In this paper, process models are reported for a dynamic system consisting of a polymer/mineral abrasive filamentary brush during an orthogonal deburring operation. Dynamic process models are generated by employing both a viscoelastic representation and Dynamic Data Systems approach for predicting brush response under random penetration depth operating conditions. A process model for material removal is obtained by the use of a multiple regression method in conjunction with experimental results for burr material removal under various brushing conditions. Time constants for both the viscoelastic dynamic system and material removal characteristics of brushes are reported and discussed. An examination of system transfer functions indicates that the system is stable. In addition, generally good agreement is obtained when comparison is made between the process model for burr removal and actual measurement of machined burrs.

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