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Entry  Wed Jul 10 17:54:58 2013, Chloe, DailyProgress, ECDL, Solidworks Design base.SLDPRTdiode_mount.SLDPRTgrating_mount.SLDPRTlid.SLDPRTsketch_with_lid.PNG
    Reply  Thu Jul 11 17:51:12 2013, Chloe, DailyProgress, ECDL, Solidworks Design lid.PNGsketch_without_lid.PNG
       Reply  Fri Jul 12 15:25:56 2013, Chloe, DailyProgress, ECDL, Solidworks Design 
          Reply  Thu Jul 18 16:34:22 2013, Chloe, DailyProgress, ECDL, Solidworks Design 
             Reply  Mon Jul 22 18:30:20 2013, Chloe, DailyProgress, ECDL, Solidworks Design final_3d.PNGfinal_top.PNG
                Reply  Tue Jul 23 17:59:47 2013, Chloe, DailyProgress, ECDL, Solidworks Design 
Message ID: 1236     Entry time: Thu Jul 11 17:51:12 2013     In reply to: 1232     Reply to this: 1238
Author: Chloe 
Type: DailyProgress 
Category: ECDL 
Subject: Solidworks Design 

 Tara got me the information about the adjustable collimator tube he ordered (http://www.thorlabs.us/thorproduct.cfm?partnumber=SM1L30C). I built a mount in Solidworks and added it to the assembly. I also contacted Thorlabs and am discussing how easy it will be to shorten the tube, since we don't need it nearly as long and the length gets in the way a bit. This should be doable. 

I decided that we would go for a box where everything is screwed onto a baseplate, and a lid is screwed to the sides of the baseplate. The reason for this is that the base plate will be much easier to build on than building on the bottom of a box. The screws are on the side instead of the top because this will be easier to have machined, and the design is more compact leaving less room for noise when the lid is disturbed. 

I'm currently looking at a few tasks that I will try and complete soon: 

  • How do we plan to mount the grating? Most literature uses Epoxy, but it may be less noisy to design something on the grating mount to hold the grating and clamp it in. I'm examining which will create less noise. 
  • Is the choice of PZT ok? This involves several things. We need to consider the distance the PZT needs to be able to move and whether it will fit inside the grating mount we have designed. 
  • Will we be using D-Sub or BNC connections? BNC is better for rf, but it only has one channel on each coaxial cable so it is bulker. D-Sub is much more compact, and we can wire several channels at once. Right now I am planning on using D-Sub for the TEC wiring, probably a 9 pin connector using 4 for the +/- thermistor and the +/- Peltier element connections. The current driver may be in the rf range if we want to create sidebands, in which case we will want to use BNC cables. I'm looking into this. 

Attached is a picture of the current setup, built in Solidworks and the lid built separately. I'm not going to bother attaching the Solidworks files until things are more finalized. 

Attachment 1: lid.PNG  186 kB  | Hide | Hide all
lid.PNG
Attachment 2: sketch_without_lid.PNG  208 kB  | Hide | Hide all
sketch_without_lid.PNG
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