CN105195742B - A kind of fusing route designing method of high energy beam selective melting shaping - Google Patents
A kind of fusing route designing method of high energy beam selective melting shaping Download PDFInfo
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Abstract
The invention discloses a kind of fusing route designing method of high energy beam selective melting shaping, including step：First, workpiece to be processed layering cross-sectional image is obtained：The layering cross-sectional image of the multiple layerings of workpiece to be processed is obtained, and to layering cross-sectional image storage；The section of each layering is a region to be processed；2nd, contour line extraction：Extract the contour line of each layering cross-sectional image；3rd, fusing path filling：Multiple regions to be processed are carried out with the filling of fusing path respectively, when the filling of fusing path is carried out to any one region to be processed, including step：Top layer scanning pattern is filled, kernel scanning area determines and the filling of kernel scanning pattern.The inventive method step is simple, reasonable in design and realizes that convenient, using effect is good, the fusing path that can easy, quickly design the fusing path of high energy beam selective melting shaping and design is reasonable, Workpiece Machining Accuracy is high, and each position of workpiece is heated evenly and good mechanical performance.
Description
Technical field
The invention belongs to high energy beam processing technique field, more particularly, to a kind of fusing road of high energy beam selective melting shaping
Footpath method for designing.
Background technology
High energy beam selective melting technology is a kind of advanced increases material manufacturing technology, first with Computer Design target part mould
Type, then by the model with software hierarchy, obtain part section information, controlled after being successively superimposed high energy beam current according to cross section information by
Layer fusing metal powder, such layer upon layer is finally obtained target part.High energy beam selective melting technology need not manufacture mould just
The metal parts of arbitrarily complicated shape can be quickly directly obtained, is to solve the manufacture of complex technology part, shorten the production cycle, improved
The effective way of productivity ratio and reduction production cost.High energy beam is also referred to as high energy beam current, such as laser beam, electron beam, beam-plasma.
Nowadays, the high energy beam current for increasing material manufacturing mainly has two kinds of electron beam and laser beam, by energy density and material property
Limitation, fusing of the Layered manufacturing processes that high energy beam selective melting shapes in order to be completed material by one-off scanning is shaped, only
Can pointwise or piecemeal heating, material powder or wire also can only pointwise or subregion be melted.At present, high energy beam selective melting skill
Pointwise or blocked scan fusing mode that art is used, being heated for part different shape position are inconsistent, easily cause material to be heated
Uneven, Melting And Solidification process easily produces thermal stress；Also, after machining, if part memory is in larger residual stress
Harmful effect will be produced to its precision and mechanical property, shaping thermal stress can cause inside parts defect and warpage when serious.
The content of the invention
The technical problems to be solved by the invention are for above-mentioned deficiency of the prior art, there is provided a kind of high energy beam choosing
The fusing route designing method of area's fusing shaping, its method and step is simple, reasonable in design and realizes that convenient, using effect is good, energy
Easy, the quick fusing path designed the high energy beam selective melting fusing path for shaping and design is reasonable, work pieces process essence
Degree is high, and each position of workpiece is heated evenly and good mechanical performance.
In order to solve the above technical problems, the technical solution adopted by the present invention is：It is molten that a kind of high energy beam selective melting shapes
Change route designing method, it is characterised in that：The method is comprised the following steps：
Step one, workpiece to be processed layering cross-sectional image are obtained：Obtain the layering sectional view of the multiple layerings of workpiece to be processed
Picture, and acquired multiple described layering cross-sectional image is stored in data processing equipment；
Multiple layerings are laid from the bottom to top and it is in parallel laying, the thickness of each layering with use high energy
Thickness when beam selective melting manufacturing process is successively melted shaping to the workpiece to be processed is identical；
The layering section of each layering is a region to be processed, and each described layering cross-sectional image is one
The image in the individual region to be processed；The region to be processed is the region that selective melting shaping is carried out using high energy beam, described
High energy beam is electron beam, laser beam or beam-plasma；
Step 2, contour line extraction：Using the data processing equipment and image processing module is called, extract multiple institutes
State the contour line of layering cross-sectional image；The contour line of each layering cross-sectional image is all including the layering cross-sectional image
Outer contour and all inner outlines, the outer contour and inner outline are closed curve；
Step 3, the filling of fusing path：Using the data processing equipment and call path fill module, in step one
Multiple regions to be processed carry out the filling of fusing path respectively, obtain the high energy beam scanning road in multiple regions to be processed
Footpath；The high energy beam scanning pattern in each region to be processed includes top layer scanning pattern and kernel scanning pattern；Multiple institutes
The fusing path fill method all same in region to be processed is stated, the filling of fusing path is carried out to region to be processed any one described
When, comprise the following steps：
Step 301, the filling of top layer scanning pattern：According to the current figure for filling region to be processed extracted in step 2
The contour line of picture, is filled to the current top layer scanning pattern for filling region to be processed；Currently fill region to be processed
Image be currently processed image；
The top layer scanning pattern includes the scanning route of all contour lines of currently processed image；
Wherein, every scanning route of the outer contour enters including one along the outer contour in currently processed image
Acquisition is inwardly indented scanning after the outline scan line and M bars of row scanning carry out being inwardly indented for M time to the outline scan line
Line, is inwardly indented that scan line is respectively positioned on outline scan line inner side and it is arranged from outside to inside described in M bars, adjacent two it is described to
Between interior indentation scan line and outline scan line is located at outermost being inwardly indented in scan line with being inwardly indented described in M bars
Spacing between scan line is m × d, and wherein d is the beam spot diameter, of high energy beam described in step one；M=1-e, e are high energy beam
The overlapping rate and 0.5≤e ＜ 1 of beam spot；M is positive integer and M >=1；Scanning is inwardly indented described in the outline scan line and M bars
The region being inwardly indented between scan line of most inner side is located in line to be swept by an outline in current filling region to be processed
Retouch region；
Every scanning route of the inner outline is swept including one along the inner outline in currently processed image
What the Internal periphery scan line and M bars retouched were obtained after carrying out expanding outwardly for M times to the Internal periphery scan line expands outwardly scan line, M
Expand outwardly that scan line is respectively positioned on Internal periphery scan line outside and it is arranged from the inside to the outside described in bar, adjacent two described to extending out
Between scan line and Internal periphery scan line and the spacing between scan line that expands outwardly positioned at most inner side are m × d；Institute
State Internal periphery scan line and be current filling region to be processed positioned at the outermost region expanded outwardly between scan line
One Internal periphery scanning area；
Current all outline scanning areas and all Internal periphery scanning areas composition for filling region to be processed is current
Fill the top layer scanning area in region to be processed；
Step 302, kernel scanning area determine：According to the current top layer scanning for filling region to be processed in step 301
Region, is determined to the current kernel scanning area for filling region to be processed；
The current closed area being located inside the top layer scanning area in region to be processed of filling is internal layer scanning area
Domain, the kernel scanning area is located in the internal layer scanning area and it is to sweep with the gap between the top layer scanning area
Retouch gap, the region of the width of the scanning gap for n × d and residing for it is gap area, wherein n be clearance amendment coefficient and
0.5≤n≤1；The current kernel scanning area and the gap area for filling region to be processed constitutes the internal layer scanning area
Domain；
Step 303, the filling of kernel scanning pattern：Identified current filled region to be processed is interior in step 302
In Nuclear receptor co repressor region, the current kernel scanning pattern for filling region to be processed is filled；
The kernel scanning pattern includes a plurality of kernel scan line being filled in the kernel scanning area, a plurality of described
Kernel scan line in it is parallel laying and its laid from front to back, the spacing between adjacent two kernel scan lines is equal
It is m × d；The kernel scan line is a straight scan line or is divided into position from left to right by the Internal periphery scanning area
In a plurality of described straight scan line on same straight line；
Step 304, step 301 to step 303 is repeated several times, until completing the work area all to be added of the workpiece to be processed
The fusing path filling process in domain.
