【摘要】：在快速成型工藝中,采用光固化成型和熔融沉積成型進(jìn)行實(shí)體制造時(shí)需要添加支撐,然而添加支撐不合理時(shí)會(huì)造成精度損失。另外不論是CAD模型、STL模型還是點(diǎn)云模型,當(dāng)成型面與成型方向存在一定角度時(shí)就會(huì)產(chǎn)生臺(tái)階效應(yīng),降低成型精度。綜合以上兩方面的考慮,提出了基于任意分層方向的點(diǎn)云模型等厚分層算法,使用MATLAB軟件實(shí)現(xiàn)本算法并進(jìn)行了模擬實(shí)驗(yàn),實(shí)驗(yàn)證明本算法在一定程度上降低了添加支撐不合理和臺(tái)階效應(yīng)引起的精度損失。最后本文引入了模型的失真評(píng)價(jià)指數(shù)來(lái)進(jìn)一步佐證本算法的可靠性。
[Abstract]:In the rapid prototyping process, it is necessary to add the support when the light curing molding and the melt deposition forming are used in the solid manufacturing, but the precision will be lost when the support is not reasonable. In addition, no matter the CAD model, STL model or point cloud model, when there is a certain angle between the forming surface and the forming direction, the step effect will be produced and the forming accuracy will be reduced. Considering the above two aspects, an equal thickness delamination algorithm of point cloud model based on arbitrary stratification direction is proposed. The algorithm is implemented by using MATLAB software and the simulation experiment is carried out. Experiments show that the proposed algorithm can reduce the loss of precision caused by unreasonable support and step effect to some extent. Finally, the distortion evaluation index of the model is introduced to further prove the reliability of the algorithm.
【作者單位】： 內(nèi)蒙古科技大學(xué)機(jī)械工程學(xué)院;
【基金】：內(nèi)蒙古自治區(qū)自然科學(xué)基金資助項(xiàng)目(2017MS(LH)0530) 內(nèi)蒙古自治區(qū)高等學(xué)校研究項(xiàng)目(NJZY16167)
【分類號(hào)】：TH16
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本文編號(hào)：2404727