phi drive brochure for machine tools and spindles
TRANSCRIPT
www.phidrive.eu
Tel +39 039 62 50 971
PHI DRIVE is an innovated start-up founded in 2013 with active patents and highly innovative products, such as piezoelectric rotary motors. It provides advice and design support in the creation of customized high-precision solutions.
ABOUT US
Legal Office: VIMERCATE (MB), Italy
PHI DRIVE’s creativity and technical skills are rewarded with the "National Award for Innovation", the "Award of Prizes" and "The mark of excellence of the EU H2020 innovation program"
PHI DRIVE ACTIVITIES:
- FEM ANALYSIS
- HIGH PRECISION ACTUATORS
- MECHANICAL DESIGN
Not applicable during the design phase
It does not indicate the changes to be made to the components of the machine tool
It assists in the design phase, indicating the most appropriate choices...
... and changes to make to improve the performance of existing machine tool
I am designing a new machine tool: how can I best dimension the structures, the kinematic chains, the skates, and more?
How can I modify an existing machine tool and improve its performance?
CLIENTS REQUIREMENTS
EXPERIMENTAL MODAL ANALYSIS
MODAL NUMERICAL ANALYSIS
PHI DRIVE FOR MACHINE TOOLS and MECHANISMS
I am designing a new product: how can I best size the various components, the kinematic chains, the skids and the various mechanisms?
How can I modify an existing mechanism and improve its performance?
How can I intervene on the problems related to a mechanism?
CLIENTS REQUIREMENTS
PHI DRIVE FOR KINEMATICS
NUMERICAL FEM ANALYSIS
It assists in the design phase, indicating the most appropriate choices ...
... and changes to make to improve the performance of a mechanism.
PHI DRIVE FOR MACHINE TOOLS and MECHANISMS
MACHINE TOOL COMPONENTS
PHI DRIVE is able to perform detailed and precise
analysis of machine tools.
How?
By modeling all the components that compose it, as
well as the constraints that characterize its
functioning:
- STRUCTURE
- KINEMATIC CHAIN
- SKIDS
- BEARINGS
- BRAKES AND MOTORS
1
XY
Z
ROSA
SEP 4 2017
17:09:03
COMPONENTS
Set 1 of 1
ENE_13 (Elems)
PHI DRIVE FOR MACHINE TOOLS and MECHANISMS
STATIC ANALYSIS
The static analysis allows to have useful information on
the rigidity of the machine tool and its components.
How is the structure deformed under the effect of a
static load?
Is the structure sufficiently rigid?
On which structural elements can I intervene to
improve stiffness?
RESULTS:
DEFORMED STRUCTURE
INDICATION ON WHAT ELEMENTS TO INTERVENE TO
IMPROVE THE PROJECT 200 300 400 500 600 700 800 900 1000-5
0
5
10
15x 10
-3 DEFORMATA STATICA
ENERGETIC AND MODAL ANALYSIS
For every natural vibrating modes all the components
contribute in different measure to the elastic and
kinetic potential energy, depending on their stiffness
and mass, respectively.
But how far? On which components can I act to
improve the efficiency of my machine?
RESULTS:
HOW IT DISTRIBUTES THE TWO SHAPES OF ENERGY,
KINETICS AND ELASTIC POTENTIAL, IN THE VARIOUS
COMPONENTS
IDENTIFICATION OF THE MOST CRITICAL
COMPONENTS
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
1
2
ENERGIA CINETICA
ENERGIA POTENZIALE
1
MN
MX
XY
Z
ROSA
0.002414
.004828.007242
.009657.012071
.014485.016899
.019313.021727
SEP 6 2017
14:03:30
NODAL SOLUTION
STEP=1
SUB =8
FREQ=92.2779
USUM (AVG)
RSYS=0
DMX =.021727
SMX =.021727
PHI DRIVE FOR MACHINE TOOLS and MECHANISMS
Potential Energy
Kinetic Energy
FRFs FROM MODAL EXTRACTION AND DIRECT FRFs
From FRFs the most important natural vibrating
modes are highlighted.
