Case Studies

  • Medical Scanner Imaging System

    Sector: Medical

    Background/Requirement:

    • Tier 2 supply to Scanner manufacturer part of the Scanning drive mechanism

    Davall Scope/Key Challenges:

    • Design and integration of a 36:1 Spiradrive® reduction transmission
    • Extremely compact package Low noise Low backlash 
    • Smooth operation (validated by current drawn)

    Results/Status:

    • Custom design of a 12mm Spiradive Gearbox Custom bell housing
    • Cost down using Aluminium Extrusion for the casing now in production at c. 1000 units per annum

  • Power Steering (EPAS)

    Sector: Automotive

    Background/Requirement:

    • Reduction gearset in steering column prior to steering rack Critical targets for noise Critical requirements for back drive efficiency

    Davall Scope/Key Challenges:

    • Custom design 30:1 Spiradrive®gearset with Delrin wheel insert on a steel hub 
    • Extremely high back drive efficiency (> 90%) due to failsafe requirements Low noise and smooth drive

    Results/Status:

    • Design and development of a 30:1 custom Spiradrive® gearset
    • Over 300 development gearsets supplied Production status not known

  • High Performance Spinning Fishing Reel

    Sector: Commercial

    Background/Requirement:

    • Premium application product High standards for Subjective "feel" of smoothness.

    Davall Scope/Key Challenges:

    • Exceedingly compact Gearset Lowest numerical Spiradrive® ratio achieved in a production application (5.6:1) High accuracy gear profile and surface finish at low cost Subjective rating targets very high for a "premium product".

    Results:

    • Gearset in production supply Acceptable levels of subjective smoothness obtained.