Broken tool detector

This invention relates to the detection of tool ( 50 ) and other items used on machines by use of a detector ( 5 ). An emitter ( 10 ) emits a beam of laser light ( 20 ) and sensor ( 30 ) is used to determine the presence or absence of a tool ( 50 ) when the tool is positioned in the beam. If any lig...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	STIMPSON VICTOR G, BELL COLIN T
Format:	Patent
Sprache:	eng
Schlagworte:	COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING MACHINE TOOLS MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS TRANSPORTING
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Beschreibung
Zusammenfassung:	This invention relates to the detection of tool ( 50 ) and other items used on machines by use of a detector ( 5 ). An emitter ( 10 ) emits a beam of laser light ( 20 ) and sensor ( 30 ) is used to determine the presence or absence of a tool ( 50 ) when the tool is positioned in the beam. If any light is present at the sensor ( 30 ) within a predetermined time period then the tool must be broken and the output of the detector is latched. Thus if a broken tool is present and contamination obstructs the beam then this is ignored provided some light is sensed.