Общий каталог ZCC-CT 2019 - страница 1115

Technical information Technical information – drilling Trouble shooting – solid carbide reamers A Problem Solution – Reduce the diameter of the reamer. – Check concentricity of the reamer and hole. Turning – Check the radial run-out of the reamer. Oversized hole – 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. – Reduce overhang. Poor hole roundness – Check radial run-out after the reamer is clamped. and straightness – Adjust concentricity of the reamer and hole. Milling – Check and ensure drill geometry. – Reduce the cutting speed. – Ensure correct reaming allowance. – Check the cutting chamfer length of the reamer for wear and built-up edge. Poor surface quality – Ensure stability of the machine, tool holder and reamer. – Chose the reamer according to the application. – Check the hole allowance. C – Pull out the reamer in cutting direction. – Reduce the cutting speed. – Use reamers with more teeth. Poor bore quality – Check for concentricity and radial run-out. – Improve coolant supply. Drilling – 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. – Change or regrind the cutting tool if the cutter wear is too high. D Damage on reamer shank – Check clamping sleeve and tool holder for damage. – Check coolant supply. Information Short tool life – Change from straight fluted to helical fluted reamers. Technical – Check all factors affecting machining precision. – Check the cutting edge for built-up edges and if necessary correct the cutting data. Scratched hole surface – 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 Index C 174