SumiReamer SR Type
■ Troubleshooting Failure
Countermeasures
Failure
Countermeasures
Enlarged Diameter
Return Mark
· Reduce the runout as much as possible (use a holder with a diameter correction mechanism). · Decrease the cutting speed. · Increase the feed rate. · Increase the coolant concentration. · Reduce the stock removal. · Check the cutting edge for damage (whether there are built-up edges). · Change the reamer diameter.
· Reduce the runout as much as possible (use a holder with a diameter correction mechanism). · Check the cutting edge for damage (whether there are built-up edges). · Reduce the stock removal. · Change to an insert with a sharper cutting edge shape. · Decrease the return (lifting) feed.
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Tapered Hole
Irregular Cutting Noise
· Reduce the runout as much as possible (use a holder with a diameter correction mechanism). · Decrease the cutting speed. · Decrease the feed rate.
· Decrease the coolant concentration. · Increase the stock removal. · Check the cutting edge for damage. · Change the approach angle of the insert cutting edge.
· Adjust the coolant concentration. · Review the pre-machining process.
· Review the clamping method of the workpiece. · Compare the hole diameters when the workpiece is clamped and when it is unclamped. · Check and correct the direction of chip evacuation.
Chatter marks on machined surface
Small Work Diameter
· Reduce the runout as much as possible (use a holder with a diameter correction mechanism). · Change the approach angle of the insert cutting edge. · Review the clamping method of the workpiece. · Decrease the cutting speed. · Increase the feed rate.
· Replace the insert. · Decrease the coolant concentration.
· Increase the stock removal. · Increase the cutting speed. · Decrease the feed rate.
Poor Surface Roughness
· Check the cutting edge for damage. · Reduce the runout as much as possible (use a holder with a diameter correction mechanism). · Check whether the cutting conditions are within the recommended range. · Change to internal coolant supply. · Increase the coolant concentration.
● Precautions for SD Type (Center Bolt Clamp Type) This product can be used for both through-hole and stop-hole boring. However, the head of the center bolt protrudes from the end of the body, so ensure clearance by referring to the protrusion of the center bolt ( LFA ) shown in the dimension table.
[For Through Boring]
[For Stop Boring]
Obstacle
Bottom Face of Workpiece
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