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Entry  Thu Jun 21 14:23:22 2018, Udit Khandelwal, Summary, General, A summary of the Tip-TIlt Mirror Holder design changes 1.png2.png3-1.png3-2.png3-3.png
    Reply  Thu Jun 21 14:57:59 2018, Koji, Summary, General, A summary of the Tip-TIlt Mirror Holder design changes 
       Reply  Mon Jun 25 19:14:02 2018, Udit, Summary, General, Re: A summary of the Tip-TIlt Mirror Holder design changes 4-1.png4-2.png
          Reply  Mon Jun 25 21:14:08 2018, Koji, Summary, General, Re: A summary of the Tip-TIlt Mirror Holder design changes 
Message ID: 13996     Entry time: Thu Jun 21 14:23:22 2018     Reply to this: 13997
Author: Udit Khandelwal 
Type: Summary 
Category: General 
Subject: A summary of the Tip-TIlt Mirror Holder design changes 

Here’s a quick summary of the Tip-Tilt Design updates (all files are in the dropbox in [TipTiltSus>TT_New]) that I have been working on with Koji and Steve's help.

1. Plate on top to hold mirror in place:

The plate is 0.5 mm thick. I did a rough FEA with 10 N force on the point of pressure on it, and it bent easily.

2. Weighted screw rod at the bottom for tilting the mirror-holder:

I did a very simplified free body analysis to calculate the required length of the rod to achieve a +/- 15 mRad tilt, and got around 1.5 inches.

3. Set-screws on both side of wire clamp to adjust its horizontal position:

  • Front view (showing set screws on either side of the clamp to push it into the desired position, and the clamp in the middle with screws on top and bottom to fix its position):

  • Exploded view showing protrusion in clamp that sits in the mirror holder inset:

 

  • Exploded view showing inset in the mirror holder to slide protrusion in:

 

 

Comments:

1. Used the same screw size in most places to reduce complexity.

2. The mirror holder I have worked on is a little different from the actual piece I have on my table. Which one do you prefer (Koji)?

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