| 摘要 |
The invention discloses a blade (1; 10; 30) for rotating screw feeders (2) of cutting-mixing machines for fodder, grass silage and similar. It is made by a metal disk (3) having multiple sharp profiles (6) which are made by multiple hollows (7; 71; 75) obtained on the edge of the disk (3). Such hollows are able to give the perimeter of the disk a variable profile which realizes on the product under processing an aggressive dragging and cutting action, being the variable profile sharpened for all the length of its perimeter according to a triangular cross-section profile (22) so to make it sharp.
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