CN101885063B - Laser cladding forming device and laser cladding forming method of metal part - Google Patents
Laser cladding forming device and laser cladding forming method of metal part Download PDFInfo
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- CN101885063B CN101885063B CN 201010248416 CN201010248416A CN101885063B CN 101885063 B CN101885063 B CN 101885063B CN 201010248416 CN201010248416 CN 201010248416 CN 201010248416 A CN201010248416 A CN 201010248416A CN 101885063 B CN101885063 B CN 101885063B
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Abstract
The invention relates to a laser cladding forming device and a laser cladding forming method of a metal part. The device comprises a work bench in three-dimensional motion, a laser device, a wire feed device and a control system, wherein the wire feed device comprises a pinch roll wheel set, and the drive wheel of the pinch roll wheel set is connected with a stepping motor; the control system comprises a multi-shaft motion control card, and the multi-shaft motion control card is connected with the stepping motor, a work bench driving motor and the laser device respectively. The method comprises the steps of modeling, instruction conversion, sheet forming and deposition forming and the like. Metal wires are molten by laser to form molten drops, the molten drops are piled up and cooled on the work bench, sheets are formed along with the motion of the work bench, and all sheets are deposited layer by layer to form the three-dimensional metal part. The invention has low manufacturing cost, high forming efficiency, high part structure strength, high surface quality and wide application range.
Description
Technical field
The present invention relates to metal parts forming processing technology field, particularly the laser cladding forming method of laser cladding forming equipment and a kind of metal parts.
Background technology
Traditional metal parts forming method comprises numerical control machine tool cutting processing, casting, injection moulding etc.Digit Control Machine Tool is the processing and manufacturing equipment that generally uses.But Digit Control Machine Tool is difficult to make the part with complex surface or structure, such as thin-wall construction, closed inner chamber structure and concurrence cooling structure etc.; Also be difficult to process the part of some material, such as titanium alloy and high hardness material.
Rapid shaping is a new manufacture method, can solve the problem that classical production process exists.Current, topmost rapid prototyping material has: resin, powder, paper, wax, plastic material even rubber, and they can only be used for conceptual model, vision prototype.The part that processes has problems at formed precision and efficient.In addition, some techniques are subject to the restriction of material property, are unsuitable for directly making fast mould.Metal parts has good surface quality, high form and dimensional precision, caused and directly to have come moulding with traditional quick molding method with high structural strength, therefore can't satisfy manufacturing industry---especially fast mould is made the field---to the high requirement of part machinery performance, industrial in the urgent need to a kind of rapid shaping technique that can rapid metal parts manufacturing.
At present both at home and abroad the research of the quick molding method of metal parts mainly contained following aspect.
One, cubic light appearance (Stereo Lithography Apparatus, SLA) technology.The SLA technology claims again Introduction To Stereolithography, its principle is computer controlled controlling laser beam to photosensitive resin is that point by point scanning is carried out on the surface of raw material, the thin resin layer (a few tenths of approximately millimeter) that is scanned the zone produces photopolymerization reaction and solidifies a thin layer of formation part.Workbench moves down the distance of a bed thickness, so that the resin surface that is cured applies the new liquid resin of one deck again, carries out the scanning machining of lower one deck, so repeatedly, until the manufacturing of whole prototype is complete.Because photopolymerization reaction is based on the effect of light rather than based on the effect of heat, so only need the lower lasing light emitter of power when work.In addition, because there is not thermal diffusion, add that chain reaction can control well, can guarantee that polymerisation does not occur in outside the laser spots, thereby machining accuracy is high), surface quality is good, raw-material utilization rate can be made complex-shaped, meticulous part near 100%, and efficient is high.For larger-size part, then can adopt first piecemeal moulding then bonding method make.Shortcoming: be accompanied by physical and chemical changes in (1) forming process, so product is more flexible, need to support, (2) equipment operation and maintenance cost are higher.(3) spendable material category is less.(4) liquid resin has smell and toxicity, and needs the lucifuge protection, to prevent in advance polymerization reaction take place, limitation is arranged during selection.(5) need regelate.(6) performance after the liquid resin assimilation is still not as industrial plastic commonly used, and generally more crisp, easy fracture does not make and carries out machined, and resin shrinkage causes precise decreasing, light-cured resin that certain toxicity etc. is arranged.The method is mainly used in the forming part prototype, in the metal parts processing, need to make metal parts through lost-wax casting with this prototype, and molding time is longer, and processing cost is higher.
