Tool Fault Detection System

A tool fault detection system is needed for a successful operation of a tool management system. Tool fault detection can be categorized into tool wear monitoring and tool breakage detection. In view of the risk to the machine and part, breakage detection is much more significant than tool wear monitoring. A breakage detection system protects the machine, tool holder, and machined part from damage by tool breakage or collision. It as well allows unattended operation of the machining center over prolonged time. A practical approach to the tool wear problem is to replace tools after a specified number of hours of machining. In this manner, the requirement for tool wear monitoring is eliminated and the occurrence of tool breakage is minimized. Fault detection is a function handled at every machine and monitored by the machine control system. CNC machine that is computer numerical control machine with automatic tool changers should have tool breakage detection ability for efficient operation. While a tool fails prematurely, a replacement tool may have to be acquired from the tool room. The capability to respond to these situations is a significant issue in the tool management system.