Abstract: An electrical motor-driven lathe includes a work spindle mounted in and rotatable relative to a headstock about a first axis. A compound slide is mounted to be movable along a guideway that extends in a longitudinal direction parallel to the first axis. A feed shaft is mounted to be rotatable relative to the headstock about a second axis parallel to the first axis, and is coupled to the compound slide to transmit a predetermined rotational force to the compound slide so as to move the compound slide along the guideway to a predetermined position. A first servomotor is disposed to drive the work spindle to rotate about the first axis at a predetermined velocity. A second servomotor is disposed to deliver the predetermined rotational force to the feed shaft. A controller is disposed to control the first and second servomotors.

Abstract: A safety shield for a machining apparatus includes a shield frame, and a curved shield member and a curved sliding door that are mounted on the shield frame to enclose a machining unit of the machining apparatus. The shield frame includes a rectangular base, a pair of lateral plates extending upwardly from the rectangular base, a top beam connected to top parts of the lateral plates, and a curved back plate having a top edge connected to the top beam, a bottom edge connected to a rear portion of the rectangular base, and a pair of curved lateral edges connected to the lateral plates, respectively. The shield member can be slid upward along a curved path to overlap the back plate, and the sliding door can be slid in the longitudinal direction of the rectangular base to permit access to the machining unit.

Abstract: A safety shield for a machining apparatus includes a shield frame, and a curved shield member and a curved sliding door that are mounted on the shield frame to enclose a machining unit of the machining apparatus. The shield frame includes a rectangular base, a pair of lateral plates extending upwardly from the rectangular base, a top beam connected to top parts of the lateral plates, and a curved back plate having a top edge connected to the top beam, a bottom edge connected to a rear portion of the rectangular base, and a pair of curved lateral edges connected to the lateral plates, respectively. The shield member can be slid upward along a curved path to overlap the back plate, and the sliding door can be slid in the longitudinal direction of the rectangular base to permit access to the machining unit.

Abstract: A hand wheel includes a hollow support base, an encoding device, a coupling shaft, an indicia member, a friction coupling unit, and a wheel member. The encoding device is disposed in a receiving space of the support base, has a seat portion and a rotary spindle, and generates an electrical signal output that corresponds to detected rotation of the spindle relative to the seat portion. The coupling shaft is connected to the spindle. The indicia member is sleeved on the coupling shaft for indicating angular rotation of the coupling shaft relative to the support base. The friction coupling unit permits co-rotation of the indicia member with the coupling shaft and forced rotation of the indicia member relative to the coupling shaft. The wheel member is operable for driving rotation of the coupling shaft.