Zinc steel guardrail punching machine Pipe bending is the same as sheet bending.

In the case of pure bending, when the pipe with outer diameter D and wall thickness t is bent by the external force moment M,

Tensile stress of pipe wall outside neutral layer σ 1, the pipe wall becomes thinner;

Tensile stress of inner pipe wall of neutral layer σ 1, the pipe wall becomes thicker.

Moreover, the shape of the cross section changes from a circle to an ellipse due to the resultant forces F1 and F2,

When the deformation is too large, cracks will appear on the outer tube wall and wrinkles will appear on the inner tube wall.

When cutting large diameter pipes, the use of a grinding wheel saw consumes a lot of energy and increases the working hours.

But for guardrail pipe Punching machine For example, the pipe cutting frequency remains unchanged, and only the length of the rocker push rod needs to be adjusted.  

According to the test, a well sharpened blade can cut a diameter of 18mm under normal use × 70000 1.5mm pipes,

A grinding wheel saw blade can cut more than 500 pieces, that is, the service life of the cutter is 140 times that of the grinding wheel blade,

The price is only 5 times of that, so zinc steel Guardrail punching machine The production cost has also been greatly reduced.

The supporting roller of the punching machine for zinc steel guardrail swings back and forth during the bending process. The included angle between the steel pipe of the punching machine and the horizontal plane is usually designed to be zero,

Due to manufacturing errors and various elastic deformations in the process of bending, the included angle cannot be zero in the ideal,

When the elbow moves forward, the forward deformation of the support roller increases, and the included angle also increases.

When the steel pipe bends forward or backward Aluminum alloy punching machine The elbow support roller swings back and forth during operation.