Metric to Imperial Conversion Gears or Imperial to Metric Gears cutting threads on Engineers Lathes
Evan Lewis
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Metric to Imperial Conversion Gears or Imperial to Metric Gears cutting threads on Engineers Lathes
5 509 просмотров · 2 г. назад
Evan Lewis
2,46 тыс. подписчиков
5 509 просмотров · 2 г. назад
This is a comprehensive review of pairs of compound gears that can be used to cut a full range of metric threads on an imperial lathe or imperial threads on a metric lathe with greater precision. It includes a new equation to determine various gear ratios that can be used for these transposing gears. The secret is in making a metric lead screw behave like an imperial lead screw or vice versa. It is a concept that is not widely understood, but the application of engineering mathematics is fascinating and can benefit engineers and hobbyists alike by reducing the problem to a very simple equation and table.
Once the equation or table has been used to determine the required gear ratio, the free online program for gear train calculations can be used to list all the pairs of gears that can be used to reproduce the required gear ratios . See RideTheGearTrain.com and click the metric-imperial conversion button in the menu. This program can also provide gear trains to produce specific threads of any pitch or TPI without using transposing gears at all.
For those who need help calculating the gear ratio of a gear train, see the recently produced companion YouTube video Understanding Gear Trains.
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