Application Background
In the hardware of humanoid robots, actuators and sensors are two core assemblies. The performance of four key components – lead screws, reducers, motors and sensors – directly determines robot production cost and mass-production schedule. As the industry evolves, component manufacturing is shifting from prototype machining to mass production. As an integrated R&D and manufacturer of superhard cutting tools, Worldia develops customized machining solutions for core robot parts including planetary roller screws, nuts, reducers, fasteners and brackets. Taking hard turning of nut circulating raceways as an example, four mainstream forming processes with respective pros & cons are widely available on the market:
High-precision grinding: Excellent dimensional accuracy yet limited by high cost and low efficiency;
Hard whirling milling: High machining efficiency but requires dedicated machines & tools with relatively high investment;
Hard turning: Balances cost-effectiveness and productivity for screw nut with moderate precision requirements;
Cold forging: Suitable for mass production with relatively low machining precision.
Solution Analysis
◎ The workpiece is made of GCr15 hardened to HRC 58–62 featuring high hardness and strict precision. Worldia’s customized PCBN hard turning solution boosts tool service life by 25% versus the original process.
◎ Matching workpiece precision and material characteristics, Worldia selects PNH2018 grade with outstanding wear resistance and superior edge chipping resistance. Custom non-standard cutting edge geometry parameter is optimized for actual cutting conditions to strengthen edge robustness, improve cutting performance and guarantee superior finished surface quality.
◎ Specialized in high-precision humanoid robot component machining, Worldia custom tools help clients extend insert lifespan, raise productivity and cut tool expenditure based on part features and practical production demands. We deliver stable, mature and cost-effective machining solutions amid fierce industrial competition.