How are high-precision CNC machined parts manufactured?

When a machining factory performs high-precision CNC machining, it must not only meet the technical requirements of the customer’s workpiece and ensure the required performance but also focus on improving production efficiency and worker productivity. This approach provides customers with more economical and long-lasting service.

1. Review Customer Drawings and Select Appropriate Machine Tools

Upon receiving the customer’s drawing and machining requirements, it’s necessary to select the appropriate CNC machine before starting precision CNC machining and write several sets of CNC machining programs. The machining process, especially for parts with high-quality appearance requirements, is generally divided into rough machining, semi-finish machining, and finish machining. This division ensures the quality of CNC machining, facilitates the scientific application of equipment, the arrangement of heat treatment processes, and the detection of blank defects.

2. Customize a Reasonable CNC Machining Plan

Develop a suitable precision parts CNC machining plan. Analyze the drawings of the parts to be CNC machined and use the appropriate CNC machining processes.
High-speed Precision Parts CNC Machining Process:
– Product Analysis: Product analysis should provide certain component information and some specific CNC machining requirements.
– Process Planning: Based on the prior analysis of the workpiece’s appearance and machining requirements, reasonably develop each machining step from an overall perspective.
– Path Generation: Path generation is the process of implementing process planning through software, optimizing the tool path through parameter settings.
– Path Simulation: After path generation, use path simulation to check for potential issues, reducing the actual machining scrap rate. Focus on the workpiece’s appearance and whether there is over-cutting or under-cutting, and check if the process planning of the path is reasonable.
– Path Output: Path output is a necessary step to realize software design and programming on the machine tool. It establishes a connection between the two using an intermediate reference. This can be understood as the post-processing of the tool path for those with a CNC machining background.

3. Determine the Process Programming

In high-precision parts CNC machining, the writing and design of the process flow are crucial. The process steps, reference selection, CNC machining tools selection, fixtures choice and installation, CNC machining strategies, and CNC machining process parameters determination all impact the product quality.

4. Check Product Quality

Finally, in high-precision parts CNC machining, ensure a full inspection of product quality before shipment. For parts that do not meet the drawing specifications, conduct secondary machining to meet the drawing’s size, precision, tolerance, and technical parameters requirements.


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