الفهرس 
Theoretical BackgroundOnly 14 pages are availabe for public view
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Abstract
With the improvement of machining accuracy In recent years, the
problems associated with the errors of machine tools become very
important for researchers. Especially, the way to compensate the
volumetric error of the machine tool.
To enhance a machine’s ability for a precision machining, an efficient
error compensation method that takes the major sources of errors into
account is needed. Each error source is studied carefully to know its effect
on the volumetric error of the machine. A good machine design leads to
minimize the volumetric error as much as possible.
The present work introduces an error model for a three axis C C
machining center, taking into consideration the geometrical errors that may
occur between all machine parts. A mathematical model based on
homogenous transformation translational and rotational matrices has been
applied on three axis CNC machines. The volumetric error was determined
using three types of errors; positional (linear), rotational and squareness. A
detailed model will be covered here and results are presented. The present
work also introduces a software capable of computing the machine
volumetric error in the three axes and modifying the machine program
with these error values.
Results show the greatest effect for each error type; positional (linear),
rotational and squareness error. Hence, these three errors should take more With the improvement of machining accuracy In recent years, the
problems associated with the errors of machine tools become very
important for researchers. Especially, the way to compensate the
volumetric error of the machine tool.
To enhance a machine’s ability for a precision machining, an efficient
error compensation method that takes the major sources of errors into
account is needed. Each error source is studied carefully to know its effect
on the volumetric error of the machine. A good machine design leads to
minimize the volumetric error as much as possible.
The present work introduces an error model for a three axis C C
machining center, taking into consideration the geometrical errors that may
occur between all machine parts. A mathematical model based on
homogenous transformation translational and rotational matrices has been
applied on three axis CNC machines. The volumetric error was determined
using three types of errors; positional (linear), rotational and squareness. A
detailed model will be covered here and results are presented. The present
work also introduces a software capable of computing the machine
volumetric error in the three axes and modifying the machine program
with these error values.
Results show the greatest effect for each error type; positional (linear),
rotational and squareness error. Hence, these three errors should take more