Method of installing a ferrule

A method of sequentially cutting out an area of a panel member composed of a permanently deformable material and fastening a reinforcing member in the cut out through use of selectively engaged mating male and female dies;

• the male die having a cutting end, an area of reduced cross section, and a shank portion;
• and the female die being resiliently mounted in a spring biased cutting position;
• the method comprising the steps of:
• placing the panel on said female die;
• positioning a reinforcing member having fastening tines on the male die with the tines placed in the area of reduced cross section;
• moving said male die downwardly cutting out an area in said panel;
• moving said reinforcing member into the cut out area with its tines extending through said panel as said male die further advances;
• engaging arcuate surfaces on said tines with the peripheral surface defining said cut out in said panel moving said tines outwardly away from the male die engaging flanges on said reinforcing member with the upper surface of said panel;
• moving an abutment surface on said male die into engagement with a surface on said female die moving said female die downwardly away from said tines against the force of its biasing spring;
• advancing the male die a sufficient distance through said cut out area to engage said shank portion of said male die with the tines in said cut out in an interference fit with the peripheral edge of said cut out depressing the permanently deformable panel around the area of said cut out forming a countersink therein;
• releasing said female die as said male die further advances permitting its compressed biasing spring to rapidly move the female die upwardly against the underneath side of the panel clenching said tines by reverse bending them against the underneath side of said panel securing said reinforcing member in place.

A method of sequentially cutting out an area of a panel member and fastening a ferrule reinforcing member in the cut out through use of selectively engaged mating male and female dies, the male die having an area of reduced cross section and the female die being resiliently mounted into a spring biased cutting position, the method comprising the steps of:

• placing the panel member between the male and female die members, positioning a ferrule in the area of reduced cross section on the male die, cutting out an area of the panel by moving said male die into said female die, expanding fastening tines extending from the reinforcing ferrule through engagement of a camming surface on said male die, countersinking an area in said panel member by forcing the male die into an interference fit with the peripheral edges of the cut out of said panel when the male die cam surface engages the ferrule tines, compressing the spring biasing said female die to its cutting position by moving said female die against said spring as said male die moves into said female die, releasing said female die from movement with said male die permitting the spring to rapidly move said female die toward said panel, and clenching said tines back against the underneath side of said panel in the area of the countersink in said panel as a mating countersink surface in said female die engages the ferrule tines thereby fixedly securing the ferrule in the panel cut out.