The utility model belongs to the trimming technical field, concretely is a kind of trimming device for
precision casting part
processing, including mounting seat, the inside of both sides of mounting seat is equally provided with rectangular groove, and the both sides between rectangular groove are equally fixed with support rod, the outside sliding installation of support rod has slider, and fixed connection has tension spring between slider and rectangular groove, the side of slider is installed with trigger switch, and the side of rectangular groove is installed with
extrusion plate, and the between slider is rotatably installed with connecting shaft, and the outside installation of connecting shaft has trimming roller;When trimming roller and
casting part side contact, trimming roller is subjected to the reaction force of
casting part, and slider will be extruded in rectangular groove along support rod, at this time, the tension spring between slider and rectangular groove is stretched, and the slider of trigger switch gradually approaches
extrusion plate, until trigger switch is triggered by
extrusion plate,
signal transmission to control panel, control trimming motor start, realized quick response and accurate trimming, improved
processing efficiency, and reduce energy waste.