Wedges – Supplements – Ripple Springs motors and generators.
Wedges or locking groove dowel
The earliest were made of hardwood, then emerged in the laminating Pertinax. (Kraff paper with phenolic resin) and Micarta (cotton fabric with phenolic resin). In the ’50s, began to test materials such as fiberglass and polyester resin or epoxy resin, which was improved flexural and shear hot. Later with the development of machines more compressed (smaller and more power), with significant reduction of the cooling air exchange in the environment, it comes to the development of materials with greater heat resistance, and lower relative weight loss over time . Pins emerge glass fabric-epoxy novolocas, who manage to keep as much time in the features mentioned above.
To achieve the proper adjustment of the wedges or pins necessary complement to the closure strips of the same material as supplement. These strips vary in thickness and width according to each machine. The more normal thickness ranging from 0.20 mm to 2.0 mm.
Ripple Springs (Spring wavy)
It consists of a laminate consisting of several layers of glass fabric with epoxy resin as many threads in the warp, to give an effect one way that improves resistance to bending.
The structure and geometry of the springs are adapted to the construction requirements. The flexural stress can be subjected to the adjustment of the wedges or pins in particular should not exceed 65% of the specific value of bending the material with which it is built.
Glass Content: 65% – 70%
Maximum temp. : up to 150 ° C – 160 ° C
Specific Gravity: 1.75 g/cm3.