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What Are Horns and Fixtures?

The Horn is the final component in an ultrasonic system and is designed to deliver the energy to the plastic work piece. Horns are manufactured from aluminum, titanium and specialty steels.

The primary functions of the horn are to resonate at the desired frequency and to provide intimate contact with the plastic part. The secondary function of the horn is to increase the output amplitude of the ultrasonic system, so that the proper amplitude is achieved for the plastic assembly application. Horn amplitude is measured by the peak to peak motion that is achieved at the face of the horn. The range of amplitudes required for the majority of ultrasonic plastic assembly applications are from 0.001 to 0.006 of an inch.

Types of horns include:

       Standard Horns
       Composite Horns
       Contoured Horns
       Full Wave Horns
       Vacuum Horns
       Nodal-Mounted Horns
       Carbide Horns
       Hard Coated Horns


    The ultrasonic Fixture is used to support the plastic work piece during the ultrasonic operation. An important component of the ultrasonic assembly system, the design and manufacture of the ultrasonic fixture is often overlooked as an important tool in the success of the process. Fixtures are manufactured from a wide variety of materials and include a combination of clamping and locating devices. Fixtures can be manual or automatic tools depending upon the requirements of the application.

    For additional information and to receive a 10% Discount on your next ultrasonic tooling order, complete the information located on the Contact Us page.

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