Two, the direct technology of motlten metal forming part mainly comprises selective laser sintering SLS(Selective Laser Sintering) technology, laser cladding forming LCF(Laser Cladding Forming) technology, Laser Near shape LENS(Laser Engineering Net Shaping) technology etc.The forming principle of SLS is: first spread one deck powder with roller on workbench and be heated to fusion temperature a little less than it, then, laser beam under the control of computer according to the information of cross section profile, the powder at solid section place to processing scans, make the temperature of powder rise to melting point, so mutually bond after the fusing of powder intersection, progressively obtain each layer profile.Powder in non-sintering zone still is loose shape, as the support of workpiece and lower one deck powder.After one formable layer was finished, the descend height of a cross-sectional layers of workbench carried out stone and the sintering of lower one deck, so the final 3 D workpiece that forms of circulation again.The operation principle of LCF technology is by to the workbench numerical control, realizes laser beam to scanning, the cladding of powder, and final molding goes out the part of required form.Result of study shows: the factors such as size of part slicing mode, laser melting coating layer thickness, laser output power, spot size, light distribution, sweep speed, sweep spacing, scan mode, dust feeder, powder sending quantity and powder particle are all influential to precision and the intensity of forming part.The LENS technology then is that SLS technology and LCF technology are combined, and has kept the advantage of these two kinds of technology; The metal dust of selecting has three kinds of forms: (1) single metal; (2) metal adds the low-melting-point metal binding agent; (3) metal adds organic binding agent.
What the shortcoming of the technology of above-mentioned direct motlten metal forming part was all to adopt is to spread the powder mode, so no matter the powder of which kind of form of use, the density of the metal after laser sintered is lower, concrete dynamic modulus, intensity are lower.Improve sintered part(s) intensity, must carry out post processing, such as infiltration resin, low-melting-point metal, or carry out hip treatment, but these post processing meetings change the precision of metal parts, and surface roughness is higher, shaping efficiency is not high.
Summary of the invention
The object of the invention is to provide for the deficiencies in the prior art a kind of shaping efficiency high, the part dense structure of preparation, crystal grain is tiny, surface roughness is low, laser cladding forming equipment applied widely; A kind of laser cladding forming method of the metal parts based on this laser cladding forming equipment is provided simultaneously.
For achieving the above object, the present invention adopts following technical scheme: a kind of laser cladding forming equipment, comprise CNC numerical control workbench, described CNC numerical control workbench is provided with the workbench that can do the X-Y-Z three-dimensional motion, described workbench top is installed with laser device, the laser beam output of described laser device is over against described workbench, and it also comprises wire feeder and control system; Described wire feeder comprises support and wire feeding mouth, be provided with in the described support and pinch running roller pair, the described right driving wheel of running roller that pinches is connected with the output shaft of a stepper motor, and this stepper motor is fixedly arranged on described support, and described wire feeding mouth is connected with described support by a three-dimensional regulation device; Described control system comprises the motion-control module that is provided with motion control software, described motion-control module is provided with multi-axis motion control card, this multi-axis motion control card is connected with the drive motors that is connected workbench X-Y-Z three-dimensional motion with described stepper motor respectively, and described multi-axis motion control card also is connected with the laser head device of rotation driving of described laser aid.
Wherein, described control system also comprises the temperature inductor that is arranged at CNC numerical control workbench.
