Patent ID: 8056550
Filing Date: 2011-11-15
Classification: B28D

Abstract:
1. A block-cutting gangsaw with vertical frame for cutting a block of granite or other hard material, comprising: a blade-holding frame, the frame adapted to undergo reciprocating and oscillating motion so as to determine a curved cutting trajectory on the block, wherein the blade-holding frame is further adapted to undergo reciprocating movement on an independent oscillating frame which imparts the oscillating motion, so that each blade of the blade-holding frame is always in contact with the block, wherein a contact area between the blade-holding frame and the block moves along a convex, curved trajectory, wherein the oscillating motion of the blade-holding frame is obtained by combining longitudinal traverses and rotations of the oscillating frame, and wherein the oscillating frame is prevented from traversing vertically by way of lateral engagement means configured to engage with complementary means fitted to a fixed structure of the block-cutting gangsaw and prevented from traversing laterally by further complementary sliding lateral engagement means.