PHI DRIVE is able to calculate FRF (frequency response
function) that also take into account: concentrated
damping (sliding blocks, ball screws, ...) and the one
introduced by the speed loop of the numerical control
What are the most important vibrating mode to
consider?
RESULTS:
MOST IMPORTANT VIBRATING MODES
HOW TO MODIFY A NATURAL FREQUENCY
FRF: it represents the amplitude of the oscillations of the
machine against a sinusoidal forcing at various
frequencies.
PHI DRIVE FOR MACHINE TOOLS and MECHANISMS
101
102
10-6
10-5
10-4
102
10-9
10-8
10-7
10-6
ANALYSIS TECHNIQUES FOR COMPLEX MODELS
Some analysis are unsolvable except on models with
few degrees of freedom.
The FEM model of a machine has many degrees of
freedom.
How to do?
PHI DRIVE has developed the hybrid model, faithful to
the original FEM, but suitable for analysis that could
not be solved otherwise.
1
K0 K0 D0 K0 K0 K0 M0 M0
K0 K0 D0 K0 K0 K0 M0 M0 K0 K0 D0 K0 K0 K0 M0 M0
K0 K0 D0 K0 K0 K0 M0 M0
K0 K0 D0 K0 K0 K0 M0 M0
K0 K0 D0 K0 K0 K0 M0 M0
K0 K0 K0 K0 M0 M0
K0 K0
K0
K0
K0
K0
K0
K0 K0
K0
M0 M0 M0
M0
M0
M0
M0
M0
M0
K0 K0 K0 K0 K0 K0 K0 K0 K0 K0 K0 K0 K0 K0 K0 K0 K0 K0 M0 M0 M0 M0 M0 M0 X Y
Z
ROSA
SEP 6 2017
15:24:03
ELEMENTS
1
K0 K0 D0 K0 K0 K0 M0 M0
K0 K0 D0 K0 K0 K0 M0 M0
K0 K0 D0 K0 K0 K0 M0 M0
K0 K0 D0 K0 K0 K0 M0 M0 K0
K0 K0
K0 K0
K0 K0
K0 K0 K0 M0 M0
K0 K0 K0
K0
K0 K0
M0 M0
M0
M0
K0 K0 K0 K0 K0 K0
K0 K0 K0 K0 K0 K0
XY
Z
ROSA
SEP 6 2017
15:22:33
ELEMENTS
PHI DRIVE FOR MACHINE TOOLS and MECHANISMS
1
K0 K0 D0 K0 K0 K0 M0 M0
K0 K0 D0 K0 K0 K0 M0 M0
K0 K0 D0 K0 K0 K0 M0 M0
K0 K0 D0 K0 K0 K0 M0 M0 K0
K0 K0
K0 K0
K0 K0
K0 K0 K0 M0 M0
K0 K0 K0
K0
K0 K0
M0 M0
M0
M0
K0 K0 K0 K0 K0 K0
K0 K0 K0 K0 K0 K0
XY
Z
ROSA
SEP 6 2017
15:22:33
ELEMENTS
PHI DRIVE FOR MECHANISMS
MODELING COMPONENTS OF A MECHANISM
PHI DRIVE has a strong experience in the analysis
of mechanisms and has developed its own
resolution strategies for the analysis of:
- ROLLER AND / OR BALL BEARINGS
- KINEMATICS CHAIN
- SKIDS
- BRAKES AND MOTORS
- BALL SCREWS
- EXTERNAL SUPPORT NUT (LEAD NUT)
- STRAIGHT GUIDE
1
K0 K0 K0 K0
X
Y
Z
VARIFLEX
JUL 10 2017
11:59:37
ELEMENTS
1
X
Y
Z
ROSA
SEP 6 2017
09:33:56
ELEMENTS
www.phidrive.eu
Tel +39 039 62 50 971