MAIN SPINDLE DEVICE

PURPOSE:To detect surely and speedy whether a tool is installed in a tapered hole of a main spindle or not before ATC action. CONSTITUTION:In a tool clamping mechanism, a draw bar 6 is pulled up by a coned disc spring 5, a pull stud 8 is held by closing collet 7, and a tool 3 is pressed into a taper...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ISOZAKI YOSHIHIKO, KAWAI SUMIO
Format:	Patent
Sprache:	eng
Schlagworte:	BORING 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 TURNING
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Beschreibung
Zusammenfassung:	PURPOSE:To detect surely and speedy whether a tool is installed in a tapered hole of a main spindle or not before ATC action. CONSTITUTION:In a tool clamping mechanism, a draw bar 6 is pulled up by a coned disc spring 5, a pull stud 8 is held by closing collet 7, and a tool 3 is pressed into a tapered hole 10. Then, the draw bar 6 is pushed down by the piston rod 12 of a cylinder 11 and the tool 3 is released by opening the collet 7. When the tool 3 is not installed, the tool 3 is pushed forward at the stroke end of a piston rod 12 from a tapered hole 10 by a prescribed beating allowance by the draw bar 6. Then a highly accurate limit switch 20 is engaged with a dog 16 on the piston rod 12 so as to generate a tool drawing signal. When the tool 3 is installed, the piston rod 12 stops just before the stroke end.