EXCHANGEABLE CUTTING HEAD

摘要

Provided is a replaceable machining head wherein:
fractures on the tool attaching portion do not occur; the production cost is minimized; the tool life of the working tool will be lengthened; and
the head body is free from a risk of falling off during replacement.
In the replaceable machining head 1, a cutting edge section 3 is formed on the front side of a head body;
a tool attaching portion 4 to which a working tool is to be attached, is formed on the rear end side of the cutting edge section 3;
tool attaching faces 4A are formed in the tool attaching potion 4;
the surface of the head body 1 is coated with a coating film; and
the number of droplets or macro particles having convex shapes with a size of 0.3µm to 5.0µm, is 200 or less, per area of 40µm×60µm on the surface of the coating film over the tool attaching faces 4A.