CNC Styrocut

Transcription

CNC Styrocut

Design Fabrication Workshop / DOA / NUS
IV. CNC Hot Wire Foam Cutting / CNC Styrocut
CNC HOT WIRE FOAM CUTTER
CNC Styrocut
Model:
Size: Material:
Interface:
Input:
Copyright © 2009-2012 NUS
CNC Styrocut
W1200 x D1200 X H900
EPS & XPS Foams
Desk CNC, Mach 3
.dxf, .dnc
INTRODUCTION
CNC Styrocut - 2D
Sample Output
Save Geometry as ‘.dxf’
While importing from
rhino export in ‘.dxf
format as version R12
Lines and Arcs’
The cutting margin in
EPS is between 1 to 2
mm depending on the
material density, the wire
property (resistance) and
current passing through.
Pre-test a sample and
prepare files accordingly
for percision cutting.
2
MACHINE OPERATION AND PROCESS
CNC Styrocut - 2D
1. Switch On the CNC
multitool.
2. Make sure the wire
is horizontally and
vertically aligned using
Mach 3 CNC loader.
2.1 Click - ‘Reset’
2.2 Use Jog tower to
move both towers
together. UPW moves
the CNC in upward
direction and DWN
moves it downward. Use
directional arrows to
move towers individually.
3
CNC Styrocut - 2D
3. Place the material on
the base board with its
vertical surface aligned
parallel to the cutting
wire.
Desk CNC Interface
4.0 File > Open DXF
4.1 View > View All
4
CNC Styrocut - 2D
5. Select > Select All.
The color of the cutting
profile should change to
blue color.
6. Edit DXF > Scale, Move,
Rotate Selected
5
CNC Styrocut - 2D
6.1 Click - ‘Move to Origin’
(The drawing sample is
moved to origin)
The values for Bottom
Left X & Y change to ‘0’.
6.2 Input ‘Scale Factor’
and Click - ‘Scale’.
Scale up or down the dxf
file to required sample
output.
The values for Top Right
X & Y change to final
output size.
6
CNC Styrocut - 2D
6.3. Input cutting in
depth for material
‘Bottom Left X & Y’ and
Click - ‘Move’.
The wire will move into
the material in both X & Y
directions before cutting
the actual profile.
The size of the output
also changes accordingly.
6.4 Click - ‘Cancel’
7
CNC Styrocut - 2D
7.0 View > Zoom All
7.1Select > Select All
7.2 File > Save Geometry
as DXF
Save as a new file ‘XYZ’
8. File > Foam Cutter >
Open Top Left/Larger
DXF Contour
Load dxf file ‘XYZ’ from
saved location.
8
CNC Styrocut - 2D
9. Toolpath > 4 Axis Foam
Cut
Click - ‘Create’
Input Feed rate ‘450’
(Feed rate can vary
between 300 to 500
depending on the
material density)
Click - ‘Cancel’
10. Toolpath > Run
Machine.
Save file in ‘.dnc’
format for cutting in
‘Mach 3 Loader’
9
CNC Styrocut - 2D
11. Click - ‘Load’
Load saved ‘XYZ.dnc’ file
in Mach 3 Loader.
12. Set Origin (0,0)
Click ‘Zero’ tab for ‘X
Horizontal and Y Vertical’
both on ‘Left Tower and
Right Tower.’
The (0,0) point
corresponds to the
bottom ‘Left Edge of the
Material’
10
CNC Styrocut - 2D
13. Switch ‘ON’ the power
supply to heat the wire.
13.1 Manually adjust the
current in the range of
20 - 25 depending on
material density.
13. Click - ‘Start’
The toolpath of the CNC
Hotwire can be checked
on screen, displayed in
the middle.
11
INTRODUCTION
CNC Styrocut - 3D (Conical)
Sample Output
The cutting margin in
EPS is between 1 to 2
mm depending on the
material density, the wire
property (resistance) and
current passing through.
Pre-test a sample and
prepare files accordingly
for percision cutting.
12
1. Switch On the CNC
multitool.
2. Make sure the wire
is horizontally and
vertically aligned using
Mach 3 CNC loader.
2.1 Click - ‘Reset’
2.2 Use Jog tower to
move both towers
together. UPW moves
the CNC in upward
direction and DWN
moves it downward. Use
directional arrows to
move towers individually.
13
INTRODUCTION
3. Calculating Distances
a. dist.1 – should be as
small as possible
b. dist.2 – your material
c. dist.3 – should be as
small as possible, move
the towers together
d. total wire distance
between the two bolts
(spring included)
total wire = dist.1 + dist.2
+ dist.3
3.1 Calculate Cutting
Cycles (Projections)
sideB = 44mm
sideA = 75mm
dist.1 = 140mm
dist.2 = 300mm
dist.3 = 370mm
total wire = 810mm
Projection A = 90mm
Projection B = 5mm
If the cutting wire is too
long, the cutting cycle
of the left tower can
become negative.
14
3.2 Calculate the ‘Scale
Factor’ for Input files
Scale factor for Side A =
90/75 = 1.2
Scale Factor for Side B =
5/44 = 0.1136
3.3 Save two separate
.dxf files
SideA.dxf (Larger Side)
SideB.dxf (Smaller Side)
15
3.4 Place the material
according to the
calculations done above.
You may choose the right
tower with the fixed end
for the shorter cycle.
The spring is on the left
tower.
Desk CNC Interface
4.0 File > Foam Cutter >
open Top/Left/larger DXF
contour (SideA.dxf )
4.1 View > View All
4.2 Select > Select All.
The color of the cutting
profile should change to
blue color.
16
5.0 Edit DXF > Scale,
Move, Rotate Selected
5.1 Click - ‘Move to Origin’
5.2 Input Scale Factor for
Side A = 1.2
Click - ‘Scale’
5.3 Input Cutting
Distance in material
X = 10, Y = 10
Click - ‘Move’
6.0 View > Zoom All
6.1Select > Select All
6.2 File > Save Geometry
as DXF
Save as a new file
‘Projection_SideA.dxf’
17
7. Repeat Steps 4 to 6
(CNC Styrocut - 3D
Conical) and save dxf file
‘Projection_B.dxf’
(Use Scale Factor 0.1136
for Side B Projection)
8.1 File > Foam Cutter
> Open Top/Left/Larger
DXF Contour
Load file ‘Projection_
SideA.dxf’
8.2 File > Foam Cutter >
Open Top/ Right/Bottom
DXF Contour
Load file ‘Projection_
SideB.dxf’
18
9. Toolpath > 4 Axis Foam
Cut
Click - ‘Create’
Input Feed rate ‘450’
(Feed rate can vary
between 300 to 500
depending on the
material density)
10. Toolpath > Run
Machine.
Save file in ‘.dnc’ format as
‘Conic.dnc’ for cutting in
‘Mach 3 Loader’
19
CNC Styrocut - 2D
11. Click - ‘Load’
Load saved ‘Conic.dnc’
file in Mach 3 Loader.
12. Set Origin (0,0)
Click ‘Zero’ tab for ‘X
Horizontal and Y Vertical’
both on ‘Left Tower and
Right Tower.’
The (0,0) point
corresponds to the
Bottom ‘Left Edge of the
Material’
20
CNC Styrocut - 2D
13. Switch ‘ON’ the power
supply to heat the wire.
13.1 Manually adjust the
current in the range of
20 - 25 depending on
material density.
13. Click - ‘Start’
The toolpath of the CNC
Hotwire can be checked
on screen, displayed in
the middle.
21

CNC Styrocut

Transcription

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