The next part is ready, but the fixture is not.
You see the problem every day. The CMM finishes and the next part is ready, but the fixture is not. The machine sits idle, as the inspector works… But the clock keeps ticking.
Slow inspection changeovers in quality departments create hidden loss most teams never calculate or even consider. Profit slips away first and then morale follows. Customers eventually feel it through late shipments or poor quality.
Start with a number most shops already know. The average hourly cost of running a CMM falls somewhere between 100 and 150 dollars per hour. This includes labor, machine depreciation, software, calibration, and overhead. Learn how to calculate your hourly rate here.
When the machine is not inspecting, the cost does NOT stop.
Apply some conservative math.
- One CMM.
- Two changeovers per shift.
- One hour per changeover.
- Two hours per shift with no inspection output.
- 125 dollars per hour.
- 250 dollars lost per shift.
- Two shifts per day.
- 500 dollars per day.
- 250 workdays per year.
- 125,000 dollars lost per year.
And this assumes your shop has super clean setups and a disciplined team. Many quality departments lose even more without even realizing it. And while the money matters, it is not the whole story. Slow changeovers also waste people. Inspectors are forced to wait because setup requires the CMM to be available. Fixtures get built on the granite and the machine sits idle instead of measuring parts. Pressure builds because inspection becomes the bottleneck.
This usually comes from a misunderstanding of how inspection work holding should work. The granite should stay empty. Fixture plates should no longer live on the machine. They live on the shelf, and nothing gets built or torn down on the granite.
With modular CMM fixture plates, inspectors no longer wait for the machine to be idle to prep the next job. The entire fixture is built and lives offline, independent from the machine. When inspection is ready, the complete plate and fixture is loaded onto the CMM and when the job finishes, the complete plate and fixture comes off as one unit. The machine returns to an empty granite, ready for the next part. The swap takes seconds, not an hour.
Nothing gets built or torn down on the granite.
Now, Redo the math with faster swaps.
- Ten minutes per changeover.
- Two inspection changeovers per shift.
- You recover 100 minutes per shift.
- 125 dollars per hour.
- Approxamately 208 dollars recovered per shift.
- 100,000 dollars recovered per year in productive inspection time.
(This excludes reduced overtime, fewer setup errors, improved delivery, and higher throughput.)
And the human impact matters as much as the numbers. Inspectors stay focused on inspection. Programmers plan ahead instead of rush. The quality team stops apologizing for delays.
When inspectors work offline, machines spend more time inspecting and less time being set up. Inspection bottlenecks break and hidden profit stops hiding. Pair your quick swap fixtures with standardized software like CMM Manager to achieve the perfect turnkey solution for your inspection process.
Profits are in the speed of the swap
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