved by plasma gun structure and powder be sent directly into beam-plasma In make powder smelting, form the drop plasma beam of institute's printed material.Beam-plasma has protection and makees With, it is not necessary to protective atmosphere or vacuum environment, directly print under atmospheric environment.Further, beat Printed material material supplies in energy source beam-plasma (the drop plasma beam of material), it is not necessary to paving powder Moulding cylinder system.Will it addition, use direct current generator to drive powder wheel to rotate and pass through working gas auxiliary Powder is delivered in beam-plasma, can use a powder or prilling powder, it is not necessary to spherical powder.Beat During print, materials behavior is become solid-state by settable liquid, and technical process simplifies, and reduces the work that 3D prints Skill difficulty and cost, and it is the most size-limited to print part.As shown in the above, the present invention Substantially improving traditional plasma surfacing method, existing plasma surfacing method is generally individually Being provided with plasma arc voltage Height-adjusting device, plasma gun is not more than 15mm with the distance of surface of the work, is suitable for Scope is limited.And in the present invention, print distance can on a large scale in be adjusted, adapt to unlike material Printing demand, and Workpiece shaping quality can be effectively ensured.
Below by drawings and Examples, technical scheme is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of plasma of the present invention casting rapid forming equipment.
Fig. 2 is the structural representation of plasma gun in the embodiment of the present invention 1.
Fig. 3 is the schematic block circuit diagram of monitoring system of the present invention.
Fig. 4 is the structural representation of air inlet ring of the present invention.
Fig. 5 is the structural representation of air inlet ring body of the present invention.
Fig. 6 is the FB(flow block) of plasma of the present invention casting quick molding method.
Fig. 7 is the structural representation of plasma gun in the embodiment of the present invention 2.
Description of reference numerals:
1 feeder;2 powder feeders;3 workpiece to be formed;
4 horizontal stamp pads;5 air supply pipes;6 powder feeding pipe;
7 plasma generator controllers;8 distance detector units;9 temperature detecting units;
10 print distance regulation controller;11 detection of gas flow rate unit;
12 gas flow controllers;13 plasma guns;13-1 gun body;
13-2 anode nozzle;13-3 negative electrode;13-4 arc chamber;
13-5 spout;13-6 insulating barrier;14 powder flow paths;
15 position adjustment controllers;16 three axis numerically controlled machines;About 17 adjusting apparatus;
18 powder mass flow detector units;19 drive motor;20 powder feeding flow controllers;
21 air inlet rings;21-1 air inlet ring body;21-2 annular sealing cover;
21-3 annular air inlet duct;Air inlet outside 21-4;Air inlet inside 21-5;
22 powder inlets;23 PCs;24 move horizontally controller;
24-1 X-axis travel mechanism;24-2 Y-axis moving mechanism;
25 electric walking mechanisms;26 traveling controllers;
27 walking position detector units;28 line slideways;29 flow control valves;
30 plasma beam processing supervising devices.
Detailed description of the invention
A kind of plasma casting rapid forming equipment as shown in Figure 1, by monitoring system, beam-plasma Stream system of processing and the horizontal stamp pad 4 placed for workpiece 3 to be formed form.
Described plasma beam system of processing includes multiple plasma beam processing unit (plant), multiple described etc. The structure of ion beam current processing unit (plant) is the most identical.
Each described plasma beam processing unit (plant) is by being provided with shower nozzle and for producing beam-plasma Plasma generator, the print position that is adjusted the position of described plasma generator adjusts Engagement positions, provide for described plasma generator working gas feeder 1 and for continuously to The powder feeder 2 sending into printed material in described plasma generator forms, and described plasma occurs Device is positioned at above horizontal stamp pad 4 and it is arranged in described printing distance adjusting means;Described supply Device 1 is connected with the air inlet opened on described plasma generator by air supply pipe 5;Described etc. Being provided with the powder flow paths 14 for the circulation of described powder in plasma generator, described powder circulates Passage 14 with communicate inside the arc chamber 13-4 in described plasma generator and it is with described air inlet Mouth connection, the external port of described powder flow paths is powder inlet 22, the powder feeding mouth of described powder feeder 2 It is connected with powder inlet 22 by powder feeding pipe 6;Described print position adjusting apparatus includes driving described etc. The horizontally moving device that plasma generator moves in the horizontal plane and the described plasma of drive Generator and described horizontally moving device synchronizing moving are also tackled the outlet of described shower nozzle mutually and are beaten with level The printing distance adjusting means that distance between ink pad 4 is adjusted, described plasma generator is pacified It is contained on described horizontally moving device, and described horizontally moving device is arranged on the described distance that prints and regulates On device.The powder that described powder feeder 2 is sent into is printed material.Described temperature detecting unit 9 is right At described plasma beam system of processing print position on workpiece 3 to be formed, temperature is examined in real time The infrared temperature sensor surveyed.Described distance detector unit 8 is laser range sensor.
As it is shown on figure 3, described monitoring system includes multiple respectively to described plasma beam processing unit (plant) The plasma beam processing supervising device 30 being monitored, described plasma beam processing supervising device The quantity of 30 is the number of included plasma beam processing unit (plant) with described plasma beam system of processing Measure identical, multiple described plasma beams processing supervising device 30 respectively with multiple described beam-plasmas Stream processing unit (plant) connects;The structure of described plasma beam processing supervising device 30 is the most identical.
Each described plasma beam processing supervising device 30 all includes adding monitored plasma beam Frock puts the temperature detecting unit that at the print position on workpiece 3 to be formed, temperature detects in real time 9, be controlled described horizontally moving device moves horizontally controller 24, goes out described shower nozzle Mouthful and horizontal stamp pad 4 between the distance detector unit 8 that detects in real time of distance and beat described The printing distance regulation controller 10 that print distance adjusting means is controlled, described distance detector unit 8 Be connected with printing distance regulation controller 10, described in move horizontally controller 24 and move horizontally with described Device connects, and the described distance regulation controller 10 that prints is connected with described printing distance adjusting means; Described temperature detecting unit 9 is connected with printing distance regulation controller 10 and the two composition is monitored The temperature control device of ion beam current processing unit (plant).
In the present embodiment, described horizontally moving device includes driving described plasma generator in X-axis Carry out the X-axis travel mechanism 24-1 that moves horizontally on direction and drive described plasma generator at Y Carry out Y-axis moving mechanism 24-2 moved horizontally on direction of principal axis, thus described horizontally moving device is X-Y shaft moving device.
Further, described plasma generator is arranged in Y-axis moving mechanism 24-2, described Y-axis Travel mechanism 24-2 is arranged on X-axis travel mechanism 24-1, and described X-axis travel mechanism 24-1 pacifies It is contained in described printing distance adjusting means.During actually used, by Y-axis moving mechanism 24-2 Described plasma generator is driven to move horizontally in the Y-axis direction, by X-axis travel mechanism 24-1 drives that Y-axis moving mechanism 24-2 is Tong Bu with described plasma generator enters in the X-axis direction Row moves horizontally, and drives described horizontally moving device and institute by described printing distance adjusting means State plasma generator to synchronize to move on the central axis of described beam-plasma.
In the present embodiment, described Y-axis moving mechanism 24-2, X-axis travel mechanism 24-1 and described beat Print distance adjusting means composition drives described plasma generator (specifically plasma gun 13) to carry out The mechanical hand of three-dimensional motion.
