14-02-2022
What are the differences between hydraulic guillotine and swing beam hydraulic shears? What are the advantages of hydraulic guillotine?
Many new customers have doubts about hydraulic guillotine shears and swing beam shears when purchasing shears. Hydraulic guillotine shears are the second generation of hydraulic shears. At present, manufacturers mainly focus on the production of hydraulic guillotine shears, and the swing beam shears have basically been eliminated.
Compared with the hydraulic swing beam shearing machine, the hydraulic guillotine shearing machine has the advantages of high shearing accuracy, adjustable shearing angle and long service life of the cutting edge.
1. Guillotine shears have high shearing accuracy
A. The clearance between the edge and the edge of the swing beam type and the guillotine type are both 0.04mm. However, the clearance of the bearing connection between the swing arm and the swing frame body of the swing beam machine cannot be eliminated, and the error of the shear accuracy of the addition of the clearance and the blade clearance is generally more than 0.1mm. However, the rear guide rail of the guillotine shearing machine tool holder body is pressed by the bearing with the compression spring pad on the back, so that there is no clearance between the front and backgague guide rails. It can be made smoother and hairless.
B. Since the tool holder body of the swing beam shearing machine itself is arc-shaped, it uses the point contact of the arc to ensure the straightness of the sheared material. The straightness of the cut material is precise.
C. The phenomenon of letting the knife in the middle of the 4000mm swing beam shearing machine is more serious, and some incisions in the sheared material have burrs. This situation cannot be avoided.
2. The shearing angle of the hydraulic guillotine shearing machine is adjustable
LONGBOW felt that when shearing a plate with a thickness of less than 20mm, the swing beam shearing machine could not adjust the shear angle, so the shearred plate have kind of the burr. The narrower the cut material, the greater the distortion. The LONGBOW Guillotine type shearing machine can achieve stepless adjustment of the shearing angle, and the sheared plate is not easy to be distorted and deformed, so as to ensure the machining accuracy of the workpiece. What's more important is that the shear force is stronger when the shear angle is increased.
3. Hydraulic guillotine shears have long service life
4-sided shearing cannot be used on the upper edge of the hydraulic swing beam shearing machine. Because the movement line of the blade frame of the swing beam shearing machine is arc-shaped, only the diamond-shaped blade can be used for two-sided shearing. The hydraulic guillotine shearing machine tool holder body moves up and down in a straight line, and its upper and lower knife surfaces can be sheared by 4 sides, so the service life of the guillotine shearing machine blade is twice as long as that of the pendulum type.
In comparison, there are still many unsolvable problems in the design of swing beam shears. For example: the strength of the machine tool holder body above 3200mm is difficult to guarantee; the lubricating oil of its built-in cylinder semi-circular block is difficult to fill; the cylinder is not easy to repair; the frame is unevenly stressed; The 20mm sheet cannot use the back gauge and so on.