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Helix outline offset filling optimization method and helix outline offset filling optimization system

An optimization method and offset technology, applied in manufacturing auxiliary devices, processing data acquisition/processing, additive processing, etc., can solve problems such as unfavorable mechanism stability and printing speed, and affect printing speed, so as to reduce idle travel and The number of scan head jumps, precision and perfect appearance, the effect of improving printing speed and system stability

Active Publication Date: 2018-09-18
CENT SOUTH UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there will be a large number of conversions between corners and speeds, which is not conducive to the stability of the mechanism and the printing speed
Contour offset filling is generated through the layer-by-layer expansion or contraction of the cross-section contour. Since the cross-section contour and the filling path are arranged in an OFFSET shape, the filling process is more in line with the law of heat transfer, thereby reducing "drawing". However, in the offset curve There are still some unnecessary empty travels between which will affect the printing speed

Method used

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  • Helix outline offset filling optimization method and helix outline offset filling optimization system
  • Helix outline offset filling optimization method and helix outline offset filling optimization system
  • Helix outline offset filling optimization method and helix outline offset filling optimization system

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Embodiment 1

[0032] see figure 1 , the present embodiment provides a spiral profile offset filling optimization method, including the following steps:

[0033] S1: Obtain the 3D model of the 3D entity to be printed, and determine the filling distance d;

[0034] S2: Slicing and layering the 3D model, and extracting the coordinate information of the vertices of the polygon outline that needs to be filled after slicing;

[0035] S3: Using the spiral contour offset algorithm to obtain the offset filling path of each layer of the 3D model in the plane;

[0036] S4: Use the orthogonal decomposition principle to calculate the coordinates of the connecting vertices between the contours for the filling path optimization;

[0037] S5: Replace the original offset filling path with the optimized path, and update the filling path of each layer.

[0038] Specifically, the 3D model file of the 3D entity to be printed is obtained by using commonly used 3D software, and the filling distance is determin...

Embodiment 2

[0050] Corresponding to the above method embodiments, this embodiment provides a spiral contour offset filling optimization system, including a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the program Steps to implement the method described above.

[0051] As mentioned above, the present invention provides a spiral contour offset filling optimization method and system. On the basis that the printer can keep the line speed constant through the orthogonal decomposition of the motion, the straight line corner in the existing spiral offset path is converted into Standard arc corners and path optimization can effectively reduce the idling stroke and the number of scanning head jumps during the printing process, ensure the filling accuracy and perfect appearance, and further improve the printing speed and system stability.

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Abstract

The invention relates to the technical field of printing technology path generation, and discloses a helix outline offset filling optimization method and a helix outline offset filling optimization system, wherein with the method, the system, the idle stroke and the number of the jumping of the scanning head during the printing can be effectively reduced, the filling precision and the perfect appearance can be ensured, and the printing speed and the system stability can be further improved. The helix outline offset filling optimization method comprises: obtaining the three-dimensional model ofa to-be-printed three-dimensional entity, and determining a filling interval d; carrying out slicing layering on the three-dimensional model, and extracting the apex coordinate information of the to-be-filled polygon outline after the slicing; obtaining the offset filling paths of each layer of the three-dimensional model in the plane by using the existing helix outline offset algorithm; calculating the coordinates of the connection apexes between the outlines by using orthogonal decomposition principle according to the apex coordinate information of the outline in the same layer so as to optimize the filling path; and replacing the original offset filling path with the optimized path, and updating the filling paths of each layer.

Description

technical field [0001] The invention relates to the technical field of printing technology path generation, in particular to a spiral contour offset filling optimization method and system. Background technique [0002] In FDM rapid prototyping, the generation algorithm of the scanning path should focus on reducing empty strokes and reducing the number of material withdrawals of the extrusion head. In addition, during the scanning process, there is often a rapid jump from one path to another. It is difficult to precisely control the extrusion head. During the jump process, according to the relative position between paths, there will be two situations: For paths that are not in the same area, due to acceleration and deceleration, etc., there will be " "wire drawing" phenomenon, that is, redundant solidified burrs are generated; for adjacent paths in the same area, the jumping distance is very close, and the jumping path coincides with the contour, there will be no "wire drawin...

Claims

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Application Information

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IPC IPC(8): B29C64/386B33Y50/00
CPCB33Y50/00B29C64/386
Inventor 张俊宋朝霞李丽娇田慧敏
Owner CENT SOUTH UNIV
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