In the present embodiment, each described plasma beam processing supervising device 30 the most also includes described The plasma generator controller 7 that plasma generator is controlled, the gas flow to air supply pipe 5 The detection of gas flow rate unit 11 that detects in real time and to the flow control valve installed on air supply pipe 5 The gas flow controller 12 that 25 are controlled, described plasma generator controller 7 and described grade from Daughter generator connects, and described detection of gas flow rate unit 11 is connected with gas flow controller 12.
In the present embodiment, as in figure 2 it is shown, described plasma generator includes plasma gun 13, institute State the anode nozzle 13-2 that shower nozzle is plasma gun 13 front end;Described plasma gun 13 includes having institute Gun body 13-1, the anode nozzle 13-2 being positioned at gun body 13-1 dead ahead that state air inlet and be plugged in rifle Negative electrode 13-3 in body 13-1, described anode nozzle 13-2 are positioned on front side of negative electrode 13-3, described in put Electricity room 13-4 is positioned on front side of negative electrode 13-3 and it is positioned at the posterior medial of anode nozzle 13-2, described The front inner of anode nozzle 13-2 is spout 13-5.
Time actually used, described plasma gun 13 is arranged in Y-axis moving mechanism 24-2.
In the present embodiment, described anode nozzle 13-2, negative electrode 13-3 and arc chamber 13-4 are all and gun body 13-1 lays in coaxial;Described powder flow paths 14 and the inclined laying of gun body 13-1 and its front end Stretch in spout 13-5, described powder flow paths 14 for straight channel and it include being laid in Back side walkway in gun body 13-1 and the front side channel being laid in anode nozzle 13-2.
Further, described air inlet is positioned on rear side of gun body 13-1, described spout 13-5 and gun body 13-1 Lay in coaxial or lay in coaxial with powder flow paths 14.
In the present embodiment, between described anode nozzle 13-2 and gun body 13-1, it is provided with insulating barrier 13-6.
In the present embodiment, as in figure 2 it is shown, described spout 13-5 lays in coaxial with gun body 13-1.
In the present embodiment, described air supply pipe 5 is by air inlet ring 21 and described plasma generator The air inlet opened connects.Further, by air inlet ring 21 in described plasma generator uniformly Supply.
As shown in Figure 4, Figure 5, described air inlet ring 21 for annular and it include air inlet ring body 21-1 It is contained in the annular sealing cover 21-2 on air inlet ring body 21-1, described air inlet ring body 21-1 with lid For having an annular air inlet duct 21-3 on annular and its medial wall, described air inlet ring body 21-1 On have an outside air inlet 21-4 connected with air supply pipe 5 and its inside have multiple inner side and enter Pore 21-5, multiple described inner side air inlet 21-5 the most uniformly lay and it is respectively positioned on ring Inside shape air inlet duct 21-3, described outside air inlet 21-4 is positioned at outside annular air inlet duct 21-3, Described outside air inlet 21-4 and multiple described inner side air inlet 21-5 all with annular air inlet duct 21-3 Inside communicates.
Further, described gun body 13-1 along the circumferential direction has multiple enter with multiple described inner sides respectively The gun body air inlet that pore 21-5 communicates.
Time actually used, described powder flow paths 14 can also lead to the air inlet of described working gas Road uses same passage.
In the present embodiment, the meal outlet of described powder flow paths 14 be positioned on front side of arc chamber 13-4 and It is positioned at the inner back side of spout 13-5.
During plasma gun 13 as shown in Figure 2 uses, produce in described arc chamber 13-4 wait from Daughter, produced plasma forms beam-plasma and sprays through spout 13-5;Meanwhile, Described powder is tilted towards entering spout 13-5 by powder flow paths 14, and at described work gas In described powder enters described beam-plasma under the effect of body, and accelerate in described beam-plasma, add Heat is also fused into molten condition and forms small drop, and this drop sprays in the lump with beam-plasma, is formed The plasma beam of interior band molten melt drop;The molten melt drop that powder is formed after fusing sprays with beam-plasma After going out, formed by the microstream of the molten melt drop being evenly distributed with printed material.Thus, described powder For the powder of workpiece 3 material therefor (i.e. printed material) to be formed, the shape of powder is wanted without special Ask.
In the present embodiment, described working gas is noble gas or H2Gas.
Wherein, noble gas is Ar gas, He gas and N2Gas.
In the present embodiment, described horizontal stamp pad 4 is for being arranged on stamp pad position regulator and energy The mobile platform moved up and down.
Described monitoring system also includes that the position being controlled described stamp pad position regulator is adjusted Whole controller 15, described position adjustment controller 15 is connected with described stamp pad position regulator.
In the present embodiment, described stamp pad position regulator is three axis numerically controlled machine 16.
Further, described position adjustment controller 15 is the controller of three axis numerically controlled machine 16.
Time actually used, described stamp pad position regulator can also use other can complete X, Y The vertically movable dress moved up and down with device or the energy in the vertical direction of three direction motions of Z axis Put.
During actually used, described horizontal stamp pad 4 can also use position fixed fixing Platform.
During actually used, described plasma generator produce beam-plasma central axis with Angle between vertical plane is not more than 45 °;Described printing distance adjusting means is along described beam-plasma Central axis adjusting apparatus 17 up and down that described shower nozzle is adjusted up and down, described distance detection is single Unit 8 be to along described beam-plasma central axis from described shower nozzle export to horizontal stamp pad 4 it Between the distance detection device that detects in real time of distance.
In the present embodiment, described upper and lower adjusting apparatus 17 is Z-direction adjusting apparatus.
Further, described upper and lower adjusting apparatus 17 is telescopic hydraulic cylinder.
In the present embodiment, the central axis of the beam-plasma that described plasma generator produces is in vertically To laying.Time actually used, can according to specific needs, described plasma generator is produced etc. Angle between central axis and the vertical plane of ion beam adjusts accordingly.
In the present embodiment, described powder feeder 2 includes that top has the shell of charging aperture and is arranged on described Powder feeding wheel in shell, described powder feeding wheel is driven by driving motor 19;Described powder feeding mouth is positioned at Described outer casing underpart.
As it is shown on figure 3, each described plasma beam processing supervising device 30 the most also includes powder feeding Powder mass flow detector unit 18 that the powder feeding flow of pipe 6 detects in real time and to driving motor 19 to enter The powder feeding flow controller 20 that row controls, described powder mass flow detector unit 18 and powder feeding flow-control Device 20 connects.
In the present embodiment, described driving motor 19 is direct current generator.During actually used, pass through Change the rotating speed of described direct current generator, the powder feeding flow of powder feeding pipe 6 is carried out simplicity, quickly adjusts.
Time actually used, the quantity of described horizontal stamp pad 4 is one or more.
In the present embodiment, the quantity of described horizontal stamp pad 4 is multiple, multiple described horizontal stamp pads 4 be respectively for multiple workpiece 3 to be formed print print platforms and its be respectively positioned in same level; It is mounted on electric walking mechanism 25, multiple described print platforms bottom each described horizontal stamp pad 4 It is respectively positioned on below described plasma beam system of processing, and multiple described print platform is positioned at described etc. Print platform immediately below ion beam current system of processing is platform to be controlled.
