Общий каталог ZCC-CT 2019 - страница 1107

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TurningMillingDrillingTechnicalInformationIndex Technical information Trouble shooting – drilling A Trouble shooting – solid carbide drillsError Reason Countermeasure Oversized holes – Insufficient clamping of workpiece and/or – Use precision clamping tool – Reduce spindle play – Large radial run out – Check and adjust clamped drill – Point relief is off centre – Asymmetric point angle – Regrind drill – Large radial run out – Check quality of regrinding – Point relief is off centre Irregular hole size – Asymmetric point angle – Use precision clamping – Large radial run out – Reduce spindle play – Point relief is off centre – Check and adjust clamped drill B – High wear A B – Insufficient clamping of work piece and/or – Use precision clampingtool– Reduce spindle play – Large radial run out – Check and adjust clamped drill – Point relief is off centre – High wear A B – Feed rate too high – Reduce feed rate – Insufficient coolant – Increase amount of coolant or change coolant supply C Low position accuracy – Insufficient clamping and spindle positio- – Improve positioning of machinening– Use precision clamping – Large radial run out of spindle – Calibrate spindle – Check and adjust clamped drill – The feed direction is not vertical to the – Adjust feed rate vertically to workpiece surface workpiece surface – Tool isn't aligned with centre of spindle – Centre the tool (lathe machines Bad drill run out – High tool wear – Regrind drill – Poor drill accuracy – Improve positioning of drill D – Asymmetric point angle – Regrind drill – Large radial run out – Check quality of regrinding – Point relief is off centre – Insufficient tool stability – Improve stability of tool – Uneven workpiece surface – Before boring align the workpiece horizontally to the – Tool isn't aligned with centre of spindle drill or pre-machine the workpiece (lathe machines) Inaccurate hole (roundness) – Asymmetric point angle – Regrind drill – Large radial run out – Check quality of regrinding – Point relief is off centre E – High wear – Insufficient clamping of work piece and/or – Use precision clamping tool – Calibrate spindle – Large radial run out of spindle – Check and adjust clamped drill – Clearance angle too large – Regrind the drill – Insufficient tool stability – Improve tool stability C 166