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TKR-Grid I/F Design Options - PowerPoint PPT Presentation


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TKR Flexure. Shoulder Bolt. TKR Flexure. Grid. Shoulder Bolt (close fit). Grid. Collar/Pin with conical head (pressed in). Conical Bushing. TKR-Grid I/F Design Options. 2. 1.

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PowerPoint Slideshow about 'TKR-Grid I/F Design Options' - georgia-knox


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tkr grid i f design options

TKR Flexure

Shoulder Bolt

TKR Flexure

Grid

Shoulder Bolt

(close fit)

Grid

Collar/Pin with

conical head

(pressed in)

Conical Bushing

TKR-Grid I/F Design Options

2

1

Light pressed pin takes all shear load. Bolt simply holds pin in place. Need to work out method for extraction

slide2

TKR-Grid I/F Design Options

Shoulder bolt

TKR Flexure

TKR Flexure

Custom Shoulder Bolt with tapered end (close fit)

Grid Shoulder insert

(close fit)

Grid

Grid

3

Tapered split rings to expand radially under axial compression

Constant Force Washer

4

slide3

TKR-Grid I/F Design Options (fastener locking)

  • Lock wire
  • Key insert
  • Set screw
  • Liquid Shim on shoulder
  • “Battery terminal” on side flexures
  • Urelane (loc-tite) threads
slide4

TKR-Grid I/F Design Options (key decision)

  • Conical bushing (concept 1) favored for corner flexures
    • Issue: Imparted loads due to enforced displacement – need to look into maximum allowable enforced skew of TKR bottom tray
    • Issue: imparted hoop stressed in flexure
    • Action for Tom Borden: how to modify tooling to put conic into existing flexures (enough room for taper?)
    • Action – ensure taper is not a self-locking taper
    • Action – check loads on flexure and bottom tray
  • Liquid Shim at side flexures (zero tolerance plus positive locking) – need to ream existing holes to achieve 0.030 clearance or grind down shoulder, plus injection port, split washer, etc.
    • Action – Martin to talk with Rob Black regarding injection and liquid shim

0.551”

slide5

TKR-EM Tower Path to Re-vib (T. Venator)

  • Grid I/F redesign concept
    • Define concept
      • Define Schedule
        • New Vib Plates
  • Flexure tray I/F analysis redesign?
  • Analysis of all tower fastener torques and locking features
  • Resolve sidewall design options
    • 120 degree fastener heads
    • Mid tray mods, etc.