
For 28 years,
JobTime Systems, Inc. has been proud to lead the transformation of the
world’s production scheduling software, to
create powerful finite scheduling
software. The term ‘finite’ not only means ‘limited’ but also emphasizes
‘realworld’, from the viewpoint of the actual shop planners and
schedulers. The supply of shop capacity is based on shop departments,
work centers, machines, and working calendars.
Gone are the days of
schedules which show abnormal overloads e.g. of 580%, 322%, or 135%.
The implication of overloads is that some jobs will finish past their duedates. We educate our users to see that
estimated lateness is a warning signal and is therefore a positive not a
negative, because it gives a clear warning sign on each job that can
potentially find itself in latedelivery if corrective action is not
taken promptly. This means JobTime helps you be proactive, and to also
be proactive on precisely the right subset of your jobs. This is exactly
how you can cut late deliveries dramatically. This principle is your key to
success in implementing Finite Scheduling Software.
JobTime^{®}5
displays the estimated future
delay at each step in an estimated late job. This lets you know exactly
where and when it is critical to add capacity by one means or another.
JobTime’s innovative
Overtime Requirements Analysis shows, in aggregate for all late jobs,
exactly where and when and by how much capacity would need to be added
to be able to consistently achieve 100% ontime performance.
The scheduling system is
tied to task durations which are expressed by each operation’s estimated
setup time, production rate, and planned movetime to the next
operation. But an estimate is still only an estimate; in reality,
variations are going to happen. Nevertheless, deviations from estimate
tend to be selfcancelling given a sufficiently large number of
observations.

Therefore, the work
centers which are indicated as contributing the greatest amount of delay
to late jobs are clearly the same work centers which require highest
priority in your efforts to expand capacity. And the work centers which
have extremely low projection future utilization are the same work
centers where labor (and conceivably even machines and tooling) might be
freed up and reassigned to work centers which will be running short of
capacity.
Therefore, a scheduling
system which is based on progressively better and better estimates of
setup times and runrates has the potential to generate feasible
schedules that can actually be followed on the shop floor, because they
consider the most salient constraints placed on manufacturing
operations.
The
JobTime^{®}5
Scheduling Software gives schedule visibility
that enables you to accomplish the following goals:

short interval schedules which are followed consistently by the
shop floor; 

accurate recognition of plant capacity limits and achievable
delivery times; 

detailed visibility of your scheduled operations throughout the
shop 

plant throughput increases of 25% in flow shops and 510% in
jobshops, with no increase in labor; 

inventory reduction of raw material, WIP, and finished good
inventories of at least 510% even after you implement a highly
successful lean revision of your manufacturing system;


50%75% reduction in late deliveries and lastminute expedited
freight shipment expenses; and 

stronger competitiveness because of superior ontime
performance. 
