Research Papers

Manufacturing Signature for Tolerance Analysis

[+] Author and Article Information
Polini Wilma

Dipartimento di Ingegneria Civile e Meccanica,
Università degli Studi di
Cassino e del Lazio Meridionale,
via Gaetano Di Biasio 43,
Cassino 03043, Italy
e-mail: polini@unicas.it

Moroni Giovanni

Politecnico di Milano,
via La Masa 1, Milan 20156, Italy
e-mail: giovanni.moroni@polimi.it

Contributed by the Computers and Information Division of ASME for publication in the JOURNAL OF COMPUTING AND INFORMATION SCIENCE IN ENGINEERING. Manuscript received September 26, 2014; final manuscript received September 28, 2014; published online November 7, 2014. Editor: Bahram Ravani.

J. Comput. Inf. Sci. Eng 15(2), 021005 (Jun 01, 2015) (5 pages) Paper No: JCISE-14-1300; doi: 10.1115/1.4028937 History: Received September 26, 2014; Revised September 28, 2014; Online November 07, 2014

Every manufacturing process leaves on the surface a signature, i.e., a systematic pattern that characterizes all the features machined with that process. The present work investigates the effects of considering the manufacturing signature in solving a tolerance stack-up function. A new variational model was developed that allows to deal with the form tolerance. It was used to solve a case study involving three parts with or without considering the correlation among the points of the same surface due to the manufacturing signature. A sensitivity analysis was developed by considering different values of the applied geometrical tolerances.

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Grahic Jump Location
Fig. 1

New variational model

Grahic Jump Location
Fig. 2

(a) Linear stack-up function and (b) network stack-up function

Grahic Jump Location
Fig. 4

Features of the parts




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