Manual Shearing
At the earliest stage, metal shearing was entirely manual, where metal operators used hand tools to shear metals. It was a labor-intensive, slow, and imprecise process because the clarity of cuts depended on the skilled operators.
Lever Operated Shears
Lever-operated shears were introduced in the 19th century and transformed metal shearing. These shears used mechanical leverage to multiply the force applied to the blades, enabling the cutting of thicker and larger metal sheets.
Mechanical Metal Cutting Shears
As the industrial revolution progressed, it also changed metal shearing machines, transforming metal shears and powering them with steam engines and electric motors. They had adjustable blades, back gauges for precise positioning, and improved cutting capabilities, making it easier for the operators.
Hydraulic Shearing Machines
Hydraulic shearing machines received popularity in the 20th century. The power of pressurized hydraulic fluid generates force and cuts through thick and thin metal sheets. They are versatile, safe, and offer more control to the operator.
CNC Technology
CNC stands for Computer Numerical Control technology. It allows for precise and complex cutting without manual intervention, ensuring consistency and quality.
Variable Rake Angle Shears
The variable rake angle shears are very popular due to their ability to adjust the upper blade angle, which allows for precisely cutting metals of varying thicknesses.
