Transcript
Troubleshooting Guide Problem Oversize hole Possible Cause Possible Solution a.) The reamer is running eccentric to the center line of the machine spindle a.) Use the Modular system with radial adjustment b.) Excessive misalignment causing reamer to cut on back taper b.) Rectify misalignment c.) Material build up on cutting edges c.) Replace the coolant or change the cutting speed d.) The reamer diameter is too large d.) Use smaller reamer or regrind existing one a.) The reamer diameter is too small a.) Use larger reamer b.) The reamer diameter is worn b.) Expand, regrind or replace the reamer c.) The coolant is not suitable c.) Replace the coolant d.) Stock allowance too small d.) Increase the stock allowance e.) The cutting speed is too low e.) Increase the cutting speed Tapered hole a.) Excessive misalignment a.) Correct misalignment Burr at the entry of the hole a.) Excessive misalignment a.) Correct misalignment a.) Concentricity and alignment error between the workpiece and the tool a.) Correct misalignment and use the modular system with radial adjustment b.) Asymmetrical cutting or angled surfaces b.) Create a chamfer on the lead-in a.) One cutting edge is chipped a.) Regrind the reamer b.) The lead-in is irregular b.) Regrind the reamer c.) Back taper on the cutting edges too great c.) Regrind the reamer Undersize hole The hole is not straight d.) Excessive misalignment d.) Correct misalignment or use the modular system with radial adjustment e.) Cutting data not correct e.) Verify cutting data f.) Poor chip evacuation f.) Verify coolant volume and pressure or use through tool coolant a.) Back taper on the cutting edges too small a.) Regrind the reamer Poor hole finish The reamer creates excessive torque loading b.) The radially ground land is too wide b.) Regrind the reamer c.) Replace the coolant c.) The coolant is not suitable 46 Allied Machine & Engineering Corp. Alvan® Expandable Reamers Courtesy of S.C.A.M.I.
