806 Каталог GUHRING 2016 Режущий инструмент для обработки наружной и внутренней резьбы Стр.794

Каталог GUHRING 2016 Режущий инструмент для резьбы Стр. 794 0806 Lab2u

Technical section TROUBLESHOOTING Errors and difficulties with reground taps Problem Possible causes Solution 1. Thread produced is too large 2. Thread produced is too small 4. Tool life insufficient burrs cutting edge geometry (chamfer lead, rake-, chamfer-, spiral point angle) not retained remove burrs observe technical specifications when regrinding observe regrinding instruction worn section has not been reground correctly tap too small due to no. of regrinds 3. Thread produced not according to requirements burrs cutting edge geometry (chamfer lead, rake-, chamfer-,spiral point angle) not retained peak-to-valley height of the reground tap too large cold welding at the flanks cutting edge geometry (chamfer lead, rake-, chamfer-, spiral point angle) not retained loss of tap hardness due to heat development during the regrinding process loss of coating regrind again or apply new tool observe max. regrinding limits max. regrinding limit reached apply new tap remove burrs observe technical specifications when regrinding observe regrinding instruction regrind again or apply new tool observe max. regrinding limits remove cold welding marks check quality of grinding wheel check coolant supply check quality of grinding wheel check coolant supply recoat check coating of the material to be machined 794 GUHRING