The Challenge 
The challenge was to achieve both hard and soft cost savings, as well as time spent on drilling flanges from one side, chamfering the backside and creating a controlled chamfer on the top surface which was a secondary process.

The Solution
We designed an indexable drill with our rear cutting carbide deburring insert along with a fixed pocket chamfer insert to create the precision top chamfer that was required. The spade drill insert also had a special feature that allowed it to chamfer the top side of the bottom hole that was pre-drilled.

The Results
​Four operations were completed in one pass.

The EZ Burr Burr-Free Drill drilled the hole, deburred and chamfered the back all in one step, thus eliminating the secondary step of chamfering the bottom surface on the top hole.

This saved time as well as money, plus the tool life of the Burr-Free Drill achieved a more consistent result and had a longer tool life than the previous method.

EZ Burr was tasked with deburring a series of internal ribs in a very long high-silicon aluminum engine block. A special extra-long (14” OAL) Carbide Series tool with a rear cutting only inserts was required to get down into the internal ribs for the deburring. 

​If that where the only parameters to that need to be met it would be a challenge.  The customer also needed cycle time to remain at 12-15 seconds while running at 1250 RPM and 15.750" IPM. 

EZ Burr had to make an extra length tool that could handle these cutting conditions without adding any cycle time to the process. The insert had to produce a clean, smooth surface and run a consistent number of blocks each and every shift.

The initial testing resulted in a built up cutting edge on the inserts. EZ Burr's solution involved working closely with thier coating vendor to apply the perfect coating to the inserts to get the desired results.

​In the end, the tool design, cycle time and performance all met the stringent requirements as specified by our customer. We also made sure to always have a batch of these specially coated inserts ready for release at our local distributor, and enough long reach arbors on hand at EZ Burr to have ready to deliver in less than 2 weeks.

If you have an unique deburring application, get in contact with one of our F&L Technical Sales team members!  We'd love to help you out!