Общий каталог Tungaloy 2020 - 2021 - страница 1654

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Trouble shooting i n Endmilling

TroublePossible causesCountermeasures
¡At the start of machining ¡At the end of machining¡Reduce feed. ¡Reduce tool overhang length. ¡Exchange to short cutting edge tool.
BreakageWhen usual machining¡Reduce feed. ¡Managing tool life / Exchange in shorter time. ¡Replace chuck or collet to new one. ¡Reduce tool overhang length. ¡Make optimum honing on the edge. ¡Reduce fl utes. E.g. 4 fl utes / 3fl utes, or 2fl utes. ¡Use enough coolant. Change direction of supplying coolant.
When change the direction of feed¡Use the circular interpolation in NC machine. Stop feed shortly before changing. ¡Lower feed around changing part. ¡Replace chuck or collet to new one.
Chipping on corner edge¡Chamfer the corner with hand-stick grinder. ¡Down cutting� Upward milling.
Chipping on boundary part¡Change cutting direction, Down cutting / Upward milling. ¡Reduce cutting speed.
Fracture on cutting edgeChipping on central part or all edges.¡Make slight honing on the edge. Or make honing bigger. ¡Change spindle revolution number. ¡Increase cutting speed. ¡If chattering, increase feed. ¡Use coolant or air blast. ¡Replace chuck or collet to new one. ¡Decrease cutting speed.
Fracture on cutting edge¡Decrease feed. ¡Reduce fl utes. E.g. 4 fl utes / 3fl utes, or 2fl utes. ¡Make slight honing on the edge. Or make honing bigger. ¡Replace chuck or collet to new one. 【For Solid carbide endmill】 ¡Decrease cutting speed. ¡Use enough coolant. Change direction of supplying coolant.
Large wear in short time¡Decrease cutting speed. ¡Change cutting direction, Upward milling / down cutting. ¡Increase feed. ¡Use coolant or air blast. ¡In reground tool, grind fl ank face with FINER wheel.

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