PROTRUSION FORMING DEVICE AND METHOD FOR FORMING PROTRUSION PART FOR HEAT EXCHANGER

摘要

A protrusion forming device includes a holding portion holding an object that is be processed, a tool bit having a cutting portion capable of cutting an object held by a holding portion, and a drive portion capable of driving the tool bit. The tool bit is movable along a cut-in pathway so that the cutting portion is inserted into the object. The cutting portion is movable along a further-cut pathway so as to form a protrusion part that is cut in a linear shape and is connected to the object. The tool bit continuously contacts the protrusion part while moving along a forming pathway such that the protrusion part extends perpendicular to an outer surface of the object.

主权项

1. A method for forming a protrusion part extending perpendicular to an outer surface of an object that is to be processed, the method comprising:
moving a tool bit along a cut-in pathway intersecting with the outer surface of the object so that a cutting portion of the tool bit is inserted into the object; further moving the cutting portion inserted into the object along a further-cut pathway along the outer surface of the object so as to form a protrusion part that is cut in a linear shape and is connected to the object; and further moving the tool bit along a predetermined forming pathway while keeping the tool bit in contact with the protrusion part.