Fagor CNC 8055i FL EN - Page 420

·420·
Installation manual
CNC 8055
CNC 8055i
7.
CONCEPTS
SOFT: V02.2X
Compensation of the elastic deformation in the coupling of an axis
resonance frequency (in Hz) associated with the elastic coupling. The procedure to obtain this
frequency will be described later on.
Dynamic factors that affect elastic deformation.
The deformation suffered by an elastic mechanical system subject to a force is given by the formula:
where:
k elastic constant
x amount of deformation
Also knowing that:
where:
m mass of all moving elements
a system acceleration
and replacing its value in the previous formula we get the equation:
Deformation is, therefore, proportional to acceleration:
For a circular path, recommended to be used in the machining tests for adjusting the compensation
of elastic deformation because it is a comfortable geometrical shape for taking measurements,
normal acceleration is given by the formula:
where:
R Radius of the circular path followed by the tool tip. Enter its value in meters (m).
F Feedrate of the tool tip as long as the table is not moving. If the tool and the table are
moving, F will be the relative feedrate between them.. Enter its value in meters per minute
(m/min),
Fuerza k x=
Fuerza m a=
ma k x=
x
m
k
----
a Cte a==
a
F 60
2
R
---------------------
=
Only applicable to
circular paths