CN106808681B - A method of improving increasing material manufacturing element precision - Google Patents
A method of improving increasing material manufacturing element precision Download PDFInfo
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- CN106808681B CN106808681B CN201611261645.6A CN201611261645A CN106808681B CN 106808681 B CN106808681 B CN 106808681B CN 201611261645 A CN201611261645 A CN 201611261645A CN 106808681 B CN106808681 B CN 106808681B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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Abstract
The invention belongs to increases material manufacturing technology fields, more specifically, it is related to a kind of method for improving increasing material manufacturing element precision, it is the following steps are included: according to the cross section information of parts to be processed XOY, XOZ and YOZ, part entirety and each layer of slice are subjected to region division, most of region division is main region, and the position with special shape structure is subdivided into secondary regions；According to the whole region division with each layer of part, division scanning filling is carried out to it using non-homogeneous thickness and non-homogeneous sweep span, wherein using larger thickness and the division of larger spacing and scanning filling main region, the thick and smaller spacing of smaller layers is used to divide and scanning filling secondary regions.Method of the invention optimizes precision of the increases material manufacturing technology when forming is with peculiar part, including dimensional accuracy, form accuracy, overcomes the distortion of increases material manufacturing technology shape at special construction, and ensure that forming efficiency.
Description
Technical field
The invention belongs to increases material manufacturing technology fields, more particularly, to a kind of side for improving increasing material manufacturing element precision
Method can be improved the dimensional accuracy and form accuracy of increasing material manufacturing part.
Background technique
The rapid development that increases material manufacturing technology (Additive Manufacturing, abbreviation AM) obtains in recent years, should
Technology is to manufacture entity component using the method that material gradually adds up, i.e., according to zero on computer based on discrete-accumulation principle
Part three dimensional design CAD model carries out hierarchy slicing to its Z-direction (face XOZ and the face YOZ) according to certain thickness using software, obtains
It is scanned filling forming to the two-dimensional silhouette figure (face XOY) of each layer cross section, and according to these profile diagrams, is gradually superimposed into
3 d part is the manufacturing method of a kind of " from bottom to top " relative to traditional material removal-Machining Technology for Cutting.AM technology
Traditional cutter and fixture and multi-step process are not needed, can be produced to fast precise on one device arbitrarily complicated
The part of shape solves the forming of many parts with complex structures to realize part " freely manufacturing ", and greatly reduces
Manufacturing procedure shortens the process-cycle.And product structure is more complicated, and the effect of manufacturing speed is more significant.
However, usually selecting same thickness and sweep span at present during practical increasing material manufacturing, causing part
Precision is not high, especially complicated part.For part, its precision refers not only to size essence after increasing material manufacturing forming
Degree, further includes form accuracy.For some complicated, special structures, such as incline structure, wedge angle, if using fixed point
Thickness degree and sweep span, by not only can because caused by forming dimension deviation, it is also possible to cause to cause the distortion of special shape with
And step effect leads to poor surface roughness, increases post-processing workload.
A series of researchs have been carried out with regard to the precision of increasing material manufacturing part both at home and abroad at present, and have proposed some mention
The method of high-precision and surface quality.It is optimized in terms of scanning mode, for example patent (ZL 201610141354.7) passes through
Contour filling and entity filling are separated, are scanned filling with different power and scanning speed respectively, is guaranteeing densification
Precision is improved under the premise of degree.Patent (ZL 201410678815.5) uses strip-type subregion or checkerboard type partition method, together
When the contour line that outwardly or inwardly deviates within 1mm along workpiece real contour line be scanned.The above method only improves zero
The surface quality of part, there is no improve for the size and shape precision of part.In addition, patent (ZL 201510478131.5) is from three
Set about in terms of dimension image procossing, simulation is corrected using 3-dimensional digital to reduce form error, this method only solves figure side
The error in face, there is no solve error present in practical manufacturing process.Univ Sheffield UK Vora et al.
