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Cooling mechanism of micro-lubrication in machining

Posted by: AutoMotive 2021-10-19 Comments Off on Cooling mechanism of micro-lubrication in machining

The cooling of micro-lubrication machining mainly relies on the fluidity of compressed air to take away heat, and its effect is weaker than that of cutting fluid. Therefore, the chips are required to leave the processed area quickly.To achieve this goal, the following aspects need to be paid attention to:
1. Ensure that the compressed air pressure is stable
The change of compressed air pressure leads to a decrease in the quality of lubrication, and also reduces its auxiliary cooling effect and reduces its role in helping the chips leave the machined surface.Where it is not suitable for purging, the method of auxiliary compressed air chip removal can be used.
2. Reduce the problem of long chips during processing
The shape of the chips is an issue that needs to be paid attention to under the condition of micro-lubrication. It is to achieve short chips and chips and avoid long chips.Specific measures include keeping the cutting edge sharp, researching and adopting an edge shape suitable for chip breaking.In rough machining, a large amount of cutting is used to form thicker short chips, and a high-speed speed is used in finishing, and a small amount of cutting is used to obtain a good surface quality.
Principle: The heat generated by processing will cause the temperature rise of the chips, tools, and workpieces, and the accumulation of chips will aggravate the temperature rise of the tools and workpieces.More than 80% of the heat can be discharged through the short chips, and the chips quickly leave the workpiece. This is a key factor that affects the success of quasi-dry cutting.

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