A kind of fusing route designing method of above-mentioned high energy beam selective melting shaping, it is characterized in that：To be obtained in step one
The multiple described layering cross-sectional image for taking is stored in when in data processing equipment, according to multiple layering row from the bottom to top
Sequentially, layering cross-sectional image described to multiple is stored row respectively by elder generation to rear；Wherein, multiple layerings are located at bottommost
The layering cross-sectional image of layering store at first, and multiple layerings are last positioned at the layering cross-sectional image of the layering of topmost
Storage.
A kind of fusing route designing method of above-mentioned high energy beam selective melting shaping, it is characterized in that：To each in step 2
After the contour line of the layering cross-sectional image is extracted, the plan-position data for being both needed to all contour lines to being extracted are entered
The synchronous storage of row；Every plan-position data of the contour line include being located at the two dimension of multiple images point on this contour line
Plane coordinates data.
A kind of fusing route designing method of above-mentioned high energy beam selective melting shaping, it is characterized in that：It is outer described in step 301
Profile scan line, Internal periphery scan line, it is inwardly indented scan line and expands outwardly scan line and be top layer scan line；Step 301
In when carrying out top layer scanning pattern and filling, the data processing equipment need to be carried out to the plan-position data of all top layer scan lines
Synchronous storage；Every plan-position data of the top layer scan line include being located at multiple images point in the scan line of this top layer
Two-dimensional plane coordinate data；
When the filling of kernel scanning pattern is carried out in step 303, the data processing equipment need to be to all straight scan lines
Plan-position data synchronize storage；Including being located at, this is straight to sweep every plan-position data of the straight scan line
Retouch the two-dimensional plane coordinate data of multiple images point on line；
In step 303 after the filling of kernel scanning pattern, current all top layer scan lines for filling region to be processed are put down
The plan-position data of face position data and all straight scan lines, the current scanning pattern letter for filling region to be processed of composition
Breath；
It is described after the fusing path filling process in the region all to be processed that the workpiece to be processed is completed in step 304
Data processing equipment is by the scanning pattern information output in all regions to be processed.
A kind of fusing route designing method of above-mentioned high energy beam selective melting shaping, it is characterized in that：Table is carried out in step 301
Layer scanning pattern fill when, also need to all outline scan lines, all Internal periphery scan lines, it is all be inwardly indented scan line and
All scanning directions for expanding outwardly scan line are labeled；
It is inwardly indented described in M bars in scan line and is inwardly indented the scanning direction of scan line conversely, described described in adjacent two
Outline scan line is located at the outermost scanning direction phase for being inwardly indented scan line with being inwardly indented described in M bars in scan line
Instead；
The scanning direction of scan line is expanded outwardly in every scanning route of the inner outline described in adjacent two conversely,
And the scanning side for expanding outwardly scan line that most inner side is located in scan line is expanded outwardly described in the Internal periphery scan line and M bars
To opposite；
When carrying out the filling of kernel scanning pattern in step 303, also need to enter rower to the scanning direction of all kernel scan lines
Note；
The scanning direction of adjacent two kernel scan lines is opposite.
A kind of fusing route designing method of above-mentioned high energy beam selective melting shaping, it is characterized in that：In being carried out in step 303
When Nuclear receptor co repressor path is filled, also need to be labeled the scanning sequencing of a plurality of kernel scan line；The a plurality of kernel
The scanning sequencing of scan line is to be scanned one by one from the front to the back or from the front to the back according to installation position.
A kind of fusing route designing method of above-mentioned high energy beam selective melting shaping, it is characterized in that：A plurality of institute in step 303
State and be located in kernel scan line the kernel scan line of most front side and be front side scan line and after the kernel scan line positioned at most rear side is
Side scan line, is located at the interior Nuclear receptor co repressor between the front side scan line and the rear side scan line in a plurality of kernel scan line
Line is interscan line；
Every the kernel scan line is divided into three scanning sections, three scannings from the front to the back according to scanning direction
Sections is respectively anterior Scanning Section, middle part Scanning Section and rear portion Scanning Section from the front to the back；
When the scanning sequencing of a plurality of kernel scan line is to be scanned one by one from the front to the back according to installation position
When, the rear portion Scanning Section of the front side scan line is scanning steering section, and the anterior Scanning Section of the rear side scan line turns to scan
Scanning is to the anterior Scanning Section and rear portion Scanning Section of section, and the every interscan line turn to section；
When the scanning sequencing of a plurality of kernel scan line is to be scanned one by one from the front to the back according to installation position
When, the anterior Scanning Section of the front side scan line is scanning steering section, and the rear portion Scanning Section of the rear side scan line turns to scan
Scanning is to the anterior Scanning Section and rear portion Scanning Section of section, and the every interscan line turn to section；
When the filling of kernel scanning pattern is carried out in step 303, two end points for turning to sections to all scannings are also needed to enter respectively
Rower is noted, and the two-dimensional plane coordinate data of two end points for turning to section to scanning each described synchronize record respectively.
A kind of fusing route designing method of above-mentioned high energy beam selective melting shaping, it is characterized in that：The scanning turns to section
Length be D, wherein D=t × d, t for turn to section correction factor and t=0.5~5.
A kind of fusing route designing method of above-mentioned high energy beam selective melting shaping, it is characterized in that：Described in step 301
M=1 or 2.
A kind of fusing route designing method of above-mentioned high energy beam selective melting shaping, it is characterized in that：Obtained in step one and treated
During the layering cross-sectional image of the multiple layerings of processing workpiece, the three-dimensional stereo model of the workpiece to be processed is first obtained, and will be described
Three-dimensional stereo model is stored to the data processing equipment；Described image processing module is recalled from the bottom to top to the three-dimensional
Three-dimensional model is layered, and obtains the layering cross-sectional image of multiple layerings.
The present invention has advantages below compared with prior art：
1st, method and step is simple, reasonable in design and realizes that conveniently, input cost is relatively low.
2nd, easy to operate, energy is easy, be rapidly completed the fusing path planning procedure of various different shape workpiece, and fusing road
Footpath design process can be completed within a few minutes.
3rd, the scanning area in part section melting range (region i.e. to be processed) is decomposed into top layer scanning area and interior
Two, Nuclear receptor co repressor region part, is scanned fusing path and designs, while in kernel scanning area respectively according to different methods
Gap (i.e. gap area) is set and between the scanning area of top layer, fusing path is reasonable in design, and can effectively prevent superfusion.
