Portable alarm system for CNC milling machine

摘要

An alarm system including a battery powered transmitter received in a watertight housing. The housing includes an outwardly extending shank. The shank is adapted for receipt in a tool holder stored in tool change magazine. The magazine is mounted inside a high speed CNC milling machine. When the milling machine completes a work cycle on a work piece, it is programmed to activate an automatic tool changer that retrieves the tool holder with transmitter from the magazine and attaches them to a tool spindle. The movement of the machine is then used to activate a radio signal button on the transmitter and send a radio frequency signal to a battery powered receiver disposed outside the milling machine. The receiver than activates an alarm. The operator is then alerted that the milling machine has stopped operating and needs to be attended.

主权项

1. An alarm system used with a CNC milling machine for alerting an operator of the machine that a work cycle has been completed on a workpiece, the milling machine including a tool holder, a tool holder magazine for storing one or more tool holders, an automatic tool changer, and a tool spindle, the tool spindle used in milling the work piece, the alarm system comprising:
a portable, battery powered transmitter with a radio signal button, the radio signal button, when pressed inwardly, actuating the transmitter and sending a radio signal outwardly from the milling machine; a watertight transmitter housing for receiving the transmitter therein, a tool holder shank attached to and extending outwardly from one side of the transmitter housing, the shank adapted for receipt on the tool holder, the tool holder holding the transmitter and transmitter housing inside the milling machine; and a portable, battery powered receiver having an alarm thereon, the portable receiver disposed outside the milling machine, the receiver sounding an alarm when receiving the radio signal from the transmitter and alerting the operator.