The accuracy of Precision Turned Parts for machine tools are mainly reflected in the following aspects to ensure the production of high-precision and high-quality parts:
Processing accuracy requirements:
Machine tools need to have extremely high machining accuracy to meet the tolerance requirements of Precision Machined Parts. For example, the machining accuracy of machine tools should be able to reach hundreds of millimeters or even higher to ensure the dimensional and shape accuracy of the parts.
The machining accuracy of Precision Turned Parts is usually very high, which can meet various application scenarios with strict precision requirements. Generally speaking, its dimensional accuracy can reach the micrometer level, and even sub micrometer or nanometer level in some high-end applications. For example, common dimensional accuracy can be controlled between ± 0.005 millimeters and ± 0.01 millimeters. For shape accuracy, such as roundness, cylindricity, etc., it can usually reach 0.001 millimeters to 0.003 millimeters. Position accuracy, such as coaxiality and verticality, can generally be controlled within the range of 0.005 millimeters to 0.01 millimeters.
However, the specific machining accuracy will also be affected by various factors:
Performance and accuracy of machine tools: Advanced CNC lathes with high rigidity bed, high-precision ball screws and linear guides, and precise spindle systems can provide higher machining accuracy. For example, machine tools driven by high-precision linear motors can achieve positioning accuracy at the nanometer level.
Tool selection and wear: Using high-quality, sharp, and wear-resistant tools, and replacing worn tools in a timely manner, can help maintain machining accuracy. For example, using polycrystalline diamond cutting tools or coated hard alloy cutting tools can improve cutting performance and accuracy.
Optimization of machining process parameters: Reasonably setting parameters such as cutting speed, feed rate, and cutting depth can reduce machining errors. For example, using smaller feed rates and cutting depths during precision turning can achieve better surface quality and dimensional accuracy.
The characteristics of materials: The hardness, uniformity, coefficient of thermal expansion, and other characteristics of materials can affect machining accuracy. For example, for some difficult to machine materials, such as titanium alloys, special processing techniques and tools need to be used to ensure accuracy.
Maintenance and upkeep:
In order to ensure the long-term stable operation and machining accuracy of the machine tool, it is necessary to regularly maintain and upkeep the machine tool. This includes routine maintenance tasks such as cleaning, lubrication, and tightening, as well as advanced maintenance tasks such as regularly replacing worn parts and checking machine performance.