Rotor Clip Truwave Wave Springs Reduce Downhole Tool Costs
Spiral Wound Multiple Turn Wave Springs, Crest-to-Trough Designs, are used to pre-load anchoring devices of downhole tools that will bite into the casing bore once the tool has been actuated.
Customer experience has shown that once the slips of the anchoring devices have a good bite in the casing, a nominal load needs to be applied to the heel of the slips to prevent them from de-energizing due to movement during applied loads to the tool. Normally, the required load is provided by a compression spring (coil spring), but these can be replaced by a multiple turn wave spring, crest-to-trough design.
In that way the axial space in the application can be reduced, allowing the engineer to design the whole tool in a much more compact way. This saves material and reduces costs effectively. In addition, the wave spring provides a more constant load during the required travel (which is necessary to...
In that way the axial space in the application can be reduced, allowing the engineer to design the whole tool in a much more compact way. This saves material and reduces costs effectively. In addition, the wave spring provides a more constant load during the required travel (which is necessary to actuate the tool) compared to a conventional coil spring.
These wave springs can also be made from exotic alloys including Inconel and Elgiloy to withstand high temperatures and corrosive environments often associated with these types of tools.
Published by Rotor Clip on Aug 01, 2013
Technical Considerations for the Selection of Retaining Rings
Design engineers are challenged daily to come up with economical designs that reduce weight, size, raw materials, and labor. This competitive mandate affects every facet of the design, including the fasteners needed to hold components in place. One style of non-threaded fastener that has been widely used to accomplish these goals is the retaining ring. Knowing which ring to use in a given fastening situation can greatly contribute to the overall effectiveness and economy of a design.
Calculating Endplay Take-Up for Beveled Retaining Rings
The article discusses how beveled retaining rings are the obvious choice in high speed production over shims and washers. The article is broken down to show how the retaining rings are designed, calculated and manufactured for maximum endplay take up while still being cost effective for both consumer and manufacturer.