Pulley-and-Timing Belt Assemblies

-
In order to overcome the first two drawbacks of a gear mechanism, a com-
mon solution is to use the pulley-and-timing belt assembly as shown in
Fig. 4.19.In a pulley-and-timing belt assembly, the timing belt is a flex spline
with teeth. The whole timing belt is normally made of soft material (e.g.
rubber). The direct contact of the two pulleys is therefore replaced by the
soft contact between the timing belt and the two pulleys. As a result, the
effect of wear and backslash is not as serious as that of a gear mechanism.
Since the length of the timing belt is selectable, it is easy to alter the
distance between the input shaft and the output shaft. Just as with a gear
mechanism, the speed reduction is equal to the ratio between the numbers
of teeth of the two pulleys. If the number of teeth on the larger pulley is
No and the number of teeth on the smaller pulley is Nt, the ratio of speed
reduction (or the ratio of torque amplification) will be
k - ^
Again, this ratio is not very high (typically less than 100).

Comments

  1. technoFebruary 9, 2012 at 4:39 AM

    grate news for vehicle owners

    ReplyDelete
  2. idiFebruary 26, 2012 at 8:47 PM

    nice info, i like your blog.

    ReplyDelete
  3. Free articleFebruary 27, 2012 at 4:48 AM

    Nice tips. Thanks for sharing. I like you post.

    ReplyDelete
  4. GoogleMarch 9, 2012 at 11:54 AM

    Great information, I agree

    ReplyDelete
  5. Sayed Al-Amin RasulApril 12, 2012 at 2:01 PM

    very informative !!! thanks for sharing !!!

    ReplyDelete
  6. iramApril 26, 2012 at 8:06 PM

    grate news for vehicle owners

    ReplyDelete
  7. lenin monsurMay 20, 2012 at 12:44 PM

    Very helpful for vehicle owners

    ReplyDelete
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  11. ابو محمدOctober 17, 2012 at 8:17 AM

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  12. ابو محمدOctober 17, 2012 at 8:22 AM

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  13. john constantineNovember 9, 2012 at 3:38 AM

    Pulley Assemblies
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    ReplyDelete

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