Wherein, described CNC numerical control workbench is provided with limit switch at described workbench periphery, and described limit switch is connected with described multi-axis motion control card.
Further, describedly pinch running roller right driven pulley is articulated on the driven pulley adjuster; Described driven pulley adjuster comprises an adjusting rod and an adjusting bolt; Described adjusting rod is hinged in the support, and driven pulley is articulated in adjusting rod near free end; Described adjusting bolt is bolted in support, the free end of the described adjusting rod of front end contact of adjusting bolt.
Further, the described circumferential surface that pinches the right driving wheel of running roller offers wired groove, and the position of the wired groove of the corresponding driving wheel of described driven pulley circumferential surface also offers wired groove; Be provided with anti-slip veins in the described wired groove cell wall.
Wherein, described wire feeding mouth is hinged on described three-dimensional regulation device front end.
Wherein, described wire feeding mouth is provided with the protection gas jets of the required protective gas of transmission laser cladding technique.
As realizing another goal of the invention technical scheme of the present invention, a kind of metal parts laser cladding forming method, may further comprise the steps: a, modeling, utilize CAD software or reverse technology to generate the CAD 3D model of part, utilize the control software that is shaped that described CAD 3D model is cut into the series of parallel thin slice at a certain distance, obtain the outline data of each layer thin slice; B, instruction transformation according to the movement locus of the outline data design work platform of each layer thin slice, convert this movement locus the control instruction of multi-axis motion control card to, and export described control instruction to described multi-axis motion control card; C, slice forming, multi-axis motion control card control workbench is done X-direction and Y-direction motion, control simultaneously wire feeder wire is delivered to the workbench top over against the position of laser instrument excitation device laser beam output, laser device produces laser beam, fuse metal silk front end, the formation molten drop also drips in workbench, and described molten drop is piled up cooling at workbench, and forms thin slice with working table movement; D, deposition modeling, after the complete sheet moulding, multi-axis motion control card control workbench is done the Z-direction motion, move downward the distance of the described spacing of step a, carry out again the moulding of next thin slice with step c, and finish successively the moulding of each layer thin slice, molten drop is piled up the cooling deposition modeling and is made metal parts.
Wherein, described wire employing diameter is the wire of 0.4mm～0.6mm.
Wherein, among the described step c, the wire feed rate of wire feeder is 10～40mm/s, and the translational speed of the X-direction of described workbench and Y-direction motion is 5～30mm/s, and the power that described laser device produces laser beam is 0.8～1.2kw.
Beneficial effect of the present invention is: by the lf wire, form molten drop, molten drop is piled up cooling at workbench, and forms thin slice with working table movement, and each thin slice deposits from level to level successively and forms the 3-dimensional metal part; Manufacture process of the present invention need not adopt casting pattern or forging mold and other special processing equipment, has significantly reduced manufacturing cost; Simplified technological process, shaping efficiency is high; Because part is to be formed by the metal drop accumulative deposit, so part dense structure, the crystal grain of preparation are tiny, surface roughness is low, design of part intensity and surface quality are high; The present invention can make things convenient for and makes the traditional handicraft method fastly and be difficult to the complicated metal parts making even can't make, is suitable for the shaping of the materials such as the unmanageable high work hardening rate metal of conventional method, refractory metal, intermetallic compound, and is applied widely.
Description of drawings
The invention will be further described to utilize accompanying drawing, but the embodiment in the accompanying drawing does not consist of any limitation of the invention.
Accompanying drawing 1 is the structural representation of a kind of laser cladding forming equipment of the present invention.
Accompanying drawing 2 is the laser device of a kind of laser cladding forming equipment of the present invention and the partial structurtes schematic diagram of wire feeder.
Accompanying drawing 3 is structural representations of the wire feeder of a kind of laser cladding forming equipment of the present invention.
Accompanying drawing 4 is the schematic diagrames at another visual angle of the wire feeder of a kind of laser cladding forming equipment of the present invention.
