Page 168 - Industrial Tools Catalog (1)
P. 168

Reaming tools \ Processing and machining technology - Reaming


                    Troubleshooting when reaming


              1        bore too large                             1        hole too small
                       ƒ cutting speed too high                            ƒ cutting speed too low
                       ƒ tool diameter too big                             ƒ very thin-walled workpiece
                       ƒ built-up edges                                    ƒ tool wear limit reached
                       ƒ reamer cut too short or uneven                    ƒ insufficient reaming
                       ƒ excessive amount of oil in the coolant
                       ƒ radial run-out of the spindle or tool             ① reaming dimension ② nominal dimension
              2                                                   2
        ① Reaming      ƒ misalignment between drill and reamer
        dimension
        ② Nominal
        dimension

              1        Bore hole is conical                                Poor surface quality
                       ƒ Radial run-out of the spindle or tool             ƒ Poor chip removal
                       ƒ Pre-bored hole too imprecise                      ƒ Cutting speed/feed too high
                       ƒ Misalignment between drill and reamer             ƒ Built-up edges due to insufficient or no cooling
                       ƒ Incorrect angle                                   ƒ Breakages at the tool cutting edge
                                                                           ƒ Existing poor surface created during pre-drilling
                       ① Reaming dimension ② Incorrect dimension
              2


                       feed scoring marks in the bore hole                 Chatter marks in the bore hole
                       ƒ breakages at the tool cutting edge                ƒ Built-up edges
                       ƒ cutting speed/feed too low                        ƒ Insufficient amount of oil in the coolant
                       ƒ tool wear limit reached                           ƒ Insufficient reaming
                       ƒ built-up edges                                    ƒ Reamer clamped incorrectly or too loosely
                       ƒ misalignment between drill and reamer             ƒ Radial run-out of the spindle or tool
                                                                           ƒ Circular grinding chamfer too narrow

                       Reamer grips and breaks                    1        Incorrect bore hole position
                       ƒ Misalignment between drill and reamer             ƒ Misalignment between drill and reamer
                       ƒ Feed too high                                     ƒ Radial run-out of the spindle or tool
                       ƒ Excessive reaming                                 ƒ If necessary, work with bottoming reamer
                       ƒ Poor chip removal
                       ƒ Circular grinding chamfer too wide                ① Alignment offset
                       ƒ Insufficient taper
                       ƒ First cut incorrectly sanded








































              Source: Hahn+Kolb Werkzeuge GmbH
        168   Technical data subject to change.                                           www.iconridge.com
              Availability subject to country specific rules and regulations.
   163   164   165   166   167   168   169   170   171   172   173