Curved shears, also known as curve shears or curve plate shears, are a type of machine tool used to cut metal sheets and plates. Unlike straight shears, which can only cut in straight lines, curve shears can cut in curved and curved lines. Curved shears have a special curved blade that is able to cut along a curve without the blade lifting off the sheet or plate. The cutting blade is usually attached to a movable arm that can move the cutting tool in different directions to create complex cutting patterns. Curved shears are used in a variety of applications, including the production of sheet metal parts for the automotive, aerospace, machine building and other industrial applications. They offer high precision and repeatability in producing cutting patterns in materials and are capable of cutting complex shapes and designs that would be difficult to achieve with other cutting tools. There are several types of curve shears that are suitable for different applications and materials. Some curve shears are mechanically driven, while others are hydraulic or pneumatic. Choosing the right cam shear depends on the specific requirements of the application.