Hi all,
This is probably a concept design problem so I apologize in advance if its trivial.
I need to design a manifold of 100 needles arranged in a 10x10 grid all connected to the bottom of a liquid container.The container itself has 4 inlets on top in which liquid is pumped using a...
Greetings everyone,
I have a general question regarding machinery design. I have noticed that conventional machines only have dovetail slides while CNC machines usually have linear ball bearings for their axes. Even really expensive and precise conventional machines like Hardinge have sliding...
Greetings everyone,
I have a general question regarding machinery design. I have noticed that conventional machines only have dovetail slides while CNC machines usually have linear ball bearings for their axes. Even really expensive and precise conventional machines like Hardinge have sliding...
Hi everyone,
I have designed a few linear motion systems in the past with linear bronze/PTFE/cast iron bushings (just a plain bushing with a reamed hole in the middle) using H7/g6 fit. Most of them work just fine but a couple, especially when they are loaded off center, tend to lock or wear too...
Hello Everyone,
I am in need of a resource (book or guide) from which I can learn how to estimate how much a material is expected to deform as a result not of excessive stress but internal stresses or some other process that I know nothing about.
This is probably novice but I cant really...
Hi everyone,
I have made some laser cut parts (4 mm thick) from PMMA which have bent significantly after the cutting process.Sadly, I do have a flatness tolerance for these parts so I need to find a way to correct them. I checked about annealing processes and found this...
Hi,
We have been flirting with the idea of making a large collimator lens for a flood exposure system. Now, I realize that I am probably going to fail miserably and that this is a black art etc but still, I want to give it a go. So, my plan is to try optical grade PMMA first and BK7 after that...
Hello everyone,
I have already asked a couple of polymer experts about this and I didn't get an answer, but I have found time and again that if no one can help you, Eng Tips is the way to go :D
Anyway, I am in need of a UV curing photopolymer that expands during polymerization. Now ideally, I...
Hello everyone,
I am a mechanical engineer and my main occupation is the design and prototyping of lab automation devices. Most of these devices are intended for biological research, so I do a lot of fluid handling, laser systems, xyz stages, stirring and some magnetism. My trouble is, I was...
I am in need of a 4 mm stainless steel shaft with a center hole of 0.5 mm. I need to fabricate about 100 parts of 4 mm diameter, 30 mm long with o-ring grooves, taper geometries and a center hole of 0.5 mm. While most of the features are doable in a CNC lathe , I think the hole cannot be...
Hello all,
I am in need of a 4 mm stainless steel shaft with a center hole of 0.5 mm. I need to fabricate about 100 parts of 4 mm diameter, 30 mm long with o-ring grooves, taper geometries and a center hole of 0.5 mm. While most of the features are doable in a CNC lathe , I think the hole...
Hello everyone,
I am trying to solve a transient thermal model of a cooling enclosure that uses peltier units. I got the curve of my peltier unit so what I am trying to do is grab the temperature on the hot side with a temperature probe and use it through a function as a negative heat flow for...
