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上刀架作摆动的剪板机剪切精度取决于机床的各种因素,如:剪切角、喉口变形、行程速度、机床刚度、剪切长度和上下刀片刃口间隙等等。由于这类剪板机国内还未广泛制造和使用,因此在选择机床精度方面还未摸索出成熟的经验。据我厂试制的QYll—32x4000型剪板机使用情况对这类剪板机规定了以下三项精度: 1.与上刀片贴合的支承面的不平度。剪切厚度≤10毫米,在1000毫米长度上允差为0.03毫米;剪切厚度>10毫米,在1000毫米长度上允差为0.40毫米。
The shearing accuracy of the upper shearer for swinging shears depends on various factors of the machine tool, such as shearing angle, throat deformation, travel speed, machine rigidity, shearing length and upper and lower blade edge clearances. Because of this type of shearing machine has not yet been widely manufactured and used, so in the selection of machine accuracy has not yet found a mature experience. According to the trial of our factory QYll-32x4000 shears use of this type of shears provides the following three precision: 1. And the blade fit the contact surface roughness. Shear thickness ≤10 mm, tolerance of 0.03 mm over 1000 mm length; shear thickness> 10 mm, tolerance of 0.40 mm over 1000 mm length.