CNC mold machining processes utilize computer-controlled machine tools, offering advantages such as high precision, high efficiency, and high automation. The following details the process using an automotive headlight mold as an example.

Process Flow:

1. Mold Design: Mold design is the first step in mold machining. It requires design based on product shape, size, and material requirements, and the creation of engineering drawings.

2. Numerical Control (NC) Program Writing: Inputting engineering drawings into a computer and writing an NC program to determine machining paths and parameters such as speed, feed rate, and tool shape.

3. Inspecting Machining Equipment and Tools: Ensuring that CNC machine tools, cutting tools, and other machining equipment and tooling are in good condition.

4. Preparing Machining Materials: Selecting appropriate materials and processing them to create components such as the headlight forming pedestal.

5. Rough Machining: Using a CNC machine for rough machining, cutting and shaping the silicon carbide substrate to create the pre-formed shape. Rough machining is faster but less precise, leaving a larger machining allowance.

6. Semi-finishing Machining: Semi-finishing machining focuses on detail and precision, adjusting machine speed and processing to achieve peak accuracy.

7. EDM Machining: Designing the electrode and the EDM process is a crucial step in mold making. Electrode fabrication involves cutting copper foil and bonding it to a silicon wafer to create an electrode pair for electrochemical machining, and then developing the electrode machining plan.

8. Micro-finishing Machining: In the final stage of mold machining, ultra-small tools are used to machine the details of the mold, such as nozzle holes and transverse cuts.

9. Inspection: Inspecting the mold's precision and quality using high-precision three-coordinate measuring equipment to ensure that the machining accuracy meets requirements.

10. Packaging: Finally, using moisture-proof inner packaging boxes for delivery to the production department. The color accuracy and appearance of the finished mold are guaranteed throughout the production process.

The above is the machining process for an automotive headlight mold, and this process is also applicable in CNC mold machining. In this process, machine tools and automated equipment not only improve machining precision and automation but also effectively shorten processing time and improve work efficiency.