Stiffness of 5-axis machines with serial, parallel, and hybrid kinematics: Evaluation and comparison

Y. Shneor, V. T. Portman

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

Introduction of parallel kinematics mechanisms in structures of modern machine tools results in resumed development and investigation of stiffness performance indexes. In this paper, a new stiffness-related engineering index - minimum collinear stiffness value (CSV) - is applied for stiffness evaluation of machine tools with different kinematics types. The evaluation embraces both local stiffness values in a given configuration and global stiffness features over all workspace. A dimensionless form is entered as the ratio of the CSV to the stiffness value of a single actuator. Stiffness features of 5-axis machines with serial, parallel, and tripod-based hybrid kinematics are simulated using the developed approach.

Original languageEnglish
Pages (from-to)409-412
Number of pages4
JournalCIRP Annals - Manufacturing Technology
Volume59
Issue number1
DOIs
StatePublished - 1 Apr 2010

Keywords

  • Machine tools
  • Parallel kinematics
  • Stiffness

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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