Coin material factor 1 coin material datum of straightness 2 sheet metal stress is uniform 3 coin material thickness is uniform mold factor of 4. Whether the precision of the upper and lower mould precision mould compensation device is accurate under 5 matches with the design of the frame on the 6 modular fixture to high precision mechanical factor 7 planing machine clamping mouth straightness slider ( The Y direction, X direction) 8 Y1Y2 repetitive positioning accuracy, positioning accuracy and 9 planing machine slider and rack guide rail gap is reasonable 10 frame of verticality and tumble in 11 oil cylinder and the slide block is reasonable connection 12 frame and the strength of the sliding block, precision behind 13 system repeated positioning accuracy, positioning accuracy, The X direction, the direction of R) 14 whether computer system adjustment in place 15 hydraulic system is in place for 16 hydraulic system and the computer adjust the matching degree of human factors at about 17 people in plate bending thrust