The mold generally consists of two parts, namely the cavity and core. CAD CAM are solutions that can meet needs core fabrication. process is displayed to get a program in form code file which will later be entered into CNC machine. This study aims able design plan making cores on plastic plate molds being with software. research was conducted determine molds. To spindle speed feed for each tool...

Advanced technologies for the calibration of machine tools are presented. Kinematic errors independently their causes classified into within one-axis as intra-axis errors, between axes inter-axis and volumetric errors. As major technological elements tool calibration, measurement methods, modeling theories, compensation strategies addressed. The criteria selecting a combination from point view ...

Using acoustic emission (AE) signals to monitor tool wear states is one of the most e€ective methods used in metal cutting processes. As AE signals contain information on cutting processes, the problem of how to extract the features related to tool wear states from these signals needs to be solved. In this paper, a wavelet packet transform (WPT) method is used to decompose continuous AE signals...

Mechanical methods of tunnel excavation are widely used because their high output, and the selection appropriate technology depends on ground composition project-related features. Compared with boring machines (TBMs) roadheaders, mechanical pre-cutting in widening have proven to be reliable capacity expansion. other machines, characteristics not systematically analyzed rare use. In this study, ...