Thanks Tunalover
I don't currently own Steinbergs book (but I'll order it ASAP!) can anyone that does have a flick through to see if this dimension is available?
Matt Jackson
Product Design Engineer
I have considered vibration as a separate issue. I also like the solution from IRstuff but there is a power device on the PCB which is screwed to the cast base for heatsinking and the cast base also provides PCB support so the PCB cannot float (unless I use foam or elastomeric pads).
I really...
The application is very cost sensitive and fairly high volume (15-20k PA) so there are no machined parts and I don't want to have to vary the build (to cope with tolerance bands) or band components.
The tolerances are cast base ±0.1 + moulded cover ±0.05 and also a PCB ±0.15 + connector ±0.2...
HI
I am designing an enclosure to hold a circuit board supported on pillars from below and pressed onto them from above. My design must always deform the PCB in the same direction to avoid stressing some solder joints. The problem is when I do a tolerance analysis the maximum deflection could...
What really gets on my t!ts is having to rebuild a massive rolled-back model before I can see what effect my edit has had on an assembly it's in.
I also would like to be able to control the draft of each face in an extrude separately in the same way you can switch on multi radius fillet.
I...
A bit of feedback.
We have sucessfully moulded the part but initially we had a problem with section thickness. The light guide melted like it was part of the injected material and thus caused the section thickness to be too large which in turn caused some local areas of voiding and...
OK. But I don't quite know what else I could have told you, I've 'done my homework' read all the information I can, I've spoken to our sub-contractor and I haven't found the information I was after.
I had some specific questions in my first post which have been partially answered - I suppose...
Well they're pretty similar - both PC, both the same melt temp. Might this be a problem with the lightguide getting melted by the plastic during injection causing it to deform or worse break?
It isn't really the bond I'm worried about it's wether it's even possible.
Matt Jackson
Product Design...
Thanks, I'm quite serious, the parts are for an electric motor drive controller for Fork Lift Trucks etc.
One end of the controller has a PC endcap with a hole through it. The light guide is a solid clear 5mm cylinder with a mushroom dome on one end which transmits light from a SM diagnostic...
The melt temperature are almost identical.
I already have a mould tool at our subcontract moulders, presently the part has a hole for the light guide to be inserted into but I want to mould it in for DFMA and sealing reasons.
We will be making around 10k part per year.
I have a PC (MAKROLON 2205) Lightguide which I want to mould an electronic enclosure around using PC (Lexan 920).
Is this possible due to sofening temps being similar?
What are the 'rules' about overmoulding and material softening temps?
If it only just works what will the results be like?
Ok, maybe I misunderstood the use of this forum.
I was searching it looking for something else but was interested by the problem and replys here but thought there was some information missing - hence my reply. Now anyone (not nesessarily nlowrie) searching the fora for this subject will have...
Also don't forget that any seals or other parts of the enclosure which are plastic (most of which are hydroscopic to some degree) will also be happily sucking water into their structure on one side and expelling it on the other given a humidity differential.
What files are created during a crash or hang and are safe to delete from /ideas_data.
I have a batch file to delete these files which I wrote for AS4 but there seems to be more files created in 10NX.
Some time ago I found a list of filetypes and what they do/how they are controlled but can't...
