UNACCEPTABLE CHIP CONTROL
Description and cause:
A suitable shape of chip is an important criterion, such
as durability (tool life). Work piece material, feed, depth
of cut, suitable cutting geometry (chip breaker) effect on
the right chip forming. Long chip is unacceptable however
too short chip (crushed) is unwanted, is indicative of
overloaded edge and causes vibrations.
- change feed and depth of cut
- use more suitable cutting geometry
- change cutting conditions
Check of cutting insert seat condition:
Before clamping of new cutting insert or change of edge (rotation of cutting
insert) is necessary to purge the seat, check its condition or condition of an-
vil and wedge (especially the damage under the corner of cutting insert).
Check of tightening:
At tightening check the fitting of cutting insert on the whole binding surface
and fitting in radial and axial direction. Cutting inserts and tools must be
always clean and undamaged.
Check and maintenance of clamping parts:
The checking of clamping parts – clamping levers, screws, wedges, clamps.
Use only undamaged parts, use the original parts only – you find them in
the catalogue. Regularly lubricate the threads and binding surface of scre-
ws, for example by heat-resistant lubricant (Molyko G). For mounting and
disassembling, use only screw drivers and wrenches as per our catalogue
or recommended by the tool producer. Pay attention to the right tightening
(proportional), we recommend to use torque wrench.
undesirable phenomena / general principles / screw torques
recommended screw torques