For example, when it is found that the accuracy of the parts stamped out by a micro-motor punch press suddenly deteriorates, accompanied by abnormal noise and slider movement jamming, this is likely to indicate that the punch...
How to calculate the tonnage of punching machine
Calculating the tonnage of a punching machine requires consideration of a number of factors, the following is a common calculation method:
Press tonnage = Punching force ÷ 1000
Punching force = punching perimeter × material thickness × material shear strength × safety factor
Punching circumference: the length of the contour to be punched.
Thickness of material: in millimeters.
Material Shear Strength: The shear strength of different materials varies and can be obtained from material manuals.
Safety Factor: Usually taken to be around 1.3 to ensure that the press has sufficient capacity to complete the punching job.
For example, to cut a 50mm diameter circular piece of iron, the thickness of the material is 3mm, the material is ordinary carbon steel, and its shear strength is about 345MPa.
Punching circumference = π × 50 ≈ 157mm
Punching force = 157 × 3 × 345 × 1.3 ≈ 208810.5N
Punching tonnage = 208810.5 ÷ 1000 ≈ 208.81 tons
It should be noted that this is only an approximate calculation method, and in practice it is necessary to take into account the needs of different processes such as punching, bending, drawing, etc., as well as the performance characteristics of the punching machine and the working conditions and other factors.
Micro motor punch press
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