eliassonjonas
Mechanical
- Mar 23, 2011
- 3
Hello! we are contemplating a new gearing design for one of our products, and are looking to use a planetary gear- but we are kind of blank with regards to where we can find a good producer (high volume low price) and potentially a standard product.
It is a fixed gear 6:1 palnetary transmission. attached is a crude sketch of the mechanism.
The drive sprocket (1) is driven by a chain, and is transferring force to the planetary gear. the Planetary gear (3) is a fixed gear ratio mechansim, with a gearing rate of 6:1- one revolution in (from the drive sprocket(1)) gives 6 revolutions out on the driving axle (2). we can use gearing ratio of up to 8:1 if there is a good reason for doing so.
the driving axle (2) is going through the panetary gear mechanism, and is layered on both sides of the planetary gear in ballbearings (4)
the output torque is normally 10-30Nm, it is a man driven mechanism driven by a lever, so the usage is irregular with shifting forces. since it is coupled to a lever, it wil be activated from 40-100 times a minute with a input motion (on the drive sprocket) of 1/2 to 3/4 of a revolutions per activation.
Other specifications
max width- 45mm,
max. diameter (height) 110 mm,
max. weight 400 g
lifetime w/o service- +3000h
efficiency- +95%
drive axle diameter 10-12 mm
lower weight and size and cos as well as higher strenght/ efficiency is better
lower weight and cost is more important than smalle size
would be VERY thankful for help and or leads
/jonas
It is a fixed gear 6:1 palnetary transmission. attached is a crude sketch of the mechanism.
The drive sprocket (1) is driven by a chain, and is transferring force to the planetary gear. the Planetary gear (3) is a fixed gear ratio mechansim, with a gearing rate of 6:1- one revolution in (from the drive sprocket(1)) gives 6 revolutions out on the driving axle (2). we can use gearing ratio of up to 8:1 if there is a good reason for doing so.
the driving axle (2) is going through the panetary gear mechanism, and is layered on both sides of the planetary gear in ballbearings (4)
the output torque is normally 10-30Nm, it is a man driven mechanism driven by a lever, so the usage is irregular with shifting forces. since it is coupled to a lever, it wil be activated from 40-100 times a minute with a input motion (on the drive sprocket) of 1/2 to 3/4 of a revolutions per activation.
Other specifications
max width- 45mm,
max. diameter (height) 110 mm,
max. weight 400 g
lifetime w/o service- +3000h
efficiency- +95%
drive axle diameter 10-12 mm
lower weight and size and cos as well as higher strenght/ efficiency is better
lower weight and cost is more important than smalle size
would be VERY thankful for help and or leads
/jonas
