Each manufacturer is more than aware that distortions of finished products predict failure for their work. To prevent the possible problems, make proper blade settings as well as match the process components with the features of blades of your shear machine.
Matching the materials and blades.
While dealing with shear process, fabricators should consider the following points, as they exert immediate influence upon blades:
- The state of the shearing blades
- The equipment capacity
- The gap between the top and down blades
- The angles, that blades require
The following factors have to be considered while processing:
- Grades of materials satisfactory for your task
- Thicknesses of materials
- Types, shapes of cuts.
Causes of Distortions
In case of shearing plates of 5/8’’ thickness, the handheld hold-down should be tightened. Later, when using work pieces of 1/2’’ thicknesses, do not forget to set the handheld hold-down. Failure to do so will bring about distortions. The reason of this can be the automatic flipping of plates to extremely little extent. This might as well cause early wear-out of blades. And what is more, in the log run it might bring about the damages of the machine body-structure.
A hydraulic cutter applies hydraulic hold-down clamping. This allows preventing the problems. Here, fabricators do not need to make any adjustment manually. So, the thicknesses of materials can be changed easily.
A point, that needs no less consideration is the tonnages provided by your shear machine manufacturers. Tonnages depend on the machine general design as well as its hydraulic types.
The Essence of Blades
In terms of blades there exist 2 approaches.
The 1st one is known as low-raked-angular blade, the performance of which resembles that of the guillotine. This hydraulic guillotine shear performs neat cuts upon slim materials with no risk of distortion. The machine for this access should possess good tonnages.
The 2nd one is known as high-raked-angular shear, which performs just as scissors. As the pressures are exposed to the 1 point meantime, not along the full span, the cutting force is quite high. In case of the improper adjustment of rake angles, distortions are inevitable, for the sheet gets pulled just at the time the blades slice it.
In both of these cases distortions are possible. A variety of blade types is offered not to allow distortion. For instance, some blades allow curving down at the central part, which assumes that cutting is carried out not unlike scissors, with left-side or right-side motions. The cutting is initiated in the middle moving outwards left-side and right-side meanwhile.
Look into the blade varieties offered by the market. Fitting the blades with your task will provide higher power for your machine minimizing the possibility for distortions. It is essential to determine which equipment is suitable for your particular task, a guillotine shearing one or scissors type one.