Smooth ARC
Stepped ARC
AUTO XZ
.
.
.
AUTO XZ
.
.
.
AUTO XZ
.
.
.
Check ABS position whilst performing Inclined Machining (ALL DRO)
If at any time whilst in the Inclined Machining function you would like to check the standard ABS position, relative to
the workpiece datum this can be done using the key. The function remains active in the background. Once you
have checked the positions re-enter the Inclined machining function mode by again pressing the key.
Machining a Radius
The
EM250
has two functions for machining a radius or arc. These are:
●
Simple Radius (R-Function)
The R-Function will allow for the machining of any one of the eight standard arcs that are most common. This
as the name suggests is the simplest method but is limited to simple 90
o
arcs. There is no need for any user
calculations and it is simple to operate.
●
Auto Radius (ARC-Function)
The ARC-Function is a more powerful mechanism allowing for a broad range of arcs to be defined. To achieve
this more parameters need to be entered for which the operator may need to do some calculations.
Setting the Z-Step Method
The
EM250
allows for two methods of operation for controlling the finish of the ARC being machined and this is
controlled by the key.
If we consider the XZ plane then, as we move around an ARC the rate of change in Z increases for a consistent
change in Z. Thus in order to get a smooth finish the DRO can automatically compensate for this. However, this can
require many, many small movements to produce the required ARC. This is known as the Smooth ARC. Alternatively,
if we keep the step size constant then the arc can become more stepped, especially on smaller arcs. This is the
Stepped ARC. The mechanism to control which mode is employed is controlled by the key.
How to Toggle between Smooth ARC and Stepped ARC.
MAX. MD
.
.
.
STEP MD
.
.
.
MAX. MD = Smooth ARC
STEP MD = Smooth ARC
The Message window will
briefly flash the current
mode before returning to
normal display mode.
Ensure the required mode
is selected
BEFORE
using
an ARC function.
Before attempting to machine a workpiece on an actual job it is highly
recommended to practice on a scrap part to get the ‘feel’ of the process.
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Summary of Contents for EM250 Series
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