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From coarse to fine: control and optimization practice of roughness in turning milling composite machining
Release time:
2025-02-25
In actual machining, appropriate machining parameters and tool types should be selected based on the specific requirements and machining conditions of the workpiece. Regularly maintain and upkeep the machine tool to ensure its accuracy and stability.
The roughness range that can be achieved by turning milling composite machining is relatively wide, and the specific values are affected by various factors, including machining parameters (such as cutting speed, feed rate, cutting depth), tool type and state, workpiece material, and the accuracy of the machine tool itself. The following is a rough overview of the roughness of turning milling composite machining:
Roughness range:
In the rough machining stage, due to the main pursuit of machining efficiency, the roughness is relatively high, usually in the range of Ra10~Ra20 μ m or coarser.
In the semi precision machining stage, the roughness will be reduced to a range of Ra6.3~Ra10 μ m.
In the precision machining stage, by optimizing machining parameters and selecting high-quality cutting tools, turning milling composite machining can achieve very low roughness values, usually below Ra1.6 μ m, and even achieve ultra precision machining levels of Ra0.4~Ra0.1 μ m, but this usually requires high-precision machine beds and fine process control.
Influencing factors:
Cutting parameters: Cutting speed, feed rate, and cutting depth are key factors affecting roughness. Generally speaking, higher cutting speeds, smaller feed rates, and cutting depths are beneficial for achieving lower roughness.
Tool type and state: The material, geometric shape, cutting edge quality, and wear state of the tool all have an impact on the machining roughness. High quality cutting tools and sharp edges typically produce better surface quality.
Workpiece material: The physical properties such as hardness, plasticity, and thermal conductivity of the workpiece material also affect the machining roughness. For example, materials with higher hardness may experience smaller plastic deformation during processing, which is beneficial for obtaining lower roughness.
Machine tool accuracy: The accuracy and stability of machine tools have a significant impact on machining roughness. High precision machine tools can provide a more stable machining environment, which is beneficial for obtaining lower roughness values.
matters needing attention:
In actual machining, appropriate machining parameters and tool types should be selected based on the specific requirements and machining conditions of the workpiece.
Regularly maintain and upkeep the machine tool to ensure its accuracy and stability.
Regularly inspect and replace cutting tools to avoid using excessively worn tools for machining.
The roughness range that can be achieved by turning milling composite machining depends on the combined effect of multiple factors. In practical applications, the optimal processing parameters and process plan should be determined based on specific requirements and processing conditions to achieve the desired processing quality and efficiency.
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