The guillotine shearing machine is the second generation of hydraulic shear that cuts a sheet plate by reciprocating linear motion with one blade relative to the other blade.
The machine is widely used in aviation, light industry, metallurgy, chemical, construction, shipbuilding, automobile, electric power, electrical appliances, decoration and other industries to provide the required special machinery and complete sets of equipment.
The guillotine shearing machine adopts steel plate welding structure, the fuselage using the finite element analysis and design. Vibratory stress relief of internal stress, so that machine body stable and reliable.
Using three-point rolling guide pulley can eliminate the support gap, and increase cutting precision.
Shearing angle can be adjusted within a certain range, which can reduce the shearing deformation of sheet metal and can shear much thicker sheet metal.
Plug in hydraulic system can make oil temperature become high slowly meanwhile it enhances the reliability and safety operation of machine.The backgauge is designed manual lifting function, which is convenient to shear long sheet meal.
The Guillotine Shearing Machine used is called a squaring shear, power shear, or guillotine. The machine may be foot powered, less commonly hand powered, or mechanically or hydraulically powered. It works by first clamping the material with a ram. A moving blade then comes down across a fixed blade to shear the material. For larger shears the moving blade may be set on an angle or “rocked” in order to shear the material progressively from one side to the other; this angle is referred to as the shear angle. Setting the blade on an angle decreases the amount of force required, but increases the stroke. A 5 degree shear angle decreases the force by about 20%. The amount of energy used is still the same. The moving blade may also be inclined 0.5 to 2.5°, called the rake angle, to keep the material from becoming wedged between the blades. However, raking the blade compromises the squareness of the edge. The machine consists of a shear table, work-holding device, upper and lower blades, and a gauging device. The shear table is the part of the machinery that the workpiece rests on while being sheared. The work-holding device is used to hold the workpiece in place and keep it from moving or buckling while under stress. The upper and lower blades are the piece of machinery that actually do the cutting, while the gauging device is used to ensure that the workpiece is being cut where it is supposed to be.
The design of press tools is an engineering compromise. A sharp edge, strength, and durability are ideal, but a sharp edge is not very strong or durable, so blades for metal work tend to be square-edged rather than knife-edged. Typical workpiece materials include aluminum, brass, bronze, and mild steel because of their outstanding shearability ratings. Stainless steel is not sheared as often due to its tendencies to work-harden.
Other geometric possibilities include the squaring shear, angle shear, bow-tie shear and bar shear. All of these have many different uses and are all used regularly in certain manufacturing fields.[From Wiki]
