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Process Design for Connecting Rod and Main Bearing

RESUME

The paper discusses the machining process for a connecting rod of a passenger car and the main bearing of a horizontal wind turbine of 2 MW capacity. For each component, details such as a brief introduction to the product, its use, material used for the component, machining sequence, machine details and pictures and the cutting parameters are given. Other details given include the quality aspects and the tooling required for the part.

PART 1: THE CONNECTING ROD FOR A TYPICAL PASSENGER CAR ENGINE

2.5 Quality and Mass Production

Bearing quality and reliability plays a very important role in the life of the windmill. Quality begins with maintaining the correct hardness as specified and if the component and sub component is too hard, then the bearing will either shatter or fail and if it too soft, then the bearing will not be able to sustain the high loads. Surface finish and play between the balls and the races is important. If the surface finish is too rough, then the bearings will not run true and there will be an excess of run out (Shigley, 1990).

The method mentioned above is outlined for mass production. By adding CNC machines, it would be possible to increase the output.

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