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A generic, geometric approach to accurate machining-error predictions for 3-axis CNC milling of sculptured surface parts.

机译:一种通用的几何方法,可对雕刻的表面零件进行3轴CNC铣削,以精确地预测加工误差。

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摘要

The goal of computer numerical control (CNC) machining for sculptured part finishing is to ensure the required-surface quality while maintaining maximum machining efficiency. This work addresses these challenging and conflicting tasks that demand more research.; In CNC machining, machining errors are usually caused by some of the sources such as cutting tool deflection, cutting tool wear, machine tool vibration, improper coolant, improper lubrication, and negative thermal effect.; In this thesis research work, a generic, geometric approach to predicting accurate machining errors caused by the tool-surface mismatch is proposed for 3-axis sculptured surface milling. To implement this new approach, a cutter contact (CC) point optimization system is also proposed for optimizing CC points along tool paths to ensure adequate surface quality without surface gouging. A semi-cylindrical part and a Non-Uniform Rational B-Spline (NURBS) surface part are used to illustrate this approach and to demonstrate its superiority. (Abstract shortened by UMI.)
机译:用于雕刻零件精加工的计算机数控(CNC)加工的目标是确保所需的表面质量,同时保持最大的加工效率。这项工作解决了这些挑战和矛盾的任务,需要更多的研究。在CNC加工中,加工误差通常是由某些原因引起的,例如切削工具偏斜,切削工具磨损,机床振动,冷却液使用不当,润滑不良和热效应消极。在本文的研究工作中,提出了一种通用的几何方法来预测由刀具表面不匹配引起的精确加工误差,用于三轴雕刻曲面铣削。为了实现这种新方法,还提出了一种刀具接触(CC)点优化系统,用于优化沿刀具路径的CC点,以确保足够的表面质量而不会进行表面气刨。半圆柱形零件和非均匀有理B样条曲线(NURBS)表面零件用于说明此方法并展示其优越性。 (摘要由UMI缩短。)

著录项

  • 作者

    Cai, Wei.;

  • 作者单位

    Concordia University (Canada).;

  • 授予单位 Concordia University (Canada).;
  • 学科 Engineering Industrial.
  • 学位 M.A.Sc.
  • 年度 2006
  • 页码 74 p.
  • 总页数 74
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 一般工业技术;
  • 关键词

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