Aluminum wheel hub cutting tools are primarily used in the machining process of wheel hubs. Their core function is to perform high-precision milling, turning, or cutting on wheel hub blanks or formed parts to fabricate critical structures such as the wheel rim, spokes, and mounting surfaces, ensuring dimensional accuracy and surface finish.
Comparison of Different Types of Insert
| Material Type | Representative Grades / Characteristics | Application Scenarios |
|---|---|---|
| PCD (Polycrystalline Diamond) | High hardness, excellent thermal conductivity, non-stick to aluminum | Preferred material for aluminum wheel hub machining |
| CBN (Cubic Boron Nitride) | Suitable for high-hardness alloys or heat-treated steel | Rarely used for aluminum, but applicable for composite wheel hubs |
| Carbide | Low cost, good toughness, can be coated with TiB₂ / DLC anti-adhesion coating | Suitable for rough machining or low-cost applications |
| SCD (Single Crystal Diamond) | Extremely sharp edge, capable of mirror finish | Used for high-end finishing or decorative surface machining |
Main Objectives
High surface finish (Ra ≤ 0.1 μm)
High cutting efficiency
No built-up edge (anti-adhesion)
Dimensional stability and scratch-free surface
Key Performance Requirements
Sharp cutting edge (to prevent built-up edge)
High thermal conductivity (to reduce cutting heat)
Excellent anti-adhesion (aluminum does not stick easily)
High wear resistance and dimensional stability
Working Principle
Using a PCD insert as an example, the working principle for aluminum wheel hub machining is as follows:
High-Speed Cutting
Spindle speed: typically 3000–8000 rpm
Cutting speed: up to 600–2500 m/min
Cutting Mechanism
The sharp cutting edge removes aluminum chips → chips form as continuous ribbons due to the positive rake angle → chips are discharged smoothly along the polished rake face.
Because PCD has excellent thermal conductivity, heat is rapidly dissipated, preventing surface burns on the workpiece.
Cooling and Lubrication
Generally uses Minimum Quantity Lubrication (MQL) or dry cutting to prevent aluminum chip adhesion and splashing.
Mirror Cutting Stage
Uses single crystal diamond (SCD) inserts, with cutting depth of only 0.05–0.2 mm.
Achieves mirror-reflective surface through ultra-fine cutting.
Summary
| Item | Description |
|---|---|
| Main Application | Roughing, finishing, and mirror machining of aluminum alloy automotive wheel hubs |
| Typical Insert Material | PCD (Polycrystalline Diamond) |
| Key Characteristics | High hardness, anti-adhesion, high thermal conductivity, excellent surface finish |
| Working Method | High-speed precision cutting, smooth chip evacuation, rapid heat dissipation |
| Final Goal | Achieve efficient, stable machining with bright, scratch-free surface appearance |
Turning Inserts:CNMA120404、CNMG160608、DNMG150408、SNMG120408、SNMA120404、TNMG160408、WNMG160412、CCMT09T304、DCMT11T308、SCMT09T304、VBMT110304、TNMX1509L、RNMG120400、KNUX160405、TNMX1509
Milling Inserts:APMT1135PDER、APMT160408PDER、ADMT11T302ER、TPKT040202R、TPKT060308R、TPKT190608R、ANMX110504PNR、ANKT040202R、LNGU110404ERGE、WNMU050408EN、XNEX080608TR、RPMW08T2MO、RPMT10T3MO、SDMT120512、PNEA110408
Drilling Inserts:WCMX030208、SPMG07T308、SPMG110408、TPMT16T312R、R424.9-13T308、TPMX1403-RG、TPMX240512-LG、800-06A、800-08T308H、R800.24-06T308M