A movable spindle tool machine, such as a printed circuit board line
drilling machine includes a base and a spindle mounted to the base. A
magazine is mounted proximate the spindle for storing a supply of tools. A
pitch independent tool changer is moveably mounted relative to the base
for transferring tools from the magazine for insertion into the spindle. A
tool locator is mounted in line with the spindle. The tool changer is
operable to initially transfer a tool from the magazine to the tool
locator to align the tool with the spindle and thereafter transfer the
tool to the spindle for insertion into the spindle. The spindle is mounted
to a nested outrigger guide. A positioning system can move two or more
spindles simultaneously. A bit detector in a pressure foot button uses
fiber optics to detect broken bits.