(AlSi12in-situ alloy formation and residual stress reduction using anchorless
Selective laser melting) and Germany Damien Buchbinder et al. (Investigation on reducing
distortion by preheating during manufacture of aluminum components using
Selective laser melting.Journal of Laser Applications) respectively using preheating powder bed and preheating
The method of substrate reduces the residual stress in manufacturing process, to reduce the warpage of part, improves the shape of part
Precision, but there is no solve for raster filling bring form accuracy problem.Italian Calignano, F. et al. (Design
optimization of supports for overhanging structures in aluminum and titanium
Alloys by selective laser melting) using add and optimization part support method to its form accuracy into
Row improves, and increases manufacturing effort, and removal support also increases the workload of post-processing, so that forming efficiency reduces.Except this
In addition, it is also processed frequently with small thickness and small sweep span in engineering, to obtain high forming accuracy, but this method drops
Low forming efficiency, it is difficult to expanded application.In order to improve the surface quality of formation of parts and not reduce forming efficiency, obtained
EOS Corp. then uses core+thin technology, i.e., part is divided into central area and border area, central area using big thickness,
Big energy input, border area then use small thickness, small energy input.This method can increase substantially the side of formation of parts
Face surface quality, but the dimensional accuracy of its form accuracy and short transverse can not be improved.
Since there are drawbacks described above and deficiency, this field needs to make and further improve, a kind of raising is designed
The method of increasing material manufacturing element precision, can avoid parts with complex structures during fabrication existing special shape distortion with
And step effect leads to poor surface roughness, improves the form accuracy of parts with complex structures and the ruler of short transverse
Very little precision.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of raising increasing material manufacturing element precisions
Method, slicing delamination filling is carried out to workpiece using the non-homogeneous filling spacing of type variable and thickness, using between biggish scanning
Away from demixing scan processing is carried out to part major part region with thickness, using lesser sweep span and thickness to part with spy
The fraction region of different structure or the region of missing carry out demixing scan processing, it is ensured that the form accuracy and ruler of formation of parts
Very little precision.Solve the problems, such as that part forming part height direction dimensional accuracy in the prior art and special shape precision are poor,
While maintaining the efficiency of laser forming process, the form accuracy and dimensional accuracy of formation of parts are improved, post-processing is reduced
Workload improves forming quality and yield rate.
To achieve the above object, according to one aspect of the present invention, it provides and a kind of improves increasing material manufacturing element precision
Method, which is characterized in that specifically includes the following steps:
Its structural model is placed in the three-dimensional seat being made of X, Y and Z axis by the structural model for S1. establishing parts to be processed
In mark system, the machine direction from the bottom to top of parts to be processed is defined as Z axis positive direction；
S2. parts to be processed is carried out cutting and is divided into multiple longitudinal figure layers to be parallel to the section X0Z or the section YOZ,
According to the shape information of parts to be processed figure layer longitudinally in each, if will longitudinally in each figure layer be divided into several main regions I and
A dry secondary regions II will figure layer longitudinally in each according to preset thickness according to the requirement on machining accuracy of parts to be processed
In main region I and secondary regions II carry out slicing delamination respectively；
S3. parts to be processed is divided along perpendicular to Z axis positive direction with ready-portioned thickness in step S2 to carry out slice
Layer obtains the shape information for each lateral figure layer for being parallel to the section XOY in parts to be processed, each lateral figure layer is divided into
Main region III and secondary regions IV, according to the requirement on machining accuracy of part, according to preset sweep span by main region
Domain III and secondary regions IV are divided into several sections；
S4. according to the thickness and sweep span of the figure layer divided in step S2 and S3, each transverse view is filled one by one
Section in layer, and each lateral figure layer is successively processed from bottom to up, finally fabricate out parts to be processed.
