Using a 45 deg chamfer tool

[tobyaxis]

Originally Posted by Dugg I've had some difficulties with chamfer tools in that I now input .062" for the tool tip and the same .062 for the tool diameter. I use tool comp with lead in and lead out, set the Z at -.035 and then use changes in the Z and D to get the edge I'm looking for. I'm sure there's an easier way, but I plod alone with what I know hoping to learn more.

Matts Method is a great way to achieve what you want. You can also go to the Manufactures website and get the specs on your tooling to help you. This way there is no constant running back and forth to the shop floor to measure tools that your going to use. All is good in the world of "WWW".

BTW: Keep using Cutter Comp so adjustments can be made for tool wear.

[Matt Berube]

constant running back and forth to the shop floor

Well all you have to do is save it to your tool library. I am WAY too lazy to actually run back and forth...

[tobyaxis]

Originally Posted by Matt Berube Well all you have to do is save it to your tool library. I am WAY too lazy to actually run back and forth...

I don't know who buys what lately but you have to realize that most Shops today don't always buy from the same company all the time. If you take a simple 90 Degree HSS Spot Drill and compare it to 3 different name brands you will get 3 different tip geometries that vary from .005 to .015 (Tool Tip Flat). When using it for a thread Lead or to put a Chamfer on a Profile the cutting size will be different. That is why I also prefer to use Cutter Comp when profiling. Check the Geometry of a 82 degree counter sink. Consistancey these days is terrible.

This is also why I suggest that when someone touches a tool off (90 Degree Spot Drills) to add .02 to the Z offset for tools 1/8-5/16 and .03 for anything higher up to Half inch.

Usually someone can scrap one part, but what if they only have one part? Parts get rejected for stupid stuff these days as well.

LOL. "What do you mean my Chamfer is a half of a degree Off ? " "What do you think the function of a Chamfer is anyway ?"

The other day I heard someone ranting that their part was rejected because their radius was .001 Oversized using a 1/16th Form Tool. Go Figure, tool was made in a different Country.

BTW: I still don't trust CMM's.