As it is shown on figure 3, described monitoring system also includes the electric walking machine to multiple described print platforms Traveling controller 26 that structure 25 is respectively controlled and multiple row to multiple described print platforms respectively Walking the walking position detector unit 27 detected in real time position, described position adjustment controller 15 is right The described stamp pad position regulator of multiple described print platforms is respectively controlled;Beat described in multiple Print the electric walking mechanism 25 of platform and multiple described walking position detector unit 27 is equal and travelling control Device 26 connects, and the described stamp pad position regulator of multiple described print platforms is all and position adjustment Controller 15 connects.
Meanwhile, plasma of the present invention casting rapid forming equipment also includes that a confession is multiple described The walking track of electric walking mechanism 25 walking of print platform, multiple described print platforms electronic Walking mechanism 25 is respectively positioned on described walking track, and described electric walking mechanism 25 beats described in driving Print platform carries out the walking mechanism moved forward and backward along described walking track;The water of multiple described print platforms Flat stamp pad 4 is laid from front to back along the length direction of described walking track.
In the present embodiment, described walking track is the line slideway 28 laid in level.Time actually used, Described walking track can also use other type of track or chute.Further, multiple described print platforms Horizontal stamp pad 4 be all laid on same straight line.
Time actually used, described walking track can also use arc, circle, ellipse, fold-line-shaped, The tracks such as square shape.
In the present embodiment, the structure of multiple described print platforms is the most identical with size.
Further, the electric walking mechanism 25 of each described print platform all includes described in multiple being arranged on The electric walking travelling wheel moved forward and backward bottom stamp pad position regulator and is carried out along described walking track.
In the present embodiment, the described stamp pad position regulator of multiple described print platforms is three axles Digit Control Machine Tool 16.
In the present embodiment, the quantity of described print platform is two.
Time actually used, can according to specific needs the quantity of described print platform be adjusted accordingly.
In the present embodiment, described monitoring system also includes multiple water to multiple described print platforms respectively The stamp pad displacement monitor that the displacement of flat stamp pad 4 is monitored, each described stamp pad position Monitoring device all includes carrying out the displacement in X-axis, Y-axis and Z-direction of the horizontal stamp pad 4 respectively First displacement detecting unit, the second displacement detecting unit and the triple motion detector unit of detection, institute in real time State the first displacement detecting unit, the second displacement detecting unit and triple motion detector unit all and position adjustment Controller 15 connects.
During physical cabling, multiple described plasma beams processing supervising device 30 all with described data at Reason equipment connects.For plasma beam processing supervising device 30 any one described, described etc. Ion generation controller 7, gas flow controller 12, position adjustment controller 15, printing distance are adjusted Joint controller 10, powder feeding flow controller 20 and move horizontally controller 24 all with described data process Equipment connects, and described data handling equipment is PC 23.Described feeder 1 is entered by PC 23 Row on off control.
Further, multiple described plasma beam processing unit (plant)s can share a feeder 1, it is possible to To be respectively adopted a described feeder 1.
In the present embodiment, each described plasma beam processing unit (plant) the most also includes moving Y-axis respectively Mechanism 24-2 horizontal displacement in the Y-axis direction, to X-axis travel mechanism 24-1 in the X-axis direction Horizontal displacement and the horizontal displacement in the Z-axis direction of upper and lower adjusting apparatus 17 detected in real time 4th displacement detecting unit, the 5th displacement detecting unit and the 6th displacement detecting unit, described 4th displacement Detector unit, the 5th displacement detecting unit and the 6th displacement detecting unit all with move horizontally controller 24 Connect.
A kind of plasma casting quick molding method as shown in Figure 6, comprises the following steps:
Step one, workpiece three-dimensional stereo model to be formed obtain and hierarchy slicing processes: use at data Reason equipment and call image processing module and obtain the three-dimensional stereo model of workpiece 3 to be formed, recalls point Layer section module is treated as the three-dimensional stereo model of type workpiece 3 and carries out hierarchy slicing, and obtains multiple points Layer cross section image;
Multiple described layering cross-sectional images are to treat the three-dimensional stereo model of shaping workpiece 3 to carry out layering and cut Obtaining the image in multiple layering cross section after sheet, multiple described layering cross sections are the most uniformly laid;Institute The each described layering cross section stating workpiece 3 to be formed is all divided into multiple respectively by multiple described plasmas Beam current machining device carries out the print zone printed;
Step 2, scanning pattern are filled: use data handling equipment and call described image processing module, Described layering cross-sectional images multiple in step one are respectively processed, and complete multiple described layering and cut The scanning pattern filling process in face, it is thus achieved that the scanning pattern in multiple described layering cross sections;
The scanning pattern in each described layering cross section all includes the multiple described printing on this layering cross section The scanning pattern in district;
Step 3, printing path obtain: described data handling equipment is multiple according to obtain in step 2 The scanning pattern in described layering cross section, it is thus achieved that the printing path in multiple described layering cross sections;Each described The printing path in layering cross section is all identical with the scanning pattern in this layering cross section, and each described layering cuts The printing path in face all includes the printing path of the multiple described print zone on this layering cross section;
Step 4, the most successively printing: according to the multiple described layering cross section obtained in step 3 Printing path, the most successively treat shaping workpiece 3 and print, it is thus achieved that by multiple shape layers The finished workpart stacked from the bottom to top;The quantity of described shape layer is cut with layering described in step one The quantity in face is identical, the installation position of multiple described shape layers respectively with the cloth in multiple described layering cross sections If position one_to_one corresponding and its thickness are the most identical, the thickness of described shape layer and adjacent two described layerings Distance between cross section is identical, and in step 3, the printing path in multiple described layering cross sections is the most multiple The printing path of described shape layer;Treating shaping workpiece 3 when printing, process is as follows:
Step 401, bottom print: according to beating of current institute's printing shaping layer acquired in step 3 Print path, uses described plasma beam system of processing to treat the current institute printing shaping of shaping workpiece 3 Layer prints;Use described plasma beam system of processing that current institute printing shaping layer is printed Time, use multiple described plasma beam processing unit (plant) to synchronize the multiple institutes to current institute printing shaping layer State print zone to print respectively;
The Method of printing of multiple described plasma beam processing unit (plant)s is the most identical;
Use any one described plasma beam processing unit (plant) institute to current institute printing shaping layer State print zone when printing, this plasma beam processing unit (plant) move horizontally controller 24 basis The printing path of this print zone in current institute printing shaping layer acquired in step 3, to described level Mobile device is controlled and drives described plasma generator to move in the horizontal plane;Described In plasma generator moving process, this plasma beam processing unit (plant) by interior band molten melt drop etc. Ion beam current is sprayed onto on horizontal stamp pad 4 continuously;After sprayed molten melt drop all solidifies, complete current The print procedure of this print zone in institute's printing shaping layer;
In this step, current institute printing shaping layer is the molding being positioned at bottommost in multiple described shape layer Layer;
Step 402, last layer print, and comprise the following steps:
