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MACHINE FINISHES TO METALS |
V.Ryan © 2018 |
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THE LATHE - TYPICAL MACHINE FINISH
Lathe tools produce a machined finish. They can be shaped to produce a range of different machined finishes - two are shown below. A machined finish can be attractive and also have a practical function, such as a grip.
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THE MILLING MACHINE - TYPICAL FINISHES
Milling machines can be used in conjunction with a variety of cutting tools. Often the tools produce a very accurate, distinctive and fine circular pattern.
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THE SURFACE GRINDER - FINISHES
A surface grinding machine is used to accurately produce a flat surface, after some machining has already taken place (for example, through the use of a vertical miller). A surface grinder is used where absolute precision is required.
As the grinding wheel revolves at high speed, it produces a smooth, flat surface, giving a distinct finish (samples shown below). If real precision is required, a surface grinder is used.
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QUESTIONS |
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1. Describe two reasons for a machined finish being applied to metals? 4 marks |
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2. What type of work is carried out by a surface grinder? 4 marks |
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