Creating a simplified worm wheel profile leads to approximating it through the use of sections.
Leszek SKOCZYLAS, Dawid WYDRZYŃSKI, Łukasz RĘBISZ 2016, 'COMPUTER AIDED MACHINING OF SIMPLISTIC WORM WHEEL TEETH PROFILE', Applied Computer Sciencehttp://www.acs.pollub.pl/pdf/v12n1/6.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Worm gears are special gears consisting of a worm wheel and a worm.
Ján Kráľ, Ján Kráľ Jr. 2013, 'GRINDING OF SHAPED TOOLS ON CNC TOOL GRINDER', Advances in Science and Technology Research Journalhttp://www.journalssystem.com/astrj/Grinding-of-shaped-tools-on-cnc-tool-grinder,152,0,2.html. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Worm wheel and worm are carefully cut, and protected by brass shields.
WM. Gaertner & CO. Astronomical Instruments and Accessories (1908). Retrieved in 2019 from Project Gutenberg (https://www.gutenberg.org/ebooks/)