Since the robot's portion of the work cycle requires much less time than the machine tool in Problem 8.6, the possibility of installing a cell with two machines is being considered. The robot would load and unload both machines from the same incoming and outgoing conveyors. The machines would be arranged so that distances between the fixture and the conveyors are the same for both machines. Thus, the activity times given in Problem 8.6 are valid for the two machine cell. The machining cycles would be staggered so that the robot would be servicing only one machine at a time. The tool change statistics and uptime efficiencies in Problem 8.6 are applicable. Determine the hourly production rate for the two-machine cell. The lost time due to tool changes and the uptime efficiency should be accounted for. Assume that if one of the two machine tools is down, the other machine can continue to operate, but if the robot is down, the cell operation is stopped.