The main factors affecting machining accuracy
2026-01-22
Machining accuracy refers to the degree of conformity between the actual geometric parameters (size, shape and position) of a part after processing and the ideal geometric parameters. Generally, the higher the degree of conformity, the higher the machining accuracy. In actual processing, it is impossible to make the part exactly the same as the ideal one, and there will always be deviations of different magnitudes. The degree of deviation of the actual geometric parameters of the part after processing from the ideal geometric parameters is called machining error.
It was only after consulting our senior precision machining expert from Chenju Precision that the editor learned about this issue of accuracy.
The factors that affect the machining accuracy and cause machining errors can be classified into three aspects:
1. Errors existing before processing:
Principle error: Some processing methods inherently contain errors.
(2) Errors inherent in the machine tool, fixtures and cutting tools themselves;
(3) Errors during the adjustment of work, fixtures and cutting tools.
2. Errors caused by physical factors during the cutting process:
Cutting forces and other forces cause deformation of the process system.
(2) Cutting heat and other heat sources cause deformation of the process system.
3. Errors that occur after cutting:
Deformation caused by the redistribution of internal stress in the workpiece;
(2) Measurement errors when measuring workpieces.
The causes of these errors can be summarized as follows:
(1) Processing principle error
(2) Geometric errors of the process system
(3) Errors caused by the deformation of the process system under force
(4) Errors caused by thermal deformation of the process system
(5) Machining errors caused by internal stresses in the workpiece
(6) Measurement Error
Chenju Precision specializes in precision parts processing services, offering 3-axis, 4-axis, and 5-axis CNC machining, turning and milling compound processing, CNC lathe processing, and small-batch parts processing, etc. It excels in handling complex-structured workpieces and can customize dedicated fixtures and jigs for projects. Each product undergoes at least four full inspection procedures, with a quality pass rate of 99.93%. It provides high-quality small-batch processing customization services to customers, with sample production within 3 days and delivery within 7 days.
If there are any subsequent projects requiring mechanical processing, please send the drawings to this email address for evaluation and quotation: info1@us.cjcncmachining.com
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