3-AXIS MOTORIZED TEST FIXTURE
Pipeline Design & Engineering created a motorized fixture that allowed the user to automatically position an echo plate relative to the end of the device under test
Mechanical Engineers, Software/Control System Engineer, Electronics/Cabling Engineer, Machinist, Assembly technician
SolidWorks 3D CAD
Test Fixture, Automation & Motion Control
- Develop motor driver to communicate with customer’s LabVIEW controller
- Move echo plate in 3 degrees of freedom (pitch, yaw, and linear displacement)
- Made from non-corrosive materials to withstand wet environment
- Mechanism for technician to easily lift functional module of fixture out of bath
SUMMARY OF ACTIVITIES
Pipeline’s customer had developed a manual process for testing an ultrasonic medical device during their R&D validation procedure, and needed to turn this into an automated production process. Pipeline was asked to redesign the mechanical assembly and incorporate motors to facilitate the automation of the test fixture, as well as provide software programming to drive the motors. Also, some areas of the fixture would be submerged and thus required materials that would not corrode.
Pipeline designed a 3-axis motorized fixture that automated the positioning of the medical device relative to a precision-machined echo plate. The motors controlled pitch, yaw, and displacement via a custom LabVIEW program. The entire system was retrofit into an existing test bed, and 316L stainless steel components were used to withstand extended use in the corrosive environment. A lift assist mechanism was also incorporated to help operators move the fixture in and out of its functional position. Once the engineering development was complete Pipeline machined the custom components, built the mechanical assembly, wired the electrical system, and installed the fixture on site at the customer’s facility.
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