Modern Machine Shop

APR 2017

Modern Machine Shop is focused on all aspects of metalworking technology - Providing the new product technologies; process solutions; supplier listings; business management; networking; and event information that companies need to be competitive.

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42 MMS April 2017 mmsonline.com COMPETING IDEAS Columnist had to put it aside while he began work on another one. Although there were five dif ferent orders o n t h i s e m p l o y e e's d e s k , t h e y w e r e b e i n g addressed and handled consecutively, not at the same time. Multitasking was not really hap- pening, and that was a good thing, because if it had been, all five orders might have been started without any one being completed. • A hard-working machine operator was proud of the fact that she was able to multitask by keep- ing four CNC lathes running at once. The opera- tor would dutifully wait for the end of a machine cycle and immediately go to that machine, remove a completed part from the chuck jaws and load a new one. Unfortunately, the machines' cycle times were different, and frequently two lathes would stop at the same time. On occasion, even three machines would simultaneously not be running, regardless of how fast the operator moved. After the shift was over, it was determined that each machine had only been running parts 30 percent of the time. This multitasking effort resulted in each machine being idle 70 percent of the operator's shift. Of course, the operator- machine ratio was modified soon after, but it was still difficult to keep machines running all of the time, despite the multitasking effort employed. Lean philosophy teaches that, whenever pos- sible, we should star t something and finish it before star ting something else. This leads to faster completion times and better-quality outputs. People don't have the ability to really multitask, and perceived multitasking rarely, if ever, produces the results we need to be successful. Lean philosophy teaches that, whenever possible, we should start something and finish it before start- ing something else. This leads to faster completion times and better- quality outputs. C M M • V I S I O N • F O R M A N D F I N I S H • P R E C I S I O N T O O L S A N D I N S T R U M E N T S • D A T A M A N A G E M E N T Mitutoyo America Corporation | 1-888-mitutoyo | www.mitutoyo.com Mitutoyo's Lineup of SJ Series Portable Surface Roughness Testers View Video www.mitutoyo.com/sj • Portability – Part too large to bring to the lab? Bring the lab to your part! • Versatility – Orient the measuring instrument efficiently in various set-ups. • Capability – Measurement results can be saved, out-put, recalculated, printed and viewed instantly. • Functionality – Complies with most industry surface roughness standards supporting many various analysis parameters. • Affordability – Priced competitively to provide the best precision measuring product in its class. • Accuracy – Highest traverse straightness accuracy in its class* * SJ-500 (Straightness accuracy of 0.2µm/50mm) SJ-210 SJ-310 SJ-410 SJ-500

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