Manufacturing journalist, TR Cutler, recently profiled the OEE Calculator by Memex Automation for Industrial Electronics Today.
The leading OEE (overall equipment effectiveness) Calculator, quantifies the increase in Income From Operations (IFO or EBITDA) for Same Sales Volume and Sell Everything scenarios for various improvement criteria. The OEE ROI calculator is a very preliminary ‘rough cut’ analysis tool for developing a business case (to engage real-time manufacturing performance data for shop floor machines in manufacturing plants). Part of the reason Calculator is ‘rough’ is because a Plant average is used for several important parameters such as OEE, shift output, and quality rate.
Much greater precision can be developed by using actual OEE data differentiated by product run and by work station. Future monitoring and proactive use of the information provided by an installed system significantly improves accuracy of alternatives; these data assists leadership teams in setting direction and focus to maximize results quickly. Rattray noted that, “First Look results are generated using Small, Medium and Large preselected productivity improvements to show the range of possible results.”
The current input values in the OEE Calculator, use hypothetical but realistic values for a machine tool plant. It is estimated that for most manufacturing plants, the Calculator results have a confidence level of eighty-five percent (85%), plus or minus three percent (3%.)
The OEE Calculator does not apply the Theory of Constraints (TOC) therefore, if the proper application of tools and OEE improvement is not achieved at the constraint, then the increase to IFO is also limited. The quality factor usually has more impact than Availability or Speed Factor for bottom line improvement. When waste or scrap is improved, OEE improves; the result, less material needed. It is important to apply Lean Six Sigma techniques to your manufacturing operations, so as to achieve significant results. Memex offers services in this area, as documented in our website.
Memex suggests that users of the OEE Calculator, “Closely account for the change in material since it determines the new amount of total units made and applies the base case unit material cost to the total number of new units required to make the good units for the associated scenario.” The Calculator zeroes all of the improvement parameters and individually examines what one (1) OEE point improvement is worth for Availability, Speed Rate, and Quality. This data provides the user an approximation of financial impact on IFO for types of improvement activities.