Dongguan leather master recruitment

(1) It can be seen from reading the figure that ABC rotates around B, and the power arm is larger than the resistance arm when it is used, which is a labor-saving lever; In order to generate more pressure on the clamped material, the power arm should be enlarged, so the clamping force should act on the far point f;

(2) The rough surface of the holster under the grip force is to increase the friction by increasing the roughness of the contact surface under the same pressure;

(3) The reason why the jaws are sharp is to increase the pressure by reducing the stress area under the same pressure.

Therefore, the answer is: save effort; f； Increase friction; Increase the pressure