Spark Plug Ground Electrode Machining

The patent replaces the laser welding process with a mechanical machining process. The ground electrode is formed by machining the shell body using a milling machine or similar mechanical device, eliminating the need for laser welding equipment and post-weld grinding operations. This substitution maintains electrode formation precision while significantly reducing device complexity and manufacturing cost.

The patent replaces expensive laser welding equipment and post-weld grinding operations with conventional mechanical machining processes. The ground electrode is formed directly by machining the shell body, which uses standard milling machines already present in most manufacturing facilities. This eliminates the need for specialized laser welding equipment and reduces manufacturing costs while maintaining electrode formation precision.

The patent uses mechanical machining processes (milling, turning, or other conventional machining operations) to form the ground electrode by removing material from the shell body. These are standard manufacturing processes with well-established precision capabilities. The machining process directly creates the ground electrode geometry without requiring intermediate welding steps, maintaining precision while simplifying the overall manufacturing process.

The patent creates the ground electrode by machining the shell body, which allows for direct variation of geometric parameters such as electrode shape, size, and position. The machining process can easily accommodate different spark gap configurations by changing machining parameters (cutting paths, depths, patterns) without requiring different welding procedures or electrode wire types. This provides high adaptability for varied spark gap designs.