Accompanying drawing 5 is flow chart of steps of a kind of metal parts laser cladding forming method of the present invention.
Comprise among Fig. 1, Fig. 2, Fig. 3 and Fig. 4:
1---workbench 2---laser device 21---laser head
22---laser beam output 3---wire feeder 313---wire trays
314---conduit 315---protection gas jets 32---supports
331---driving wheel 332---driven pulley 35---three-dimensional regulation devices
35a---X-axis adjuster 35b---Z axis adjuster 35c---Y-axis adjuster
36---wire feeding mouth 371---adjusting rod 372---adjusting bolts
38---stepper motor 4---control system 41---multi-axis motion control cards
5---wire.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing, see Fig. 1～shown in Figure 4, a kind of laser cladding forming equipment, comprise CNC numerical control workbench, described CNC numerical control workbench is provided with the workbench 1 that can do the X-Y-Z three-dimensional motion, described workbench 1 top is installed with laser device 2, and the laser beam output 22 of described laser device 2 is over against described workbench 1, and it also comprises wire feeder 3 and control system 4; Described wire feeder 3 comprises support 32 and wire feeding mouth 36, be provided with in the described support 32 and pinch running roller pair, the described right driving wheel of running roller 331 that pinches is connected with the output shaft of a stepper motor 38, this stepper motor 38 is fixedly arranged on described support 32, and described wire feeding mouth 36 is connected with described support 32 by a three-dimensional regulation device 35; Described control system 4 comprises the motion-control module that is provided with motion control software, described motion-control module is provided with multi-axis motion control card 41, this multi-axis motion control card 41 is connected with the drive motors that is connected workbench 1X-Y-Z three-dimensional motion with described stepper motor 38 respectively, and described multi-axis motion control card 41 also is connected with laser head 21 device of rotation driving of described laser aid.
As shown in Figure 5, utilize a kind of metal parts laser cladding forming method of laser cladding forming equipment of the present invention, may further comprise the steps: a, modeling, utilize CAD software or reverse technology to generate the CAD 3D model of part, utilize the control software that is shaped that described CAD 3D model is cut into the series of parallel thin slice at a certain distance, obtain the outline data of each layer thin slice; B, instruction transformation according to the movement locus of the outline data design work platform 1 of each layer thin slice, convert this movement locus the control instruction of multi-axis motion control card 41 to, and export described control instruction to described multi-axis motion control card 41; C, slice forming, multi-axis motion control card 41 control workbench 1 are done X-direction and Y-direction motion, control simultaneously wire feeder 3 wire 5 is delivered to workbench 1 top over against the position of laser instrument excitation device laser beam output 22, laser device 2 produces laser beam, fuse metal silk 5 front ends, the formation molten drop also drips in workbench 1, and described molten drop is piled up cooling at workbench 1, and forms thin slice with workbench 1 motion; D, deposition modeling, after the complete sheet moulding, multi-axis motion control card 41 control workbench 1 are done the Z-direction motion, move downward the distance of the described spacing of step a, carry out again the moulding of next thin slice with step c, and finish successively the moulding of each layer thin slice, molten drop is piled up the cooling deposition modeling and is made metal parts.
In the cladding forming process of metal parts, by regulating described three-dimensional regulation device 35, make wire feeding mouth 36 accurate alignment outputs 22 at the focus place of workbench 1 formation; Part three-dimensional structure to be prepared is through described step a and the instruction of step b formation control; Be articulated with wire tray 314 on the frame of CNC numerical control workbench, when work, the wire 5 that coils in wire tray 314 pulled out, send into described support 32; Wire 5 is interior through an auxiliary wheel with pinch running roller pair at support 32, when being strained by alignment, by described driving wheel 331, obtains the power of sending to that stepper motor 38 provides; Wire 5 enters wire feeding mouth 366, and stretches out from the front end of wire feeding mouth 36 after deriving from the wire outlet end of support 32, and the LASER HEATING that is produced by laser device 2 is melted and formed molten drop, is piled into 3 d part through described step c and steps d successively.The positional precision of wire feeder 3 wire feeds is guaranteed that by three-dimensional regulation device 35 precision of wire feed rate is guaranteed by multi-axis motion control card 41 control step motors 38.
