Great improvement in finished billet
Model DLB and UPS, pure copper
Model DLB and UPS, S45C
Key factor, cutting speed
We have a theory that a minimal cutting speed of 0.5 m/s or more is necessary for highly accurate shear cutting of soft material and very tough (tenacious) materials.
UPS improves perpendicularity, while cutting speed influences the smoothness of cutting plane.
The multiplier effect they provide allows highly accurate cutting of highly tenacious materials and soft materials in which cutting deformation is large when conventional cutting machines are used.
UPS structure and accuracy
The UPS-type holding system is the mechanical system whose main components are made of die steel and cemented carbide,
and hydraulic pressure is used for its partial power source.
The patented system provides a high holding force for billets only at the moment of cutting,
instantaneously decreasing the holding force to zero, and completing the smooth lowering stroke of the upper blade.
UPS prevents cracks (shearing cracks) on billets
Cracks on a billet are caused as follows: As a result of tilted cutting of the billet,
contact surface of the moving blade and the billet is decreased, and a portion of the billet is subjected to a high compressive stress.
On the boundary surface of the portion subjected to a high compressive stress, and on the other portion, noticeable deformation is generated, leading to cracks.
Since UPS cuts billets horizontally, stress concentration can be prevented and deformation on the boundary surface can be reduced to unnoticeable levels, to prevent resulting aging cracks in most materials which tend to be cracked by nature.
(Supplementary preheating may be needed for specially hard materials.)