It is further preferred that in step s 2, the structure that special shape is had in figure layer longitudinally in each is partitioned into secondary
In region II, other parts are divided into main region I.More comparative test shows for the structure of special shape to be divided to
Secondary regions are finely divided, and can be improved the precision of the processing of special construction part.
Preferably, in step s 2, when carrying out slicing delamination to figure layer longitudinally in each, using different thickness respectively to master
Region I and secondary regions II is wanted to carry out slicing delamination, the thickness in the main region I is greater than the thickness in secondary regions II.
It is more relatively test surfaces, using biggish thickness to main region carry out slicing delamination processing, can guarantee part at
Shape efficiency；And lesser thickness is used to carry out slicing delamination processing to secondary regions, the forming essence of parts to be processed can be optimized
Degree.
It is further preferred that in step s 2, the setting parts to be processed main region I or secondary in figure layer longitudinally in each
The height value of region II is H, and fixed thickness value is T0, N is the number of plies after main region I or the layering of secondary regions II, according to
Formula
A. work as TIt is remainingWhen being 0, the number of plies of the main region I or secondary regions II is N layers, and every layer of thickness is T0；
B. work as TIt is remainingWhen not being 0, the number of plies of the main region I or secondary regions II is N+1 layers, and wherein N layers of thickness is
T0, N+1 layers with a thickness of TIt is remaining。
Specifically, work as TIt is remainingWhen not being 0, map data mining platform can be lost, and loss pattern height is TIt is remainingThe size of numerical value.Therefore, needle
It is optimized when imperfect to map data mining platform in this case, workpiece secondary regions last time is used into special slicing layer
Thickness, slice thickness are remainder size TIt is remaining, can guarantee the dimensional accuracy in parts to be processed Z-direction.
Preferably, in step s 2, the height of secondary regions II described in figure layer is figure layer whole height longitudinally in each
1/3~1/10.More comparative test shows the structure according to parts to be processed, and the ratio of secondary regions is controlled above-mentioned
In range, the efficiency of part processing can be combined and process the precision of part obtained, optimized production process.
Preferably, in step s3, the structure with special shape in each lateral figure layer is partitioned into secondary regions IV
In the middle, other parts are divided into main region III.More comparative test shows for the structure of special shape to be divided to secondary
Region is finely divided, and can be improved the precision of the processing of special construction part.
Preferably, in step s3, when carrying out slicing delamination to each lateral figure layer, distinguished using different sweep spans
Main region III and secondary regions IV are filled, the sweep span in the main region III is greater than in secondary regions IV
Sweep span.More relatively test surfaces carry out slicing delamination processing, energy to main region using biggish sweep span
Enough guarantee part forming efficiency；And use lesser sweep span to secondary regions carry out slicing delamination processing, can optimize to
Process the forming accuracy of part.
Preferably, in step s3, parts to be processed is set in the width value of main region III or secondary regions IV as W,
Sweep span value is D0, N ' is the interval number after main region III or the layering of secondary regions IV, according to formula
A. work as DIt is remainingWhen being 0, the interval number of main region III or secondary regions IV is that N ' is a, and sweep span value is D0；
B. work as DIt is remainingWhen not being 0, the interval numbers of main region III or secondary regions IV is N '+1, and wherein a section N ' is swept
Retouching distance values is D0, the sweep span value in+1 section N ' is DIt is remaining。
Specifically, work as DIt is remainingWhen not being 0, map data mining platform can be lost, and loss pattern height is DIt is remainingThe size of numerical value.Therefore, needle
It is optimized when imperfect to map data mining platform in this case, workpiece secondary regions last time is used into special slicing layer
Thickness, slice thickness are remainder size DIt is remaining, can guarantee the dimensional accuracy in parts to be processed Z-direction.
