What three aspects are included in the machining accuracy of parts?
The machining center is a CNC mechanical equipment integrating milling, boring, drilling, tapping and thread cutting, etc., and its external shape is relatively complex. The types of workpieces produced by the machining center are divided into the processing of products and molds. In the process of product parts processing, high precision and high speed are required. The neck includes the following three aspects in the processing of parts.
Machining accuracy refers to the degree of conformity between the actual size, shape and position of the surface of the machined part and the ideal geometric parameters required by the drawing.
1. Dimensional accuracy
Refers to the consistency between the actual size of the processed part and the center of the part’s dimensional tolerance zone.
- Shape accuracy
It refers to the degree of conformity between the actual geometry of the surface of the part being machined and the ideal geometry.
3. Position accuracy
Refers to the actual positional accuracy difference between the relevant surfaces of the machined part.
The actual parameters obtained by the workpiece produced by the machining center will not be absolutely accurate. From the function of the part, as long as the machining error is within the tolerance range required by the part drawing, it is considered that the machining accuracy is guaranteed. In this process, the quality of the machine tool depends on the machining quality of the parts and the assembly quality of the machine. The machining quality of the parts includes the machining accuracy of the parts and the surface quality.
Machining accuracy refers to the degree to which the actual geometric parameters (size, shape and position) of the part after machining are consistent with the ideal geometric parameters. The difference between them is called machining error.