(1) according to the processing of bending sheet metal material, plate thickness, to calculate the need to buy how many tons of CNC cutting machine, in this case, the tonnage is the biggest pressure planing machine, rather than the CNC planer machine weight; (2) planer machine blade surface width ( According to plate length) The distance between the mouth and throat depth and pillar; (3) is to select the electro-hydraulic synchronous plane slot machine or a torsional axis synchronous CNC machine is also to consider problem, electro-hydraulic synchronization type plane can be more intelligent and automatic groove machine, but the price is higher, torsional axis synchronous type planer machine cheap; (4) the choice of electro-hydraulic synchronous planing machine type is more, can be customized according to the machining requirement.