Preferably, in step s3, the width of secondary regions IV described in each lateral figure layer is figure layer overall width
1/3~1/10.More comparative test shows the structure according to parts to be processed, and the ratio of secondary regions is controlled above-mentioned
In range, the efficiency of part processing can be combined and process the precision of part obtained, optimized production process.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, have the following advantages that and
The utility model has the advantages that
(1) method of the invention carries out slicing delamination filling to workpiece using the non-homogeneous filling spacing of type variable and thickness,
Demixing scan processing is carried out to part major part region using biggish sweep span and thickness, guarantees its forming efficiency；And it is sharp
The region in fraction region or missing with lesser sweep span and thickness to part with special construction carries out layering and sweeps
Retouch processing, it is ensured that the form accuracy and dimensional accuracy of formation of parts.Therefore, the present invention is in the efficiency for maintaining laser forming process
While, improve the form accuracy and dimensional accuracy of formation of parts, reduce post-processing workload, improve forming quality and
Yield rate.
(2) lateral figure layer and longitudinal figure layer are divided into main region and secondary regions, and main region by method of the invention
Thickness or sweep span in domain are greater than the thickness sweep span in secondary sections, using biggish thickness or sweep span to main
Region carries out slicing delamination processing, can guarantee part forming efficiency；And use lesser thickness or sweep span to secondary sections
Domain carries out slicing delamination processing, can optimize the forming accuracy of parts to be processed.It, will be secondary and according to the structure of parts to be processed
The ratio control in region within the above range, can combine the efficiency of part processing and process the precision of part obtained,
Optimized production process.
(3) method of the invention passes through setting one when handling the remainder region of main region and secondary regions
The region of special thickness or sweep span improves Dimension Measurement and form accuracy to avoid the missing of image layer.
(4) method of the invention optimizes precision of the increases material manufacturing technology when forming is with peculiar part, including size
Precision, form accuracy overcome the distortion of increases material manufacturing technology shape at special construction, and main region uses larger thickness
Division processing is carried out with larger sweep span, ensure that forming efficiency.This method also has step simply easy to implement, to equipment
It is of less demanding, be convenient for large-scale promotion the advantages that.
Detailed description of the invention
Fig. 1 is the schematic diagram that the section Z is carried out slicing delamination by uniform layer thickness when embodiment 1 is not optimised, and region b is shape mistake
True position.
Fig. 2 is the schematic diagram that the section XOY is filled by uniform scanning spacing when embodiment 1 is not optimised, and region b is shape
It is distorted position.
Fig. 3 is the schematic diagram that the section embodiment 1Z carries out slicing delamination using non-homogeneous thickness, and 5 be design profile, and 6 be real
Border profile.
Fig. 4 is the schematic diagram that the section embodiment 1XOY uses non-homogeneous sweep span to be filled.
Fig. 5 is the schematic diagram that the section XOY is filled by uniform scanning spacing when embodiment 2 is not optimised, and region b is shape
It is distorted position.
Fig. 6 is the schematic diagram that the section embodiment 2XOY uses non-homogeneous sweep span to be filled.
The schematic diagram that Fig. 7 finally optimizes Z-direction dimensional accuracy using special thickness when being figure layer missing.
In all the appended drawings, identical appended drawing reference is used to denote the same element or structure, in which:
1- main region I, 2- secondary regions II, 3- main region III, 4- secondary regions IV, 5- design profile, 6- are practical
Profile, a- main body section, b- shape distortion position.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
As shown in fig. 3 to 7, the present invention provides a kind of method for improving increasing material manufacturing element precision, following step is specifically included
It is rapid:
Its structural model is placed in the three-dimensional seat being made of X, Y and Z axis by the structural model for S1. establishing parts to be processed
In mark system, the machine direction from the bottom to top of parts to be processed is defined as Z axis positive direction；
S2. parts to be processed is carried out cutting and is divided into multiple longitudinal figure layers to be parallel to the section X0Z or the section YOZ,
According to the shape information of parts to be processed figure layer longitudinally in each, if will longitudinally in each figure layer be divided into several main regions I and
A dry secondary regions II will figure layer longitudinally in each according to preset thickness according to the requirement on machining accuracy of parts to be processed
In main region I and secondary regions II carry out slicing delamination respectively；
S3. parts to be processed is divided along perpendicular to Z axis positive direction with ready-portioned thickness in step S2 to carry out slice
Layer obtains the shape information for each lateral figure layer for being parallel to the section XOY in parts to be processed, each lateral figure layer is divided into
Main region III and secondary regions IV, according to the requirement on machining accuracy of part, according to preset sweep span by main region
Domain III and secondary regions IV are divided into several sections；
S4. according to the thickness and sweep span of the figure layer divided in step S2 and S3, each transverse view is filled one by one
Section in layer, and each lateral figure layer is successively processed from bottom to up, finally fabricate out parts to be processed.