Step 4021, horizontal stamp pad move down: carried out once by horizontal stamp pad 4 in the vertical direction Move down and move down height identical with the thickness of described shape layer;
Step 4022, print and synchronize temperature control: according to current institute printing shaping acquired in step 3 The printing path of layer, uses described plasma beam system of processing to treat the current of shaping workpiece 3 and is beaten Print shape layer prints;Use described plasma beam system of processing that current institute printing shaping layer is entered When row prints, multiple described plasma beam processing unit (plant) is used to synchronize current institute printing shaping layer Multiple described print zones print respectively;
The Method of printing of multiple described plasma beam processing unit (plant)s is the most identical;
Use any one described plasma beam processing unit (plant) institute to current institute printing shaping layer State print zone when printing, this plasma beam processing unit (plant) move horizontally controller 24 basis The printing path of this print zone in current institute printing shaping layer acquired in step 3, to described level Mobile device is controlled and drives described plasma generator to move in the horizontal plane;Described In plasma generator moving process, this plasma beam processing unit (plant) by interior band molten melt drop etc. Ion beam current is sprayed onto on the upper surface of the most printed described shape layer of the next one continuously;Wait to be sprayed After molten melt drop all solidifies, complete the print procedure of this print zone in current institute printing shaping layer;Print During, by temperature detecting unit 9 to such in the most printed described shape layer of the next one The upper surface temperature of ion beam current processing unit (plant) institute print area detects in real time and will be detected temperature Degree synchronizing information is sent to print distance regulation controller 10;Further, processed by this plasma beam The distance detector unit 8 of device exports the distance between horizontal stamp pad 4 to described shower nozzle and carries out Detection in real time, and by the range information synchronous driving detected to printing distance regulation controller 10;Institute State and print the temperature information detected according to temperature detecting unit 9 apart from regulation controller 10 and pass through Control described printing distance adjusting means and described shower nozzle is exported the distance between horizontal stamp pad 4 It is adjusted, makes this plasma beam processing unit (plant) in the most printed described shape layer of the next one The upper surface temperature of institute's print area is not higher than 0.6 times of the material fusing point of workpiece 3 to be formed;
In plasma generator moving process described in step 401 and step 4022, described powder feeding Described printed material is delivered in described plasma generator by device 2 continuously, and at described working gas Send in described plasma generator under the effect of (beam-plasma includes unionized working gas) Printed material be sent in described plasma generator the beam-plasma produced in and be molten into molten Melting drop, described molten melt drop is uniformly distributed in described beam-plasma, and forms interior band molten melt drop Plasma beam;Described printed material is dusty material (i.e. powder);
Step 403, step 402 is repeated several times, until completing all shape layers of workpiece 3 to be formed Print procedure.
In the present embodiment, before step 4 the most successively prints, described in step one at data Reason equipment is first according to the material fusing point pre-build and printing range data storehouse, and combines by parameter defeated Enter the Material Name of the printed material of each plasma beam processing unit (plant) that unit pre-enters, to each etc. The basis of ion beam current processing unit (plant) prints distance and is determined;Described parameter input unit and described number Connect according to processing equipment;
In described material fusing point and printing range data storehouse, storage has the material fusing point of various material and beats Print range information, material fusing point and the printing range information of every kind of described material all include this kind of material Title, fusing point and basis print distance;It is 5mm~1000mm that described basis prints distance, and material Fusing point is the highest, and it is the nearest that basis prints distance;
Step 401 use any one described plasma beam processing unit (plant) to current institute printing shaping layer A described print zone print before, the printing of this plasma beam processing unit (plant) distance regulation Controller 10 according to the distance range information that detected of detector unit 8 and by control described printing away from From adjusting means, the distance between outlet and the horizontal stamp pad 4 of described shower nozzle is adjusted to described basis Print distance;Further, step 401 use this plasma beam processing unit (plant) carry out in print procedure, Distance between outlet and the horizontal stamp pad 4 of described shower nozzle is that described basis prints distance;
Step 4022 use any one described plasma beam processing unit (plant) to current institute printing shaping Before one described print zone of layer prints, the printing distance of this plasma beam processing unit (plant) is adjusted Joint controller 10 according to the range information detected apart from detector unit 8 and combines horizontal stamp pad 4 Move down number of times and move down height every time, and by controlling described printing distance adjusting means By between outlet and the upper surface of the most printed described shape layer of the next one of described shower nozzle Distance is adjusted to described basis and prints distance;Step 4022 uses this plasma beam processing unit (plant) Carrying out in print procedure, the distance exported described shower nozzle between horizontal stamp pad 4 is adjusted Time, the temperature information that described printing distance regulation controller 10 is detected according to temperature detecting unit 9 And combine the distance range information that detected of detector unit 8 to the outlet of described shower nozzle and horizontal stamp pad Distance between 4 is adjusted, and makes this plasma in the most printed described shape layer of the next one The upper surface temperature of beam current machining device institute print area controls to beat at this plasma beam processing unit (plant) Between 0.1 times~0.6 times of the material fusing point of printed material material;Further, outlet and the water to described shower nozzle When distance between flat stamp pad 4 is adjusted, the amplitude of accommodation is 5mm~60mm, and material fusing point The highest, the amplitude of accommodation is the least.
In the present embodiment, before step 4 the most successively prints, described in step one at data Reason equipment is first according to the gas pre-build and powder mass flow data base, and combines set in advance described The thickness of shape layer, is carried out really the base gas flow of air supply pipe 5 and the powder feeding flow of powder feeding pipe 6 Fixed;
Needed for described gas and powder mass flow databases contain the shape layer of multiple different thickness Powder feeding flow and base gas flow;Described base gas flow is 5ml/min~500ml/min, and The powder feeding flow of powder feeding pipe 6 is the biggest, and described base gas flow is the biggest;
In step 401 and step 4022 any one described plasma beam processing unit (plant) described etc. from In daughter generator moving process, the described powder mass flow detector unit 18 powder feeding stream to powder feeding pipe 6 Amount detects in real time and detected synchronizing information is sent to powder feeding flow controller 20, described powder feeding Flow controller 20 is according to the powder feeding flow of predetermined powder feeding pipe 6 combining powder flow detection 18 detection information of unit to driving motor 19 to be controlled, make the powder feeding flow of powder feeding pipe 6 all with Predetermined powder feeding flow is identical;
Before in step 401, any one described plasma beam processing unit (plant) prints, described gas Flow controller 12 is according to the detected information of detection of gas flow rate unit 11 and by controlling Flow-rate adjustment The gas flow of air supply pipe 5 is adjusted to described base gas flow by valve 29;Step 401 prints During, the gas flow of described air supply pipe 5 is described base gas flow;
In step 4022, any one described plasma beam processing unit (plant) carries out printing and synchronizing temperature control Cheng Zhong, described gas flow controller 12 is according to 11 detection information of detection of gas flow rate unit and ties Close distance 8 detecting distance information of detector unit, and by controlling flow control valve 29 to air supply pipe 5 Gas flow carry out increase and decrease adjust;Further, between outlet and the horizontal stamp pad 4 of described shower nozzle Distance is the biggest, and the gas flow of described air supply pipe 5 is the biggest.
