A contract machine shop that specializes in turning and drilling is producing components for a large manufacturer of military tanks. The part being machined is a large stainless steel ring. They use a Quick Drill CNC VMC with water soluble coolant.
Tool used: Greenfield 17/32″ taper shank cobalt twist drill with 60 PSI flood coolant
- Hole depth = 5.0″ deep hole
- Hole diameter = 0.5312″
- Peck drilling with a full retract every 0.050″
- 60 SFM
- 431 RPM
- 0.008 IPR
- 3.45 IPM
- Cycle time = 10 minutes 8 seconds
- Tool life = 4 holes
The customer needed to lower their cost of production, and they asked Allied for a solution.
Allied recommended the ASC 320 solid carbide drill.
Tool used: ASC 320 9xD drill (item 390E05312A21M)
- No peck operation
- 135 SFM
- 971 RPM
- 0.006 IPR
- 5.82 IPM
- Cycle time = 51.5 seconds
- Tool life = 228 holes
The ASC 320 drill increased the tool life, reduced the cycle time, and produced a superior hole quality while lowering the overall cost of production.
- Increased tool life by 56%
- Total cost savings = $43,150.40 or 91.7%