The present invention forms molten drop by lf wire 5, and molten drop is piled up cooling at workbench 1, and forms thin slice with workbench 1 motion, and each thin slice deposits from level to level successively and forms the 3-dimensional metal part; Manufacture process of the present invention need not adopt casting pattern or forging mold and other special processing equipment, has significantly reduced manufacturing cost; Simplified technological process, shaping efficiency is high; Because part is to be formed by the metal drop accumulative deposit, so part dense structure, the crystal grain of preparation are tiny, surface roughness is low, design of part intensity and surface quality are high; The present invention can make things convenient for and makes the traditional handicraft method fastly and be difficult to the complicated metal parts making even can't make, is suitable for the shaping of the materials such as the unmanageable high work hardening rate metal of conventional method, refractory metal, intermetallic compound, and is applied widely.
Wherein, described multi-axis motion control card 41(is Program Multiple Axises Controller, be called for short PMAC) be the open multi-axis motion controller that U.S. Delta Tau company the nineties is released the earliest, it provide motion control, discrete control, internal affairs process, with the basic function of the numerical control such as mutual of main frame, the control system that is widely used in multiaxial motion is not given unnecessary details its structure and operation principle here.
Wherein, the described three-dimensional regulation device 35 of present embodiment is comprised of X-axis adjuster 35a, Y-axis adjuster 35c and Z axis adjuster 35b; Described X-axis adjuster 35a, Y-axis adjuster 35c and Z axis adjuster 35b be secondary and adjusting screw(rod) composition that is used for control sliding pair relative sliding by pair of sliding; The sliding pair of described Y-axis adjuster 35c respectively with the sliding pair of X-axis adjuster 35a, and the sliding pair of Z axis adjuster 35b is affixed; By turning each adjusting screw(rod), regulate the relative position of corresponding with it sliding pair during use, thereby realize the adjusting of X, Y, Z three-dimensional space position.Certainly, the three-dimensional regulation technology belongs to ripe prior art, as long as can realize the fine adjustment of three-dimensional space position, the present invention also can adopt the three-dimensional regulation device of other structure.
Control system 4 of the present invention also comprises the temperature inductor that is arranged at CNC numerical control workbench.In process, molten drop drips in workbench 1, merges with dripping before in the molten drop of workbench 1, cools off at last and forms the solid metallic part, in this process, it is very important that metal is converted to solid-state setting rate by liquid state, solidify too fast, then between molten drop and the molten drop, or metallographic structure can't be merged mutually between thin slice and the thin slice, the design of part intensity that forms is not strong, easily between molten drop and molten drop, or cracks between thin slice and the thin slice; If the molten drop setting rate is excessively slow, then in the forming process, liquid metal easily flows and can't finalize the design, and affects compact dimensions; The setting rate of molten drop depends on molten drop self temperature and environment temperature, droplet temperature is determined by laser temperature, environment temperature then needs monitoring and regulates, described temperature inductor namely is used for the monitoring environment temperature, and the data that gather are passed to control system 4, and then changing into the parameter that multi-axis motion control card 41 is regulated stepper motor 38 wires feed rate and workbench 1 translational speed, this has improved functional reliability of the present invention.
Wherein, described CNC numerical control workbench is provided with limit switch at described workbench 1 periphery, and described limit switch is connected with described multi-axis motion control card 41.In the course of work, the factors such as possible rigging error owing to workbench 1, wearing and tearing, control signal error produce the displacement error of workbench 1, this will affect the formed precision of part, so limit switch is set, be used for the displacement error of monitoring FEEDBACK CONTROL workbench 1.Certainly, the device of this monitoring feedback to workbench 1 displacement error also can be grating scale, sensor.
