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What info is needed to design a work station
Workability, incoming material, outgoing material, operator space and access to equipment, location of waste and rejects, fixture and tools, scale of drawing.
what is the correct work station height
elbow height
Muda
DOWNTIME
defects
overproduction
waiting
non utilized employees
transportation
inventory
motion in excess
extra processing
Jigs
what will add to operator space
material, equipment, fixture size
principles of motion economy
is a collection of guidelines that are used in workstations design to achieve the most effective and efficient design possible. the only limit if the engineers creativity.
Workstation environment
reduce vibrations by redesigning at the source or by isolating the person from the source, vibration is affected by exposure, acceleration, frequency.
Hands motions
Hands should operate as mirror images
start and stop at the same time
move in opposite directions
both hands should move at all times.
what height should workstations be designed for
average
basic motion types
Ballistic Motions ( created by putting one set of muscles in motion and trying not to end those motions by using other motions.) Controlled or restricted motions ( opposite of ballistic )
what dBa does osha require hearing protection
85+
Ballistic motions
created by putting one set of muscles in motion and trying not to end those motions by using other muscles.
should devices be designed to be adjustable
true
release the hands as much as possible using
foot operated control devices, Conveyors, hands are expensive fixtures,
115
restricted motions
opposite of ballistic motions
what is operator space
36" x 36"
What should be incorporated into workstation design as much as possible.
Gravity
Noise reduction
Placing barriers to reduce transmission, absorbing the reflected or casual noise, reducing the volume or spectrum of the noise generator.
continouse motions
curved motions that are more natural
if two workers are back to back what space is acceptable
60"