丝锥培训TDMtaptraining讲述.pptVIP

TAPPING Tap - back taper Thread-reliefs Chip cross-sections at different lengths of chamfer Application Areas Tapping of blind hole threads Simplified General Plan of Types for TITEX PLUS Taps Simplified General Plan of Types for TITEX PLUS Taps Tapping hole sizes Reasons for inaccurate threads Acc. to ANSI Maschine Tap B ... 15 Note: Chips are stored mainly in flutes, only few drop to the bottom of hole. Maximum tapping depth is reached when flutes are filled with chips completely. Specification: straight flutes short chamfer 2 -3 threads length of chamfer Application: for blind holes of small depth, approx. 1 - 1.5 x dia. at coarse pitch thread Suitable for these types of holes Only suitable for short chipping materials T3-004-0101-E-p Machine Taps B ... 18 T2-007-0011-E-p Specification: 2 - 3 pitch chamfer Straight flutes Surface-treated Application area: Blind- and through holes up to 3 x dia. Notes: Special cast iron tap. The short-broken chips are either stored in the flutes or fall right into the tapping-hole. A surface treatment combined with a special flute- and flankgeometry guarantee excellent tool life. Only to be used for short chipping materials! Maschine Tap B ... 17 Note: Due to inclination of the spiral point chips are pushed forward in direction of feed where they cannot interfere with the cutting action. For this reason flute-space within the threaded portion of the tap is not neccessary or can be kept to a minimum, as it just serves the purpose of coolant supply. Specification: straight flutes with spiral point (gun-nose) 3 - 5 threads chamfer (longer tool life / less chipped teeth) Application: for through holes T3-003-0101-E-p Machine Taps B ... 24 T2-010-0011-E-p Notes: Tap for short-chipping NON-FERROUS metals such as brass or magnesium. Special flute and flank geometry results in optimum cutt