What Role Does CNC Machining Play in Creating Complex Valve Features?​

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While forging and grinding define the core shape of the valve, Computer Numerical Control (CNC) machining is essential for creating its intricate and precise features. The most common and critical of these is the machining of the groove or grooves for the valve keeper (or collet). This small undercut must be machined to extremely tight tolerances to securely lock the valve in place with the spring retainer. A poorly machined groove can lead to valve failure, a catastrophic event in an engine.

CNC lathes and milling machines are also used for other operations, such as drilling the hollow cavity for sodium filling in high-performance exhaust valves, machining the tip of the stem where it contacts the rocker arm or cam follower, and creating unique features for niche applications. The flexibility of CNC programming allows for quick changeovers between different valve designs, making it ideal for production lines that manufacture a family of valves. Our CNC solutions for valve manufacturing are designed for ultra-high precision and reliability, incorporating automatic tool changers and probing systems to ensure consistent quality across long production runs.