English
Deutsch
Français
Italiano
Español
8 recommendations for a successful reaming !
Beware: before reaming, have a look and control our "recommendations for reaming".
1. Hole oversize
Problems :
- lack of coolant, edge build up on reamers
- irregular angles
- depth of cut too big, reaming tolerance too high
- axial alignment between tool and hole displaced
Solutions :
- correct alignment or use RE-AL floating holder
- check diameter and tolerance of reamer
- check coolant, increase pressure, consider using through coolant
2. Hole too small
Problems :
- reamer is blunt
- depth of cut is insufficient
- workpiece springs back
Solutions :
- exchange reamer
- increase depth of cut
- check coolant, increase pressure, consider using through coolant
3. Tapered hole (entrance too big)
Problems :
- reamer oscillates in the axis
- drilled hole is not centred
- axial alignment displaced between tool and hole
- swarf in upper part of hole
Solutions :
- correct alignment or use RE-AL floating holder
- ensure alignment of working tool
4. Tapered hole (end too big)
Problems :
- axial alignment displaced between tool and hole
- swarf in lower part of hol
- reamer is bottoming the hole
Solutions :
- correct alignment or use RE-AL floating holder
- ensure alignment of working tool
- ream (deep) hole in 2 to 3 passes
5. Axial displacement
Problems :
- drilled hole is out of axis
- concentricity of lead angle is not correct
Solutions :
- check concentricity of drilled hole
- check concentricity of reamer axis
6. Hole is oval or convex
Problems :
- workpiece moves during reaming
Solutions :
- fix workpiece precisely/constantly
7. Bad surface quality of hole (check also 8)
Problems :
- reamer or hole damaged
- insufficient supply of coolan
- edge build up on reamer
- poor removal of swarf
- axial alignment displaced between hole and tool
Solutions :
- replace reamer
- correct alignment or use RE-AL floating holder
- consult recommendations of reaming
- check coolant and increase pressure, consider using through coolaant
8. Reamer is seizing and breaking (check also 7)
Problems :
- reamer land is too large
- insufficient back taper (min. 0,015 on 100mm)
- drilled hole too small and not centred
- lead angle badly ground
Solutions :
- according to material/spezial alloy adapt lead angle or land
- correct alingment or use RE-AL floating holder
- material dependent (soft/normal/treated) reduce or increase reaming speed