39924 21320-1T-09/18 Printed in Germany ·
12650700-1T 05-2020
2H 10/2021
TEAM CUTTING TOOLS
KOMdrive
Operating Instructions
1. Application
Maximum permissible rpm, stroke, tool weight, tool center point
and pressure for the built-in stops has been set for the different
types and sizes of facing heads. When calculating the necessary
operating force on the drawbar, these need to be taken into
consideration, in addition to the necessary cutting force. Should
the calculation exceed the allowed pressure of the stops, changes
have to be made to the RPM or stroke to a smaller rate, respectively
when the stops are in a precise position in the crossfeed cylinder,
a lowering of the force on the stops is possible. When the facing
heads are used with NC control, the stops do not function; the
maximum cutting force is determined by the loading capacity of the
gear cutting element.
2. Acceptable coolant
When using facing heads with coated slideways, aggressive cool-
ants which have large amounts of sulphur and chlorine cannot be
used.
3. Maintenance
For warranty and liability reasons repairs or overhauling of facing
heads should only be carried out at KOMET. After disassembly all
parts are inspected thoroughly for re-use and if necessary replaced
with new parts. Repaired facing heads leave our assembly prac-
tically as new in the technical sense. Allthough we have a repair
service, it is advisable to purchase a replacement head to avoid
production standstill. As preventative measure we recommend a
regular inspection of the Facing Head at intervals of about 5 000 –
10 000 operating hours.
We also offer maintenance contracts under which we keep spare
parts in stock and guarantee prompt maintenance work.
4. Central lubrication
Here the lubrication is carried out by means of the central lubrica-
tion unit on the machine or via a local lubricating unit. The following
details refer to the various facing head sizes; these must be com-
plied with as part of KOMET‘s warranty and liability undertakings:
• Amount of oil: according to PK-size 0,2 – 1,5 cm³
• Frequency of lubrication: every 5 – 15 minutes
• Necessary pressure: 15 – 20 bar
The pressure at the application point to the facing head must be
maintained for approx. 10 – 20 seconds and set by means of a time
switch. Length and cross section of the lubrication supply pipe have
to be considered.
5. Hand/Nipple lubrication
The facing head has to be lubricated several times per shift and
at the end of each shift. When the machine has been standing
idle for a long time (weekend, vacation), it has to be lubricated at
machine start-up. The amount has to be measured in such a way,
that the lubricant is visibly seen coming out of the slide ways. Apart
from supplying the head with the actual lubricant, expulsion of the
coolant also has to be ensured. The required amount of lubricant
depends on the size of the facing head and the RPM at which the
head runs. The lubrication frequency must be adjusted to these
requirements and, where necessary, comply with the guidelines for
central lubrication.
6. Lubricants
We recommend Mobilux EP004 liquid grease for all speed ranges.
Furthermore, it is also possible to use slideway oils according to
DIN 51502 with the identier CG-L68 or CG-L220 (CG-L220 is pre-
ferred for speeds from 700 rpm).
The relevant commercial names of the mineral oil companies for
slide-way oils can be ascertained from the machine lubrication
instructions.
These lubrication instructions apply to all generating tools supplied
by KOMET.
Descriptions and notes on application conditions for facing heads
shown in the „FEED-OUT TOOLS KOMdrive“ brochure should also be
taken into account, together with those shown in tool layouts and
other publications.
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