Written by [google_authorship] on 29th November 2019
exactly what goes into the design of a gearbox will help anyone who needs to
identify the ideal model for their purposes. There is no one-size-fits-all
method and many gearbox manufacturers these days even offer entirely customised
options for unique applications.
Here we will
delve into the gearbox design process and explain the steps that an engineer
must take in order to develop a gearbox design.
Preliminary Gearbox Design Questions
The first step
is identifying the basic framework within which the more detailed elements will
added. Questions a gearbox engineer must ask before commencing the design stage
include the likes of what kind of input speed and horsepower the final build
will be required to sustain. The engineer will also need to know the gearbox’s
target output torque which will help define the gear ratio.
information the designer will need will include what periods of time the
gearbox will be required to remain operational for, as well as how robust it
will need to be to withstand impact shocks and vibrations.
Another issue is
how overhung the load will be and whether or not there will be any internal
overhang loads. Some gear designs cannot facilitate
multiple supports because of the way the shafts intersect, particularly when
this results in load overhang, which can cause misalignment between the gears which
leads to severe wear and tear on the gear’s teeth.
will also have to consider whether or not the machine requires a shaft with
either a hollow-bore input or hollow-bore output. How the gearing is orientated
is important too, as certain designs such as a right-angled worm geared-motor can function with the worm either above
or underneath the wheel. The design process will also have to determine the
housing structure and material to incorporate the orientation of the shafts,
especially as they might protrude vertically or horizontally according to the
preliminary question will usually involve determining whether the gearbox will
require any special coating, such as corrosion-resistant paint.
Service Factor, Class of Service and Mounting
preliminary design aspects have been determined, the gearbox engineer must now
define the service factor and class of service for the gearbox.
factor is directly related to details such as the type of input the gearbox
will receive and the amount of time it should be able to operate for, as well
as its ability to handle shocks and vibrations. A low service factor means the gearbox
will be operated intermittently with low vibrational interference, while a high
service factor will usually be assigned for a gearbox that needs to either run
constantly or withstand significant shocks and vibrations, or both.
The last element
to be incorporated into the design phase is the gearbox mounting, of which
there are multiple options determined according to the intended application.
The likes of lubrication and seals will be identified once the final gearbox
design has been realised, as these elements can be adapted as required.
New Gearboxes Distributors
There are many
excellent manufacturers whose gearboxes and geared-motor units are available
through gearboxes distributor YB
Components. There are also two recent additions to the catalogue, starting with
Supror Gearboxes who have produced a number of high quality planetary and
helical worm gear motors, while RGM Ruhrgetriebe Gearboxes feature a diverse range
of drive options for large and small scale applications.
If you require any Supror
gearboxes or RGM Ruhrgetriebe gearboxes, then contact
who are the UK’s leading gearboxes distributors.