In the present embodiment, when obtaining the three-dimensional stereo model of described workpiece to be formed 3, utilize pro/e, The three-dimensional stereo model that the three-dimensional graphics software such as UG, CATIA designs workpiece 3 to be formed is (i.e. three-dimensional Physical model), then by described hierarchy slicing module, this three-dimensional stereo model is carried out hierarchy slicing, And obtain the outline data in each cross section, outline data generate and fill scanning pattern, corresponding obtain described The printing path (printing path in the most each layering cross section) of plasma beam system of processing.Thus, step Rapid one and step 2 employed in method, melt with conventional laser selective melting molding or electron beam constituency The method that chemical conversion type uses is identical.Afterwards, X is carried out in the horizontal plane according to the printing path obtained With in Y direction motor process, described plasma beam system of processing by the grade of interior band molten melt drop from Sub-line is sprayed onto on horizontal stamp pad 4 or the currently the most printed described shape layer of the next one upper continuously On surface;After sprayed molten melt drop all solidifies, complete the print procedure of a shape layer;Then, Described three axis numerically controlled machine 16 declines in the Z-axis direction, successively prints, thus completes 3 d part Print procedure.
Owing to horizontal stamp pad 4 is the mobile platform being arranged on stamp pad position regulator, thus The printing path in each described layering cross section acquired in step 3 can also be three-axis numerical control machine The machining path of bed 16, the most described plasma beam system of processing is not moved, But be moved in horizontal aspect by horizontal stamp pad 4, thus complete the printed of each shape layer Journey.
In the present embodiment, the quantity of described horizontal stamp pad 4 is multiple;
When step one carries out workpiece three-dimensional stereo model to be formed acquisition and hierarchy slicing process, to many Individual described workpiece 3 to be formed carries out three-dimensional stereo model acquisition respectively and hierarchy slicing processes;Wherein, When workpiece 3 to be formed any one described is carried out three-dimensional stereo model acquisition and hierarchy slicing process, all Use data handling equipment and call image processing module and obtain the 3 D stereo mould of this workpiece 3 to be formed Type, recalls hierarchy slicing module and the three-dimensional stereo model of this workpiece 3 to be formed is carried out hierarchy slicing, And obtain multiple layering cross-sectional images of this workpiece 3 to be formed;
The height of multiple workpiece to be formed 3 is the most identical;The three-dimensional of multiple described workpiece 3 to be formed is stood When body Model carries out hierarchy slicing, lift height the most identical and obtained layering cross-sectional image quantity equal Identical;
When step 2 is scanned path filling, multiple described workpiece 3 to be formed are swept respectively Retouch path filling to process;Wherein, workpiece 3 to be formed any one described is scanned at the filling of path During reason, all use described data handling equipment and call described image processing module, obtaining in step one The multiple described layering cross-sectional image of this workpiece 3 to be formed obtained is respectively processed, and completes multiple The scanning pattern filling process in described layering cross section, it is thus achieved that the scanning pattern in multiple described layering cross sections;
When step 3 carries out printing path acquisition, described data handling equipment is used to obtain respectively multiple The printing path of described workpiece to be formed 3;Wherein, beating of any one described workpiece 3 to be formed is obtained During print path, described data handling equipment is all in accordance with this workpiece more than 3 to be formed obtained in step 2 The scanning pattern in individual described layering cross section, it is thus achieved that the multiple described layering cross section of this workpiece 3 to be formed Printing path, and the printing path in each described layering cross section all with the scanning pattern phase in this layering cross section With;
When step 4 the most successively prints, to multiple described same steppings of workpiece 3 to be formed Row the most successively prints;
Step 401 is carried out when bottom prints and when step 402 carries out last layer printing, all Use described plasma beam system of processing by first to the rear current institute to multiple described workpiece 3 to be formed Printing shaping layer prints respectively;Treat the current institute printing shaping layer of multiple described workpiece 3 to be formed After all having printed, a upper shape layer of multiple described workpiece 3 to be formed is printed respectively;
Wherein, described plasma beam system of processing working as workpiece 3 to be formed any one described is used When front institute printing shaping layer prints, first pass through traveling controller 26 to multiple described print platforms Electric walking mechanism 25 be respectively controlled, the described printing that will print for this workpiece 3 to be formed Platform moves to the underface of described plasma beam system of processing;Now, it is positioned at described plasma beam Described print platform immediately below system of processing is platform to be controlled;Afterwards, then use described plasma The current institute printing shaping layer of this workpiece 3 to be formed is printed by line system of processing.
In the present embodiment, when step 401 and step 4022 print, all according to multiple described The installation position of print platform is from front to back or by rear to front order, to multiple described workpiece to be formed The current institute printing shaping layer of 3 prints respectively.
Further, the described printing that will print for this workpiece 3 to be formed in step 401 and step 4021 When platform moves to the underface of described plasma beam system of processing, all right by traveling controller 26 The electric walking mechanism 25 of multiple described print platforms is respectively controlled, and makes multiple described printing put down Platform all moves along described walking track.
Embodiment 2
In the present embodiment, as it is shown in fig. 7, the plasma casting rapid forming equipment used and enforcement Unlike example 1: described spout 13-5 lays in coaxial with powder flow paths 14.
So, after the direction of described beam-plasma being changed by spout 13-5, can effectively subtract The thermic load impact that anode nozzle 13-2 is produced by few plasma jet, improves anode ablation situation. Simultaneously as spout 13-5 lays in coaxial with powder flow paths 14, thus do not interfere with powder Acceleration, heating and fusion process, using effect is the best.
In the present embodiment, used plasma casting the remainder structure of rapid forming equipment, connection Relation and operation principle are the most same as in Example 1.
In the present embodiment, the plasma casting quick molding method used is same as in Example 1.
The above, be only presently preferred embodiments of the present invention, not impose any restrictions the present invention, every Any simple modification, change and equivalent structure above example made according to the technology of the present invention essence Change, all still falls within the protection domain of technical solution of the present invention.

Claims (10)

1. a plasma casting rapid forming equipment, it is characterised in that: by monitoring system, plasma Line system of processing and horizontal stamp pad (4) composition placed for workpiece to be formed (3);
Described plasma beam system of processing includes multiple plasma beam processing unit (plant), multiple described etc. The structure of ion beam current processing unit (plant) is the most identical;
Each described plasma beam processing unit (plant) is by being provided with shower nozzle and for producing beam-plasma Plasma generator, the print position that is adjusted the position of described plasma generator adjusts Engagement positions, provide the feeder (1) of working gas for described plasma generator and for even Continue send in described plasma generator printed material powder feeder (2) composition, described grade from Daughter generator is positioned at horizontal stamp pad (4) top and it is arranged on described printing distance adjusting means On;Described feeder (1) is by being opened on air supply pipe (5) and described plasma generator Air inlet connects;The powder circulation for the circulation of described powder it is provided with logical in described plasma generator Road (14), described powder flow paths (14) and the arc chamber (13-4) in described plasma generator Inside communicates and it connects with described air inlet, and the external port of described powder flow paths is powder inlet (22), the powder feeding mouth of described powder feeder (2) is connected with powder inlet (22) by powder feeding pipe (6); Described print position adjusting apparatus includes driving described plasma generator to move in the horizontal plane Dynamic horizontally moving device and the described plasma generator of drive are Tong Bu with described horizontally moving device Move and tackle what the distance between the outlet of described shower nozzle and horizontal stamp pad (4) was adjusted mutually Printing distance adjusting means, described plasma generator is arranged on described horizontally moving device, and Described horizontally moving device is arranged in described printing distance adjusting means;
Described monitoring system includes multiple being monitored described plasma beam processing unit (plant) respectively Plasma beam processing supervising device (30), described plasma beam processing supervising device (30) Quantity is the quantity phase of included plasma beam processing unit (plant) with described plasma beam system of processing With, multiple described plasma beams processing supervising device (30) respectively with multiple described plasma beams Processing unit (plant) connects;The structure of described plasma beam processing supervising device (30) is the most identical;
Each described plasma beam processing supervising device (30) all includes monitored plasma beam The temperature inspection that at processing unit (plant) print position on workpiece to be formed (3), temperature detects in real time Survey unit (9), described horizontally moving device is controlled move horizontally controller (24), The distance inspection that distance between outlet and the horizontal stamp pad (4) of described shower nozzle is detected in real time Survey unit (8) and the printing distance regulation controller that described printing distance adjusting means is controlled (10), described distance detector unit (8) is connected with printing distance regulation controller (10), institute State and move horizontally controller (24) and be connected with described horizontally moving device, described print distance regulation control Device processed (10) is connected with described printing distance adjusting means;Described temperature detecting unit (9) with beat Print distance regulation controller (10) connects and the temperature of the two monitored plasma beam processing unit (plant) of composition Degree regulation device.