Wherein, the scanning pattern of top layer scanning area is filled by the profile trend that drip molding is layered, kernel scanning area
The scanning pattern in domain is filled using straight line, and designed fusing path provides for the surface quality of forming process precise control shaping part
Data basis.
Filling gap is reserved between top layer scanning area and kernel scanning area, can prevent top layer from having melted the portion of shaping
Divide and melted again in interior nuclear fusion, that is, prevent top layer from superfusing.Thus top layer can effectively prevent with the method for kernel preset clearance
Destruction when only kernel shapes to top layer.
4th, scanning sequencing and scanning direction are designed respectively so that scanning process is easy to operate, and can enter
One step prevents superfusion.Simultaneously so that the Energy distribution of high energy beam is evenly in scanning process so that each position of workpiece is heated
Even and good mechanical performance.
5th, when the scanning route direction to adjacent two kernel scan lines is changed, turns to section according to the scanning of setting and enter
Row change, when turning to section to scanning and being scanned, (or the scanning speed of the high energy beam is improved using the power for reducing high energy beam
Degree) mode be scanned, the power of high energy beam is also referred to as power density or energy.So as to can effectively prevent scanning pattern side
Superfusion phenomenon during to change.
Thus, when the fusing path of kernel scanning area is designed, section being turned near surface layer setting scanning, kernel melts
Change and the speed of fusing scanning is improved when scanning turns to section to scanning or energy is reduced, on the corner (i.e. scan line turn can be prevented
To place) local superfusion caused by local energy is excessively concentrated when returning to fusing, thus can effectively be reduced close to the superfusion of top layer source
Probability.
6th, using effect is good and practical value is high, and top layer shaping is melted using contour line by equidistant filling, in shaping stage
Drip molding surface quality can be improved, drip molding surface flatness and consistency is significantly improved；Electron beam according to formation system, swash
The overlap joint of beam spot diameter, setting kernel scanning area and the top layer scanning area (also referred to as melting range) of light beam or beam-plasma away from
From, be prevented from top layer superfusion, reduce forming process in top layer cave in and upper volume probability.Traditional manufacturing process is not reserved
Gap, can cause the shaped part in top layer to be melted again when kernel shapes, and cause top layer to be superfused and reduce top layer and shape
Quality.Meanwhile, kernel scanning area fusing path sets scanning and turns to section when filling, in corner, (i.e. scan line turns forming process
To) when, section reduction energy is turned to according to scanning or fusing sweep speed is improved, so as to prevent the position close to top layer because energy
Amount excessively concentrates caused superfusion phenomenon, so that top layer forming quality is improved, while prevent top layer from superfusing, and in reduction forming process
Top layer cave in and upper volume probability.To sum up, the present invention is prevented from the superfusion of shaping stage top layer, and top layer collapses in reducing forming process
Collapse and upper volume probability, improve drip molding internal soundness and consistency, improve surface roughness, be that one kind can be controlled in workpiece
The high energy beam fusing scanning pattern method for designing of portion's quality and surface roughness.
In sum, the inventive method step is simple, reasonable in design and realizes that convenient, using effect is good, can be easy, quick
Rationally, Workpiece Machining Accuracy is high, workpiece in the fusing path designed the fusing path of high energy beam selective melting shaping and design
Each position is heated evenly and good mechanical performance.
Below by drawings and Examples, technical scheme is described in further detail.
Brief description of the drawings
Fig. 1 is method of the present invention FB(flow block).
Fig. 2 is the structural representation of workpiece to be processed of the present invention.
Fig. 3 is the dimensional structure diagram of workpiece to be processed of the present invention.
Fig. 4 be the layering of workpiece to be processed of the present invention 3rd layering cross-sectional image in the contour line schematic diagram that extracts.
Fig. 5 is the fusing path schematic diagram in the region to be processed of the layering of workpiece to be processed of the present invention 3rd.
Fig. 6 be the layering of workpiece to be processed of the present invention 4th layering cross-sectional image in the contour line schematic diagram that extracts.
Fig. 7 is the fusing path schematic diagram in the region to be processed of the layering of workpiece to be processed of the present invention 4th.
Fig. 8 is that the region to be processed that workpiece to be processed the 4th is layered is filled using existing fusing path fill method
Fusing path schematic diagram afterwards.
Fig. 9 is the fusing path scanning direction schematic diagram in the region to be processed of the layering of workpiece to be processed of the present invention 4th.
Figure 10 is the mark schematic diagram that present invention scanning turns to section.
Description of reference numerals:
1-outer contour；2-inner outline；3-outline scan line；
4-it is inwardly indented scan line；5-Internal periphery scan line；6-expand outwardly scan line；
7-kernel scan line；8-impeller.
Specific embodiment
A kind of fusing route designing method of high energy beam selective melting shaping as shown in Figure 1, comprises the following steps：
Step one, workpiece to be processed layering cross-sectional image are obtained：Obtain the layering sectional view of the multiple layerings of workpiece to be processed
Picture, and acquired multiple described layering cross-sectional image is stored in data processing equipment；
Multiple layerings are laid from the bottom to top and it is in parallel laying, the thickness of each layering with use high energy
Thickness when beam selective melting manufacturing process is successively melted shaping to the workpiece to be processed is identical；
The layering section of each layering is a region to be processed, and each described layering cross-sectional image is one
The image in the individual region to be processed；The region to be processed is the region that selective melting shaping is carried out using high energy beam, described
High energy beam is electron beam, laser beam or beam-plasma；
Step 2, contour line extraction：Using the data processing equipment and image processing module is called, extract multiple institutes
State the contour line of layering cross-sectional image；The contour line of each layering cross-sectional image is all including the layering cross-sectional image
Outer contour 1 and all inner outlines 2, the outer contour 1 and inner outline 2 are closed curve；
Step 3, the filling of fusing path：Using the data processing equipment and call path fill module, in step one
Multiple regions to be processed carry out the filling of fusing path respectively, obtain the high energy beam scanning road in multiple regions to be processed
Footpath；The high energy beam scanning pattern in each region to be processed includes top layer scanning pattern and kernel scanning pattern；Multiple institutes
The fusing path fill method all same in region to be processed is stated, the filling of fusing path is carried out to region to be processed any one described
When, comprise the following steps：
Step 301, the filling of top layer scanning pattern：According to the current figure for filling region to be processed extracted in step 2
The contour line of picture, is filled to the current top layer scanning pattern for filling region to be processed；Currently fill region to be processed
Image be currently processed image；
The top layer scanning pattern includes the scanning route of all contour lines of currently processed image；
Wherein, every scanning route of the outer contour 1 enters including one along the outer contour 1 in currently processed image
Being inwardly indented for acquisition is swept after the outline scan line 3 and M bars of row scanning carry out being inwardly indented for M time to the outline scan line 3
Retouch line 4, be inwardly indented that scan line 4 is respectively positioned on the inner side of outline scan line 3 and it is arranged from outside to inside described in M bars, adjacent two
It is described be inwardly indented between scan line 4 and outline scan line 3 and M bars described in be inwardly indented in scan line 4 and be located at outermost
The spacing being inwardly indented between scan line 4 be m × d, wherein d is the beam spot diameter, of high energy beam described in step one；M=1-
