Divided Strings Essay

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Case Study 1 - Center Board Hopper and Feeder Observations The screw feeder blow feeds screws to screw driving equipment from a remote location. The centerboard hopper feeders are noted for quiet operation and reliable feed. Centerboard will not damage screws. Vibratory feeders are self-contained systems, comprising a specially tooled bowl feeder that orients the parts, a vibrating drive unit, upon which the bowl feeder is mounted, and a variable-amplitude control box. Analysis The Center Board Hopper and Feeder consists of a blade with a shaped track along its upper edge. This blade undergoes a reciprocating motion in the vertical plane, being pushed into and out of a hopper populated with parts in a cyclic fashion. In its topmost position, the blade is in line with a chute. Thus, all the parts which enter into the blade during its upward motion, fall into the chute as it reaches the uppermost position. Vibratory bowl with a base along with a delivery chute tangential to the base causes the parts to move around and those with the correct orientation fall into the delivery chute. Due to lack of orienting devices in the hopper, parts have to be taken off in the orientation that they naturally adopt in the hopper. Numbers of screws produced by the Center board hopper is constant as there is a sensor along the runway of the screws. When the sensor senses the screws, the machine will push the screws out accordingly. Compared to the vibratory bowl feeder, the number of screws being produced depends on the numbers of screws that moves up the circular track when the feeder vibrates. Discussion The round rubber belt can fit the track easily and is safe to be use. This is because it causes slippage that it is safe when the safety clutch is in use. When the feeder is blocked the machine, rather than forcing its way through, the machine will stuck there. The

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