And that taper can diminish the engine's performance. Unlike more traditional static tooling, the CABB tool can be programmed to expand as it travels down the cylinder. The pressure change is relative to the movement of the tool. This straightens out any imperfections that normally occur. The end result is a nice straight cylinder.
Coolant is activated to a precise pressure level to force the insert to slide out.
Once the insert is in place, it does its job before the coolant is deactivated so the cutting tool can retract and the entire tool can exit the part. It's very important for cylinder bores to be honed the right way, so we had to figure out a way to monitor the honing operation in process. What they came up with is an infrared gaging system that operates using the same technology as your average TV remote control. In this case, though, the transmitter's doing much more than surfing you from one ESPN channel to another. It's actually sending information regarding its exact position, the cylindricity of the bore, etc to the machine's control.