E, e are the overlapping rate and 0.5≤e ＜ 1 of high energy beam beam spot；M is positive integer and M >=1；Described in the outline scan line 3 and M bars
It is inwardly indented in scan line 4 and is located at the region being inwardly indented between scan line 4 of most inner side currently to be filled region to be processed
An outline scanning area；
Every scanning route of the inner outline 2 is carried out including one along the inner outline 2 in currently processed image
What the Internal periphery scan line 5 and M bars of scanning were obtained after carrying out expanding outwardly for M times to the Internal periphery scan line 5 expands outwardly scanning
Line 6, expands outwardly that scan line 6 is respectively positioned on the outside of Internal periphery scan line 5 and it is arranged from the inside to the outside, adjacent two institutes described in M bars
State and expand outwardly between scan line 6 and Internal periphery scan line 5 and the spacing expanded outwardly between scan line 6 positioned at most inner side
It is m × d；The Internal periphery scan line 5 and positioned at the outermost region expanded outwardly between scan line 6 currently to be filled
One Internal periphery scanning area in region to be processed；
Current all outline scanning areas and all Internal periphery scanning areas composition for filling region to be processed is current
Fill the top layer scanning area in region to be processed；
Step 302, kernel scanning area determine：According to the current top layer scanning for filling region to be processed in step 301
Region, is determined to the current kernel scanning area for filling region to be processed；
The current closed area being located inside the top layer scanning area in region to be processed of filling is internal layer scanning area
Domain, the kernel scanning area is located in the internal layer scanning area and it is to sweep with the gap between the top layer scanning area
Retouch gap, the region of the width of the scanning gap for n × d and residing for it is gap area, wherein n be clearance amendment coefficient and
0.5≤n≤1；The current kernel scanning area and the gap area for filling region to be processed constitutes the internal layer scanning area
Domain；
Step 303, the filling of kernel scanning pattern：Identified current filled region to be processed is interior in step 302
In Nuclear receptor co repressor region, the current kernel scanning pattern for filling region to be processed is filled；
The kernel scanning pattern includes a plurality of kernel scan line 7 being filled in the kernel scanning area, a plurality of institute
State kernel scan line 7 in it is parallel laying and its laid from front to back, between adjacent two kernel scan lines 7 between
Away from being m × d；The kernel scan line 7 is a straight scan line or is divided into by a left side by the Internal periphery scanning area
To the right a plurality of described straight scan line being located along the same line；
Step 304, step 301 to step 303 is repeated several times, until completing the work area all to be added of the workpiece to be processed
The fusing path filling process in domain.
In the present embodiment, the layering section of each layering is its upper surface, and it is the one of the workpiece to be processed
Individual cross section.
The overlapping rate e of high energy beam beam spot is that when being scanned using high energy beam, adjacent two scan route in step 301
High energy beam beam spot lap width accounts for the ratio of high energy beam beam spot diameter,.
In the present embodiment, the data processing equipment is PC.When actually used, the data processing equipment can also be adopted
With equipment such as notebook computer, panel computers.
In the present embodiment, in step 303 after the completion of the filling of kernel scanning pattern, all outline scan lines 3 for being obtained,
All Internal periphery scan lines 5, it is all be inwardly indented scan line 4 and it is all expand outwardly scan line 6 composition filling complete it is current
Fill the fusing path in region to be processed.
When being layered to the workpiece to be processed, divided from the bottom to top along its Z-direction (i.e. vertical height direction)
Layer.In the present embodiment, the quantity of multiple layerings is denoted as N, and wherein N is positive integer and N >=3.
Also, for easy to operate, according to installation position from the bottom to top, N number of layering is numbered.It is N number of described
The numbering of layering is divided into 1 from the bottom to top, 2 ..., N.Because the layering section of layering each described is a region to be processed,
Thus numbering is the region to be processed that the layering section of the layering of i is the layering.Wherein, i be positive integer and i=1,2 ..., N.
When being processed to workpiece to be processed using high energy beam selective melting manufacturing process, from the bottom to top successively to each layering
Region to be processed carry out selective melting shaping respectively, and the region to be processed of any layering is when carrying out selective melting and shaping,
Selective melting shaping is carried out using high energy beam and according to the fusing path in the region to be processed of the layering obtained in step 3.
In the present embodiment, acquired multiple described layering cross-sectional image is stored in data processing equipment in step one
When interior, according to the multiple layering putting in order from the bottom to top, layering cross-sectional image described to multiple is entered respectively by elder generation to rear
Row storage；Wherein, multiple layerings are stored at first positioned at the layering cross-sectional image of the layering of bottommost, and multiple layerings
Layering cross-sectional image positioned at the layering of topmost is finally stored.
In the present embodiment, as shown in Figures 2 and 3, the workpiece to be processed is impeller 8.
In the present embodiment, the thickness of multiple layerings is 1mm.Also, use high energy beam selective melting manufacturing process
When being processed to impeller 8, selective melting shaping is successively carried out from the bottom to top.
In the present embodiment, the beam spot diameter, of the high energy beam is Φ 4mm.Thus, d=4mm.
When actually used, it is also possible to according to specific needs, the beam spot diameter, to the high energy beam is adjusted accordingly.
Also, the high energy beam is electron beam, the high energy beam selective melting manufacturing process for being used mutually should be electron beam choosing
Melt manufacturing process in area.When actually used, the high energy beam can also be laser beam.
When actually used, numbering is that the layering cross-sectional image of the layering of i is denoted as being layered cross-sectional image i, the layering
The quantity that outer contour is extracted in cross-sectional image i is denoted as the inner outline extracted in Si, and the layering cross-sectional image i
Quantity is denoted as si.Wherein, Si is positive integer and Si >=1, and si is positive integer and si >=0, i be positive integer and i=1,2 ..., N.
As shown in figure 4, being carried in the layering cross-sectional image of the 3rd layering (i.e. numbering is 3 layering) of the workpiece to be processed
The quantity for taking out outer contour is 2, and 2 outer contours are respectively the first outer contour and the second outline from outside to inside
Line；Also, it is 2 articles that the 3rd Multi-layer technology goes out the quantity of inner outline, 2 articles of inner outlines are respectively the from outside to inside
One inner outline and the second inner outline.Wherein, first inner outline is located at the first outer contour and the second outer contour
Between, second inner outline is located at second outer contour inner side.(i.e. the 3rd point of the layering section of the 3rd layering
The region to be processed of layer) it is outside region and described second between first outer contour and first inner outline
Region between contour line and second inner outline.
In the present embodiment, according to the method described in step 301 to step 303, to the work area to be added of the described 3rd layering
After the fusing path in domain is filled, Fig. 5 is referred in the fusing path for obtaining the region to be processed of the 3rd layering.
As shown in fig. 6, being carried in the layering cross-sectional image of the 4th layering (i.e. numbering is 4 layering) of the workpiece to be processed
The quantity for taking out outer contour is 1, and the outer contour is the 3rd outer contour；4th Multi-layer technology goes out inner outline
Quantity be 1, and the inner outline be the 3rd inner outline.It is described 4th layering layering section (the i.e. the 4th layering treat
Machining area) it is region between the 3rd outer contour and the 3rd inner outline.
In the present embodiment, according to the method described in step 301 to step 303, to the work area to be added of the described 4th layering
After the fusing path in domain is filled, the fusing path in the region to be processed of the 4th layering is obtained, refer to Fig. 7.
