What's the stake in having 55's and 70's in the stroke of the press? The stroke of a punch press depends on the eccentricity of the crankshaft, and the stroke is twice the eccentricity. 55 stroke

    What's the stake in having 55's and 70's in the stroke of the press?

     The stroke of a punch press depends on the eccentricity of the crankshaft, and the stroke is twice the eccentricity. 55 stroke and 70 stroke are the two types of punch presses for the 16-ton punch press J23-16. From the point of view of the stakes, the larger the stroke, the greater the centrifugal force generated during the movement, and if it is a high-speed punch press then the vibration generated will be very large. However, a large stroke is suitable for deep-drawing or punching cylindrical parts (small stroke can not be punched). The centrifugal force generated by the stroke is small, so the stroke of high-speed punch press is generally very small (generally not more than 100).

      Stroke size on the nominal force stroke has a greater impact, the stroke of the nominal force of a large stroke is also a little larger (nominal force stroke refers to the lower dead center of the punch press can produce a rated stamping tonnage of that section of the stroke, the general press in the following 10mm). The same type of body, the installation of two types of stroke crankshaft also affects the height of the closure (or die height). 55 and 70 of the 16-ton punch press nominal force stroke of 4mm, the height of the closure difference of 7.5mm.