Society of Robots - Robot Forum

Mechanics and Construction => Mechanics and Construction => Topic started by: kennykck on December 16, 2007, 10:54:36 PM

Title: Gear reduction for belt
Post by: kennykck on December 16, 2007, 10:54:36 PM
If I'm using belt and pulley, does the gear reduction formula apply in this case too?

Note: one pulley is 5cm diameter (connected to the motor)
         The other is 10 cm diameter (connected to the application)
Title: Re: Gear reduction for belt
Post by: Steve Joblin on December 17, 2007, 06:44:01 AM
Make sure you measure the diameter of where the belt rides, not the outside diameter of the pully that includes the flange.
Title: Re: Gear reduction for belt
Post by: Rebelgium on December 17, 2007, 07:18:32 AM
offcourse it does, only the direction will be different.
Title: Re: Gear reduction for belt
Post by: Admin on December 19, 2007, 05:46:55 PM
Quote
If I'm using belt and pulley, does the gear reduction formula apply in this case too?
What type of belt (v-belt, timing belt, etc)?

Are there high dynamic loads?

I ask because unlike gears, you may need to account for slip.

kennykck, I noticed a lot of gear related questions from you. Building something interesting? :P
Title: Re: Gear reduction for belt
Post by: kennykck on December 20, 2007, 02:54:46 AM
What type of belt (v-belt, timing belt, etc)?
Are there high dynamic loads?
I ask because unlike gears, you may need to account for slip.

kennykck, I noticed a lot of gear related questions from you. Building something interesting? :P

I'm using timing belt. High dynamic load? not sure bout that. So account the slip with how many percent?

So... I gets ur attention. ;D I'm doing this stuff
http://www.societyofrobots.com/robotforum/index.php?topic=2452.0

Lost most of my social life and gaming to it  :'(
Title: Re: Gear reduction for belt
Post by: Admin on December 20, 2007, 06:05:55 AM
Timing belts won't have slip, so don't worry about that.

However belts stretch, such as if you have a high load, or high dynamic load (high acceleration).

If you are building a robot arm with this, it will reduce the positional accuracy a bit.