2. according to a kind of plasma casting rapid forming equipment described in claim 1, it is characterised in that: Angle between central axis and the vertical plane of the beam-plasma that described plasma generator produces is not More than 45 °;Described printing distance adjusting means is to described spray along the central axis of described beam-plasma The adjusting apparatus up and down (17) that head adjusts up and down, described distance detector unit (8) is to edge The central axis of described beam-plasma from described shower nozzle export between horizontal stamp pad (4) away from From the distance detection device detected in real time;
Described horizontal stamp pad (4) is for being arranged on stamp pad position regulator and can move up and down Mobile platform;
Described monitoring system also includes that the position being controlled described stamp pad position regulator is adjusted Whole controller (15), described position adjustment controller (15) and described stamp pad position regulator Connect.
3. according to a kind of plasma casting rapid forming equipment described in claim 1 or 2, its feature Being: described plasma generator includes plasma gun (13), described shower nozzle is plasma gun (13) The anode nozzle (13-2) of front end;Described plasma gun (13) includes the rifle having described air inlet Body (13-1), it is positioned at the anode nozzle (13-2) of gun body (13-1) dead ahead and is plugged in gun body (13-1) negative electrode (13-3) in, it is front that described anode nozzle (13-2) is positioned at negative electrode (13-3) Side, described arc chamber (13-4) is positioned at negative electrode (13-3) front side and it is positioned at anode nozzle (13-2) Posterior medial, the front inner of described anode nozzle (13-2) is spout (13-5).
4. according to a kind of plasma casting rapid forming equipment described in claim 3, it is characterised in that: Described anode nozzle (13-2), negative electrode (13-3) and arc chamber (13-4) all with gun body (13-1) Lay in coaxial;Described powder flow paths (14) and gun body (13-1) inclined laying and its before End stretches in spout (13-5), and described powder flow paths (14) is straight channel and its bag Include the back side walkway being laid in gun body (13-1) and the front side being laid in anode nozzle (13-2) Passage;Described air inlet is positioned at gun body (13-1) rear side, described spout (13-5) and gun body (13-1) Lay in coaxial or lay in coaxial with powder flow paths (14).
5. according to a kind of plasma casting rapid forming equipment described in claim 1 or 2, its feature It is: the quantity of described horizontal stamp pad (4) is multiple, multiple described horizontal stamp pads (4) point Not print platform and its for printing for multiple workpiece to be formed (3) is respectively positioned in same level; Each described horizontal stamp pad (4) bottom is mounted on electric walking mechanism (25), multiple described Print platform is respectively positioned on below described plasma beam system of processing, and position in multiple described print platform Print platform immediately below described plasma beam system of processing is platform to be controlled;
Described monitoring system also includes that the electric walking mechanism (25) to multiple described print platforms is respectively The traveling controller (26) that is controlled and multiple walking position to multiple described print platforms respectively The walking position detector unit (27) detected in real time, described position adjustment controller (15) is right The described stamp pad position regulator of multiple described print platforms is respectively controlled;Beat described in multiple The electric walking mechanism (25) of print platform and multiple described walking position detector unit (27) are all with capable Walk controller (26) connect, the described stamp pad position regulator of multiple described print platforms all with Position adjustment controller (15) connects.
6. according to a kind of plasma casting rapid forming equipment described in claim 5, it is characterised in that: Also include the walking track that the electric walking mechanism (25) of a multiple described print platform of confession walks, The electric walking mechanism (25) of multiple described print platforms is respectively positioned on described walking track, described electricity Dynamic walking mechanism (25) is to drive described print platform to carry out the row moved forward and backward along described walking track Walk mechanism;The horizontal stamp pad (4) of multiple described print platforms is along the length side of described walking track Lay to from front to back;
Described powder feeder (2) includes that top has the shell of charging aperture and is arranged in described shell Powder feeding wheel, described powder feeding wheel is driven by driving motor (19);Described powder feeding mouth be positioned at described outside Shell bottom;
Each described plasma beam processing supervising device (30) the most also includes sending out described plasma Plasma generator controller (7) that raw device is controlled, gas flow to air supply pipe (5) are carried out The detection of gas flow rate unit (11) of detection in real time, the Flow-rate adjustment installed upper to air supply pipe (5) The gas flow controller (12) that valve (29) is controlled, the powder feeding flow to powder feeding pipe (6) The powder mass flow detector unit (18) that detects in real time and to driving motor (19) to be controlled Powder feeding flow controller (20), described powder mass flow detector unit (18) and powder feeding flow controller (20) connect;Described plasma generator controller (7) is connected with described plasma generator, Described detection of gas flow rate unit (11) is connected with gas flow controller (12).
