Tool for making mock-ups, particularly for investment precision casting technologies

摘要

In the present invention, there is disclosed a tool for making mock-ups, particularly for investment precision casting technologies comprising a hollow shell (1), adapted for clamping in spindle of a digitally controlled machine tool, wherein a working cylinder (3) being provided with a working nozzle (7) extending out of the shell (1) is disposed in the interior (102) of the shell (1). Said working cylinder (3) is coupled with a drive (4) that is controlled by an output signal from control unit (13) of building material (15) feeding. A hot air heater (9) is connected with the shell (1) interior (102). The drive (4) is fixed outside the shell (1) on a bed (5) that is slidably mounted on a linear guide (6) situated parallel to a working cylinder (3) piston rod (32), whereas the working nozzle (7) having its surface preheated by the heater (8), extends through the bottom (104) of the shell (1) in the direction perpendicular to the working cylinder (3) longitudinal axis. At the point, where the working nozzle leaves the shell (1), there is further located an auxiliary hot air nozzle (10) having its outlet directed through the mediation of a withdrawal pipe (16) into the stream of hot air leaving the hot air heater (9).