Reverse engineering of machining operation planning

Abstract

Computer-aided process planning (CAPP) is becoming increasingly crucial to today's computer-integrated manufacturing (CIM) and rapid production. To automate the process planning, feature-based operation planning systems have been suggested and studied extensively. In such a system, given a machining feature, the operator requires practical machining operation data for the feature. In this research, a system of reverse engineering is proposed to extract machining features and their associated machining operation data. Furthermore, a machining know-how database containing the extracted data is created for future operation planning. Since successful NC programs contain the machining know-how of skilled workers, the system is aimed at extracting the machining know-how data from the NC programs through reverse engineering. The extraction of the machining features and feature topologies has been addressed previously. The present paper deals with the extraction of machining operation data, including operation sequence, cutting conditions, machining type and cutting mode. A prototype of the system is developed and a machining know-how database is generated. The extraction of machining features and their associated machining operations has been veri® ed through a variety of NC programs.

Reverse Engineering Applied to the Teaching of Computer Aided Manufacturing

“…6) To understand and apply computer aided manufacturing (CAM) software, and to obtain the G-code for manufacturing components using CNC machine tool [7].…”

“…On the basis of the virtual 3-dimensional Solidworks model, students designed CNC machining operations by defining: the type of process, the type of operation, cutting parameters, and tool selection. This software enabled the simulation of defined machining operations, where student could verify if they have been correctly defined [7]. The first step was to plan the inside of the model, prior to profiling with the corresponding finishing operation, and final drilling.…”

3d Digitizing Technology in Product Reverse Design

“…RD is widely used in various areas of product development. Examples of the RD applications include: rapid manufacturing of complex components [1]; extracting machining features and machining operations [2]; creating CAD models of the die and machining the die [3]; integrating with product rapid prototyping [4]; and Internet-based applications of product design [5].…”