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“It could be a new project with them facing a serious issue. It might be a problem with part quality, or cycle time or delivering parts in time or total cost, but it’s almost never because of the cost of the tool since YG-1 offers a very attractive performance-to-cost package.”
Bruhis described how he evaluates and determines an approach to a titanium machining project. “I typi- cally inquire first about the machine capability, whether three-, four-, or five-axis, vertical or horizontal, fixtur- ing and tooling,” he said. He added that in the majority of cases, specific end mills are selected based on axial or radial cut, speeds and feeds, and programming for high-speed and high-efficiency machining.
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Materia
Inconel 718. ( Stainless)
Part –
Jet Engine – Pressure Plate Hole
Operation –
Helical Interpolation
Machine
Okuma 4 Axis
Competitors Tools –
25 competitors 4-6 Flutes style .
Cutting tool conditions – 80 SFM,
18 IPM
0.015 axial drop per pass
- Process
Helical Interpolation
Tools –
Special Titanox 5 flutes double core
CNC WEST February/March 2021
www.CNC-West.com 41
Cutter paths vary and can include profiling, slotting, and pocketing. Workpieces can vary in complexity and size as well. YG-1 has tools for specific materials like titanium, Inconel or aluminum as well as general-pur- pose tools for smaller shops and multiple applications.
“We determine the process and program and run it within a range of speeds and feeds and estimate a cycle time,” Bruhis said. “Once the customer has a chance to run the program that we have set, we then can get feed- back with real machining time results and, if the cycle time is too long and the cost is not in line with expected results, we make the required adjustments.”
Bruhis commented on an aerospace project he re- cently worked on. The target was to improve tool life as it was a jet engine critical part and parameters are not allowed to be changed.
Test Parameters :
1/4x1/4x3/4x2 with 0.045 C/R
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Tool Holder –
EGO FIX Coolant -
Emulsion; flood cooling
Test Results - Tool Life – Competitor 4 - flutes
Uncoated - 12-32 Holes, YG-1 tool 52 Holes
- By design a special tool we improved the pro- cess and the customer buys about 1000-3000 pieces a
month. The total saving was $500,000 on this project.