Day: March 18, 2014

Calumet Electronics Tour

Recently, Todd Brassard, Vice President/COO of Calumet Electronics, spent an afternoon giving our group a tour of their operations in Calumet, MI. During this tour, we were able to see the complex process (over 40 steps!) that it takes to produce a circuit board. In their manufacturing operations, there were several examples of Lean Manufacturing and Six Sigma in practice. I’ll talk about a few examples that we saw during our tour.

  • Many pieces of equipment had a three-color light (green, yellow, or red), that indicated the status of the machine, an example of andon.
  • Machines that drilled holes into the circuit boards automatically picked the necessary drill bit needed for the particular hole size it needed to drill, and tested the bit prior to drilling any holes into the circuit board. If a bit is damaged, then the red light on the machine comes on (andon!) so that a worker can come to the machine to inspect the bit and address the issue.
  • Workers that inspect the quality of each of the circuit boards worked in a left-to-right pattern in their work area to ensure that untested circuit boards don’t get mixed in with circuit boards that have either passed or failed the quality inspection (error proofing); only the boards that had passed the inspection made it into the stack on the far right of their work area. These workers also test the circuit boards in small batches of 25 that their computer confirms the count of; this ensures that the whole stack of 25 has been inspected before the next batch can be tested. The computer also says, in clear and large text, “Pass” in green or “Fail” in red (a visual control) when telling the worker the results of the inspection.
  • Todd also noted that for many of their process, they are tracking Cpk, which is the actualized process capability. As a rule of thumb, a Cpk of at least 1.33 indicates a capable process.
  • At the end of the tour, Todd showed our group some awesome data collection and metrics that they’ve begun keeping to track the “health” of their business. To the “data geeks” among us, this was pretty neat!