A planner for a self adaptable and reconfigurable fixture system is proposed. The system is composed of mobile support agents that support thin sheet metal parts to minimize part dimensional deformation during drilling and milling operations. Compliant sheet metal parts are widely used in various manufacturing processes including automotive and aerospace industries. The main role of the planner...

INTRODUCTION High-accuracy rotary encoders are required for rotational axis position measurement in ultraprecision manufacturing and measurement equipments. A typical rotary encoder is made of a glass disk with a fine grating pattern and a scanning read head unit. Digital pulse trains are output from the read head to represent the disk rotary position. The angular measurement accuracy of such a...

The interest in micro manufacturing processes is increasing because of the need for components characterized by small dimensions and micro features. As a result, researchers are studying the limitations and advantages of these processes. This paper deals with tool run-out measurement in micro milling. Among the effects of the scale reduction from macro to micro, tool run-out plays an important ...

This paper presents an efficient and robust algorithm for the geometric determination of swept volumes during the simulation of NC−milling (three-axis machining and five-axis machining). The boundary Ψ of the volume swept by a cutter Φ is represented polygonally by using instantaneous helical motions to exactly determine the line of contact between Φ and Ψ. Applying concepts of differential geo...

The paper presents the compliance errors compensation technique for industrial robots, which are used in milling manufacturing cells. under external loading, which is based on the non-linear stiffness model. In contrast to previous works, it takes into account the interaction between the milling tool and the workpiece that depends on the end-effector position, process parameters and cutting con...

This paper reviewed existing studies in the area of tool condition monitoring. The review revealed the substantial amount of works that have been done in the area of tool condition monitoring in machine tool. However, it was observed that investigating the feasibility of using the main spindle and feed motor currents for tool condition monitoring in micromachining has not been carried out despi...

This paper discusses the selection of tools in milling processes. To carry out this research, it has been developed an expert system based on numerical methods. The expert system, chooses an appropriate tool, between a known set of candidate available cutters. The knowledge base is given by limiting the process variables. They are obtained taking into account, instabilities due to tool-work-pie...

This paper describes a fuzzy-nets approach with the assistance of a statistical model (multiple regression) to create an in-process tool wear prediction (S-FN -ITWP) system, the goal of which is to predict tool wear in milling operations under cutting conditions determined by feed rate and depth of cut with cutting force detected through a dynamometer. After the S-FN-ITWP system had been traine...