M4serviceManual_e.pdf - 第59页
3 Mechanical Section 3-29 ■ Lubrication Po ints for Spline Shaft Spline Shaft: Turning off the servo motor power, each head can be pulled down m anually. Pull down each head until the spline shaft part appears as seen on…
3 Mechanical Section
3-28
■ Lubrication Points for S-axis Ball Screw/Linear guide
Backside of head
S-axis ball screw
S-axis linear guide
NOTE: Greasing on the S-axis ball screw/linear guide should be performed at backside of the machine.
M4a has the backside cover attached, and it should be removed in advance to the job.
Backside cover (M4a)
There are 18 screws fixing on
the backside cover. When
taking out of the backside
cover, follow the procedure
of [NOTE] below.
Setscrew-B
Setscrew-A
NOTE: Because of the structure of the backside cover, it is very dangerous to remove all setscrews from the cover,
causing the cover falling down. Follow the procedure below to take out the backside cover.
① Remain the two setscrews on both ends of upper position (Setscrew-A/B), and remove all the other
setscrews.
② Loosen the setscrew-A/B for 1 turn around. (Remain the setscrews without removing.)
③ Hold the backside cover upward, and pull it carefully to your side to remove it.
* Installation of the backside cover must be carried out in reverse order of removal.
3 Mechanical Section
3-29
■ Lubrication Points for Spline Shaft
Spline Shaft:
Turning off the servo motor
power, each head can be
pulled down manually. Pull
down each head until the
spline shaft part appears as
seen on left, and applying
grease can be easily
performed.
NOTE: For the procedure to turn off the servo motor power, see the iMS Operation Manual, Chapter 7, Servo Off.
NOTE: With each head in down position, do not manually move X /Y/S axis , neither set feeder on the feeder bank
or remove it off because that may cause head collision with other part such as conveyor, feeder, lighting
box of scan camera. When any heads pulled down manually to apply grease, the heads must be up before
starting the other operation, by manually pushing them up to Z axis origin around or performing
Return-to-origin for Z axis with Servo On.
NOTE: If R-axis (Theta axis) is rotated by hand during machine power OFF or Servo OFF condition, the R-axis
origin may shift 180 degrees away after the Origin Initialization. If you rotated R-axis by hand during
lubrication, be sure to check the R-axis orientation after Origin initialization. If the orientation is not correct,
adjust it by following steps. In case of M4e/M4s, this problem would3-27 not occur.
If machine is operated under the R-axis origin with 180 degrees shift, several
problems may occur such as Nozzle broken, abnormal machine stop at Auto
Nozzle Change, and Scan Camera broken (mirror or lighting unit).
Rotating direction of
Nozzle holder
How to adjust R-axis origin position;
1) Under the Servo OFF condition, rotate
the Nozzle holder to right direction for
two turns.
2) Perform “Origin” command, and check
that the R-axis faces to correct orientation.
Nozzle holder
Hole of Origin-sign
How to check R-axis origin position;
After returning R-axis to Origin, check
that the hole of origin-sign on the Nozzle
holder faces to machine front.
That is the correct orientation of R-axis at
origin.
3 Mechanical Section
3-30
■ Applying Grease to Z-axis Ball Screw/ Z-axis linear guide
ACTION:
① Select [Manual] to display [Nozzle Info] window. From this window, return all the nozzles to ANC,
and move the head to the center (X-axis) approximately and to the nearest front side (Y-axis) in JOG
mode.
② Remove the upper head cover . (For the method, refer to “Head Cover Part”.)
③ Turn OFF the main power of the machine.
④ Apply grease to the upper section of Z-axis ball screw of each head. Do not apply an excessive amount
of grease as doing so may cause grease splash. (An appropriate amount that forms a film of oil on the
surface is sufficient.)
Z-axis linear guide
Spline shaft Z-axis ball screw
⑤ To spread the grease over the entire moving area, move the Z-axis by hand. For the Z-axis, each head
must be moved up and down a few times.
⑥ Raise all the heads approximately to the height of the machine origin by hand.
⑦ Attach the upper head cover .