In the present embodiment, in step 2 to each described be layered cross-sectional image contour line extract after, be both needed to institute
The plan-position data of all contour lines for extracting synchronize storage；The plan-position data of every contour line are wrapped
Include the two-dimensional plane coordinate data of the multiple images point on this contour line.
Also, when carrying out contour line extraction in step 2, extracted using conventional contour line extraction method.
In the present embodiment, the M=1 described in step 301 or 2.
When actually used, can according to specific needs, the value to M is adjusted accordingly, and 1≤M≤5.
" being inwardly indented " described in step 301, refers to be inwardly indented the size for reducing element；It is described " to extending out
", also referred to as " evagination ", it is directed to the size of outer expansion element.
In the present embodiment, when external profile scan line 3 is inwardly indented in step 301, using the straight bone of plane polygon
Frame algorithm is inwardly indented.
Also, when being inwardly indented using the straight Framework Arithmetic of plane polygon, calculated with the straight skeleton of plane polygon first
Method generates the straight skeleton of plane polygon of the outline scan line 3, and the straight skeleton of the plane polygon is made up of many straight skeletons；Again
Based on be pre-designed be inwardly indented distance (i.e. m × d), travel through generation all straight skeleton, and on every straight skeleton to
(i.e. calculated point is located at the straight skeleton inner side of the root and its distance with the straight skeleton of the root inside to obtain the point that distance is m × d distances
It is m × d), it is the point of m × d distances then to travel through every straight skeleton and distance is inwardly obtained to each straight skeleton, is asked all
The traversal order of pressing for going out is coupled together by elder generation after, and the profile scan line that composition is inwardly indented once (is inwardly indented scanning
Line 4)；Then, then based on new profile scan line (being inwardly indented scan line 4 of i.e. last generation) build plane polygon straight
Skeleton is used to continue to be inwardly indented；The like, generation ecto-entad lay M bars be inwardly indented scan line 4, every time indentation away from
From being m × d.So, just can obtain be inwardly indented scan line 4 described in the M bars that external profile scan line 3 is inwardly indented.
It is easy to operate and realization convenience, it would however also be possible to employ (i.e. CDR is soft for CAD, CorelDRAW software when actually used
Part) etc. image processing software, external profile scan line 3 is inwardly indented.Such as it is inwardly indented using CorelDRAW softwares
When, inwardly being offset from the external profile scan line 3 of offset commands, offset distance is M ' × m × d.During practical operation, selection
" contour line " instrument, and " inside " skew is selected, while being set to offset distance, external profile scan line 3 just can be obtained
What is be inwardly indented is inwardly indented scan line 4.Wherein, M ' be positive integer and M '=1,2 ..., M.
As shown in figure 5, when being inwardly indented to first outer contour, M=2.Also, relatively described first foreign steamer
For profile, the distance being inwardly indented twice respectively m × d and 2m × d.Second outer contour is inwardly indented
When, M=1, and the distance being inwardly indented is m × d.
As shown in fig. 7, when being inwardly indented to the 3rd outer contour, M=2.Also, relatively described first foreign steamer
For profile, the distance being inwardly indented twice respectively m × d and 2m × d.
In the present embodiment, when internal profile scan line 5 is expanded outwardly in step 301, using the straight bone of plane polygon
Frame algorithm is expanded outwardly.
Also, when being expanded outwardly using the straight Framework Arithmetic of plane polygon, calculated with the straight skeleton of plane polygon first
Method generates the straight skeleton of plane polygon of the Internal periphery scan line 5, and the straight skeleton of the plane polygon is made up of many straight skeletons；Again
Based on be pre-designed be inwardly indented distance (i.e. m × d), travel through generation all straight skeleton, and on every straight skeleton to
(i.e. calculated point is located at the straight skeleton outside of the root and its distance with the straight skeleton of the root to obtain the point that distance is m × d distances outward
It is m × d), it is the point of m × d distances then to travel through every straight skeleton and distance is outwards obtained to each straight skeleton, is asked all
The traversal order of pressing for going out is coupled together by elder generation after, and the profile scan line that composition is expanded outwardly once (expands outwardly scanning
Line 6)；Then, then based on new profile scan line (the expanding outwardly scan line 6 of i.e. last generation) build plane polygon straight
Skeleton is used to continue to expand outwardly；The like, the M bars laid from inside to outside of generation expand outwardly scan line 6, every time expansion away from
From being m × d.So, just can obtain expand outwardly scan line 6 described in the M bars that internal profile scan line 5 is expanded outwardly.
When actually used, the straight Framework Arithmetic of plane polygon for being used is conventional algorithm, used be inwardly indented with
The method of expanding outwardly is the conventional method of the straight Framework Arithmetic of plane polygon.
In actual use, be easy to operate and realization is convenient, it would however also be possible to employ CAD, CorelDRAW software (i.e. CDR
Software) etc. image processing software, internal profile scan line 5 expanded outwardly.Such as carried out to extending out using CorelDRAW softwares
Zhang Shi, is outwards offset from the internal profile scan line 5 of offset commands, and offset distance is M ' × m × d.During practical operation, choosing
" contour line " instrument is selected, and selects " outside " skew, while being set to offset distance, just can obtain internal profile scan line
5 be inwardly indented expand outwardly scan line 6.
As shown in figure 5, when being expanded outwardly to first inner outline, M=2.Also, relatively described first lubrication groove
For profile, the distance for expanding outwardly twice respectively m × d and 2m × d.Second inner outline is inwardly indented
When, M=1, and the distance for expanding outwardly respectively m × d.
As shown in fig. 7, when being expanded outwardly to the 3rd inner outline, M=2.Also, relatively described 3rd lubrication groove
For profile, the distance for expanding outwardly twice respectively m × d and 2m × d.
When carrying out kernel scanning area in the present embodiment, in step 302 and determining, first outer contour and the first lubrication groove
There is kernel scanning area between profile, and the kernel scanning area is scanned with outline residing for first outer contour
Spacing between region and Internal periphery scanning area residing for the first inner outline is n × d.
Do not exist kernel scanning area between second outer contour and the second inner outline, reason is described second
Spacing≤4m × d between outer contour and the second inner outline, the region does not have the space of kernel scanning area.Thus, institute
Stating in be not filled by between outline scanning area and outline scanning area residing for the second inner outline residing for the second outer contour
Nuclear receptor co repressor line 7.Reason is, high energy beam current along outline scan line 3, be inwardly indented scan line 4, Internal periphery scan line 5 and to
Outer expansion scan line 6 melts and has made the region fully sintered, then in the regional planning fusing path region can be caused to superfuse.
Correspondingly, when carrying out kernel scanning area in step 302 and determine, the 3rd outer contour and the 3rd inner outline
Between there is kernel scanning area, and the kernel scanning area and outline scanning area residing for the 3rd outer contour
And the 3rd spacing between Internal periphery scanning area residing for inner outline is n × d.
Thus, when the filling of fusing path is carried out to outer contour, the method inwardly equidistantly filled using M times；And to lubrication groove
When profile carries out the filling of fusing path, the method outwards equidistantly filled using M times.To remaining space (i.e. described kernel scanning area
Domain) fusing path when being filled, be filled using straight line.
