How to measure Suspension Parts with KLIPPEL ?

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Requirements:

• Distortion Analyzer + Cables

• Power Amplifier

• Computer

• Software: Transfer Function (TRF)

• Suspension Part Software

• SPM Bench

• Clamping Set (Cones, Cups, Rings)

• Scales (weigh the measuring mass)

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• Select the optimal cone

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• Select the optimal cup

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• Clamp the inner rim by using the slide, cone, cup and two nuts

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• Weigh the surround with the inner clamping
• Measure outer diameter D_o of the suspension part (without rim)
• Look in the look-up table to find the lower clamping ring having an inner diameter which is just larger than D_o.
   

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• Select the lower clamping ring
• Take the one-step larger ring for upper clamping ring

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• Bring the clamping platform into horizontal position for easy handling
• Insert the lower ring into the clamping platform
• Put the slide with the clamped suspension on the guiding rod.
• Fix the upper ring to clamp the outer rim

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• Adjust the laser displacement sensor

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• The suspension part is excited pneumatically to vibrate at the resonance frequency.
• A frequency sweep (3 Hz to 30 Hz) is used from TRF Module.
• Stiffness is calculated from the measured displacement (one-signal-method) with SPM Software.
• Results show the nonlinear stiffness and reciprocal compliance versus displacement