Analyze the shape and size of parts, as well as the type, specification, shape, heat treatment status and hardness of raw materials. Using this original information is beneficial to CNC planning.
- Analysis of assembly drawings and parts drawings
The analysis and research of assembly drawings is mainly to familiarize with the performance and purpose, clarify the mutual assembly position and function of parts, understand the basis for the formulation of various technical conditions on the parts drawings, find out the main technical key issues, and lay the foundation for formulating the correct plan. Of course, when conducting process analysis on ordinary parts, it is not necessary to conduct analysis and research on assembly drawings.
- Processability analysis of parts drawings
The analysis and research of parts drawings is mainly to conduct process review of parts, such as checking whether there are errors or omissions in the views, dimensioning, and technical requirements of the design drawings. Especially for parts with poor structural processability, if possible, communication with the designer or modification suggestions should be made. The designer will decide whether to make necessary modifications and improvements.
- Analysis of the integrity and correctness of part drawings
The views of parts should comply with the requirements of national standards, and the positions should be accurately expressed; the relationships between geometric elements (points, lines, and surfaces) (such as tangency, intersection, and parallelism) should be accurate; and the dimension markings should be complete and clear.
- Analysis of technical requirements for part accuracy
The technical requirements for parts mainly include dimensional accuracy, shape accuracy, position accuracy, surface roughness, and heat treatment requirements. These technical requirements should be the limit values that can ensure the performance of the parts. The analysis of part technical requirements is mainly to analyze the rationality and feasibility of these technical requirements, focusing on the analysis of the accuracy and technical requirements of important surfaces and parts, and preparing for the formulation of a reasonable plan.
- Analysis of dimension marking methods
The dimension marking methods of part drawings include local scattered marking method, centralized marking method, and coordinate marking method. For parts on CNC machine tools, the dimensions on the part drawings should be centralized or marked with the same reference as much as possible, provided that the performance can be guaranteed. This not only facilitates CNC programming, but also helps unify the design reference, process reference, and programming origin.
- Structural processability analysis of parts
The structural processability of parts refers to the feasibility and economy of manufacturing the designed parts while meeting the performance requirements. By analyzing the structural characteristics, precision requirements and complexity of the parts, the method and type and specification of the CNC machine tool required for the parts can be determined.
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