Doosan HM 500 Operating instructions

Machine Tools
ATC Troubleshooting
(HM 500/630/800)

1
HM 500/630/800 HM3digitATCE26
◈ ATC Troubleshooting (HM 500/630/800)
If the changer arm is stopped for any reason while changing the tools (M06), you must return the
changer arm to the home position manually.
However, the countermeasures may differ according to the cause of trouble. So please find out the
exact cause before restoring or repairing the machine.
(1) If the changer arm is stuck while trying to pull out a tool from the spindle (in the state of
Tool Unclamp)
In most cases, this happens when the changer arm is stuck in the spindle while trying to pull out
a tool after tool unclamping is performed
, causing to trigger the " 2023 M06 Command Over
Time” alarm.
(2) If the changer arm is stuck in the spindle after changing a tool (in the state of Tool Clamp)
In most cases, this happens when the changer arm gripper is stuck in a tool after the changer
arm changed the tool and performed the tool clamping
, causing to trigger the " 2023 M06
Command Overtime” alarm.
(3) If the changer arm has stopped operation irrelevantly to the spindle
This happens if the machine is emergency stopped or there occurs a power failure while
performing the tool changing.
▶ ATC Recovery
1) If this happens due to the emergency stop or power
failure, take an appropriate measure to solve the
problem and turn power back on before entering
Machine Ready.
2) Select the “JOG” mode on the main OP.
3) Turn the mode selection switch in the ATC manual
OP to
“MANUAL” .
960
970
980
5710
5720
5730
5740
5750
5760
5770
930
940
950
730
740
750
760

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HM 500/630/800 HM3digitATCE26
4) Depending on a specific situation, turn the mode
selection switch in the ATC manual OP to
“TOOL
CHANGE STEP REVERSE” (4-1), (4-3)
or
“TOOL CHANGE STEP FORWARD” (4-2) .
4-1)
If the changer arm is stuck while trying to pull out a tool from the spindle
Turn the mode selection switch on the ATC manual OP to “ TOOL CHANGE STEP
REVERSE”
.
☞ If the machine is in the state of tool unclamping, manually perform the tool clamping
before proceeding.
▪How to confirm the state of tool unclamping: Check if the spindle emits the collet air
(in MDI or Auto mode), or check if the button indicator of Tool Unclamp on the
manual OP turns on.
4-2)
If the changer arm is stuck in the spindle after changing a tool
Turn the mode selection switch on the ATC manual OP to “TOOL CHANGE STEP
FORWARD”
.
4-3)
If the changer arm has stopped operation irrelevantly to the spindle
Turn the mode selection switch on the ATC manual OP to “ TOOL CHANGE STEP
REVERSE”
.
5) Repeat pressing briefly the “START” button on the
ATC manual OP until the main changer arm moves
to the home position where it doesn't move further.
▪In case 4-1) above, the changer arm is stuck in
the spindle for a reason while changing a tool.
Return the changer arm to the home position and
find the cause by performing the tool unclamping
manually.
☞
If the manual tool unclamping does not work at all, gently impact on the tool to remove it
with the hammer. Then, check the tool kick distance, the state of the unclamp cylinder,
collet, and the tapering side of the spindle or tool to find out the cause of trouble and take
a necessary measure.
▪In case 4-2) above, this happens when the gripper of the changer arm is stuck in the tool.
▪In case 4-3) above, this kind of trouble shooting will be made manually while the tools are
inserted in the changer arm. Just in case of a fall of the tool, prepare a shock absorber such
as wood palette under the machine, so that it can protect the machine from a possible fall.
If
the problem persists after following the steps below, use a rubber hammer to impact on the
end of the changer arm so that the gripper can be removed. Then, pull out the changer arm
and return it to the home position. Find out the cause of trouble and take a necessary action.
(check the tool and check also if ATC is aligned properly)

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HM 500/630/800 HM3digitATCE26
① If the spindle is in the process of tool clamping,
manually perform the tool unclamping.
☞ How to confirm the state of tool
unclamping: Check if the spindle emits the
collet air (in MDI or Auto mode), or check if
the
button indicator of Tool Unclamp on the
manual OP turns on.
② Repeat briefly pressing the “START” button
until the tool in the changer arm inserts to the
spindle completely.
☞ An excessive pressing may get the
changer arm off of the spindle, causing a
fall of the tool. So you must stop pressing
the button when the tool is inserted nearly
to the end of the spindle.
③ Press the Tool Clamp button to manually
perform the tool clamping on the spindle.
☞ Ensure that the Unclamp button should be
turned off.
④ Repeat briefly pressing the “START” button until the changer arm reaches the home
position and wouldn't move further.
☞ If the main changer arm doesn't move further even by your pressing the
“START”
button, this indicates that the main changer arm reaches its home position.
Then, the
“2067 Must Be ATC M-Changer Man. 1 Cycle” alarm will be displayed on
the NC screen.
6) Turn the mode selection switch on the ATC manual
OP to
“TOOL CHANGE 1 CYCLE” , and press the
“START” button to perform the tool changing
automatically. Then, the alarm 2067 will be
released and the ATC home position will be
recovered.
☞ If the Tool Change 1 Cycle operation is not
performed, check the “Conditions of Manual
Tool Change 1 Cycle ” below: