Trimming-deburring assembly

A trimming-deburring assembly for making a piece from a casting by performing cutting operations of parts to be discarded from the casting, including sprues, cast runners, wells, vacuum branches, foundry burrs and similar elements, using a trimming-deburring die comprising an upper movable die half and a lower fixed die half, wherein the trimming-deburring assembly comprises:

• an upper fixed plate;
• a lower fixed plate, the lower fixed die half being housable on the lower fixed plate;
• an intermediate mobile plate, movable between the upper fixed plate and the lower fixed plate, in a vertical direction parallel to a main axis (X-X), wherein the upper mobile die half is housable on said intermediate mobile plate;
• command and movement means suitable for moving the intermediate mobile plate, comprising:
• an electric motor housed on the upper fixed plate;
• a movement group operatively connected on top to the electric motor and on the bottom to the intermediate mobile plate, comprising:
• a spindle member drivable in rotation about said main axis (X-X) by the electric motor, comprising a spindle cavity along the main axis (X-X) and a worm gear element equipped with a worm gear cavity defined by a threaded worm gear wall;
• and
• a worm screw element extending along the main axis (X-X), at least partially housed in the spindle cavity and the worm gear cavity, comprising a threaded screw wall engaged with the threaded worm gear wall operatively connected to the lower intermediate mobile plate in such a way that rotation of the worm gear element involves an axial movement of the worm screw element and in turn a change in height of the intermediate mobile plate.