Drill jig used for hole on central excircle of cylindrical part and provided with disks at two ends

Abstract

The invention relates to a drill jig used for the hole on the central excircle of a cylindrical part and provided with disks at the two ends. A positioning plate seat is fixed on a bent plate, an upper positioning plate and a lower positioning plate are fixed in the groove of the positioning plate seat, and the vertical part of a drill plate is installed in the square hole formed by the groove of the positioning plate seat and the bent plate. A moving pin is fastened on the drill plate after penetrating the groove on the bent plate, and the roller on the moving pin is installed in the groove of an elevating master plate. The elevating master plate is installed on the bent plate through a wrist, and a handle is fastened on the elevating master plate. The drill jig is suited on the drill plate, and the length of the drill plate for installing the drill jig sleeve plate forms clearance fit with the inner surfaces of the two end disks of a rice screen shoe. A part is installed on the upper positioning plate and the lower positioning plate through the grooves at the upper part and the lower part of the inner cavity thereof. The upper positioning plate and the positioning plate seat are provided with holes coaxial with the inner hole of the drill jig sleeve, and the diameter of the holes is 0.4-0.7 mm larger than the inner hole of the drill jig sleeve. The drill jig has the advantages of reasonable positioning, convenient operation, high quality and efficiency, simple structure and low manufacturing cost.

Description

technical field [0001] The invention relates to mechanical processing equipment, in particular to a drilling template for a hole on the outer circle in the middle of a cylindrical part with discs at both ends. Background technique [0002] The inner cavity of some mechanical parts is a regular polyhedral cylinder, and there are grooves at the intersection of the faces. For example, the rice sieve frame of the 6NF series air-jet rice mill used in large quantities in rice processing equipment. It is composed of a plurality of circular rings whose inner cavities are positive 6-sided cylinders and a plurality of connecting ribs. Its function is to fix 6 pieces of rice sieves with beading in the inner cavity of the rice sieve frame. Therefore, it is necessary to process 6 evenly distributed planes in the inner cavity of the rice sieve frame and process the grooves for installing the bead at the intersection of the two planes. The stud on the bead is fixed with a nut through th...

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