Production Machining

OCT 2018

Production Machining - Your access to the precision machining industrial buyer.

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productionmachining.com :: 17 ,ĞůƉŝŶŐWƌĞĐŝƐŝŽŶDĂĐŚŝŶĞ^ŚŽƉƐĞDŽƌĞWƌŽĚƵĐƟǀĞĂŶĚWƌŽĮƚĂďůĞ According to our analysis of the PMPA Business Trends Sales Index, the demand for our products has shifted steadily upwards in the market. ÜiÛiÀ]vÀÌi«>ÃÌwÛiÞi>ÀÃ]Üi}Þ>ÌÕÀ month-to-month changes, we saw no compelling change in our demand. By not seeing that the market has changed, we miss the signal that this market requires us to make changes in our methods of providing parts. Our monthly incremental view has kept us from seeing the larger transformation of the market demand that we serve. 02& ,(/' ''& ''( ''* '', ''. '(& '(( '(* '(, '(. ')& ')( ')!'* '*!'+ '+!', ',!'- '-!'. (&')!(&'. 02& '+)( & (& *& ,& .& '&& '(& '*& ',& '!!') '!!') '!!') '! !'* '!!'* '!!'* '!!'* '! !'+ '!!'+ '!!'+ '!!'+ '! !', '!!', '!!', '!!', '! !'- '!!'- '!!'- '!!'- '! !'. '!!'. (&')! (&'. " # Cycle Time Minimizing cycle time has been the predominant production philosophy in the screw machining business since before the Eisenhower administration. It is genuinely easy to understand, even for the college educated: "If time on our machines is really what we are selling, then making parts with less time is the goal." Minimizing cycle time will maximize the production of parts for the time that we are operating. Simple logic. Except that by running at bleeding edge cycle times, we reduce our process capability, drive our tools beyond their optimum and thus require an operator to maintain surveillance and frequent inspections. In addition, these high Change in Demand: Time to Change Your Thinking By Miles Free – Director of Industry Research and Technology Continues on page 19 In today's market here our shops are running at or near capacity, are e doing enough to assure uptime of our production processes? speeds require us to plan more frequent tool adjustments and changes and deal with far more frequent downtime, because the operation is not truly optimized for productivity, just for speed. What if by increasing our cycle times a modest amount, we could bring our tooling and control of built-up edge, and thus dimensional conformance, into a much higher level of statistical control? What if by reducing speeds we could iÝÌi`ÌivivÕÀÌ}LÞ>Ã}wV>Ì«iÀViÌ>}i¶ What if by running at more modest, less demanding speeds, we could actually allow our machines to run lightly attended for a couple of hours after the end of the shift, sequestering Ìi«>ÀÌÃvÀVwÀ>ÌvV«>Vi]LÕÌ}iÌÌ}Óx percent (or more) production time than the normal shift?

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