VHF K4 Mode D'emploi D'origine page 31

My machine does not execute any jobs although
a
DentalCNC displays that there is a connection be-
tween the CAM computer and the machine.
Ø
Is the working chamber door open? The machine
does not move the axes if the working chamber door
is open.
M Close the working chamber door.
Chapter 3.2, page 8

The machining results are not satisfactory and / or
a
tools keep breaking.
Ø
Do the tool positions in DentalCNC correspond to the
tools in the tool magazine of the machine? If not, the
machine uses the wrong tools during job execution.
S1. Call up the job execution view in DentalCNC.
S2. Compare the tool positions in the application to the
tools in the tool magazine.
M3. Replace the wrong tools in the tool magazine with the
correct ones.
Chapter 5.3, page 18

Ø
Is the blank attached properly?
M Ensure that all screws, pins and clamping mechanisms
fixate the blank firmly.
Chapter 5.4, page 20

Ø
Are the tool magazine inserts worn?
M Exchange the tool magazine inserts against new ones.
Chapter 6.11, page 28

Ø
Are screws, pins and clamping mechanisms as well as
the corresponding openings contaminated by pro-
cessing dust?
M Clean the mentioned components thoroughly.
Chapter 6.4, page 24

Ø
Are the tools worn?
M Check the tools in the tool magazine and exchange the
worn tools with new ones. Also check the tool life val-
ues which are shown in DentalCNC.
Ø
Do rings on the tools sit in the groove on the tool
shank?
M Check all tools and push rings that have moved into the
groove again.
Ø
M
Ø
b
S
Ø
S1.
S2.
Ø
S
Ø
M

Ø
M1. Clean the collet chuck with the provided spindle ser-
M2. When you insert the collet chuck into the spindle,

Ø
M
Ø
M

Original Operating Instructions: K4 edition
Document version: E – 02/2020
Do the parameters of the job in DentalCAM corre-
spond to the parameters of the blank?
Make sure that the following parameters of the job and
of the blank correspond to each other and that they are
suitable for the objects that you want to machine:
Material type
„
Dimensions of the blank
„
Indications (types) of the individual objects
„
Do you use the newest version of the manufacturing
software that is released for the K4 edition?
New versions often contain important optimizations.
Update the applications by clicking on the de-
picted icon. Alternatively, contact customer
service.
Are the STL files of sufficient quality?
Before you import STL files into the manufacturing
software, check their quality. Especially consider the
manufacturer information on wall thickness and bor-
der thickness.
If necessary, adjust the settings of your scanner and
scan application.
Are the bars of the individual objects set correctly?
If you set bars, consider the corresponding information
in the documentation for DentalCAM.
Is the measuring key contaminated? This prevents a
correct tool measurement.
Clean the measuring key with a brush.
Chapter 6.4, page 24
Is the collet chuck of the spindle contaminated or is it
loosely seated in the spindle?
vice set.
make sure that it is properly seated.
Chapter 6.5, page 24
Did you calibrate the machine shortly before the
problems occurred or have there been any problems
recently with the tool change?
Contact customer service.
Did you exchange the collet chuck at the recommend-
ed interval?
Verify the recommended interval for exchanging the
collet chuck in the maintenance table and exchange
the collet chuck if necessary.
Chapter 6.2, page 23
Troubleshooting
31