A small job shop is manufacturing small bushings made out of 625 Inconel round bar stock for the aircraft industry. They are using an Okuma Cadet LNC-8C with low pressure coolant to manufacture their products.
Previously, the customer was using a 19/64″ cobalt drill to drill a pilot hole while using a peck cycle. They ran the tool at a speed of 40 SFPM, 514 RPM, 0.006 IPR, and 3.08 IPM. The tool had a life of 12 parts. This process was followed by a 5/16″ diameter carbide tipped reamer running at a speed of 38 SFPM, 475 RPM, 0.00.6 IPR, and 2.85 IPM. This tool had a life of 50 parts. Seeking to improve their production, the customer was having concerns about cycle time and tool life and was also having difficulty drilling.
AMEC’s application engineers recommended using the ASC 320® High Penetration Drill, item #335E3125A21M. To ease the customer’s anxieties, we used the AMEC Guaranteed Test program. The results were excellent. Not only did the ASC 320® tool eliminate the reaming operation, it also saved valuable spindle time by eliminating the peck cycle. Additionally, the ASC 320® drill produced excellent chip control, increased the tool life to 150 parts, and saved over 4 minutes in cycle time. With the cost per hole reduced from $1.17 to $0.50, our tooling created a savings of $0.67 per part. The customer received a total cost savings of $99.90 or 43%.
By reducing the customer’s cycle time and cost of production and increasing tool life, AMEC succeeded in providing the customer with an effective solution to their needs.