| 摘要 |
A method and apparatus for creating a step in the edge of a concrete block is presented. The method includes conveying the concrete block through a sawing station that saws a thin groove and leaves a thin strip of concrete near the edge of the block. The block is then conveyed through a shearing station that includes two rollers mounted to a bar. The inner distance between the outer periphery of the rollers is set to less than the thickness of the block and the resultant shear created by the roller arrangement shears the narrow strip of concrete from the block. The step created in the block is very even and rectangular in shape.
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