ABSTRACT
Once the tool is found, the Changeover Expert walks back to the machine and uses the tool, which requires work. The Changeover Expert then needs to either place the tool down on the machine or return it to the tool box or tool board. When this tool is needed again, he or she needs to remember where they last put it. Tools are occasionally required, but sometimes they can be modified to reduce effort. Take, for example, the NASCAR race gun that is used to remove lug nuts. The gun is never shut off as the wheel changer moves from one lug nut to the next; the socket is jammed onto each lug nut while the gun is running at 18,000 rpm. This is possible because the inner sharp faces of the socket are ground off so there are only enough flat surfaces to remove the lug nut.
