Finite Scheduling Software 



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 ‘real-world’, 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 due-dates.  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 late-delivery 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.  

JobTime5  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% on-time performance. 

The scheduling system is tied to task durations which are expressed by each operation’s estimated setup time, production rate, and planned move-time 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 self-cancelling 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 run-rates 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 JobTime5 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 2-5% in flow shops and 5-10% in job-shops, with no increase in labor;


inventory reduction of raw material, WIP, and finished good inventories of at least 5-10% even after you implement a highly successful lean revision of your manufacturing system;


50%-75% reduction in late deliveries and last-minute expedited freight shipment expenses; and


stronger competitiveness because of superior on-time performance.





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