Mechanical arm for a stir-frying action in cooking

A mechanical arm for performing a stir-frying action in cooking, which comprises:

• a fixed base consisted by a first motor and a second motor, wherein a first length (a5) is between the first motor and the second motor;
• a first rocker link having a second length (a1), wherein a first end (A) of the first rocker link is connected with the first motor, and the first motor is used for driving the first rocker link to do a first angular movement (θmotor1=θbac+θcae);
• a first float link having a third length (a2), wherein one end of the float link is cotter jointed with a second end of the first rocker link;
• a second float link having a fourth length (Lcm), wherein a first end (C) of the second float link is cotter jointed with a second end of the first float link, and the second end of the second float link has a third motor;
• a second rocker link having a fifth length, wherein a first end (E) of the second rocker link is connected with the second motor, and the second motor is used for driving the second rocker link to do a second angular movement (θmotor2=θdem+θmme), a second end (D) of the second connecting end is cotter jointed with a sixth length (a3) between the cutting joint point and the first end of the second float link;
• and
• a third rocker link having a seventh length (Lmp), wherein a first end (M) of the third rocker link is connected with the third motor, and the third motor is used for driving the third rocker link to do a third angular movement.