Questions tagged [manufacturing-engineering]
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Price of e-beam evaporator [closed]
I'm trying to find an accurate price estimate for an electron beam evaporator for a research project. The intended application is for use in large-scale manufacturing.
How does one usually go about ...
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How to determine the effect of manufacturing variability on assembly of items
Any help is appreciated. Below are some details
The product has around 20 different components (including ones manufactured to spec, fasteners, off the shelf, consumables, etc.)
Lets assume the ...
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Fixing center distance of worm gear
For a worm gear setup in a metal casing, is there a way to fix the center distance between the worm and the worm gear being too far away other than scrapping the casing and make a new one?
Reference ...
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How does resistivity affect the susceptibility of a steel alloy to induction heating?
For context, my question is related to the use of heating to elongate studs for casing tightening and loosening. In turbine casing assembly, in addition to torquing the nuts, studs have holes drilled ...
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Which pilot hole is better for helicoil insertion, a hole with cylindrically flat surface or a hole with cylindrically tapered surface
When it comes to helicoil insertion, the choice between a hole with a cylindrically flat surface and a hole with a cylindrically tapered surface depends on several factors. These factors include the ...
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How to determine the performance index M for the outer vessel of a vacuum bottle? Need help with objective and constraint selection (Ashby diagrams)
I'm reaching out for assistance and advice regarding a problem I'm encountering in my thermal bottle analysis. I have been attempting to determine the performance index M but facing significant ...
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I'm wondering if the parts I have ordered to be vacuum casted and made have instead been made using 3D printing
The reason why I'm asking this in the first place is that I have observed striations on the parts I have received.
I was under the impression that vacuum casted parts would not have striations that ...
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Does anybody know anything about this patented, late-19th-century process for producing white lead?
I debated on whether to put this question in the History or Engineering Stack Exchange. Ultimately, I decided on the Engineering Stack because I believe the people on this site will understand the ...
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'Know how' requirements for CNC / lathe manufacturing for open hardware projects [closed]
I've been asked to peer review a paper where the authors claim to be presenting an open source hardware item that is to be manufactured of aluminium using "CNC milling machines" or "...
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Simulation modelling of ATM machine
Today I built my First model with Anylogic simulation software on ATM simulation
So ATM is basically here a delay element, which takes delay time parameter as triangular( 1.5, 2, 3.5 ). My idea is I ...
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Simulating production of a product by a machine
I'm a beginner and trying to learn simulation modeling. My aims for simulation includes;
A firm receives 5000 orders per week. 120 products are manufactured in an hour. The machine runs for 4 shifts ...
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Potential Problems of Excessively Hard Shaft
Will there be any issues if we make the shaft too hard?
Hardness being a surface property may prevent surface scratches and wear, could it lead to any problems in general?
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Skid plate manufacturing detailed Schematic
I need to make a skid plate for my vehicle, Nissan Xtrail T31
Is there a site where i can get detailed manufacturing sheet for my specific car model ?
The schematic should include detailed dimensions ...
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I’m Building a Tower…
I’m contracted to hang 4x 112 lb wind generator on the top of 40’ articulating poles (1 ea.). For aesthetics it have to use a single post tower and powder coat bits of it to look good (REALLY?)
What I ...
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Ideas for running 2 gas engines to 1 shaft with pulleys
First time posting, but love the forum. Hopefully this hasn't been asked before. I could only find the question in relation to electric, not gas engines. I own a pressure washing business, and my ...
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"Box generator"-like software for laser cutting this shelf from MDF
I'm thinking of building this shelf out of cheap 1/4" thick MDF:
Now knowing how slow I am in the most basic of woodworking, I want the job to be speedy & easy. So I decided laser cutting it ...
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How are sealed bearings assembled?
Sealed bearings are a common component on modern bicycles.
Even if you take off the plastic covers of sealed bearings, the ball bearings inside will not fall out.
How is such a part assembled in the ...
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Improving O-Ring/flapper valve injection mold ->non-engineer
I make specialized flapper valves that are similar to O-Rings. The current model uses aluminum sheets as base disks that adhere to the rubber (2 part urethane). The rubber is poured into the waxed ...
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What is the effect of lateral friction on the specimen shape
During compression test lateral friction occurs on the lower and upper surfaces of the specimen how does this affect the final shape of it and how do we reduce this effect?
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Why Sintered Tantalum Powder Forms a Sponge-Like Structure?
I read that to make a dipped tantalum capacitor, they make tantalum powdered stick together with a binder and then sinter, which makes it porous.
But why do the pores form? It seems that if they are ...
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Gear minimum amount of teeth
So I know from college (and a bit of googling, not gonna lie) that the minimum amount of teeth on a gear is 17 due to undercut forming in traditional cutting manufacturing.
Does this rule still hold ...
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Is it possible to seal a perfectly smooth surface?
I've heard that a surface roughness needs to be within a defined range, but in theory, is it possible to seal a perfectly smooth surface? E.g. with an o-ring, static or dynamic?
Intuition tells me ...
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Why Sodium Sulphate is used in Sponge making
I read that sodium sulphate crystals are used to make sponges. The crystals are mixed in with some other stuff, then put into a mold. The mold is heated, causing the sodium sulphate crystals to melt ...
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How are high accuracy grinding stones and disks made?
Generally speaking cutters such as end-mills and often lead screws are ground vs shaped using a sharp cutter.
I am curious how are high accuracy grinding wheels made? Their very nature seems to be ...
