关键词: 变厚齿轮, 中间平面, 锥形蜗杆砂轮, 精密磨削

Abstract: For realizing the precision and high efficiency grinding of beveloid gears,the grinding method with conical worm wheel was put forward.Based on the geometry feature of beveloid gears,the mathematical model of conical worm wheel was established and the gear generating geometric motion principle was analyzed.The calculation formulas of conical worm's main parameters were conducted,and the diamond roller dressing method was discussed.To solve worm tooth surface equation,the analytic method was used to calculate the contact line between diamond roller tooth surface and worm wheel tooth surface and gear.According to functional software,the contact line in conjugate tooth surfaces was calculated,which was projected to a flat surface as to acquire the shape point coordinates in gear end face.Compared with the theoretical standard shape point coordinates,the numerical errors value was computed,and the results showed that the grinding method was effective and accurate,and the proposed method had a important meaning to beveloid gear's high efficiency and low cost precision grinding.

Key words: beveloid gears, mid-plane, conical worm wheel, precision grinding