FINITE ELEMENT BASED FIXTURE ANALYSIS MODEL FOR SURFACE ERROR PREDICTIONS DUE TO CLAMPING AND MACHINING FORCES

Prakash Chandra; Shounak M. Athavale; Shiv G. Kapoor; Richard E. DeVor

doi:10.1115/IMECE1997-1159

FINITE ELEMENT BASED FIXTURE ANALYSIS MODEL FOR SURFACE ERROR PREDICTIONS DUE TO CLAMPING AND MACHINING FORCES

Prakash Chandra, Shounak M. Athavale, Shiv G. Kapoor, Richard E. DeVor

Mechanical Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A finite element model to analyze effect of clamping sequence, clamping pre-loads and machining loads (forces) on the surface error for face-milled workpieces was developed. A compliant test part was used to test and demonstrate the predictive capabilities of the model. Experimental measurements of surface deflections/errors after clamping, and after machining were compared with the finite element predictions. Both predicted peak-to-valley surface error values and surface error patterns for ZXY clamping sequence were in good agreement with the experimental measurements. The effects of fixture compliance, workpiece-fixture contact geometry (point / area contact), and clamping preloads on the surface error predictions were also studied. The clamping preloads have the most significant impact on the surface error during fixturing of flexible parts, followed by effect of contact area geometry. Fixture compliance, however, does not significantly affect the surface error in case of structurally compliant parts.

Original language	English (US)
Title of host publication	Manufacturing Science and Engineering
Subtitle of host publication	Volume 2
Publisher	American Society of Mechanical Engineers (ASME)
Pages	245-252
Number of pages	8
ISBN (Electronic)	9780791826799
DOIs	https://doi.org/10.1115/IMECE1997-1159
State	Published - 1997
Event	ASME 1997 International Mechanical Engineering Congress and Exposition, IMECE 1997 - Manufacturing Science and Engineering - Dallas, United States Duration: Nov 16 1997 → Nov 21 1997

Publication series

Name	ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume	1997-W

Conference

Conference	ASME 1997 International Mechanical Engineering Congress and Exposition, IMECE 1997 - Manufacturing Science and Engineering
Country/Territory	United States
City	Dallas
Period	11/16/97 → 11/21/97

ASJC Scopus subject areas

Mechanical Engineering

Online availability

10.1115/IMECE1997-1159

Library availability

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Chandra, P., Athavale, S. M., Kapoor, S. G., & DeVor, R. E. (1997). FINITE ELEMENT BASED FIXTURE ANALYSIS MODEL FOR SURFACE ERROR PREDICTIONS DUE TO CLAMPING AND MACHINING FORCES. In Manufacturing Science and Engineering: Volume 2 (pp. 245-252). (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE); Vol. 1997-W). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE1997-1159

FINITE ELEMENT BASED FIXTURE ANALYSIS MODEL FOR SURFACE ERROR PREDICTIONS DUE TO CLAMPING AND MACHINING FORCES. / Chandra, Prakash; Athavale, Shounak M.; Kapoor, Shiv G. et al.
Manufacturing Science and Engineering: Volume 2. American Society of Mechanical Engineers (ASME), 1997. p. 245-252 (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE); Vol. 1997-W).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Chandra, P, Athavale, SM, Kapoor, SG & DeVor, RE 1997, FINITE ELEMENT BASED FIXTURE ANALYSIS MODEL FOR SURFACE ERROR PREDICTIONS DUE TO CLAMPING AND MACHINING FORCES. in Manufacturing Science and Engineering: Volume 2. ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE), vol. 1997-W, American Society of Mechanical Engineers (ASME), pp. 245-252, ASME 1997 International Mechanical Engineering Congress and Exposition, IMECE 1997 - Manufacturing Science and Engineering, Dallas, United States, 11/16/97. https://doi.org/10.1115/IMECE1997-1159

Chandra P, Athavale SM, Kapoor SG, DeVor RE. FINITE ELEMENT BASED FIXTURE ANALYSIS MODEL FOR SURFACE ERROR PREDICTIONS DUE TO CLAMPING AND MACHINING FORCES. In Manufacturing Science and Engineering: Volume 2. American Society of Mechanical Engineers (ASME). 1997. p. 245-252. (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)). doi: 10.1115/IMECE1997-1159

Chandra, Prakash ; Athavale, Shounak M. ; Kapoor, Shiv G. et al. / FINITE ELEMENT BASED FIXTURE ANALYSIS MODEL FOR SURFACE ERROR PREDICTIONS DUE TO CLAMPING AND MACHINING FORCES. Manufacturing Science and Engineering: Volume 2. American Society of Mechanical Engineers (ASME), 1997. pp. 245-252 (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)).

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abstract = "A finite element model to analyze effect of clamping sequence, clamping pre-loads and machining loads (forces) on the surface error for face-milled workpieces was developed. A compliant test part was used to test and demonstrate the predictive capabilities of the model. Experimental measurements of surface deflections/errors after clamping, and after machining were compared with the finite element predictions. Both predicted peak-to-valley surface error values and surface error patterns for ZXY clamping sequence were in good agreement with the experimental measurements. The effects of fixture compliance, workpiece-fixture contact geometry (point / area contact), and clamping preloads on the surface error predictions were also studied. The clamping preloads have the most significant impact on the surface error during fixturing of flexible parts, followed by effect of contact area geometry. Fixture compliance, however, does not significantly affect the surface error in case of structurally compliant parts.",

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FINITE ELEMENT BASED FIXTURE ANALYSIS MODEL FOR SURFACE ERROR PREDICTIONS DUE TO CLAMPING AND MACHINING FORCES

Abstract

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