Vystružovací nástroje/Reaming Tools - Komet Group

Technical Application Hints
Fault Cause Remedy
Bore too large Reamer is not running true in the spindle. Use DAH-Compensation Holder.
Alignment not precise, reamer cuts at Correct alignment or use
the back end.
DAH-Compensation Holder.
Build up edge. Use another coolant, if necessary reduce cutting
speed.
Reamer too big. Repair Reamer by replacing blades.
Tapered bore Faulty alignment. Correct alignment or use DAH-Compensation
Holder or DPS-Floating Holder.
Misalignment of head-stock with tail-stock. Correct tail-stock or use DAH-Compensation
Holder or DPS-Floating Holder.
Lipped bore Faulty alignment. Cutting edges press at start. Correct alignment or use DAH-Compensation
Holder or DPS-Floating Holder.
Cutting edge tail cuts especially when shank
sags in floating holder.
Ensure better axial alignment.
Fasten floating holder if it can be corrected
axially. Fix reamer rigidly.
Bore too small Reamer too small in Diameter. Use reamer with correct diameter.
Worn reamer. Expand, regrind or replace reamer.
Bore not true, shows
chatter marks
Surface quality
unsatisfactory
Reamer works hard
Reamer jams
Scoring in bore
«feed marks»
Scoring in bore
«retraction marks»
Reaming allowance too small. Increase reaming allowance.
Concentricity and alignment error of tool Correct alignment and true run or
and spindle to large.
use DAH-Compensation Holder.
Asymmetrical cutting through uneven entry
surface.
Countersink bore.
Deformation through clamping of the work
piece.
Correct clamping of the work piece.
Cutting edges blunt or notched. Regrind correctly.
Bevel not uniform. Give bevel accurate regrinding.
Reamer does not run true. Check cylindrical accuracy of edges or use
DAH-Compensation Holder.
Wrong machining data. Follow recommendations.
Failing or insufficient coolant, chips getting
jammed.
Reduced back taper because taper adjusting
screw has loosened.
Supply proper coolant with strong jet. If possible
use tools with internal coolant supply.
Cylindrical grinding with adequate taper,
resharpen.
Circular land too wide. Make a relief grind as instructed.
Edge clearance not ground away after cylindrical
grinding.
Regrind face.
Different height of bevels or teeth. Check concentricity of bevel and circular land
and if necessary regrind.
Built up edge. Reduce cutting speed.
Reamer is fed out bore contact. Trough bore: Bevel angel + 2 mm past bore exit.
Machine is not solid enough. Retraction not with rapid but with increased feed.
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