Somma broaching tools

Tool Blanks. Cut Off Tooling. Swiss Tooling. Tool Holder Bushings. Turning Tools. Max-Bar Catalog. Diamond Insert Tooling. Live Tooling. We have been gradually integrating Forte into our product line, and beginning in , Somma Tool Company will be manufacturing all of our broaches from the toughest material available! For most common materials a TiN coating will help the broach. TiCN will help when machining aluminum, cast iron or brass. TiAlN is recommended for broaching or nickel. Alcrona is the best for machining Inconel, titanium, and stainless steels such as or The bearings on the smaller broach tool holders 8mm shank broaches are designed to run at speeds up to RPM.

For these materials, you should go no lower than a feed rate of. The quickest and easiest way to center a broach can be seen in this video: You measure the across-point or OD of the broach to be used and install the broach into the holder. Then install the holder into the machine. In a piece of scrap stock, drill and ream a hole to.

Bring the broach head manually to within. Continue jogging the turret towards the hole until the broach head is no longer separated from the shank. Finally, tighten up the two cap screws while making sure that the broach and spindle can still rotate freely.

This method will get you on center within approximately a. The quick formula to calculate the start drill based on this is 1. This will lessen the cutting force needed to broach. The formula to calculate the start drill based on this is 1.

This is absolutely necessary. If your print does not allow for the countersink, you can make the part longer and face off the countersink after the broaching process. You can also put a recess at the bottom of the hole — again, greater than the across-point or OD. This is optional; however it will help the chips to clear out of the hole without having to go back in to drill them out after the broaching process. For external forms, there are no ANSI-type standards.

However, we do recommend turning the OD of the bar to below the across-point or to the OD of a non-polygonal broach. This will reduce the cutting pressure necessary by creating multiple chips. Turning an optional recess smaller than the ID at the end of the broached feature will also help in clearing chips from the workpiece. There are a few common features on every broaching tool. First, every broach tool has a draft angle. Each broach tool also has a face angle.

These create a sharper cutting edge on the broach face and can vary on the broaches for different materials.

Internal broaches are located on their shank and held in place by a set screw clamped onto a whistle notch. External broaches are located on their outer flange and held in place by a spindle cap and drive pin. Yes, there is.