1. Machine manufacturing error
The manufacturing error of the machine tool mainly includes the spindle rotation error, the guide rail error and the transmission chain error.
The spindle rotation error refers to the variation of the actual rotation axis of the spindle at each moment relative to its average rotation axis, which will directly affect the accuracy of the workpiece being machined. Selecting the quality machine tool accessories to look for Titanium machinery, the main reasons for the spindle rotation error are the coaxiality error of the spindle, the error of the bearing itself, the coaxiality error between the bearings, and the spindle winding.
2. Selection of cutting oil
The performance of the cutting oil used in CNC machining directly determines the accuracy of the workpiece. The cutting oil with excellent performance can provide effective protection to the workpiece and tool from physical lubrication to chemical lubrication, reducing tool wear and greatly improving. Workpiece machining accuracy. Whether the performance of the cutting oil meets the needs of the process directly determines the error accuracy of the workpiece. For example, the use of non-special oils such as rapeseed oil, mechanical oil, and reclaimed oil as cutting oil can cause rapid tool wear, workpiece scratches and burrs, and machine The yellow robes on the table are rusty and so on.
3. Influence of cutting elements on surface roughness
Knowing that the workpiece material is hard, the surface roughness of the workpiece is better after processing. In addition, when the plasticity and ductility of the workpiece material is higher (such as copper and aluminum), the sharper the tool is needed to process the better surface roughness. degree. Compared with the processing of steel parts, the processing of gray cast iron requires a high hardness of the tool because of its complex composition and high impurity content. Some alloys with higher ductility and higher strength require sharp but strong strength tools, so they are more difficult to machine (such as stainless steel, nickel-based heat-resistant alloys, titanium alloys, etc.)
