![]() ![]() More Consistency - Without random chips smearing or wiping out threads accidently, form taps gauge more uniformly.Tap Strength - Form taps do not have conventional flutes which means the tap has more supporting material and rigidity vs.This makes form tapping ideal for blind holes, especially in materials like copper and stainless steel. Chipless Tapping - No chips are created when form tapping, the material is simply displaced into the thread shape.No use, distribution or reproduction is permitted which does not comply with these terms. This is an open access article distributed under the terms of the Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0), which permits non-comercial use, distribution, and reproduction in any medium, provided the original publication is properly cited. Durability of Cutting Tools during Machining of Very Hard and Solid Materials, 25th DAAAM Int. Roughness Evaluation of the Machined Surface at Interrupted Cutting Process, Manufacturing Technology, Vol. (2011) The influence of heat treatment by annealing on clad plates residual stresses, Metalurgija, Vol. MATESA, B., KOZAK, D., STOIĆ, A., SAMARDŽIĆ I.(2017) Dynamics of Linear Hydraulic Cylinder with Mass Load, Manufacturing Technology, Vol. (2006) Investigation of several PVD coatings for blind hole tapping in austenitic stainless steel, Surface and Coatings Technology, Vol. (2006) Investigation of the torque characteristics in vibration tapping of hardened steel, International Journal of Machine Tools & Manufacture, Elsevier, 46, pp. (2003) Fundamental aspects in vibration assisted tapping, Journal of Material Processing Technology, Elsevier, 132, pp. (2017) Influence of the Workpice Quality on the Cutting Tool Life when Gear Wheel are Machined, Manufacturing Technology, Vol. VYCHYTIL, J., HOLECEK, M, (2010) The simple model of cell prestress maintained by cell incompressibility, Mathematics and computers in simulation, 80(6), 1337-1344.(2010) An experimental study on the effects of lubrication in form tapping, Tribology International, Vol. Journal of Materials Processing Technology, Vol. (2012) Experimental study of forming and tightening processes with thread forming screws. (2003) Effects of synchronizing errors on cutting performance in the ultra-high-speed tapping. HENDERER, T, (2006) Solid synchronicity: realizing true high-speed synchronous tapping with solid-carbide tools. ![]() (2002) Investigation of thread tapping load characteristics through mechanistic modeling and experimentation. (2002) Predictive models for the forces and torque in machine tapping with straight flute taps. (2012) Analysis of form threads using fluteless taps in cast magnesium alloy (AM60). (2017) Optimization of the Pressure Porous Sample and Its Manufacturability by Selective Laser Melting, Manufacturing Technology, Vol. Keywords: tool life, thread, tap, experiments, helix angle, tool wear The types of tool wear have been also analysed at individual cutting speeds. Achieved results were statistically processed and the dependencies of thread length (m) and tool life (min) respectively on the cutting speed were plotted. The changes in a size of the M12 thread outside the tolerance field 6H, the visible changes in tool wear and the brittle fractures of the tools have been selected as the criteria for tool life evaluation. Microhardness of the workpiece bars was checked within preliminary tests as well as a rank angle of tools to be ensured the same conditions of experiments. They were produced from C45 steel that is a standard material used at long-term tests of tool durability. The holes for threads making were pre-drilled into workpieces that were bars (with a cross-section of 30 x 60 mm). Three helix angles ω = 0°, 15° and 35° of taps have been investigated at the cutting speeds of 10 mmin-1 (within the first experimental phase) and 20, 30, 40 mmin-1 (during the second phase). They were produced from high speed steel with cone type C. During long-time tests, the uncoated taps for M12 threads making were used. ![]() The article deals with an experimental investigation tool life of the thread making tools. Jana Pawla II 37, 31-864 - Cracow, Poland UTB Tomas Bata University in Zlin, Faculty of Technology, Vavreckova 275, 760 01 Zlin 3Ĭracow University of Technology, Faculty of Mechanical Engineering, Al. TU Kosice, Faculty of Manufacturing Technologies with the seat in Presov, Sturova 31, 080 01 Presov, Slovakia 2 ![]()
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