0
TECHNICAL PAPERS

A Hybrid Analytical, Solid Modeler and Feature-Based Methodology for Extracting Tool-Workpiece Engagements in Turning

[+] Author and Article Information
Jing Zhou

 University of British Columbia, 2324 Main Mall, Vancouver, BC, V6T 1Z4, Canadaevajzhou@mech.ubc.ca

Derek Yip-Hoi

 Western Washington University, 516 High Street, ET 313, Bellingham, WA 98225Derek.Yip-Hoi@wwu.edu

Xuemei Huang

 NRC–IMTI, 800 Collip Circle, London, ON, N6G 4X8, CanadaHuangXu@nrc.ca

An overview of the use of Green’s theorem for area calculations in CAD systems can be found in Zeid (1).

In this research, the ACIS solid modeler a Dessault Systemes product is used to model and manipulate geometry.

J. Comput. Inf. Sci. Eng 7(3), 192-202 (Jan 02, 2007) (11 pages) doi:10.1115/1.2752818 History: Received January 09, 2006; Revised January 02, 2007

In order to optimize turning processes, cutting forces need to be accurately predicted. This in turn requires accurate extraction of the geometry of tool-workpiece engagements (TWE) at critical points during machining. TWE extraction is challenging because the in-process workpiece geometry is continually changing as each tool pass is executed. This paper describes research on a hybrid analytical, solid modeler, and feature-based methodology for extracting TWEs generated during general turning. Although a pure solid modeler-based solution can be applied, it will be shown that because of the ability to capture different cutting tool inserts with similar geometry and to model the process in 2D, an analytical solution can be used instead of the solid modeler in many instances. This solution identifies features in the removal volumes, where the engagement conditions are not changing or changing predictably. This leads to significant reductions in the number of Boolean operations that are executed during the extraction of TWEs and associated parameters required for modeling a turning process. TWE extraction is a critical component of a virtual turning system currently under development.

Copyright © 2007 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Mechanistic force model

Grahic Jump Location
Figure 2

Uncut chip area decomposition

Grahic Jump Location
Figure 3

Two-dimensional cross section of turning process

Grahic Jump Location
Figure 4

Typical cutting tool inserts and generic cutting edge geometry

Grahic Jump Location
Figure 6

Classes of generic tool engagement features (teF)

Grahic Jump Location
Figure 7

Material removal features (mrF) generated during turning

Grahic Jump Location
Figure 8

Transient machining feature (trF)

Grahic Jump Location
Figure 9

Hybrid TWE extraction methodology

Grahic Jump Location
Figure 10

Solid modeler-based simulation methodology

Grahic Jump Location
Figure 11

Tool construction geometry

Grahic Jump Location
Figure 12

MRA decomposition

Grahic Jump Location
Figure 13

Geometry invariant features

Grahic Jump Location
Figure 14

teF extraction from giF

Grahic Jump Location
Figure 15

Four types of form invariant feature fiF

Grahic Jump Location
Figure 16

Area calculation of one example of teF

Grahic Jump Location
Figure 17

Initial workpiece and final part solid models

Grahic Jump Location
Figure 18

Simulation of the machining for various tool paths on example part

Grahic Jump Location
Figure 19

Extracted mrFs for OP2

Grahic Jump Location
Figure 20

teF extraction from fiF

Grahic Jump Location
Figure 5

Classifications of features generated from turning

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In