Approach to optimal line spacing for cutting picks of mining spiral cylinder

In view of several permutation forms that spiral cylinder might produce, taking minimal energy consumption, the theoretical calculation formula of the actual maximal cutting thickness and the optimal line spacing for cutting picks is deduced. The attack-pick is taken as an example to calculate the optimal line spacing and the area of the piece section for the three possible permutation forms of three-spiral cylinder in the concrete operating mode. At the end, the permutation forms is definiteed on the picture of cutting and the area of the piece section. The derived formulate has certain theory directive significance forms of the selection of arranging the forms of cutting picks.