23 October 1986 Optical Alignment System For Snowmobile Motor And Driving Pulleys
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Among the production problemswhich the snowmobile industry is faced with, the precise alignment of the motor pulley with respect to the driving pulley is particularly stringent. The actual commercially availa-ble snowmobiles are designed for high performance. As an example, one of the model to be aligned is pointing at more than 170 km./hr. One of the consequences of these higher performances is the much more stringent tolerance necessary on the precision alignment of these two pulleys. The engine has to be moved in order that the desired position between the pulleys get within a tolerance of .4 or .75 mm according to the parameter. The belt that links the two pulleys can have a life expectancy as short as five hours if the engine alignment is not properly done. To obtain such a high precision alignment on the production line in the short period of time allowed to this operation, a complete optical alignment system has been developped to perform this operation. That system takes into account the four usual parameters the snowmobile manufacturer was dealing with. The resolution of the position detectors with the related electronics is within .08 mm and the four measured parameters are displayed in real time permitting the complete alignment of the snowmobile engine by looking at the panel meters instead of the calliper square and the trial and error technique they used to employ.
© (1986) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Germain Lamonde, Robert Tremblay, "Optical Alignment System For Snowmobile Motor And Driving Pulleys", Proc. SPIE 0665, Optical Techniques for Industrial Inspection, (23 October 1986); doi: 10.1117/12.938809; https://doi.org/10.1117/12.938809

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