M4serviceManual_e - 第57页
3 Mechanical Section 3-27 NOTE: If too much grease is appl ied, excess grease may scatt er around during machine’s running. Apply proper amount so that thin coat of grease is m ade over the surface. NOTE: If grease is ap…
3 Mechanical Section
3-26
■ Lubrication Points without Grease Nipples
ACTION:
① Select Manual Menu > Origin to return the Head Assy. to the origin.
② Wipe off the dirty grease or adhered grease on ball screw where your hand can reach. Use a nonwoven
cloth to wipe, not a cotton swab or woven cloth that may generate dust or waste threads.
③ Apply new grease onto the ditch of ball screw by finger, and spread it to make a thin coat over the
whole part. Do not put much amount of grease partially.
Apply grease onto the ditch of ball screw.
④ By Axis command in Manual Menu, move the Head Assy. to the positive end limit. Then wipe off
dirty grease and apply new one on the rest of area.
⑤ Perform “Ageing” in Manual > Warm Up with the less than 20% axis speed for more than 10 minutes.
Speed setting can be done by sliding the “Axis Speed” gauge at [Setting] tab.
⑥ Then wipe off the pushed-out dirty grease with a nonwoven cloth and apply new grease onto the ditch
of the ball screw with your finger.
⑦ Remove excessive grease gathered on the nut or both ends of the ball screw with a nonwoven cloth,
and perform “Ageing” by increasing axis speed gradually.
Nut
⑧ By Axis command in Manual Menu, move the Head Assy. from an end of axis to the other end for
several times, so that the applied grease is spread over whole of work range. However, the spread
grease cannot reach the actual end of each axis because of the out of work range of the nut. Then add
some grease there by hand with a nonwoven cloth etc.
3 Mechanical Section
3-27
NOTE: If too much grease is applied, excess grease may scatter around during machine’s running. Apply proper
amount so that thin coat of grease is made over the surface.
NOTE: If grease is applied on the ball screw surface (out of ditch), the grease will be coming out, not being caught
by ball bearing inside. That may cause insufficient lubrication condition. Then Apply grease onto the ditch
of the ball screw.
■ Lubrication Points for Linear Guide
ACTION:
① Wipe off the dirty grease or adhered grease on the linear guide. Use a nonwoven cloth to wipe, not a
cotton swab or woven cloth that may generate dust or waste threads.
② Push the grease gun to the grease nipple and apply grease in the linear guide nut.
Grease Gun
Grease Nipple
Y-axis Linear Guide
③ Perform “Ageing” in Manual > Warm Up with the less than 20% axis speed for more than 10 minutes.
Speed setting can be done by sliding the “Axis Speed” gauge at [Setting] tab.
④ Then wipe off the pushed-out dirty grease with a nonwoven cloth and apply new grease into the nut
again.
⑤ Remove excessive grease gathered on the nut or both ends of the ball screw with a nonwoven cloth,
and perform “Ageing” by increasing axis speed gradually.
⑥ By Axis command in Manual Menu, move the Head Assy. from an end of axis to the other end for
several times, so that the applied grease is spread over whole of the work range. However, the spread
grease cannot reach the actual end of each axis because of the out of work range of the nut. Then add
some grease there by hand with a nonwoven cloth etc.
NOTE: If a cotton-swab or a woven cloth is used to wipe off the dirty grease, waste threads of cloth may be caught
in the ball screw. Use a nonwoven cloth.
NOTE: Use proper grease for lubrication, specified as our standard. (See the “Specified Lubricants” list at the end
of this chapter.)
NOTE: Remove the excess grease gathered on the nut or both ends of the ball screw by wiping it off with a
nonwoven cloth to avoid grease scattering.
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.