How To Set Up A Parting Off Tool

Even if the tool is set exactly on centre before parting these effects will tend to force the tool below centre as the work progresses.

How to set up a parting off tool. Attach the dial indicator to a Noga holder found in the metrology cabinet and place gently on the guideways DO NOT slide the holder along the guideway. Often enough to avoid having to face it off in a second op. Ensure the tip of the tool rests at the same height as the center of the stock.

I say perpendicular instead. Second if the tip of the parting tool is ground at an angle it will minimize the nib further. 3 Go all modern and use an insert type parting blade.

As I see it the front mounted tool will tend to be forced downwards while the work is trying to climb the tool. Alternatives to a rear tool post for better parting off are-1 Remove the top slide and mount a hefty block tool post direct on the cross slide. Set the height of the tool lay it flat against the face of the part then lock the tool in place.

Choose an insert geometry designed for parting-off. Set of 2 HSS Trapezoid Blades 18x 34 Wide x 6 Long for Lathe Parting Cut off Tool Holders-Hard Ground. If the carbide cutter has an angle on it it is usually quite small.

First setting proper tool height will minimize the nib. Ensure that the parting tool is perpendicular to the axis of rotation and that the tip is the same height as the center of the part. Simply set it down in place Position the contact tip against the toolholder and move the cross slide.

The solution when using carbide inserts for parting off it is best only to use then to within a millimetre or two from the middle of workpiece. Heavier the better with a directly held parting tool preferably next size up for extra blade stiffness. Then use a conventional HSS parting tool cutting to the right to finish the job.