Общий каталог ZCC-CT 2019 - страница 1115

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TurningMillingDrillingTechnicalInformationIndex Technical information Technical information – drilling A Trouble shooting – solid carbide reamers Problem Solution – Reduce the diameter of the reamer. – Check concentricity of the reamer and hole. Oversized hole – Check the radial run-out of the reamer.– Check the shank of the reamer for scratches. – Select a suitable coolant. – Adjust the cutting parameters. – Increase the diameter of the reamer. – Reduce the cutting speed. Hole too small – Reduce allowance. B – Regrind or replace the reamer.– Ensure sufficient cooling. – Guarantee concentricity of the reamer chamfer. Poor hole roundnessand straightness– Reduce overhang.– Check radial run-out after the reamer is clamped.– Adjust concentricity of the reamer and hole. – Check and ensure drill geometry. – Reduce the cutting speed. – Ensure correct reaming allowance. Poor surface quality – Check the cutting chamfer length of the reamer for wear and built-up edge.– Ensure stability of the machine, tool holder and reamer. – Chose the reamer according to the application. C – Check the hole allowance. – Pull out the reamer in cutting direction. – Reduce the cutting speed. Poor bore quality – Use reamers with more teeth.– Check for concentricity and radial run-out. – Improve coolant supply. – Chose the optimal coolant lubrication. – The guide chamfer is insufficient. Check the drill and drilling axis. – Adjust machining allowance. Reamer breakage – Ensure sufficient coolant supply. and thermal damage – Adjust the cutting speed and feed rate. – Improve the stability of the machine, the tool holder and the cutting tool. D – Change or regrind the cutting tool if the cutter wear is too high. Damage on reamer shank – Check clamping sleeve and tool holder for damage. – Check coolant supply. Short tool life – Change from straight fluted to helical fluted reamers. – Check all factors affecting machining precision. Scratched hole surface – Check the cutting edge for built-up edges and if necessary correct the cutting data.– Improve clamping of the workpiece. – Improve clamping of the workpiece. Trumpet-shaped entry hole – Check radial run-out of the clamped reamer. – The centre of the reamer may not be aligned with the centre of the hole. Adjust concentricity. E C 174