In a preferred embodiment of the invention, in step s 2, special shape will be had in figure layer longitudinally in each
Structure is partitioned into secondary regions II, and other parts are divided into main region I.The structure of special shape is divided to secondary sections
Domain is finely divided, and can be improved the precision of the processing of special construction part.
In another preferred embodiment of the invention, in step s 2, when carrying out slicing delamination to figure layer longitudinally in each,
Slicing delamination is carried out to main region I and secondary regions II respectively using different thickness, the thickness in the main region I is big
Thickness in secondary regions II.Using biggish thickness to main region carry out slicing delamination processing, can guarantee part at
Shape efficiency；And lesser thickness is used to carry out slicing delamination processing to secondary regions, the forming essence of parts to be processed can be optimized
Degree.
In another preferred embodiment of the invention, in step s 2, setting parts to be processed is longitudinally in each in figure layer
Main region I or secondary regions II height value be H, fixed thickness value be T0, N is main region I or secondary regions II
The number of plies after layering, according to formula
A. work as TIt is remainingWhen being 0, the number of plies of the main region I or secondary regions II is N layers, and every layer of thickness is T0；
B. work as TIt is remainingWhen not being 0, the number of plies of the main region I or secondary regions II is N+1 layers, and wherein N layers of thickness is
T0, N+1 layers with a thickness of TIt is remaining。
In another preferred embodiment of the invention, in step s 2, secondary regions II described in figure layer longitudinally in each
Height be figure layer whole height 1/3~1/10.
In another preferred embodiment of the invention, in step s3, special shape will be had in each lateral figure layer
Structure be partitioned into secondary regions IV, other parts are divided into main region III.More comparative test shows will be special
The structure of different shape is divided to secondary regions and is finely divided, and can be improved the precision of the processing of special construction part.
In another preferred embodiment of the invention, in step s3, when carrying out slicing delamination to each lateral figure layer,
Main region III and secondary regions IV are filled respectively using different sweep spans, the scanning in the main region III
Spacing is greater than the sweep span in secondary regions IV.Slicing delamination processing is carried out to main region using biggish sweep span,
It can guarantee part forming efficiency；And lesser sweep span is used to carry out slicing delamination processing to secondary regions, it can optimize
The forming accuracy of parts to be processed.
In another preferred embodiment of the invention, in step s3, in step s3, setting parts to be processed is in master
It wants region III or the width value of secondary regions IV is W, sweep span value is D0, N ' is that main region III or secondary regions IV are layered
Interval number afterwards, according to formula
A. work as DIt is remainingWhen being 0, the interval number of main region III or secondary regions IV is that N ' is a, and sweep span value is D0；
B. work as DIt is remainingWhen not being 0, the interval numbers of main region III or secondary regions IV is N '+1, and wherein a section N ' is swept
Retouching distance values is D0, the sweep span value in+1 section N ' is DIt is remaining。
In another preferred embodiment of the invention, in step s3, secondary regions IV described in each lateral figure layer
Width be figure layer overall width 1/3~1/10.
