摘要:
Rotation and linear movement of a main gear is provided by a pinion gear rotatably mounted on a crank arm and in meshing engagement with the main gear. A connecting arm between the gear centers keeps the gears in meshing engagement. The pinion gear may have a diameter one half the diameter of the main gear to provide rotation of the main gear 180 degrees after one revolution of the pinion gear. The crank arm may be rotated in opposite directions to provide oscillating movement of the main gear. In a tire building machine, the main gear may be mounted in a linear guide of an upright plate member for vertical movement. The main gear is connected to a shaft for rotating and tilting a hub member having two spaced apart tire building drums mounted with axes at an angle of 90 degrees and in the same plane as the axes of the tire building drums so that they can be oscillated between two fabricating positions.
摘要:
A display screen turning apparatus includes a base portion (30) for placing a display screen portion (10) thereon, a transmission gear portion (51) for transmitting driving force of a driving source (52) arranged inside the base portion, a display screen support member (81) supporting the display screen portion rotatably in a horizontal plane and a vertical plane, a rack plate (60) arranged on the base portion and including a rack gear (62) meshed with the transmission gear portion in a horizontal direction, and a coupling portion (63) rotatably coupling the rack plate in the horizontal plane with respect to the display screen support member. The display screen support member is rotated in the anteroposterior direction with respect to the vertical plane by a prescribed angle through the coupling portion coupled to the rack plate following reciprocation of the rack plate in the horizontal plane with normal and reverse rotation of the driving source.
摘要:
A method for setting a lead-angle value of a motor drive control circuit is disclosed. The motor drive control circuit energizes and drives the windings of a motor with an energizing timing based on a stored lead-angle value. The method includes the steps of: rotating a rotor at a given rpm (step S102), energizing and driving the windings during the rotation at the given rpm with the lead-angle value being switched (step S110); calculating an average value of current amount that energizes and drives the windings (step S114); calculating a total value of consecutive multiple average values for each lead-angle value (step S120); finding a smallest total value among the total values, and setting a lead-angle value corresponding to the smallest total value as a stored lead-angle value (steps S122).
摘要:
A display screen turning apparatus includes a base portion (30) for placing a display screen portion (10) thereon, a transmission gear portion (51) for transmitting driving force of a driving source (52) arranged inside the base portion, a display screen support member (81) supporting the display screen portion rotatably in a horizontal plane and a vertical plane, a rack plate (60) arranged on the base portion and including a rack gear (62) meshed with the transmission gear portion in a horizontal direction, and a coupling portion (63) rotatably coupling the rack plate in the horizontal plane with respect to the display screen support member. The display screen support member is rotated in the anteroposterior direction with respect to the vertical plane by a prescribed angle through the coupling portion coupled to the rack plate following reciprocation of the rack plate in the horizontal plane with normal and reverse rotation of the driving source.
摘要:
Rotation and linear movement of a main gear is provided by a pinion gear rotatably mounted on a crank arm and in meshing engagement with the main gear. A connecting arm between the gear centers keeps the gears in meshing engagement. The pinion gear may have a diameter one half the diameter of the main gear to provide rotation of the main gear 180 degrees after one revolution of the pinion gear. The crank arm may be rotated in opposite directions to provide oscillating movement of the main gear. In a tire building machine, the main gear may be mounted in a linear guide of an upright plate member for vertical movement. The main gear is connected to a shaft for rotating and tilting a hub member having two spaced apart tire building drums mounted with axes at an angle of 90 degrees and in the same plane as the axes of the tire building drums so that they can be oscillated between two fabricating positions.