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Scanning method for material increase manufacturing three-dimensional body

A technology of three-dimensional objects and scanning methods, which is applied in the field of additive manufacturing, can solve the problems of low efficiency during scanning and processing of three-dimensional objects, and achieve the effects of improving scanning processing efficiency, ensuring processing accuracy, and balancing processing accuracy and processing efficiency

Active Publication Date: 2016-06-29
XIAN BRIGHT ADDTIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a scanning method for additively manufacturing three-dimensional objects, which solves the problem of low efficiency during internal scanning and processing of existing three-dimensional objects

Method used

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  • Scanning method for material increase manufacturing three-dimensional body
  • Scanning method for material increase manufacturing three-dimensional body
  • Scanning method for material increase manufacturing three-dimensional body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Further, on the premise of ensuring the processing accuracy of the three-dimensional object 3, in order to further improve the processing efficiency of the three-dimensional object 3, when scanning a slice containing both the surface area 4 and the internal area 6, the small spot heat source 2 follows the scanning path, every After scanning the surface area 4 of the c-layer slice, the large-spot heat source 1 conducts an overall scan of the inner area 6 of the c-layer slice, where c is the multi-layer single-firing coefficient of the inner area 6, and c is an integer. Its specific implementation steps are as follows:

[0031] Step 1: Input the m-layer slice file of the 3D object 3 model, and the surface area 4 threshold L 1 , multi-layer single-firing coefficient c in the inner area 6, the total height H of the three-dimensional object 3 along the Z-axis direction, the thickness of the single-layer slice Δh, the i-th slice is the current slice, where, 1≤i≤m, Indicates...

Embodiment 2

[0039] In order to further improve the processing efficiency of the three-dimensional object 3, after the division of the surface area 4 and the internal area 6 of the single-layer slice of the three-dimensional object 3 is completed, if the cross-sectional width of the profile of the internal area 6 in the X and / or Y directions is less than twice the overlap When the width is wide, the area within the cross-section of the three-dimensional object 6 in the X and / or Y direction whose cross-sectional width is less than twice the overlap width is scanned with a small-spot heat source 2, and the rest of the internal area 6 is scanned with a large-spot heat source 1 scanning. The specific implementation steps are as follows:

[0040] Step 1: Input the m-layer slice file of the 3D object 3 model, and the surface area 4 threshold L 1 , multi-layer single-firing coefficient c in the inner area 6, the total height H of the three-dimensional object 3 along the Z-axis direction, the thi...

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Abstract

The invention discloses a scanning method for a material increase manufacturing three-dimensional body. The scanning method includes the steps that a certain value is set to serve as a three-dimensional body surface layer zone threshold value; then the whole three-dimensional body is divided into a surface layer zone and an internal zone according to the threshold value; small light spot heat source scanning is adopted on the surface layer zone, and large light spot heat source scanning is adopted on the internal zone; and scanning is completed. By means of the scanning method, a user can freely set the surface layer zone thickness threshold value according to the machining requirement, a single-deck section to-be-scanned zone of the three-dimensional body is divided into the surface layer zone and the internal zone, different scanning parameters are further adopted to conduct zone dividing scanning on the surface layer zone and the internal zone, the machining accuracy of the three-dimensional body is guaranteed, and the scanning machining efficiency of the three-dimensional body is improved. The user can further take a scanning strategy that scanning machining of the internal zone is carried out one time after the multi-layer surface layer zone is scanned according to the machining requirement, and the machining accuracy and the machining efficiency are balanced to the maximum degree.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and relates to a scanning method for additively manufacturing a three-dimensional object. Background technique [0002] In the existing technology, when performing layered scanning processing on a solid three-dimensional object, the same laser parameters are used for scanning and processing the area to be scanned in a single-layer slice of the entire part. However, for most solid three-dimensional objects, the The requirements for processing accuracy are far lower than the requirements for the surface accuracy of parts. Using the existing scanning processing method, a lot of time is consumed in the internal scanning processing of three-dimensional objects, especially for large-scale three-dimensional objects, which seriously affects the scanning of three-dimensional objects. Processing efficiency. Contents of the invention [0003] The object of the present invention is to provi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B28B1/00B29C67/00B33Y10/00B33Y50/00
CPCB28B1/001B33Y10/00B33Y50/00B22F10/00B22F10/28B22F10/366Y02P10/25
Inventor 杨东辉薛蕾
Owner XIAN BRIGHT ADDTIVE TECH CO LTD
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