Shearing machine is a die cutting equipment that cuts stock or sheet of metal, plastic and paper without forming chips or taking help of burning or melting. This handy tool supports operations like blanking, piercing, roll slitting and trimming.
Different types of shear machines are hydraulic, over crank and under crank machines. Shock resistant, low and high end alloy steel and carbon are used as shearing plates depending on the thickness of materials to be cut down.
In a shearing machine, one finds a moving blade and a fixed blade. The moving blade pushes the workpiece against the fixed blade. The cutting action takes place exactly perpendicular to the direction of blade movement. This makes the material to experience highly localized shear stresses between these blades. When the shear stress is increased to a certain level, the material is first fractured and then torn.
Due to normal inhomogeneities in materials and inconsistencies in cutting, the shearing action may not occur in a uniform manner. Generally a fracture begins at the weakest point and progress to the next till the entire workpiece is sheared.
There are many advantages of a shearing machine compared to other forms of cutting tools. A shearing machine supports numerous cutting procedures like piercing, coining, and embossing in a single operation. This machine supports excellent dimensional control, accuracy, repeated actions while ensuring straight and superior finished edges of a material.
The shearing machine supports an economical alternative to any traditional cutting process used in larger production. Avoiding the need of any secondary machine, this machine is suitable for making slots or holes of any desired size whether these are placed near to the edges or to each other.
A press brake is a machine tool that is primarily used for bending a sheet or plate of a metal. This machine forms predetermined bends by putting the workpiece between a punch or movable gauge on top and a die or fixed gauge at bottom.
Based on different applied pressures, forces and nature of cutting, press brakes are divided into mechanical, pneumatic, hydraulic, and servo-electric brakes. Nowadays, the multi axis computer controlled press brakes allow operators to make necessary adjustments during a bending process where the used sensors send real-time data about the bending angle.