Tormach 1300PL, Руководство оператора

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6.1 SELECTING A METHOD FOR INITIAL HEIGHT
SENSING (IHS)
Because plasma cutting workpieces are prone to heat-induced
warping, it is common practice to probe the workpiece height
before each cut using the IHS system. This guarantees a
consistent pierce height, which prolongs consumable life.
The 1300PL has two methods of detecting the Z location of the
workpiece before a cut. Choose which method to use based on
your workpiece, cutting situation, and machine setup.
The first and simplest IHS method is the physical touch off
switch in the torch lifter. A spring-loaded switch on the Z lead
screw is triggered when the torch is pressed against the
workpiece.
Use the physical touch switch when:
l
Your workpiece is thicker than 18 ga (1.2 mm).
l
Making many small cuts, where water is splashed into
the torch head between cuts.
The second and more accurate method of IHS is ohmic probing.
Ohmic probing uses the conductivity of the workpiece to detect
when the torch cap is touching it. Ohmic probing requires a
very light touch and is very accurate, but can be triggered in
error by water splashing into the torch head.
Use ohmic probing when:
l
Your workpiece is thinner than 18 ga (1.2 mm).
l
Cutting large workpieces, where the torch is not crossing
over open water between cuts.
To select an IHS method, select or clear the Enable Ohmic
Touchoff checkbox on the Settings tab of PathPilot. For more
information, see "Plasma Settings Reference" (page 48).
6.2 MAKING YOUR FIRST CUTS
Once you have verified all subsystems of the machine and
plasma source, it is a good idea to make a simple test program
to test the cutting and torch height control systems. This also
serves as a good quick-start on NC programming for the
1300PL.
6.2.1 Test G-Code
The following code will probe, set feeds from the AutoFS
system and then cut a 4" line from (0, 0) to (0, 4).
Open a text editor on your computer such as +and
save the following code in a file named
test.nc
.
G90 (Absolute Distance Mode)
G64 P 0.0050 Q 0.0050 (PathBlending)
G17 (XY Plane)
G54 (Set Work Offset)
T 1 M6 G43 H 1
G30 (Move Home)
G0 X0 Y0
M200 (AutoFS)
G15 (probe)
G16 (pierce)
G1 X0 Y4
M205 (Torch Off)
G30 (Move Home)
6.2.2 Code Breakdown
Preamble: This code block resets the modal state of the
machine. It places the interpreter in absolute distance mode,
sets reasonable values for smoothing, and selects the G54
work offset. More detail on these G-Codes can be found in the
full PathPilot manual.
G90 (Absolute Distance Mode)
G64 P 0.0050 Q 0.0050 (PathBlending)
G17 (XY Plane)
G54 (Set Work Offset)
Tool Selection: Selects Tool 1 from the offsets table. On the
plasma, convention is to use Tool 1 for the plasma torch.
T 1 M6 G43 H 1
Initial Move: Moves the torch to the home (
G30
) position in Z
for safety and then performs a rapid move to coordinate (0, 0).
G30 (Move Home)
G0 X0 Y0
AutoFS: Uses the AutoFS material selector on the Main screen
of PathPilot to set feed rate, pierce delay, pierce height and
plasma amperage. No explicit feedrate needs to be specified
for G1 moves since AutoFS sets this for you.
M200 (AutoFS)
Probe and Pierce: Probe the material surface using ohmic
sensing. Once the torch detects the surface,
Z0
for the current
Work Coordinate System is set at the surface. After probing,
G16
moves the torch to the pierce height set by AutoFS, fires
©Tormach® 2020
Specifications subject to change without notice. Page 52 UM10720: 1300PL Operator's Manual (Version 0820B)
For the most recent version, see tormach.com/support
6: BASIC OPERATIONS