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Title: Actively controlled vibration welding system and method

A vibration welding system includes a controller, welding horn, an active material element, and anvil assembly. The assembly may include an anvil body connected to a back plate and support member. The element, e.g., a piezoelectric stack or shape memory alloy, is positioned with respect to the assembly. The horn vibrates in a desirable first direction to form a weld on a work piece. The element controls any vibrations in a second direction by applying calibrated response to the anvil body in the second direction. A method for controlling undesirable vibrations in the system includes positioning the element with respect to the anvil assembly, connecting the anvil body to the support member through the back plate, vibrating the horn in a desirable first direction, and transmitting an input signal to the element to control vibration in an undesirable second direction.
Inventors:
; ;
Issue Date:
OSTI Identifier:
1083924
Assignee:
GM Global Technology Operations LLC (Detroit, MI) DOEEE
Patent Number(s):
8,408,445
Application Number:
13/409,494
Contract Number:
EE0002217
Research Org:
DOEEE (USDOE Office of Energy Efficiency and Renewable Energy (EE) (United States))
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING