Abstract:
A linear hydraulic motor is disclosed in combination with an actuator arm wherein the drive is so mounted with respect to the journaling of the arm that manufacturing tolerances may be considerably relaxed while still maintaining extremely accurate and rigid arm positioning. This is accomplished by maintaining full pressure on all arm actuators when the arm is not actually being moved and at the same time mounting said hydraulic motor in a rotational orientation with respect to the bearings supporting said arm. A special aligning rack and piston system is utilized to assure fine positioning of the arm and the system is particularly well adapted for use as a positioning actuator for use with robotized assembly lines and the like.
Abstract:
A digital hydraulic system converts binary digital input information into displacement of a digital drive. An air reader is used to operate binary latch valves through an air hydraulic interface. A flow sensing system and a hydraulic logic unit cooperate to provide high speed exchange between the piston adders of the digital drive prior to displacement of the load. A hydraulic cylinder sweeps the load about a vertical axis. A selfcooling, air-driven hydraulic pump with an accumulator, provides relatively constant pressure. A damper secured to the piston adders has an additional drive for providing precise location at the end of damping. An incremental paper tape feed with a four motion rack with toggle action indexes the air reader.
Abstract:
A digital hydraulic system converts binary digital input information into displacement of a digital drive. An air reader is used to operate binary latch valves through an air hydraulic interface. A flow sensing system and a hydraulic logic unit cooperate to provide high speed exchange between the piston adders of the digital drive prior to displacement of the load. A hydraulic cylinder sweeps the load about a vertical axis. A selfcooling, air-driven hydraulic pump with an accumulator, provides relatively constant pressure. A damper secured to the piston adders has an additional drive for providing precise location at the end of damping. An incremental paper tape feed with a four motion rack with toggle action indexes the air reader.
Abstract:
A pneumatic, perforated tape, intermittent motion reader is connected to a pneumatic-to-hydraulic interface in a hydraulic control system. A hydraulically controlled pneumatic purge system is provided for ejecting or purging foreign matter from the pneumatic reading lines between successive cycles of reading by the reader, by blowing air under high pressure through the lines in the reverse direction to the direction air travels when the reader is reading. Reading is blocked during the purging cycle by locking diaphragms in the interface.
Abstract:
1,250,649. Article gripping. INTERNATIONAL BUSINESS MACHINES CORP. 17 Dec., 1968 [2 Jan., 1968], No. 59926/68. Heading B8H. [Also in Division F1] An article handling device comprises a gripper unit 45 which is simultaneously oscillatable longitudinally and transversely to facilitate coincidence of the article and a part to be engaged thereby. The gripper unit 45 comprises two jaws 406 mounted on parallel links 414 which are pivotable about pins 411 to grip an article when the remote ends of two of the links are opened against spring bias by a fluid pressure operated wedge cam 409. The unit 45 is detachably mounted on a shaft 412 including a detent device 413 which is locked in the attached position by pressure fluid supplied to the jaw operating cam 409. The shaft 412 is mounted in a manipulator 38 which is driven by a digital drive, and incorporates a pulley 415 rotatable by a drive cable 69, the pulley rotating the shaft through bevel gears 415, 416, a bellows coupling 419 and a pin 900. The shaft 412 is longitudinally oscillatable by an hydraulically oscillatable piston 436, coupled to the shaft 412 through a flexible tube 420, the coupling 419 facilitating this motion relative to the manipulator 38. Transverse oscillation of the shaft 412 is effected by hydraulically oscillatable pistons 429, 430 engaging opposed sides of the shaft 412, suitable transverse clearance being provided between the shaft and manipulator 38.