Questions tagged [product-engineering]

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Steel design and manufacturing company recommendations [closed]

I am trying to find UK-based engineering companies to help me refine a prototype, including 3D-modelling/CAD, and ultimately manufacture at scale (I hope...). I'm not having much luck simply googling ...
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1answer
17 views

Designing a “ratcheting” spinning wheel with ferrous metal bits

I'm trying to design a freely spinning wheel that will "lock" into a few different configurations. I'm planning on placing a rare earth magnet near a certain point on the wheel, and inserting bits of ...
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1answer
41 views

What are the essentials of a good PRD (product requirements document) for a new mechanical device

I need to write a non technical product requirements document for a new machine that I want designed. I need to write a PRD, and I need to ensure that I have included all the salient information, ...
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1answer
58 views

When designing scissors, how do you design the blade geometry to ensure good cutting capabilities?

I have been looking online and found there should be two points of contact, one in the blades and one in the pin. In order to achieve this, I assume there's a slight angle of the blades into the ...
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1answer
39 views

Hermetic Cable Seal With Space Limitations

I have an application wherein I need a hermetic seal at cable exit points from a plastic housing. The cables are not removable. I'd like to achieve this seal using the plastic housing itself by ...
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2answers
63 views

Which design to maximize friction for a device standing on concrete?

I have a device 4cm X 5cm X 15cm that stands on asphalt/concrete/road. So, the device is taller than its base which makes contact with the asphalt. I want to maximize the friction so that the device ...
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1answer
62 views

Coating brass components cheaply

I have seen a number of products made of brass with a silver-looking coating covering the brass on the outside. These products are all quite cheap (for example a small watering can or clothes hooks). ...
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1answer
36 views

what subject in Mechanical engineering deals with the making of External cases for electronic gadgets?

can anybody tell me what subject in Mechanical engineering deals with the making of External cases for electronic gadgets? I know I need to use CAD/CAM but I am asking this question because I want to ...
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1answer
50 views

Production technology for hexagonal shaft ?

The shaft is the most important element in my machine, so i rather prefer forging for production technology, the circumscribed circle of the shaft is about 140 mm and the length is about 1400 mm. ...
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3answers
60 views

rod technical name

Does anyone knows what is the name of this rod? are these available in the market?
3
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1answer
399 views

Industry standard dimensions for a 5-gallon water cooler?

I'm designing a product to accept a 5-gallon water jug. This is the light blue, transparent plastic kind for potable water that you can buy, swap, or fill at grocery stores. I can take measurements of ...
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1answer
56 views

Why are CO2 analyzers much more expensive that CO detectors?

This question emerges from Earth Science SE since recently there was asked this. There so far no one had the engineering/ measurement device expertise to answer this. I am aware that these are ...
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1answer
41 views

Choosing the best type of portable cord for a consumer electronics product

Consumer-level electrical portable cords come in a variety of types (and gauge, but that's not the subject here) and each must have its rationale, considering the cost constraint (performance/price ...
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0answers
28 views

Required clearance for moving part (Push Button)

I'm designing a push button made from most likely ABS but possibly TPE, it presses a surface mount button on a PCB with 0.9mm travel. The ABS button is 8x8mm Square and travels through 4mm of ...
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1answer
2k views

How to create a clear bill of materials list?

I am required to create a Bill of Material for a steering system I am designing. However, I am not entirely sure how to structure it. For example, what type of order are the parts listed as I have ...
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1answer
49 views

What manufacturing process is suited for production of the elastomer strip?

What manufacturing process should be adopted to manufacture a LEGO® compatible strip made by material which is rubber like?
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1answer
79 views

How do you calculate the required power of a disk turbine (Rushton turbine) to rotate a fluid at a given speed?

I am designing a potato peeler which is practically a bucket that has a rotating disk (figure below) at the bottom driven by a motor. Water and potatoes are put inside the bucket and the disk rotates ...
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1answer
90 views

Patent for product I designed

I have designed a product and I found that there is a patent on that specific product. There also seems to be many patents and for the smallest or most obvious use of items. I am wondering if anyone ...
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1answer
65 views

Feasibility of product idea [closed]

I have an idea for a sports equipment innovation "a new product" that a track and field athlete can use to practice and train his sport. The technology involves a laser beam. I'm wondering if my idea ...
3
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2answers
282 views

Stability issues in gateleg table design

This is a table with two wings that fold down, and two legs per side that swing out for support. I'm pretty confident about this design being stable: The green section at the top is the only surface ...
3
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1answer
78 views

What to do first when going from Prototype to Finished Product? [closed]

When you have a working prototype based on off the shelf parts (eg. Arduino), and you want to move to designing a finished product, what is the correct order of development? Electrical Engineering? (...
3
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1answer
63 views

Placing machine visions targets with high accuracy

My company is working on a machine vision application. One of our requirements is that the camera peer through a frame (like a picture frame - see here ), where the top and bottom border are etched ...
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1answer
52 views

How can I remove Ozone from a sealed enclosure

One of the processes in a current product design catalyzes the conversion of atmospheric oxygen into ozone: $$ 3\text{O}_2+\text{energy}\rightarrow 2\text{O}_3 $$ Ozone is highly reactive and, over ...
3
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1answer
805 views

How to prevent static buildup in an electric burr mill coffee grinder?

Every morning when I get up, I use this coffee grinder to grind beans for my morning coffee. When I remove and subsequently open the top of the bin, I often find that enough static electricity has ...
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0answers
106 views

What does it mean to design something by using “first principles”? [closed]

A fan of Elon musk but have hard time understanding his engineering approach when he says use "first principles". Could anyone elaborate on that ? When we got a problem at hand what is the first ...
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1answer
923 views

How to determine if an engineering process is stable and capable?

Mostly interested in understanding how engineers determine if an engineering process is stable and capable, particular in design for manufacturing (DFM) frame work for components. Some example ...
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3answers
245 views

How can the vendor be approved/disapproved based on validation test data?

The power requirement for a sub system is 5V +/- 10% @ 1A of current. A RFQ was issued and a prospect vendor was selected. A first article of inspection (FAIR) has been submitted which includes 15 ...