7. one kind utilizes rapid forming equipment as claimed in claim 1 to treat shaping workpiece to carry out fast short-term training The method of type, it is characterised in that: the method comprises the following steps:
Step one, workpiece three-dimensional stereo model to be formed obtain and hierarchy slicing processes: use at data Reason equipment and call image processing module and obtain the three-dimensional stereo model of workpiece to be formed (3), then adjusts The three-dimensional stereo model treating shaping workpiece (3) by hierarchy slicing module carries out hierarchy slicing, and obtains Obtain multiple layering cross-sectional images;
Multiple described layering cross-sectional images are to treat the three-dimensional stereo model of shaping workpiece (3) to carry out point The image in multiple layering cross section is obtained, multiple described layering cross sections uniform cloth from the bottom to top after layer section If;The each described layering cross section of described workpiece to be formed (3) is all divided into multiple respectively by multiple Described plasma beam processing unit (plant) carries out the print zone printed;
Step 2, scanning pattern are filled: use data handling equipment and call described image processing module, Described layering cross-sectional images multiple in step one are respectively processed, and complete multiple described layering and cut The scanning pattern filling process in face, it is thus achieved that the scanning pattern in multiple described layering cross sections;
The scanning pattern in each described layering cross section all includes the multiple described printing on this layering cross section The scanning pattern in district;
Step 3, printing path obtain: described data handling equipment is multiple according to obtain in step 2 The scanning pattern in described layering cross section, it is thus achieved that the printing path in multiple described layering cross sections;Each described The printing path in layering cross section is all identical with the scanning pattern in this layering cross section, and each described layering cuts The printing path in face all includes the printing path of the multiple described print zone on this layering cross section;
Step 4, the most successively printing: according to the multiple described layering cross section obtained in step 3 Printing path, the most successively treat shaping workpiece (3) and print, it is thus achieved that by multiple one-tenth The finished workpart that type layer stacks from the bottom to top;The quantity of described shape layer is divided with described in step one The quantity of layer cross section is identical, the installation position of multiple described shape layers respectively with multiple described layering cross sections Installation position one_to_one corresponding and its thickness the most identical, the thickness of described shape layer with described in adjacent two Distance between layering cross section is identical, and in step 3, the printing path in multiple described layering cross sections is respectively The printing path of multiple described shape layers;Treating shaping workpiece (3) when printing, process is as follows:
Step 401, bottom print: according to beating of current institute's printing shaping layer acquired in step 3 Print path, uses described plasma beam system of processing to treat currently being printed of shaping workpiece (3) Shape layer prints;Use described plasma beam system of processing that current institute printing shaping layer is carried out During printing, multiple described plasma beam processing unit (plant) is used to synchronize many to current institute printing shaping layer Individual described print zone prints respectively;
The Method of printing of multiple described plasma beam processing unit (plant)s is the most identical;
Use any one described plasma beam processing unit (plant) institute to current institute printing shaping layer State print zone when printing, this plasma beam processing unit (plant) move horizontally controller (24) root According to the printing path of this print zone in current institute printing shaping layer acquired in step 3, to described water Flat mobile device is controlled and drives described plasma generator to move in the horizontal plane;Institute Stating in plasma generator moving process, this plasma beam processing unit (plant) is by interior band molten melt drop Plasma beam is sprayed onto on horizontal stamp pad (4) continuously;After sprayed molten melt drop all solidifies, complete Become the print procedure of this print zone in current institute printing shaping layer;
In this step, current institute printing shaping layer is the molding being positioned at bottommost in multiple described shape layer Layer;
Step 402, last layer print, and comprise the following steps:
Step 4021, horizontal stamp pad move down: carried out by horizontal stamp pad (4) in the vertical direction Once move down and move down height identical with the thickness of described shape layer;
Step 4022, print and synchronize temperature control: according to current institute printing shaping acquired in step 3 The printing path of layer, uses described plasma beam system of processing to treat the current of shaping workpiece (3) Institute's printing shaping layer prints;Use described plasma beam system of processing to current institute printing shaping When layer prints, multiple described plasma beam processing unit (plant) is used to synchronize current institute printing shaping The multiple described print zone of layer prints respectively;
The Method of printing of multiple described plasma beam processing unit (plant)s is the most identical;
Use any one described plasma beam processing unit (plant) institute to current institute printing shaping layer State print zone when printing, this plasma beam processing unit (plant) move horizontally controller (24) root According to the printing path of this print zone in current institute printing shaping layer acquired in step 3, to described water Flat mobile device is controlled and drives described plasma generator to move in the horizontal plane;Institute Stating in plasma generator moving process, this plasma beam processing unit (plant) is by interior band molten melt drop Plasma beam is sprayed onto on the upper surface of the most printed described shape layer of the next one continuously;Treat institute After spray molten melt drop all solidifies, complete the print procedure of this print zone in current institute printing shaping layer;Beat During print, by temperature detecting unit (9) to the most printed described shape layer of the next one In the upper surface temperature of this plasma beam processing unit (plant) institute print area detect in real time and by institute Detection temperature information synchronous driving is to printing distance regulation controller (10);Further, by such from The distance detector unit (8) of sub-beam current machining device is to the outlet of described shower nozzle and horizontal stamp pad (4) Between distance detect in real time, and the range information synchronous driving that be detected is adjusted to printing distance Joint controller (10);Described distance regulation controller (10) that prints is according to temperature detecting unit (9) The temperature information that detected and by controlling the outlet to described shower nozzle of the described printing distance adjusting means And the distance between horizontal stamp pad (4) is adjusted, make the most printed next one described In shape layer, the upper surface temperature of this plasma beam processing unit (plant) institute print area is the most to be formed 0.6 times of the material fusing point of workpiece (3);
In plasma generator moving process described in step 401 and step 4022, described powder feeding Described printed material is delivered in described plasma generator by device (2) continuously, and in described work The lower printed material sent in described plasma generator of the effect of gas is sent to described plasma The beam-plasma produced in body generator is interior and is molten into molten melt drop, and described molten melt drop is uniformly distributed In described beam-plasma, and form the plasma beam of interior band molten melt drop;
Step 403, step 402 is repeated several times, until completing workpiece to be formed (3) all shape layers Print procedure.
8. according to treating, described in claim 7, the method that shaping workpiece carries out rapid shaping, its feature It is: before step 4 the most successively prints, the root of data handling equipment elder generation described in step one According to the material fusing point pre-build and printing range data storehouse, and combine by parameter input unit in advance The Material Name of the printed material of each plasma beam processing unit (plant) of input, adds each plasma beam The basis that frock is put prints distance and is determined;Described parameter input unit and described data handling equipment Connect;
In described material fusing point and printing range data storehouse, storage has the material fusing point of various material and beats Print range information, material fusing point and the printing range information of every kind of described material all include this kind of material Title, fusing point and basis print distance;It is 5mm~1000mm that described basis prints distance, and material Fusing point is the highest, and it is the nearest that basis prints distance;
Step 401 use any one described plasma beam processing unit (plant) to current institute printing shaping layer A described print zone print before, the printing of this plasma beam processing unit (plant) distance regulation Controller (10) is according to the range information detected apart from detector unit (8) and by described in control Print distance adjusting means the distance between outlet and the horizontal stamp pad (4) of described shower nozzle to be regulated Distance is printed for described basis;Further, step 401 use this plasma beam processing unit (plant) to carry out In print procedure, the distance between outlet and the horizontal stamp pad (4) of described shower nozzle is described basis Print distance;
Step 4022 use any one described plasma beam processing unit (plant) to current institute printing shaping Before one described print zone of layer prints, the printing distance of this plasma beam processing unit (plant) is adjusted Range information the level that combines that joint controller (10) is detected according to distance detector unit (8) are beaten The moving down number of times and move down height every time of ink pad (4), and by control described printing away from From upper by the outlet of described shower nozzle and the most printed current described shape layer of the next one of adjusting means Distance between surface is adjusted to described basis and prints distance;Step 4022 uses this beam-plasma Stream processing unit (plant) carries out in print procedure, between outlet and the horizontal stamp pad (4) of described shower nozzle Distance when being adjusted, described printing distance regulation controller (10) is according to temperature detecting unit (9) The temperature information that detected also combines range information that distance detector unit (8) detected to described spray Distance between outlet and the horizontal stamp pad (4) of head is adjusted, make current the most printed under In one described shape layer, the upper surface temperature of this plasma beam processing unit (plant) institute print area controls Between 0.1 times~0.6 times of the material fusing point of this plasma beam processing unit (plant) printed material;And And, when the distance between outlet and the horizontal stamp pad (4) of described shower nozzle is adjusted, regulation Amplitude is 5mm~60mm, and material fusing point is the highest, and the amplitude of accommodation is the least.
