Reasons why thrust force, temperature and surface roughness increase with feed rate in Machining?
Increasing feed increases the MRR. Higher MRR means higher volume to cut, this high volume leads to higher friction because of higher contact area between cutting tool face and the workpiece. Higher friction leads higher temprature, also this temprature may cause less sharper cutting tool so this cause poor surface roughness. Also same thing for the thrust force component.
When you increase the feed rate, mrr increase. For constant specific energy consumption, increase in mrr is compensated by increase in heat generation which increases temperature.
Increasing feed increases the MRR. Higher MRR means higher volume to cut, this high volume leads to higher friction because of higher contact area between cutting tool face and the workpiece. Higher friction leads higher temprature, also this temprature may cause less sharper cutting tool so this cause poor surface roughness. Also same thing for the thrust force component.
In my knowledge
increasing the increasing the feed rate will cause more frictional forces resisting the motion of the tool, which results in higher temperature and rougher produced surface.
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