51105 * 2개                           ( Worm_wheel_bed * 1 + Worm_thrust * 1 )
51205 * 2개                           ( Worm_Wheel_head * 1 + Worm_thrust * 1)
MR104ZZ * 5개                      ( Bed_Cam * 4 + Worm_Wheel_head * 1 )
608ZZ * 4개                           ( Worm_shaft_head * 2 + Worm_shaft_bed * 2 )
