| 摘要 |
<p>The invention relates to an electric actuator for machine-tools, robots and the like. According to the invention, the electric actuator consists of a direct curent linear motor comprising a ferromagnetic cylinder (11) at whose ends there are secured two radially magnetized permanent magnets (12 and 13), a ferromaagnetic housing (8) wherein there are mounted two cylindrical coils (9 and 10), a cover (6) and a shield (7) and a rotary motor consisting of a rotoric bush (16) whereon some alternating polarity permanent magnets (17) are secured, the bush (16) being mounted on a perforated shaft (25), a stator (18) made of steel sheets and having notches (19) wherein there is located an alternating current winding (20), a housing (21) provided with some shields (22 and 23), a position and speed transducer, the rotary motor being sealed with a cover (28), both motors being mounted on a shaft (1) of a linear guide provided with balls and being also mounted in connection with each other by means of the shield (22) of the rotary motor and of the shield (7) of the linear motor.</p> |
