568 Каталог SUMITOMO 2018 Инструмент металлорежущий Пластины Резцы Фрезы Сверла Стр.N12

Каталог SUMITOMO 2018 Инструмент металлорежущий Стр. N12 0568 Lab2u

Technical Guidance Technical Guidance Tool Failure and Remedies Trouble Shooting Guide for Endmilling Failure Cause Remedies Cutting Edge Failure Excessive Wear Cutting Conditions Tool Shape Tool Material - Cutting speed is too fast - Feed rate is too fast - The flank relief angle ist too small - Insufficient wear resistance - Decrease cutting speed and feed rate. - Change to an appropriate flank relief angle. - Select a substrate with more wear resistance - Use a coated tool Chipping Cutting Conditions Machine Area - Feed rate ist too fast - Cutting depth is too deep - Tool overhang ist too long - Work clamps are weak - Tool is not firmly attached - Decrease cutting speed. - Reduce depth of cut - Adjust tool overhang for correct length - Clamp the work piece firmly - Make sure the tool is seated in the chuck properly Tool Fracture Cutting Conditions - Feed rate ist too fast - Cutting depth is too deep - Tool overhang ist too long - Cutting edge is too long - Decrease cutting speed. - Reduce depth of cut - Reduce tool overhang as much as possible - Select a tool with a shorter cutting edge Others Shoulder Deflection Cutting Conditions Tool Shape - Feed rate is too fast - Cutting depth is too deep - Tool overhang is too long - Cutting on the down-cut - Helix angle is large - Decrease cutting speed. - Reduce depth of cut - Adjust tool overhang for correct length - Change directions to up-cut - Use a tool with a smaller helix angle Unsatisfactory Machined Surface Finish Cutting Conditions - Feed rate is too fast - Packing of chips - Decrease cutting speed. - Use air blow - Use an insert with a larger relief pocket. Chattering Cutting Conditions Tool Shape Machine Area - Cutting speed is too fast - Cutting on the up-cut - Tool overhang is too long - Rake angle is large - Work clamps are weak - Tool is not firmly attached - Decrease cutting speed. - Change directions to down-cut - Adjust tool overhang for correct length - Use a tool with an appropriate rake angle - Clamp the work piece firmly - Make sure the tool is seated in the chuck properly Packing of Chip Cutting Conditions Tool Shape - Feed rate is too fast - Cutting depth is too deep - Too many teeth - Packing of chips - Decrease cutting speed. - Reduce depth of cut - Reduce number of teeth - Use air blow N12