Cutting Head Assembly
Product Name: Cutting Head Assembly
Description:
The cutting head assembly is the terminal device of a waterjet cutting system, responsible for converting ultra-high-pressure water (typically 60,000–90,000 psi) into a coherent, high-velocity cutting stream . It houses the critical components that form and focus the waterjet, and in abrasive systems, mixes garnet with the water stream to cut hard materials.
Depending on the application, the cutting head can be configured for abrasive waterjet cutting (for metals, stone, glass, composites) or pure water cutting (for rubber, foam, plastics, textiles) . Advanced 5-axis cutting heads add A-axis (tilt) and C-axis (rotation) capability for bevel cutting and complex 3D profiling .
Applications:
Terminal device for converting high-pressure water into a cutting jet
Mounted at the end of the Z-axis motion system, connecting to the on/off valve
Suitable for cutting virtually any material, including metals, stone, glass, ceramics, composites, rubber, foam, and plastics
Available in 3-axis (flat cutting) and 5-axis (bevel/3D cutting) configurations
Features:
High-Pressure Rating: Engineered for continuous operation at 60,000–90,000 psi (approximately 4,137–6,200 bar)
Precision Alignment: Components are coaxially aligned to maintain jet coherence and cutting accuracy
Modular Wear Component Design: Only three primary consumable parts (orifice, mixing chamber/insert, mixing tube) require regular replacement
Durable Construction: Manufactured from hardened stainless steel to withstand abrasive erosion and high-pressure cycling. Advanced models feature IP67 ratings for harsh environments
Multi-Axis Capability: Available with AC five-axis design for bevel cutting up to ±60° or more
Maintenance:
Daily / Pre-Operation Checks:
Inspect the mixing tube (focusing tube) for bore wear, ovality, or flaring; replace if cut quality degrades
Inspect the jewel orifice for wear; replace if the waterjet stream becomes divergent
Ensure all connectors (high-pressure water pipe, abrasive inlet hose, rotary connectors) are tightly clamped
Apply thread sealant (e.g., "blue glue") to connection threads to prevent loosening and damage
For 5-axis heads, verify A-axis and C-axis are exactly at reference points before machining
Post-Operation:
Lift the Z-axis to a safe height to avoid collision with the mixing tube when loading/unloading parts
Check HP water pipe, abrasive inlet hose, and wires for damage
Consumable Replacement Guidelines:
Jewel Orifice: Replace when the waterjet stream is split or divergent, or cutting performance degrades . Diamond orifices offer longer life than sapphire.
Mixing Tube: Replace when cut quality deteriorates (rougher edges, slower cutting) or when bore wear is visible
Abrasive Inlet Hose: Replace if clogged (clear with compressed air) or if significant wear/cracking is visible
Rotary Connector Seals: Replace if water leakage occurs at rotary joints
Troubleshooting Common Issues:
General Best Practices:
Perform maintenance in a clean area; wear gloves to prevent contamination of new parts
Apply high-pressure grease to seals and O-rings during installation to prevent dry startup
Always fully depressurize the waterjet system and follow lockout/tagout procedures before any maintenance
For 5-axis heads, calibrate periodically; do not disassemble without proper training