Fig. 7 and Fig. 8 are carried out into contrast discovery, using in the fusing path that the present invention is designed, to the thin of workpiece to be processed
Wall region (region between such as the second outer contour and the second inner outline), between top layer region and top layer and kernel
Region all done optimization design, the surface quality of drip molding can be improved in reality processing；And existing fusing path design
Method does not consider these, and the surface superfusion rate of drip molding is very high in reality processing, causes surface quality very poor.
In the present embodiment, outline scan line described in step 301 3, Internal periphery scan line 5, the and of scan line 4 is inwardly indented
Expand outwardly scan line 6 and be top layer scan line；When top layer scanning pattern filling is carried out in step 301, the data processing sets
It is standby to synchronize storage to the plan-position data of all top layer scan lines；Every plan-position number of the top layer scan line
According to the two-dimensional plane coordinate data included positioned at multiple images point in the scan line of this top layer；
When the filling of kernel scanning pattern is carried out in step 303, the data processing equipment need to be to all straight scan lines
Plan-position data synchronize storage；Including being located at, this is straight to sweep every plan-position data of the straight scan line
Retouch the two-dimensional plane coordinate data of multiple images point on line；
In step 303 after the filling of kernel scanning pattern, current all top layer scan lines for filling region to be processed are put down
The plan-position data of face position data and all straight scan lines, the current scanning pattern letter for filling region to be processed of composition
Breath；
It is described after the fusing path filling process in the region all to be processed that the workpiece to be processed is completed in step 304
Data processing equipment is by the scanning pattern information output in all regions to be processed.
In the present embodiment, as shown in figure 9, when top layer scanning pattern filling is carried out in step 301, also needing to all outlines
Scan line 3, all Internal periphery scan lines 5, all it is inwardly indented scan line 4 and all scanning directions for expanding outwardly scan line 6
It is labeled；
It is inwardly indented described in M bars in scan line 4 and is inwardly indented the scanning direction of scan line 4 conversely, institute described in adjacent two
State to be inwardly indented described in outline scan line 3 and M bars in scan line 4 and be located at the outermost scanning side for being inwardly indented scan line 4
To opposite；
The scanning direction phase of scan line 6 is expanded outwardly in every scanning route of the inner outline 2 described in adjacent two
Instead, and described in the Internal periphery scan line 5 and M bars expand outwardly be located at most inner side in scan line 6 expand outwardly scan line 6
Scanning direction is opposite；
When carrying out the filling of kernel scanning pattern in step 303, also need to enter rower to the scanning direction of all kernel scan lines 7
Note；
The scanning direction of adjacent two kernel scan lines 7 is opposite.
In Fig. 9, the direction of arrow represents scanning direction, and the scanning direction of the outline scan line 3 is counterclockwise, positioned at it
The scanning direction that scan line 4 is inwardly indented described in two of inner side is respectively clockwise and anticlockwise from outside to inside.The lubrication groove
The scanning direction of wide scan line 5 is counterclockwise, and the scanning direction of scan line 6 is expanded outwardly described in two on the outside of it by interior
It is respectively clockwise and anticlockwise to outer.In actual use, the scanning direction of the outline scan line 3 can also be suitable
Hour hands, correspondingly, the scanning direction of the Internal periphery scan line 5 can also be clockwise.
Also, the scanning direction of adjacent two kernel scan lines 7 is respectively from left to right and from right to left.
When the filling of kernel scanning pattern is carried out in the present embodiment, in step 303, also need to a plurality of kernel scan line 7
Scanning sequencing be labeled；The scanning sequencing of a plurality of kernel scan line 7 is by forward direction according to installation position
Scanned one by one afterwards or from the front to the back.
For mark is easy, it is labeled by the way of numbering, as shown in figure 9, the scanning of a plurality of kernel scan line 7
Sequencing is to be scanned one by one from the front to the back according to installation position.Correspondingly, the scanning elder generation of a plurality of kernel scan line 7
Afterwards serial number be respectively 1., 2., 3. ....
Meanwhile, also need to be labeled the scanning sequencing of every scanning route of contour line respectively.
In the present embodiment, for outer contour described in any bar, first externally profile scan line 3 is scanned, then presses
It is scanned respectively to being inwardly indented scan line 4 described in M bars to rear as elder generation according to order from outside to inside.Also, for any bar
For the inner outline, first internally profile scan line 5 is scanned, according still further to order from the inside to the outside by elder generation to rear to M bars
The scan line 6 that expands outwardly is scanned respectively.
In the present embodiment, the kernel scan line 7 for being located at most front side in step 303 in a plurality of kernel scan line 7 is preceding
Side scan line and positioned at most rear side kernel scan line 7 be rear side scan line, in a plurality of kernel scan line 7 be located at it is described before
Kernel scan line 7 between side scan line and the rear side scan line is interscan line；
Every the kernel scan line 7 is divided into three scanning sections from the front to the back according to scanning direction, is swept described in three
Retouch sections and be respectively anterior Scanning Section, middle part Scanning Section and rear portion Scanning Section from the front to the back；
When the scanning sequencing of a plurality of kernel scan line 7 is to be scanned one by one from the front to the back according to installation position
When, the rear portion Scanning Section of the front side scan line is scanning steering section, and the anterior Scanning Section of the rear side scan line turns to scan
Scanning is to the anterior Scanning Section and rear portion Scanning Section of section, and the every interscan line turn to section；
When the scanning sequencing of a plurality of kernel scan line 7 is to be scanned one by one from the front to the back according to installation position
When, the anterior Scanning Section of the front side scan line is scanning steering section, and the rear portion Scanning Section of the rear side scan line turns to scan
Scanning is to the anterior Scanning Section and rear portion Scanning Section of section, and the every interscan line turn to section；
When the filling of kernel scanning pattern is carried out in step 303, two end points for turning to sections to all scannings are also needed to enter respectively
Rower is noted, and the two-dimensional plane coordinate data of two end points for turning to section to scanning each described synchronize record respectively.
In the present embodiment, the length that the scanning turns to section is D, and wherein D=t × d, t are steering section correction factor and t=
0.5~5.
When reality carries out selective melting shaping to any one region to be processed, using the high energy beam by sweeping for being pre-designed
Retouch sequencing and scanning direction is scanned, complete selective melting process.
In the present embodiment, first the outline scanning area is scanned, then the Internal periphery scanning area is carried out
Scanning, is finally scanned to the kernel scanning area.
Wherein, when being scanned to the outline scanning area, according to the scanning sequencing being pre-designed and scanning
Direction, using the high energy beam is along outline scan line 3 and is inwardly indented scan line 4 and is scanned respectively, and completes fusing.It is right
When the Internal periphery scanning area is scanned, according to the scanning sequencing being pre-designed and scanning direction, using the height
Beam is along Internal periphery scan line 5 and expands outwardly scan line 6 and is scanned respectively, and completes fusing.
