Bread machine gear

Bread machine gear

thingiverse

A very popular model of bread-making machine, sold under several brand names, has a (purposefully?) faulty gear connected to the electric motor. This gear moves the mixing paddle, transmitting the movement of the electric motor via a flat-sided shaft. As it is fully made of quite soft plastic and has to transmit some serious torque, the shaft cuts through the gear's plastic in a few months of regular use. The problem can be seen in the 3rd picture. So I redid the gear, with a place for a small metallic plate to prevent this problem. O modelo mais comum de máquina de pão, vendido sob as marcas Mondial e Britannia, entre outras, tem uma engrenagem que sempre dá problema. Ela transmite o movimento do eixo do motor para a pá de bater, mas por ser feita totalmente de plástico macio, o eixo corta o plástico em poucos meses de uso regular. Na terceira foto se pode ver como o orifício da engrenagem, que deveria ter a forma duma letra "D", fica completamente circular. Para impedir que isso aconteça, refiz a engrenagem com lugar para uma plaquinha de metal.

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