Engineering Stack Exchange
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Questions tagged [manufacturing-engineering]

231 questions
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What is the name of optimizing space between laser cut parts?

When we send some drawings to laser cut operation, they use a proprietary software (usually specific to the laser machine) to duplicate the drawings per request, with the spaces between parts optimized. It's a bit like "panelizing" operation in PCB…
ceremcem
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Multicolor dip-painting techniques

I once saw on TV a factory dipping a product into a tank of paint and it magically emerged with a crisp pattern. (It was an Archery bow, and the pattern was army-style camouflage). Was I deceived or is it actually possible?
Jodes
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Validation protocols

Question from a validation beginner in the pharmaceutical industry. What are the common approaches to start writing validation protocols (esp. IQ, OQ, PQ)? What are the common approaches to start executing validation protocols?
Dxml
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What is the name for a removable sewn bag stitch?

This stitch is composed of a single string/thread and is common on dogfood and grain sacks. It can be removed by just pulling on the end. Here is an example I found on youtube. Thanks!
ericnutsch
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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 more/less hard for factory machines to make, or if…
stats_model
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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 case and everything is running over $2,000. That seems extremely…
David Scidmore
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How Gas Springs or Gas Struts are pressurized with nitrogen gas and then sealed?

Prior to testing and probably painting, the last stage of manufacturing a gas spring or gas strut is pressurizing with Nitrogen. I was wondering how this step is done. I think it is filled with gas from the rod side and the rod seal works as an one…
Amir
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Are these "parts pickers"? "JLF" and "Little Joey"

I'm reading company training materials and I don't understand a few terms. I'm hoping that some of you might be able to decode. The company receives product and delivers it to work sites. I believe these are forklifts or ?order pickers?. An…
Robert Lugg
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CNC or other method for Wire Forming

How can I quickly and accurately form batches (10 to 100) of parts from mild steel wire about 3mm diameter ? The parts are 3D with bends of several radii, about 200mm in the longest direction with a 0.2"diam 270 degree loop in one end for a bolt.
user6342345
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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 so it's easier to make the finished…
salimsaid
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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 have to work with is a 2.5” x 1/4 seamless tube…
LeGamin
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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 fabrication defects"
Alan
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chamfering of die ends

I was reading about all types of tube drawing process and i wanted to look up some images for better understanding. When i looked at images in different sites most of them had the die ends chamfered at some angle. I tried to find out why this is…
optimus prime
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Is CNC milling on metals always followed by heat treatment?

CNC milling causes residual stresses in metals. So, after CNC milling of a metal part, say aluminium, do all manufacturers (I'm not referring to any specific manufacturer, just generally) heat treat such parts parts after milling?
Ron
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How is the drilling done along the axis for a typical synchronous motor shaft?

I was looking in google, but I did not find any information on how the drilling was done, I would appreciate it if someone who knew how it was answered. As typical it could be an axis of 200 [mm] in diameter and a hole of 24 [mm] Thank you!
elmuerto
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