摘要:
The movable contact (52) of an on-off switch is moved, through drive means (5), by balls (4) rotated by a disc (23) in the peripheral surface of which regularly spaced cavities are provided to accomodate the balls. The balls can be either withdrawn or inserted through a channel or bore (20) which can be closed by a plug (7) so that the switching pattern can be varied depending upon the angular position of the disc. The device can be used e.g. in a selector switch or a program control apparatus.
摘要:
A memory and control device utilizes rotating cams for moving a positionable device, such as a power seat, to pre-set positions and selectively repositioning the device to such pre-set positions, and is also provided with a manual control means to position the seat in any selected orientation. A different motor is utilized for each of the three directions of actuation associated with the device, each of said motors being controlled by solenoid actuated contacts so that the high current required to operate the motors does not pass through switches operating the motors. The switches may be disposed in a control panel and may be actuated by finger depression of actuation areas positioned and marked to correspond to the desired positioning direction.
摘要:
A programmer includes an intermittently rotating drum, having thereon a series of actuators arranged in a pre-selected manner, for actuating in a predetermined order, a plurality of devices, such as fluid valves, each of which, when actuated, causes an operation to be performed. The drum is indexed by a stepping motor controlled by impulses of energy to a pilot valve in response to rotation of the drum. The actuators are removably mounted on the drum, so that the programming of the series of operations as to the order thereof, and duration of each, can be done quickly and easily, in advance. Individual valves can also be shut off when not needed.
摘要:
In accordance with a first preferred embodiment, a control method comprises monitoring a position of a motion control axis and controlling an output device responsive to the position of the motion control axis. The controlling step further includes latching a cam element that controls the output device, and unlatching the cam element that controls the output device. The, manner in which the latching step is performed and the manner in which the unlatching step is performed are configurable in a programming interface. The programming interface is capable of receiving a latch position for the cam element and an unlatch position for the cam element. The programming interface is further capable of receiving additional configuration information to configure the manner in which the latching step is performed and different additional configuration information to separately configure the manner in which the unlatching step is performed. The latching step and the unlatching step are performed in the manner configured in the programming interface. In accordance with another preferred embodiment, a programming interface for a control system comprises an axis motion control instruction and an output cam instruction. The axis motion control instruction is executable to control movement of a motion control axis. The output cam instruction is executable to control a state of an output device responsive to a position of the motion control axis. The programming interface permits the axis motion control instruction and the output cam instruction to both be used in a common user program.
摘要:
A cam and follower system for use with an automatic doffing system of a rotor spinning machine. The system includes a cover member for covering the cam lobes of a cam gear found in the automatic doffing system of a rotor spinning machine. The system also includes a cam follower for connection to the automatic doffing system. The cover member has cam surfaces which are complimentary to and which act to renew the original cam surfaces of the cam gear's cam lobes. The cam follower is adapted to engage and ride upon the cover member's cam surfaces during operation of the automatic doffing system.
摘要:
An adjustable cam unit adapted to be mounted on a cam shaft for rotation with the shaft comprising a hub adapted to be mounted on the shaft for rotation therewith, and an adjustable cam assembly on the hub comprising first and second cam disks, each having a peripheral notch, mounted on the hub for rotation on the axis of the hub to different positions of angular adjustment relative to one another to vary the conjoint peripheral notch defined by the peripheral notches of the two disks, and for conjoint rotation on the axis of the hub to vary the phase of the notch relative to the cam shaft. A switch-mounting plate is pivoted on the hub adapted to carry a switch for actuation by the cam assembly, with a special mounting permitting the switch to yield away from the cam assembly. The unit further includes releasable locks for retaining the disks in adjusted position on the hub.