In order to better explain the present invention, several specific embodiments are given below:
Embodiment 1:
By taking increasing material manufacturing shapes a kind of triangle bodily form part as an example, as depicted in figs. 1 and 2, when using the big layer of conventional method
When the thick progress slicing delamination filling with sweep span, region 2 will appear the distortion of dimensions or shapes in figure, therefore should use non-
Uniform layer thickness and sweep span optimize it, and key step includes:
1, the face XOZ or the face YOZ
As shown in figure 3, major part 15mm below workpiece is drawn according to XOZ the YOZ cross section information of the triangle body part
It is divided into main region I, height value hIt is main, secondary regions II, height value h are divided into close to pointed tip position 5mmIt is secondary.Mainly
Region I carries out slicing delamination using 1mm thickness, and secondary regions II carry out slicing delamination using 0.2mm thickness.Using 0.2mm points
After layer, hence it is evident that actual profile precision is more close to design profile.When special shape wedge angle position thickness is excessive, wedge angle can be made
Shape distortion, and after using 0.2mm layering, angular shape is more accurate.Main region I uses 1mm thickness, mainly for protecting
Demonstrate,prove processing efficiency.
2, the face XOY
As shown in figure 4, according to each layer of XOY cross section information after the above-mentioned triangle body part entirety hierarchy slicing, by work
Main region III is largely divided among part, 3 positions with special shape wedge angle of surrounding are divided into secondary regions IV.It is main
Region III width is wanted to be divided into WIt is mainFor 1.2mm, it is filled using 0.1mm sweep span；IV width of secondary regions is divided into WIt is secondary
0.4mm (be equivalent to part beam overall 1/5) is filled (between IV width of secondary regions and scanning using sweep span 0.06mm
It can be changed according to oneself requirement away from parameter, sweep span is smaller, and precision is higher).Secondary regions IV subtract with sweep span
It is small, fill more complete, so that wedge angle position shape is more accurate.
Embodiment 2:
By taking increasing material manufacturing shapes a kind of cylindrical component as an example, the section XOY is circle, and filling boundary will appear shape
Missing, as shown in region 2 in Fig. 5；It is optimized using the method for non-homogeneous sweep span.In addition, the section part Z is
Rectangle does not consider the problems of form accuracy.
As shown in fig. 6, will largely be divided into main region III, left and right two among workpiece according to part XOY cross section information
Position of 2, the boundary with special shape circular arc is divided into secondary regions IV.III width of main region is divided into WIt is mainFor 1.5mm,
It is filled using 0.15mm sweep span；IV width of secondary regions is divided into WIt is secondary2.5mm (be equivalent to part beam overall 1/8),
It is filled using sweep span 0.04mm.Secondary regions IV are filled more complete with the reduction of sweep span, so that circle
Arc portion position shape is more accurate.
Embodiment 3:
In order to more clearly indicate thickness missing and be improved using the invention to it, using rectangular cross-sectional to it
It is illustrated, as shown in Fig. 7.The rectangular cross-sectional height H is 20.5mm, uses thickness T0=1mm is sliced, according to public affairs
FormulaIt can obtain, N=20, TIt is remaining=0.5mm.Therefore the last layer changes thickness and is sliced, and the thickness after change is big
It is small to be equal to TIt is remaining, to fill up the figure layer of missing, improve the dimensional accuracy of Z-direction.