9. according to treating, described in claim 7 or 8, the method that shaping workpiece carries out rapid shaping, its It is characterised by: the quantity of described horizontal stamp pad (4) is multiple, multiple described horizontal stamp pads (4) It is respectively the print platform printed for multiple workpiece to be formed (3) and it is respectively positioned in same level; Each described horizontal stamp pad (4) bottom is mounted on electric walking mechanism (25), multiple described Print platform is respectively positioned on below described plasma beam system of processing, and position in multiple described print platform Print platform immediately below described plasma beam system of processing is platform to be controlled;
Described monitoring system also includes that the electric walking mechanism (25) to multiple described print platforms is respectively The traveling controller (26) that is controlled and multiple walking position to multiple described print platforms respectively The walking position detector unit (27) detected in real time, described position adjustment controller (15) is right The described stamp pad position regulator of multiple described print platforms is respectively controlled;Beat described in multiple The electric walking mechanism (25) of print platform and multiple described walking position detector unit (27) are all with capable Walk controller (26) connect, the described stamp pad position regulator of multiple described print platforms all with Position adjustment controller (15) connects;
When step one carries out workpiece three-dimensional stereo model to be formed acquisition and hierarchy slicing process, to many Individual described workpiece to be formed (3) carries out three-dimensional stereo model acquisition respectively and hierarchy slicing processes;Its In, workpiece (3) to be formed any one described is carried out at three-dimensional stereo model acquisition and hierarchy slicing During reason, all use data handling equipment and call image processing module and obtain this workpiece to be formed (3) Three-dimensional stereo model, recall the hierarchy slicing module 3 D stereo to this workpiece to be formed (3) Model carries out hierarchy slicing, and obtains multiple layering cross-sectional images of this workpiece to be formed (3);
The height of multiple workpiece to be formed (3) is the most identical;To multiple described workpiece to be formed (3) When three-dimensional stereo model carries out hierarchy slicing, lift height is the most identical and is obtained layering cross-sectional image Quantity is the most identical;
When step 2 is scanned path filling, multiple described workpiece to be formed (3) are entered respectively Row scanning pattern filling processes;Wherein, workpiece (3) to be formed any one described is scanned road When footpath filling processes, all use described data handling equipment and call described image processing module, to step The multiple described layering cross-sectional image of this workpiece to be formed (3) obtained in rapid is respectively processed, And complete the scanning pattern filling process in multiple described layering cross section, it is thus achieved that multiple described layering cross sections Scanning pattern;
When step 3 carries out printing path acquisition, described data handling equipment is used to obtain respectively multiple The printing path of described workpiece to be formed (3);Wherein, any one described workpiece to be formed (3) is obtained Printing path time, described data handling equipment all in accordance with in step 2 obtain this workpiece to be formed (3) scanning pattern in multiple described layering cross section, it is thus achieved that multiple institutes of this workpiece to be formed (3) State layering cross section printing path, and the printing path in each described layering cross section all with this layering cross section Scanning pattern identical;
When step 4 the most successively prints, same to multiple described workpiece to be formed (3) Step the most successively prints;
Step 401 is carried out when bottom prints and when step 402 carries out last layer printing, all Use described plasma beam system of processing by first to rear, multiple described workpiece to be formed (3) being worked as Front institute printing shaping layer prints respectively;Treat that the current of multiple described workpiece to be formed (3) is beaten After print shape layer has all printed, the upper shape layer to multiple described workpiece to be formed (3) Print respectively;
Wherein, use described plasma beam system of processing to workpiece (3) to be formed any one described Current institute printing shaping layer when printing, first pass through traveling controller (26) and described beat multiple The electric walking mechanism (25) of print platform is respectively controlled, and will beat for this workpiece to be formed (3) The described print platform of print moves to the underface of described plasma beam system of processing;Now, it is positioned at institute Stating the described print platform immediately below plasma beam system of processing is platform to be controlled;Afterwards, then adopt By described plasma beam system of processing, the current institute printing shaping layer of this workpiece to be formed (3) is entered Row prints.
10. according to treating, described in claim 7 or 8, the method that shaping workpiece carries out rapid shaping, It is characterized in that: described powder feeder (2) includes that top has the shell of charging aperture and is arranged on described Powder feeding wheel in shell, described powder feeding wheel is driven by driving motor (19);Described powder feeding mouth position In described outer casing underpart;
Each described plasma beam processing supervising device (30) the most also includes sending out described plasma Plasma generator controller (7) that raw device is controlled, gas flow to air supply pipe (5) are carried out The detection of gas flow rate unit (11) of detection in real time, the Flow-rate adjustment installed upper to air supply pipe (5) The gas flow controller (12) that valve (29) is controlled, the powder feeding flow to powder feeding pipe (6) The powder mass flow detector unit (18) that detects in real time and to driving motor (19) to be controlled Powder feeding flow controller (20), described powder mass flow detector unit (18) and powder feeding flow controller (20) connect;Described plasma generator controller (7) is connected with described plasma generator, Described detection of gas flow rate unit (11) is connected with gas flow controller (12), described distance inspection Survey unit (8) to be connected with gas flow controller (12);
In step 4 the most successively print before, data handling equipment elder generation described in step one according to The gas pre-build and powder mass flow data base, and combine the layer of described shape layer set in advance Thickness, is determined the base gas flow of air supply pipe (5) and the powder feeding flow of powder feeding pipe (6);
Needed for described gas and powder mass flow databases contain the shape layer of multiple different thickness Powder feeding flow and base gas flow;Described base gas flow is 5ml/min~500ml/min, and The powder feeding flow of powder feeding pipe (6) is the biggest, and described base gas flow is the biggest;
In step 401 and step 4022 any one described plasma beam processing unit (plant) described etc. from In daughter generator moving process, described powder mass flow detector unit (18) is to powder feeding pipe (6) Powder feeding flow detects in real time and detected synchronizing information is sent to powder feeding flow controller (20), Described powder feeding flow controller (20) is according to the powder feeding flow of predetermined powder feeding pipe (6) and ties Close powder mass flow detector unit (18) detected information driving motor (19) is controlled, make to send The powder feeding flow of tube cell (6) is all identical with predetermined powder feeding flow;
Before in step 401, any one described plasma beam processing unit (plant) prints, described gas Flow controller (12) according to detection of gas flow rate unit (11) institute detection information and is flowed by control The gas flow of air supply pipe (5) is adjusted to described base gas flow by adjustable valve (29);Step In rapid 401 in print procedure, the gas flow of described air supply pipe (5) is described base gas flow;
In step 4022, any one described plasma beam processing unit (plant) carries out printing and synchronizing temperature control Cheng Zhong, described gas flow controller (12) is detected letter according to detection of gas flow rate unit (11) Cease and combine distance detector unit (8) institute detecting distance information, and by controlling flow control valve (29) The gas flow of air supply pipe (5) is carried out increase and decrease adjustment;Further, the outlet of described shower nozzle and level Distance between stamp pad (4) is the biggest, and the gas flow of described air supply pipe (5) is the biggest.
CN201510789236.2A 2015-11-17 2015-11-17 Plasma casting and rapid prototyping device and rapid prototyping method Pending CN105921749A (en)

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