As shown in Figure 10, when selective melting shaping is carried out to the kernel scanning area, using the high energy beam by advance
The scanning sequencing of design and and scanning direction, swept one by one along a plurality of kernel scan line 7 using the high energy beam
Retouch.Wherein, it is to be scanned to described during being scanned to a kernel scan line 7 along scanning direction from left to right
When scanning turns to forward terminal (i.e. the point A) of section, the power for starting to reduce the high energy beam (or improves the scanning speed of the high energy beam
Degree) until scanning turns to the aft terminal (i.e. point B) of section to the scanning；Then, the high energy beam is jumped to described in next
The scanning of kernel scan line 7 turns to the forward terminal (i.e. point C) of section, continues to scan on to the scanning and turns to the aft terminal of section
(i.e. point D), then replys the power (or recovering the sweep speed of the high energy beam) of high energy beam described in power.By that analogy, it is complete
Into the selective melting forming process of the kernel scanning area.
When the layering cross-sectional image of the multiple layerings of workpiece to be processed is obtained in the present embodiment, in step one, first obtain described
The three-dimensional stereo model of workpiece to be processed, and the three-dimensional stereo model is stored to the data processing equipment；Recall
Described image processing module is layered to the three-dimensional stereo model from the bottom to top, and obtains the layering section of multiple layerings
Face image.
Also, the form of the three-dimensional stereo model is STL forms.
As shown in the above, when carrying out the design of fusing path using the present invention, the three of the workpiece to be processed are first obtained
Dimension three-dimensional model, then the closed contour in the layering section that the workpiece to be processed is respectively layered is extracted, and it is outer to what is extracted
Contour line 1 carries out inwardly equidistant indentation filling and outwards equidistant indentation filling is carried out to inner outline 2, while entering to scanning direction
Rower is noted, generation top layer fusing path；Afterwards, internal Nuclear receptor co repressor region is filled using equidistant line, and to scanning sequencing
It is labeled respectively with scanning direction.During reality processing, the scanning route direction to the adjacent two kernel scan lines 7 is carried out
During change, turn to section according to the scanning of setting and be changed, when being scanned to the scanning steering section, using the reduction height
The mode of the power (or improving the sweep speed of the high energy beam) of beam is scanned.
The above, is only presently preferred embodiments of the present invention, and not the present invention is imposed any restrictions, every according to the present invention
Any simple modification, change and equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (10)
1. the fusing route designing method that a kind of high energy beam selective melting shapes, it is characterised in that：The method is comprised the following steps：
Step one, workpiece to be processed layering cross-sectional image are obtained：The layering cross-sectional image of the multiple layerings of workpiece to be processed is obtained, and
Acquired multiple described layering cross-sectional image is stored in data processing equipment；
Multiple layerings are laid from the bottom to top and it is in parallel laying, and the thickness of each layering is selected with using high energy beam
Thickness when area's fusing manufacturing process is successively melted shaping to the workpiece to be processed is identical；
The layering section of each layering is a region to be processed, and each described layering cross-sectional image is an institute
State the image in region to be processed；The region to be processed is the region that selective melting shaping is carried out using high energy beam, the high energy
Beam is electron beam, laser beam or beam-plasma；
Step 2, contour line extraction：Using the data processing equipment and image processing module is called, extracted described in multiple point
The contour line of layer cross section image；The contour line all foreign steamers including the layering cross-sectional image of each layering cross-sectional image
Profile (1) and all inner outlines (2), the outer contour (1) and inner outline (2) are closed curve；
Step 3, the filling of fusing path：Using the data processing equipment and path is called to fill module, to multiple in step one
The region to be processed carries out the filling of fusing path respectively, obtains the high energy beam scanning pattern in multiple regions to be processed；Often
The high energy beam scanning pattern in the individual region to be processed includes top layer scanning pattern and kernel scanning pattern；It is multiple described to be added
The fusing path fill method all same in work area domain, when the filling of fusing path is carried out to region to be processed any one described, including
Following steps：
Step 301, the filling of top layer scanning pattern：According to the current image for filling region to be processed extracted in step 2
Contour line, is filled to the current top layer scanning pattern for filling region to be processed；The current figure for filling region to be processed
As being currently processed image；
The top layer scanning pattern includes the scanning route of all contour lines of currently processed image；
Wherein, every scanning route of the outer contour (1) includes one along the outer contour (1) in currently processed image
It is inside that the outline scan line (3) and M bars being scanned are obtained after carrying out being inwardly indented for M times to the outline scan line (3)
Indentation scan line (4), is inwardly indented that scan line (4) is respectively positioned on outline scan line (3) inner side and it is arranged from outside to inside described in M bars
Row, be inwardly indented described in adjacent two between scan line (4) and outline scan line (3) and M bars described in be inwardly indented scanning
M × d is positioned at the outermost spacing being inwardly indented between scan line (4) in line (4), wherein d is high described in step one
The beam spot diameter, of beam；M=1-e, e are the overlapping rate and 0.5≤e ＜ 1 of high energy beam beam spot；M is positive integer and M >=1；It is described outer
Being inwardly indented between scan line (4) positioned at most inner side in scan line (4) is inwardly indented described in profile scan line (3) and M bars
An outline scanning area of the region by current filling region to be processed；
Every scanning route of the inner outline (2) is carried out including one along the inner outline (2) in currently processed image
What the internal profile scan line (5) of Internal periphery scan line (5) and M bars of scanning obtained after expand outwardly for M times expand outwardly sweeps
Retouch line (6), expand outwardly that scan line (6) is respectively positioned on Internal periphery scan line (5) outside and it is arranged from the inside to the outside, phase described in M bars
Expanded outwardly described in adjacent two between scan line (6) and Internal periphery scan line (5) be located at most inner side expand outwardly scanning
Spacing between line (6) is m × d；The Internal periphery scan line (5) be located at it is outermost expand outwardly scan line (6) it
Between region by current filling region to be processed an Internal periphery scanning area；
Current all outline scanning areas and all Internal periphery scanning areas composition for filling region to be processed is currently filled out
Fill the top layer scanning area in region to be processed；
Step 302, kernel scanning area determine：According to the current top layer scanning area for filling region to be processed in step 301,
The current kernel scanning area for filling region to be processed is determined；
The current closed area being located inside the top layer scanning area in region to be processed of filling is internal layer scanning area, institute
Kernel scanning area is stated in the internal layer scanning area and itself and the gap between the top layer scanning area are scanning room
Gap, the width of the scanning gap is n × d and the region residing for it is gap area, and wherein n is clearance amendment coefficient and 0.5
≤n≤1；The current kernel scanning area and the gap area for filling region to be processed constitutes the internal layer scanning area；
Step 303, the filling of kernel scanning pattern：The kernel in identified current filled region to be processed is swept in step 302
Retouch in region, the current kernel scanning pattern for filling region to be processed is filled；
The kernel scanning pattern includes a plurality of kernel scan line (7) being filled in the kernel scanning area, a plurality of described
Kernel scan line (7) in it is parallel laying and its laid from front to back, between adjacent two kernel scan lines (7)
Spacing is m × d；The kernel scan line (7) is divided into for a straight scan line or by the Internal periphery scanning area
The a plurality of described straight scan line being located along the same line from left to right；
Step 304, step 301 to step 303 is repeated several times, until completing the region all to be processed of the workpiece to be processed
Fusing path filling process.
