Production Processes Questions

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Jbys787

Engineering

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For chapter 19, please answer the following questions by composing a Word document using APA format. Your response must be a minimum of 200 words per question.

1) When would upmilling be preferred to downmilling?

2) What type of grinding wheel would be best for use on cut-off saws that are used to cut metal? Why?

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Running Head: PRODUCTION PROCESSES

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Production Processes
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PRODUCTION PROCESSES

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1) When would up milling be preferred to down milling?
To achieve a successful milling process, the contact between the cutting tool and the material
have to proper. The entry and exit of the tool have to be put into consideration. For up milling,
the direction of feed is opposite to the direction of tool rotation (Bawa, 2004). This means that
the cutting tool moves against the feed. During the up milling process the size of the chip
increases from zero to maximum. This process generates a lot of het due to the massive friction
between the workpiece and the cutter. This method is safe because it does not drag the workpiece
into the cutting tool. There is more abrasion and excessive wear on the cutting tool for up
milling. Down milling is when the cutting tool rotates in the same direction as the feed (Bawa,
2004). The chip thickness begins at a maximum and then decreases. This process generates less
friction and therefore minimal heat is generated. Up milling is preferred when performing
milling operati...


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