Manufacture of power springs
Parallel and serial mounting
A power spring stores energy when a pre-tensioned strip of spring steel is wound. This energy, minus minimal friction losses, is released as the spring unwinds. Power springs are a cost-effective, environmentally friendly alternative to motor drives. They deliver strong forces with multiple working turns and offer a long service life. Several power springs can be mounted in parallel or in series to increase strength or extension length.
Premounted power springs
Various assembly and treatment options
Power springs are made from a pre-stressed metal strip wound into contiguous coils. They can be mounted in wire rigs, returnable retaining rings, plastic housings, and other custom-made casings. Power springs can undergo heat treatment, edge deburring, anti-corrosive oiling, identification marking, greasing, and pretensioning. CGR manufactures power springs from strips ranging in width from 2 to 200 mm and in thickness from 0.05 to 0.60 mm. These strips are made of textured carbon steel, stainless steel, and special alloys. CGR also handles the entire assembly process, including the injection moulding of plastic casings.
Energy storage
From engine starters to cable retractors
Power springs are widely used for retraction, weight compensation, and torque storage. Power springs can be found in a variety of applications, including drug auto-injectors, seat belt retraction mechanisms, spacer belt barriers, retractable dog leashes, small engine starters, cable or hose retractors, window winders, draw wire sensors, rope tensioning systems and fall arresters.
CGR relies on its STRAIN advanced research laboratory to develop specific technical solutions for the complex problems of sizing and manufacturing spiral springs.
