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October 2009

Schmidt Press Newsletter

Application of Interest
Medical Industry – Stent Marker Installation - SCHMIDT® Application 2766

SCHMIDT® Technology was asked to design a pressing station to assist in manipulation and location of a stent to permit the installation and forming of four makers, one at a time, into four separate eyelets of the stent.  Due to the size of the parts, a markers major diameter is 0.027”, and the fact that this assembly is inserted into the human body, a high degree of precision from both the press and tooling was required.

Based on the force requirement, the production volumes, the type of operation (which required force at the end of the stroke) and the need for accuracy in final pressing position, a Schmidt Nr. 13RF Toggle Press was selected for this process.  The R or return stroke lock feature was desired to ensure that the full press stroke was completed during every operation and the F or fine micrometer adjustment was desired because lot based material variations would require precision adjustment of the final pressing position.

In order to process a stent, the operator loads a marker into the nest and then places the eyelet of the stent over the marker, laying the stent into a v-block for support.  The press handle is pulled allowing the upper forming tool to contact the marker, forming it to a fixed position.  Once the first marker is installed, a handle on the V-block is used to lift the V-block, assisting in positioning of the stent for the next marker installation and form.  This process is repeated until all four markers are attached to the stent.

This simple setup greatly improved their previous method, limits operator variability plus provides far better control over the operation and improved consistency.

See other interesting applications at www.schmidtpresses.com/products/presses/7appFliers/qFliers.cfm

 

Tip of the Month
Project Tag Location
Did you know that any project requiring engineering is assigned a project number by SCHMIDT?  The purpose of this is to make it easier for both us and our customers to obtain information specific to a machine that they have purchased.  Each system is shipped with a project tag installed in a specific location that identifies the project number.  To make things easier, we have created a document that shows where this tag is located.   This document, along with many other helpful pieces of information, can be found and downloaded from the Instruction and Reference section of our website, which is located at http://www.schmidtpresses.com/products/download/instructions.htm