2. the fusing route designing method for being shaped according to a kind of high energy beam selective melting described in claim 1, it is characterised in that：
Acquired multiple described layering cross-sectional image is stored in when in data processing equipment in step one, according to described in multiple points
Layer putting in order from the bottom to top, layering cross-sectional images described to multiple are stored respectively by elder generation to rear；Wherein, it is multiple described
The layering cross-sectional image for being layered the layering positioned at bottommost is stored at first, and the multiple layering dividing positioned at the layering of topmost
Layer cross section image is finally stored.
3. the fusing route designing method for being shaped according to a kind of high energy beam selective melting described in claim 1 or 2, its feature exists
In：In step 2 to each described be layered cross-sectional image contour line extract after, be both needed to all profiles to being extracted
The plan-position data of line synchronize storage；Every plan-position data of the contour line include being located at this contour line
The two-dimensional plane coordinate data of upper multiple images point.
4. the fusing route designing method for being shaped according to a kind of high energy beam selective melting described in claim 3, it is characterised in that：
Outline scan line described in step 301 (3), Internal periphery scan line (5), it is inwardly indented scan line (4) and expands outwardly scanning
Line (6) is top layer scan line；When top layer scanning pattern filling is carried out in step 301, the data processing equipment need to be to all
The plan-position data of top layer scan line synchronize storage；Every the plan-position data of the top layer scan line include position
In the two-dimensional plane coordinate data of multiple images point in the scan line of this top layer；
When the filling of kernel scanning pattern is carried out in step 303, the data processing equipment need to be to the plane of all straight scan lines
Position data synchronizes storage；Every plan-position data of the straight scan line include being located at the straight scan line of this
The two-dimensional plane coordinate data of upper multiple images point；
In step 303 after the filling of kernel scanning pattern, the plane position of the current all top layer scan lines for filling region to be processed
Put the plan-position data of data and all straight scan lines, the current scanning pattern information for filling region to be processed of composition；
After the fusing path filling process in the region all to be processed that the workpiece to be processed is completed in step 304, the data
Processing equipment is by the scanning pattern information output in all regions to be processed.
5. the fusing route designing method for being shaped according to a kind of high energy beam selective melting described in claim 1 or 2, its feature exists
In：When top layer scanning pattern filling is carried out in step 301, also need to all outline scan lines (3), all Internal periphery scan lines
(5) it is, all to be inwardly indented scan line (4) and all scanning directions for expanding outwardly scan line (6) are labeled；
It is inwardly indented described in M bars in scan line (4) and is inwardly indented the scanning direction of scan line (4) conversely, institute described in adjacent two
State to be inwardly indented described in outline scan line (3) and M bars in scan line (4) and be located at the outermost scan line (4) that is inwardly indented
Scanning direction is opposite；
The scanning direction phase of scan line (6) is expanded outwardly in every scanning route of the inner outline (2) described in adjacent two
Instead, and described in the Internal periphery scan line (5) and M bars expand outwardly be located at most inner side in scan line (6) expand outwardly scanning
The scanning direction of line (6) is opposite；
When carrying out the filling of kernel scanning pattern in step 303, also need to enter rower to the scanning direction of all kernel scan lines (7)
Note；
The scanning direction of adjacent two kernel scan lines (7) is opposite.
6. the fusing route designing method for being shaped according to a kind of high energy beam selective melting described in claim 5, it is characterised in that：
When carrying out the filling of kernel scanning pattern in step 303, also need to carry out the scanning sequencing of a plurality of kernel scan line (7)
Mark；The scanning sequencing of a plurality of kernel scan line (7) is to be carried out from the front to the back or from the front to the back according to installation position
Scan one by one.
7. the fusing route designing method for being shaped according to a kind of high energy beam selective melting described in claim 6, it is characterised in that：
The kernel scan line (7) of most front side is located in step 303 in a plurality of kernel scan line (7) for front side scan line and positioned at most
The kernel scan line (7) of rear side is rear side scan line, and the front side scan line and institute are located in a plurality of kernel scan line (7)
The kernel scan line (7) stated between rear side scan line is interscan line；
Every the kernel scan line (7) is divided into three scanning sections, three scannings from the front to the back according to scanning direction
Sections is respectively anterior Scanning Section, middle part Scanning Section and rear portion Scanning Section from the front to the back；
When the scanning sequencing of a plurality of kernel scan line (7) is to be scanned one by one from the front to the back according to installation position
When, the rear portion Scanning Section of the front side scan line is scanning steering section, and the anterior Scanning Section of the rear side scan line turns to scan
Scanning is to the anterior Scanning Section and rear portion Scanning Section of section, and the every interscan line turn to section；
When the scanning sequencing of a plurality of kernel scan line (7) is to be scanned one by one from the front to the back according to installation position
When, the anterior Scanning Section of the front side scan line is scanning steering section, and the rear portion Scanning Section of the rear side scan line turns to scan
Scanning is to the anterior Scanning Section and rear portion Scanning Section of section, and the every interscan line turn to section；
When the filling of kernel scanning pattern is carried out in step 303, two end points for turning to sections to all scannings are also needed to enter rower respectively
Note, and the two-dimensional plane coordinate data of two end points for turning to section to scanning each described synchronize record respectively.
8. the fusing route designing method for being shaped according to a kind of high energy beam selective melting described in claim 7, it is characterised in that：
The length that the scanning turns to section is D, and wherein D=t × d, t are steering section correction factor and t=0.5~5.
9. the fusing route designing method for being shaped according to a kind of high energy beam selective melting described in claim 1 or 2, its feature exists
In：M=1 described in step 301 or 2.
10. the fusing route designing method for being shaped according to a kind of high energy beam selective melting described in claim 1 or 2, its feature
It is：When the layering cross-sectional image of the multiple layerings of workpiece to be processed is obtained in step one, the three of the workpiece to be processed are first obtained
Dimension three-dimensional model, and the three-dimensional stereo model is stored to the data processing equipment；Recall described image treatment mould
Block is layered to the three-dimensional stereo model from the bottom to top, and obtains the layering cross-sectional image of multiple layerings.
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| CN110918990B (en) * | 2019-12-06 | 2022-05-03 | 西安赛隆金属材料有限责任公司 | Electron beam scanning method, refractory metal member, and selective electron beam melting apparatus |
| CN111215628B (en) * | 2019-12-06 | 2020-11-24 | 西北有色金属研究院 | Planning method for scanning path of 3D printing dot matrix material |
| CN113681894B (en) * | 2020-05-18 | 2023-05-09 | 广东汉邦激光科技有限公司 | Scanning line quality optimization method, scanning line quality optimization device and printer |
| CN112548120B (en) * | 2021-02-19 | 2021-05-18 | 中国航发上海商用航空发动机制造有限责任公司 | Method for additive manufacturing of a part |
| CN113351885B (en) * | 2021-08-11 | 2021-11-30 | 西安赛隆金属材料有限责任公司 | High-energy beam scanning path planning method, additive manufacturing method and device |
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Address after: Room 303-46, building a, Kairui, Fengcheng 12th Road, Xi'an Economic and Technological Development Zone, Shaanxi 710018 Patentee after: Xi'an Sailong Additive Technology Co.,Ltd. Address before: 710,200 Middle section of Jinggao West Road, Jingwei New City New Material Industrial Park, Xi'an Economic and Technological Development Zone, Shaanxi Province Patentee before: XI'AN SAILONG METAL MATERIALS Co.,Ltd. |