Arc punch and method of using the same

摘要

A punch guide for guiding the application of a punch to a work piece includes a base, a rotatable member coupled to the base, a punch carriage moveable along the base, and an adjustable indexing assembly for adjusting an indexed extent of angular rotation of the rotatable member with respect to the base. The rotatable member is rotatable about a rotational axis. At least one of the base and the punch carriage includes first alignment indicia for identifying a selected distance between the rotational axis and the punch carriage. The adjustable indexing assembly includes second alignment indicia corresponding to the first alignment indicia for setting the adjustable indexing assembly to provide a selected indexed extent of angular rotation that corresponds to the selected distance between the center axis and the punch carriage.