1). Before the keep-off: placed on a table surface, with instructions numerical scale, to adjust the activity block is to achieve the required keep-off values. When cutting thin plate keep-off shear convenient before use.
2).Stopper: installed in the tool carrier, with the upper tool post to bobbing up and down, the adjustment by the 0.55 KW motor drive behind, after geared by the screw drive, the press the regulation when pressing "+" and "-" to block plate the adjustment of the forward or backward, digital display size (location) in motor adjustment cannot achieve the required adjustment value, can be manually adjusted twisted round manual fine-tuning to ensure that the required adjustment value, behind so adjusting is convenient and reliable. Behind when shearing to length of sheet metal is greater than the maximum keep-off distance, baffle plate can be open to the last position, to raise keep-off plate, sheet metal shear can be arbitrary.