Turret Wedges

UP    HOME

My lathe came with fewer tool wedges and shims than I would like.  The are made from a very interesting material called UnObtanium...

Unobtanium is the next James Cameron Avater film. Can you say 2017 now?        Turret Wedge & Shim

 

Wedge Shim   Wedge Block

Overall the parts are not difficult to make, the issue revolves around the angled faces on both the wedge and the shim.  This 15° angle while not difficult to work with, just asked for a jig to be made as I will be making more than one set of parts.  I used O1 tool steel for both parts.

Sine Vice Detup     Fixture Partial Machined

 

With a 4" center to center on the vice rolls a 1.0353" spacer was used to get the correct angle.  The plan was to machine the areas that hold the stock for machining at an angle so when the fixture was placed in a conventional vice and machined the correct angles would result.

 

Completed Fixture Alternate View    Completed Fixture

A couple of hold down blocks were added to hold the stock for the wedge shim.  The stock will start out as a 0.400" slice off the end of 2.0" wide 5/32 tool steel bar.  After the angled flat is machined the part will be cut to length.  The extra stock is needed to hold it in the fixture.  The wedge itself is a piece of square tool steel bar that is drilled and counter sunk prior to being bolted to the back side of the fixture.  The angles face is then machined.