What is the difference between precision parts machining and CNC machining?

Precision parts machining and CNC machining are two related but somewhat different concepts.

Precision parts machining refers to the high-precision, high-quality machining process of parts. This involves using various specialized mechanical equipment, tools, and techniques, through methods such as cutting, grinding, drilling, milling, and turning, to produce parts that meet specified dimensional, shape, and surface requirements. Precision parts machining typically requires highly skilled operators and high-precision measuring tools to ensure machining accuracy and quality.

CNC machining (numerical control machining) is an automated machining technology that uses a computer numerical control system to control machine tools for machining. Through pre-programmed machining programs and control instructions, CNC machining can automatically control parameters such as the movement trajectory of the machine tool and the feed rate of the tool, achieving highly accurate and repeatable machining operations. CNC machining typically uses CNC machine tools, including milling machines, lathes, and drilling machines.

The differences are:

1. Scope: Precision parts machining is a broader concept that can encompass various manual and mechanical precision machining methods, while CNC machining is a specific automated machining technology.

2. Level of Automation: CNC machining utilizes a computer numerical control system for automated control, achieving a higher degree of automation and precision. However, precision parts machining may involve more manual operation and adjustment.

3. Machining Methods: Precision parts machining can encompass various machining methods and processes, while CNC machining primarily refers to machining operations performed using CNC machine tools.

It's important to note that CNC machining can be one method of precision parts machining, using computer numerical control systems and CNC machine tools to achieve high-precision machining of precision parts. Therefore, the two are not entirely mutually exclusive but have some overlap and intersection.