Chapter 7 Troubleshooting; Troubleshooting (Engraving); The Cutting-In Depth Is Not Uniform (When Using The Nose Unit); The Cutting-In Depth Is Not Uniform (When Not Using The Nose Unit) - Roland EGX-350 User Manual

7-1 Troubleshooting (Engraving)

The cutting-in depth is not uniform (when using the nose unit).

Try revising the cutting parameters as described below.
 Is automatic Z control set to"ON" with the lock lever at position
or ?
 P. 82, "The Position of the Lock Lever, " p. 85, "Submenus"
 Is the cutter holder, the cutter-holder mounting screw, or the
collet loose?
 P. 56, "Cutter Installation Method 1"
 Is the X- and Y-axis feed rate too fast for the workpiece, or is the
speed of spindle rotation too slow for it?
 P. 48, "Adjusting the Spindle Speed, " p. 77, "Adjusting the Cutter Feed
Rate During Engraving (Override)"
 Is the cutter worn? Try replacing the cutter.
 When the cutting-in depth is extremely shallow, the effects of
cutting waste can become large. Try using a cutter with a narrow
blade width, along with increasing the cutting-in depth. Alterna-
tively, use the vacuum adapter for chip cleaning.
 P. 56, "Cutter Installation Method 1," p. 80,"Attaching the Vacuum
Adapter for Chip Cleaning"

The cutting-in depth is not uniform (when not using the nose unit).

Try revising the cutting parameters as described below.
 If possible, perform engraving while using the nose unit.
 P. 56, "Cutter Installation Method 1"
 Is the surface of the workpiece level? Revise the mounting method
and other such factors to mount the workpiece so that its surface
is level. Also, if the flatness or levelness of the workpiece table is
an issue, carry out surface leveling for the workpiece table.
 P. 83, "Surface Leveling of the Workpiece Table"
 Is automatic Z control set to "ON" with the lock lever at position
?
 P. 62, "Cutter Installation Method 2, " p. 82, "The Position of the Lock
Lever"
 Is the cutter holder, tool retaining screw, or collet loose?
 P. 62, "Cutter Installation Method 2"
100

Chapter 7 Troubleshooting

The cutter leaves tracks at places where cutting-in starts or where lines change direction.

Try revising the cutting parameters as described below.
 The spindle rotating speed is too slow with respect to the feed
rate. Try reducing the spindle speed.
 P. 48, "Adjusting the Spindle Speed"
 Is the cutter worn? Try replacing the cutter.

An engraved bottom surface is rough or burring remains.

Try revising the cutting parameters as described below.
 The spindle rotating speed is too slow with respect to the feed
rate. Try increasing the spindle speed or making the feed rate
slower.
 P. 48, "Adjusting the Spindle Speed, " p. 77, "Adjusting the Cutter Feed
Rate During Engraving (Override)"
 Refasten the workpiece securely so that it does not come loose
or slip.
 P. 54, "Mounting a Workpiece"
 Try performing cutting a second time to finish the bottom surface
and remove any burring. Making the cutting-in depth about
0.02 to 0.05 mm deeper for the second pass may yield better
results.
 Is the cutter worn? Try replacing the cutter.
 Check to make sure the cutter diameter matches the collet
diameter.

Engraved lines are uneven or wavy.

Try revising the cutting parameters as described below.
 The cutter holder, tool retaining screw, or collet is loose, and the
cutter is out of control. Tighten securely.
 P. 56 through 74, "Cutter Installation Method 1" through "Cutter Instal-
lation Method 4"
 Refasten the workpiece securely so that it does not come loose
or slip.
 P. 54, "Mounting a Workpiece"
 Check to make sure the cutter diameter matches the collet
diameter.