Method of the invention optimizes increases material manufacturing technology using non-homogeneous thickness and non-homogeneous sweep span, improves
Dimensional accuracy when forming is with special shape of the technology, form accuracy, guarantee that special shape is undistorted, properly increase
Surface smoothness, and ensure that forming efficiency.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (7)
1. a kind of method for improving increasing material manufacturing element precision, which is characterized in that specifically includes the following steps:
The structural model is placed in the three-dimensional system of coordinate being made of X, Y and Z axis by the structural model for S1. establishing parts to be processed
In, the machine direction from the bottom to top of parts to be processed is defined as Z axis positive direction；
S2. parts to be processed is carried out cutting and is divided into multiple longitudinal figure layers to be parallel to the section X0Z or the section YOZ, according to
The shape information of parts to be processed figure layer longitudinally in each figure layer will be divided into several main regions I (1) and several longitudinally in each
A secondary regions II (2) will figure layer longitudinally in each according to preset thickness according to the requirement on machining accuracy of parts to be processed
In main region I (1) and secondary regions II (2) carry out slicing delamination respectively；According to the structure of parts to be processed, will each indulge
Structure into figure layer with special shape is partitioned into secondary regions II (2), and other parts are divided into main region I (1)；
The height value of main region I (1) or secondary regions II (2) of the parts to be processed longitudinally in each in figure layer is set as H, fixed layer
Thickness value is T0, N is the number of plies after main region I (1) or secondary regions II (2) layering, according to formula
A. work as TIt is remainingWhen being 0, the number of plies of the main region I (1) or secondary regions II (2) is N layers, and every layer of thickness is T0；
B. work as TIt is remainingWhen not being 0, the number of plies of the main region I (1) or secondary regions II (2) is N+1 layers, wherein N layers of thickness
For T0, N+1 layers with a thickness of TIt is remaining；
S3. by parts to be processed along perpendicular to Z axis positive direction, slicing delamination is carried out with ready-portioned thickness in step S2, is obtained
It is parallel to the shape information of each lateral figure layer in the section XOY into parts to be processed, each lateral figure layer is divided into mainly
Region III (3) and secondary regions IV (4), according to the requirement on machining accuracy of parts to be processed, according to preset sweep span
Main region III (3) and secondary regions IV (4) are divided into several sections；
S4. it according to the thickness and sweep span of the figure layer divided in step S2 and S3, is filled in each lateral figure layer one by one
Section, and successively process each lateral figure layer from bottom to up, finally fabricate out parts to be processed.
2. the method as described in claim 1, which is characterized in that in step s 2, carry out slicing delamination to figure layer longitudinally in each
When, slicing delamination, the main region I are carried out to main region I (1) and secondary regions II (2) respectively using different thickness
(1) thickness in is greater than the thickness in secondary regions II (2).
3. method according to claim 2, which is characterized in that in step s 2, secondary regions described in figure layer longitudinally in each
The height of II (2) is the 1/3~1/10 of figure layer whole height.
4. method as claimed in claim 3, which is characterized in that in step s3, special form will be had in each lateral figure layer
The structure of shape is partitioned into secondary regions IV (4), and other parts are divided into main region III (3).
5. method as claimed in claim 4, which is characterized in that in step s3, carry out slicing delamination to each lateral figure layer
When, main region III (3) and secondary regions IV (4) are filled respectively using different sweep spans, the main region
Sweep span in III (3) is greater than the sweep span in secondary regions IV (4).
6. method as claimed in claim 5, which is characterized in that in step s3, in step s3, setting parts to be processed exists
The width value of main region III (3) or secondary regions IV (4) is W, and sweep span value is D0, N ' is main region III (3) or secondary
Interval number after wanting region IV (4) to be layered, according to formula
A. work as DIt is remainingWhen being 0, the interval number of the main region III (3) or secondary regions IV (4) is that N ' is a, and sweep span value is
D0；
B. work as DIt is remainingWhen not being 0, the interval number of the main region III (3) or secondary regions IV (4) is N '+1, wherein a area N '
Between sweep span value be D0, the sweep span value in+1 section N ' is DIt is remaining。
7. method as claimed in claim 6, which is characterized in that in step s3, secondary regions described in each transverse direction figure layer
The width of IV (4) is the 1/3~1/10 of figure layer overall width.
Priority Applications (1)
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| US11850661B2 (en) | 2017-08-07 | 2023-12-26 | Eos Gmbh Electro Optical Systems | Method of segmenting object to be manufactured by energy input parameter and passing energy beam across segments |
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