811 Каталог GUHRING 2016 Режущий инструмент для обработки наружной и внутренней резьбы Стр.799

Каталог GUHRING 2016 Режущий инструмент для резьбы Стр. 799 0811 Lab2u

GENERAL INFORMATION THREAD FORMING Lubrication for thread forming For tool design four different cases should be differentiated between Vertical machining of a blind hole Lubrication grooves and internal coolant delivery is not necessary; external coolant delivery is sufficient (Axial coolant is recommended for very deep threads). Lubrication grooves are required; internal coolant delivery is not necessary. Via the lubrication grooves the externally delivered coolant can advance to the form edges (Radial coolant is recommended for very deep threads). Lubrication grooves and internal coolant delivery is necessary. Lubrication grooves are required. Internal coolant delivery with Axial coolant exit is sufficient. radial exit is recommended. Cooling lubricants with fluteless taps With fluteless taps the main task of the coolant is lubrication. The better the lubrication with the maximum concentration, the longer the tool life. There are two different types of lubricant: Oil based lubricants These are mineral oils with the best lubricating characteristics. They reduce friction and achieve optimal life. Soluble lubricants These soluble lubricants are a concentrate thinned to an emulsion prior to the use with water. The concentration must not be below 6%. A content more than 12% is ideal in order to achieve a long life thanks to a good lubrication effect Friction GUHRING 799 Technical section