Каталог Sumitomo сверла и развертки - страница 133

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SumiReamer SR Type ■ Troubleshooting for Drilling Failure Countermeasures Failure Countermeasures Large Hole Diameter ・Reduce the run-out as much as possible Return Mark (use a holder with a diameter correction ・Reduce the run-out as much as possible mechanism).  (use a holder with a diameter correction ・Decrease the cutting speed. mechanism). ・Increase the feed rate. ・Check the cutting edge for damage (the ・Increase the coolant concentration. existence of built-up edges). ・Reduce the machining allowance. ・Reduce the machining allowance. ・Check the cutting edge for damage (the ・Change to an insert with a sharper existence of built-up edges). cutting edge. ・Change the reamer diameter. ・Decrease the return (lifting) feed. Tapered Hole ・Reduce the run-out as much as possible Irregular Cutting Noise (use a holder with a diameter correction mechanism). ・Decrease the cutting speed. ・Decrease the coolant concentration. ・Decrease the feed rate. ・Increase the machining allowance. ・Adjust the coolant concentration. ・Check the cutting edge for damage. ・Review the pre-machining process. ・Change the approach angle of the insert ・Review the clamping method of the workpiece. cutting edge. ・Compare the hole size between when the workpiece is clamped and unclamped. ・Check and correct the direction of chip evacuation. Chatter Mark on Machined Surface Small Hole Diameter ・Reduce the run-out as much as possible (use a holder with a diameter correction mechanism). ・Replace the insert. ・Change the approach angle of the insert ・Decrease the coolant concentration. cutting edge. ・Increase the machining allowance. ・Review the clamping method of the ・Increase the cutting speed. workpiece. ・Decrease the feed rate. ・Decrease the cutting speed. ・Increase the feed rate. Poor Surface Roughness ・Check the cutting edge for damage. ・Reduce the run-out as much as possible (use a holder with a diameter correction mechanism). ・Check whether the cutting conditions are within the recommended range. J ・Change to internal coolant supply. ・Increase the coolant concentration. Drilling Solid ● Important Notes About SD Type (Center Bolt Clamp Type) Special This product can be used for both through-hole and Blind-hole drilling. However, the head of the center bolt protrudes from the end Indexable of the body. Therefore, ensure clearance by referring to the protrusion amount of the center bolt (LFA) shown in the dimension table. Reamer Through-hole Drilling Stop-hole Drilling Brazed Others Obstacle Bottom Face of Workpiece J111