As shown in Figure 3, describedly pinch running roller right driven pulley is articulated on the driven pulley adjuster; Described driven pulley adjuster comprises an adjusting rod 371 and an adjusting bolt 372; Described adjusting rod 371 is hinged in the support 32, and driven pulley is articulated in adjusting rod 371 near free end; Described adjusting bolt 372 is bolted in support 32, the free end of the described adjusting rod 371 of front end contact of adjusting bolt 372.Described adjusting bolt 372 is screwed onto on the support 32, the free end of the described adjusting rod 371 of front end contact of adjusting bolt 372.Turn described adjusting bolt 372, adjusting rod 371 is owing to compressing of the modulated bolt 372 of its free end and around hinge through, thus the distance of regulating the pivot joint relative driving wheel 331 of driven pulley thereon; Can regulate so the described running roller that pinches to the clamping degree to wire 5, simultaneously, when this pinches running roller when pinching the wire 5 of different cross section diameter, also can be by regulating described driven pulley adjuster, thereby realization pinches different size wire 5, has further strengthened the scope of application of the present invention.
Wherein, the described circumferential surface that pinches the right driving wheel of running roller 331 offers wired groove, and the position of the corresponding driving wheel 331 wired grooves of described driven pulley circumferential surface also offers wired groove; Be provided with anti-slip veins in the described wired groove cell wall.This wired groove can protect wire 5 being unlikely to be damaged by pressure when being pinched, simultaneously, because when pinching, wire 5 contacts with the cell wall of wired groove, has increased the contact area right with pinching running roller, thereby has increased the frictional force of wire feed under identical clamping force.
Wherein, described wire feeding mouth 36 is hinged on described three-dimensional regulation device 35 front ends.Like this, wire feeding mouth 36 can rotate around the front end of three-dimensional regulation device 35, thus the angle of regulating wire feed, and above-mentioned three-dimensional regulation device 35 is mainly used in accurately controlling the space orientation of wire feeding mouth 36.The described wire feeding mouth 36 of present embodiment can also be changed at described three-dimensional regulation device 35 wire feeding mouth 36 of different inner diameters, to satisfy the wire feed needs of different model wire 5.
See Fig. 3 and shown in Figure 4, described wire feeding mouth 36 is provided with the protection gas jets 315 of the required protective gas of transmission laser cladding technique.
Wherein, the wire inlet end of described support 32 and rolling have between the wire tray 13 of wire 5, and are equipped with conduit 314 between the wire outlet end of support 32 and the wire feeding mouth 36; The effect of described conduit 314 is to limit and change the direction of advance of wire 5.The material of the described conduit 314 of present embodiment adopts polytetrafluoroethylene (PTFE), and the internal diameter of conduit 314 is than the large 0.5-1.0mm of wire 5 diameters.
In the laser cladding forming method of this metal part, it is the wire of 0.4mm～0.6mm that described wire 5 adopts diameter.The diameter of wire 5 affects droplet size, also that is to say, and is influential to the precision of each drilling depth of cladding forming.If wire 5 diameters are too small, then droplet size is little, and shaping speed is slow, and not high to the capacity usage ratio of laser device 2; If wire 5 diameters are excessive, then might cause in the process of laser fusion wire 5, wire 5 ends fully the fusing and molten drop has dripped, this will cause molten drop inhomogeneous, affect formed precision, so choose the wire 5 that diameter is 0.4mm～0.6mm, in the cladding process, the droplet size that forms is moderate, can Effective Raise formed precision and design of part intensity.
