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Recent content by Zibraz

  1. Zibraz

    Sheet metal Spring, Force to Compress To a smaller Diameter

    I will sit down and try to work it out tomorrow when I am back in work. I might also try making it myself. I could probably chuck it in a lathe and turn it over a rod to make the rough shape.
  2. Zibraz

    Sheet metal Spring, Force to Compress To a smaller Diameter

    This sheetmetal spring is going to be inserted into a cylinder with a Ø17.80 bore. So the whole diameter will be compressed. I want to know how much force will be exerted outwards into the walls of the cylinder (Or know how much force it needs to compress the diameter.
  3. Zibraz

    Sheet metal Spring, Force to Compress To a smaller Diameter

    I'm struggling to determine the force to reduce this sheetmetal spring to Ø17.8mm. If someone could point me in the direction or give advice, that would be great. I can find alot about normal wire springs, but can't find much for a sheetmetal spring. The spring is 0.6mm thick and 10mm long...
  4. Zibraz

    Permeable Thin Material

    We are making something similar to a chromatography column. This tube assembly we are making is actually a preconcentrating assembly that will help to remove carbon dioxide, water and other unwanted chemicals. When we pour the sorbent into the tube, without some sort of stop, the sorbent will...
  5. Zibraz

    Permeable Thin Material

    We are making a sorbent trap. The idea is you pass a gas mixed with compounds into the tubing, and the sorbent will separate the chemical mixture making easier to identify the compounds that come out of the other end. We do a similar thing but with a quartz trap. We use Quartz wool as the filter...
  6. Zibraz

    Permeable Thin Material

    The only thing the acetone does is to mix into the sorbent so it more easily flows into the 800mm length of tubing. The smaller stopper (made from the 0.016" tube and the 0.005" wire) is there so when the acetone & sorbent mixture it's it, the acetone is flushed off (using a pump) and the...
  7. Zibraz

    Permeable Thin Material

    I suspect there will be no other solution to my problem, but I thought I would ask. I have a new project to find a better method to create a sorbent tube assembly. The basic construction is as follows. 800mm length of Ø0.063"ID x Ø0.083"OD tube. This tube is filled with a sorbent (By diluting...
  8. Zibraz

    When Would You Use a Pem Clinch Nut Over a Straight Thread?

    Hey Desertfox. Yeah I kind of guessed that might play into it. So it's just deciding whether the sheet is thick and strong enough to cope with the torque of the screw. We usually deal with aluminium and steel sheets between 1-3mm depending on the application and forces of the overall design...
  9. Zibraz

    When Would You Use a Pem Clinch Nut Over a Straight Thread?

    When designing sheet metal, what are the considerations made to decide whether you will use a pem clinch nut or jus a normal thread? Typically, I felt that pem nuts are always better than threads in aluminum sheets, but Steel sheets are much stronger and stripping a thread is more difficult...
  10. Zibraz

    Repeated Views on Same Page, Good Practise?

    I never used the ordinate system before. I would be tempted but I suspect the other engineers wouldn't be too happy with this system for dimensioning. I float the idea over to see their opinion on it. If I can't get my drawing approved internally, I can't get it sent out.
  11. Zibraz

    Repeated Views on Same Page, Good Practise?

    I have a pretty complex part to draw and a specific view is loaded with features. Placing all the dimensions on a single view just makes the whole thing look like a mess and ocnfusing. Usually I would do something like dimension the hard edges on one page, then the holes on the second page, but...
  12. Zibraz

    Need To Size an O-ring for Square Face Seal O-ring.

    This will be for a prototype of a sealed box which will be purged with Nitrogen with other bits inside. I know the required shores hardness and material required for my application. I'm just trying to estimate the size of O-ring required. I'm fairly certain my assumption is correct, but assuming...
  13. Zibraz

    Need To Size an O-ring for Square Face Seal O-ring.

    Is it reasonable to assume that the inner circumference of the O-ring roughly equals the inner perimeter of my O-ring groove? If so I can work out my required diameter and order a few O-rings of roughly that size to increase the odds of getting it right. The above O-ring has an inner length...
  14. Zibraz

    Need Accurate Manual Horizontal Adjustment To Internal Deck inside Frame.

    I have designed jigs previously for my other projects but I don't think this lends it's self well to a jig. The way we have to design the top part of the machine means the middle deck highlighted needs to shift up and down. I was thinking of reducing the size of the screws and having a steel...
  15. Zibraz

    Need Accurate Manual Horizontal Adjustment To Internal Deck inside Frame.

    I was considering looking for some sort of screw jack which can be removed. It was going to be one of the solutions I present to see what my manager prefers. Something like that would do pretty well I think, their pretty cheap aswel.
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