摘要:
Method for assembling a modular support structure (1) of an item-processing machine comprising hubs (2,2') for bearing respective shafts (3,3') of moving members, and a plurality of link elements (4,4') fixable at hubs (2,2'); the method comprising: a) providing a toleranced jig plate (5) with means (50,50') defining the definitive boss position of hubs (2,2'); b) providing fixing portions (20; 26, 27) integral with hubs (2,2') or fixing portions integral with link elements (41, 41'; 42, 42'), fixing portions (20; 26, 27; 41, 41'; 42, 42') defining a volume (22; 49) for receiving in loose engagement a respective fixing portion and tillable with a curable resin; c) arranging hubs (2,2') at their defined boss positions; d) arranging link elements (4,4') in loose engagement with hubs (2,2') to form a temporary skeleton; and e) permanently fixing link elements (4,4') to respective fixing portions of hubs (2,2') via injection and hardening of a curable resin.
摘要:
A system for fixing an accessory (2) on a metal frame (3) for doors, windows, and the like, including a screw (1) having a head (5) and a self-tapping threaded stem (4) with metric thread, the end (8) of which opposite to the head (5) is tapered. The ratio between the external diameter of the self-tapping stem (4) of the screw (1) and the diameter of the through hole (16) of the wall (15) of the frame (3) is comprised approximately between 1.4 and 1.25, and the ratio between the diameter of the through hole (16) of said wall (15) and its thickness is comprised approximately between 2.5 and 5.5 and more preferably between 3 and 5.