Dynamic siumlation of high speed machining

• Main Author: 丁健祐
• Other Authors: Hong-Tzong Yau
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/05500558948061853817

碩士 === 國立中正大學 === 機械系 === 89 === While cutting a complicated surface, we always use a large amount of NC codes to approximate it. Hence, how to verify the validity of NC codes is an important question. If discovered the inaccuracy of NC codes until the end of cutting, it would waste time and the expense of material. Therefore, a suit of dependably simulative model can demonstrate the path and the appearance after cutting. Moreover, adding the simulation of single tool path for users to examine the cutting directions could more clearly search for the problem of NC codes for further improvement. Additionally, compared the CAD model with the data after simulation, it is easy to find the tiny error. Furthermore, to add the dynamic errors of machining center while cutting simulation, the model after simulation will be more similar with the real products after actual cut. Taking advantage of the error data could provide users the information to determine if decrease the feed rate of cutting to maintain the demanding cutting validity. Moreover, using the data after error analysis could pick out the under-cutting area. Thus, it could use a small tool to remove the residue to make the model fit the original design. However, due to the limitation of ball-cutter, it''s always has under-cutting area. We find the tool path according to the model’s features to totally clean the under-cutting area.