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What methods can be used to stabilize a vibratory bowl used for orientation
I have a project where we are using a vibratory bowl to feed in parts to an assembler. The issue I am having is that the calibration sticker on the side is very out and a single line is very difficult ...
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PCB Manufacturer defects, what process/protocol to used?
During the manufacturing of 10,000 units of circuits, there are 10% defects in total.
As an electronics test engineer, what can I do to improve this situation?
Edit: Referring to "PCB ...
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Why would the thread diameter be smaller than the drill diameter (countersink bit)
I'm having a hard time understanding the following data for the correct sizing of countersink holes
I need to make a countersink for a screw with a thread size M6 which means that, according to the ...
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What is the force required to puncture through a sheet of foil against an anvil?
A hardened steel contour with a sharp edge presses against plastic foil which lies on top of a hardened steel anvil plate. What would be the force required to punch through the foil?
I am familiar ...
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Why regulations on refrigerant and not on efforts in preparing standard for leak proof refrigeration system?
Refrigerants from CFC series are banned due to environmental concerns,but why not focus on preparing a standard for registration system which minimize or eliminate leakage?
It must be difficult to ...
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Is the Stop-Start technology detrimental or good for the car?
I found a lot of articles on internet about how bad the stop-start technology is for your car and how it contributes to the faster wear of multiple parts, or how superb the feature is for the Sacred ...
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Why 95% Water is used Instead of 100%
So in this video(https://www.youtube.com/watch?v=v1z829NF9PA) at around 2:35 it says that the alluminium ingots for alluminium foil, after being heated, are cooled down with a mixture of 95% water, 5% ...
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What are the practical solutions to manufacturing this mechanical piece?
My Custom Piece (Measures are in mm)
I'm designing a custom mechanism that needs this piece to be able to function, but when i started thinking about how to manufacture it, I started getting confused ...
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Why Green Porcelain was Used for Chalkboards
This site: https://www.businessinsider.com/why-most-blackboards-are-actually-green-and-not-black-2017-11#:~:text=The%20color%20change%20came%20in,likely%20to%20survive%20the%20journey states that ...
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Injection molding: What is best for a dual cavity single mold?
I would like to understand what's the best optimization in terms of design for a single mold, dual cavity of a two-part box (top and bottom parts) which should be hold together with 4 screws without ...
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Are some pasta shapes more/less costly to manufacture?
This weekend, I was shopping at the grocery store and found that the Lasagna was priced at about double per pound compared to other pasta shapes. That got me wondering if different pasta shapes are ...
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Plastic hardness after machining vs molding
Should there be any difference in the hardness of a plastic material that is machined vs one that is pressed from a mold?
This question is in specific reference to vinyl record production where ...
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Material selection for plunger to be compatible with pressure seal
I am designing a jig to insert a pressure seal into a cap.
The jig has a cavity which the cap fits into and then is loaded with the pressure seal which needs to be inserted further using a plunger. I'...
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Which method is suitable for manufacturing this small scale geometry?
I want to have a channel manufactured in the dimensions shown in the picture. Which method is suitable for it. I think CNC can not achieve to work in such small scale. That rectangular prisms with 1....
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Why does Poisson's ratio always have the axial strain as the denominator?
Why can't we divide the lateral by the axial strain? Why does the axial strain always have to be the denominator? Would it matter if I was careless and accidently switched them around?
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How to integrate a heater in polyeurethane foam?
We are trying to integrate a heater in polyeurethane mattresses. However, the heating units we found are in fabric shape and hence the moment we pressurize the PE foam in the mold they deform and do ...
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Assembly process for common devices
As part of a course I am taking I am required to draw assembly process diagrams for common devices, such as electric motors, lamps, and mechanical presses, and I am trying to get the intuition for ...
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Planned cycle time for manual manufacturing processes with high variability
I am in a factory with many manual (non-machine) operations. Process time variability for most operations is high, leading to highly variable cycle times at the part level. There are efforts to ...
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Creating a drawing in Creo
How would I make a drawing similar to this ? Would I have to use Creo parametric draw a sketch and then convert this into a drawing ?
Or would I need to use a different Creo software ?
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How to work on big CAD project in team?
I'm always confused on what is the effective way to work on CAD with multiple team members to make it efficient. So far, as I'm freshly graduated I only work on a project where I'm the only one using ...
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Ideal Surface finish in turning
Why not depth of cut is equal to peak to valley height in ideal turning? I know the expression for peak to valley height in terms of feed. Though it seems correct, independance of peak to valley ...
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Which material, which geometry, which manufacturer? [closed]
I've experience as a development engineer but in software development, electrical engineering, and science experiments. So, even with a significant amount of experience, I've never been in the stage ...
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Where to acquire / create LED optics
I'm working on a few projects that require lenses to focus LED light flashes, similar to those lenses used by police lights (TIR lens) and other strobe traffic lighting utilizing Fresnel lenses. I've ...
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Pressure bag moulding Vs Vacuum bag moulding
What are there pro and cons of each method? In which industries were/are these molding techniques used? Why has vacuum bag molding supplanted pressure bag molding?
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What are some obstacles/issues you face while working in industry? [closed]
As part of a project incubator program at my university, I am trying to understand current specific issues, cumbersome processes, and obstacles facing engineering projects in industry. By pinpointing ...
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Determing best cost effective manufacturing process would be
I have designed a space frame and a case for said space frame. The case is a shell with one end up that is 18.50"x14.00"x10.50".
I've looked a different places for the quoting for the ...
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