A Pneumatic Device to make modules assembly easier (faster ?)

The EMCal Modules assembly tooling today

Some features of modules assembly tooling During initial set up, one have to tight the 5 screws by doing tours of the 5 screws with roughly ¼ turn at each tour : this is a time consuming process, 40 times ¼ turn assuming 1 mm pitch for screws and 2 mm average displacement. Loading the stack by screw is not a «following» loading : as the stack creeps, the compression load decreases until equilibrium, and need to be restored many times if an efficient compression process is wished: a « following » load shoud allow better compression for a given time, or faster compression for a given creeping. 3. During final setup, transfering compression load from screws to Belleville washers is a critical operation as any change on one of the 5 setting points impacts on the 4 others points : once again some «tours» are required in order to perform equal load for each row of Belleville Washers.

Setting up of Compression Load

Replacing 5 screws by a single device

Compression load provided by pneumatic device During compression time, compression load follows the stack as it creeps

System configuration during setup of Belleville Washers

Pneumatic device mounted on module assembly tooling