The main objective of this study is to optimize the manufacturing process and design parameters of a cylindrical gear, in order to ensure high reliability of the tractor transmission while reducing production costs and material consumption. To achieve this goal, the following directions were considered: structural analysis; determination of optimal geometry; material selection; quality assurance; heat treatment. Following the implementation of this study and the technological process, the following results will be obtained: increased reliability – a gear service life of over 5,000–8,000 operating hours under load; energy efficiency – reduction of noise and vibrations in the transmission by achieving a higher precision class (ISO class 6–7); complete technical documentation – operation plans, execution drawings, and control sheets required for mass production; cost optimization – reduction of scrap by at least 15% through the use of numerical simulations and properly programmed CNC machines. The manufacturing process of the gear with internal splines begins with the cutting stage of the semi-finished product. The material chosen for this application is the alloy steel 42CrMo4, known for its high fatigue strength and resistance to dynamic loads. The semi-finished product is obtained by cutting a rolled bar with a diameter of 70 mm to a length determined by the nominal width of the gear, including the necessary machining allowance.

technological process, gear, tractor transmission

mechanical engineering

Presentation: poster