Among the step c of the laser cladding forming method of this metal part, the wire feed rate of wire feeder 3 is 10～40mm/s, the translational speed of the X-direction of described workbench 1 and Y-direction motion is 5～30mm/s, and the power that described laser device 2 produces laser beam is 0.8～1.2kw.The translational speed of the wire feed rate of wire feeder 3 and workbench 1 is interactional, and the two has determined the formed precision of part jointly.Wire feed rate is too fast, and then wire 5 can not be completely melted, and molten drop has part and residues in unfused part metals silk 5 surfaces before drippage, and this will affect the molten drop uniformity; Wire feed rate is excessively slow, and then molten drop is supplied with the needs can not guarantee cladding forming, effectively combination between two adjacent molten drops, thus affect the structural strength of part.In like manner, in the process of a slice forming, if the translational speed of workbench is not complementary with the molten drop dropleting speed, translational speed is crossed and is then easily caused slowly molten drop to pile up, and too fastly then easily causes effectively combination between two adjacent molten drops.So, in the situation of selected wire 5 diameters, selecting the X-direction of workbench 1 and the translational speed of Y-direction motion is 5～30mm/s, be complementary with it, the selection wire feed rate is 10～40mm/s, this has guaranteed the uniformity that molten drop generation, molten drop drip, and then has guaranteed the uniformity of cladding forming process, has guaranteed formed precision.
The above only is preferred embodiments of the present invention, so all equivalences of doing according to the described structure of patent claim of the present invention, feature and principle change or modify, is included in the patent claim of the present invention.
Claims (1)
1. use a kind of metal parts laser cladding forming method of laser cladding forming equipment, it is characterized in that it may further comprise the steps:
A, modeling utilize CAD software or reverse technology to generate the CAD 3D model of part, utilize the control software that is shaped that described CAD 3D model is cut into the series of parallel thin slice at a certain distance, obtain the outline data of each layer thin slice;
B, instruction transformation according to the movement locus of the outline data design work platform of each layer thin slice, convert this movement locus the control instruction of multi-axis motion control card to, and export described control instruction to described multi-axis motion control card;
C, slice forming, multi-axis motion control card control workbench is done X-direction and Y-direction motion, control simultaneously wire feeder wire is delivered to the workbench top over against the position of laser device laser beam output, laser device produces laser beam, fuse metal silk front end, the formation molten drop also drips in workbench, and described molten drop is piled up cooling at workbench, and forms thin slice with working table movement; The wire feed rate of wire feeder is 10～40mm/s, and the translational speed of the X-direction of described workbench and Y-direction motion is 5～30mm/s, and the power that described laser device produces laser beam is 0.8～1.2kw; It is the wire of 0.4mm～0.6mm that described wire adopts diameter;
D, deposition modeling, after the complete sheet moulding, multi-axis motion control card control workbench is done the Z-direction motion, move downward the distance of the described spacing of step a, carry out again the moulding of next thin slice with step c, and finish successively the moulding of each layer thin slice, molten drop is piled up the cooling deposition modeling and is made metal parts;
Described laser cladding forming equipment comprises CNC numerical control workbench, described CNC numerical control workbench is provided with the workbench that can do the X-Y-Z three-dimensional motion, described workbench top is installed with laser device, the laser beam output of described laser device is over against described workbench, and it also comprises wire feeder and control system;
Described wire feeder comprises support and wire feeding mouth, be provided with in the described support and pinch running roller pair, the described right driving wheel of running roller that pinches is connected with the output shaft of a stepper motor, and this stepper motor is fixedly arranged on described support, and described wire feeding mouth is connected with described support by a three-dimensional regulation device;
Described control system comprises the motion-control module that is provided with motion control software, described motion-control module is provided with multi-axis motion control card, this multi-axis motion control card is connected with the drive motors that is connected workbench X-Y-Z three-dimensional motion with described stepper motor respectively, and described multi-axis motion control card also is connected with the laser head device of rotation driving of described laser aid;
Described control system also comprises the temperature inductor that is arranged at CNC numerical control workbench;
Described CNC numerical control workbench is provided with limit switch at described workbench periphery, and described limit switch is connected with described multi-axis motion control card.
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