Removal of Parts from Original Casting

Precision abrasive waterjet cutting for removing parts from their original casting, ie. removing cast medical implants and cast single crystalline turbine blades. Huffman machining systems are capable of a variety of shapes, sizes and complex angles. An integrated CAD/CAM on a five-axis machine ensures increased accuracy.

Process

• A CNC program is made to probe and find the parts on the casting to compensate for cast to cast variation.
• Part is held by casting material, inexpensive and easy fixturing.
• Removes the individual parts without damaging other parts on the casting.
• Excess cast material can be recycled.
• Tolerance is within ±0.005" (0,01 mm).
• Virtually all materials, primarily aerospace and medical implant materials.

Surface Finish

• Surface finish is contingent upon a number of process variables including: material type, abrasive type and feed rates (typically 30-60 rms/0,8 - 1,6 micrometers).

Cycle Times

• Actual cycle times will depend upon part geometry, material type, amount of material removed, feed rate and desired surface finish. Often secondary processes are eliminated to reduce overall cycle time. Overall part throughput may increase by 100% or more.

Features and Benefits

• Available on the Huffman WJ-155 and WJ-156 waterjet systems.
• Fully enclosed work envelope decreases noise level, water spillage and creates a safe work environment for the operator.
• Waterjet process eliminates stress induced by conventional machining methods and the heat-affected zones and crystalline structure changes from conventional machining methods.
• Inexpensive tooling makes going from design to production in a one- day time period.
• Reduced scrap rate with increased accuracy and repeatability.
• Safe and environmentally-friendly waste reclamation system.