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Composite scanning filling method for quick forming machine

A technology of composite scanning and filling method, which is applied in the field of composite scanning and filling to achieve the effect of improving the precision of parts and increasing the processing speed

Inactive Publication Date: 2008-02-20
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing scanning filling methods have their own advantages, but there is no method that can reduce the warping deformation of the part due to shrinkage stress, reduce the empty stroke distance during the filling process, reduce the number of opening times of the filling device, and improve the accuracy of the part while improving the accuracy of the part. Processing speed, prolong the service life of the laser head or nozzle

Method used

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  • Composite scanning filling method for quick forming machine

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Embodiment Construction

[0010] As shown in the figure, in the rapid prototyping layer process planning, the boundary between the contour offset scanning area and the partition scanning area is firstly determined by computer division, and then the scanning path area is divided for the two scanning areas, and finally the scanning forming is started: The boundary is used as the reference, and the inner and outer contour areas are filled with contour offset, and in other solid areas, partition scanning is used. During scanning, in order to avoid warping and deformation due to the consistent shrinkage stress direction of the scanning lines, an angle of 90° is staggered between the scanning directions of two adjacent sections.

[0011] The area division method adopted in this embodiment is to combine the filling line segments according to the arrangement order of the scanning line intersections, so as to directly form a monotonous filling area. Since we have ensured that the number of intersection points o...

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Abstract

The present invention relates to a compound scanning filling method of a rapid shaping machine, which combines a profile off-set scanning method and a zoning scanning method. The neighboring area of the inner and outer profiles of the manufacturing piece adopts the profile off-set scanning filling, and the zoning scanning filling is adopted in other substantiality areas. The present invention can effectively improve the processing speed of rapid shaping and the precision of the manufacturing piece. The service life of the nozzle or the laser head is prolonged by reducing the starting times of the filling equipment.

Description

technical field [0001] The invention relates to a composite scanning filling method for a rapid prototyping machine. Background technique [0002] At present, the scanning and filling methods of rapid prototyping machines include: reciprocating linear scanning method, contour offset scanning method, fractal scanning method, and partition scanning method. The existing scanning filling methods have their own advantages, but there is no method that can reduce the warping deformation of the part due to shrinkage stress, reduce the empty stroke distance during the filling process, reduce the number of opening times of the filling device, and improve the accuracy of the part while improving the accuracy of the part. Processing speed, prolong the service life of the laser head or nozzle. Contents of the invention [0003] The object of the present invention is to provide a composite scanning filling method for a rapid prototyping machine that combines the advantages of the conto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/08B05D1/40B23K26/082
Inventor 周天瑞潘海鹏蔡冬根张永肖文军
Owner NANCHANG UNIV
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