I recently received a bunch of new end mills for the milling machine. Most of the endmills I bought were HSS roughers, but I bought two solid carbide endmills. I know that my mill is not the optimal set up for carbide, but I was curious to see what a $8 carbide endmill can do.
I could have easily used my ER 20 holders, but I chose to make some heat shrink tooling. Heat shrink tooling or shrink fir tooling works by heating up a tool holder so that a hold expands to allow an endmill to slip in to the holder, but as the tool holder cools, the hole shrinks and clamps on to the endmill.
This type of tooling is typically found on bigger 5 axis CNC mills, but I was curious to see if I could make it here in the workshop. I also need a tool with a lot of clearance for a part I need to make. I hope you enjoy the video.
Mill: Sieg x2.7l
Lathe: Sieg C3 7x14 Mini Metal Lathe
#machining #DIY #HeatShrinkTooling
Timestamps
0:00 - Introduction
1:22 - What Is Shrink Fit Tooling
2:13 - Making The Tool Holder
7:56 - Endmill Tolerances
8:53 - Making The Heating Holder
9:26 - Heating Up The Holder
10:00 - Fixing The Hole
10:57 - Inserting The Endmill
11:50 - Testing The Tool Holder
14:17 - Final Thoughts (And Don't Use This With HSS)