Abstract
<p>In order to shorten the auxiliary times regarding tool and workpiece changing, conventional machine tools are equipped with automatic tool changers and automatic pallet changers, thus becoming machining centers. Reducing the time consumed with the change of the workpiece to follow in machining implies the existence of another table – i.e. the pallet – on which the workpiece is positioned and clamped, while on the working area of the machine another part is manufactured. This paper is presenting a new automatic pallet changer mechanism which is hydraulically driven, along with its guiding and transmission systems.</p>
Highlights
With the widely automation of manufacturing processes in metal cutting industry, the use of machining centers has become increasingly dense
The automatic pallet changer mechanism presented in this paper can be attached to almost any conventional machine tool along its travel axis
The main advantage of an automatic pallet changer is the small setup time of the workpiece to follow in the machining chamber, which is resumed, practically, to the total time take to complete the sequence shown in fig
Summary
With the widely automation of manufacturing processes in metal cutting industry, the use of machining centers has become increasingly dense. Automatic pallet changers are provided with two stations [4], [5], one having the purpose to load the machining center and the other to store the pallet with the workpiece to follow the process. The driving of these linear shuttle pallet changers can be made hydraulically (linear hydraulic cylinders), pneumatically (pneumatic cylinders) or mechanically (by making use of an electric motor and chain or ball screw transmission).
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