33
16. Operational faults and the elimination of such
Operational faults
Possible cause
Remedy
Transverse or longitudinal skid
cannot be moved or can only
be moved with considerable
force
Guide play is set too narrowly
Adapt the guide play
Play of the trapezoidal-threaded
nut is set too narrowly (only
transverse skid)
Adapt the play of the
trapezoidal-threaded nut
Rust on work pieces of machine
parts when using coolant
lubrication
Wrong coolant set
Check the mixing ratio of the
coolant and correct if required
(never cool with water alone!)
Tool holder cannot be inserted
into the main spindle (reducing
sleeve of the main spindle)
An incorrect tool taper of the tool
holder has been used in
combination with the reducing
sleeve
Only use the appropriate tool
holders for the machine
Inner cone of the reducing sleeve
or outer cone of the tool holder is
contaminated
Clean the relevant cone
Tool overheated
Revolutions too high
Reduce the revolutions
Feed too high
Reduce the feed
Working without coolant
Use coolant
Insufficient coolant feed at the
cutting edge
Align the coolant hose
correctly
Tool blunt
Sharpen tool or use a new tool
Increased friction caused by
shaving build up in the tensioning
groove of the tool (drilling work)
Remove the shavings from the
hole more frequently
(withdraw)
Use a coated tool
Wash the processing area with
coolant
Unsuitable tool chosen for the
material to be processed
Only use the suitable tool for
the relevant material
Summary of Contents for D4000
Page 42: ...42 18 Drawings and legends 18 5 Headstock Tumbler gear...
Page 44: ...44 18 Drawings and legends 18 6 Bed with lead screw...
Page 46: ...46 18 Drawings and legends 18 7 Change gear quadrant...
Page 48: ...48 18 Drawings and legends 18 8 Tool skid Transverse skid...
Page 50: ...50 18 Drawings and legends 18 9 Tool skid Lock plate...
Page 52: ...52 18 Drawings and legends 18 10 Tool skid Longitudinal skid...
Page 54: ...54 18 Drawings and legends 18 11 Tailstock...
Page 73: ...73 23 Tensioning bracket with milling machine table optional 23 7 Drawing and legend...