N K Mandal - National Institute of Technical Teachers’Training and Research
N K Singh - Indian School of Mines, Dhanbad-۸۲۶۰۰۴,Jharkhand
UC Kumar - National Institute of Technical Teachers’Training and Research

The development of computer technology brings new opportunities in all sphere of manufacturing. Traditional methods of gear manufacturing with conventional machines have many disadvantages. The traditional methods are basically two types: Gearforming and Gear generation. Gear forming uses form cutters that are normally bought off-the-shelf and onecutter can be used repeatedly in machining many similar gears provided they are of the same module.Moreover, if the demand of the gear is very few, then buying a gear cutter for that purpose only may not beeconomical. In addition to that, all types of form cutter may not be available at all times. In this research work,an interactive program called MACRO is developed by which almost all types of gear can be manufactured bya simple end mill cutter in a CNC vertical milling machine only by changing some parameters. In thisMACRO program, an algorithm describes the point to point movement of the cutting tool of the machineresulting generation of gear tooth profile more accurately which ensures minimum mechanical lossesduring power transmission.

Parametric Programming, CNC VMCmachine, gear module, gear generation, Accuracy,CAD/CAM