Worm Wheel set with Adjustable Backlash: Application' s advices - Ghiringhelli - #1

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Page 1 Ghiringhelli S.r.l. I – 20091 Bresso (MI) Via Vittorio Veneto 109 Tel. ++39-02-6108941 Fax.++39-02-6104748 E-mail info@ghiringhelli-srl.com Web Site: www.ghiringhelli-srl.com C.F.-P.I.: 00840170153 C.C.I.A.A. Milano n. 175647 Tribunale di Milano n. 159718/3896/18 Worm Wheel set with Adjustable Backlash: Application’ s advices The Project: For plan a worm wheel set with adjustable backlash correctly, it’ s very important fix the measures and the worm wheel set’s total drawing. The drawing must transfer the starting measure of the setting up (W) and the worm shaft’ s translation course for the adjustable backlash. The backlash is recovered with the worm shaft’ s axial translation: foresee an axial translation of 1/10 of the size. For avoid reversals of position during the setting up, the worm wheel made of Bronze must be asymmetrical. · The box: all the adjacent elements must be worked with the right precision and the worm wheel set’ s setting up must be executed with the possibility of registration during the setting up. During the executive step we suggest: bore the boxes with a tolerance of 5 Js on the size. · The Worm Shaft: with the first setting up, the thread will stick out respect to the worm wheel; then, with a right running in, the worm shaft will “go back” on the worm wheel and it will shift more and more with the following and necessary registrations for recover the backlash.