Table of Contents
Energy: Energy is the area beneath the ultrasonic power curve and is calculated in joules,
(Watts X Seconds = Joules). When the ultrasonic welding system is setup in the "Weld In
Energy" mode the system will deliver the amount of energy as programmed. NOTE: The
maximum (default) time allowed for delivering ultrasonic energy is five (5) seconds.
Energy Mode: A welding method in which the ultrasonic power supply is active until the
required amount of energy is delivered (see ENERGY).
Fixture: A device for positioning and or holding a component for assembly.
Force: The amount of mechanical pressure that is used to deliver (bring down) the
mechanical actuator. This programmed force is also called TRIGGER FORCE and is used to
engage the knurl pattern into the component part(s) prior to the initiation of ultrasonic
energy.
Frequency: The number of complete oscillations per second expressed in Hertz (Hz) or
kilohertz (1 kilohertz = 1000 Hz). Typically 20 kHz or 40 kHz.
Gain: The ratio of the amplitude of motion produced by the Converter and delivered by
the horn is called the gain. It is determined by the difference in mass on either side of the
nodal point.
Height: A value, in millimeters (mm), as registered by a linear encoder upon completion
of an ultrasonic welding cycle. -- Programmable, in millimeters, with Upper Control Limit &
Lower Control Limit.
Height Encoder: A device utilized to monitor position, direction, speed, and/or velocity.
Horn: An acoustically designed metal tool that delivers mechanical energy from the
converter/ booster into the work piece. Most applications utilize half wave technology.
Hold Time: The amount of time after delivery of ultrasonic energy until the stack tooling
begins to retract from the component material(s).
Joint: The area where the surfaces are welded together.
Linear Height Encoder: See Height Encoder.
Loading Meter: A meter which indicates the power drawn from the ultrasonic power
supply.
Maintenance Counter: Used to alert production personnel of the need to review/ inspect
application tooling and/or the ultrasonic system for preventive maintenance purposes.
(See Counters).
Mode: The method of operating the system (also see WELDING MODE).
Node: The node is the area of the horn, (and booster), that exhibits no longitudinal
displacement and where the internal dynamic forces are at the maximum. This area is in
the center location on half-wave technology.
Parameter(s): Programmable units used to control and or monitor the ultrasonic
process. --Include but not limited to ENERGY, FORCE, PRESSURE, AMPLITUDE.
Parts Counter: Used to monitor system cycles and alert personnel when specific
conditions are met. (See Counters).
Peak Power: Peak power is the maximum amount of power in watts that was required to
keep the ultrasonic stack in motion during the weld cycle.
Power: Power, measured in watts, is a function of pressure and amplitude. The amount of
power, (watts) required to keep the ultrasonic stack in motion is monitored and used to
develop a power curve. This power curve is used to calculate the amount of energy
delivered/ dissipated, (Watts = Joules / Time). The power as displayed on the control box
is peak power.
100-412-180 REV. 12
25
Chapters
Table of Contents
Troubleshooting
