Molding dies used for injection molding are usually cut and fabricated from sheets of metal.
Since metal is cut, the larger the mold, the longer it takes.
Therefore, when manufacturing, tools and cutting conditions are considered with cutting process efficiency in mind.
Cutting efficiency is an index that measures, for example, how much metal is cut by a tool per minute.
This is mainly evaluated by the amount of chips discharged.
If the amount of chips discharged per minute is low, the efficiency is low, and if it is high, the efficiency is high.
Chip emissions can be calculated using the following formula
As can be seen from this formula, increasing the tool speed does not affect machining efficiency.
However, simply increasing the feed rate alone will change the feed rate per blade, which may cause breakage. Therefore, the tool speed should be increased at the same time.
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