What Are The Main Steps Of Cnc Machining Scheme Customization

[Gannon Siegal]

CNC machining scheme is an important document to guide manufacturing. It plays a great role in ensuring the machining quality of parts and meeting the requirements specified in the design drawings. At the same time, it can also improve efficiency and reduce cost on the basis of ensuring processing quality
the steps of customizing CNC processing scheme mainly include:

1. Analyze the working drawing of parts and the assembly drawing of products

understand the purpose, performance and working conditions of products, and clarify the position, function and technical requirements of parts in products, which is the basis of CNC processing
after reviewing whether the dimension, view and technical requirements of the product are reasonable, it is necessary to analyze the relationship between the quality, process and technical requirements of the product
3. Determine the type and manufacturing method of the blank

the basis for determining the blank is mainly the role of the part in the product, the structural characteristics and overall dimensions of the part itself, the material and process characteristics of the part and the production batch of the part. The types of blanks often used include castings, forgings, milling operation weldments, stamping parts, profiles and so on
4. Drawing up the CNC processing process route

mainly includes: selecting the positioning benchmark, determining the processing method, arranging the processing sequence and arranging the heat treatment, inspection and other processes
5. Determine the machine tools and process equipment required for each process

process equipment includes fixtures, cutting tools, measuring tools and auxiliary tools. On the premise of ensuring the processing quality of parts, it adapts to the production batch and production beat. It is suggested to give priority to the use of standardized process equipment and make full use of the existing conditions to reduce the production preparation cost. For special machine tools or group equipment that must be refitted or redesigned, the design specification shall be put forward on the basis of economic analysis
6. Determine the machining allowance of each process, calculate the process size and tolerance

7. Determine the cutting amount

principle: ensure the machining accuracy and surface roughness of parts, give full play to the cutting performance of tools, and ensure reasonable tool durability; And give full play to the performance of machine tools, maximize productivity and reduce costs
8. Determine the man hour quota of each process

according to the production conditions of the enterprise, formulate a reasonable level that most employees can reach and approach through efforts.